JPH0796988B2 - Door device such as refrigerator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device such as a refrigerator in which an opening of a heat insulating box is opened / closed by a double-door type door and a gasket as a seal member is provided on the back surface of each door.

[0002]

2. Description of the Related Art Conventionally, a refrigerator having a double door of this type has a gasket located on the non-pivotal side of the door in order to keep the inside of the refrigerator airtight by a gasket provided on the back surface of the double door. There has been one in which a partition member that partitions the opening of the heat insulating box into left and right is attached as a blocking member for forming the contact surface. However, the presence of this partition member reduces the internal volume of the refrigerator, and in the state where one door is open, food cannot be taken in and out of the refrigerating room closed by the other door, and it interferes with the operation of taking in and out. There was a problem that.

In order to eliminate this inconvenience, conventionally, a single-layered or multi-layered tongue protruding outward is formed on a gasket located on the non-pivotal side of a double door, and both tongues are brought into contact with each other. At least there was a seal between the two doors.

In addition, for example, (i) actual exploitation Sho 57-15678
As shown in Japanese Patent Publication No. 6, a front opening of a refrigerating chamber is closed by two doors, and a center pillar that forms a sealing surface of the other door is installed in a door inner plate portion of one door, and the center pillar In a refrigerator having substantially semi-cylindrical seal members on the upper and lower edges, a semi-cylindrical receiving portion that fits into the semi-cylindrical fin portion of the sealing member, and a flat receiving portion that closely contacts the flat fin portion of the sealing member are provided. There is a receiver provided on the inner wall of the main body.

Further, (ii) as shown in Japanese Utility Model Laid-Open No. 57-156790, the refrigerating compartment door for closing the front opening of the refrigerator is divided into a first door and a second door into two parts, left and right,
On one door, on the side of the joint between the left and right doors, attach a middle pillar that serves as the packing receiving surface of the other door, and provide a dew receiving guide groove in the longitudinal direction on the inside surface of this middle pillar. There is a double door for a refrigerator that is located above the dew receiving recess of the refrigerator box.

[0006]

In the case where the two tongues are brought into contact with each other to seal the two doors, the tongues are worn by the friction between the tongues due to the opening / closing operation of the double door. There is a disadvantage that the tongue pieces are not sufficiently adhered to each other due to damage or breakage and the airtightness of the tongue pieces is impaired.

The central pillar of the refrigerator described in the publication (i) and the central pillar of the double door for a refrigerator described in the publication (ii) are not provided so as to be rotatable with respect to the door. Since the sealing surface is always fixed so that it faces a certain direction, there is a restriction on the opening and closing order of the left and right doors (that is, one of the doors with the center pillar is closed first and then the other. There is a restriction that you have to open the other door first, and then open the other door first, and then open the one door with the center pillar.) In this case, the center pillar hits the other door, causing damage to the other door. Further, due to the above-mentioned restrictions, the door opening and closing operations are unnecessarily performed when the food is taken in and out, the amount of outside air flowing into the storage chamber increases, and the temperature inside the storage chamber rises unnecessarily and the temperature inside the storage chamber reaches the desired temperature. There is a risk that the food quality may not be maintained due to the failure to maintain the temperature, or the temperature may rise.

In view of this, in the present invention, a partition body serving as an abutting surface of the seal members of both doors is rotatably pivoted on the back surface of the non-pivot side of one of the double doors of the double door type, and this partition is A protrusion and a recess for rotating the body and a rotation assisting device for assisting the rotation operation of the partition body are provided, and the rotation operation of the partition body can be surely performed while eliminating the above-mentioned restriction. An object is to provide a door device for a refrigerator or the like.

[0009]

DISCLOSURE OF THE INVENTION According to the present invention, there is provided a double-door type door that is rotatably supported on both sides of an opening of an insulating box having an opening so as to close the opening. A seal member provided on the peripheral edge of the back surface and in contact with the opening edge, and rotatably supported on the back surface of the non-pivot side portion of one of the doors so as to extend in the rotation axis direction of the door. An opening corresponding to the non-pivotal side of the door, which is provided on the back surface of the non-pivotal side of the partition or one of the doors, and a rotation assisting device for assisting the rotation of the partition. A guide portion for guiding is provided at an edge portion, and a concave portion having an entrance into which the guide portion enters is provided in the partition body.

