JPH07120135A - Door open/closure device of double swinging type - Google Patents

Abstract

PURPOSE:To improve feeling of operation by reducing the sound and shock which are to be generated when a hinge pin comes into contact with a latch plate when a door is opened or closed. CONSTITUTION:An engaging groove 41a of a fixing plate 4 of a door 1 is made detachable with respect to a hinge pin 3a of a body 2 to be attached, and a latch plate 5a, wherein a latch groove 51a can be detached from the pin 3a, is axially mounted to the plate 4, and a rotation prevention connecting mechanism 6 is interposed between left and right latch plates to prevent the rotation of other latch plate in association with the rotation of the plate 5a in its rotation in a releasing direction. A locking groove 7a comprising a slide guide 71a and stopper 72a is formed in a swinging link 61a of the mechanism 6, and a locking pin 8a for limiting the rotation of the latch plate by engagement with the groove 7a is projected from the link 61a. In an open/closure device of the double swinging type having a symmetrical constitution as describe above, a shock absorber, e.g. a spring plate 11a, is disposed at a point of contact between the latch groove 51a of the plate 5a and the hinge pin 3a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing device which is attached to a body to be attached such as a refrigerator and which can be opened left and right.

[0002]

2. Description of the Related Art Conventionally, as a door to be attached to an attached object such as a refrigerator, a single-open type door has been generally provided on the market, but recently, in order to meet various needs of users, a left-right open door is provided. Possible doors are being offered to the market.

As an example of this type of conventional door opening / closing device of the left-right double-opening type, there is one shown in FIGS. Figure 7
Is a perspective view of the refrigerator with the left and right doors open
8 is an exploded perspective view of a main part, FIG. 9 is a plan view of the main part in a closed state, FIG. 10 is a plan view of the main part at the start of opening, and FIG. 11 is an enlarged plan view of the main part at the start of opening. 12 is an enlarged plan view of the latch plate, and FIG. 13 is a front view of the hinge pin.

Hereinafter, the left and right double-door type door opening / closing device according to the conventional example shown in the above drawings will be described.

Hinge pins 3 are provided above and below the left and right ends of a body (refrigerator body) 2 to which a door 1 that can be opened to the left and right is attached.
Projections a and 3b are provided (see FIG. 13). A fixed plate 4 is attached to the door 1, and the left and right ends of each fixed plate 4 are engaged with the engagement pins 4 by which the hinge pins 3a and 3b are detachably engaged.
1a and 41b are provided. Latch plates 5a and 5b (see FIG. 12) having latch grooves 51a and 51b formed near the left and right ends of the fixed plate 4 are rotatably attached via pivot shafts 52a and 52b. Latch plates 5a, 5
b shows the latch grooves 51a, 51b in the hinge pin 3a,
3b, which engages with and disengages with respect to 3b, so that the engagement causes the hinge pins 3a and 3b to engage with the engaging grooves 41a and 4 of the fixing plate 4.
It is designed to be restrained within 1b.

Between these two latch plates 5a and 5b,
A rotation-blocking connection mechanism 6 that interlocks with the rotation of one latch plate 5a (5b) in the restraint release direction and blocks the rotation of the other latch plate 5b (5a) is interposed. The rotation preventing coupling mechanism 6 includes a pair of swing links 61a and 61b pivotally attached to the fixed plate 4 near the latch plates 5a and 5b, respectively.
And a connecting link 62 connecting the ends of the swing links 61a and 61b.

The swing links 61a and 61b are respectively provided with slide guide portions 71a and 71b and stopper portions 72a and 72.
and substantially L-shaped lock grooves 7a and 7b are formed. Lock pins 8a and 8b that engage with the lock grooves 7a and 7b and restrict the rotation of the latch plates 5a and 5b are provided on the latch plates 5a and 5b, respectively.

FIG. 9 shows a state in which the door 1 is closed. When opening the door 1, pull the handle on the side to be opened. Then, as shown in FIGS. 10 and 11, for example, the latch plate 5a (5b) rotates around the pivot shaft 52a (52b) in the constraint release direction of the hinge pin 3a (3b), and the lock on the latch plate 5a (5b) is locked. The pin 8a (8b) moves toward the slide guide portion 71a (71b) of the lock groove 7a (7b) in the swing link 61a (61b). As a result, the swing link 61a (61b) is rotated to the left side (right side) which is the open end side of the door 1, so that the connecting link 62 is pulled in that direction, and the swing link 61b (61a) on the opposite side is pulled. ) Is also rotated to the open end side of the door 1. Then, the lock pin 8b of the opposite latch plate 5b (5a)
(8a) moves to the stopper portion 72b (72a) of the lock groove 7b (7a) in the swinging link 61b (61a), and rotation of the latch plate 5b (5a) is blocked. Then, the door 1 is opened with the hinge pin 3b (3a) as the center of rotation.

