JP7504727B2 - Movable wind-resistant hook - Google Patents

Description

The present invention relates to a wind-resistant hook that is attached to a shutter curtain.

When the shutter curtain is fully closing the building opening, both ends of the shutter curtain in the width direction are received within the guide rails on the left and right sides of the building opening. However, when wind pressure acts on the shutter curtain, the shutter curtain expands, and there is a risk that the ends in the width direction may slip out of the guide rails.

Wind-resistant hooks are known as a means of preventing the widthwise ends of the shutter curtain from slipping out of the guide rails when the opening is fully closed. Wind-resistant hooks are generally provided on heavy-duty shutters that require a certain level of wind resistance, but wind-resistant hooks are rarely required as standard equipment for so-called lightweight shutters.

In addition, conventional wind-resistant hooks are permanently installed in a protruding position at the longitudinal ends of the slats that make up the shutter curtain, and are provided across the height of the shutter curtain when the opening is in a fully closed position (Patent Document 1, Patent Document 2).
Published in Japanese Published in Showa 64-27397

The present invention aims to provide a shutter equipped with a movable wind-resistant hook whose claw portion can move between a stored position and a locked position.

Another object of the present invention is to restrict the upward movement of a shutter curtain in a fully closed position when the claw is in the locked position, when a movable wind-resistant hook is used whose claw is movable between a stored position and a locked position.

The technical means adopted in the present invention are:
A shutter curtain made of multiple slats connected in the height direction;
Left and right guide rails located at both ends of the building opening in the width direction and extending to the full height of the building opening;
A wind-resistant hook is provided at both ends of a portion of the slats of the shutter curtain in the longitudinal direction;
Equipped with
The wind-resistant hook is a movable wind-resistant hook having a claw portion movable between a locking position and a storage position,
A locking portion is provided in the guide rail at a height position corresponding to the height of the wind-resistant hook.
The shutter.

In a shutter equipped with movable wind-resistant hooks, if the shutter curtain is opened without noticing that one or more wind-resistant hooks are in an operational state (claws in a locked position), the claws may hit the underside of the upper guide at the top end of the guide rail with force, damaging the claws or the upper guide. Even if the design of the upper guide is changed, there is a risk that the claws in the locked position may interfere when the shutter curtain is wound onto the winding body, causing the winding to become distorted or generating abnormal noise.

In one embodiment, an abutment portion is provided in the guide rail and located above the locked portion,
When the claw portion is in the locking position, the abutment portion is located above the claw portion.
With this arrangement, when the shutter curtain is moved upward with the claw portion in the locked position, the claw portion comes into contact with the contact portion, thereby restricting the upward movement of the shutter curtain.
When the claw portion is in the stored position, the abutted portion is not positioned above the claw portion or the case of the wind-resistant hook.

In one embodiment, the contacted portion is integrally formed with the locked portion.
In one embodiment, a hook receiver having the engaged portion and the abutted portion is provided within the guide rail.
In one aspect, when the opening is fully closed, the claw portion in the engaging position engages with the engaged portion, thereby providing a wind-resistant structure that prevents the slat end from slipping out of the guide rail.

In one aspect, the present invention relates to a method for installing a wind-resistant structure using shutters, comprising:
We provide shutter curtains with wind-resistant hooks on both longitudinal ends of the slats.
The guide rails located at both ends of the width direction of the building opening are provided with hooks at height positions corresponding to the height positions of the wind-resistant hooks,
The wind-resistant hook is a movable wind-resistant hook that can be in an operating state in which the claw portion is in a locking position and in a non-operating state in which the claw portion is in a storage position,
The wind-resistant hook is deactivated, and the shutter curtain is used to close the building opening.
When the opening is in a fully closed state, the wind-resistant hook is changed from a non-operated state to an operated state, and the claw portion is placed in an engaging position so that the claw portion can be engaged with the engaged portion, thereby providing a wind-resistant structure.

The present invention provides a movable wind-resistant hook with a claw portion that can be moved from a storage position to a locking position.

An abutment portion is provided inside the guide rail, and when the claw portion is in the locked position, the abutment portion is positioned above the claw portion. When the shutter curtain is moved upward with the claw portion in the locked position, the claw portion abuts against the abutment portion, thereby restricting the upward movement of the shutter curtain.

FIG. 4 is a front view of the shutter device in a fully closed position as viewed from the indoor side. FIG. 2 is a partially enlarged view showing a locking device portion of FIG. 1 . FIG. 4 is a vertical cross-sectional view of the shutter device in a fully closed position. FIG. 3 is a partial enlarged view showing an upper portion of the guide rail of FIG. 2 . FIG. 13 is a diagram showing a wind-resistant hook unit. FIG. FIG. FIG. FIG. FIG. FIG. FIG. FIG. A figure showing the wind-resistant hook unit in an inoperative state (steady state) (with the cover plate partially omitted). 13 is a diagram showing the state in which the operation plate starts to slide in the first direction from the state shown in FIG. 12 (the cover plate is partially omitted in the diagram). 14 is a diagram showing a state in which the operation plate has further slid in the first direction from the state shown in FIG. 13 (the cover plate is partially omitted in the diagram). 15 is a diagram showing the operational state of the wind-resistant hook in which the operating plate has further slid in the first direction from the state shown in FIG. 14 and been locked (the cover plate is partially omitted in the diagram). In the actuated state of FIG. 15, the state where the claw portion in the locking position is pushed in is shown (the cover plate is partially omitted). The upper figure shows the mounting plate fixed to the back of the slat, and the lower figure shows the process of attaching the wind-resistant hook unit to the mounting plate. 13A to 13C are diagrams showing the process of attaching a wind-resistant hook to a mounting plate (only the bottom plate is shown). The upper figure shows the wind-resistant hook attached to the back of the slat in an inoperative state (the operating plate is in the first position), and the lower figure shows the wind-resistant hook attached to the back of the slat in an operational state (the operating plate is in the second position). FIG. 2 is a diagram showing an operation panel equipped with a display unit. The figures show the state in which the slat is positioned within the guide rail without any misalignment, where (A) shows the wind-resistant hook in an inoperative state (with the claw portion in the stored position), (B) shows the wind-resistant hook in an operational state (with the claw portion in the engaged position), and (C) is a cross-sectional view of the guide rail. The figures show the state in which the slat is offset within the guide rail, with (A) showing the wind-resistant hook in an inoperative state (with the claw portion in the stored position), (B) showing the wind-resistant hook in a state in which the claw portion is in contact with the bottom of the guide rail (the claw portion moves relatively backward) and the operating plate is in the second position and locked, and (C) showing the wind-resistant hook in an operational state (with the claw portion in the engaged position). This is a diagram to explain the effect of the wind-resistant hook when surface pressure acts on the shutter curtain. The upper diagram shows the case when surface pressure acts to inflate the shutter curtain toward the inside, and the lower diagram shows the case when surface pressure acts to inflate the shutter curtain toward the outside. 2A to 2C are diagrams for explaining in detail the configuration of a shutter curtain according to the present embodiment. This is a schematic diagram showing the behavior of the shutter curtain when the opening is in a fully closed position, the wind-resistant hooks are in an activated state, and wind pressure acts on the shutter curtain, and is a cross-sectional view showing a slat provided with a wind-resistant hook. This is a schematic diagram showing the movement of the shutter curtain when the opening is in a fully closed position, the wind-resistant hook is in an activated state, and wind pressure acts on the shutter curtain, and is a cross-sectional view showing the seat plate. This is a schematic diagram showing the movement of the shutter curtain when the opening is in a fully closed position, the wind-resistant hooks are in an activated state, and wind pressure acts on the shutter curtain, and is a cross-sectional view showing a slat located in the upper part of the opening. A figure showing the inoperative state (steady state) of a wind-resistant hook unit according to another embodiment. A diagram showing the operational state of a wind-resistant hook unit according to another embodiment.

[A] Overall configuration of the shutter Fig. 1 is a front view of the shutter device according to this embodiment, and Fig. 2 is a vertical cross-sectional view of the shutter device according to this embodiment. The shutter device according to this embodiment is a lightweight manual shutter, but the lightweight shutter and manual shutter are merely examples and do not limit the present invention. The present invention can also be applied to, for example, an electric shutter equipped with an opening and closing mechanism.

The shutter curtain 1 is made up of multiple long slats 10 that extend in the width direction of the opening and are connected in the height direction, and has a seat plate 11 at its lower end, while the upper end of the shutter curtain 1 is connected to a roll-up body 2 arranged above the opening via a hanging point 10'. Guide rails 3 are erected on both the left and right ends of the building opening in the width direction, and when the shutter curtain 1 is raised or lowered or in a fully closed position, the grooves of the guide rails 3 are designed to receive both widthwise ends of the shutter curtain 1 (both lengthwise ends of the slats 10).

When the opening is fully closed, the shutter curtain 1 is wound up on the winding body 2, so that both widthwise end portions of the shutter curtain 1 rise while being guided by the guide rails 3 to open the building opening, and when the opening is fully open, the shutter curtain 1 is unwound from the winding body 2, so that both widthwise end portions of the shutter curtain 1 fall while being guided by the guide rails 3 to close the building opening.

The shutter device according to this embodiment is a manual shutter. The winding body 2 is biased in the direction of winding up the shutter curtain 1 by the balance spring 2'. When the shutter curtain 1 is in the fully open position, a force for lowering the shutter curtain 1 is manually applied to start the descent, and the shutter curtain 1 descends by the manual operating force and its own weight, landing on the floor FL or the ground and assuming a fully closed position. When the shutter curtain 1 is in the fully closed position, a force for lifting the shutter curtain 1 is manually applied to start the ascent, and the shutter curtain 1 is lifted while being wound up by the manual operating force and the biasing force of the balance spring, assuming a fully open position.

As shown in FIG. 1A, the locking device 19 is provided below the middle of the height of the shutter curtain 1. The locking device 19 is provided on the slat 10 at a predetermined height of the shutter curtain 1, and includes an operating unit 190 provided at the center of the length of the slat 10, left and right rods 191 extending horizontally from the operating unit 190 toward both ends of the length of the slat 10, and a locking unit 192 having multi-stage claws formed at the tips of the left and right rods 191. A locking unit (not shown) is provided in the guide rail 3 corresponding to the height of the locking device 19 in the fully closed state. When the opening is fully closed, by rotating the operating unit 190 of the locking device 19, the locking unit 192 protrudes from the longitudinal edge 103 of the slat 10 and locks with the locking unit, thereby restricting the upward movement of the shutter curtain 1 in the fully closed position. The locking device 19 restricts the upward movement of the shutter curtain 1 when the opening is fully closed, and the engagement state of the locking part 192 and the locked part is such that it restricts the upward movement of the locking part 192, and this engagement state of the locking device 19 cannot counteract the movement of the end of the slat 10 coming out of the guide rail 3.

Both ends of the winding body 2 in the longitudinal direction are supported by the left and right plate-shaped brackets B. In this embodiment, a shutter case 20 is provided above the building opening, and the winding body 2 is located inside the shutter case 20. That is, the shutter case 20 provides a shutter storage space for storing the shutter curtain 1 wound up on the winding body 2. In this embodiment, the shutter case 20 is the shutter storage space, but the space inside the ceiling may form the shutter storage space. On the underside of the shutter case 20, a horizontally long opening is formed across the entire width of the building opening through which the shutter curtain 1 passes when rising and falling, and an inner lintel 21 and an outer lintel 22 are provided adjacent to the horizontally long opening and extend across the entire width of the building opening. Both ends of the inner lintel 21 and the outer lintel 22 in the longitudinal direction are supported by the left and right brackets B (upper guide 23). The guide rail 3 extends over the entire height of the building opening, and at the upper end of the guide rail 3, an upper guide 23 that expands upward is provided in correspondence with the height positions of the inner lintel 21 and the outer lintel 22. As shown in FIG. 2A, the upper guide 23 is fixed to the lower part of the bracket B. The upper guide 23 is formed with a pair of guide parts 230, 230 that expand in a curved shape toward the upper end, and a vertical bottom piece 231 (with vertically inclined tapers 2310, 2311). The lower side of the lower surface 232 of the guide part 230 is provided with a recessed part that receives the upper end 36 of the guide rail 3, and the front side of the recessed part is formed with an abutment part 233 against which the wide part 111 of the seat plate 11 abuts when the opening is fully open. The groove width at the lower end of the pair of guide parts 230, 230 is approximately the same as the width of the guide groove 35 of the guide rail 3.

When the opening is fully closed, the seat plate 11 at the lower end of the shutter curtain 1 is placed on the floor surface FL or the ground. Both longitudinal ends of the seat plate 11 are located inside the guide rail 3. The seat plate 11 according to this embodiment has a rising portion 110 connected to the lowest slat 10 and a wide portion 111 located at the lower end of the rising portion 110 and extending horizontally, and both longitudinal left and right ends of the rising portion 110 are located inside the guide rail 3. The length dimension of the wide portion 111 is shorter than the opening width dimension and wider than the width of the guide groove 35 (FIG. 21(C)) of the guide rail 3, and the lower surface of the wide portion 111 abuts against the floor surface FL. The seat plate 11 is thicker and sturdier than the slat 10, and has greater mechanical strength than the slat 10.

As shown in FIG. 2, when the opening is fully closed, the opening blocking portion 1' of the shutter curtain 1 blocks the building opening over the entire opening height, and both widthwise ends of the slats 10 of the opening blocking portion 1' of the shutter curtain 1 in a substantially vertical position are located within the grooves of the guide rail 3. The slats 10 constituting the upper portion 1D of the shutter curtain 1 in a substantially vertical position are located within the shutter case 20, and both longitudinal ends of these slats 10 are located above the upper end of the guide rail 3. The slats 10 located at the lower end of the shutter case 20 are located between the inner and outer lintels 21, 22, and both longitudinal ends are located within the upper guide 23.

As shown in Figures 1, 2 and 24, movable wind-resistant hooks F are provided at both longitudinal ends of a number of slats (four in this embodiment) 10 located at the middle of the height of the opening closure portion 1' of the shutter curtain 1 in the fully closed position. The movable wind-resistant hooks F have movable claws 4. When the shutter curtain 1 is opened or closed, or when the opening is normally fully closed, the claws 4 are in a stored position, and when the opening is fully closed, the claws 4 are in a protruding position to function as wind-resistant hooks. Inside the guide rail 3, hook receivers 16 are provided at heights corresponding to the height positions of the wind-resistant hooks F of the shutter curtain 1 in the fully closed position.

[B] Wind-resistant hook [B-1] Overview The wind-resistant hook F according to this embodiment is a wind-resistant hook assembly or a wind-resistant hook unit, and is assembled from a claw portion 4 (Fig. 4), an intermediate plate 5 (Fig. 5), a compression plate 6 (Fig. 6), an operation plate 7 (Fig. 7), a bottom plate 8 (Fig. 8), a cover plate 9 (Fig. 9), a first coil spring 12, a second coil spring 13, and a lock spring 14. These elements, except for the first coil spring 12 and the second coil spring 13, are plate-like elements obtained by bending or punching a metal plate of a predetermined shape.