[0010]

[Operation] By the rotation assisting device for assisting the rotation of the partition body,
During opening operation of one of the doors provided with a partition body, a part of the partition body is assisted when the partition body moves to an upright position with respect to the one door and when the door is closed. Since it is possible to assist the turning operation when the door moves to the sideward protruding position, it is easy to open and close the door, and the protrusion and the recess rotate the door. After the movement is smoothly started, the rotating operation of the partition body toward the specified position (that is, the standing position or the protruding position) becomes reliable.

[0011]

Embodiments of the present invention will be described below with reference to the drawings of FIGS. 1 is a refrigerator, and an outer box 2 made of steel plate
And an inner box 3 formed by molding a synthetic resin, and a foamed heat insulating material 4 filled between the two boxes 2 and 3 constitute a heat insulating box body 5 having an opening 5A on the front surface. The two hinged doors 7A and 6A, 6B on the left and right edges of the opening 5A,
7B rotatably pivots and these two double doors 7
The opening 5A is openably and closably closed by A and 7B.
FIG. 2 shows a front view of the heat insulating box 5. A plurality of shelf rails 8 extending in the front-rear direction are integrally formed on the inner surfaces of both side walls of the inner box 3 at substantially the same horizontal position.

First guide portions 9 are formed so as to face each other above and below the edge of the opening 5A of the heat insulating box 5 corresponding to the portions of the doors 7A and 7B located on the non-pivotal side. There is. The first guide portion 9 has a front surface that is flat and is substantially flush with the edge of the opening 5A of the heat insulating box body 5, and the rear portion thereof has, for example, a semicircular curved surface 9A. Around the first guide portion 9 on the upper and lower walls of the inner box 3, a step portion 10 slightly recessed in the direction of the heat insulating material 4 is formed, and at the corner of the step portion 10 and more than the first guide portion 9. The first guide portion 9 is provided on the door 7A side.
A substantially triangular second guide portion 11 is formed which is vertically spaced apart and protrudes upward and downward. The second guide portion 11 faces the curved surface 9A of the first guide portion 9 and faces the guide surface 1
Have 1A.

Here, the first guide portion 9 and the second guide portion 1
1 may be formed integrally with the inner box 3 or may be attached as a separate body.

A gasket 12 as a sealing member having a magnet inserted therein is attached to the peripheral portions of the back surfaces of the doors 7A and 7B. When the doors 7A and 7B are closed, the gasket 12 magnetizes the front edge of the outer box 2 of the opening 5A of the heat insulating box 5 to seal the inside 13 of the refrigerator. First support arms 14 projecting from the door 7A toward the interior 13 are attached to upper and lower portions of a portion located inside the gasket 12A located on the non-pivotal side of the back surface of the door 7A. FIG. 4 shows an enlarged view of the peripheral portion of the first support arm 14. First
A second support arm 15 is attached to the tip end side of the support arm 14 so as to be rotatable in the horizontal direction with respect to the support shaft 16, and a partition body 17 described later is attached to the tip end of the second support arm 15. Has been. In addition, the first support arm 14
A coil spring 19 as an elastic pressing member is attached to the support shaft 18 of the above, one end of the coil spring 19 contacts the support shaft 20 provided on the first support arm 14, and the other end 19A slides on the second support arm 15. Pressed freely.

On the other hand, on the one surface of the second support arm 15 (the upper surface of the second support arm 15 shown in FIG. 4) with which the other end 19A of the coil spring 19 comes into contact, a recess 21 for dropping the other end 19A is formed. A position adjacent to the concave portion 21 (the concave portion 2 is formed on the upper surface of the second support arm 15 shown in FIG. 4).
On the right side of 1), a protrusion 22 is formed to give the other end 19A of the coil spring 19 a repulsive force. In particular,
The projection 22 is formed with two corners P1 and P2, and a line connecting the corner P1 and the support shaft 16 and a corner P2.
The angle formed by the line connecting the support shaft 16 and the extension line extending to the right of the support shaft 16 perpendicular to the side of the partition body 17 from the support shaft 16 is approximately 45 ° and 75 °, respectively. ing. Also, these corners P1 and P2 are the second support arm 1
The other end 19 of the coil spring 19 is rotated by rotating 5
This is for determining the starting point when the counterclockwise repulsive force given to A in FIG. 4 is converted into the rotational moment of the second support arm 15. The coil spring 19, the recess 21, and the protrusion 22 constitute a rotation assisting device for assisting the rotation of the partition body 17 described later.