The same applies when the door 1 is opened on the opposite side. When the door 1 is closed, the operation is the reverse of the above.

[0010]

However, in the above-mentioned conventional door opening / closing device of the left-right double-opening type, when the door 1 is opened and closed, the hinge pin 3a (3b) and the latch plate 5a (5) are opened.
When b) abuts, a sound and a shock are generated, so that there is a problem that the operation feeling is not good.

The present invention has been devised in view of the above circumstances, and reduces the noise and shock generated due to the contact between the hinge pin and the latch plate when the door is opened and closed, thereby reducing the operation. It is an object of the present invention to provide a door opening / closing device that opens and closes to the left and right with a good feeling.

[0012]

A left / right double door type door opening / closing device according to the present invention is provided with a hinge pin at both left and right end portions of one of a door that can be opened left and right or an attached body to which this door is attached, and the other. Fixing plates having engaging grooves with which the hinge pins are releasably engaged are provided at both left and right ends of, and the hinge pins are releasably engaged by the latch grooves opened to the outside, and the hinge pins are engaged with the engaging plates. Latch plates to be restrained in the fitting groove are attached to both left and right ends of the fixed plate, and the rotation of the other latch plate is linked between the left and right latch plates by the rotation of one latch plate in the restraint release direction. A rotation-blocking connecting mechanism is provided to prevent the rotation-blocking connecting mechanism from a pair of swing links pivotally attached to the fixed plate in the vicinity of the left and right latch plates and a link linking these two swing links. Configured There is a lock groove in which a slide guide portion and a stopper portion are formed in a substantially L shape on one of the swing links or each of the latch plates, and the other is engaged with the lock groove to engage the lock groove. In a left-right double-door type door opening / closing device that is configured by projecting a lock pin that restricts rotation, a buffer portion is provided at the contact portion between the latch groove of each latch plate and each hinge pin. It is characterized by that.

The buffer portion may be, for example, a spring plate attached to the latch plate, or a through hole or a notch is formed near the edge of the latch plate to elastically deform the edge. Alternatively, it may be a sleeve or a resin or rubber sleeve having a cushioning property that is fitted onto the hinge pin.

[0014]

The noise and shock at the time of opening and closing the door are reduced by the buffer portion provided at the contact portion between the engaging groove of the latch plate and the hinge pin.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the left and right double door type door opening / closing device according to the present invention will now be described in detail with reference to the drawings.

First Embodiment FIG. 1 is an enlarged plan view of a main part showing the details at the open end side of the left and right double-sided door opening / closing device according to the first embodiment of the present invention, showing the state at the start of opening. 2 is an enlarged plan view of the latch plate.

In these figures, FIGS.
The same reference numerals as in FIG. 13 indicate the same parts or the same parts in the first embodiment. That is, 1 is a door, 2
Is an attached object (refrigerator main body) to which the door 1 is attached, 3a
Is a hinge pin projecting from the end of the mounted body 4 is a door 1
A fixed plate attached to the fixed plate 41, an engaging groove 41a provided at an end of the fixed plate 4, a latch plate 5a rotatably provided near the end of the fixed plate 4, and a reference numeral 51a for engaging and disengaging the hinge pin 3a. A latch groove formed in the latch plate 5a so as to be freely engaged; a pivot 52a for pivotally supporting the latch plate 5a on the fixed plate 4;
Reference numeral 6 denotes a rotation preventing coupling mechanism interposed between the latch plate 5a and the other latch plate (not shown), 61a denotes a swing link in the rotation preventing coupling mechanism 6, 62 denotes a coupling link, and 7a denotes a swing link 61a. Almost L-shaped lock groove formed, 7
1a is a slide guide portion forming a part of the lock groove 7a,
Reference numeral 72a is a stopper portion forming another part of the lock groove 7a, and 8a is a lock pin protruding from the latch plate 5a. The detailed structure is similar to that of the conventional example, and thus the description thereof is omitted.

A notch 10a is formed in a portion of the latch plate 5a that abuts the hinge pin 3a in the latch groove 51a, and a spring plate 11a as a buffer portion is fixed by a screw 12a corresponding to the notch 10a. This is a description of the left-side buffer section, but the right-side buffer section (not shown) is also symmetrically configured in the same manner.