As shown in FIG. 3, in this embodiment, the case of the movable wind-resistant hook F (five sides are closed, i.e., the bottom surface 80 of the bottom plate 8, the top surface 90 of the cover plate 9, the hanging wall 91, the first side wall 92, and the second side wall 93, and the tip side is open) is formed from the bottom plate 8 and the cover plate 9, and the claw portion 4, the intermediate plate 5, the compression plate 6, the operation plate 7, the first coil spring 12, the second coil spring 13, and the lock spring 14 are stored inside. The wind-resistant hook F according to this embodiment is attached to the surface of the slat 10 via the mounting plate 15 (FIG. 10). More specifically, the mounting plate 15 is fixed to the longitudinal end of the slat 10, and the case of the wind-resistant hook F (the bottom surface 80 of the bottom plate 8) is attached to this mounting plate 15.

The claw portion 4 is movable between the storage position and the locking position, and the operation plate 7, the intermediate plate 5, and the compression plate 6 are slidable. In conjunction with the sliding movement of the operation plate 7, the claw portion 4 moves from the storage position to the locking position and from the locking position to the storage position. The operation plate 7 and the intermediate plate 5 are connected via a first coil spring 12, and the intermediate plate 5 slides in conjunction with the sliding movement of the operation plate 7. The base end portion of the claw portion 4 is locked or loosely fitted with the tip end portion of the intermediate plate 5 with some play, and the claw portion 4 moves between the storage position and the locking position in conjunction with the sliding movement of the intermediate plate 5. The intermediate plate 5 and the compression plate 6 are connected via a second coil spring 13, and the compression plate 6 can slide in conjunction with the sliding movement of the intermediate plate 5, which is linked to the sliding movement of the operation plate 7, as one unit with the operation plate 7 and the intermediate plate 5.

The elements constituting the wind-resistant hook F are described in detail below. The description is mainly based on the posture of each element shown in each figure, and it should be noted that the posture of each element differs from that of the wind-resistant hook F when it is actually attached to the slat 10. In this specification, when the wind-resistant hook F is attached to the longitudinal end of the slat 10, the side farthest from the longitudinal center of the slat 10 is called the tip side or front side, and the side closest to it is called the base side or rear side. The position when the operating plate 7 moves to the most base side or rear side is called the first position, and the position when it moves to the most tip side or front side is called the second position. The direction in which the operating plate 7 slides from the first position to the second position (the direction toward the tip side or forward) is called the first direction, and the direction in which the operating plate 7 slides from the second position to the first position (the direction toward the base side or rear) is called the second direction.

[B-2] Claw portion As shown in Fig. 4, the claw portion 4 has a main body integrally formed from a front portion 40 and a rear portion 41 in a "L" shape in side view, and a locking piece 42 in a "L" shape in side view is integrally formed in a folded manner at the tip of the main body (the tip of the front portion 40). The angle between the front portion 40 and the locking piece 42 is an acute angle.

The base end portion of the claw portion 4 comprises a base end portion 41' of the rear portion 41, a pair of hanging pieces 43 hanging from both widthwise ends of the base end portion 41', and a rising piece 44 located between the pair of hanging pieces 43 and rising vertically from the base end portion 41'. The angle between the rear portion 41 and the hanging piece 43 is approximately a right angle, and the angle between the rear portion 41 and the rising piece 44 is approximately a right angle. In a side view, the hanging piece 43 and the rising piece 44 extend in a straight line, and the rear portion 41 extends perpendicularly to this straight line. The locking piece 42 and the rising piece 44 are bent and formed on the same side (upper side in the embodiment of FIG. 4) relative to the main body (the front portion 40 and the rear portion 41).

The claw portion 4 is a movable element, and when the shutter is opened or closed, or when the opening is normally fully closed, it is in the stored position so as not to interfere with the opening and closing of the shutter. In conjunction with the operation plate 7 in the first position sliding in the first direction, the claw portion 4 slides from the stored position toward the tip and protrudes from the tip of the case (tip edge 900 of the top surface portion 90, tip edge 921 of the first side wall 92, tip edge 931 of the second side wall 93), and further rotates to assume the locking position. When the claw portion 4 is in the locking position, the operation plate 7 is in the second position, and in conjunction with the operation plate 7 in the second position sliding in the second direction, the claw portion 4 changes from the locking position to the stored position.

[B-3] Intermediate plate As shown in Figure 5, the intermediate plate 5 has a roughly rectangular surface portion 50 with predetermined length and width dimensions, and the tip side of the surface portion 50 is a wide portion 51. At the tip of the surface portion 50 (the tip of the wide portion 51), a rising piece 52 that rises vertically across the entire width of the wide portion 51 is formed, and at the base end side of the wide portion 51, a pair of rising pieces 53 that rise vertically are formed.

A rising piece 54 is formed at the base end of the face portion 50. An opening 55 is formed in the face portion 50 extending in the length direction, with the base end of the opening 55 reaching the rising piece 54, and a connecting portion 540 is formed on the base end side (rear end) of the first coil spring 12 on the rising piece 54. A rising piece 56 is formed at the tip of the opening 55, which is a connecting portion on the tip end side (front end) of the second coil spring 13.

A pair of protrusions 57 that protrude in the width direction are formed on the side edge 500 of the face portion 50, located closer to the base end than the center of the length of the face portion 50. Each protrusion 57 has a front edge 570 that is located on the tip side of the face portion 50.

At the tip side of the intermediate plate 5, a rising piece 52 and a rising piece 53 are formed at both ends of the width direction of the wide portion 51, and a pair of grooves 58 are formed from the rising pieces 52 and 53 and both ends of the width direction of the wide portion 51. The width dimension of the wide portion 51 is approximately the same as the width dimension of the claw portion 4. The width dimension of the rising piece 53 is slightly larger than the width dimension of the hanging piece 43 of the claw portion 4. The width dimension of the rising piece 44 of the claw portion 4 is smaller than the distance between the left and right rising pieces 53 of the intermediate plate 5. The height of the rising piece 52 is lower than the height of the rising piece 53. The groove 58 is designed to receive the hanging piece 43 of the base end side portion of the claw portion 4 with play, and the hanging piece 43 of the base end side portion of the claw portion 4 can rotate while being received in the groove 58.

[B-4] Compression Plate As shown in Fig. 6, the compression plate 6 comprises a substantially rectangular surface portion 60, a narrow abutment portion 61 at the tip of the surface portion 60, and a narrow hanging piece 62 at the base end of the surface portion 60. An opening 63 extending in the front-rear direction is formed in the surface portion 60, the rear end of the opening 63 reaches the upper half of the hanging piece 62, and a connecting portion 620 on the rear end side of the second coil spring 13 is formed in the lower half of the hanging piece 62.

The width dimension of the abutment portion 61 formed at the tip of the compression plate 6 is smaller than the width dimension of the rising piece 44 of the claw portion 4 and the dimension between the pair of rising pieces 53 of the intermediate plate 5. The compression plate 6 is set in such a state that the lower surfaces of both ends in the width direction on the tip side of the surface portion 60 are placed (abutted) on the upper ends of the rising pieces 53 of the intermediate plate 5, and the abutment portion 61 is abutted against the outer surface of the rising piece 44 of the claw portion 4 (the hanging piece 43 is received in the concave groove 58), the surface portion 60 faces the front part of the surface portion 50 of the intermediate plate 5, and the lower end of the hanging piece 62 on the base end side of the surface portion 60 is abutted against the upper surface of the surface portion 50. When the compression plate 6 is set against the intermediate plate 5, the rising piece 56 of the intermediate plate 5 is located in front of the opening 63 of the surface portion 60 of the compression plate 6.

The rising piece 56 of the intermediate plate 5 is a predetermined distance forward from the connecting portion 620 of the compression plate 6. The second coil spring 13 is a tension coil spring, and in a tensioned state, the tip side (front end) is connected to the rising piece 56 of the intermediate plate 5, and the base end side (rear end) is connected to the connecting portion 620 of the compression plate 6. The tips of the first side wall 81 and the second side wall 82 of the bottom plate 8 abut against the outer surface (rear surface) of the tip side rising piece 53 of the intermediate plate 5, and the movement of the intermediate plate 5 toward the rear side is restricted (this movement restriction is optional, and the movement may not be restricted). The biasing force of the second coil spring 13 connecting the intermediate plate 5 and the compression plate 6 acts to move the compression plate 6 forward, and the abutment portion 61 at the tip of the compression plate 6 abuts against the rising piece 44 at the base end side portion of the claw portion 4 so as to press the rising piece 44.

When the second coil spring 13 is attached to the intermediate plate 5 and the compression plate 6, the front portion of the surface 50 of the intermediate plate 5 faces the surface 60 of the compression plate 6, and the second coil spring 13 is arranged so that a part of the upper side is located in the opening 63 of the surface 60 and a part of the lower side is located in the opening 55 of the surface 50. By forming the openings 55 and 63 at the second coil spring 13, the distance between the surface 50 of the intermediate plate 5 and the surface 60 of the compression plate 6 is made as small as possible, and the thickness of the case of the movable wind-resistant hook F is made thin and compact. Note that instead of the openings 55 and 63, a concave groove may be engaged in the surfaces 50 and 60 to partially receive the second coil spring 13.

The compression plate 6 rests on the intermediate plate 5 and slides back and forth inside the case together with the intermediate plate 5 as the intermediate plate 5 slides back and forth. The compression plate 6 rests slidably on the intermediate plate 5 and can slide relative to the intermediate plate 5 in response to changes in the length of the second coil spring 13.

[B-5] Operation Plate As shown in Fig. 7, the operation plate 7 comprises a face portion 70 having a substantially rectangular shape in a plan view, a hanging piece 71 located at the tip of the face portion 70 and hanging down, a hanging piece 72 located at the base end of the face portion 70 and hanging down, a rear face portion 73 extending rearward from the lower end of the hanging piece 72, and a rising piece 74 rising up from the rear end of the rear face portion 73. The width dimension of the hanging pieces 71, 72 is slightly smaller than the width dimension of the face portion 70, and the width dimensions of the rear face portion 73 and the rising piece 74 are the same as the width dimension of the hanging piece 72.

The lower end of the hanging piece 71 is cut out to a predetermined width to form a recess 710. The width of the recess 710 is slightly larger than the width of the surface portion 50 of the intermediate plate 5. The hanging piece 71 is set so that when the surface portion 50 of the intermediate plate 5 is received in the recess 710, the lower end of the hanging piece 71 abuts against the bottom surface portion 80 of the bottom plate 8, and the inner surface (rear surface) of the hanging piece 71 abuts or engages with the front edge 570 of the protruding piece 57 of the intermediate plate 5. At this time, the surface portion 70 of the operation plate 7 faces the rear portion of the surface portion 50 of the intermediate plate 5. That is, the surface portion 60 of the compression plate 6 faces the front portion of the surface portion 50 of the intermediate plate 5, and the surface portion 70 of the operation plate 7 faces the rear portion of the surface portion 50 of the intermediate plate 5. In a plan view, the surface portion 60 of the compression plate 6 and the surface portion 70 of the operation plate 7 are arranged in the front-rear direction and are stored in the case.

An opening 75 is formed in the surface portion 70 of the operation plate 7 from the front end toward the rear, and a connecting portion 711 for the front end of the first coil spring 12 is formed in the hanging piece 71. The connecting portion 711 of the hanging piece 71 of the operation plate is a predetermined distance forward from the connecting portion 540 of the rising piece 54 of the intermediate plate 5. The first coil spring 12 is a tension coil spring, and when tensioned to a predetermined length, the tip side (front end) is connected to the connecting portion 711 of the hanging piece 71 and the base end side (rear end) is connected to the connecting portion 540 of the rising piece 54.

The inner surface of the hanging piece 71 at the tip of the operation plate 7 engages with the front edge 570 of the protruding piece 57 of the intermediate plate 5, restricting the movement of the operation plate 7 backward relative to the intermediate plate 5, and the outer surface of the rising piece 53 at the tip of the intermediate plate 5 abuts against the tip edges (front edges) 810, 820 of the first side wall 81 and the second side wall 82 of the bottom plate 8, restricting the movement of the intermediate plate 5 backward. The biasing force of the first coil spring 12 connecting the operation plate 7 and the intermediate plate 5 acts against the force sliding the operation plate 7 forward, and when the operation plate 7 is slid forward, the operation plate 7 and the intermediate plate 5 move together toward the tip while maintaining the tensioned length of the first coil spring 12.

When the first coil spring 12 is attached to the intermediate plate 5 and the operation plate 7, the rear portion of the surface 50 of the intermediate plate 5 faces the surface 70 of the operation plate 7, and the first coil spring 12 is arranged so that a part of the upper side is located in the opening 75 of the surface 70 and a part of the lower side is located in the opening 55 of the surface 50. By forming the openings 55, 75 at the first coil spring 12, the gap between the surface 50 of the intermediate plate 5 and the surface 70 of the operation plate 7 is made as small as possible, and the thickness of the case of the movable wind-resistant hook F is made thin and compact. Note that instead of the openings 55, 75, a concave groove may be engaged in the surfaces 50, 70 to partially receive the first coil spring 12.

As shown in Figures 7 and 20, a recess 701 is formed on one side edge 700 of the surface portion 70 of the operation plate 7, in which the lock spring 14 attached to the second side wall 82 of the bottom plate 8 is located. The recess 701 is generally trapezoidal in plan view, with a front inclined edge 702, a rear inclined edge 703, and a bottom edge 704, and a first protrusion 76 located on the tip side and a second protrusion 77 located on the base end side are formed on the bottom edge 704 of the recess 701. A first fitting receiving portion 78 is formed in front of the first protrusion 76, and a second fitting receiving portion 79 is formed behind the second protrusion 77. The lock spring 14 in this embodiment is a leaf spring and has a protruding fitting protrusion 140.

When the mating protrusion 140 of the lock spring 14 is in an engaged state with the first mating receiving portion 78 (first mating state), the operation plate 7 is in a first position and the wind-resistant hook F is in an inoperative state (the claw portion 4 is in a stored position). The first position of the operation plate 7 is maintained by the mating protrusion 140 of the lock spring 14 being in an engaged state with the first mating receiving portion 78 (first mating state). When the mating protrusion 140 of the lock spring 14 is in an engaged state with the second mating receiving portion 79 (second mating state), the operation plate 7 is in a second position and the wind-resistant hook F is in an activated state (the claw portion 4 is in a locked position). The second position of the operation plate 7 is maintained by the mating protrusion 140 of the lock spring 14 being in an engaged state with the second mating receiving portion 79 (second mating state). The first and second mated states can be released by placing a finger on the raised piece 74 of the operation plate 7 and manually sliding the operation plate 7. When the operation plate 7 slides back and forth between the first position and the second position, the mating protrusion 140 of the lock spring 14 slides against the bottom edge 704 of the recess 701 (see Figures 13 and 14).