Here, the coil spring 19 is the first support arm 1.
There is no problem even if it is provided on the second support arm 15 instead of on the first support arm 14. In that case, the recess and the projection may be formed on the first support arm 14 by the same principle.

The partition body 17 partitions the opening 5A of the heat insulating box body 5 into right and left, and both doors 7A and 7B when the doors 7A and 7B are closed.
The first support arm 1 serves as a contact surface of the gasket 12A located on the non-pivotal side of A and 7B.
4 and a second support arm 15 pivotally support the door 7A. In particular, the partition 17 is the heat insulating box 5
Has a length slightly smaller than the vertical dimension of the opening 5A, extends in the vertical direction, has a flat front surface and curved rear corners. Curved portion 17 having a shape slidably matching the curved surface 9A of the
It is formed by recessing A.

Next, referring to FIGS. 5 and 6, the doors 7A, 7B
The operation of the partition body 17 will be described. First, since the opening / closing operation of the door 7B on which the partition body 17 is not provided is conventional in general, the description thereof will be omitted.

Next, in the state (not shown) in which the door 7A provided with the partition 17 is open, the coil spring 1
The other end 19A of 9 is engaged in the recess 21, and the partition 17 is stopped at the position shown by the chain double-dashed line in FIG. 5 as viewed from the door 7A. When this door 7A is open, the heat insulating box 5
A member that divides the inside of the container into left and right (that is, the partition 1 here)
Since 7) does not exist in the compartment 13, it is possible not only to open the door but also to close the door, so that articles can be easily taken in and out. When the door 7A is closed while the door 7A is open, the partition 17
The rear corners of the curved portion 17A formed at the upper and lower ends contact the guide surface 11A of the second guide portion 11. When the door 7A is further closed, the curved portion 17A is guided by the guide surface 11A, so that the partition body 17 is guided by the guide surface 11 of the second guide portion 11.
It rotates counterclockwise along A, and further counterclockwise from the position shown in FIG. 6 against the repulsive force of the other end 19A of the coil spring 19. When the angle formed by the extension line of the first support arm 14 extending to the inside of the refrigerator and the second support arm 15 reaches about 45 °, the other end 1 of the coil spring 19 is reached.
Since 9A is located at the corner portion P1, when the door 7A is further closed beyond this corner portion P1, it exceeds the portion that gives the coil spring 19 a repulsive force, so the other end 19A of the coil spring 19 is provided. The partition body 17 is further rotated counterclockwise by the repulsive force.

Due to the repulsive force of the coil spring 19, the door 7A
In addition to easily closing, the curved portions 17A formed at the upper and lower ends of the partition body 17 match the curved surface 9A of the first guide portion 9, and the front surface of the partition body 17 has the opening 5A of the heat insulating box 5. It becomes almost flush with the edge and stops. This state is shown in FIG. At this time, a part (part on the left side in the figure) of the partition body 17 projects outward from the gasket 12A of the door 7A, and the front surface of the partition body 17 is substantially flush with the opening 5A. The gaskets 12A, 12A located on the non-pivotal side of the compartments 7, 7B are in close contact with the front surface of the partition body 17 and the front surface of the first guide portion 9 as shown in FIG.

Here, the partition body 17 is made of synthetic resin,
By forming only the front surface of the partition body with a magnetic material, the adhesion between the gaskets 12A and 12A can be further improved. In addition, the width of the front surface of the partition body 17 is the gasket 12A,
It may be set in advance so as to be sufficiently larger than the interval of 12A.

