JP2002242522A - Gear hinge for folding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gear hinge for the folding door equipped with a stopper mechanism capable of maintaining the folding doors to be flush with each other when the doors are closed. SOLUTION: The gear hinge 6 for the folding door is provided with a countersink-shaped stopper receiving portion 623 on the surface of a reinforcing plate 62 overlapped and fixed to a pair of gears 61 interlocked each other, a stopper holding member 67 is attached to a coupling member 64 for coupling both the gears 61, and the state of interlocking of both the gears 61 is restricted to a predetermined position by linking a stopper 68 comprising steel balls protruded from the stopper holding member 67 in an urged state. By forming the stopper receiving portion 623 in a position receiving the stopper 68 in a locking state of both the gears 61 when both the doors become flush with each other, the door can be maintained flush when the door is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding door gear hinge for opening and closing two doors in a folding door used for an interior door or the like.

[0002]

2. Description of the Related Art A folding door in which two doors are foldably connected has been used in a telephone box, a closet, a unit bus and the like. Such a folding door has an advantage that the track space required for opening and closing the door can be made smaller than a hinged door, and it is not necessary to provide a door pocket space like a sliding door, so in recent years it has been used as an interior door in a general residential house. Is also being used.

[0003] This type of folding door is basically provided with two parent and child doors divided inside an opening frame (three-sided frame) so as to divide the opening width into about 1: 1 to 3: 1. , These doors are hinged so as to be foldable. The hanging side door (child door) is rotatably attached to the hanging side end of the opening frame via a shaft hanging metal such as a pivot hinge, and is about 90 degrees inward or outward from the closed position. , Or about 90 degrees in both directions. Also,
The door on the hand side (parent door) is suspended via a suspension door roller that runs along a rail provided on the upper frame of the opening frame, slides in the opening width direction, and is centered on a suspension axis of the suspension door roller. It is designed to rotate.

The door on the hanging side and the door on the hand side are connected to each other so as to be rotatable from a position on the same plane to a folded position. The connection includes a gear hinge as shown in FIG. 9 are used. The gear hinge 9 has gears 91 and 9 having an arcuate meshing portion slightly larger than a semicircle.
1 are meshed with each other, and the central axes of the gears 91, 91 are rotatably connected by connecting plates. By fixing one of the pair of gears 91 and 91 to the hanging-side door 93 and the other to the hand-side door 94, the hanging-side door 93 and the hand-side door 94 can be inverted by 360 degrees with respect to each other. That is, it is held so that it can be folded in both directions. Such a gear hinge 9 is usually provided with doors 93, 9
4 are attached to the upper and lower edges.

[0005]

In the case of the conventional folding door, when the mounting accuracy of the door and the supporting hardware is not good, the door on the hanging side and the door on the hand side do not become flush when the door is closed. In some cases, it may be slightly bent in either of the inner and outer directions. An object of the present invention is to provide a folding door gear hinge provided with a stopper mechanism capable of holding the door at the same time when the door is closed in this type of folding door.

[0006]

In order to solve the above-mentioned problems, a gear hinge for a folding door according to the present invention has a structure in which two hinges constituting a folding door are fixed to opposing edges of the two doors, respectively. A pair of gears that mesh with each other, a connecting member that keeps the center axes of the pair of gears rotatable while maintaining a constant distance between the two gears, a stopper holding member attached to the connecting member, and the stopper A stopper held by a holding member and protruding toward the rim surface of the gear in a biased state, and a stopper formed at a predetermined position on a rim surface of the pair of gears or a surface of a reinforcing plate fixed on the rim surface. A stopper protruding from the stopper holding member is engaged with the stopper receiving portion when the two gears are at a predetermined meshing position. , The rotation of the gears is restrained, 2
The folding angle of the doors is kept constant.

