JP3082909B2 - Biaxial hinge for folding door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biaxial hinge for a folding door which is provided with three blades in a substantially U-shape between adjacent door plates of a folding door such as a partition interior or furniture and is rotated by two shafts. Belonging to the technical field.

[0002]

2. Description of the Related Art Hitherto, as a hinge for a folding door, for example, those shown in FIGS. 12 and 13 are known.

This conventional biaxial hinge for folding doors has a cross section having a blade b which is driven and fixed to an end face of an adjacent door plate a, and a cylindrical shaft portion which rotatably supports the both blades b. It comprises a substantially U-shaped rail bearing c and a fixing screw d screwed to the shaft of the rail bearing c.

[0004]

In the above-described conventional double-door hinge for a folding door, the door plate a and the rail-shaped bearing c are separated and approach by opening and closing the door plate a.
There is a problem that a hand may be trapped between the rail and the rail-shaped bearing c. Further, since the rotation of the blade b is supported only by the shaft, there is a problem that the rotation of the blade b becomes unstable.

The present invention has been made in consideration of the above problems, and has as its object to provide a folding hinge for a folding door in which a hand is prevented from being pinched when the folding door is opened and closed.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, a biaxial hinge for a folding door according to the present invention employs the following means.

That is, according to the first aspect of the present invention, there is provided a biaxial hinge for folding doors in which three blade plates are provided in a substantially U-shape between adjacent door plates and are rotated by two shafts. A pair of second blade plates which are rotatably supported at both ends of the first blade plate and are respectively attached to and fixed to the end surfaces of the adjacent door plates. The space is provided with a holding mechanism including a block and a catch for holding the closed position of the pair of second blades in a posture, and the catch is opposed to an elastic body provided in the block and a rotating tip of the second blade. And a cam that engages with and disengages from the elastic body.

According to this means, when the closed state of the folding door is held by the locking of the catch of the holding mechanism, the cam is caught by the elastic body at a position away from the rotation fulcrum of the pair of second blade plates. Thereby, the closed state of the folding door is maintained.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a biaxial hinge for a folding door according to the present invention; FIG.

FIG. 1 and FIG. 2 show the basics (1) of an embodiment of a biaxial hinge for a folding door according to the present invention.

In this embodiment, a first blade plate 1 and both ends of the first blade plate 1 are rotatably supported at respective ends thereof, and are respectively attached to and fixed to end surfaces of adjacent door plates 2. And a second pair of second slats 3. That is, the first blade plate 1 and the second blade plate 3 are connected by the two shafts 8. The second blade plate 3 has a screw hole 3 ′ drilled therein and is fixed to an end face of the door plate 2 by a screw 20.

According to this embodiment, the second blade 3
Is always in contact with the end face of the door plate 2, and no gap is formed between the end face of the door plate 2 and the hand. Therefore, the hand is prevented from being caught in the opening and closing operation of the folding door. .

FIGS. 3 to 7 show the basics (2) of the embodiment of the biaxial hinge for a folding door according to the present invention.

This embodiment is different from the above-mentioned embodiment (1) in that a holding mechanism 4, an adjusting mechanism 5, and a guide mechanism 12 are additionally provided.

The holding mechanism 4 is made of a synthetic resin such as polyacetal or the like, which is integrally provided on each of the pair of second blade plates 3 and an elastic piece 6 which is an elastic body fixed to the first blade plate 1. And a catch with a cam piece 7 which is a cam.

The elastic piece 6 is manufactured, for example, by bending a single elastic plate material into a U-shape and then bending both ends in an arc shape. The elastic piece 6 has its central portion and the like fixed to the inner side surface of the first blade plate 1 by screws or the like, and its arc-shaped tip portion has the first blade plate 1 and the second blade plate 3.
Thus, it becomes a shape projected toward the substantially U-shaped space Q formed by the above.

The cam piece 7 has a cylindrical shape with a part of the outer surface protruding, and is formed integrally with the second blade plate 3. The cam piece 7 is rotatably supported by the shaft 8 and rotates integrally with the second blade plate 3.

