JP2512563Y2 - Hinge for folding door - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a hinge used for a folding door of furniture and fittings.

[Conventional technology]

For this type of hinge for folding door, the applicant of the present invention,
As disclosed in Japanese Laid-Open Patent Publication No. 119771, there is a device provided with a posture holding portion that holds the posture of the folding door at the open position of the folding door.

Further, like a hinge for a door such as a folding door disclosed in Japanese Utility Model Laid-Open No. 63-134088, a cam member having a flat engaging surface is provided on one door side, and the cam member is engaged on the other door side. Some include an engaging member having a flat surface for engaging the mating surface.
With this door hinge, the open position of the folding door and the V-shaped open position
The flat engagement surface of the engagement member is engaged with the flat engagement surface of the cam member to hold the folding door at the open position and the V-shaped open position.

[Problems to be solved by the invention] By the way, for example, in a partition structure in which a plurality of folding doors are arranged in a row, when opening a frontage, each folding door is folded and pushed by one side or both sides of the opening by hand to move them together. ing.

In this case, the folding door having the hinge of the structure disclosed in Japanese Utility Model Laid-Open No. 1-119771 has only the posture maintaining function of the open position, so that the folding door is completely folded during movement. Therefore, the rail support of each door approaches, the center of gravity shifts to the maximum from the rail, and knocking or rattling occurs when moving, smooth movement cannot be obtained, and unnecessary labor is also required. Met. This is not only a problem of movement operability but also a factor that causes an early deterioration of the rail and the runner member due to the action of an unbalanced load in the long term.

Therefore, the hinge for the door such as the folding door disclosed in Japanese Utility Model Laid-Open No. 63-134088 is held so that the folding door can be moved while holding the V-shaped open position of the folding door so that the folding door is in an extremely cantilevered state. It has a posture holding function in the V-shaped open position.

However, since this door hinge tries to maintain its posture by engaging flat surfaces with each other, the posture holding force is extremely small. Therefore, when the folding door is pushed by hand to move, the engagement between the cam member and the engaging member is easily disengaged, and there is a possibility that the folding door cannot be moved while the V-shaped open position is maintained. To move the folding door, the end of the folding door opposite to the side where the hinge is attached is pushed, so that the length from this pushing position to the hinge is close to the width of the door plate. Therefore, the force (rotational moment) for disengaging the cam member and the engaging member to fold the folding door becomes considerably large, and the door hinge moves the folding door while maintaining the V-shaped posture. Is considered difficult.

Further, as a hinge having a posture maintaining function at the V-shaped open position of the folding door, there is one disclosed in Japanese Utility Model Laid-Open No. 63-111574. In this hinge, a rotation holding recess is provided around the pivot shaft of one hinge piece, and a ball biased by a spring toward the pivot shaft side is provided on the other hinge piece, and the folding door is V-shaped. At the open position, the ball is fitted into the rotation holding concave portion and is held in a V shape.

However, in this hinge, since the ball, which is a spherical body, is pressed toward the center of the arc-shaped rotation holding concave portion into which a part of the outer peripheral surface of the ball is fitted, a rotation moment is generated at the start of rotation. There is almost no resistance against rotation. When the rotation starts and deviates from the above position, the rotation moment is generated, and the force to return the rotation moment acts. Therefore, when the folding door is moved along the rail in a V-shaped open state, the folding door first wobbles and becomes unstable at the start of the movement pressing, the locking force is extremely weak, and the V-shaped opening position is maintained. So it will be difficult to move the folding door.

Therefore, an object of the present invention is to provide a hinge for a folding door that can reliably hold the V-shaped opening position when the folding door is moved and is not likely to be folded.

[Means for solving problems]

This invention has adopted the following means in order to achieve the above object.

That is, in a hinge for a folding door in which a pair of mounting plates rotatably connected by a shaft pin and a pin holding part are attached to a pair of door plates respectively, and the door plates are openably and closably connected, one mounting plate has a convex portion. A slider is provided and biased in a direction orthogonal to the pin holding portion of the other mounting plate,
The pin holding portion of the other mounting plate is provided with a concave portion that fits with the convex portion at the V-shaped open position of the folding door, and the convex portion has a side surface angle in the opening direction of the folding door with respect to the tip end surface of the folding door. It is formed to be smaller than the angle of the side surface of the concave portion, and both inner side surfaces of the concave portion are inclined at the same angle as both side surfaces of the convex portion.

[Action]

According to the folding door hinge of the present invention, the V-shaped open position of the folding door is held by the convex portion of the slider being fitted into the concave portion of the pin holding portion by the biasing force at the V-shaped opening position of the folding door. The side surface of the convex portion having a steep inclination in the opening direction is biased by planarly contacting the inner side surface of the concave portion inclined at the same angle as the side surface. When the folding door is moved, the side surface in the opening direction of the convex portion abuts against the inner surface of the concave portion in a planar manner and is biased, so that the folding door is closed by receiving rotational torque in the direction opposite to the closing direction of the folding door. The rotation in the direction (folding direction) is restricted.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings of FIGS. 1 to 11.

