JP4432176B2 - Blind device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blind device that is arranged on a window or the like of a building and blinds these windows or the like as necessary.
[0002]
[Problems to be solved by the invention]
In this type of blind device, a blind composed of a large number of slats juxtaposed in the vertical direction is usually arranged at the top, and the blind is lowered from above by the operation of the lifting device, thereby concealing the openings such as the windows of the building. The blind is raised by the reverse operation of the lifting device to open the opening.
[0003]
In such a blind device, when the opening portion is opened, a large number of slats constituting the blind are usually arranged in a closely-polymerized manner above the opening portion. As a result, the opening is partially closed, and when the opening is fully opened, a sufficient feeling of release cannot be experienced, which is annoying. In order to eliminate this, even if the slat accommodation frame is provided on the upper side, an occupied space corresponding to the slat accommodation frame is required on the upper side, which may be difficult in a general house or the like and is not always satisfactory. Further, in the conventional blind device, cleaning of the slats must be performed using a ladder, a stand or the like, and there is a risk that an object or a person may be caught by the descending of the blind in the closing operation.
[0004]
In addition, in general, the blind device is provided with a tilting mechanism (tilt mechanism) that tilts the slat immediately before the opening is fully closed in addition to the lifting device. In order to tilt the slat by pulling down or pushing down the lower part, it is necessary to use an endless chain or no-back chain, etc., and the tilting mechanism and the lifting device become complicated and expensive, and it causes failure and so on. There is a possibility that it occupies a large space and cannot be made compact around the opening.
[0005]
The present invention has been made in view of the above-mentioned points, and the object of the present invention is to eliminate an annoying polymerized slat when the opening is fully opened and to provide an original feeling of release. Another object of the present invention is to provide a blind device that has a simple structure, is excellent in safety, can reduce failure, and can be used as a compact tilting mechanism.
[0006]
[Means for Solving the Problems]
The blind device according to the first aspect of the present invention supports a blind composed of a large number of slats juxtaposed in a vertical direction between a pair of vertical frames, and respective ends of the slats, and is arranged in the vertical frame. A flexible link mechanism, a link lifting mechanism that lifts the upper end of the link mechanism whose lower end is connected to the vertical frame and places the blind in the opening closed position, and a link at a given opening closed position of the blind. A tilt mechanism that tilts each of the slats via the mechanism. In such a blind device, the link mechanism includes a first link row and a second link arranged in parallel with the first link row. A link row and a third link row having one end connected to the first link row and the other end connected to the second link row, each end of the slat being a third link Tilt machine connected to the row A pivotable tilt arm having one end pivotally connected to the upper end of the first link row and the other end pivotally connected to the upper end of the second link row, and the rotation of the tilt arm. The link lifting mechanism lifts the upper end of the link mechanism via the tilt arm, and the cam mechanism is a cam attached to an intermediate portion of the tilt arm. And a guide surface that is provided on inner walls facing each other of the pair of vertical frames and guides the movement of the cam when lifting the upper end of the link mechanism.
[0007]
According to the blind device of the first aspect, the blind lifting mechanism is lifted by the link lifting mechanism so that the opening is completely blinded, so that it is unobtrusive when the opening is fully opened. The polymerized slats can be eliminated, and the original feeling of release can be enjoyed. Also, it has a simple structure, excellent safety, less failure, etc., and the cam mechanism guide surface is a pair of vertical frames. Since they are provided on the inner walls facing each other, a compact tilt mechanism can be obtained.
[0008]
In the blind device according to the second aspect of the present invention, in the blind device according to the first aspect, the cam includes a roller rotatably attached to an intermediate portion of the tilt arm.
[0009]
According to the blind device of the second aspect, since the cam is a roller, the tilting operation can be performed smoothly.
[0010]
In the blind device of the third aspect of the present invention, in the blind device of the first or second aspect, the guide surface is continuous with the linear guide surface extending in the vertical direction, and the linear guide surface. And a crossing guide surface extending in a crossing direction with respect to the extending direction of the surface.