That is, in this configuration, a stopper receiving portion is provided on a rim surface of a pair of gears meshing with each other or on a surface of a reinforcing plate fixed on the rim surface, and a stopper holding member is provided on a connecting member connecting the two gears. By attaching the stopper and projecting from the stopper holding member to the stopper receiving portion, the meshing state of both gears is restrained. According to the present invention, the position for holding the door can be arbitrarily set depending on the position where the stopper receiving portion is provided. Since the restraining means for holding the door is based on the engagement between the stopper projecting in the biased state and the stopper receiving portion, the holding force of the door can be appropriately adjusted by adjusting the biasing force of the stopper. Also,
Since the stopper and the stopper holding member are formed integrally with both the gears and the connecting member, the overall structure becomes compact. Therefore, attachment to the door is easy, and there is no need to perform complicated processing on members constituting the door.

In the above construction, the stopper is a steel ball, and the stopper receiving portion is a countersunk hole capable of receiving the steel ball, so that the stopper can be more smoothly engaged with the stopper receiving portion.

Further, by forming the stopper receiving portion at a position for receiving the stopper when the two gears mesh with each other when the two doors are flush with each other, the door can be held flush with the door closed. .

Further, the stopper receiving portion is formed at a position for receiving the stopper in a state where the two gears mesh with each other when the two doors are folded so as to overlap with each other, so that the door is held in a fully opened state. Can be.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

<Overall Configuration of Folding Door> FIGS. 1 and 2 show the overall configuration of a folding door 1 using a connecting member according to an embodiment of the present invention, and FIG. Show.

In the folding door 1, the door 21 on the hanging side and the door 22 on the hand side are formed in a width ratio of about 1: 2 to form a pair. Opening frame (three-sided frame) composed of a vertical frame 31, a hand-side vertical frame 32, and an upper frame 33
3 mounted inside. The inner surfaces of both vertical frames 31, 32
It has a flat surface with no door stop members. The suspension rail 4 and the suspension rail cover 34 are attached to the lower surface of the upper frame 33. There is no lower frame below the opening frame 3, and the floor surface 35 is finished flush. A magnet-type lever handle 36 is attached to the hand-side door 22, and a corresponding magnet-type seat (not shown) is attached to the inner surface of the hand-side vertical frame 32.

The opposing side edges of the hanging-side door 21 and the hand-side door 22 are formed so as to have a substantially semicircular cross section, and are held through a minute gap. The door 21 on the hanging side and the door 22 on the hand side are connected via the gear hinge 6 attached to the opposite upper and lower edges,
It is held so that it can be flipped 360 degrees relative to each other, i.e. it can be folded in any direction.

As shown in FIG. 4, the hanging-side door 21 is attached to an upper pivot 26 attached to an end of the hanging rail 4 on the hanging side and to a lower end of a vertical frame 31 on the hanging side. The lower pivot 27 is rotatably supported by a shaft hanging member. Upper pivot 26 and lower pivot 27
The center of the pivot axis coincides with the center of the thickness of the door 21 on the suspension side, and the door 21 on the suspension side is 90 degrees in both the inside and outside directions (forward and rearward in the traveling direction) around the closed position. It is held so that it can rotate more than degrees.

The hand-side door 22 is hung by a hanging door wheel 5 that slides along the hanging rail 4 and is held so as to be pivotable about the hanging door wheel 5. Thereby, the door 22 on the hand side can be moved as shown in FIG.
While rotating in the opposite direction in conjunction with the rotation of the door 21 on the hanging side, it moves to the hanging side when the door is opened and moves to the hand side when the door is closed.

<Structure of Gear Hinge>
The gear hinge 6 for connecting the gear hinges 22 will be described in detail. FIG. 5 is a top view of the gear hinge 6 attached to the upper edge of both doors 21 and 22, and FIG. FIG. 7 is an exploded perspective view showing a component configuration of the gear hinge 6.

The gear hinge 6 is fixed to the upper edge portions of the doors 21 and 22 facing each other, and is engaged with a pair of gears 61, 61;
1, a stopper member 67 attached to the connecting member 64, and a stopper 68 held by the stopper holding member 67.

The two gears 61, 61 are spur gears made of metal or hard resin, and have the same shape tooth tip 612 formed on the outer periphery of the arc-shaped rim surface 611, so that they mesh with each other in the same plane. ing. However, strictly speaking, both gears 6
The tooth tops 612 and 612 of 1,61 have tooth phases shifted from each other by a half pitch. Each gear 61 has a rim surface 61
A shaft hole 613 that penetrates one central axis is formed. In addition, an appropriate position of the rim surface 611 of each gear 61 (in this example, a position separated from the center axis by a certain distance in parallel with the chord portion cut in a straight line) is used to insert the fixing screw 63. Two screw insertion holes 614 are formed symmetrically.

