JP2565872Y2 - Door hinge structure - 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 structure of a door used for an archive, a partition, and the like, and more particularly, to a hinge structure of a door capable of increasing a door opening and smoothly opening and closing the door. About.

[0002]

2. Description of the Related Art Conventionally, a door for opening and closing an opening of a main body of a library or partition is hinged to the front of the main body via a hinge. Since the appearance of such a library or partition is required to be beautiful, the door is generally sized to cover not only the opening of the main body but also the vicinity of the outer edge of the front surface of the main body.
In particular, when a plurality of archives are arranged side by side such as a wall archive, the size of the door is determined so that a large gap is not formed between adjacent doors when the door is closed. Therefore, a hinge that can be smoothly and largely opened so that such a door does not interfere with the front of the main body or the door of an adjacent library, and does not hinder the drawer or storage of the inside of the main body. Requires a structure. In addition, a hinge structure that can support a large and heavy door so that it can be opened and closed without any trouble is required.

[0003] In order to satisfy the above requirements, a hinge structure is required which can first move the entire door forward of the main body when the door is turned in the opening direction. Therefore, some hinge structures have been proposed, but a typical one will be described. The hinge structure of the door disclosed in Japanese Utility Model Laid-Open Publication No. 63-89078 is composed of both ends of a mounting plate attached to a main body and hinge arms. Are connected to each other via a connecting plate to form a four-bar structure, and a door is rotatably supported at an extended end of the hinge arm via a pivot. According to this hinge structure, the hinge arm can be moved to the front of the main body by the four-bar link, and the door can be widely opened by rotating the door with respect to the hinge arm. On the other hand, the hinge structure of a door disclosed in Japanese Utility Model Laid-Open Publication No. 1-138080 discloses that one end of each of two connecting plates is connected to an attaching plate attached to a main body via two pins, and further, that both connecting plates are connected to each other. By connecting both ends of the lever plate to the other end via the respective pins, a four-bar link was formed, and the door was pivotally supported on one of the two pins connecting the lever plate and the connection plate. It has become something. Also in this hinge structure, the entire door can be moved forward of the main body by the operation of the four-bar link when the door is opened.

[0004]

However, in the two prior arts described above, in order to increase the opening of the door, the door is pivotally supported on one of the four-bar links, and the four-bar links are pivoted. Because it is configured to rotate independently of movement, the opening and closing operation of the door with respect to the main body is not constant,
There was a problem that it was difficult to operate. Also, since the door is only pivoted to one of the four-bar links via one pivot pin, it is difficult to secure sufficient support strength for a large and heavy door. There has been a problem that the door becomes difficult to move during use, and the backlash tends to occur.

Accordingly, it is an object of the present invention to provide a hinge structure of a door which can smoothly open and close the door while ensuring a large opening of the door.

[0006]

According to the present invention, there is provided a hinge structure of a door for opening and closing an opening on a front surface of a main body. A pair of bearings protruding from the front surface are provided, and one end of each of two connection plates is rotatably attached to each of the bearings via each of the first and second connection pins separated from each other. The hinge arm is rotatably attached to the other end of each of the third and fourth connection pins via each of the third and fourth connection pins separated from each other, thereby forming a four-joint link comprising the mounting plate, the two connection plates, and the hinge arm. The door is fixed to the hinge arm.

[0007]

According to the hinge structure of the door having the above construction, the door is fixed to the hinge arm which forms one of the four-bar links. Can be moved forward. Therefore, the door can be opened without interfering with the front of the main body or the door of an adjacent library or the like. In addition, since the door performs a unique opening / closing operation in accordance with the movement of the four-bar link, the door can be easily opened / closed, and the door can be smoothly opened / closed. In addition, the door is one of the four bar links
Since the hinge is fixed to the hinge arm, the support strength to the main body is increased, and a smooth opening and closing operation of the door can be maintained for a long time.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 8 show a first embodiment of the present invention, and FIG. Referring to FIG. 1, the library 1 includes a library main body 2 having a front opening, and a pair of left and right doors 3 for opening and closing a front opening of the main body 2.
3 is provided. In such a library 1, the doors 3 and 3 can be opened so that drawers in the main body or storages such as documents can be taken in and out.