[0011]
According to the blind device of the third aspect, since the guide surface includes the linear guide surface and the intersecting guide surface that are continuous with each other, the tilting operation can be performed continuously and smoothly.
[0012]
In the blind device according to the fourth aspect of the present invention, in the blind device according to the third aspect, the end portion of the uppermost slat is supported by the tilt arm via the fixture, and the others except for the uppermost slat. Each end of each slat is supported by a link mechanism via a respective fixture, and each fixture passes through the mutually facing inner walls of the pair of vertical frames, and the upper and lower sides of each fixture are A straight slit extending in the vertical direction is formed to allow movement, the straight guide surface defines a straight slit, the cross guide surface is continuous with the straight slit, and the direction in which the straight slit extends And intersecting slits extending in a crossing direction.
[0013]
According to the blind device of the fourth aspect, since the straight guide surface defines the straight slit through which each fixture passes, there is no need to provide a separate protrusion or slit for the straight guide surface. Thus, a simpler structure and a compact tilt mechanism can be obtained.
[0014]
In a preferred example, the link lifting mechanism includes a rotating body, a flexible long body that is engaged with the rotating body, and a feeding end is connected to the upper end of the link mechanism via a tilt mechanism, and the rotating body is rotated. And an automatic or manual rotation driving device. A belt, a wire rope, a chain, a string, etc. can be shown as a preferable example as a flexible long body, and a belt, a wire rope, or a string is used as a flexible long body as a rotating body. In some cases, pulleys that are wound and engaged are preferably used, and when a chain is used as the elongated body, a sprocket wheel that engages and engages with the chain is preferably used.
[0015]
If the lower end of the link mechanism, that is, the lower end of the first link row in the above example is connected to the vertical frame via the elastic mechanism so as to be movable under elastic bias, for a while after the link mechanism is extended to the maximum Even if the link lifting mechanism is in operation, an excessive force that damages the first link row is not applied to the lower end of the first link row. There is no need to do it.
[0016]
Next, the present invention and its embodiments will be described in more detail with reference to preferred examples shown in the drawings. The present invention is not limited to these examples.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4, the blind device 1 of the present example includes a blind 5 composed of a large number of slats 4 juxtaposed in a vertical direction between a pair of vertical frames 2 and 3, and respective end portions 6 of the slats 4. Stretchable link mechanisms 7 and 8 disposed on the vertical frames 2 and 3 and upper ends of the link mechanisms 7 and 8 whose lower ends are connected to the vertical frames 2 and 3 via elastic mechanisms 9 and 10. , And a tilt mechanism 12 that tilts each of the slats 4 via the link mechanisms 7 and 8 at a given opening closed position of the blind 5. And 13.
[0018]
Since the vertical frame 2, the vertical frame 3, the link mechanism 7, the link mechanism 8, the elastic mechanism 9, the elastic mechanism 10, and the tilt mechanisms 12 and 13 are configured in the same manner, the vertical frame 2 and the vertical frame 3, respectively. The frame 2 side will be described, and the vertical frame 3 will be described as necessary.
[0019]
The vertical frames 2 and 3 are bridged by an upper frame 15 to form an opening 16 that is opened and closed by a blind 5. The vertical frame 2 includes a vertical frame main body 18 that has a linear slit 17 that extends in the vertical direction so as to allow the vertical movement of the fixture 33 while allowing the fixture 33 to be described later to pass therethrough, and that houses the link mechanism 7 therein. And a pair of guide walls 20 formed integrally with the vertical frame body 18 with a roller guide path 19 formed therein. A straight slit 17 is formed in the inner wall 21 of the vertical frame body 18, and the inner wall 21 faces the inner wall 14 of the vertical frame 3.
[0020]
Each of the slats 4 includes a large hook-shaped portion 22 exposed to the outside when the opening 16 is closed, and a small hook-shaped portion 23 that is superposed on the underline side of the large hook-shaped portion 22 when the opening 16 is closed. The seal 24 is fitted to one end of the large bowl-shaped portion 22.