An arc-shaped reinforcing plate 62 having the same diameter as or slightly smaller than the root circle of the gear 61 is attached to the upper rim surface 611 of each gear 61. The reinforcing plate 62 is made of a hard synthetic resin having a small coefficient of friction or a metal plate having a smooth surface, and is superimposed on each gear 61 so that each gear 61 has the same central axis. This reinforcing plate 62
Similarly to the gear 61, a shaft hole 62 penetrating the center shaft is provided.
1 and two screw insertion holes 622 penetrating through a position corresponding to the screw insertion hole 614 of the gear 61.

The gear 61 and the reinforcing plate 62 have their respective chords directed toward the doors 21 and 22, and have their respective screw insertion holes 61.
4,622 are fixed to the vertical frame members 28 attached to the opposite side edges of the doors 21 and 22, respectively. The vertical frame member 28 is, for example, an extruded member made of an aluminum alloy, and has a substantially arc-shaped cross section on the facing side when the door is closed. The end face of the vertical frame member 28 is provided with the screw insertion hole 6 described above.
At the position coinciding with 14, 622, a screwing portion 281 of the fixing screw 63 is provided. In addition, a groove 282 for fitting a rubber (not shown) for preventing finger stuffing is formed on a side surface on the mating side of both vertical frame members 28.

The pair of gears 61, 61 are fixed screws 6
3 and fixed to the vertical frame members 28 and 28, respectively, and connected via a connecting member 64 so as to be rotatable relative to each other and so that the distance between the shafts of the two gears 61 and 61 is constant. . The connection member 64 includes a connection plate 65 made of a substantially elliptical metal plate, a pair of connection pins 66,
66. The connecting pin 66 combines a male part 661 and a female part 662 that can be screwed together, and the male part 661 with a small diameter is screwed into the axis of the female part 662 with a large diameter having a bottom. It has become. The length of the female portion 662 is formed to be somewhat larger than the thickness in which the gear 61 and the reinforcing plate 62 are overlapped. Further, shaft holes 651 having a smaller diameter than the female portion 662 of the connection pin 66 are formed at the center positions of the semicircular portions at both ends of the connection plate 65.
Then, the female portion 662 of each connecting pin 66 is inserted from below the gear 61 into the shaft holes 613 and 621 of the gear 61 and the reinforcing plate 62, and the connecting plate 65 is applied to the upper end surface of the female portion 662, A shaft hole 651 from the upper side of the connection plate 65
The male part 661 of the connecting pin 66 inserted into the female part 662
Is screwed into. As a result, the connecting plate 65 is held above the reinforcing plate 62 at a fixed distance, and the two gears 61, 61 are held rotatably around the connecting pins 66, 66 in a state of always meshing properly.

The stopper holding member 67 is a substantially rectangular parallelepiped member made of metal or hard resin. The stopper holding member 67 is disposed between the connecting plate 65 and the reinforcing plate 62 and is fixed to the connecting plate 65 with a screw. A minute gap is formed between the bottom surface of the stopper holding member 67 and the reinforcing plate 62. I have. A pair of stopper guide holes 671 and 671 are formed in the stopper holding member 67.
The stopper guide hole 671 is a vertical hole that opens at least on the bottom surface side of the stopper holding member 67, and is formed to penetrate the stopper holding member 67 in the vertical direction in this example. As shown in FIG. 5, when the stopper holding member 67 fixed to the connection plate 65 is viewed from above, the axes of the stopper guide holes 671 and 671 are located on a line connecting the axes of the connection pins 66 and 66. The gears 61 are formed so as to be located slightly inside from the periphery of the root circle of the two gears 61. A stopper 68 made of a steel ball and a coil spring 69 that presses the stopper 68 downward are inserted into the stopper guide hole 671. As a result, the stopper 68 is always pushed downward from the stopper guide hole 671 and contacts the upper surface of the reinforcing plate 62.