As shown in FIG. 20, the upper surface of the surface portion 70 of the operation panel 7 has a first display portion G located at the front side and a second display portion R located at the rear side adjacent to each other in the front-rear direction. The first display portion G indicates that the wind-resistant hook F is in an inoperative state, and the second display portion R indicates that the wind-resistant hook F is in an activated state. The first display portion G and the second display portion R are visually distinguishable. Typically, the first display portion G and the second display portion R are distinguishable by color. In this embodiment, the first display portion G is a green sticker, and the second display portion R is a red sticker. Note that the color stickers are merely examples, and the first display portion G and the second display portion R may be paint of a predetermined color applied to a predetermined area of the surface portion 70, and the paint may be fluorescent paint or phosphorescent paint. The first display portion G and the second display portion R may also be distinguishable by symbols or letters.

[B-6] Bottom plate As shown in FIG. 8, the bottom plate 8 includes a bottom surface portion 80, and a first side wall 81 and a second side wall 82 that rise from the side edges of the bottom surface portion 80 in an opposing manner. The first side wall 81 includes a vertical leading edge 810, and a locking protrusion 811 is formed at the rear end. The second side wall 82 includes a vertical leading edge 820, and a locking protrusion 821 is formed at the rear end. The length dimension of the first side wall 81 and the second side wall 82 is shorter than the length dimension of the bottom surface portion 80, and the bottom surface portion 80 includes a front side portion 80A located forward of the leading edges 810 and 820 of the first side wall 81 and the second side wall 82, an intermediate portion 80B corresponding to the first side wall 81 and the second side wall 82, and a rear side portion 80C located behind the first side wall 81 and the second side wall 82. A protrusion 83 having a curved periphery is formed at the tip of the bottom portion 80 (front portion 80A). A rising piece 84, a horizontal piece 85, and a hanging piece 86 are formed at the rear end side of the bottom portion 80 (rear portion 80C). If the slat 10 is biased in the width direction of the opening when the shutter is opened or closed or when the opening is fully closed, the protrusion 83 may come into contact with the inner surface of the bottom wall 32 of the guide rail 3, but the curved periphery of the protrusion 83 slides against the inner surface of the bottom wall 32 and the bottom piece 231 (tapers 2310, 2311), allowing the shutter to be opened and closed smoothly.

A slit 87 is formed between the front portions of the first side wall 81 and the second side wall 82 and the bottom surface portion 80. An opening or cutout portion 801 is formed in the bottom surface portion 80 at the base end of the front portion 80A and to the side of the middle portion 80B, and the slit 87 is integrally formed with the cutout portion 801 at the base end of the front portion 80A. Screw holes 812, 822 are formed on the front end sides of the first side wall 81 and the second side wall 82.

A concave cutout is formed in the rear half of the second side wall 82 for mounting the lock spring 14. Projections 823, 823 are formed close to both ends of the bottom edge of the concave cutout, and engaging portions 824, 824 are formed adjacent to the front and rear sides of the projections 823, with a space 825 being formed between the projections 823. The lock spring 14 is a leaf spring and includes a protruding mating protrusion 140, narrow pieces 141, 141 located on both sides of the mating protrusion 140, and curved locking pieces 142, 142 at the tips of the narrow pieces 141, 141. The locking pieces 142, 142 are locked to the locked portions 824, 824, and the narrow pieces 141, 141 and the mating protrusion 140 are positioned inside the second side wall 82, so that the mating protrusion 140 protrudes inward. The mating protrusion 140 is located in the recess 701 of the side edge 700 of the surface portion 70 of the operation plate 7 (see FIG. 12, etc.). When the mating protrusion 140 of the lock spring 14 rides over the first protrusion 76 and the second protrusion 77, the mating protrusion 140 enters the space 825.

In the space surrounded by the bottom surface portion 80 of the bottom plate 8 and the first side wall 81 and the second side wall 82, the operation plate 7, the intermediate plate 5, and the compression plate 6 are accommodated so as to be slidable in the length direction of the bottom surface portion 80. The width dimension of the surface portion 50 of the intermediate plate 5 is smaller than the dimension between the inner surfaces of the first side wall 81 and the second side wall 82, and the dimension between the tips of the pair of protrusions 57 is approximately the same as (slightly smaller than) the dimension between the inner surfaces of the first side wall 81 and the second side wall 82, and is slidable against the first side wall 81 and the second side wall 82. The width dimension of the surface portion 60 of the compression plate 6 and the width dimension of the surface portion 70 of the operation plate 7 are approximately the same as (slightly smaller than) the dimension between the first side wall 81 and the second side wall 82, and are slidable against the first side wall 81 and the second side wall 82. The width dimension of the wide portion 51 at the tip side of the intermediate plate 5 is larger than the dimension between the inner surfaces of the first side wall 81 and the second side wall 82, and is approximately the same as the dimension between the outer surfaces of the first side wall 81 and the second side wall 82.

When the intermediate plate 5 is set on the bottom plate 8, the leading edges 810, 820 of the first side wall 81 and the second side wall 82 abut against the outer surface of the second rising piece 53 of the intermediate plate 5, and the hanging piece 72 at the base end of the face portion 70 of the operating plate 7 set on the intermediate plate 5 approximately coincides with the rear ends of the first side wall 81 and the second side wall 82.

[B-7] Cover plate As shown in FIG. 9, the cover plate 9 has an upper surface portion 90 having a rectangular shape in a plan view, a hanging wall 91 at the base end of the upper surface portion 90, a first side wall 92 and a second side wall 93 hanging from the side edges at both ends in the width direction of the upper surface portion 90, and the tip side is open. The length of the cover plate 9 is shorter than the length of the bottom plate 8 and longer than the length of the side walls 81 and 82 of the bottom plate 8. An opening 94 is formed at the tip side of the upper surface portion 90, and an opening 95 is formed at the base end side of the upper surface portion 90. The first side wall 92 and the second side wall 93 have U-shaped insertion holes 920 and 930 formed at the portion located behind the opening 94 of the upper surface portion 90. A recess 910 is formed by cutting out the lower end of the hanging wall 91 at the base end. The width dimension of the recess 910 is slightly larger than the width dimension of the rear surface portion 73 of the operation plate 7.

The opening 94 is configured to locate the rising piece 44 of the base end portion of the claw portion 4. The rising piece 44 of the claw portion 4 moves in the front-rear direction within the opening 94 when the claw portion 4 moves. The opening 94 has a first edge 940 on the rear side and a second edge 941 on the front side, and when the operating plate 7 is in the first position, the rising piece 44 is close to or in contact with the first edge 940, and when the operating plate 7 moves in the first direction, the rising piece 44 moves forward within the opening 94 and comes into contact with the second edge 941.

The opening 95 exposes a portion of the surface 70 of the operation plate 7, and when the operation plate 7 is in the first position, the first display portion G is located in the opening 95 and exposed, and when the operation plate 7 is in the second position, the second display portion R is located in the opening 95 and exposed.

The dimension between the inner surfaces of the first side wall 92 and the second side wall 93 of the cover plate 9 is slightly larger than the dimension between the outer surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and the cover plate 9 is placed over the bottom plate 8 to form a case for the wind-resistant hook F. Locking holes 96 are formed in the upper halves of both widthwise ends of the hanging wall 91, and the locking protrusions 811, 821 at the rear ends of the first side wall 81 and the second side wall 82 of the bottom plate 8 are locked into the locking holes 96 to position the cover plate 9 in the longitudinal direction of the bottom plate 8. At this time, the insertion holes 920, 930 in the first side wall 92 and the second side wall 93 of the cover plate 9 are aligned with the screw holes 812, 822 in the first side wall 81 and the second side wall 82 of the bottom plate 8, respectively, and the first side wall 92 and the second side wall 93 of the cover plate 9 are fixed to the first side wall 81 and the second side wall 82 of the bottom plate 8 by the screws 17.

[B-8] Assembly of Wind-Resistant Hook The intermediate plate 5, claw portion 4, compression plate 6, operation plate 7, first coil spring 12, second coil spring 13, and lock spring 14 are arranged and set on the bottom plate 8, and then covered with the cover plate 9, to store these elements in a case consisting of the bottom plate 8 and the cover plate 9 to form a wind-resistant hook unit. When set, the claw portion 4 is in the stored position and the operation plate 7 is in the first position, and the cover plate 9 is then placed on and fixed to the bottom plate 8 to fix the positions of each element.

The width dimension of the wide portion 51 of the intermediate plate 5 is larger than the dimension between the inner surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and is located on the tip side of the tip of the first side wall 81 and the second side wall 82. The dimension between the protruding pieces 57 of the intermediate plate 5 is approximately the same as the dimension between the inner surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and the intermediate plate 5 can slide in the length direction with the surface portion 50 placed on the upper surface of the bottom surface portion 80. The intermediate plate 5 is set with the surface portion 50 placed on the bottom surface portion 80 of the bottom plate 8, and the outer surfaces of the rising pieces 53 at both ends of the width direction of the wide portion 51 on the tip side abut against the tip edges 810, 820 of the first side wall 81 and the second side wall 82 of the bottom plate 8. From this state, the intermediate plate 5 can slide forward.

The claw portion 4 is in a position where the bent portion of the main body (front portion 40 and rear portion 41) is in contact with the front portion 80A of the bottom surface portion 80 of the bottom plate 8, and the base end portion (corner portion formed by the base end portion 41' of the rear portion 41 and the hanging piece 43) is engaged with a pair of rising pieces 52 at the tip end portion of the intermediate plate 5. The hanging piece 43 and the rising piece 44 at the base end portion of the claw portion 4 are inclined with respect to the bottom surface (wide portion 51) of the groove 58, and the pair of hanging pieces 43 are received in the groove 58 with some play. From this state, the claw portion 4 can slide forward while the bent portion of the main body is in sliding contact with the front portion 80A of the bottom surface portion 80 of the bottom plate 8, and can rotate so as to rise from the front portion 80A.

The width dimension of the surface portion 70 of the operation plate 7 is approximately the same as the dimension between the inner surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and the lower end portion of the inner surface of the hanging piece 71 abuts against the front edge 570 of the protruding piece 57 of the intermediate plate 5, the lower end abuts against the upper surface of the bottom surface portion 80 of the bottom plate 8, and the rear surface portion 73 abuts against the upper surface of the bottom surface portion 80 of the bottom plate 8. At this time, the upper surface of the surface portion 70 of the operation plate 7 extends horizontally.

When the first coil spring 12 is stretched from its natural length in a state where no external force is acting, its tip is connected to the connecting part 711 of the operating plate 7 and its base end is connected to the connecting part 540 of the intermediate plate 5, so that a part of the upper side of the first coil spring 12 is located in the opening 75 of the face part 70 and a part of the lower side is located in the opening 55 of the face part 50.

The first position of the operation plate 7 is locked by engaging the engagement protrusion 140 of the lock spring 14 attached to the second side wall 82 of the bottom plate 8 with the first engagement receiving portion 78 on the side edge 700 of the face portion 70 of the operation plate 7 to establish a first engagement state. From this state, the operation plate 7 can be slid forward by releasing the first engagement state.

The width dimension of the compression plate 6 is approximately the same as the dimension between the inner faces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and the left and right ends of the tip side portion are placed on the upper ends of the rising pieces 53 that form the grooves 58, and the lower ends of the hanging pieces 62 are abutted against the upper surface of the surface portion 50 of the intermediate plate 5. At this time, the surface portion 60 of the compression plate 6 extends horizontally.

When the second coil spring 13 is stretched from its natural length in a state where no external force is acting, its tip is connected to the connecting part (rising piece 56) of the intermediate plate 5 and its base end is connected to the connecting part 620 of the compression plate 6, with a part of the upper side of the second coil spring 13 positioned in the opening 63 of the face part 60 and a part of the lower side positioned in the opening 55 of the face part 50.

The compression plate 6 is in contact with the tip abutment portion 61 so as to press forward against the inclined rising piece 44 at the base end portion of the claw portion 4. From this state, the compression plate 6 can slide forward together with the operation plate 7 and the intermediate plate 5.

With the intermediate plate 5, claw portion 4, operation plate 7, and compression plate 6 set on the bottom plate 8, the cover plate 9 is placed on the bottom plate 8, and the locking protrusions 811, 821 at the rear ends of the first side wall 81 and the second side wall 82 of the bottom plate 8 are locked into the locking holes 96 to position the bottom plate 8. The first side wall 92 and the second side wall 93 of the cover plate 9 are fixed to the first side wall 81 and the second side wall 82 of the bottom plate 8 by the screws 17. The width dimension of the wide portion 51 of the intermediate plate 5 is approximately the same as (slightly smaller than) the dimension between the inner surfaces of the first side wall 92 and the second side wall 93 of the cover plate 9, and both widthwise ends of the wide portion 51 of the intermediate plate 5 are in sliding contact with the inner surfaces of the first side wall 92 and the second side wall 93 of the cover plate 9. The widthwise ends of the protrusions 57 of the intermediate plate 5 are in sliding contact with the inner surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8. Therefore, the front side of the intermediate plate 5 is in sliding contact with the inner surface of the case, and the rear side is in sliding contact with the inner surface of the case, so that the intermediate plate 5 can slide stably relative to the case. The rear surface portion 73 of the operation plate 7 extends rearward through the recess 910, and the rising piece 74 serves as a finger hook when sliding the operation plate 7. A part of the claw portion 4 is located forward of the tip edge 900 of the top surface portion 90, the tip edge 921 of the first side wall 92, and the tip edge 931 of the second side wall 93. The rising piece 44 of the base end portion of the claw portion 4 is located on the side closer to the first edge portion 940 of the opening 94. The top surface portion 90 of the cover plate 9 and the surface portion 70 of the operation plate 7 are closely opposed to each other, and the first display portion G of the surface portion 70 of the operation plate 7 is exposed in the opening 95. A scratch-proof seal 97 is attached to the surface of the base end of the case, covering the top surface 90, the first side wall 92, and the second side wall 93, preventing direct contact between the case surface and the slats 10 when the shutter curtain 1 is rolled up.

[B-9] The movable wind-resistant hook F is attached to the longitudinal end of the slat 10 via the mounting plate 15. As shown in FIG. 10, the mounting plate 15 is made of a surface portion 150 having a rectangular shape in a plan view. The surface portion 150 has side edges 1500, 1500 extending in the longitudinal direction and a front end edge 1501, and a pair of slide locking pieces 151 are formed in a rising shape, positioned forward from the midpoint of the longitudinal direction of the side edges 1500, 1500. A rising piece 152 is formed on the rear end side of the surface portion 150, and further, a rear piece 153 is formed from the rising piece 152 toward the rear, and a screw hole 154 is formed in the rear piece 153.

