JP2590809Y2 - Furniture hinge - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge for furniture.
More specifically, the present invention relates to an improvement relating to durability and the like of a furniture hinge in which two facing link plates are incorporated and a door is openably supported on a side plate of a furniture main body.

[0002]

2. Description of the Related Art Conventionally, as hinges for furniture, for example, those shown in FIGS. 5, 6 and 7 are known.

[0003] Conventional hinges for furniture shown in FIGS.
In the conventional example, a pivotable door B is attached to and supported on a side plate A of a furniture main body such as a system kitchen. A side plate-side mounting member 1 fixed to the side plate A and a door side fixed to the door B are provided. It comprises a mounting member 2 and two link plates 3 and 4 for connecting the side plate side mounting member 1 and the door side mounting member 2. Both link plates 3 and 4 are rotatably supported at both ends by shafts 5, 6, 7 and 8 supported by the side plate-side mounting member 1 and the door-side mounting member 2, and are arranged so as to face each other. I have. Further, one link plate 3 is formed by folding a part of both sides along the length direction to have a U-shaped cross section, and the other link plate 4 is formed in a flat plate shape having a slight bulge. I have. In this first conventional example, one link plate 3
The opening limit of the door B is regulated by the U-shaped folded piece 31 abutting on the shaft 8 that supports the other link plate 4 on the door-side mounting member 2.

The conventional hinge for furniture shown in FIG. 7 (second conventional example) has the other link plate 4 of the first conventional example formed into a mountain shape in the length direction and a plurality of the link plates 4 are superposed in a direction orthogonal to the length direction. There is a structure. In the first embodiment, a U-shaped central piece 32 of one of the link plates 3 is provided with a window hole 33 for avoiding an angle of the other link plate 4. Also in this second conventional example, the U-shaped folded piece 31 of one of the link plates 3 abuts on the shaft 8 that supports the other link plate 4 on the door-side mounting member 2, so that the door B
The opening limit of the is now regulated.

[0005]

In the above-mentioned first conventional example, the contact portion P of the link plates 3 and 4 at the opening limit of the door B becomes one point-like or linear-like portion. The opening and closing stress of B concentrates on the contact portion P, and the other link plate 4 of relatively flat plate shape is deformed by one of the U-shaped link plates 3 having relatively strong strength. Have. The deformation of the other link plate 4 changes the opening limit of the door B as shown in the deformation in the direction of the arrow from the two-dot chain line to the solid line in FIGS. Will also be impossible. In addition,
This buckling deformation naturally occurs when the door B is rapidly opened and a strong impact is applied, but also occurs due to long-term use with a weak impact.

In the second conventional example, buckling deformation as in the first conventional example is avoided due to the structure of the other link plate 4, but a plurality of other link plates 4 must be assembled respectively. Therefore, there is a problem that the manufacturing cost increases. Further, the other link plate 4
Has a problem that the door-side mounting member 2 must be enlarged in order to secure the rotation area of the other link plate 4 because of the mountain shape.

The present invention has been made in view of such problems, and provides a durable furniture hinge which can be manufactured inexpensively and in a small size and prevents damage to a link plate due to use. The task is to

[0008]

In order to solve the above-mentioned problems, the hinge for furniture according to the present invention employs the following means.

That is, a feature of the present invention is that the folded piece of one link plate is formed as a pressure receiving piece which is extended in an L shape on the side plate side mounting member side and does not abut against the other link plate, and is formed by the pressure receiving piece. The spring provided in the space of the side plate-side mounting member is resiliently pressed, the other link plate is formed to have substantially the same width along the length direction, and is disposed inside the U-shaped folded piece of one link plate, and Each of the link plates has a stopper projecting surface protruding from the substantially central portion along the length direction with a small piece-shaped area on both sides, and the central piece of one link plate and the other of the other at the opening limit of the door. When the link plate comes close to or comes into contact with the shaft insertion tube on the door-side mounting member side, the folded piece of one link plate comes into contact with the shaft of the other link plate on the door-side mounting member side. To so that, together and a stopper projection surface of the folded piece and the other link plates of the U-shaped one link plate lies in the into contact.

[0010]

In the opening limit of the door, the other link plate is housed inside the U-shaped folded piece of one link plate. On the door-side mounting member side, the center piece of one link plate and the other link are provided. Since the plate is brought into contact with or close to the shaft insertion cylinder and no spring or the like is interposed between them, the opening limit is as large as possible. In a state where the opening limit is not hindered, the folded piece of one link plate abuts on the axis of the other link plate.