[0021]
The link mechanism 7 includes a first link row 27 in which a large number of link members 25 are connected to each other in series via shaft pins 26 and a plurality of link members 28 in the same manner as the link rows 27. The second link row 30 is connected to the link row 27 in parallel with each other through the link row 27, and the other end is connected to the link row 27 via every other shaft pin 26. And a third link row 32 composed of a number of lateral link members 31 rotatably connected to the link row 30 via every other shaft pin 29, and the slats excluding the uppermost slat 4 Each end 6 of 4 is fixedly connected to the link member 31 of the link row 32 by a fixture 33 that passes through the linear slit 17. In addition, in order to define the folding direction of the link rows 27 and 30, the blocking members 34 are integrally provided on the link members 25 and 28.
[0022]
In this example, the lower end 41 of the lowermost link member 28, which is the lower end of the link row 30, is a free end, and the lower end 42 of the lowermost link member 25, which is the lower end of the link row 27, moves the elastic mechanism 9. It is connected to the vertical frame 2 via.
[0023]
The elastic mechanism 9 includes a bracket 51 fixed to the lower end of the vertical frame 2, a guide rod 52 attached to the bracket 51, a movable body 53 attached to the guide rod 52 so as to be movable in the vertical direction, and a movable body 53. Is provided between the upper end of the bracket 51 and the upper surface of the movable body 53 so as to elastically bias the lower end of the link member 25. 42 is rotatably connected to the movable body 53 via the shaft pin 55, and thus the lower end 42 of the link member 25 is connected to the vertical frame 2 via the elastic mechanism 9.
[0024]
The link lifting mechanism 11 is fixed to the upper ends of the vertical frames 2 and 3, and is wound around pulleys 63 and 64 as rotating bodies arranged on brackets 61 and 62 covered by the upper frame 15, and the pulleys 63 and 64. And the metallic belts 69 and 70 as flexible long bodies attached to the shafts 67 and 68 with the feeding ends 65 and 66 wound around the shafts 67 and 68, and rotatably attached to the shafts 67 and 68. The movable platforms 75 and 76, the roller guide path 19 (the vertical frame 3 side is not shown), rollers 71 to 74 rotatably supported by the movable platforms 75 and 76, and pulleys 63 and 64 are provided. And a rotation driving device 77 for rotating the motor. The rotation drive device 77 has an endlessly rotatable end portion of the electric motor 78 with a speed reducer attached to the bracket 61, a gear 80 attached to the output rotation shaft 79 of the speed reducer of the electric motor 78, and the brackets 61 and 62. To support the rotation of the rotating shaft 81 disposed between the upper ends of the vertical frames 2 and 3, the gear 82 fixed to the rotating shaft 81 and meshed with the gear 80, and the belts 68 and 69, respectively. A turning roller 83 (one not shown) is rotatably mounted on each of the brackets 61 and 62, and pulleys 63 and 64 are fixed to the rotating shaft 81.
[0025]
The tilt mechanism 12 has one end at one end of the uppermost link member 25, which is the upper end of the first link row 27, via the shaft pin 26, and the other end at the upper end of the second link row 30. A pivotable tilt arm 91 that is pivotably connected to one end of a link member 28 via a shaft pin 29, and a cam mechanism 92 that sets the pivoting state of the tilt arm 91 are provided. The shaft 67, which is wound and connected to the feeding end 65 of the belt 69, is fixed to the tilt arm 91, and thus the feeding end 65 of the belt 69 is connected to the link mechanism 7 via the shaft 67 and the tilt arm 91. As a result, the link lifting mechanism 11 lifts the upper end of the link mechanism 7 via the tilt arm 91. The end 6 of the uppermost slat 4 is fixedly connected to the tilt arm 91 by a fixture 33 that passes through the linear slit 17, and the fixture 33 for the uppermost slat 4 is tilted. It is fixed to the other surface of the tilt arm 91 so as to be concentric with the shaft 67 fixed to one surface of the arm 91.
[0026]
The cam mechanism 92 is provided on the inner wall 21 and a roller 95 as a cam that is rotatably attached to an intermediate portion of the tilt arm 91 above the attachment position of the fixture 33, and is a link mechanism by the link lifting mechanism 11. 7 and a guide surface 96 that guides the movement of the roller 95 when the upper end of the roller 7 is lifted.
