JPS6310457Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is used for refrigerators, etc., in which the opening of the insulating box is opened and closed by double doors, and each door is equipped with a gasket for sealing. Regarding door devices.

(b) Prior art In order to keep the inside of the refrigerator airtight with gaskets provided on the backs of both doors, conventional refrigerators with double doors of this type have a gasket located on the non-pivot side of the door that contacts the surface. Therefore, a closing material was installed to partition the opening of the insulating box.
The gasket comes into contact with the front surface of this closing material to maintain airtightness inside the refrigerator, but this closing material has the disadvantage that it reduces the internal volume of the refrigerator and also obstructs the delivery of goods through the opening. .

Therefore, in the past, a single layer or multiple layers of tongues protruding outward were formed on the gasket located on the non-pivot side of both doors, and these tongues were brought into contact with each other to provide a seal between both doors. , thereby eliminating the aforementioned occluding material. However, such tongues have the disadvantage that their quality deteriorates due to friction caused by the opening and closing of the door, resulting in insufficient adhesion between the tongues and the loss of airtightness.

(C) Purpose of the invention The object of the invention is to provide a door device for a refrigerator, etc., which has a double-opening door and does not interfere with delivery of goods, and improves airtightness inside the refrigerator.

(d) Structure of the invention The invention uses first and second double-opening doors to close the opening of the insulating box, and each door is provided with a gasket on the periphery of the back surface thereof, which abuts against the periphery of the opening of the insulating box. , a first guide portion having a curved surface formed at the rear is formed protrudingly on the opening edge located on the non-pivot side of both doors, and a guide surface opposite to the curved surface is provided near the first door side of the first guide portion. a second guide portion is formed to protrude, and a support arm is attached to the non-pivot side portion of the first door;
The support arm has a length that spans the opening edge and is rotatable by extending in the direction of the rotation axis of the door, and when the first door is closed, the support arm enters the refrigerator and comes into contact with the guide surface of the second guide part. A partition body having a curved part that rotates and slidably matches the curved surface of the first guide part is attached, an elastic pressing member is attached to the support arm or the partition body, and the elastic pressing member is connected between the partition body and the support arm. An elastic force is always generated such that the partition body rotates to hold the partition body upright from the first door, or rotates in a direction in which the partition body is tilted toward the non-pivotal side of the first door. When the partition comes into contact with the guide surface and rotates toward the non-pivot side of the first door and exceeds a predetermined rotation angle, the partition is then rotated by the elastic pressing member. When the first door is opened, the partition body rises up from the first door and reaches a predetermined angle, and then is rotated by the elastic pressing member to open and close the first door. When the partition is aligned with the first guide part, the front of the partition is approximately flush with the opening of the insulating box, and the gaskets on the non-pivot sides of both doors are in contact with the front of the partition, creating an airtight seal inside the refrigerator. It was designed to maintain the

(e) Embodiment An embodiment of the present application will be explained with reference to FIGS. 1 to 6.
Reference numeral 1 denotes a refrigerator, and a heat insulating box body 5 with a front opening is constructed from an outer box 2 made of a steel plate, an inner box 3 made of molded synthetic resin, and a foamed heat insulating material 4 filled between the boxes 2 and 3. The opening 5 is closed by two double doors 7A and 7B which are rotatably supported on the left and right edges of the opening 5A of the heat insulating box 5 by upper and lower hinges 6A and 6B.
A can be opened and closed freely. FIG. 2 shows a front view of the heat insulating box 5. A plurality of net shelf rails 8 are integrally formed on the inner surfaces of both side walls of the inner box 3 and extend back and forth at approximately the same horizontal position. Doors 7A, 7B
First guide portions 9 are formed to protrude and face each other above and below the edge of the opening 5A of the heat insulating box 5 on the non-pivot side. This first
The guide portion 9 has a flat front surface that is substantially flush with the opening 5A, and a rear portion that has a semicircular curved surface 9A, for example.
It is said that Around the first guide part 9 of the upper and lower walls of the inner wall 3, a step part 10 is formed which is recessed in the direction of the slightly insulating material 4, and at the corner of the step part 10, the first guide part 9 is closer to the door 7A than the first guide part 9. A substantially triangular second guide portion 11 is formed at a distance from the portion 9 and protrudes vertically to face each other. The second guide part 11 has a guide surface 11A opposite to the curved surface 9A of the first guide part 9.
have.