The folding door 2 is composed of door plates 3 and 4, and the door plate 3 and
Numerals 4 adjacent to each other are openably and closably connected to each other by hinges 1 for folding doors. The folding door 2 is an upper rail as shown in FIG.
It is supported by upper runners 32, 32 and lower runners 33, 33 between 30 and the lower rail 31. The folding door 2 is opened substantially flush when opened and folded when closed.

The mounting plate 6 is provided with pin holding portions 6a and 6b. Further, the mounting plate 7 is provided with pin holding portions 7a, 7b, 7c. The height dimension t of the pin holding portion 7b is set to be approximately twice the height dimension of the other pin holding portions. Pin holder
6a, 6b, 7a, 7b, 7c are formed with a hole extending in the axial direction, and a shaft pin 18 is inserted into this hole, and the mounting plates 6 and 7 are rotatably connected.

The mounting plate 6 is provided with a slider 20 held by a slider holder 21, and the slider 20 has a pin holding portion 7b.
It is possible to slide in the direction orthogonal to. The height h of the slider 20 is set to be substantially equal to the height t of the pin holding portion 7b. The convex portion 20a of the slider 20 faces the pin holding portion 7b. A spring 22 is provided in the slider holder 21,
This spring 22 causes the slider 20 to move the pin holding portion 7b.
Is being biased toward.

The protrusion 20a of the slider 20 is a side surface 2 of the folding door 2 in the opening direction.
0c and a side surface 20d of the folding door 2 in the closing direction, and these side surfaces 20c and 20d are inclined toward the pin holding portion 7b. Specifically, as shown in the enlarged view of FIG. 8 to FIG.
The angle α formed by the tip surface 20b and the side surface 20c of a is smaller than the angle θ formed by the tip surface 20b and the side surface 20c.
0d has a gentler slope than the side surface 20c.

The pin holding portion 7b has concave portions 24 and 25 which are convex portions 20 of the slider 20.
It is formed at the same height as a. The recess 24 is for holding the V-shaped open position of the folding door 2, and the recess 25 is for holding the closed position of the folding door 2. Recess 24,
The inner side surfaces 24a, 25a of 25 are the side surfaces 20 of the protrusion 20a of the slider 20.
It is an inclined surface with the same angle as c. The inner side surfaces 24b and 25b of the concave portions 24 and 25 are inclined surfaces having the same angle as the side surface 20d of the convex portion of the slider 20. The recesses 24 and 25 are formed to be slightly larger than the protrusions 20a. When the protrusions 20a fit into the recesses 24 and 25, the side faces 20d of the protrusions 20a and the inner side faces 24 of the recesses 24 and 25 are formed.
The gap S is set to open between b and 25b.

The mounting plates 6 and 7 are embedded in the storage portions 11 and 12 formed in the doorways 3 and 4 and the entrance surfaces 8 and 9, and attached by screws 15.

In this way, the mounting plates 6 and 7 of the hinge 1 for the folding door are the door plates 3 and 4.
Since it is embedded and installed in the storage parts 11 and 12,
The mounting plates 3 and 4 are hidden when the folding door is opened.

Next, the operation of the folding door hinge 1 from the open position of the folding door 2 to the state of holding the V-shaped opening position and further to the state of holding the closing position will be described.

As shown in FIG. 5, when the folding door 2 is in the open position, the tip surface 20b of the protrusion 20a of the slider 20 has a spring 22
Is pressed against the peripheral surface of the pin holding portion 7b by the elastic force of.

When the folding door 2 is rotated from the state shown in FIG. 5 to the V-shaped open position in which the angle β formed by the wood entrance surfaces 8 and 9 of the door plates 3 and 4 is 50 ° as shown in FIG. 6, As shown in FIG. 8, the projection 20a of the slider 20 has a side surface 20c with a recess 24a.
It fits into the recess 24 while sliding on the inner surface 24a. And as shown in FIG. 6 and FIG.
With a gap S between the inner surface 24b of the recess 24 and
Fitting in the recess 24, the folding door 2 is in a state of holding the V-shaped open position as shown in FIGS. 2 and 3.

In the state in which the V-shaped open position is maintained, the folding door 2 does not have an extreme cantilever state like the open position, and therefore knocking or rattling does not occur when the folding door 2 is moved, and the folding door 2 is smooth. It is possible to move.

The convex portion 20a is fitted into the concave portion 24 in a state where the side surface 20c of the folding door 2 in the opening direction is in contact with the inner side surface 24a of the concave portion 24, and moreover, the height dimension t of the pin holding portion 7b and the height dimension h of the slider 20. Since they are formed to have substantially the same length, the holding force of the folding door 2 at the V-shaped open position is considerably large. Therefore, in FIG. 3, the force which tries to fold the folding door 2 (rotational moment) which is generated when the length L is pushed in the direction indicated by the arrow P from the door plates 3 and 4 and the lengths L and 9 are moved in the direction indicated by the arrow P. ) Is large enough to withstand this force and the folding door 2 will not be inadvertently folded.