[0027]
The guide surface 96 is continuous with the linear guide surface 97 extending in the vertical direction and the linear guide surface 97, and intersects the direction in which the linear guide surface 97 extends, in this example, the intersecting guide surface 98 extending orthogonally. The linear guide surface 97 defines a linear slit 17 extending vertically so as to allow the fixture 33 to pass therethrough and allow the fixture 33 to move up and down. Is continuous with the straight slit 17 and defines an intersecting slit 99 that intersects with the direction in which the straight slit 17 extends, and in this example, extends perpendicularly. The intersection slit 99 is formed on the inner wall 21 in the same manner as the straight slit 17.
[0028]
In the above blind device 1, when the opening 16 is opened, the link rows 27 and 30 are folded, and each of the slats 4 is closely polymerized (bundled) below the opening 16. When closing the opening 16, first, the electric motor 78 is operated and the output rotating shaft 79 is rotated to rotate the pulley 63 via the gears 80 and 82 and the rotating shaft 81, whereby the belt 69 is moved to the pulley 63. As a result, the tilt arm 91 is lifted while being guided by the roller guide path 19 via the movable base 75 and the rollers 71 and 72, and as the tilt arm 91 is lifted, as shown in FIG. 30 is also extended from the upper end side, and as a result, the horizontal link member 31 of the link row 32 is also lifted upward from the upper side. As a result, each of the slats 4 fixed to the tilt arm 91 and the horizontal link member 31 is The opening 16 is lifted in the closing direction. As shown in FIG. 3, when the cam roller 95 is guided in contact with the linear guide surface 97, the tilt arm 91, the link row 27, 30 and 32 are arranged.
[0029]
Further, when the link trains 27 and 30 are extended by the belt 69 being caught in the pulley 63 and the link train 27 is extended at the opening closing position of the blind 5, in this example, the position immediately before the opening 16 is completely closed, the link train 27 is extended. 27 is elastically biased downward by the coil spring 54 and causes the tilt arm 91 to generate a counterclockwise rotational moment in FIG. In such a state, when the cam roller 95 faces the cross guide surface 98 and shifts from the contact guide to the straight guide surface 97 to the contact guide to the cross guide surface 98 and is disposed in the cross slit 99, the tilt arm 91 is arranged. Is started to rotate, and the link row 30 is lifted more than the link row 27, whereby the slats 4 are rotated in the counterclockwise direction, and sequentially set in a vertically inclined state. Furthermore, as the belt 69 is wound around the pulley 63, the tilt arm 91 is rotated based on the abutment guide to the cross guide surface 98, and as shown in FIG. The slats 4 are held in a substantially vertical tilted state, and are completely closed by the blind 5 in a state where the opening 16 is completely blinded. Thereafter, the operation of the electric motor 78 is stopped, and the closing operation of the opening 16 by the blind 5 is completed. Even if the operation stop of the electric motor 78 is slightly delayed and the lower end 42 of the link member 25 is pulled upward in the extended link row 27, the movable body 53 elastically biased downward by the coil spring 54 is not moved. Since the electric motor 78 is moved upward, the lower end 42 of the link member 25 is not damaged even if the operation stop of the electric motor 78 is delayed, and conversely, the opening 16 can be surely fully closed by the blind 5. .
[0030]
When the opening 16 is opened by the blind 5, the electric motor 78 is operated in reverse to the above, and the cam roller 95 is shifted from the contact guide to the cross guide surface 98 to the contact guide to the linear guide surface 97, The link rows 27 and 30 are sequentially folded.
[0031]
In the blind device 1, when the opening 16 is fully opened, each of the slats 4 is closely polymerized (bundled) with each other below the opening 16, and the superposed slat 4 is formed on the lower surface of the upper frame 15. Because it doesn't exist, you can enjoy the original feeling of liberation. And only the upper part of the opening part 16 can also be open | released, and the release feeling at the time of partial opening becomes favorable compared with the conventional blind apparatus.