FIG. 2 is a cross-sectional view of a main part of the lower part of the door 3 of the library 1 shown in FIG. 1 as viewed from above, and FIG. 3 is a side view of the upper and lower hinges 10, 10 of the door 3. FIG. 4 is an exploded perspective view of the hinge 10 which is a feature of the present invention. As can be seen from FIG. 3, the hinges 10, 10 are respectively mounted on the upper and lower sides of the door 3. Referring to these figures, the hinge 10 is provided with a mounting plate 11, the mounting plate 11 of the upper hinge 10 is mounted on the top plate 4 forming an opening of the main body 2, and the lower hinge 10 is It is attached to the bottom plate 5 of the main body 2. Since the structure of the upper and lower hinges 10, 10 is vertically symmetrical and has substantially the same configuration, only the lower hinge 10 will be described below, and the same reference numerals in FIG. The detailed description is omitted.

The mounting plate 11 has a spacer 12 and two bearings 13 and 14 vertically opposed to each other with the spacer 12 interposed therebetween. The bearings 13 and 14 are screwed so as to protrude forward from the front surface of the main body 2. At 15 it is attached to the bottom plate 5.

Upper bearing section 13 and lower bearing section 14
The two connecting plates 18, 19 are respectively disposed on the inner surfaces opposed to each other, that is, on the lower surface of the upper bearing portion 13 and the upper surface of the lower bearing portion 14 via first and second connecting pins 16, 17 which are separated from each other. Is rotatably mounted at one end. A hinge arm 20 is rotatably attached to the other end of each of the connecting plates 18 and 19 via third and fourth connecting pins 21 and 22 which are separated from each other.

In this embodiment, the hinge arm 20 is bent into a substantially U-shaped section so that the connecting portion 20a and the mounting portion 20b
The connecting portion 20a of the hinge arm 20 is connected to the two connecting plates 18 and 19 via the third and fourth connecting pins 21 and 22, respectively. The mounting portion 20b of the hinge arm 20 is fixed to a mounting plate 23 fixed to the inner surface of the door 3 with a screw 24.

As can be seen from the above description, the bearing 1
Mounting plate 11 having 3, 14 and two connecting plates 18, 19
And the connecting portion 20a of the hinge arm 20, a four-bar link is formed. In this embodiment, as described above, the two connecting plates 18 and 19 are disposed between the pair of bearing portions 13 and 14, and the connecting portion 20a of the hinge arm 20 is further provided between the two connecting plates 18 and 19. Is arranged,
The bearing portions 13 and 14, the connecting plates 18 and 19, and the connecting portion 20a of the hinge arm 20 overlap in the plate thickness direction. Further, the mounting portion 20b of the hinge arm 20 and the lower bearing portion 14 also overlap.

FIGS. 5 to 8 show the movement of the lower hinge 10 having the above-described structure in order. As can be seen from these figures and FIG. 2, according to the hinge 10 having the above configuration, the door 3 is fixed to the hinge arm 20 which forms one of the four-bar links. When the opening movement of the door 3 starts, the entire door 3 can be moved forward of the main body 2 as shown in FIGS. Therefore, the door 3 can be opened without interfering with the front of the main body 2 or the door of an adjacent library or the like (not shown). In addition, since the door 3 opens and closes uniquely according to the movement of the four-bar link, the door 3 can be easily opened and closed, and the door 3 can be smoothly opened and closed. Further, the bearing portions 13 of the mounting plate 11 forming the four-bar links,
14 and the two connecting plates 18 and 19 and the connecting portion 20a of the hinge arm 20 overlap each other in the thickness direction, so that each of the four-bar links interferes, as can be seen particularly from FIGS. The door 3 is turned about, for example, about 180 ° from the closed position (see FIG. 8).
It can be moved to the open position.

Further, since the door 3 is fixed to the hinge arm 20, which forms one of the four-bar links, via the mounting plate 23, the support strength of the door 3 with respect to the main body 2 is increased, and the door 3 is smoothly opened and closed. Operation can be maintained for a long time.

In particular, in the above embodiment, the connecting plates 18, 19 and the hinge arm 2 are located between the pair of bearings 13, 14.
No. 0 connecting portion 20a is arranged in a state where the gap is small and overlaps, and the mounting portion 20b of the hinge arm 20 and the lower bearing portion 14 also have a small gap and overlap.
Play and distortion are less likely to occur between them, which also contributes to an increase in support strength.

Further, in the above embodiment, the lower bearing portion 14 comes into contact with the inner surface of the bent portion of the U-shaped section of the hinge arm 20 to define the closed position of the door shown in FIG. Therefore, it is possible to prevent the door 3 itself from hitting the front surface of the main body 2 and damaging the front surface of the main body 2.