As shown in FIG. 17, the slat 10 is composed of a surface portion 100 of a predetermined height, an upper interlocking portion 101 integrally formed at the upper end of the surface portion 100, and a lower interlocking portion 102 integrally formed at the lower end of the surface portion 100, and the surface portion 100 is bulging or approximately trapezoidal in side view or cross-sectional view. In this specification, the bulging side is referred to as the front side and the recessed side is referred to as the back side. A space is formed on the back side of the slat 10, and a wind-resistant hook F is attached so as to fit into this space.

The installation of the wind-resistant hook F according to this embodiment will be described with reference to Figures 17 and 18. As shown in Figure 17, the back surface of the face portion 150 of the mounting plate 15 is abutted against the back surface of the face portion 100 of the slat 10, and the front edge 1501 of the mounting plate 15 is aligned with the longitudinal edge 103 of the slat 10 and fixed with a rivet 155.

The wind-resistant hook F is attached to the mounting plate 15 attached at the longitudinal end of the back surface of the slat 10. As shown in Figures 17 and 18 (top), the bottom surface 80 of the bottom plate 8 of the wind-resistant hook F is temporarily attached from the front to the surface of the surface 150 of the mounting plate 15. At this time, the pair of slide locking pieces 151 are inserted into the slits 87 formed in the bottom surface 80, and the bottom surface 80 is abutted against the surface of the surface 150. The rivet 155 is located within the notch 801 formed in the bottom surface 80. The rear rising piece 84 of the bottom surface 80 abuts against the rear rising piece 152 of the surface 150 of the mounting plate 15, and the horizontal piece 85 abuts against the rear piece 153.

18, the wind-resistant hook F is slid toward the tip side relative to the mounting plate 15, and the slit 87 moves relative to the slide locking piece 151, so that the slide locking piece 151 and the slit 87 are locked, resulting in the state shown in the bottom diagram of FIG. 18. In the bottom diagram of FIG. 18, the tip edge 800 of the bottom surface portion 80 of the wind-resistant hook F coincides with the longitudinal edge 103 of the slat 10, and the protruding piece 83 protrudes from the longitudinal edge 103 of the slat 10. The screw hole 154 of the rear piece 153 coincides with the insertion hole 850 of the horizontal piece 85, and the rear end portion of the wind-resistant hook F and the rear end portion of the mounting plate 15 are fixed with the screw 18. In the bottom diagram of FIG. 18, the rivet 155 is located approximately in the center of the cutout portion 801. To remove the wind-resistant hook F, remove the screw 18 and slide the wind-resistant hook F relative to the mounting plate 15 in a direction that releases the engagement between the slide locking piece 151 and the slit 87. By attaching the wind-resistant hook F to the slat 10 via the mounting plate 15, the wind-resistant hook F can be easily replaced.

[B-10] Hook receiver Inside the guide rail 3, a hook receiver 16 is provided on which the wind-resistant hook F in an operating state can be engaged. As shown in FIG. 2 and FIG. 21(C), the guide rail 3 is attached in a protruding manner from the frame or wall W via the guide rail base material 3'. The guide rail 3 has a U-shaped cross section consisting of the opposing first side wall 30 and second side wall 31, and a bottom wall 32 connecting the base ends of the first side wall 30 and the second side wall 31, and the second side wall 31 is fixed to the guide rail base material 3'. A guide groove 35 for receiving the longitudinal end of the slat 10 is formed between the front part 33 of the first side wall 30 and the front part 34 of the second side wall 31. Inside the guide rail 3, a space extending from the guide groove 35 to the bottom wall 32 with the same width serves as a slat end receiving space. In this embodiment, the hook receiver 16 is located at a predetermined height of the guide rail 3 and is fixed to the inner surface of the first side wall 30 of the guide rail 3. The hook receiver 16 is provided inside the guide rail 3, but is not located in the slat end receiving space, and does not affect the opening and closing operation of the shutter curtain 1. The shutter according to this embodiment is wound forward, but in the case of the shutter being wound backward, the first side wall 30 is fixed to the guide rail base material 3' instead of the second side wall 1 of the guide rail 3. Therefore, in the case of the forward winding, the hook receiver 16 is located on the side farther from the guide rail base material 3' with respect to the shutter core, but in the case of the reverse winding, the hook receiver 16 is located on the side closer to the guide rail base material 3' with respect to the shutter core.

11, the hook receiver 16 has an L-shape in plan view or cross section, with a first side 160 extending in the view direction of the guide rail 3 and a second side 161 extending in the view direction of the guide rail 3, and the first side 160 is fixed to the inner surface of the first side wall 30 of the guide rail 3, and the second side 161 extends in the view direction from the first side wall 30 inside the guide rail 3. In this embodiment, it is fixed to the first side wall 30 at two points, top and bottom, but it may be fixed at three or more points. The width dimension of the second side 161 is a dimension such that the second side 161 does not interfere with the longitudinal end of the slat 10 received inside the guide rail 3. The hook receiver 16 is fixed at a height position corresponding to the height of each wind-resistant hook F when the opening is fully closed. In this embodiment, one hook receiver 16 is provided corresponding to each wind-resistant hook F, and as shown in FIG. 1, four hook receivers 16 are provided on each of the left and right sides. The hook receiver 16 is an elongated member with a predetermined height, which in this embodiment is greater than the height dimension of the slat 10.

An upper surface 162 is formed at the upper end of the hook receiver 16, and a lower surface 163 is formed at the lower end. The upper surface 162 and the lower surface 163 are rectangular in plan view and have a projected dimension larger than the first side 160 but approximately the same as the second side 161, so as not to interfere with the raising and lowering of the shutter curtain 1 under normal circumstances.
When the claw portion 4 in the locked position moves upward, it comes into contact with the upper surface 162, restricting further upward movement of the shutter curtain 1. The hook receiver 16 according to this embodiment has a top-to-bottom symmetrical shape, and when the hook receiver 16 is turned upside down, the lower surface 163 functions as the abutting portion. If use turned upside down is not taken into consideration, the lower surface 163 is an optional element. The hook receiver 16 is integrally formed by bending a plate material of a predetermined shape.

[C] Operation of the Wind-Resistant Hook The operation plate 7, intermediate plate 5, and compression plate 6 are stored in a case consisting of a bottom plate 8 and a cover plate 9 so as to be movable in the front-rear direction, and the claw portion 4 is movable between a stored position and a locked position in conjunction with the sliding movement operation of the operation plate 7. The operation of each element of the wind-resistant hook F will be described in detail with reference to Figures 12 to 16. Note that Figures 12 to 16 are merely examples of the positions and positions of each element of the wind-resistant hook F according to this embodiment, and the explanation of the positions and positions of each element should not be construed as limiting the present invention.

Figure 12 shows a state in which the operating plate 7 is in the first position and the claw portion 4 of the wind-resistant hook is in the stored position. The claw portion 4, intermediate plate 5, compression plate 6, and operating plate 7 are located on the base end side. Figure 15 shows a state in which the operating plate 7 is in the second position and the claw portion 4 of the wind-resistant hook is in the locked position. The claw portion 4, intermediate plate 5, compression plate 6, and operating plate 7 are located on the tip side. Figure 13 shows a state in which the claw portion 4, intermediate plate 5, compression plate 6, and operating plate 7 move forward from the state of Figure 12, and the rising piece 44 of the base end side part of the claw portion 4 abuts against the second edge portion 941 of the opening 94, and Figure 14 shows a state in which the intermediate plate 5 and operating plate 7 move forward from the state of Figure 13 and the claw portion 4 rotates, and the state of Figure 14 becomes the state of Figure 15. The state shown in Figure 12 to the state shown in Figure 15 is a series of operations. FIG. 16 shows the state in which a force is applied to push the claw portion 4 in the state shown in FIG. 15.

[C-1] Inoperative state of wind-resistant hook In Fig. 12, the claw portion 4 is in the stored position, and the wind-resistant hook F is in an inoperative state. The position and posture of each element in the inoperative state of the wind-resistant hook F will be described. The body of the claw portion 4 has the bent portions of the front portion 40 and the rear portion 41 abutting against the upper surface of the front portion 80A of the bottom surface portion 80 of the bottom plate 8, and the front portion 40 and the rear portion 41 extend so as to rise at an angle from the upper surface of the front portion 80A of the bottom surface portion 80. The hanging piece 43 and the rising piece 44 of the base end portion of the claw portion 4 are in an inclined posture in a side view with respect to the bottom of the recessed groove 58, with the upper end of the rising piece 44 facing forward and the lower end of the hanging piece 43 facing backward. The tip end portion of the front portion 40 and the locking piece 42 are located further tip than the tip edge 900 of the cover plate 9, the tip edge 921 of the first side wall 92, and the tip edge 931 of the second side wall 93, the locking piece 42 of the claw portion 4 is located inside the tip edge 800 of the bottom surface portion 80, and the tip of the locking piece 42 is at approximately the same height as the top surface portion 90 of the cover plate 9. The tip edge 800 and the protruding piece 83 of the bottom surface portion 80 of the bottom plate 8 are located forward of the tip end portion of the front portion 40 of the claw portion 4 and the locking piece 42.

The rising piece 44 of the claw portion 4 is in contact with or close to the first edge 940 of the opening 94. The hanging piece 43 of the claw portion 4 is located slightly away from the rising piece 53 at the tip side of the intermediate plate 5, and the hanging piece 43 and/or the base end side portion 41' of the rear portion 41 are in contact with or close to the rising piece 52. In one embodiment, the corner formed by the base end side of the hanging piece 43 and the base end side portion 41' of the rear portion 41 engages with the upper end of the rising piece 52. The hanging piece 43 may be close to or in contact with the rising piece 53 at the tip side portion of the intermediate plate 5.

The lower surface of the distal end portion of the face portion 60 of the compression plate 6 abuts against the upper end of the rising piece 53 of the distal end portion of the intermediate plate 5, and the abutment portion 61 abuts against the rising piece 44 in an inclined position at the base end portion of the claw portion 4, pressing the rising piece 44 toward the distal end. The distal edges 810, 820 of the first side wall 81 and the second side wall 82 of the bottom plate 8 abut against the outer surface of the rising piece 53 formed on the wide portion 51 on the distal side of the intermediate plate 5. With the face portion 50 of the intermediate plate 5 received in the recess 710, the inner surface of the hanging piece 71 abuts against the front edge 570 of the protruding piece 57 of the intermediate plate 5. The fitting protrusion 140 of the lock spring 14 is in a fitting state (first fitting state) with the first fitting receiving portion 78 formed on the side edge 700 of the surface portion 70 of the operation plate 7, and the operation plate 7 is held in the first position. In other words, the non-operating state shown in FIG. 12 is locked. In the state shown in FIG. 12, the operation plate 7, intermediate plate 5, compression plate 6, and claw portion 4 are located on the base end side, and by releasing the locked state, they can be moved toward the tip side (first direction).

The operation plate 7 and intermediate plate 5 are connected by a first coil spring 12, and when the operation plate 7 in the first position is moved in a first direction, the tip side of the first coil spring 12 moves in the first direction, and the base end side of the first coil spring 12 moves in the first direction, causing the base end side of the intermediate plate 5 to move in the first direction. At this time, the first coil spring 12 moves while maintaining its length (without stretching) due to the biasing force. When the tip side of the intermediate plate 5 moves in the first direction, the base end side portion of the claw portion 4 loosely fitted in the groove 58 moves in the first direction.

The operation plate 7 and the compression plate 6 are connected by the second coil spring 13, and when the operation plate 7 is moved in the first direction, the tip side of the second coil spring 13 moves in the first direction, and the base end side of the second coil spring 13 moves in the first direction via the intermediate plate 5, causing the base end side of the compression plate 6 to move in the first direction. The compression plate 6 moves in the first direction while maintaining the tip abutment portion 61 in abutment against the base end portion of the rising piece 44 of the claw portion 4.

The first coil spring 12 and the second coil spring 13 are formed from the same tension coil spring, and in the state shown in FIG. 12, the length of the first coil spring 12 is slightly longer than the length of the second coil spring 13. That is, the force (biasing force) of the first coil spring 12 to return to its original length is greater than the force (biasing force) of the second coil spring 13 to return to its original length. The biasing force of the first coil spring 12 opposes the force that causes the first coil spring 12 to expand, and the biasing force of the second coil spring 13 opposes the force that causes the second coil spring 13 to expand. The biasing force of the first coil spring 12 is related to the rotational return force of the claw portion 4 to the engagement position in the state shown in FIG. 16, and if this rotational return force is to be increased, the biasing force of the first coil spring 12 should be increased. The biasing force of the second coil spring 13 is related to the force with which the compression plate 6 presses the base end portion of the claw portion (the rising piece 44) forward, and if this pressing force is to be increased, the biasing force of the second coil spring 13 should be increased (within a range that does not exceed the biasing force of the first coil spring 12 at the initial stage). The biasing forces of the first coil spring 12 and the second coil spring 13 can be changed by changing the connection position of the first coil spring 12 and the second coil spring 13 or by changing the type of spring. For example, by positioning the front edge 570 of the intermediate plate 5 further forward, the first coil spring 12 can be stretched further when set, thereby increasing the biasing force.

[C-2] Movement from the inoperative state to the activated state In the state shown in Figure 12, when the operating plate 7 is slid in a first direction, the operating plate 7, the intermediate plate 5, and the compression plate 6 move together in the first direction until the rising piece 44 on the base end side of the claw portion 4 abuts the second edge portion 941 on the tip side of the opening 94, resulting in the state shown in Figure 13.

When changing from the state shown in Figure 12 to the state shown in Figure 13, the claw portion 4 slides in the first direction while maintaining the storage position shown in Figure 12. In the state shown in Figure 12, the tip (upper end) of the rising piece 52 at the tip side portion of the intermediate plate 5 abuts against the base end side portion of the claw portion 4 (base end side portion 41' of the rear portion 41), and the abutment portion 61 at the tip of the compression plate 6 presses the base end side portion (rising piece 44) of the claw portion 4 toward the tip side. In this state, when the intermediate plate 5 slides in the first direction, the tip (upper end) of the rising piece 52 at the tip side portion of the intermediate plate 5 moves in the first direction while abutting against the base end side portion 41' of the rear portion 41 of the claw portion 4, and the compression plate 6 is integral with the intermediate plate 5, and the abutment portion 61 at the tip of the compression plate 6 moves in the first direction while pressing the rising piece 44 of the claw portion 4 toward the tip side, and the rising piece 44 of the base end side portion of the claw portion 4 abuts against the second edge 941 of the opening 94, resulting in the state shown in Figure 13. In conjunction with the continued sliding movement of the operation plate 7 in the first direction, the operation plate 7 moves from the state of FIG. 13 through the state of FIG. 14 to the second position, entering the second fitted state, and the wind-resistant hook F in FIG. 15 is activated. In conjunction with the sliding movement of the operation plate 7 in the first direction from the first position to the second position, the intermediate plate 5 slides in the first direction (forward), and the outer surfaces of the pair of rising pieces 53 on the tip side of the intermediate plate 5 move away from the tip edge 810 of the first side wall 81 of the bottom plate 8 and the tip edge 820 of the second side wall 82.