On the other hand, on the upper surface of each reinforcing plate 62, a shallow countersunk stopper receiving portion 623 having a slope at the peripheral edge is formed. In this example, the stopper receiving portion 623 serves as both the gears 61, 61 when both the doors 21, 22 are in the closed state.
At the engagement position (the state shown in FIG. 5) of each stopper guide hole 6
One portion is formed on each gear 61 so as to coincide with 71. Therefore, when the two doors 21 and 22 approach the closed state, the stopper 68 which is going to protrude downward falls along the peripheral edge of the stopper receiving portion 623, and the meshing state of the two gears 61 and 61 is changed as shown in FIG. Guide to the state. Then, the stopper 68 is connected to the stopper receiving portion 623.
Of the gears 61, the urging force of the coil spring 69 pressing down the stopper 68 restrains the rotation of the two gears 61. In this way, the postures of the doors 21 and 22 at the time of closing the door are kept flush.

In order to open the doors 21 and 22 from this state, the hand 22 is pulled (or pushed) while rotating by hand, and the gears 61 and 22 are forcibly forced by a force greater than the urging force of the coil spring 69.
Rotate 61. Then, with a slight response, the stopper 68 is pushed up along the peripheral edge of the stopper receiving portion 623, and the position of the stopper receiving portion 623 and the stopper guide hole 671 is displaced.
Ride on a smooth top surface. Thereby, the doors 21 and 22
Can be freely opened and closed.

The gear hinge 6 of the present invention restricts the meshing state of the two gears 61 to a predetermined position by the engagement of the stopper 68 and the stopper receiving portion 623 in this manner, whereby the two doors 21 and 22 are provided. Is kept constant. The stopper 68 is held by a stopper holding member 67 provided close to the gear 61, and moves up and down a minute range toward the rim surface 611 of the gear 61 while receiving the urging force of the small coil spring 69.
Therefore, the structure of the gear hinge 6 of the present invention is extremely compact, and has almost no effect on the appearance of the folding door 1. In addition, since the entire gear hinge 6 can be assembled as an integral part, the gear hinge 6 can be easily attached to the doors 21 and 22, and it is difficult for the gear hinge 6 to be out of order or deteriorated with time.
Also, there is no need to perform complicated processing on the face materials constituting the doors 21 and 22.

Further, the gear hinge 6 according to the present invention is configured such that when the doors 21 and 22 are closed, when the door is approaching the closed state, the biased stopper 68 falls along the peripheral edge of the stopper receiving portion 623 and the two gears 61. , 61 are brought into a completely closed state, so that they also function as door closers. Thus, it is possible to prevent the doors 21 and 22 from being left closed in an insufficient state.

<Other embodiments> Gear hinge 6 of the present invention
Is not limited to the above embodiment, but may be modified as follows.

The gear 61 and the reinforcing plate 62 may be formed as an integral part instead of as separate parts. In this case, the stopper receiving portion 623 is formed on a surface corresponding to the rim surface 611 of the gear 61. Similarly, for example, the connection plate 65 and the stopper holding member 67 are not separate components,
It can be formed as an integral part.

The position of the stopper receiving part 623 is
Not only the position where the doors 1 and 22 are closed, but also other positions,
For example, it can also be formed at a position where both doors 21 and 22 are folded in an open state. When the stopper receiving portions 623 are provided at a plurality of positions, they are arranged on an arc having a constant radius centered on the central axis of each gear 61. Specifically, as shown in FIG. 8, an arc is drawn around the central axis of the gear 61 and passing through the stopper receiving portion 623 located at the center on the merging side, and on this arc, The screw insertion hole 614 is disposed at a position at which the central angle with respect to 623 is 90 degrees. Then, the peripheral edge on the upper surface side of the screw insertion hole 614 is formed in a countersink shape like the stopper receiving portion 623. Thus, not only in the closed state but also in the state where the doors 21 and 22 are folded inward and outward,
It is possible to restrain the meshing states of the gears 1 and 61.
However, the countersink hole serving as the stopper receiving portion 623 and the screw insertion hole 614 of the fixing screw 63 may of course be formed separately.

