JP2536333Y2 - Hinge for folding door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a hinge for a two-fold door used for a part that is connected to open and close with a two-fold door or the like.

[Prior Art] A hinge of this type is disclosed in Japanese Patent Publication No. 55-47191. As shown in FIG. 7, such a hinge is composed of a shaft support 2 'of one hinge piece 1' and a hinge piece 3 'of the other.
Is rotatably connected to a supporting member 4 'by a supporting shaft 5'. A cam plate 6 'is provided on one hinge element 1' around the supporting shaft 5 ', and the other hinge element 3' is provided. The ball 9 'is formed so as to elastically contact the outer peripheral surface of the cam plate 6' by a spring 8 'housed in a spring housing portion 7' provided in the above. When the other hinge piece 3 'is rotated with respect to one hinge piece 1' to open and close, the ball 9 'rolls, and the hinge piece 1' and the hinge piece 3 'are fully opened to be flat. In this state, the ball 9 'is locked in the positioning concave portion 10' of the cam plate 6 'so that the ball 9' is held fully open.

[Problem to be Solved by the Invention] In such a conventional example, when the hinge is fully opened, the ball 9 'is fitted into the positioning concave portion 10' of the cam plate 6 'to maintain the fully open state. There is a problem that the closed state is not maintained and the stability of the closed state is poor.

In order to maintain the closed state, it is conceivable to provide the cam plate 6 'with a positioning recess in which the fully closed ball 9' is fitted. However, if the two-fold door is held when fully closed, the two panels of the two-fold door overlap exactly when the door is fully closed, and the two-fold door swings and the hanging state of the two-fold door becomes stable. There is no problem.

The present invention has been made in view of the description, and the purpose of the present invention is when the ball is fitted in the fully closed state, the fully closed state is maintained, and the folding door is closed. It is an object of the present invention to provide a hinge for a two-fold door that can stabilize the hanging state of the door.

[Means for Solving the Problems] To achieve the above object, a hinge A for a double-folded door of the present invention.
Is connected rotatably with a pivot portion 2 of one hinge piece 1 and a pivot portion 4 of the other hinge piece 3 by a pivot shaft 5. A spring 8 housed in a spring housing 7 provided on the other hinge piece 3 with a cam plate 6 provided therearound.
A fully open positioning recess 10a in which the ball 9 is fitted in a fully opened state in a hinge in which the ball 9 is urged toward one hinge piece 1 and the ball 9 is elastically contacted with the outer peripheral surface of the cam plate 6 at The positioning recess 10b before full closing where the ball 9 fits before the full closing, and the ball 9 abuts in a state between before the full closing and the full closing and guides the ball 9 to fit into the positioning recess 10b before the full closing. The inclined surface 10c is provided on the outer peripheral surface of the cam plate 6.

[Operation] When the hinge A for the half-folded door is fully opened, the ball 9 is fitted into the fully-opened positioning concave portion 10a of the cam plate 6, and the fully-opened state is maintained, and when the hinge A for the half-folded door is closed to the fully closed state. The ball 9 is fitted in the positioning recess 10b before full closing of the cam plate 6 so that the state before full opening can be maintained. When the hinge A for two-fold doors is fully closed, the ball 9 rolls along the inclined surface 10c and can be fully closed. When the closing force is removed in this state, the ball 9 moves along the inclined surface 10c. 9 rolls and fits into the fully closed position positioning recess 10b to return to the fully closed state.

