JPH0571866B2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is applicable to refrigerators, etc., in which the opening of a heat insulating box body is opened and closed by double doors, and each door is provided with a sealing gasket on the back side of the door. Regarding door devices.

(b) Conventional technology In order to keep the inside of the refrigerator airtight with gaskets provided on the back side of both doors, conventional refrigerators with double doors of this type have a surface that the gaskets on the non-pivot side of the door come into contact with. 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. .

For this reason, in the past, for example, as in Japanese Utility Model Application Publication No. 55-52082, a single layer or multiple layers of tongues protruding outward are formed on the gaskets located on the non-pivot sides of both doors, and these tongues are The seal between the two doors was applied by bringing them into contact with each other, thereby eliminating the above-mentioned blocking material, but since the airtightness deteriorated significantly due to aging, the applicant proposed, for example, in Utility Model Application Publication No. 59-180188. As shown, a rotatable partition was attached to the door instead of the above-mentioned closing material. In addition, the applicant is
As shown in Publication No. 62-63692, a magnetic plate and a permanent magnet, which serve as holding members for holding the partition in a state along the vertical wall located on the non-pivotal side of the first door (in other words, in the initial state), are each used as a partition. It was buried in the storage member on the back of the body and the vertical wall of the first door. In addition, in 1987-
Publication No. 165796 discloses a double door for a freezer/refrigeration case in which a tension spring is provided on the pivot side of the door to always bias the double door in the closing direction.

(c) Problems to be solved by the invention With the configuration shown in Japanese Utility Model Application Publication No. 59-180188, the partition constitutes the contact surface of the gasket only when the first door is closed, and the partition body only forms the contact surface of the gasket when the first door is closed. When the first door is opened, it moves away from the opening edge together with the door, so it does not interfere with the delivery of parts, and the airtight performance is fully demonstrated. However, when the first door is open, the partition body faces the user Since the spring protrudes and maintains a rotated state at a certain point, there is a risk that the user's hand may come into contact with the spring and remain in the rotated state when delivering the item. Furthermore, if the partition rotates with the first door open and the door is closed, the door will not close due to the presence of the partition, and in the worst case, the partition will be damaged by the impact when it is closed. It has the disadvantage of causing In addition, the permanent magnet described in Japanese Utility Model Publication No. 62-63692 is buried in the storage member of the first door, and the magnetic plate is buried in the back of the partition, so the permanent magnet or magnetic plate is buried in the top, bottom, left, right, and cannot move freely in the depth direction, and the two may not be reliably attracted to each other. In other words, the foaming pressure when foaming the insulation material to the first door causes the vertical wall to bulge outward, and the shrinkage force of the insulation material during cooling operation of the refrigerator causes the door inner plate to be pulled toward the insulation material. Due to possible deformation of the vertical wall of the first door, installation error when attaching the partition to the first door, etc., the magnetic plate and the magnetized plane of the permanent magnet may not always be parallel, and the magnetic There was a problem in that the adhesion between the plate and the permanent magnet was insufficient and the partition could not be held in a state along the first vertical wall. Furthermore, since the tension spring disclosed in Japanese Utility Model Application Publication No. 165796/1988 and the parts to which this tension spring is attached have a complicated structure, the installation work is difficult when these parts are used to bias the partition body. , there was a problem that required a lot of installation space.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a door device for a refrigerator, etc., which is provided with a spring member that always biases the partition body to an initial state and a holding mechanism that keeps the front surface of the partition body substantially flush with the opening edge. do.

(d) Means for Solving the Problems The present invention provides a double door opening type first door 7A and a second door which are rotatably supported on both sides of the opening 5A of the heat insulating box body 5.
a door 7B, and a partition 25 rotatably attached to a vertical wall 19A provided on the back surface of the non-pivotal side portion of the first door 7A, having approximately the same length as the door and extending in the vertical direction; A guide member 15 is provided at the edge of the opening 5A located on the non-pivotal side of the first door 7A, and rotates the partition body 25 as the first door 7A opens and closes. A spring member 32 that is constantly biased to return to the state along the wall.
and a protrusion 28 provided on at least one of the upper and lower ends of the partition body 25 so as to be retractable.
and a spring 4 that urges this protrusion 28 in the projecting direction.
0, and a boss 41 and a recess 42 that maintain this state with the front surface 26 of the partition substantially flush with the edge of the opening 5A of the heat insulating box 5 by protruding the protrusion. The present invention provides door devices for refrigerators, etc. equipped with

(E) Effect According to the present invention, the spring member causes the partition body to
The door is constantly energized to return to the state along the vertical wall (that is, the initial state), but when the first door closes, the front surface of the partition becomes approximately flush with the edge of the opening of the insulation box. In the relaxed state (that is, the closed state), the coil spring 4
0. Since the boss 41 and the recess 42 bias the protrusion 28 of the partition in the protruding direction, the partition is held in this closed state against the biasing force of the spring member.