In the above, the principle of the present invention has been explained. However, in the case of a product such as the library 1, if a large gap is formed between the two doors 3, 3, the original function cannot be achieved. In addition, it is not preferable from the viewpoint of aesthetics, and the sales of products are affected. What is greatly related to the design problem of the size of the gap is the ratio of the length of each link of the four-bar links forming the hinge. Therefore, hereinafter, a second embodiment devised from the above viewpoint will be described with reference to FIGS. In the second embodiment, members corresponding to the members in the first embodiment are indicated by numbers obtained by adding 100 to the reference numbers of the members in the first embodiment.

The library 101 includes a main body 102 and two doors 10.
The doors 103 are attached to the main body 102 by hinges 110 having the configuration shown in FIGS. The hinge 110 is a mounting plate 111 for mounting to the main body 102 of the library 101.
It has. The mounting plate 111 is composed of two plate members, one of which is a bearing portion 113, which is a tip, is formed so as to protrude outward, and the other is a flat plate, and the tip thereof forms a bearing 114. ing.

A connection plate 118 is rotatably attached to the outside of the one bearing portion 113 via a connection pin 116. Another connecting plate 119 is rotatably mounted between the bearing portions 113 and 114 via connecting pins 117. Therefore, the connecting plate 118 and the mounting portion 11
3. The connecting plate 119 and the mounting portion 114 are assembled in this order so as to overlap each other in the thickness direction.

The connecting portions 120 of the hinge arm 120 are located between the distal ends of the two connecting plates 118 and 119.
a is connected to the connecting plate 118 via a connecting pin 121 and to the connecting plate 119 via a connecting pin 122,
It is attached so as to be rotatable around each connecting pin.
The door 103 is attached to the mounting portion 120b of the hinge arm 120.
Is attached. With the above configuration, a four-bar link is configured by the mounting plate 111, the two connecting plates 118 and 119, and the hinge arm 120. Further, the connecting portion 120a of the hinge arm 120 is provided with two connecting plates 118 and 11
9 so that it is in the same plane as one bearing 113 of the mounting plate 111, but as shown in FIG. 11, the hinge arm 120 has a notch 120c, Since the bearing portion 113 and the connecting portion 120a of the hinge arm 120 are separated from each other, the two members do not interfere with each other. Therefore, as shown in FIG. 10, each link can be overlapped, and there is an effect that the link can be largely rotated like the first embodiment.

FIG. 12 shows the hinge 110 shown in FIG.
3 shows a state where the screw member 152 is attached to the bracket member 150 of the door 103.
Thus, the mounting portion 120b of the hinge arm 120 is fixed. FIG. 13 is a longitudinal sectional view taken along line CC of FIG. 9, and the hinge 110 shown in FIGS. 10 to 12 is the lower hinge in FIG. Although the upper hinge has a vertically symmetrical form with respect to the lower hinge, it is essentially the same as the above-described hinge 110, and a description thereof will be omitted. Of course, it is also possible to move the lower hinge 110 in parallel upward and attach it to the upper part of the door 103.

As described above, the second embodiment is characterized by the dimensional ratio of the link and the like, and has the dimensional ratio shown in the plan view of FIG. 14 and the like. Is different from the ratio of the lengths of the links shown in FIG. That is, in the first embodiment,
The ratio of the length of each link is about 9: 5: 21: 23, but in the second embodiment it is about 9: 5: 36: 39, which is elongated.

FIGS. 14 to 16 show a state in which the door 103 is opened while drawing a locus uniquely defined by the operation of the hinge 110 according to the present invention. The trajectory of the tip of the hinge arm 120 is represented by L1 as a representative of the trajectory of the door 103 at that time. When the door 103 starts to open from the closed state of FIG. 14, the door 103 moves substantially perpendicularly to the main body 102 of the library 101 as indicated by a locus L1. After that, it opens 180 degrees while slightly moving in the left-right direction.

It is very important that the door 103 does not move in the left-right direction at the beginning of opening in the case of a double-opening door. That is, as described above, since the gap between the two doors is set to be small, if the doors move in the left-right direction, the two doors interfere and cannot be opened. If the door is opened to some extent, the door will turn obliquely, so that there is no interference even if the door moves a little left and right.

As shown in FIG. 16, when the door 103 is opened by 180 degrees, the main body 1 is more closed than when the door 103 is closed.
It has moved forward from 02 by the thickness of one door. For this reason, when the archives 101 are arranged side by side, when the door 103 of a certain archive 101 is opened, the door 1 of the next archive is opened.
It does not occur that 03A is in the way and cannot be opened. In the state of FIG. 16, the end 103 a of the side surface of the door 103 is in contact with the notch 119 a of the connecting plate 119.
It is designed to stop the opening movement of the door 103 when the door 103 is opened by 80 degrees. Therefore, the door 103 does not collide with the door 103A of the next library. Further, as in the first embodiment, the bearing portion 114 of the mounting plate 111 abuts on the inner surface of the U-shaped bent portion of the hinge arm 120 to define the closing position of the door 103. .