Then, on the side plate-side mounting member side, the folded piece of one link plate abuts on the small piece stopper projection surface of the other link plate. Since the contact portion on the side plate-side mounting member side is located at a substantially central portion of the other link plate apart from the contact portion on the door-side mounting member side, the opening and closing stress of the door is dispersed. Further, the buckling deformation force concentrates on the substantially central portion of the other link plate having the substantially flat plate shape, but is prevented by the contact of the stopper projection surface. At this opening limit, the L-shaped pressure receiving piece of one of the link plates elastically presses the spring in the space of the side plate-side mounting member, and the posture is held.

[0012]

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

In this embodiment, basically, similarly to the above-mentioned first conventional example, the side plate side mounting member 1, the door side mounting members 2, 2
The adoption of a structure composed of a plurality of link plates 3 and 4 causes a problem of an increase in manufacturing cost and an increase in the size of the door-side mounting member 2 due to the assembly of the other link plate 4 in the second conventional example. Has been eliminated.

The side plate-side mounting member 1 is formed by folding both sides along the length direction to form a U-shaped cross section and fixed to the side plate A of the furniture main body.
1. A part of both link plates 3 and 4 is housed and assembled in a space 13 surrounded by a top plate piece 12. That is, one end side of both link plates 3 and 4 is pivotally supported by the two shafts 5 and 7 supported between the frame leg pieces 11. The space portion 13 is provided with a spring 9 for elastically pressing one end of one link plate 3.

The door-side mounting member 2 is formed in a cup shape and is embedded and fixed in a cup hole B 'provided on the inner surface of the door B. The space portion 2 surrounded by the side surface 21 and the bottom surface 22 is provided.
A part of both link plates 3 and 4 is accommodated and assembled to 3. That is, the two link plates 3,
The other end of 4 is pivotally supported. The space 23 also accommodates a part of the side plate-side mounting member 1 when the door B is closed (see FIG. 2).

One of the link plates 3 is folded on both sides along the length direction to form a U-shaped cross section, and a shaft insertion hole 34 formed in the folded pieces 31 on both sides of the U-shaped central piece 32. The shafts 5 and 6 are inserted through the shaft. Further, one end side (the side plate-side mounting member 1) of the folded piece 31 is a pressure receiving piece 35 which extends in an L shape and is elastically pressed by the spring 9.

The other link plate 4 is formed in a flat plate shape having a slight swelling, and the shafts 7 and 8 are inserted through shaft insertion cylinders 42 formed by bending both ends of a flat main body portion 41. It has become so. A stopper projection surface 43 is provided at a substantially central portion on both sides along the length direction of the main body portion 41 and has a certain area and protrudes laterally in a small piece shape. That is, the above-mentioned first conventional example can be easily remodeled by improving the components of the other link plate 4.

According to this embodiment, the door-side mounting member 2 (door B) can be opened and closed with respect to the side plate-side mounting member 1 (side plate A of the furniture main body) via both link plates 3 and 4. . When the door B is closed, the closed state is maintained by the elastic pressure of the spring 9 so that the door B is not unexpectedly opened. At the opening limit of the door B, the folded piece 31 of one link plate 3 is
Abuts on a shaft 8 that is pivotally supported by the door-side mounting member 2. further,
At the opening limit of the door B, the folded piece 31 of one link plate 3 is connected to the stopper projection surface 43 of the other link plate 4.
Will also be in contact. That is, both link plates 3,
The four contact portions P are located at two locations with a constant interval. The stopper projection surface 43 of the other link plate 4 comes into contact with the folded piece 31 of the one link plate 3 near the shaft 5.

For this reason, the opening / closing stress of the door B is dispersed at the two contact portions P, and the one-side link plate 3 having a relatively low strength is formed by the one-side link plate 3 having a relatively high strength. 4 will not be deformed. As a result, even if a strong impact is applied suddenly or the device is used for a long time with a low impact, the opening limit of the door B fluctuates due to the buckling deformation of the other link plate 4 and the door B cannot be correctly closed. It never happens. In addition, when the contact portions P are provided at two positions, the stress in the torsion direction of the link plates 3 and 4 can be countered, so that the load bearing performance is also improved.

Further, since the stopper projection surface 43 of the other link plate 4 has a constant area and one portion of the contact portion P is planar, the opening and closing stress of the door B is more effectively dispersed. At the same time, the pressure receiving surface against the impact is increased, and the impact resistance is improved.