In the state of Figure 13, the claw portion 4, intermediate plate 5, compression plate 6, and operating plate 7 are positioned further toward the tip side relative to the bottom plate 8 and cover plate 9 compared to the state of Figure 12. In the state of Figure 13, the abutment portion 61 at the tip of the compression plate 6 abuts and presses against the rising piece 44 of the claw portion 4 abutting against the second edge portion 941, restricting further movement toward the tip side. When the movement of the rising piece 44 of the base end portion of the claw portion 4 in the first direction is restricted and the tip end portion of the intermediate plate 5 (the portion having the groove 58) slides in the first direction, the hanging piece 43 of the base end portion of the claw portion 4 is received in the groove 58 with some play and is capable of rotating within the groove 58. Therefore, the base end portion of the claw portion 4 (the base end portion 41' of the rear portion 41 and/or the hanging piece 43) is pushed forward by the tip end portion of the intermediate plate 5 (the rising piece 52 and/or the rising piece 53), and the claw portion 4 rotates so that the main body (the front portion 40 and the rear portion 41) rises up from the bottom portion 80, with the rising piece 44 abutting the second edge 941 as a fulcrum. When the operation plate 7 and intermediate plate 5 move from the state shown in FIG. 12 to the state shown in FIG. 13, the abutment portion 61 of the pressure plate 6 constantly presses the rising piece 44 at the base end portion of the claw portion 4 forward, so the claw portion 4 does not rotate and slides forward while maintaining the position shown in FIG. 12.

12 and 13, the hanging piece 43 and the rising piece 44 of the base end portion of the claw portion 4 are inclined relative to the front portion 80A of the bottom portion 80 and the bottom surface (wide portion 51) of the groove 58, but as the main body of the claw portion 4 rotates away from the front portion 80A of the bottom portion 80, the inclination angle of the hanging piece 43 and the rising piece 44 of the base end portion relative to the front portion 80A of the bottom portion 80 and the bottom surface (wide portion 51) of the groove 58 increases. When the operation plate 7 continues to move in the first direction from the state of FIG. 13, the tip side portion of the intermediate plate 5 (the portion with the groove 58) moves in the first direction relative to the claw portion 4 in a state in which the rising piece 44 abuts against the second edge portion 941 of the opening 94, and the rising piece 44 and the hanging piece 43 in the inclined position rotate to a vertical position with the rising piece 44 as a fulcrum. As shown in FIG. 14, in the process of the hanging piece 43 and rising piece 44 of the base end portion of the claw portion 4 rotating from an inclined position to a vertical position, the front portion 40 of the claw portion 4 and the locking piece 42 on the tip side rise up from the front portion 80A of the bottom surface portion 80, the hanging piece 43 and the rising piece 44 assume a vertical position along the inner surface of the rising piece 53 of the tip end portion of the intermediate plate 5, and when the rear portion 41 assumes a horizontal position, the claw portion 4 assumes an engagement position. When the hanging piece 43 and the rising piece 44 of the base end portion of the claw portion 4 are in a vertical position, the hanging piece 43 abuts or is close to the inner surface of the rising piece 53 of the tip end portion of the intermediate plate 5, and the lower surface of the rear portion 41 is separated from the upper end of the rising piece 52 of the tip end portion of the intermediate plate 5.

In this embodiment, when going from the state of FIG. 12 to the state of FIG. 14, the second coil spring 13 stretches a little, and the length of the first coil spring 12 is substantially unchanged. When going from the state of FIG. 14 to the state of FIG. 15, the second coil spring 13 continues to stretch, and the first coil spring 12 also stretches (at this stage, the stretch of the second coil spring 13 is greater than that of the first coil spring 12). When the operating plate 7 slides in the first direction after the rising piece 44 on the base end side of the claw portion 4 abuts against the second edge portion 941 on the tip side of the opening 94, the intermediate plate 5 slides in the first direction, and at this time, the compression plate 6 slides relative to the intermediate plate 5, and the second coil spring 13 connecting the compression plate 6 and the intermediate plate 5 is pulled, and the biasing force increases. This force acts as a force to maintain the engagement position of the claw portion 4.

In the state shown in FIG. 12, when a finger is placed on the rising piece 74 of the operation plate 7 and a force is applied to move the operation plate 7 in the first position in the first direction, the first mating state between the mating protrusion 140 of the lock spring 14 and the first mating receiving portion 78 is released. When the operation plate 7 slides in the first direction to change from the state shown in FIG. 12 to the state shown in FIG. 15, the mating protrusion 140 of the lock spring 14 provided on the second side wall 82 of the bottom plate 8 slides against the bottom edge 704 of the recess 701 provided on the side edge 700 of the surface portion 70 of the operation plate 7, and when the operation plate 7 is in the second position, the mating protrusion 140 of the lock spring 14 and the second mating receiving portion 79 are mated to a second mating state, and the second position of the operation plate 7 is maintained.

[C-3] Operated state of wind-resistant hook In Fig. 15, the claw portion 4 is in the locked position, and the wind-resistant hook F is in the operated state. The position and posture of each element in the operated state of the wind-resistant hook F will be described. The body of the claw portion 4 is such that the folded portions of the front portion 40 and rear portion 41 rise up so as to be separated from the front portion 80A of the bottom surface portion 80 of the bottom plate 8, and the rear portion 41 extends approximately parallel to the upper surface of the front portion 80A of the bottom surface portion 80.

The hanging piece 43 and rising piece 44 of the base end portion of the claw portion 4 are in contact with or close to the inner surface of the second rising piece 53 of the tip end portion of the intermediate plate 5, and are in a substantially vertical position with respect to the bottom (wide portion 51) of the groove 58. The rising piece 44 of the base end portion of the claw portion 4 is in contact with the second edge portion 941 of the opening 94 of the upper surface portion 90 of the cover plate 9, and the upper surface of the rear portion 41, which is in a horizontal position, is in contact with or close to the lower surface of the upper surface portion 90 of the cover plate 9.

The lower surface of the rear portion 41 in the horizontal position is spaced apart from the upper end of the rising piece 52 at the tip end portion of the intermediate plate 5. The entire front portion 40 is located further towards the tip end than the tip edge 900 of the cover plate 9, the tip edge 921 of the first side wall 92, and the tip edge 931 of the second side wall 93, and the locking piece 42 extends in a folded manner from the tip of the front portion 40. The positional relationship between the locking piece 42 of the claw portion 4 in the locked position and the hook receiver 16 will be described later. The tip of the claw portion 4 (the bent portion consisting of the base end of the locking piece 42 and the tip of the front portion 40) is in approximately the same position as the tip of the protruding piece 83.

The tip side portion of the surface portion 60 of the compression plate 6 is located behind the upper end of the rising piece 53 of the tip side portion of the intermediate plate 5, and the abutment portion 61 abuts against the rising piece 44 in a vertical position at the base end portion of the claw portion 4, pressing the rising piece 44 against the second edge portion 941 of the opening 94. The compression plate 6 slides relative to the intermediate plate 5, and the second coil spring 13 connecting the compression plate 6 and the intermediate plate 5 is pulled, increasing the biasing force. This force acts as a force to maintain the engagement position of the claw portion 4. As shown in FIG. 15, the lower surface of the widthwise central portion on the tip side of the surface portion 60 of the compression plate 6 rests on the upper end of the rising piece 56, and the horizontal position of the compression plate 6 is maintained.

The outer surface of the rising piece 53 formed on the wide portion 51 at the tip side of the intermediate plate 5 is spaced forward from the tip edges 810, 820 of the first side wall 81 and the second side wall 82 of the bottom plate 8 (different from the state in Figure 12). When the face portion 50 of the intermediate plate 5 is received in the recess 710, the inner surface of the hanging piece 71 abuts against the front edge 570 of the protruding piece 57 of the intermediate plate 5 (same state as in Figure 12).

The fitting protrusion 140 of the lock spring 14 is in a fitting state (second fitting state) with the second fitting receiving portion 79 formed on the side edge 700 of the face portion 70 of the operation plate 7, and the operation plate 7 is held in the second position. In other words, the locking position of the claw portion 4, i.e., the operating state of the wind-resistant hook F, is locked.

[C-4] Rotation of the claw portion in the operating state of the wind-resistant hook FIG. 16 is a diagram showing a state in which, when the claw portion 4 is in the locking position and the wind-resistant hook F is in the operating state, a force is applied to the claw portion 4 in the locking position to return the claw portion 4 to the stored position. When the claw portion 4, which has been rotated so as to move away from the front side portion 80A of the bottom surface portion 80 of the bottom plate 8, is pushed closer to the front side portion 80A, the claw portion 4 rotates so that the hanging piece 43 and the rising piece 44 are inclined from the vertical position with the rising piece 44 of the base end side portion of the claw portion 4 abutting against the second edge portion 941 of the opening 94, and the base end side portion 41' of the rear portion 41 and/or the hanging piece 43 abuts against the upper end of the rising piece 52 of the tip side portion of the intermediate plate 5 and/or the hanging piece 43 abuts against the rising piece 53, moving the intermediate plate 5 backward (as if pushing it into the case).

The abutment portion 61 of the compression plate 6 abuts against the rising piece 44, which is in an inclined position at the base end portion of the claw portion 4, and presses the rising piece 44 against the second edge portion 941 of the opening 94. However, since the intermediate plate 5 is pushed backward, the length of the second coil spring 13, which was stretched in the state shown in FIG. 15, is shortened in the state shown in FIG. 16.

The second position of the operation plate 7 is maintained in a locked state by maintaining the mating state (second mating state) between the mating protrusion 140 of the lock spring 14 and the second mating receiving portion 79, and as the intermediate plate 5 moves rearward, the front edge 570 of the protrusion 57 of the intermediate plate 5 moves rearward away from the hanging piece 71 of the operation plate 7. At this time, the first coil spring 12 stretches, and a force is applied to move the intermediate plate 5 in the first direction. The force that stretches the first coil spring 12 (when changing from the state in FIG. 15 to the state in FIG. 16) is smaller than the force that disengages the mating state (second mating state) between the mating protrusion 140 of the lock spring 14 and the second mating receiving portion 79, and the first coil spring 12 extends in conjunction with the movement of the intermediate plate 5 in the second direction, so the second mating state is not disengaged. When the force acting on the claw portion 4 is released, the intermediate plate 5 moves forward (in the first direction) due to the biasing force (contraction force) of the first coil spring 12, and the claw portion 4 returns to the locked position shown in FIG. 15.

[D] Wind-resistant hook according to another embodiment A wind-resistant hook F' according to another embodiment will be described with reference to Fig. 28 and Fig. 29. The wind-resistant hook F' is common to the wind-resistant hook F in that it includes a claw portion 4, an intermediate plate 5, a compression plate 6, an operation plate 7, a bottom plate 8, a cover plate 9, a first coil spring 12, a second coil spring 13, and a lock spring 14. The description of the wind-resistant hook F can be used for the description and operation of these elements, except for the following differences.

In the wind-resistant hook F, when the operation plate 7 is in the first position, the fitting protrusion 140 of the lock spring 14 and the first fitting receiving portion 78 formed on the side edge 700 of the surface portion 70 of the operation plate 7 are in a fitting state (first fitting state), thereby maintaining the first position of the operation plate 7. In the wind-resistant hook F', the third coil spring 24 is provided to maintain the first position of the operation plate 7. Specifically, the front end of the third coil spring 24 is connected to the hanging piece 72 located on the rear side of the surface portion 70 of the operation plate 7, and the rear end of the third coil spring 24 is connected to the hanging wall 91 of the cover plate 9. In the wind-resistant hook F', when the operation plate 7 in the first position moves in the first direction, the third coil spring 24 extends first, then the second coil spring 13 extends, and finally the first coil spring 12 extends.

Figure 28 shows the wind-resistant hook F' in an inoperative state, with the operating plate 7 in the first position. Figure 29 shows the wind-resistant hook F' in an activated state, with the operating plate 7 in the second position. When the operating plate 7 is in the first position, the third coil spring 24 holds the operating plate 7 in the first position. When the operating plate 7 slides from the first position to the second position, the fitting protrusion 140 of the lock spring 14 fits into the fitting receiving portion 79' formed on the side edge of the rear surface portion 73 of the operating plate 7, holding the operating plate 7 in the second position and locking the operating state of the wind-resistant hook F'. When the operating plate 7 slides from the first position to the second position, the third coil spring 24 expands and stores force to return to its original length. In the state shown in FIG. 29, when the engagement state in the second position is released and the operation plate 7 in the second position is slid to the first position, the third coil spring 24 assists the sliding movement of the operation plate 7 in the second direction, and the third coil spring 24 holds the operation plate 7 in the first position.

[E] Shutter with Movable Wind-Resistant Hook A shutter with a wind-resistant hook in this embodiment will be described. As shown in Figs. 1 and 2, a plurality of slats (four in this embodiment) 10 located in the middle of the height direction of the shutter curtain 1 in the fully closed position are provided with movable wind-resistant hooks F at both ends in the length direction. The movable wind-resistant hooks F are provided with movable claws 4, and require switching between a non-operating state (claws 4 in the stored position) and an operating state (claws 4 in the locked position). When the shutter curtain 1 is opened or closed, or when the opening is normally fully closed, the claws 4 are in the stored position, and when the opening is fully closed, the claws 4 are in the protruding position to function as wind-resistant hooks. Inside the guide rail 3, hook receivers 16 are provided at heights corresponding to the height positions of the wind-resistant hooks F of the shutter curtain 1 in the fully closed position.

[E-1] Visual confirmation of the stored state and the operating state of the wind-resistant hook Fig. 19 is a front view and a side view of the longitudinal end of the slat 10 to which the wind-resistant hook F is attached, viewed from the rear side. The wind-resistant hook F is attached to the concave portion on the rear side of the slat 10, with the bottom surface portion 80 of the bottom plate 8 facing the slat 10 and the top surface portion 90 of the cover plate 9 facing the rear side (indoor side). The wind-resistant hook F is attached to the slat 10 with the tip edge 800 of the bottom surface portion 80 of the bottom plate 8 coinciding with the longitudinal end edge 103 of the slat 10. In this embodiment, the wind-resistant hook F is attached to the slat 10 via the mounting plate 15.

When the shutter curtain 1 is in the fully closed position, the tip portion of the wind-resistant hook F is located inside the guide rail 3. That is, the wind-resistant hook F is composed of a first portion (inner portion) located inside the guide rail 3 and a second portion (outer portion) located outside the guide rail 3, the first portion (inner portion) includes the claw portion 4 and the opening 94 formed on the upper surface portion 90 of the cover plate 9, and the second portion (outer portion) includes the opening 95 formed on the upper surface portion 90 of the cover plate 9, the warning display provided on the upper surface portion 90 of the cover plate 9 between the openings 94 and 95, the rear surface portion 73 of the operation plate 7, and the raised piece (finger hook portion) 74.