[0032]
In addition, in the closing operation of the blind 5, it is only necessary to lift the upper ends of the link rows 27 and 30, and the expansion and contraction mechanisms of the link rows 27 and 30 can be simply configured, and the lifting mechanism and the tilting mechanism are less likely to malfunction. Can do.
[0033]
Further, since the guide surface 96 of the cam mechanism 92 is provided on the inner wall 21, the compact tilt mechanism 12 can be obtained.
[0034]
The link lifting mechanism 11 includes the electric motor 78 and is configured to automatically lift the upper ends of the link mechanisms 7 and 8. Instead of this, as shown in FIGS. Thus, the link lifting mechanism 11 may be configured to lift the upper ends of the link mechanisms 7 and 8, and the emergency release mechanism 100 may be additionally provided.
[0035]
The link lifting mechanism 11 shown in FIG. 7 to FIG. 12 is fixed to the upper ends of the vertical frames 2 and 3, and is turned around pulleys 103 and 104 rotatably supported by brackets 61 and 62 via shafts 101 and 102, respectively. Similarly, pulleys 63 and 64 as rotating bodies disposed on the brackets 61 and 62 are wound around and engaged with the pulleys 63 and 64, and are wound around the turning pulleys 103 and 104, so that the feeding ends 65 and 66 are shafts. Metal belts 69 and 70 as flexible long bodies attached to 67 and 68, movable bases 75 and 76 on which rollers 71 to 74 are rotatably mounted, and pulleys 63 and 64 are rotated. And a rotary drive device 105 to be driven.
[0036]
The rotary drive device 105 is rotatably supported at the end portions of the brackets 61 and 62, and is arranged between the upper ends of the vertical frames 2 and 3, and a rotary shaft 81 to which pulleys 63 and 64 are fixed, The housing 112 has a worm wheel 113 fixed to the rotary shaft 81 and connected to the pulleys 63 and 64 via the rotary shaft 81, and a worm 114 meshing with the worm wheel 113. And a handle mechanism 118 that can manually rotate the worm shaft 117.
[0037]
The housing 112 through which the rotary shaft 81 is rotatably passed is attached to the bracket 61. In the middle of the housing 112, the lower end of the worm shaft 117 comes into contact with the lower end of the worm 114 when the worm shaft 117 is lowered. The worm shaft 117 penetrates the upper wall 122, the intermediate wall 121, and the lower wall 123 of the housing 112 and extends in the vertical direction, that is, the vertical direction. The shaft portion 124 of the worm shaft 117 is integrally formed with a flange portion 126 located in the space 125 in the housing 112.
[0038]
The handle mechanism 118 includes a rotating rod 132 connected to the lower end of the shaft portion 124 of the worm shaft 117 via a universal joint 131, and a handle member 133 attached to the rotating rod 132. The rotating rod 132 extends downward so that the handle member 133 can be manually operated from the indoor side.
[0039]
The rotation drive device 105 rotates the worm shaft 117 via the universal joint 131 by manually rotating the rotation rod 132 around its axis via the handle member 133 when the emergency release mechanism 100 is not operated. The rotation of the worm shaft 117 causes the worm wheel 113 engaged with the worm 114 to rotate, and thus the pulleys 63 and 64 are rotated via the rotation shaft 81.
[0040]
The emergency release mechanism 100 has a rotatable lever member 141, and the lever member 141 has a bifurcated portion 143 that can be engaged with a collar portion 126 formed integrally with the shaft portion 124 of the worm shaft 117, and , And a lever portion 144 formed integrally with the bifurcated portion 143, and is supported at the lower portion of the bifurcated portion 143 by the housing 112 via the pin shaft 145 so as to be rotatable in the R direction.