Here, the first guide part 9 and the second guide part 11 may be molded integrally with the inner box 3, or may be attached as separate members.

A gasket 12 serving as a sealing member into which a magnet is inserted is attached to the periphery of the back surface of the doors 7A, 7B. This gasket 12 is the door 7A,
When the opening 7B is closed, the front edge of the outer box 2 at the opening 5A of the heat insulating box 5 is magnetized to seal the inside 13 of the refrigerator. A first support arm 14 is attached to a portion of the back surface of the door 7A located on the non-pivot side and located inside of the gasket 12A, which projects in the direction of the interior 13 of the refrigerator at two locations, vertically.
FIG. 4 shows an enlarged view of this first support arm 14 portion. A second support arm 15 is attached to the tip of the first support arm 14 so as to be horizontally rotatable on a support shaft 16, and a partition 17 is attached to the tip of the second support arm 15. A coil spring 19 as an elastic pressing member is attached to the support shaft 18 of the first support arm 14. One end of the coil spring 19 is in contact with the support shaft 20, and the other end is in contact with the support shaft 20.
9A is slidably pressed against the second support arm 15. On the other hand, a recess 21 is formed on one surface of the second support arm 15 that is in contact with the coil spring 19.
A protrusion 22 is formed that protrudes diagonally rearward at an angle of, for example, about 60 degrees when viewed from the 6th section. Similarly, the protrusion 22 has corner portions P ₁ and P ₂ formed at an angle of 45° and an angle of 75°, respectively. These coil springs 19, recesses 21, and protrusions 22 constitute a rotation biasing device. As a result, the second support arm 15 is tilted at an angle of 45 degrees counterclockwise in _FIG . It is rotated counterclockwise, and also rotated clockwise in Fig. 4, so that the inclination becomes 15° and the contact point with the end 19A is
Once the _P2 point is exceeded, the coil spring 19 will allow the coil spring 19 to rotate clockwise, and the coil spring 1
The end portion 19A of the arm 9 is stable in a state in which it is engaged with the recess 21 as shown by the two-dot chain line in FIG. do.

Here, the coil spring 19 may be provided not only on the first support arm 14 but also on the second support arm 15. In that case, a concave portion and a protrusion may be formed in the first support arm 14 based on the same principle.

The partition body 17 extends vertically with a length slightly smaller than the vertical dimension of the opening 5A, has a flat front surface, a curved corner portion at the rear end, and has first guide portions at the upper and lower ends. A curved portion 17A having a shape that slidably matches the curved surface 9A of 9 is recessed.

Next, the operation will be explained with reference to FIGS. 5 and 6. First, since the opening/closing operation of the door 7B is conventionally common, the explanation thereof will be omitted. Next, although the state in which the door 7A is open is not shown, at that time the end 19 of the coil spring 19
A is engaged in the recess 21, and the partition 17 is stabilized in the position shown by the two-dot chain line in FIG. 5 when viewed from the door 7A. At this time, since there is no member that partitions the opening 5A of the heat insulating box 5, the goods can be delivered easily. When the door 7A is closed in this state, the partition 17
enters the refrigerator interior 13, and eventually the rear corner of the partition 17 comes into contact with the guide surface 11A of the second guide section 11, and when the door 7A is further closed, the partition 17 touches the guide surface 11.
A, the first support arm 1 rotates counterclockwise in FIG. 6 against the elastic force of the coil spring 19.
4 and the second support arm 15 exceeds about 45 degrees, the coil spring 19 rotates the door 7A, and the door 7A can be easily closed.
At the same time as the curved portion 17A is closed, the curved portion 17A is positioned immediately behind the curved surface 9A of the first guide portion 9 and coincides with the curved surface 9A. This state is shown in FIG. At this time, the front surface of the partition 17 is substantially flush with the opening 5A, and the front surface of the partition 17 is substantially flush with the opening 5A, and the front surface of the partition 17 is substantially flush with the opening 5A.
Gaskets 12A, 12A of 7B are in close contact with the front surface of the partition 17 to airtightly seal the interior 13 of the refrigerator.

The partition body 17 may be made of synthetic resin or the like, but if only the front side is made of a magnetic material, the gaskets 12A, 12A will be in better contact with each other. or,
The width of the partition 17 is set in advance to be sufficiently larger than the distance between the gaskets 12A, 12A.