When the door 1 is opened / closed, the hinge pin 3a does not directly contact the latch plate 5a, but contacts the spring plate 11a as a buffer portion, and the spring plate 11a elastically deforms to absorb sound and shock. Therefore, it is possible to reduce the noise and shock caused by the contact between the hinge pin and the latch plate, and improve the operation feeling.

Other operations are similar to those of the conventional example.

Second Embodiment FIG. 3 is an enlarged plan view of a latch plate in a left and right double door type door opening / closing device according to a second embodiment of the present invention.

5a is a latch plate and 51a is a hinge pin 3a.
The latch plate 5a is engaged and disengaged with a latch plate 5a (not shown).
Latch groove 52a is formed on the fixing plate, 52a is a pivot for pivotally supporting the latch plate 5a on the fixed plate, and 8a is a lock pin protruding from the latch plate 5a. The other structure is the same as that of the conventional example except for the points described below, and thus the description thereof is omitted.

A through hole 13a is formed in a portion of the latch plate 5a which abuts the hinge pin 3a in the latch groove 51a, and a front edge portion of the through hole 13a is formed as an elastically deforming portion 14a as a buffer portion. This is a description of the left-side buffer section, but the right-side buffer section (not shown) is also symmetrically configured in the same manner.

When the door is opened and closed, the hinge pin 3a abuts on the elastically deformable portion 14a of the latch plate 5a, and the elastically deformable portion 14a elastically deforms and absorbs sound and shock, so that sound and shock can be reduced. The operation feeling can be improved. Further, the structure is simpler than that of the first embodiment, and the cost can be reduced.

Third Embodiment FIG. 4 is an enlarged plan view of a latch plate in a left / right double door type door opening / closing device according to a third embodiment of the present invention.

5a is a latch plate and 51a is a hinge pin 3a.
The latch plate 5a is engaged and disengaged with a latch plate 5a (not shown).
Latch groove 52a is formed on the fixing plate, 52a is a pivot for pivotally supporting the latch plate 5a on the fixed plate, and 8a is a lock pin protruding from the latch plate 5a. The other structure is the same as that of the conventional example except for the points described below, and thus the description thereof is omitted.

A notch 15a is formed in a portion of the latch groove 5a of the latch plate 5a that abuts the hinge pin 3a, and the front edge of the notch 15a is formed as a cantilever type elastically deformable portion 16a as a buffer portion. There is. This is a description of the left-side buffer section, but the right-side buffer section (not shown) is also symmetrically configured in the same manner.

When the door is opened and closed, the hinge pin 3a abuts on the elastically deformable portion 16a of the latch plate 5a, and the elastically deformable portion 16a elastically deforms and absorbs sound and shock, so that sound and shock can be reduced. The operation feeling can be improved. Further, the structure is simpler than that of the first embodiment, and the cost can be reduced.

Fourth Embodiment FIG. 5 is an enlarged plan view of a main part showing the details at the open end side of the left and right double-sided door opening / closing device according to the fourth embodiment of the present invention, showing the state at the start of opening. 6 is a front view of the hinge pin.

In these figures, FIGS.
The same reference numerals as those in FIG. 13 indicate the same parts or the same parts in the fourth embodiment. That is, 1 is a door, 2
Is an attached object (refrigerator main body) to which the door 1 is attached, 3a
Is a hinge pin projecting from the end of the mounted body 4 is a door 1
A fixing plate attached to the fixing plate 4, 41a an engaging groove provided at an end of the fixing plate 4, 5a a latch plate rotatably provided in the vicinity of the end of the fixing plate 4, 51a engaging with a hinge pin 3a. A latch groove formed in the latch plate 5a so as to be freely engaged; a pivot 52a for pivotally supporting the latch plate 5a on the fixed plate 4;
Reference numeral 6 denotes a rotation preventing coupling mechanism interposed between the latch plate 5a and the other latch plate (not shown), 61a denotes a swing link in the rotation preventing coupling mechanism 6, 62 denotes a coupling link, and 7a denotes a swing link 61a. Almost L-shaped lock groove formed, 7
1a is a slide guide portion forming a part of the lock groove 7a,
Reference numeral 72a is a stopper portion forming another part of the lock groove 7a, and 8a is a lock pin protruding from the latch plate 5a. The detailed structure is similar to that of the conventional example, and thus the description thereof is omitted.

A resin or rubber sleeve 17a having a cushioning property is externally fitted to each hinge pin 3a as a cushioning portion. This is a description of the buffer on the left side,
The buffer portion on the right side (not shown) is also symmetrically configured in the same manner.