[0041]
The bifurcated portion 143 engages with the flange portion 126 and prohibits the worm shaft 117 from moving downward (in the H direction) at the first rotation position in the R direction of the lever member 141 (the rotation position shown in FIG. 9). Thus, the engagement between the worm wheel 113 and the worm 114 of the worm shaft 117 is maintained, and the lever member 141 is engaged with the flange 126 at the second rotation position in the R direction (rotation position shown in FIG. 11). Is released, allowing the worm shaft 117 to move downward (in the H direction). When the worm shaft 117 can be linearly moved downward, the pulleys 63 and 64 are rotated in the A direction by the rotational moment applied to the pulleys 63 and 64 due to the weight of the slat 4 via the belts 69 and 70. As a result, the worm wheel The engagement between the worm 113 and the worm 114 of the worm shaft 117 is released.
[0042]
When the emergency release mechanism 100 is not operated (in the state shown in FIG. 9), the engagement between the worm wheel 113 and the worm 114 of the worm shaft 117 is maintained, and thus the intention of the pulleys 63 and 64 is maintained. The rotation of the pulleys 63 and 64 in the A direction is prohibited when the lever member 141 is operated by the rotation of the lever member 141 in the R direction by the manual operation of the lever portion 144 (in the state shown in FIG. 11). Thus, the worm shaft 117 can be moved in the axial direction so that the engagement between the worm wheel 113 and the worm shaft 117 of the worm shaft 117 can be released. The belts 69 and 70 can be fed out by their own weight.
[0043]
The blind device 1 including the link lifting mechanism 11 and the emergency opening mechanism 100 shown in FIGS. 7 to 12 is arranged on the building window 161 so that the emergency opening mechanism 100 faces the room 160, as shown in FIG. In the blind device 1, when the opening 16 is closed, first, the pulley 63 is rotated via the universal joint 131, the worm shaft 117, the worm wheel 113, and the rotating shaft 81 by the rotation of the rotating rod 132 by manual operation of the handle 133. And 64 are rotated in the direction opposite to the direction A, whereby the belts 69 and 70 are wound around the pulleys 63 and 64, and the tilt arm 91 is raised.
[0044]
When the opening 16 is opened by the blind 5, the rotating rod 132 is rotated reversely by the manual operation of the handle 133, and the tilt arm 91 is lowered.
[0045]
When the opening 16 is urgently opened in the partially closed state or the completely closed state of the opening 16 by the blind 5, the lever portion 144 is rotated in the R direction so that the flange portion 126 and the forked portion 143 Release the engagement. This disengagement enables the worm shaft 117 to move in the axial direction, causing the pulleys 63 and 64 to rotate in the A direction due to the weight of the slat 4, thereby disengaging the worm wheel 113 from the worm shaft 117 on the worm shaft 117. Thus, the worm wheel 113 can be freely rotated, that is, the pulleys 63 and 64 can be freely rotated via the rotation shaft 81, and the belts 69 and 70 are fed out by the weight of the slat 4 by the free rotation of the pulleys 63 and 64 in the A direction. The slats 4 are lowered, the partially closed state or the completely closed state of the opening 16 by the blind 5 is released, and the opening 16 is fully opened.
[0046]
In the blind device 1 having the emergency release mechanism 100, the blind 5 can be brought into an open state in an emergency, and the emergency release mechanism 100 releases the lifting of the upper ends of the link mechanisms 7 and 8 by the link lifting mechanism 11. Since the slat 4 is lowered by its own weight, power is not particularly required, and emergency opening can be performed without any problem even in an abnormal situation such as a power failure.
[0047]
Further, the emergency opening mechanism 100 enables the worm shaft 117 to move in the axial direction (H direction), and the opening 16 is opened by the blind 5 through a change in the meshing state between the worm wheel 113 and the worm shaft 117. Therefore, it is easy to return after emergency opening.
[0048]
In addition, since the emergency release mechanism 100 has a pivotable lever member 141, it is possible to bring the blind 5 into an open state by one behavior by operating the lever member 141. Since the opening can be achieved and the lower ends of the link mechanisms 7 and 8 are pulled downward by the elastic mechanisms 9 and 10, the slat 4 can be given an elastic lowering force in addition to its own weight. Emergency opening can occur reliably and quickly.