The adjusting mechanism 5 is composed of a screw 11 provided on a surface of the metal block 9 fixed to the first blade 1 toward the space Q and in contact with the second blade 3. The screw 11 is screwed into a screw hole 9 a provided in the width direction of the block 9 (the direction in which the pair of second blade plates 3 face each other).
The head 10 comes into contact with the second blade 3. Therefore, the amount of protrusion of the head 10 from the block 9 can be adjusted by adjusting the screwing of the screw 11. In addition, the back side of the block 9 is formed narrow in order to secure the mounting pace of the elastic piece 6 and the cam piece 7.

The guide mechanism 12 is configured to be mounted on the upper part of the door plate 2 and includes a first guide fitting 15 and a second guide fitting 17.

The first guide fitting 15 is provided with the second blade 3
An arc-shaped long hole 14 is provided in which the upper end of the shaft 13 pivotally supported at the turning tip of the shaft is loosely fitted. The position of the arc-shaped long hole 14 coincides with the rotation locus of the shaft 13.

The second guide fitting 17 is provided for the second blade plate 3.
A linear elongated hole 16 into which the upper end of a shaft 13 pivotally supported at the turning tip of the shaft is loosely provided. The position of the linear elongated hole 16 coincides with the rotation radius range of the shaft 13. The second guide member 17 is slidably mounted on the first guide member 15.

It is to be noted that, for example, an elongated hole is formed in the first guide fitting 15 (two-dot chain line in FIG. 4), and a protruding pin is provided on the inner surface of the second guide fitting 17 so that the first guide fitting 15 is formed. The sliding operation of the second guide fitting 17 with respect to the above can be made smooth and reliable.

According to this embodiment, when the folding door is closed and the door plates 2 are aligned flush, the pair of second blade plates 3 become parallel. At this time, the second blade plate 3 (door plate 2) rotates smoothly and reliably without rattling by the guidance of the guide mechanism 12, and the second blade plate 3 comes into contact with the block 9 and is more than necessary. Rotation is prevented. The parallel state of the pair of second blade plates 3 is held by the elastic locking of the catch including the elastic piece 6 and the cam piece 7 of the holding mechanism 4. Therefore, the block 9 also has a function as the holding mechanism 4.

If a meandering state is formed in which the door plate 2 is not aligned flush even when the folding door is closed, the protrusion of the head 10 of the screw 11 of the adjusting mechanism 5 can be adjusted.
Can be aligned flush.

Therefore, by adding the holding mechanism 4, the adjusting mechanism 5, and the guide mechanism 12 to the basic (1) of the above-described embodiment, it is possible to suppress the noise and the rattling and to make the folding door smooth and smooth. Reliable opening and closing is achieved. Further, since the holding mechanism 4, the adjusting mechanism 5, and the guide mechanism 12 are compactly assembled to the first blade plate 1 and the second blade plate 3, the holding mechanism 4, the adjusting mechanism 5, and the guide mechanism 12 The mounting work is easier and the manufacturing cost is lower than when separately provided between the two.

In this embodiment, packings 40 and 41 are provided on the end surface of the door plate 2 to absorb the impact of the door plate 2 when the folding door is closed and to improve the appearance of the joint of the door plate 2. ing.

FIGS. 8 and 9 show an embodiment (1) of a biaxial hinge for a folding door according to the present invention.

In this embodiment, the catch of the holding mechanism 4 is constituted by an elastic body comprising an elastic slider 6 'and a cam comprising a cam piece 7'.

The elastic slider 6 ′ has a pair of sliders 6 a ′ accommodated slidably from the front surface thereof in slide holes 90 formed substantially diagonally in the front surface of the block 9, and a pair of sliders 6 a ′ from the front surface of the block 9. It comprises a spring 6b 'that urges and presses so as to protrude, and a stopper 6c' that prevents the slider 6a 'from coming off the block 9.

The cam piece 7 'is formed in a sickle shape at a position corresponding to the slider 6a' at the tip of the rotation of each of the pair of second blades 3 by a member different from the second blades 3 and fixed. And is supported by the shaft 13 together with the second blade plate 3.