When the door 1 is opened and closed, the latch plate 5a does not directly contact the hinge pin 3a but contacts the sleeve 17a as a cushioning part, and the sleeve 17a absorbs sound and shock. The sound and shock caused by contact can be reduced, and the operation feeling can be improved.

In the above embodiment, the swing link 61 is used.
While the lock grooves 7a and 7b are formed in a and 61b, the lock pins 8a and 8b which engage with the lock grooves 7a and 7b are provided in the latch plates 5a and 5b, respectively. Alternatively, the lock pins may be formed on the latch plates 5a and 5b, and the lock pins may project from the swing links 61a and 61b. In the above embodiment, the hinge pin 3 is attached to the attached body 2 which is the refrigerator body.
Although a and 3b are projected and the fixed plate 4 is attached to the door 1, conversely, a hinge pin may be projected to the door 1 and the fixed plate may be attached to the mounted body 2.

[0034]

As described above, according to the present invention, in the door opening / closing device of the left / right double-opening type, the sound and shock generated due to the contact between the hinge pin and the latch plate at the time of opening / closing the door can be prevented. This can be reduced by the buffer portion provided at the contact portion between the engaging groove and the hinge pin, and the operational feeling can be improved.

[Brief description of drawings]

FIG. 1 is an enlarged plan view of a main part showing details at the open end side of a left and right double-sided door opening / closing device according to a first embodiment of the present invention and showing a state at the start of opening.

FIG. 2 is an enlarged plan view of a latch plate according to the first embodiment.

FIG. 3 is an enlarged plan view of a latch plate in a left / right double-door type door opening / closing device according to a second embodiment of the present invention.

FIG. 4 is an enlarged plan view of a latch plate in a left / right double door type door opening / closing device according to a third embodiment of the present invention.

FIG. 5 is an enlarged plan view of a main part showing details at the open end side of the left and right double-sided door opening / closing device according to the fourth exemplary embodiment of the present invention and showing a state at the start of opening.

FIG. 6 is a front view of a hinge pin according to a fourth embodiment.

FIG. 7 is a perspective view of the refrigerator according to the conventional example with the doors that can be opened to the left and right sides opened.

FIG. 8 is an exploded perspective view of a main part of a left and right double-sided door opening / closing device according to a conventional example.

FIG. 9 is a plan view of a main part in a closed state in a conventional example.

FIG. 10 is a plan view of a main part at the start of opening in a conventional example.

FIG. 11 is an enlarged plan view of a main part at the start of opening in the conventional example.

FIG. 12 is an enlarged plan view of a latch plate in a conventional example.

FIG. 13 is a front view of a hinge pin in a conventional example.

[Explanation of symbols]

 1 ... Door 2 ... Attached body (refrigerator main body) 3a, 3b ... Hinge pin 4 ... Fixing plate 5a, 5b ... Latch plate 51a, 51b ... Latch groove 52a, 52b ... Pivot axis 6 ... Rotation Blocking connection mechanism 61a, 61b ... swinging link 62 ... connection link 7a, 7b ... lock groove 71a, 71b ... slide guide part 72a, 72b ... stopper part 8a, 8b ... lock pin 10a ... notch 11a-Spring plate 12a-Screw 13a-Through hole 14a-Elastic deformation part 15a-Notch 16a-Elastic deformation part 17a-Sleeve

Claims (1)

[Claims] 1. A hinge pin is provided on both left and right ends of one of a door that can be opened to the left and right or a body to which the door is attached, and the hinge pin is releasably engaged with the other left and right ends of the door. Fixing plates having mating grooves are provided, and latch plates for engaging and disengaging the hinge pins by the latch grooves opened to the outside and restraining the hinge pins in the engaging grooves are provided at both left and right ends of the fixing plate. A rotation-blocking connecting mechanism is provided between the left and right latch plates, which is linked to the rotation of the one latch plate in the restraint release direction and blocks the rotation of the other latch plate. Is composed of a pair of swing links pivotally attached to the fixed plate in the vicinity of the left and right latch plates and a connecting link connecting the two swing links to each other. To The guide part and the stopper part are almost L
A left and right double door type door opening and closing device which is formed by forming a lock groove formed in a letter shape and projecting a lock pin that engages with the lock groove and restricts rotation of the latch plate on the other side, A door opening / closing device of a left-right double-opening type, characterized in that a shock-absorbing portion is disposed at a contact portion between each latch plate and each of the latch grooves of each latch plate.