Next, when opening the door 7A, by pulling the door 7A toward you, the curved surface 17A of the partition 17 slides on the curved surface 9A of the first guide part 9, and the partition 17 resists the elastic force of the coil spring 19 to 5, the gasket 12A is rotated clockwise in the section shown in FIG.
Move further away. If the door 7A is further rotated in the opening direction, the angle between the first support arm 14 and the second support arm 15 will become smaller than about 15 degrees, and the partition body 17 will be rotated clockwise in FIG. 6 by the coil spring 19. After that, the door 7A is easily rotated and opened.

Here, the second guide portion 11 is provided on the upper and lower walls of the inner box 3, but it may be provided on either one. Further, the distance between the second guide part 11 and the first guide part 9 is determined by the partition body 17.
The structure shall be such that it can be smoothly passed through.

(F) Effects of the invention As described above, the present invention provides a method to provide a rear opening to the opening of a heat-insulating box of a refrigerator, etc., which is equipped with two double doors consisting of a first and second door, and which is located on the non-pivotal side of the door. A first guide portion having a curved surface and a second guide portion having a guide surface opposite to the curved surface are provided near the first guide portion, and both doors have gaskets around the back surfaces thereof respectively abutting against the opening edges of the heat insulating box body. A support arm is provided on the back surface of the non-pivot side of the first door, and a partition is rotatably provided on this support arm, and this partition extends in the direction of the rotation axis of the door to support the insulation box. The length extends to the edge of the opening, and a curved part is formed at the end of the partition located immediately behind the curved surface of the first guide part, so that the gaskets on the non-pivot sides of both doors are in close contact with the front surface of the partition in this state. I made it to
By closing the first door, the partition body comes into contact with the second guide part and is located immediately behind the first guide part, and at this time, the gaskets of both doors come into close contact with the partition body, sealing the inside of the refrigerator, and When the first door is opened, the partition separates from the first guide part and is pulled out of the refrigerator, so it is necessary to provide a partition material, etc. on the insulating box so that the gasket on the non-pivot side of the door comes into contact with it. The entire opening surface of the insulated box can be used for delivering goods, improving usability, eliminating the need for the gaskets on the non-pivotal sides to come into contact with each other, and preventing deterioration due to aging and poor insulation. Such inconveniences can also be prevented.

Furthermore, a rotational biasing device is provided so that the rotational biasing device quickly rotates the partition, and the partitioning body is brought into close contact with the first guide portion, and the first door This also prevents the first part from opening half-open.
The door will now open and close smoothly.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention. Figure 1 is a perspective view of a refrigerator, Figure 2 is a front view of a heat insulating box, Figure 3 is a sectional view taken along line A-A' in Figure 1, and Figure 4 is a sectional view taken along line A-A' in Figure 1. The figure is an enlarged view of the first support arm, and Figures 5 and 6 are the first support arm.
It is a figure explaining opening and closing operation of a door. 5...Insulating box body, 7A, 7B...first and second
Door, 9...First guide part, 9A...Curved surface, 11...
...Second guide part, 11A...Guide surface, 12...Gasket, 14, 15...First and second support arms, 17...Partition body, 17A...Curved part, 19...
... Coil spring, 21 ... recess, 22 ... protrusion.

Claims (1)

[Scope of utility model registration request] first and second double-opening doors rotatably supported on both sides of the opening so as to close the opening of a heat insulating box body having an opening, and a periphery of the opening provided on the periphery of the back surface of both doors, respectively. a pair of first guide parts protruding from the opening edges located on the non-pivot sides of both doors with a rear curved surface; and a pair of first guide parts located near the first guide parts. a second guide portion formed with a guide surface facing the curved surface; a support arm attached to the back surface of the non-pivot side portion of the first door; and a support arm rotatably pivoted to the support arm. It extends in the direction of the rotation axis of the door with a length that almost spans the edge of the opening, enters into the refrigerator with the closing operation of the first door, comes into contact with the guide surface of the second guide part, and rotates. A partition body having a curved part located immediately behind the curved surface of the first guide part and a predetermined angle formed by the partition body and the support arm are held as a boundary in a state in which the partition body stands up from the first door. direction or the first
and a rotation biasing device that constantly generates an elastic force so as to rotate the door in a direction in which the door is tilted toward the non-pivotal side. A door device for a refrigerator or the like, characterized in that the gaskets on the ejector support sides of both doors are substantially flush with the opening and are configured to abut against the front surface of the partition.