Next, when the door 7A is pulled forward when the door 7A is opened, the curved portions 17A formed at the upper and lower ends of the partition body 17 are drawn.
Moves clockwise while hitting the curved surface 9A of the first guide portion 9, so that the partition body 17 rotates clockwise to the position as shown in FIG. 5 against the repulsive force of the other end 19A of the coil spring 19. The gasket 12A is separated from the contact surface (that is, the front surface) of the partition body 17. When the door 7A is further opened and the angle between the extension line of the first support arm 14 and the second support arm 15 reaches about 15 °, the other end 1 of the coil spring 19 is reached.
Since 9A is located at the corner P2, if the door 7A is further opened beyond this corner P2, the partition body 17 is rotated clockwise by the repulsive force applied to the other end 19A of the coil spring 19, and the door is closed. 7A, stop at the position as shown by the chain double-dashed line in FIG. Therefore, when the door 7A is opened until the angle formed by the extension line of the first support arm 14 and the second support arm 15 becomes about 15 ° or less, the repulsive force of the coil spring 19 easily rotates the door 7A in the opening direction. Can move.

Here, the second guide portion 11 is provided on the upper and lower walls of the inner box 3, but either one may be used. The distance between the second guide portion 11 and the first guide portion 9 is set so that the upper and lower end portions of the partition body 17 can pass smoothly.

[0024]

According to the present invention, in addition to opening and closing one of the doors pivotally supporting the partition body, the projection enters the concave portion to rotate the partition body, and the rotation assisting member is used as the partition body. The partitioning body can be reliably rotated toward a predetermined position in order to assist the rotation operation of the. In particular, by closing the one door and rotating the partition body, a part of the partition body projects to the side of the one door, and the front surface of the partition body is located on the non-pivotal side of the double door. The partition member for partitioning the opening of the heat insulating box body such as a partition member for abutting the seal member positioned on the non-pivotal side of these doors is attached to the heat insulating box body in advance. There is no need, the storage space inside the refrigerator is not narrowed by the partition member, and the entire opening of the heat-insulating box can be used as a food inlet / outlet port, improving the usability of the refrigerator. Moreover, in addition to eliminating the problem that the seal members are not sufficiently adhered to each other due to friction between the seal members and the airtightness is impaired as in the conventional case, the partition body is independent of the opening / closing operation of the other door. It is possible to open and close one of the provided doors.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a refrigerator of the present invention.

FIG. 2 is a front view of a heat insulating box.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged view of a peripheral portion of the first support arm.

FIG. 5 is a cross-sectional view for explaining the opening / closing operation of the first door.

FIG. 6 is a cross-sectional view for explaining the opening / closing operation of the first door, similar to FIG.

[Explanation of symbols]

 1 Refrigerator 5 Insulation box 5A Open 7A One door (first door) 7B The other door (second door) 9 Projection (first guide part) 11 Projection (second guide part) 12 Seal member (gasket) 17 Partitions 17A Recesses (Curved Part) 19 Rotation Auxiliary Device (Coil Spring) 21 Rotation Aid Device (Concave) 22 Rotation Aid Device (Projection)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiyuki Hanamure 180 Sakata, Odaizumi-cho, Ura-gun, Gunma Higashi Kyoyo Electric Co., Ltd. (72) Kaoru Kanemori 180 Sakata, Oizumi-cho, Gunma-gun, Tokyo Sanyo Electric Co., Ltd. (72) Inventor Yoshihiro Yamakawa 180 Sakata, Oizumi-cho, Ora-gun, Gunma Tokyo Sanyo Electric Co., Ltd. (56) Reference JP-A-57-73382 (JP, A)

Claims (1)

[Claims] 1. A double-door type door that is pivotally supported on both sides of the opening so as to close the opening of the heat-insulating box body having the opening, and an opening edge provided on the peripheral edge of the back surface of each door. A seal member that abuts, a partition body that is rotatably and pivotally supported on the back surface of the non-pivotal side portion of one of the doors and extends in the rotation axis direction of the door, and the partition body. Or a rotation assisting device that is provided on the back surface of the non-pivotal side portion of one of the doors and that assists the rotation of the partition body, and a guide portion for guiding the opening edge portion corresponding to the non-pivotal side of the door. A door device for a refrigerator or the like, characterized in that the partition body is provided with a recess having an entrance into which the guide portion enters.