[0049]
In the emergency opening mechanism 100, the rotation of the pulleys 63 and 64 in the A direction is caused mainly by the weight of the slat 4 in the emergency opening of the opening 16, but between the intermediate wall 121 and the flange 126. An elastic means such as a coil spring is provided so that the worm shaft 117 is always elastically biased in the H direction. In the emergency opening of the opening portion 16, the elastic force of this elastic means is added to the weight of the slat 4. Thus, rotation of the pulleys 63 and 64 in the A direction may be caused.
[0050]
【The invention's effect】
According to the present invention, it is possible to eliminate an annoying polymerized slat when the opening is fully opened, and to have an original feeling of release, with a simple structure, excellent safety, and less failure. In addition, a blind device that can be a compact tilting mechanism can be provided.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a preferred example of an embodiment of the present invention.
2 is a detailed front view of the example shown in FIG.
FIG. 3 is a detailed side view of the example shown in FIG. 1;
4 is a detailed explanatory diagram in a vertical frame of the example shown in FIG. 1. FIG.
FIG. 5 is an operation explanatory diagram of the example shown in FIG. 1;
6 is an operation explanatory diagram of the example shown in FIG. 1. FIG.
FIG. 7 is a partial detailed explanatory view of another example of a preferred embodiment of the present invention.
FIG. 8 is a schematic plan view when the example shown in FIG. 7 is applied to a building window.
FIG. 9 is a detailed side view of the example shown in FIG. 7;
10 is a partially enlarged back view of the example shown in FIG.
11 is an operation explanatory diagram of the example shown in FIG. 7;
12 is an enlarged perspective view of the lever member shown in FIG. 9. FIG.
[Explanation of symbols]
1 Blind device
2, 3 vertical frame
4 Slats
5 Blind
7, 8 Link mechanism
11 Link lifting mechanism
12, 13 Tilt mechanism
27 First link row
30 Second link row
32 Third link row
91 Tilt arm
92 Cam mechanism
95 Laura
96 Information plane

Claims (2)

  A blind composed of a large number of slats juxtaposed in the vertical direction between a pair of vertical frames, supports each end of the slats, and a telescopic link mechanism arranged in the vertical frame, and the lower end is a vertical frame A link lifting mechanism that lifts the upper end of the link mechanism connected to the blind and places the blind in the opening closed position, and a tilt mechanism that tilts each of the slats via the link mechanism at a given opening closing position of the blind The link mechanism includes a first link row made up of a number of first link members, and a second link made up of a plurality of second link members arranged in parallel with the first link rows. A plurality of third link members having one end connected to each of the first link members of the first link row and the other end connected to each of the second link members of the second link row. A third link row consisting of Each end portion of the slat is connected to each of the third link members of the third link row, and the tilt mechanism has one end portion of the first link row at the upper end portion of the first link row. A pivotable tilt arm whose other end is pivotally connected to the link member and a second link member at the upper end of the second link row, and a cam for setting the pivot state of the tilt arm The link lifting mechanism lifts the upper end of the link mechanism via the tilt arm. The cam mechanism includes a cam attached to an intermediate portion of the tilt arm and a pair of vertical A guide surface provided on inner walls facing each other of the frame for guiding the movement of the cam when lifting the upper end of the link mechanism. The guide surface includes a linear guide surface extending in the vertical direction and the straight line. It is continuous with the guide surface and the linear guide surface The end of the uppermost slat is connected to the end of the uppermost slat and the other end is connected to the tilt arm. The other end of each of the other slats except the uppermost slat is supported by a tilt arm via a fixture, and one end of each of the other slats and the other end of the third link row. Each of the corresponding third link members is supported by the link mechanism via respective attachments respectively connected to each other, and the attachments pass through the inner walls facing each other of the pair of vertical frames. A linear slit extending in the vertical direction so as to allow the vertical movement of the fixture, and a cross slit extending in a direction intersecting with the linear slit and extending in the direction in which the linear slit extends are formed. The straight guide surface is A blind device in which a straight slit formed in the inner wall is defined, and the cross guide surface defines a cross slit formed in the inner wall.   The blind device according to claim 1, wherein the cam includes a roller rotatably attached to an intermediate portion of the tilt arm.

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