(F) Embodiment An embodiment of the present application will be explained with reference to FIGS. 1 to 6.
In Fig. 3, 1 is a refrigerator, which has an outer box 2 made of a steel plate, an inner box 3 made of synthetic resin, and a foam insulation material (not shown) filled between the boxes 2 and 3. Two double doors 7A and 7 constitute the box body 5 and are rotatably supported on the left and right edges of the opening 5A of the insulating box body 5 by upper and lower hinges 6A and 6B.
B allows the opening 5A to be opened and closed.
FIG. 2 shows a front view of the heat insulating box 5.
Guide members 15 are provided above and below the edge of the opening 5A of the heat insulating box 5 on the non-pivot side of each of the doors 7A, 7B so as to face each other.
The guide member 15 has a protrusion 9 at the front and a continuous jetty 10 at the rear.The protrusion 9 has a flat front surface and is substantially flush with the opening 5A, and a rear surface has a substantially semicircular curved surface. It is set to 9A. The jetty 10 is spaced apart behind the projection 9 and has a curved surface 10A on its front surface.
A guide groove 11 is formed between the opposing curved surfaces 9A and 10A.

FIG. 4 shows a plan sectional view of the opening of the refrigerator 1. Doors 7A, 7B are frame members 12A, 12B
and outer frames 14A, 14B consisting of door outer panels 13A, 13B engaged therewith, and frame members 12A, 12B.
A door inner plate 18A, which is formed by abutting inner flanges 16A, 16B with peripheral outward flanges 17A, 17B,
18B, outer frames 14A, 14B, and door inner plate 18
Insulating material I filled with foam between A and 18B respectively
It is composed of. A pair of left and right vertical walls 19A, 19B are formed on the door inner plates 18A, 18B, respectively, and grooves 20 at the ends of the frame members 12A, 12B are formed.
A gasket G with a built-in magnet is attached to A, 20B, and its fin F is connected to the vertical wall 19A, 1 on the non-pivot side.
Closely attached to 9B. Gasket G is door 7
When A and 7B are closed, the front edge of the outer box 2 at the opening 5A of the heat insulating box body 5 is magnetized to seal the inside 21 of the refrigerator.

FIG. 1 shows a perspective view of the back side of the door 7A. A partition 2 having a substantially rectangular cross section is provided on the outside of the vertical wall 19A on the inside of the gasket G located on the non-pivot side of the back surface of the door 7A.
5 is attached. Reference numeral 24 denotes a hinge plate, which is attached to the insulation material I at two locations, upper and lower, on the outer surface of the vertical wall 19A.
It is fixed to the side reinforcing plate 23 with screws N, and the partition body 2
5 is rotatably supported on a rotation shaft 30 of this hinge plate 24. The partition body 25 has a length that extends approximately above and below the edge of the opening 5A, and is connected to the upper and lower guide members 15,1.
It extends vertically with a dimension slightly shorter than the interval between the guide grooves 11, 11 of No. 5, and the front surface is flat and a steel plate 26 is attached as shown in FIG. Further, projections 28, 28 as engaging portions are formed at the upper and lower ends thereof to protrude in the vertical direction, respectively. Further, 29 is a hole into which the shaft of the hinge 6A is inserted.

The hinge plate 24 is inserted into the partition body 25 through notches 31 formed at upper and lower portions in the rear corner of the partition body 25 on the door 7A side, and a rotation shaft 30 is positioned therein. A spring member 32 made of a coil spring is inserted through the spring member 32, and one end is connected to the hinge plate 24.
In addition, the partition body 2 whose other end is spaced apart from the rotation shaft 30
5, and their restoring force always urges the partition 25 to rotate clockwise as shown by the arrow in FIG.

When the door 7A is open, the partition body 25 is caused by the restoring force of the spring member 32 to tighten, for example, a screw N along the outer surface of the vertical wall 19A of the door inner plate 18A, as shown by the broken line in FIG. 1 or FIG. It is held in a state in which it is in contact with (initial state). In this initial state, even if the user's hand accidentally hits the partition 25 and is rotated counterclockwise in FIG. 4, the spring member 3
2, it is immediately returned to the initial state.
This operation is performed regardless of the rotation angle of the partition 25, so if the door 7 is accidentally opened while the partition 25 is being rotated,
A is closed and the partition 2 is attached to the protrusion 9 of the guide member 15.
Accidents in which the protrusion 28 of No. 5 collides and is damaged can be reliably prevented.

Next, when the door 7A is closed, the partition body 25
The protrusion 28 enters into the guide groove 11 and comes into contact with the curved surface 10A of the jetty 10. As the door 7A is further closed, the protrusion 28 slides on the curved surface 10A, and accordingly, the partition 25 is rotated counterclockwise in FIG. 4 about the rotation axis 30 against the spring member 32. The protrusion 28 penetrates into the inner part of the guide groove 11.