When the folding door is further rotated from the state shown in FIGS. 6 and 9, the side surface 20d of the convex portion 20a becomes the concave portion 24 as shown in FIG.
Touches the inner surface 24b of the. As described above, the side surface 20 of the convex portion 20a
Since d and the inner side surface 24b of the concave portion 24 are inclined surfaces, when the force to fold the folding door 2 becomes a certain amount or more, the convex portion 20a changes the side surface 20d to the inner side surface as shown in FIG. While sliding on 24b, it moves in the direction away from recess 24
Comes out of the recess 24.

When the folding door 2 is pushed further, the tip end surface 20b of the convex portion 20a slides on the peripheral surface 28 of the pin holding portion 7b. When the folding door 2 is in the closed position as shown in FIG.
The same operation as when fitting the side surface 20a to the recess 25
Fit the recess 25 while sliding the inner surface 25a of the
Is in the closed position.

As described above, the side surface 20c of the convex portion 20a and the inner side surface of the concave portion 24
24a and the inner side surface 25a of the recess 25 are steeper than the side surface 20d and the inner side surface 25b.
You need to apply more force to close the.

The folding door hinge 1 according to the above-described embodiment is embedded in the ostium surfaces 8 and 9 of the door plates 3 and 4, but the present invention is not limited to this, and may be applied to a folding door hinge attached to the back surface of the door plate. It is possible. In the example, the slider
The protrusion 20a is provided on 20 and the recesses 24 and 25 are formed on the pin holding portion 7b, but the protrusions and recesses are not limited to these structures, and the folding door can be held at the V-shaped closed position. As long as it is possible, it can be placed anywhere on the mounting plates 6 and 7, and any shape can be used. Further, in the embodiment, the V-shaped opening position where the folding door 2 is held is set to the door plate 3
Although the angle β formed by the wood surface 8 and 9 of 4 and 4 is set to 50 °, this angle can be freely changed by changing the position of the recess 24.

[Effect of device]

As described above, according to the present invention, at the V-shaped opening position of the folding door, the slider convex portion causes the side surface in the closing direction to incline more gently than the side surface in the opening direction with respect to the front end surface, and at the same time the concave portion has the same inclination angle. Since the folds are formed and fitted together, at the V-shaped open position of the folding door, the side face in the opening direction of the protrusion abuts against the inner side face of the recess in a planar manner and is biased, so that the folding door swings in the folding direction. Can be regulated without. Therefore, even when the folding door is moved, the V-shaped opening position can be reliably held, and the folding door will not be carelessly folded. Of course, the closing of the folding door can be easily performed by using a gentle inclination angle. Therefore, it is possible to always prevent knocking or rattling when the folding door is moved. Furthermore, it is possible to suppress early deterioration of folding door components such as rails and runners during long-term use of the folding door.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which the hinge for folding door of the present invention is used.
FIG. 2 is a perspective view of a folding door using a folding door hinge, FIG. 3 is a top view of FIG. 2, and FIG. 4 is a perspective view showing the entrance of the folding door.
5 is a sectional view taken along the line I-I in FIG. 1 when the folding door is opened, and FIG. 6 is a sectional view taken along the line I-I in FIG. 1 when the folding door is opened.
FIG. 7 is a sectional view taken along the line II of FIG. 1 when the folding door is closed,
8 to 11 are views for explaining the operation of the convex portion of the slider when the folding door shifts to the state of holding the V-shaped open position and when the state of holding the V-shaped open position is released. is there. 1 ... Hinge for folding door, 2 ... Folding door, 6, 7 ... Mounting plate 6a, 6b, 7a, 7b, 7c ... Pin holding member 18 ... Shaft support pin, 20 ... Slider 20a. 20c, 20d …… side surface, 22 …… spring (biasing member), 24 …… recessed portion, 24a, 24b …… inside surface

Claims (1)

(57) [Scope of utility model registration request] 1. A pair of mounting plates rotatably connected to each other by a shaft pin and a pin holding portion are mounted on each pair of door plates,
In a hinge for a folding door that connects the door plates in an openable and closable manner, one mounting plate is provided with a slider having a convex portion and is biased in a direction orthogonal to the pin holding portion of the other mounting plate, and the other mounting plate. The pin holding portion is provided with a concave portion that fits into the convex portion at the V-shaped opening position of the folding door, and the convex portion has a side surface angle in the opening direction of the folding door with respect to a front end surface of the convex portion. The hinge for a folding door is characterized in that it is formed smaller than the above, and both inner side surfaces of the concave portion are inclined at the same angle as both side surfaces of the convex portion.