Although two embodiments have been described above, the present invention is not limited to only the above embodiments.
For example, it is easy to change the shape of each of the four bar links. Further, although the library 1 of the above embodiment is of a type in which the two left and right doors 3 open left and right, it may have a single door that opens only to the left, right or upward. In addition, the present invention is not limited to a library, and can be similarly applied to, for example, a partition, as long as it has a door.

[0029]

As is clear from the above description, according to the present invention, since the door is fixed to the hinge arm which forms one of the four-bar links, the opening of the door is started by the movement of the four-bar link. Sometimes the entire door can be moved forward of the body. Therefore, the door can be opened without interfering with the front of the main body or the door of an adjacent library or the like. Moreover,
Since the door performs a unique opening / closing operation in accordance with the movement of the four-bar link, the door can be easily opened / closed, and the door can be smoothly opened / closed. Furthermore, since the door is fixed to the hinge arm that forms one of the four-bar links, the strength of support for the main body is increased, and the smooth opening and closing operation of the door can be maintained for a long period of time. Therefore,
It is possible to provide a door hinge structure that can smoothly open and close the door while ensuring a large opening degree of the door.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a library using hinges according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of the library, as viewed from above a hinge at a lower portion of the library door shown in FIG. 1;

FIG. 3 is a longitudinal sectional view of a main part of the library, showing hinges at upper and lower portions of the library door shown in FIG. 1 viewed from the side.

FIG. 4 is an exploded perspective view of the lower hinge according to the first embodiment of the present invention;

FIG. 5 is an explanatory diagram of the operation of the hinge when the door starts to be opened.

FIG. 6 is an explanatory diagram of the operation of the hinge when the door is further opened.

FIG. 7 is an explanatory view of the operation of the hinge when the door is further opened.

FIG. 8 is an explanatory diagram of the operation of the hinge when the door is completely opened.

FIG. 9 is an overall perspective view of a library using hinges according to a second embodiment of the present invention.

FIG. 10 is a perspective view of a lower hinge of the library shown in FIG. 9;

FIG. 11 is an exploded perspective view of the hinge of FIG. 10;

12 is an exploded perspective view of a main part of a lower part of a door of the library shown in FIG. 9;

13 is a longitudinal sectional view of a main part taken along line CC of FIG. 9;

FIG. 14 is a cross-sectional view of a main part of the library shown in FIG. 9, taken along the line DD.

15 is an explanatory view of the operation of the hinge while the door is being opened from the state of FIG. 14;

16 is an explanatory diagram of the operation of the hinge when the door is completely opened from the state of FIG. 14;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Library 2 Main body 3 Door 10 Hinge 11 Mounting plate 13, 14 Bearing part 16 First connection pin 17 Second connection pin 18, 19 Connection plate 20 Hinge arm 20a Connection part 20b Mounting part 21 Third connection pin 22 Second 4 connecting pins

Claims (4)

(57) [Scope of request for utility model registration] 1. A hinge structure for a door which opens and closes an opening on a front surface of a main body, wherein a pair of bearing portions projecting from the front surface of the main body are provided on a mounting plate attached to the main body, and both bearing portions are spaced apart from each other. One end of each of the two connection plates is rotatably mounted via each of the first and second connection pins, and the third and fourth connection pins separated from each other are attached to the other end of each of the two connection plates. A hinge of the door, wherein the hinge arm is rotatably attached to the hinge arm to form a four-bar link with the mounting plate, the two connecting plates, and the hinge arm, and the door is fixed to the hinge arm. Construction. 2. The device according to claim 1, wherein the two connection plates are disposed between the pair of bearing portions, and a connection portion of the hinge arm is disposed between the two connection plates.
The hinge structure of the door described. 3. One of the two connection plates is disposed outside the pair of bearing portions, and the other is disposed between the pair of bearing portions, and faces one of the connection plates disposed outside. The hinge structure for a door according to claim 2, wherein a connecting portion of the hinge arm, which is separated from one of the bearing portions, is disposed between the two connecting plates. 4. The door according to claim 2, wherein the hinge arm has a bent portion at least one of the bearing portions comes into contact with the hinge arm to define a closed position of the door. Hinge structure.