The above figure shows the wind-resistant hook F in an inoperative state, with the claw portion 4 in the stored position and the operating plate 7 in the first position. The first display portion G on the surface portion 70 of the operating plate 7 is located in an opening 95 formed in the upper surface portion 90 of the cover plate 9 and is exposed from the opening 95. The claw portion 4 is in a position that does not protrude from the longitudinal edge 103 of the slat 10. The rising piece 44 at the base end portion of the claw portion 4 is close to the first edge 940 of the opening 94 in the upper surface portion 90 of the cover plate 9. The protruding piece 83 at the tip of the bottom surface portion 80 protrudes from the longitudinal edge 103 of the slat.

The figure below shows the operating state of the wind-resistant hook F, with the claw 4 in the locked position and the operation plate 7 in the second position. The second display R on the surface 70 of the operation plate 7 is located in an opening 95 formed in the upper surface 90 of the cover plate 9 and is exposed through the opening 95. The locking piece 42 at the tip of the claw 4 protrudes from the longitudinal edge 103 of the slat 10. The rising piece 44 at the base end portion of the claw 4 abuts against the second edge 941 of the opening 94 in the upper surface 90 of the cover plate 9. The protruding piece 83 at the tip of the bottom surface 80 is in approximately the same position as the claw 4 (the corner between the locking piece 42 and the front portion 40) protruding from the longitudinal edge 103 of the slat.

Cautions are displayed on the top surface 90 of the cover plate 9 of the wind-resistant hook F, located between the openings 94 and 95. The cautions state that the shutter is locked (operated) when the second display R is exposed from the opening 95, and that the shutter is unlocked (not operated) when the first display G is exposed from the opening 95, and state that "Do not open or close the shutter when the second display R is exposed from the opening 95."

The wind-resistant hook F has a first part (inner part) located inside the guide rail 3 and a second part (outer part) located outside the guide rail 3. The second part (outer part) has the first display part G to the second display part R located in the opening 95 and exposed from the opening 95, and a warning display, and when attempting to raise the shutter curtain 1 with the opening fully closed, the operator can visually determine whether the first display part G or the second display part R is exposed.

In this embodiment, the shutter curtain 1 is provided with multiple wind-resistant hooks F, which are provided at both longitudinal ends of multiple slats (four in this embodiment) 10 located in the middle of the height of the opening blocking portion 1' of the shutter curtain 1 when it is in the fully closed position. All wind-resistant hooks F are located within a limited, fixed height range compared to the opening height, and multiple wind-resistant hooks F are included within the same field of view, allowing easy visual inspection of the state of the wind-resistant hooks F.

[E-2] Storage state and operating state of wind-resistant hook Figure 21 is a cross-sectional view of the widthwise end of the shutter device in the fully open and closed state, showing the state in which the longitudinal end of the slat 10 to which the wind-resistant hook F is attached is received within the guide rail, and the wind-resistant hook F has a first part (inner part) located within the guide rail and a second part (outer part) located outside the guide rail.

In Fig. 21(A), the wind-resistant hook F is in a non-operated state, and the claw portion 4 is in a stored position. The claw portion 4 is located within the thickness of the slat 10, and the hook receiver 16 has a projected dimension that does not protrude from the guide groove 35 into the slat end receiving space toward the bottom wall 32 of the guide rail 3, so that the slat 10 and the wind-resistant hook F do not interfere with the hook receiver 16 and hinder the shutter opening and closing operation when the shutter curtain 1 is raised and lowered. In Fig. 21(A), the operation plate 7 is in the first position, and by sliding the operation plate 7 from the first position to the second position, it becomes in the operating state of Fig. 21(B), and the second fitting receiver 79 of the operation plate 7 and the fitting protrusion 140 of the lock spring 14 are in a fitting state, and the operating state is locked.

In FIG. 21(B), the wind-resistant hook F is in an activated state, and the claw portion 4 is in a locked position. The front portion 40 of the claw portion 4 extends obliquely in a plan view from the longitudinal edge 103 of the slat 10 toward the bottom wall 32 and the first side wall 30, and the locking piece 42 formed in a folded shape at the tip of the front portion 40 is in close proximity to or in contact with the inner surface of the first side 160 of the hook receiver 16. The locking piece 42 is positioned rearward of the inner surface of the second side 161 of the hook receiver 16.

Figure 22 is a cross-sectional view of the widthwise end of the shutter device in the fully open and closed state, showing the state in which the lengthwise end of the slat 10 to which the wind-resistant hook F is attached is received within the guide rail, and showing the case in which the slat 10 is biased toward the bottom side of the guide rail 3.

In Fig. 22(A), the wind-resistant hook F is in an inoperative state, and the claw portion 4 is in a stored position. The claw portion 4 is located within the thickness of the slat 10, and the hook receiver 16 has a projected dimension that does not protrude from the guide groove 35 into the slat end receiving space toward the bottom wall 32 of the guide rail 3, so that the slat 10 and the wind-resistant hook F do not interfere with the hook receiver 16 and hinder the shutter opening and closing operation when the shutter curtain 1 is raised and lowered. The protruding piece 83 at the tip of the bottom surface portion 80 of the bottom plate 8 of the wind-resistant hook F abuts against the inner surface of the bottom wall 32 of the guide rail 3, and the claw portion 4 in the stored position and the inner surface of the bottom wall 32 of the guide rail 3 are separated by a predetermined distance, ensuring space for the claw portion 4 to protrude.

In FIG. 22(A), the operation plate 7 is in the first position, and when the operation plate 7 is slid from the first position to the second position from the state of FIG. 22(A), the claw portion 4 tries to slide in conjunction with the movement of the operation plate 7 in the first direction, but when the claw portion 4 protrudes a predetermined distance, the end portion of the claw portion 4 (the corner portion formed by the front portion 40 and the locking piece 42) abuts against the inner surface of the bottom wall 32 of the guide rail 3, and when the operation plate 7 continues to slide in the first direction, the claw portion 4 moves relative to the operation plate 7 so as to be pushed into the case (when the operation plate 7 moves in the first direction, the intermediate plate 5 does not move and the first coil spring 12 extends), and when the operation plate 7 moves to the second position, the second fitting receiving portion 79 of the operation plate 7 and the fitting protrusion 140 of the lock spring 14 are fitted together, and the operating state is locked.

In FIG. 22(B), the wind-resistant hook F is in an operating state (the second fitting receiving portion 79 of the operating plate 7 and the fitting protrusion 140 of the lock spring 14 are in a fitting state), but the claw portion 4 is in a stored position. The claw portion 4 is biased in a direction to rotate to the locking position. The internal state of the wind-resistant hook F is similar to that in FIG. 16.

When the offset of the slat 10 is eliminated in the state shown in Fig. 22(B), the protrusion 83 at the tip of the intermediate plate 5 moves away from the inner surface of the bottom wall 32 of the guide rail 3, and the claw portion 4 rotates to the locked position, resulting in the state shown in Fig. 22(C). The state shown in Fig. 22(C) is the same as the state shown in Fig. 21(B), in which the front portion 40 of the claw portion 4 extends obliquely in plan view from the longitudinal end edge 103 of the slat 10 toward the bottom wall 32 and the first side wall 30, and the locking piece 42 formed in a folded shape at the tip of the front portion 40 is in close proximity to or in contact with the inner surface of the first edge 160 of the hook receiver 16. The locking piece 42 is in a state of being spaced rearward of the inner surface of the second edge 161 of the hook receiver 16. In addition, in the state shown in FIG. 22(C), when the slat 10 is biased toward the bottom wall 32 of the guide rail 3, the claw portion 4 in the locked position hits the bottom wall 32 and is pushed into the case. However, when the claw portion 4 is pushed in slightly, the protrusion 83 abuts against the bottom wall 32 of the guide rail 3, restricting the pushing of the claw portion 4, so that the claw portion 4 is not pushed further into the case and the second position lock state of the operating plate 7 is not released.

23 is a diagram showing the behavior of the longitudinal end of the slat 10 and the wind-resistant hook F when wind pressure (surface pressure) acts on the shutter curtain 1 in the state of FIG. 21 (B) and the state of FIG. 22 (C). The upper figure shows the case where the wind pressure acting on the shutter curtain 1 is positive, and the shutter curtain 1 bulges toward the indoor side, so that the longitudinal end of the slat 10 assumes an inclined position in a plan view, and the claw portion 4 engages with the corners of the first side 160 and the second side 161. The surface side portion of the slat 10 abuts the front portion 33 of the first side wall 30 of the guide rail 3. The lower figure shows the case where the wind pressure acting on the shutter curtain 1 is negative, and the shutter curtain 1 bulges toward the outdoor side, so that the longitudinal end of the slat 10 assumes an inclined position in a plan view, and the claw portion 4 engages with the corners of the first side 160 and the second side 161. The back side portion of the slat 10 abuts against the front portion 34 of the second side wall 31 of the guide rail 3. Since the claw portion 4 in this embodiment is rotatable, the claw portion 4 can be engaged with the engaged portion (hook receiver 16) at an appropriate rotation angle depending on the position of the wind-resistant hook F relative to the engaged portion. This is one of the advantages over conventional fixed wind-resistant hooks. In fact, in the state shown in the lower figure, the claw portion 4 is more reliably engaged with the engaged portion in a rotated state (close to the position shown in Figure 16) compared to the state shown in the upper figure.

[E-3] Curtain opening restriction means In this embodiment, as described above, a means for visually checking the operating state or non-operating state of the wind-resistant hook F when the opening is fully closed is provided, and by displaying the state of the wind-resistant hook F, the shutter curtain 1 is not opened when the wind-resistant hook F is in the operating state (when the first display part G is displayed). However, it is possible that the shutter curtain 1 is opened by overlooking that one or more wind-resistant hooks F are in the operating state (the claw part 4 is in the locking position). In this case, the claw part 4 may hit the lower surface 232 of the upper guide 23 at the upper end of the guide rail 3 with force, and the claw part 4 or the upper guide 23 may be damaged. Even if the design of the upper guide 23 is changed, when the shutter curtain 1 is wound up by the winding body 2, the claw part 4 in the locking position may interfere with the winding, causing the winding to become disordered or generating abnormal noise.

The hook receiver 16 according to this embodiment has an L-shape in plan view or cross section, which is formed by a first side 160 extending in the view direction of the guide rail 3 and a second side 161 extending in the view direction of the guide rail 3, and a locking portion is formed from the first side 160 and the second side 161 to which the claw portion 4 in the locking position can be locked. The hook receiver 16 is fixed at a height position corresponding to the height of each wind-resistant hook F when the opening is fully closed. In this embodiment, one hook receiver 16 is provided corresponding to each wind-resistant hook F, and as shown in FIG. 1, four hook receivers 16 are provided on each side. The hook receiver 16 is a long member with a predetermined height, which is higher than the height dimension of the slat 10 in this embodiment. Note that one hook receiver 16 may be configured to correspond to multiple wind-resistant hooks positioned at intervals in the height direction.

An upper surface 162 is formed on the upper end of each hook receiver 16. When the wind-resistant hook F is in an inoperative state (claw portion 4 is in the stored position), the upper surface 162 does not impede the raising and lowering movement of the shutter curtain 1, but when the wind-resistant hook F is in an operative state, it is positioned above and spaced apart from the claw portion 4 in the locked position, forming an abutment portion against which the claw portion 4 can abut. When the shutter curtain 1 is raised while the wind-resistant hook F is in an operative state, the claw portion 4 in the locked position abuts against the upper surface 162 from below, restricting the rise of the shutter curtain 1.

Therefore, when one or more wind-resistant hooks F are in an operating state (claw portion 4 is in the locked position), if the shutter curtain 1 is mistakenly raised, the claw portion 4 in the locked position rises and abuts against the upper surface 162, restricting further upward movement of the shutter curtain 1. In terms of the accuracy of the mounting position of the hook receiver 16 corresponding to the height of the wind-resistant hook F of the shutter curtain 1 when the opening is fully closed, it is sufficient that the engaged portion (first side 160 and second side 161) of the hook receiver 16 corresponds to the height of the claw portion 4 of the wind-resistant hook F, and the height position of the abutted portion (upper surface 162) is allowed to be spaced above the claw portion 4 in the locked position of the wind-resistant hook F, so there is no need to mount the hook receiver 16 in a precise position relative to the guide rail 3, and mounting work efficiency is good. In this embodiment, the contact portion (upper surface 162) is located above and spaced from the claw portion 4 in the locked position, and after the shutter curtain 1 has risen slightly (when there is a gap between the floor surface F and the seat plate 11), it may restrict further rise. In the case of an electric shutter, the rise of the shutter curtain can be stopped by detecting the load. Alternatively, a sensor may be provided to detect the claw portion 4 in the locked position to detect the operating state of the wind-resistant hook F.

[E-4] Wind-resistant structure of shutters As shown in Fig. 2 and Fig. 24, the shutter curtain 1 is composed of four parts 1A to 1D from bottom to top in a vertical position extending in the height direction, and each part 1A to 1D includes multiple slats. When the opening is fully closed, the shutter curtain 1 is composed of an opening blocking part 1' corresponding to the total height of the building opening, and an upper part 1D located above the building opening, and the opening blocking part 1' is composed of an upper part 1C located below the upper part 1D, a lower part 1A with a seat plate 11 at its lower end, and an intermediate part 1B between the upper part 1C and the lower part 1A. At least one slat 10 of the upper part 1D of the shutter curtain 1 faces the inner lintel 21 and the outer lintel 22 extending in the width direction of the building opening above the building opening, and both ends in the width direction of the opening blocking part 1' are located inside the guide rail 3.

A wind-resistant hook F is provided at both ends in the length direction of one or more of the multiple slats 10 in the intermediate region 1B. The wind-resistant hook F is provided on the back side of the shutter curtain 1 when the opening is fully closed. In this embodiment, wind-resistant hooks F are provided at both ends in the length direction of four slats 10. The number of wind-resistant hooks F is not limited to the illustrated embodiment, and for example, two to six wind-resistant hooks F are provided at both ends in the width direction of the shutter curtain 1. In one embodiment, wind-resistant hooks F are provided at both ends in the width direction of the opening of the 15th, 18th, 22nd, and 25th slats 10 from the bottom end. In other words, multiple wind-resistant hooks F are provided every two or three slats. The intermediate region 1B is composed of the 14th to 26th slats from the bottom end. In the opening blocking area 1' of the shutter curtain 1, the slats 10 located above and below the middle area 1B do not have wind-resistant hooks, and multiple wind-resistant hooks F are concentrated in the middle area 1B of the opening blocking area 1'.