Embodiment One hinge piece 1 is formed of a metal such as iron or zinc by die casting or the like. As shown in FIG. 2, the hinge piece 1 is formed in a partially notched disk shape, and a recess 15 is provided over substantially the entire surface of the hinge piece 1 on the side opposite to the mounting surface 1a to be abutted on a panel or the like. A flange 16 is provided on the periphery.
An appropriate number of mounting holes 17 are formed in appropriate places of the hinge piece 1. On both sides of the hinge piece 1, a shaft support 2 is protruded,
A mounting notch 18a is provided between the pair of shaft supports 2. The cam plate 6 is formed in a substantially disk shape as shown in FIG. 4, and the mounting portion 18b of the cam plate 6 is fitted and mounted in the mounting notch 18b of the hinge piece 1. When the hinge A for the two-fold door is fully opened, the fully open positioning recess 10a into which the ball 9 described later fits and the ball 9 is fitted before the fully-closed hinge A for the two-fold door. It has a concave portion 10b and an inclined surface 10c on which the ball 9 is located between the front side and the fully closed state. The other hinge piece 3 is formed of a synthetic resin. As shown in FIG. 3, the hinge piece 3 is formed in a partially notched disk shape, and has a flange 20 on the periphery. The hinge piece 3 is provided with a mounting hole 22 at an appropriate position. The hinge piece 3 has a pair of shaft supports 4 protruding therefrom.
A plate housing 23 is provided between the pair of shaft supports 4. The pivot portions 2, 4 of one hinge element 1 and the other hinge element 3 are made to correspond to each other, and by inserting the pivot shaft 5 through the pivot portions 2, 4, a pair of hinge elements 1, 3 is formed. It is rotatably connected. At this time, the cam plate 6 is located in the plate storage portion 23. A convex vein portion 24 is provided at the center of the hinge piece 3, and a space-like spring storage portion 7 is provided inside the convex vein portion 24.
One end of the spring housing 7 is provided with a plate housing 23.
And the other end of the spring housing 7 is closed. A ball 9 is provided on the plate storage 7 side in the spring storage 7.
The ball 9 is urged by a spring 8 housed in a spring housing 7, and the ball 9 elastically contacts the outer peripheral surface of the cam plate 6. A spring insertion opening 11 is provided which communicates with the spring housing 7 from the side of the mounting surface 3a for mounting the hinge piece 3 on a panel or the like. The spring insertion opening 11 is formed to have a size in which the ball 9 can be inserted and the spring 8 can be compressed and inserted. When the spring 8 and the ball 9 are assembled, the ball 9 is inserted from the spring insertion opening 11 while the hinge piece 1 and the hinge piece 3 are rotatably connected to each other by the pivot shaft 5, and the compressed spring 8 is removed. The spring is inserted into the spring housing 7 through the spring insertion opening 11. The hinge A for a two-fold door configured as described above is used to rotatably connect the panel 25 of the two-fold door B as shown in FIG. Install the mounting surfaces 1a and 3a of the hinge pieces 1 and 3 of the hinge A
And is attached by inserting a screw through the mounting holes 17 and 22. At this time, even if the spring insertion opening 11 is present, it is closed by attaching it to the panel 25. When the folding door B is fully opened, the hinge A is fully opened as shown in FIG. At this time, the ball 9 is fitted in the fully-open positioning concave portion 10a of the cam plate 6, and is held in the fully-open state. When the folding door B is strongly rotated in the closing direction from this state, the ball 9 rolls on the outer surface of the cam plate 6, and when the folding door B is brought to a state immediately before being fully closed, as shown in FIG. 5B. As described above, the ball 9 is fitted into the fully closed positioning recess 10b, and this state is maintained. At this time, the half-folded door B is maintained in a state of being slightly opened while being fully closed, and even when the half-folded door B is closed, the two-folded door B is prevented from tilting. When a force is applied in a direction to close the double-folded door B from the state before the fully-closed state as shown in FIG. 5 (b), the double-folded door B is fully closed and the hinge A is shown in FIG. 5 (c). It becomes a fully closed state like this. At this time, when the ball 9 is positioned on the inclined surface 10c of the cam plate 6, and the force for completely closing the two-fold door B is removed, the ball 9 returns to the fully closed positioning recess 10b from the inclined surface 10c to be in a state before the fully closed state.

[Effects of the Invention] As described above, the present invention provides a fully-open positioning recess in which the ball fits in the fully open state, a positioning recess in front of the fully-closed position in which the ball fits before the fully closed state, and a position between the fully closed state and the fully closed state. An inclined surface is provided on the outer peripheral surface of the cam plate so that the ball abuts in the state and the ball is fitted in the positioning recess before full closing, so that when fully opened, the ball fits into the fully open positioning recess. Of course, the fully opened state is maintained, and when the ball is in the fully closed state, the ball fits into the fully closed positioning recess and the state before the fully closed state is maintained, and when the double-folded door is closed, the fully closed state is set. The ball can be stably suspended, and when fully closed, the ball can be rolled on the slope and fully closed, and when the closing force is removed in the fully closed state, the ball rolls along the slope. Into the positioning recess before fully closed It returns to the previous position.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are a plan view and a side sectional view of one hinge piece.
FIGS. 3 (a), 3 (b) and 3 (c) are a plan view, a side view and a front view of the other hinge piece, and FIG. 3 (d) is FIG. 3 (a).
3 (e) is a sectional view of FIG. 3 (a), and FIG.
The figure is an enlarged explanatory view of the same cam plate, and FIG.
(B) and (c) are cross-sectional views illustrating the operation of the hinge of the above, FIG. 6 is a perspective view of the same hinge used for a two-fold door,
7 (a) and 7 (b) are a sectional view and an exploded perspective view of a conventional example, wherein 1 is a hinge piece, 2 is a shaft support, 3 is a hinge piece, 4
Is a shaft support, 5 is a shaft, 6 is a cam plate, 7 is a spring housing, 8 is a spring, 9 is a ball, 10a is a fully open positioning recess, 10b is a fully closed positioning recess, and 10c is an inclined surface.

Claims (1)

(57) [Scope of request for utility model registration] A hinge portion of one hinge piece and a hinge portion of the other hinge piece are rotatably connected to each other by a pivot shaft, and a cam plate is connected to one hinge piece around the pivot shaft. Is fully opened in a hinge where the ball is urged toward one hinge piece by a spring stored in a spring storage portion provided on the other hinge piece and the ball is elastically contacted with the outer peripheral surface of the cam plate. In the fully open positioning recess where the ball fits in, the positioning recess before full closing where the ball fits just before full closing, and the ball abuts in the state between before full closing and fully closed and the ball is positioned before full closing A hinge for a two-fold door, comprising a cam plate provided with an inclined surface for guiding to fit into the cam plate.