According to this embodiment, since the catch of the holding mechanism 4 is located away from the shaft 8 which is the rotation fulcrum of the second blade plate 3, the catch of the second blade plate 3 (door plate 2) is formed. The holding force in the closed position increases.

FIGS. 10 and 11 show an embodiment (2) of a biaxial hinge for a folding door according to the present invention.

This embodiment is a modification of the above-described embodiment (1) in the configuration of the elastic body and the cam.

The elastic slider 60 includes a slider 61 slidably housed in a slide hole 91 formed substantially at the center of the block 9 in the vertical direction (vertical direction of the door plate 2), and a locking portion 61a of the slider 61. 9 and a spring 62 which urges elastically so as to protrude from the front surface. On the front side of the block 9 of the slide hole 91, a retaining portion 92 for preventing the slider 61 from coming off from the block 9 due to the urging force of the slider 61 is provided.

The cam piece 70 is opposed to the rotating tip of each of the pair of second blade plates 3 at a position corresponding to the slider 61 when forming a substantially U-shape.
It is formed in a sickle shape by a separate member and fixed.

According to this embodiment, the catch of the holding mechanism 4 is such that the pair of sliders 61 is simultaneously caught with respect to the slider 61 biased by the single spring 62. It is required to be done at the same time. As a result, similarly to the above-described embodiment (3), the second blade plate 3 is located away from the shaft 8 which is the rotation fulcrum of the pair of second blade plates 3, and the rotation operation of the pair of second blade plates 3 is performed. Since the synchronism is required, the holding force of the pair of second blade plates 3 (door plate 2) at the closed position is further enhanced.

[0037]

As described above, the biaxial hinge for the folding door according to the present invention has a structure in which the second blade plate is always in contact with the end surface of the door plate, and the hand is sandwiched between the end surface of the door plate. Since the gap is not formed, the hand is prevented from being trapped in the opening / closing operation of the folding door.

Further, by providing the holding mechanism on the folding door biaxial hinge, it is possible to suppress the noise and rattling, thereby enabling the folding door to be opened and closed smoothly. In particular, by enhancing the catching force of the holding mechanism, the posture holding force when the folding door is closed is increased, so that the sound when the folding door is closed,
There is an effect that suppression of rattling is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mounted state showing a basic (1) of a biaxial hinge for a folding door according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a perspective view showing a basic state (2) of a biaxial hinge for a folding door according to the present invention, showing an attached state.

FIG. 4 is an enlarged exploded perspective view of a portion A in FIG. 3;

FIG. 5 is a cross-sectional view of the assembled state of FIG.

FIG. 6 is a plan view of a main part showing an operation state of FIG. 5;

FIG. 7 is a plan view of a main part showing another operation state of FIG. 5;

FIG. 8 is an exploded perspective view showing an embodiment (1) of a biaxial hinge for a folding door according to the present invention.

9 is a cross-sectional view of the assembled state of FIG.

FIG. 10 is an exploded perspective view showing an embodiment (2) of a biaxial hinge for a folding door according to the present invention.

11 is a cross-sectional view of the assembled state of FIG.

FIG. 12 is a perspective view showing a conventional example.

FIG. 13 is a cross-sectional view of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 first blade plate 2 door plate 3 second blade plate 4 holding mechanism 5 adjustment mechanism 6 elastic piece (elastic body) 6 ′, 60 elastic slider (elastic body) 7, 7 ′, 70 cam piece (cam) 9 block 12 Guide mechanism Q (substantially U-shaped) space

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) E05D 3/06 E05D 11/10 E05F 7/00 E06B 3/48

Claims (1)

(57) [Claims] 1. A folding bi-axial hinge for folding doors, in which three blades are provided in a substantially U-shape between adjacent doors and rotated by two shafts, a first blade and a first blade. And a pair of second blade plates which are rotatably supported at both ends of the respective door plates and abut on and fixed to the end surfaces of the adjacent door plates, respectively. A holding mechanism comprising a block and a catch for holding the closed position of the second blade plate and a catch is provided, and the catch is provided opposite to the elastic body provided on the block and the rotating tip of the second blade plate. A biaxial hinge for a folding door, comprising a cam that engages with and disengages from an elastic body.