The lower portion 1A is made up of multiple slats 10 including a base plate 11, and in a manual shutter, a locking device 19 is provided on the slats 10 in the lower portion 1A. In one embodiment, the lower portion 1A is made up of the 13th slat 10 from the bottom end of the base plate, and the locking device 19 is provided on the 13th slat 10 from the bottom end. When the locking device 19 is provided at a predetermined height on the shutter curtain 1 when the opening is fully closed, all wind-resistant hooks F are provided above the locking device 19.

If the height dimension of the lower part 1A of the opening blocking part 1' of the shutter curtain 1 is H1, the height dimension of the middle part 1B is H2, and the height dimension of the upper part 1C is H3, then H1 ≧ H2. In one embodiment, even if the opening height changes, the height dimension H1 of the lower part 1A is constant. The height dimension H2 of the middle part 1B is H2 ≦ H1, and as the opening height increases, the height dimension H3 of the upper part 1C increases. Regardless of the opening height at the site, the position of the lowest slat 10 to which the wind-resistant hook F is attached is constant from the bottom end of the opening, improving the installation workability of the wind-resistant hook F and the hook receiver 16. In addition, since all the wind-resistant hooks F are located in the middle part 1B of the opening blocking part 1', the workability of switching the wind-resistant hook F between the inoperative state and the operative state is good.

The shutter curtain 1 is prepared in sections at the factory, packed in the sections, and transported to the site for assembly. In this embodiment, the slats 10 directly above the seat plate 11 to the slats 10 directly below the slats 10 with the locking device 19 are set as the first set S1, the multiple slats 10 that substantially correspond to the middle portion 1B are set as the second set S2, and the slats 10 that substantially correspond to the upper portion 1C and the upper portion 1D are set as the third set, and one or more packaging sets are prepared for each of the first set S1, the second set S2, and the third set S3. All slats 10 equipped with wind-resistant hooks F are included in the second set S2. The seat plate 11 and the slats 10 equipped with the locking device 19 are prepared separately from the packaging set. These packaging forms are merely examples, and for example, the first set S1 and the second set S2 may be packed together.

A hook receiver 16 is provided inside the guide rail 3, positioned at a height corresponding to the height position of the wind-resistant hook of the shutter curtain 1 when the opening is in the fully closed position. When the wind-resistant hook F is in an inoperative state, the claw portion 4 of the wind-resistant hook F is in the stored position and is spaced apart from the hook receiver 16, so that it does not affect the raising and lowering operation of the shutter curtain 1.

When the opening is fully closed, the operating plate 7 is slid from the first position to the second position as necessary to change the wind-resistant hook F from a non-operating state to an operating state, and the claw portion 4 is placed in an engaged position. The installation method for the wind-resistant structure according to this embodiment includes a step of lowering the shutter curtain 1 with the wind-resistant hook F in an inoperating state to fully close the building opening, and a step of sliding the operating plate 7 of the wind-resistant hook F in a first direction to place the wind-resistant hook F in an operating state when the opening is fully closed. The claw portion 4 of the wind-resistant hook F in an operating state is in an engaged position and can be engaged with the hook receiver 16 in the guide rail 3. When the opening is fully closed, by setting the wind-resistant hook F to an operating state, when surface pressure acts on the shutter curtain 1, the multiple wind-resistant hooks in the middle of the height direction are engaged with the hook receiver 16 to counter the surface pressure.

When the opening is fully closed, the shutter curtain 1 in a vertical position consists of a lower section 1A, a middle section 1B, an upper section 1C, and an upper section 1D. The lower section 1A has a seat plate 11 that is more rigid than the slats 10, and wind-resistant hooks F are provided at both widthwise ends of the multiple slats 10 in the middle section 1B. One or more slats 10 located at the upper end of the upper section 1C and/or one or more slats 10 located at the lower end of the upper section 1D face the inner lintel 21 and the outer lintel 22.

When wind pressure of a certain magnitude or greater acts on the shutter curtain 1 with the opening fully closed, multiple wind-resistant hooks F at both ends of the width of the middle section 1B of the opening blocking section 1' engage with hook receivers 16 in the left and right guide rails 3 to resist the wind pressure (Figures 23 and 25).

At the lower end of the opening when it is fully closed, both widthwise ends of the seat panel 11 at the lower end of the lower part 1A of the opening blocking part 1' abut against the guide rail 3 from the inside to resist wind pressure (Figure 26). The seat panel 11 has greater mechanical strength than the slats 10 and is less prone to deformation than the slats 10, and both lengthwise ends abut against the front parts 33 and 34 of the guide rail 3, preventing it from coming off the guide rail 3.

At the upper end of the fully closed state of the opening, one or more slats 10 located at the lower end of the upper part 1D and/or one or more slats 10 located at the upper end of the upper part 1C come into contact with the inner lintel 21 at their widthwise central portions to resist wind pressure (Fig. 27). In this embodiment, the strength of the outer lintel 22 is less than that of the inner lintel 21, but the structure W is located adjacent to the outer lintel 22, and when surface pressure acts in a direction to inflate the shutter curtain 1 toward the inside of the room, one or more slats 10 located at the lower end of the upper part 1D and/or one or more slats 10 located at the upper end of the upper part 1C come into contact with the structure W at their widthwise central portions to resist wind pressure.

In this embodiment, when a wind pressure of a predetermined magnitude or more acts on the shutter curtain 1 in the fully closed state, the wind-resistant hooks F provided at both widthwise ends of the middle part 1B of the opening blocking part 1' are engaged with the hook receivers (engaged parts) 16 in the guide rail 3, and the widthwise center part of the slat 10 located at the upper end of the opening blocking part 1' abuts against the structure (lintels 21, 22 and the building frame), and both widthwise ends of the seat plate 11 abut against the guide rail 3 from the inside to face the wind pressure. As the opening height and opening width increase, the surface pressure acting on the opening blocking part 1' also increases, but by gradually increasing the strength of the seat plate 11 and/or the lintels 21, 22 as the opening height and opening width increase, it is possible to counter the surface pressure without increasing the number of wind-resistant hooks F.

[Appendix 1]
A shutter curtain made of multiple slats connected in the height direction;
Left and right guide rails located at both ends of the building opening in the width direction and extending to the full height of the building opening;
A wind-resistant hook is provided at both ends of a portion of the slats of the shutter curtain in the longitudinal direction;
Equipped with
The wind-resistant hook is a movable wind-resistant hook having a claw portion that is movable between a locking position and a storage position,
A locking portion is provided in the guide rail at a height position corresponding to the height of the wind-resistant hook.
shutter.

In one embodiment, an abutment portion is provided in the guide rail and located above the locked portion,
When the claw portion is in the locking position, the abutment portion is located above the claw portion.
In one embodiment, the contacted portion is integrally formed with the locked portion.
In one embodiment, a hook receiver having the engaged portion and the abutted portion is provided within the guide rail.
In one aspect, when the opening is fully closed, the claw portion in the engaging position engages with the engaged portion, thereby providing a wind-resistant structure that prevents the slat end from slipping out of the guide rail.
A method for installing a wind-resistant structure using shutters, comprising the steps of:
We provide shutter curtains with wind-resistant hooks on both longitudinal ends of the slats.
The guide rails located at both ends of the width direction of the building opening are provided with hooks at height positions corresponding to the height positions of the wind-resistant hooks,
The wind-resistant hook is a movable wind-resistant hook that can be in an operating state in which the claw portion is in a locking position and in a non-operating state in which the claw portion is in a storage position,
The wind-resistant hook is deactivated, and the shutter curtain is used to close the building opening.
When the opening is in a fully closed state, the wind-resistant hook is changed from a non-operated state to an activated state, and the claw portion is brought into an engaging position so that the claw portion can be engaged with the engaged portion.
How to install a wind-resistant structure using shutters.

[Appendix 2]
A shutter curtain is made up of multiple slats connected in the height direction and equipped with a seat plate at the lower end;
Left and right guide rails located at both ends of the building opening in the width direction and extending to the full height of the building opening;
In a shutter equipped with
The shutter curtain includes an opening blocking portion corresponding to the total height of the building opening when the opening is fully closed, and an upper portion located above the building opening,
At least one slat in the upper portion and/or at least one slat in the upper end portion of the opening closing portion faces a structure extending in the width direction of the building opening above the building opening,
Both widthwise ends of the opening blocking portion are located within the guide rail,
A wind-resistant hook is provided at each end in the length direction of one or more slats located in the middle of the height direction of the opening blocking portion,
A locking portion is provided in the guide rail at a height position corresponding to the height of the wind-resistant hook,
When a wind pressure of a predetermined magnitude or more acts on the shutter curtain with the opening fully closed, the central portion of the width direction of the at least one slat abuts against the structure, both ends of the width direction of the seat plate abut against the guide rails from the inside, and the one or more wind-resistant hooks are engaged with the engaged portions.
Wind-resistant structure of the shutter.

In one embodiment, the opening blocking portion includes an upper portion including a plurality of slats, a lower portion including a plurality of slats and a lower end seat plate, and an intermediate portion between the upper portion and the lower portion.
The intermediate portion is made up of a plurality of slats, and one or more of the plurality of slats are provided with wind-resistant hooks at both ends in the longitudinal direction.
In one embodiment, the height dimension of the lower section is equal to or greater than the height dimension of the intermediate section.
In one embodiment, the plurality of wind-resistant hooks are provided for every third or every third slat.
In one embodiment, the plurality of wind-resistant hooks are provided at two to six ends of each of the shutter curtain in the width direction.
In one embodiment, the structure is a lintel.
In one embodiment, the structure is a wall or a building frame.
In one embodiment, the wind-resistant hook is a movable wind-resistant hook having a claw portion that is movable between an engaging position and a storage position.
In one embodiment, a locking device is provided, and the wind-resistant hook is provided on the upper side of the locking device.
A method for installing a wind-resistant structure using shutters, comprising the steps of:
We provide shutter curtains with wind-resistant hooks on both longitudinal ends of the slats.
The shutter curtain includes an opening blocking portion corresponding to the total height of the building opening when the opening is fully closed, and an upper portion located above the building opening,
The opening blocking portion is composed of an upper portion, a lower portion having a seat plate, and an intermediate portion between the upper portion and the lower portion, and one or more slats in the intermediate portion are provided with wind-resistant hooks at both ends in the longitudinal direction thereof,
The guide rails located at both ends of the width direction of the building opening are provided with hooks at height positions corresponding to the height positions of the wind-resistant hooks,
The wind-resistant hook is a movable wind-resistant hook that can be in an operating state in which the claw portion is in a locking position and in a non-operating state in which the claw portion is in a storage position,
The wind-resistant hook is deactivated, and the shutter curtain is used to close the building opening.
When the opening is fully closed, both ends in the longitudinal direction of the seat plate are positioned within the guide rails, and the lower end of the upper portion and/or the upper end of the upper portion face a structure positioned above the building opening,
When the opening is in a fully closed state, the wind-resistant hook is changed from a non-operated state to an activated state, and the claw portion is brought into an engaging position so that the claw portion can be engaged with the engaged portion.
How to install a wind-resistant structure using shutters.

[Appendix 3]
an operation unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
Equipped with
When the operation portion is in the first position, the claw portion is in a stored posture,
In association with the operation portion moving from the first position to the second position, the claw portion changes from a storage position to a locking position.
A wind-resistant hook,
When the claw is in the storage position, the wind-resistant hook is in an inoperative state, and when the claw is in the locking position, the wind-resistant hook is in an operative state;
A locking means is provided to hold the wind-resistant hook in an operational state.
Movable wind-resistant hook.

In one embodiment, the locking means is a retaining means for retaining the operating portion in the second position.
In one embodiment, the wind-resistant hook includes a case, and the case has a portion facing a side edge of the operating portion,
a fitting protrusion is provided on one of a side edge of the operation portion and the portion of the case, and a fitting receiving portion is provided on the other of the side edge and the portion of the case;
When the operation portion is in the second position, the fitting protrusion is in a fitted state with the fitting receiving portion,
The fitted state can be released by sliding the operation portion with a predetermined force.
In one embodiment, when the fitting protrusion and the fitting receiving portion are in a fitted state (the wind-resistant hook is in an activated state), the claw portion in the locking position is biased by a spring material in a direction to maintain the locking position,
When the wind-resistant hook is in an activated state, the force acting to move the claw portion, which is in the engaging position, to the stored position is absorbed by the spring material, thereby maintaining the engagement state between the engagement protrusion and the engagement receiving portion.
In one aspect, an intermediate member is connected to the operation unit via a spring member and slides in conjunction with the sliding movement of the operation unit,
The claw portion is movable between a storage position and a locking position in conjunction with the sliding movement of the intermediate member,
When the wind-resistant hook is in an activated state, the force acting to move the claw portion, which is in the engaging position, to the stored position is absorbed by the spring material, thereby maintaining the engagement state between the engagement protrusion and the engagement receiving portion.

In one embodiment, the locking means for maintaining the operative state of the wind-resistant hook is a first locking means,
Further, a second locking means is provided for maintaining the wind-resistant hook in an inoperative state.
In one embodiment, the second locking means is a retaining means for retaining the operating portion in the first position.
In one embodiment, the wind-resistant hook includes a case, and the case has a portion facing a side edge of the operating portion,
a fitting protrusion is provided on one of a side edge of the operation portion and the portion of the case, and a first fitting receiving portion and a second fitting receiving portion are provided on the other of the side edge and the portion of the case;
When the operation portion is in a first position, the fitting protrusion is in a fitted state with the first fitting receiving portion,
When the operation portion is in the second position, the fitting protrusion is in a fitted state with the second fitting receiving portion,
The fitted state can be released by sliding the operation portion with a predetermined force.
Equipped with the above movable wind-resistant hook,
The guide rails located at both ends of the width direction of the building opening are provided with hooks at height positions corresponding to the height positions of the wind-resistant hooks,
A shutter having a wind-resistant structure that prevents the slat ends from slipping out of the guide rails by engaging the claw portions in an engaging position with the engaged portions when the opening is fully closed.

[Appendix 4]
an operation unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
Equipped with
When the operation portion is in the first position, the claw portion is in a stored posture,
In association with the operation portion moving from the first position to the second position, the claw portion changes from a storage position to a locking position.
A wind-resistant hook,
When the claw portion is in the storage position, the wind-resistant hook is in an inoperative state, and when the claw portion is in the locking position, the wind-resistant hook is in an operative state.
Equipped with a visual confirmation means for determining whether the wind-resistant hook is in operation or not,
Movable wind-resistant hook.