FIG. 5 shows a plan sectional view of the base of the projection 28. A holding part 3 as a holding mechanism is provided on the bottom of the middle part of the guide groove 11.
5 is formed. The holding portion 35 has a U-shaped cut groove formed on the bottom surface of the guide groove 11, and is formed to elastically descend downward, and its upper surface is shaped such that its front and rear sides are inclined toward the top portion 36. door 7
As the protrusion 28 enters the guide groove 11 with the closing operation of A, it eventually climbs over the top 36 of the holding part 35, and the top 36 lifts upward and comes into contact with the side of the protrusion 28, causing the protrusion 28 to move into the fifth position. It is held in the inner part of the guide groove 11 as shown in the figure. Therefore, in this state, the partition body 25 resists the restoring force of the spring member 32 and the steel plate 26 on the front side of the partition body 25
is substantially flush with the opening 5A, forming the magnetized surfaces of the gaskets G and G of the doors 7A and 7B, and is stably maintained, thereby sealing the opening 5A. This state is shown in FIG. Conversely, when opening the door 7A, the protrusion 28 climbs over the top 36 of the holding part 35 and is rotated clockwise in FIG. 4 along the curved surface 10A of the jetty 10 by the restoring force of the spring member 32, and eventually Return to initial state.

Next, FIG. 6 shows how the partition 25 is connected to the opening 5 of the insulation box 5
FIG. 7 is a longitudinal cross-sectional view of the lower end of the partition body 25 and the guide member 15 to show another embodiment of the holding mechanism that maintains the holding mechanism in a state substantially flush with A (hereinafter, this state is referred to as a closed state). In this embodiment, the protrusion 28 is housed in a recess formed at the lower end of the partition body 25 by a coil spring 40 attached to the recess such that it can freely move in and out of the recess. A boss 41 is formed at the lower end of the projection 28, and the front surface of the partition 25, that is, the steel plate 26 is formed in the guide groove 11 of the guide member 15 so that the front surface of the partition 25 is substantially flush with the opening edge 5A of the heat insulating box 5 (i.e., it is closed). recess 4 into which the boss 41 falls when rotated to the state)
2 is formed. The coil spring 40 has a protrusion 28
When the boss 41 of the guide member 15 is in contact with the bottom surface of the guide groove 11 of the guide member 15, the projection 28 is always urged in the direction of pushing out the recess.When the partition body 25 is rotated to the closed state, the projection The boss 41 of 28 is pushed into the guide groove 1 by the biasing force of the coil spring 40.
1 into the recess 42 to maintain this closed state. Note that the protrusion 28, coil spring 40, boss 41, and recess 42 constitute a holding mechanism.

(g) Effects of the invention According to the invention, the spring member allows the partition body to
The door is constantly energized to return to the state along the vertical wall (that is, the initial state), but when the first door closes, the front surface of the partition becomes approximately flush with the edge of the opening of the insulation box. In the collapsed state (i.e., the closed state), the spring, boss, and recess urge the protrusions of the partition in the protruding direction. In addition, since the protrusion is held in a state protruding from the partition, the gap between the protrusion and the guide member is eliminated, and the sealing performance between the partition and the edge of the opening of the insulation box is improved. be able to.

[Brief explanation of drawings]

Figure 1 is a perspective view of the door, Figure 2 is a front view of the insulation box, Figure 3 is a perspective view of the refrigerator, Figure 4 is an enlarged plan sectional view of the refrigerator of the partition part, and Figure 5 is the base of the protrusion. FIG. 6 is a plan sectional view showing another embodiment of the holding mechanism. 7A, 7B... Door, 11... Guide groove, 15... Guide member, 18A... Door inner plate, 19A... Vertical wall, 24... Hinge plate, 25... Partition body, 32... Spring member, 35...
Holding part, G...Gasket.

Claims (1)

[Claims] 1 Double door opening type first door 7A and second door 7B rotatably supported on both sides of the opening 5A of the heat insulating box 5
and a partition 2 which extends vertically and is rotatably attached to a vertical wall 19A provided on the back surface of the non-pivotal side portion of the first door 7A with approximately the same length as this door.
5, and a guide member 1 that is provided at the edge of the opening 5A located on the non-pivot side of the first door 7A and rotates the partition body 25 as the first door 7A opens and closes.
5 and a spring member 32 that constantly biases the partition 25 to return to the state along the vertical wall, the partition 25
a protrusion 28 that is retractably provided on at least one of the upper and lower ends of the partition, a spring 40 that urges the protrusion 28 in the projecting direction, and a front surface 26 of the partition that is attached to the edge of the opening 5A of the heat insulating box 5. A door device for a refrigerator or the like, comprising a boss 41 and a recess 42 for causing the protrusion 28 to protrude and maintain this state in a substantially flush state.