The stopper 68 is not limited to a steel ball, and may be any other suitable component such as a pin member having a hemispherical tip, as long as it can smoothly engage the stopper receiving portion 623. Can be. Similarly, the stopper 68
An elastic member other than the coil spring 69 can be used as a means for urging the elastic member in the projecting direction.

The gear hinge 6 has two doors 21 and
It can also be mounted upside down on the lower edge of 2. Further, it can be attached to both the upper edge and the lower edge of both doors 21 and 22.

[0033]

The folding door gear hinge of the present invention has a stopper receiving portion provided on the rim surface of a pair of gears meshing with each other or on the surface of a reinforcing plate fixed on the rim surface. Attach the stopper holding member,
By engaging a stopper projected from the stopper holding member with the stopper receiving portion, the meshing state of both gears is restricted. Therefore, the door can be held at an arbitrary position depending on the position where the stopper receiving portion is provided. Since the restraining means for holding the door is based on the engagement between the stopper projecting in the biased state and the stopper receiving portion, the holding force of the door can be appropriately adjusted by adjusting the biasing force of the stopper.

The stopper receiving portion is formed at a position for receiving the stopper when the two gears are engaged with each other when the two doors are flush with each other, so that the door is held flush with the door closed and the door is kept flush. Aesthetically pleasing.

As described above, the folding door gear hinge of the present invention is attached to the connecting portion of the parent and child doors to properly maintain the posture of both doors, so that the structure itself is compact and the opening frame of the folding door is opened. No special structure is required for the latch and the latch part. Therefore, the present invention can be particularly suitably used in an inside / outside double-door type folding door in which the inner surface of the opening frame is flattened.

[Brief description of the drawings]

FIG. 1 is a front view showing the entire configuration of a folding door to which a gear hinge of the present invention is attached, and a part of the folding door is shown to show an internal structure.

FIG. 2 is a sectional view taken along line A-A 'of the folding door shown in FIG.

FIG. 3 is a track diagram of the door when the folding door shown in FIG. 1 is opened and closed.

FIG. 4 is a perspective view of a shaft hanging member (an upper pivot and a lower pivot) that supports a door on a hanging side of the folding door shown in FIG. 1;

FIG. 5 is a top view showing a state in which the gear hinge according to the embodiment of the present invention is attached to the upper edge of the door.

FIG. 6 is also a half front and half sectional view showing a state in which the gear hinge according to the embodiment of the present invention is attached to the upper edge of the door.

FIG. 7 is an exploded perspective view showing a component configuration of the gear hinge.

FIG. 8 is a top view showing a state in which a gear hinge according to another embodiment of the present invention is attached to an upper edge of a door.

FIG. 9 is a perspective view of a gear hinge according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Folding door 21 Hanging side door 22 Hand side door 6 Gear hinge 61 Gear 611 Rim surface 62 Reinforcement plate 623 Stopper receiving part 64 Connecting member 67 Stopper holding member 68 Stopper

Claims (4)

[Claims] 1. A pair of gears which are respectively fixed to opposed edge portions of two doors constituting a folding door and mesh with each other in the same plane, and a center shaft of the pair of gears is rotatably held, respectively. A connecting member that keeps the distance between the axes of the two gears constant, a stopper holding member attached to the connecting member, and a stopper that is held by the stopper holding member and protrudes toward the rim surface of the gear in a biased state. And a stopper receiving portion formed at a predetermined position on the rim surface of the pair of gears or the surface of the reinforcing plate fixed on the rim surface, and when the two gears are at a predetermined meshing position, By engaging the stopper projecting from the stopper holding member with the stopper receiving portion, the rotation of both gears is restrained, and the bending angle of the two doors is kept constant. Orito for Giyahinji to butterflies. 2. The gear hinge for a folding door according to claim 1, wherein the stopper is a steel ball, and the stopper receiving portion is a countersunk hole capable of receiving the steel ball. 3. The gear hinge for a folding door according to claim 1, wherein the stopper receiving portion is formed at a position for receiving the stopper when the two gears mesh with each other when the two doors are flush with each other. . 4. The folding door according to claim 1, wherein the stopper receiving portion is formed at a position for receiving the stopper in a state where the two gears mesh with each other when the two doors are folded so as to overlap with each other. Gear hinge.