In one embodiment, the wind-resistant hook comprises a case,
the operation unit or an element that slides in conjunction with the sliding movement of the operation unit includes a portion that faces an inner surface of a face portion of the case,
In the above-mentioned portion, a first display portion showing a non-operated state and a second display portion showing an operated state are arranged side by side in a sliding movement direction,
A visual inspection opening is formed on the surface of the case,
When the operating unit is in the first position, the first display unit is positioned in the visual confirmation opening and exposed, and when the operating unit is in the second position, the second display unit is positioned in the visual confirmation opening and exposed.
In one embodiment, the first display portion and the second display portion are distinguished by color.
In one embodiment, the first display portion and the second display portion are identified by letters and/or symbols.
In one aspect, the wind-resistant hook has a portion located within the guide rail and a portion located outside the guide rail, and the visual inspection opening is formed in the portion located outside the guide rail.
In one embodiment, the wind-resistant hook is located and attached to the back surface of the shutter curtain, so that the state of the wind-resistant hook can be visually observed from inside the house.
In one aspect, multiple wind-resistant hooks are provided at both longitudinal ends of the slats in a limited area in the middle of the height direction of the opening occluding portion of the shutter curtain when the opening is fully closed, making visual inspection easier than when wind-resistant hooks are provided across the entire height.
Equipped with the above movable wind-resistant hook,
A locking portion is provided in the guide rail at a height position corresponding to the height of the wind-resistant hook,
A shutter having a wind-resistant structure that prevents the slat ends from slipping out of the guide rails by engaging the claw portions in an engaging position with the engaged portions when the opening is fully closed.

[Appendix 5]
The wind-resistant hook provided at the longitudinal end of the slat has a claw portion movable between a storage position and a locking position,
The engaging portion at the tip of the claw in the engaging position can be engaged with the engaged portion provided inside the guide rail.
When the claw portion is in the storage position, the claw portion is in a first position in which the engagement portion is located at the same level as or inside the slat edge,
When the claw portion is in the locking position, the claw portion is in a second position in which the locking portion protrudes outward from the slat edge,
A protrusion is provided at each end of the slat in the longitudinal direction so as to protrude beyond the slat edge.
When the claw portion is in the first position, the tip of the protrusion is located closer to the bottom of the guide rail than the locking portion.
Movable wind-resistant hook.

In one aspect, when the slat is biased toward the bottom of the guide rail, the claw portion in the stored position is kept spaced apart from the bottom of the guide rail, ensuring space for the claw portion to protrude.
In one embodiment, the wind-resistant hook comprises a case and the protrusion is part of the case.
In one aspect, when the claw portion is in the second position, at least a portion of the engaging portion is located approximately at the same position as the tip of the convex portion or closer to the bottom of the guide rail than the tip of the convex portion.
In one embodiment, the tip of the protrusion is curved.
In one aspect,
an operation unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
Equipped with
In association with the movement of the operation portion from the first position to the second position, the claw portion changes from a storage position to a locking position,
When the operation unit moves to the second position, the second position is maintained,
When the slat is biased toward the bottom of the guide rail, the protrusion abuts against the bottom of the guide rail, thereby securing a space for the claw portion to protrude toward the bottom, thereby allowing the operation portion to move to the second position,
When the operation unit moves to the second position with the claw portion in contact with the bottom portion, the claw portion is biased in a direction to assume a locking posture,
When the offset is eliminated and the protrusion is separated from the bottom, the claw portion is brought into the locking position by the biasing force.

[Appendix 6]
an operation unit that is slidable between a first position and a second position;
an intermediate member that is connected to the operation unit via a first spring member and slides in conjunction with the sliding movement of the operation unit;
A pressing member is connected to the intermediate member via a second spring member and slides in conjunction with the sliding movement of the intermediate member.
a claw portion movable between a storage position and a locking position in association with the sliding movement of the operation portion;
Equipped with
a base end portion of the claw portion is loosely fitted into a tip end portion of the intermediate member, and the claw portion moves from a storage position to a locking position in conjunction with the sliding movement of the operation portion from the first position to the second position,
The tip of the compression member abuts against the base end portion of the claw portion and presses the base end portion toward the tip side.
Movable wind-resistant hook.

In one aspect, when the operating portion is in the first position, the biasing force of the first spring material is equal to or greater than the biasing force of the second spring material (the same as or greater than the biasing force of the second spring material), and when the operating portion slides from the first position to the second position, the operating portion, the intermediate member, and the compression member slide integrally toward the tip side. In one aspect, the base end side portion of the claw portion includes a first portion (hanging piece 43), a second portion (rising piece 44), and a third portion (base end side portion 41' of the rear portion),
a first portion and/or a third portion of a base end portion of the claw portion is engaged with a tip end portion of the intermediate member, and the claw portion moves from a storage position to a locking position in conjunction with the sliding movement of the operation portion from the first position to the second position,
The tip of the compression member abuts against a second portion of the base end side portion of the claw portion and presses the second portion toward the tip side.
In one aspect, the tip side portion of the intermediate member includes a first rising piece on a side closer to the tip and a second rising piece on a side farther from the tip, and a recessed groove is formed by the first rising piece and the second rising piece,
a first portion of a base end side portion of the claw portion is received in the recessed groove with play;
When the operating portion is in the first position, the first portion and/or the third portion of the base end side portion of the claw portion is engaged with the first rising piece.
In one aspect, when the operation portion is in the first position, a base end portion of the claw portion is in an inclined position in which a second portion is located closer to a tip end side than the first portion,
When the operating portion is in the second position, the base end portion of the claw portion has a vertical position in which the first and second portions are aligned with the second rising piece, and the third portion is in a horizontal position.

In one aspect, when the operation portion is in the first position, an abutment portion is provided on a tip side of the second portion of the base end side portion of the claw portion and spaced apart from the tip side,
When the operating portion moves from the first position to the second position, the operating portion, the intermediate member, and the pressing member slide integrally toward the tip side until the second portion abuts against the abutted portion, and the claw portion slides toward the tip side,
With the second portion in contact with the abutted portion, the operating portion and the intermediate member slide toward the tip while stretching the second spring material, causing the first portion and/or the third portion of the claw portion to be pressed against the tip side portion (the first raised piece and/or the second raised piece), causing the claw portion to rotate around the abutted portion as a fulcrum and assume a locking position.
In one aspect, a method for manufacturing a portable electronic device includes the steps of:
An opening is formed on a tip side of the face portion of the case, the opening having a first edge portion on a side farther from the tip and a second edge portion on a side closer to the tip,
a second portion of the base end portion of the claw portion is located within the opening,
When the operating portion is in the first position, a second portion of the base end portion is located on the first edge portion side, and the second edge portion serves as the abutment portion.
In one aspect, the surface of the operating part faces a rear portion of the surface of the intermediate member, a first spring material is positioned in the space between the surface of the operating part and the rear portion of the surface of the intermediate member, and an opening or a groove that receives a portion of the first spring material is formed in one or both of the surface of the operating part and the rear portion of the surface of the intermediate member.
In one aspect, the surface of the compression member faces a front portion of the surface of the intermediate member, a second spring material is positioned in the space between the surface of the compression member and the front portion of the surface of the intermediate member, and an opening or groove for receiving a portion of the second spring material is formed in one or both of the surface of the compression member and the front portion of the surface of the intermediate member.

[Appendix 7]
an operation unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
a claw actuating mechanism that moves the claw from a storage position to a locking position in conjunction with the operation portion moving from the first position to the second position;
Equipped with
The claw actuating mechanism includes a first actuating mechanism that slides the claw in the storage position toward the tip side, and a second actuating mechanism that rotates the claw that has slid toward the tip side to the locking position.
Movable wind-resistant hook.

In one embodiment, a base end portion of the claw portion is loosely fitted into a tip end portion of the operation portion,
When the operation portion is in the first position, an abutment portion is provided on a tip side of a base end portion of the claw portion at a distance therefrom,
When the operation unit moves from the first position to the second position, the first actuation mechanism operates until the base end portion abuts against the abutted portion, and the tip end portion slides toward the tip side, so that the claw portion is pushed by the tip end portion and slides toward the tip side,
The second operating mechanism is activated after the base end portion abuts the abutted portion when the operating portion moves from the first position to the second position, and when the base end portion abuts the abutted portion, the tip end portion slides toward the tip side while the base end portion is in contact with the abutted portion, causing the base end portion of the claw portion to be pushed by the tip end portion, and the claw portion rotates around the abutted portion as a fulcrum to assume a locking position.
In one aspect, the tip side portion includes a first raised piece on a side closer to the tip and a second raised piece on a side farther from the tip, and a recessed groove is formed by the first raised piece and the second raised piece,
The proximal end portion of the claw portion includes a first portion, a second portion, and a third portion,
a first portion of a base end portion of the claw portion is received in the groove with play;
When the operating portion is in the first position, a first portion and/or a third portion of a base end portion of the claw portion is engaged with the first rising piece,
When the operation portion is in the first position, the abutment portion is provided on a tip side of a second portion of a base end portion of the claw portion and spaced apart from the tip side,
The first actuation mechanism slides the second portion until the second portion abuts against the abutted portion,
The second operating mechanism is activated after the second part comes into contact with the abutted portion, and with the second part in contact with the abutted portion, the tip portion slides toward the tip side, causing the first part and/or the third part of the claw portion to be pushed by the tip portion (the first raised piece and/or the second raised piece), and the claw portion rotates around the abutted portion as a fulcrum to assume an engaging position.
In one aspect, a method for manufacturing a portable electronic device includes the steps of:
An opening is formed on a tip side of the face portion of the case, the opening having a first edge portion on a side farther from the tip and a second edge portion on a side closer to the tip,
a second portion of the base end portion of the claw portion is located within the opening,
When the operating portion is in the first position, a second portion of the base end portion is located on the first edge portion side, and the second edge portion serves as the abutment portion.
In one aspect, when the operation unit is in the first position, a base end portion of the claw portion is in an inclined position in which the second portion is located closer to a tip end than the first portion,
When the first actuation mechanism is actuated, the claw portion slides toward the tip side while maintaining the inclined posture of the base end portion,
When the second operating mechanism is actuated, the base end side portion of the claw portion, which is in the inclined position, is in a vertical position in which the first portion and the second portion are aligned along the second rising piece.
In one embodiment, an intermediate member is provided that slides in conjunction with the sliding movement of the operation unit,
The tip side portion is a tip side portion of the intermediate member.
In one embodiment, a pressing member is provided that slides in conjunction with the sliding movement of the intermediate member,
The tip of the compression member abuts against a second portion of the base end side portion of the claw portion.
In one aspect, an intermediate member is connected to the operation unit via a first spring member and slides in conjunction with the sliding movement of the operation unit;
A pressing member is connected to the intermediate member via a second spring member and slides in conjunction with the sliding movement of the intermediate member.
When the first operating mechanism is initially actuated, the biasing force of the first spring material is equal to or greater than the biasing force of the second spring material (the biasing force of the first spring material is equal to or greater than the biasing force of the second spring material), and when the first operating mechanism is actuated, the operation portion, the intermediate member, and the compression member slide integrally toward the tip side,
When the second actuation mechanism is actuated, the operating portion and the intermediate member slide integrally toward the tip side, and the second spring material expands, thereby increasing the biasing force of the second spring.

1 Shutter curtain 1' Opening blocking portion 1A Lower portion 1B Middle portion 1C Upper portion 1D Upper portion 10 Slat 103 Lengthwise end edge of slat (slat end edge)
11 Seat plate 21 Inner lintel 22 Outer lintel 3 Guide rail 31 First side wall 32 Second side wall 32 Bottom wall (bottom)
4 Claw portion 40 Front portion 41 Rear portion 41' Base end portion of rear portion (base end portion of claw portion, third portion)
42 Locking piece (locking portion)
43 Hanging piece (base end side portion of claw portion, first portion)
44 Rising piece (base end side portion of claw portion, second portion)
5 Intermediate plate (intermediate member)
50: Face portion 51: Wide portion (tip side portion)
52 Rising piece (first rising piece, tip side portion)
53 Rising piece (second rising piece, tip side portion)
58 Groove (tip side portion)
6 Compression plate (compression member)
60: Surface portion 61: Contact portion 7: Operation plate (operation portion)
70 Surface portion 78 First fitting receiving portion (locking means, holding means)
79 Second fitting receiving portion (locking means, holding means)
8 Bottom plate (case)
83 Projection (protrusion)
9 Cover plate (case)
90 Upper surface portion 94 Opening 940 First edge portion 941 Second edge portion (contact portion)
95 Opening (visual inspection opening, visual inspection means)
12 First coil spring (first spring material)
13 Second coil spring (second spring material)
14 Lock spring (locking means, holding means)
15 Mounting plate 16 Hook receiver 160 First side (engaged portion)
161 Second side (engaged portion)
162 Upper surface (contact portion)
F Wind-resistant hook W Body G First display part R Second display part

Claims (5)

A shutter curtain made of multiple slats connected in the height direction;
Left and right guide rails located at both ends of the building opening in the width direction and extending to the full height of the building opening;
A wind-resistant hook is provided at both ends of a portion of the slats of the shutter curtain in the longitudinal direction;
a locking device provided on a slat at a predetermined height of the shutter curtain and configured to restrict upward movement of the shutter curtain when the opening is in a fully closed position;
Equipped with
The wind-resistant hook is a movable wind-resistant hook having a claw portion that is movable between a locking position and a storage position,
A locking portion is provided in the guide rail at a height position corresponding to the height of the wind-resistant hook,
An abutment portion is provided in the guide rail and located above the engagement portion,
When the claw portion is in the locking position, the abutment portion is located above the claw portion.
shutter. When the claw portion is in the locking position, the abutment portion is located above the claw portion and spaced apart from the claw portion,
When the shutter curtain is raised while the locking device is in the unlocked state and the wind-resistant hook is in the activated state, the claw portion in the locked position abuts against the abutment portion, thereby restricting further raising of the shutter curtain.
The shutter of claim 1 . The abutment portion is integrally formed with the engagement portion.
The shutter according to claim 1 or 2. A shutter according to any one of claims 1 to 3, which has a wind-resistant structure that prevents the slat end from slipping out of the guide rail by engaging the claw portion in the engaging position with the engaged portion when the opening is fully closed. A method for installing a wind-resistant structure using shutters, comprising the steps of:
We provide shutter curtains with wind-resistant hooks on both longitudinal ends of the slats.
A locking portion is provided in the guide rails located at both ends of the width direction of the building opening, corresponding to the height position of the wind-resistant hook , and an abutment portion is provided in the guide rail above the locking portion,
The wind-resistant hook is a movable wind-resistant hook that can be in an operating state in which the claw portion is in a locking position and in a non-operating state in which the claw portion is in a storage position,
The wind-resistant hook is deactivated, and the shutter curtain is used to close the building opening.
When the opening is in a fully closed state, the wind-resistant hook is changed from a non-operated state to an operated state, and the claw portion is brought into an engaging position so that the claw portion can be engaged with the engaged portion,
When the claw portion is in the locking position, the abutment portion is located above the claw portion at a distance, and when the shutter curtain is raised while the locking device is in the unlocked state and the wind-resistant hook is in the operating state, the claw portion in the locking position abuts against the abutment portion, thereby restricting further raising of the shutter curtain.
How to install a wind-resistant structure using shutters.

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