Table 1 shows the results of the impact test of the product of this example and the first conventional product. In the impact test, a door provided with two each of the product of the present example and the first conventional product is applied at a position 30 degrees before the opening / closing limit as a starting point, a load is applied to the door immediately before the opening / closing limit, and the impact is repeated 10 times. After performing the test twice, the presence or absence of abnormality was examined.

[0022]

[Table 1]

From the results shown in Table 1, it was found that the link of the first conventional example was deformed in the first impact test and the door could not be closed. In the product of this example, the amount of change in the opening and closing angle due to the impact did not occur at all, and each part was normal in the disassembly test.

In addition to the illustrated embodiment, the other link plate 4 is not limited to a plate shape, but may have a structure in which folded pieces are provided on both sides along the length direction. In this case, it can be implemented by extending the portion corresponding to the stopper projection surface to both sides without folding.

[0025]

As described above, in the furniture hinge according to the present invention, the other link plate is disposed inside the U-shaped folded piece of one link plate, and the other link plate extends along the length direction. After providing a catch mechanism without interposing a spring or the like between the link plates on the door side, the stopper projection surface is formed in a small piece shape from both sides in the longitudinal direction of the other link plate having a substantially flat plate shape. By projecting with an area, the contact on the side plate side as well as on the door side can be ensured while keeping the opening limit large, and the concentration of the opening and closing stress of the door can be avoided. In particular, at the open limit, the buckling deformation force concentrates on the other link plate having relatively weak strength substantially at the center thereof,
The buckling deformation of the other link plate can be reliably prevented by contacting the stopper projection surface, which has the same width along the length direction and protrudes in the shape of a small piece, preventing damage to the link plate due to repeated use. This has the effect of improving the durability performance. In addition, this effect produces an effect that the opening / closing accuracy of the door is favorably maintained, and can cope with the strength condition accompanying the revision of the JIS standard.

Further, since the other link plate is assumed to be substantially flat with a bulge, the stopper projecting surface is formed in a small piece shape from the substantially central portion on both sides along the length direction of the flat plate. Since the structure is simple enough to protrude, there is an effect that it can be manufactured inexpensively and small.

Furthermore, since there is not much difference from the conventional structure except for the other link plate, there is an effect that the product can be easily incorporated into an existing product and modified.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a hinge of a furniture according to a first embodiment of the present invention, showing an opening limit of a door.

FIG. 2 is a sectional view taken along another cutting line of the door closed state of FIG. 1;

FIG. 3 is an enlarged perspective view of a main part (link plate) of FIG. 1;

FIG. 4 is a front view showing the operation of FIG. 3;

FIG. 5 is a cross-sectional view of a first conventional example, showing the limit of opening of a door.

FIG. 6 is a cross-sectional view showing an operation of a main part (link plate) of FIG.

FIG. 7 is a sectional view of a main part (link plate) showing a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side plate side attachment member 11 Frame leg piece 2 Door side attachment member 3 Link plate (one) 31 Folding piece 32 Central piece 35 Pressure receiving piece 4 Link plate (the other) 42 Shaft insertion cylinder 43 Stopper projection surface 5, 6, 7 , 8 axis 9 Spring A Furniture body side plate B Door P Contact part

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A 2-122869 (JP, U) JP-A 61-98170 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) E05D 3/06 E05D 11/06-11/10 E05F 1/12-1/14

Claims (1)

(57) [Scope of request for utility model registration] 1. A side plate-side mounting member fixed to a side plate of a furniture body and a door-side mounting member fixed to a door are rotatably connected by two link plates facing each other, and one of the link plates is long. A central piece and a folded piece are formed by folding both sides along the length direction to form a U-shaped cross section, and the other link plate is formed in a substantially flat plate shape, and a direct or indirect contact of both link plates is performed. In the hinge for furniture in which the opening limit of the door is regulated, the folded piece of one link plate is formed as a pressure receiving piece which is extended in an L-shape on the side plate side mounting member side and does not contact the other link plate. The spring provided in the space of the side plate-side mounting member is resiliently pressed by the pressure receiving piece, and the other link plate is formed to have substantially the same width along the length direction and is disposed inside the U-shaped folded piece of one link plate. It is,
The other link plate is provided with a stopper projection surface protruding with a small piece area on both sides from a substantially central portion along the length direction, and the center piece of one link plate is connected to the other at the opening limit of the door. When the link plate comes close to or comes into contact with the shaft insertion tube on the door-side mounting member side, the folded piece of one link plate comes into contact with the shaft on the door-side mounting member side of the other link plate, A hinge for furniture, wherein a U-shaped folded piece of one link plate is brought into contact with a stopper projection surface of the other link plate.