JPH0440152Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention has a movable shelf in a refrigerator that can adjust the partitioning state of the storage compartment as appropriate depending on the user's preference or the height of the stored items. The present invention relates to a movable shelf device that can be used for various purposes, and particularly to improvements in the support structure of the movable shelf.

[Conventional technology]

In general, storage compartments such as the refrigerator compartment and the freezing compartment in a refrigerator are appropriately equipped with shelves made of mesh shelves or the like that partition the interior into multiple levels, allowing for efficient storage of various stored items. It is said to be composed of One or one side of such shelf boards is configured to be extendable and rotatable as a movable shelf, and even when the size and height of the stored items are larger than the interval between the shelf boards, A movable shelf device is conventionally known in which the storage volume in that area can be increased as needed, and the storage volume can be stored appropriately and efficiently.

The schematic structure of such a movable shelf device will be briefly explained using FIG. 5. Reference numeral 1 indicates a refrigerator inner box;
2 is the outer box, and between these inner and outer boxes 1 and 2,
It is filled with a foamed heat insulating material 3 such as polyurethane foam. Reference numerals 4 and 5 denote upper and lower rails integrally formed on the inner wall of the inner box 1, and between these upper and lower rails 4 and 5 are front and rear shelves 6 and 7. Movable shelf 8 (one side of front shelf 6)
A guide groove 9 is formed to slidably support the upper and lower rails 4 and 5 in the front-rear direction, and the front ends of the upper and lower rails 4 and 5 are closed by a stopper wall 10. The lower rail 5 is formed to extend to the rear end side in the depth direction of the inner box 1, and is provided with a shaft portion 7a provided on the rear shelf portion 7 of the movable shelf 8 at a portion near the rear end. A groove portion 5a having a substantially upward U-shape is formed to lock and hold the front shelf portion 6, so that when the front shelf portion 6 is moved rearward and overlapped with the rear shelf portion 7, the entire body is centered around the shaft portion 7a. It is configured so that it can be rotated. In this case, the upper rail 4 is formed to have approximately half the length of the lower rail 5 so as to be located closer to the front end of the inner box 1 than the rotation trajectory thereof so as to enable the above-mentioned rotational movement. has been done.

[Problem that the invention attempts to solve]

However, according to the conventional support structure of the movable shelf 8 configured as described above, the front ends of the upper and lower rails 4 and 5 protruding from the inner surface of the inner box 1 are connected to the movable shelf 8.
A stopper wall portion 10 for preventing the front shelf portion 6 from falling off.
Because they are connected in series, when forming the refrigerator box, when filling and foaming foam material between the inner box 1 and outer box 2 to form the heat insulating material 3, it is necessary to The foaming jig body A is inserted and assembled.
It is not possible to directly press and hold the bottom of the guide groove 9 between the upper and lower rails 4 and 5, and furthermore, the gap portion where the movable shelf 8 on the rear end side of the upper rail 4 will rotate. In order to prevent the inner box 1 from deforming due to the foaming pressure of the foam material in the area shown in FIG. It was hot. The conventional configuration that uses the special mounting jig B not only poses a big problem in terms of workability, but also causes problems such as the occurrence of defective products due to the falling of the mounting jig B. There is a possibility that this may occur, and it is necessary to take some countermeasures.

The present invention has been developed in view of the above-mentioned circumstances, and by improving the support structure consisting of the lower rail and the bearing that supports the movable shelf in a slidable and rotatable manner, the movable shelf can be properly and reliably supported. It is an object of the present invention to provide a movable shelf device for a refrigerator, which can support the refrigerator and eliminate the need for conventional placement jigs during foam molding of a heat insulating material.

[Means for solving problems]

The movable shelf device for a refrigerator according to the present invention supports a movable shelf consisting of front and rear shelves in a slidable manner on the inner wall of an inner box of the refrigerator. The lower rail is formed to be open toward the inner box, and the lower rail is formed to extend to the rear end side of the inner box, and the shaft part of the rear shelf part is fitted into the rear end side and is rotatably supported. The shaft hole is recessed,
In addition, the upper rail is formed so as to face the lower rail at a predetermined distance halfway to the front end of the inner box, and the inner wall of the inner box located at the rear end of the upper rail follows the rotation locus of the movable shelf. At least a part of each is pressed and held in the corresponding gap by the foaming jig main body inserted into the inner box from the front end side, so that the space between the outer box and the inner box that make up the refrigerator box is A plurality of reinforcing beads are integrally formed and recessed in a direction perpendicular to the longitudinal direction of the rail to prevent the foam insulation material from deforming inward due to foaming pressure during foam molding. .

[Effect]

According to the present invention, since the guide groove between the upper and lower rails that slidably supports the front shelf of the movable shelf is opened toward the front, the bottom of the guide groove can be directly pressed with the foam jig body. In addition, the portion of the rear end of the upper rail that cannot be directly pressed and held by the foam jig main body is reinforced by the presence of a plurality of reinforcing beads formed on the inner box. Therefore, the placement jig that was conventionally used can be made unnecessary.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

Figures 1 to 4 a and b show an embodiment of a movable shelf device for a refrigerator according to the present invention, and in these figures, parts that are the same as or corresponding to those in Figures 5 to 7 described above are shown. are given the same numbers and their explanations will be omitted.

Now, according to the present invention, the front shelf part 6 is extendable and retractable between the upper and lower rails 4 and 5 which are integrally formed in the inner box 1 which has front and rear shelf parts 6 and 7 and constitutes a refrigerator box body. In a movable shelf device for a refrigerator, in which the rear shelf section 7 is configured to be rotatable around a shaft section 7a on the rear end side, the lower rail 5 is connected to the rear end section in the depth direction of the inner box 1. A shaft hole 20 into which the shaft 7a on the rear shelf 7 side is fitted and rotatably supported is provided in the rear end side, and the upper rail 4 is supported rotatably. , protruding from and facing the lower rail 5 at a predetermined distance halfway to the front end side of the inner box 1,
In the gap part corresponding to the rotation locus of the movable shelf 8 in the inner wall part of the inner box 1 located on the rear end side of the upper rail 4,
A plurality of reinforcing beads 21 are used to prevent deformation on the inner box 1 side due to foaming pressure when forming the heat insulating material 3 by filling a foam material between the outer box 2 and the inner box 1 that constitute the refrigerator box. are recessed in a direction orthogonal to the longitudinal direction of the rails 4 and 5 and integrally formed, and the lower end portion is formed into a foaming jig that is inserted from the front end side into the inner box 1 during foam molding of the heat insulating material 3. It is characterized by being configured so that it can be held down by the main body A. In addition, in the figure, 22 is a cylindrical bushing installed in the shaft hole 20 on the rear end side of the lower rail 5, and inside this bushing 22, a shaft part 7a integrally formed with the rear shelf part 7 is installed. As shown in FIG. 2, the bent portion 7b
By being inserted and fitted by elastic deformation, when the front shelf part 6 is pushed in and superimposed on the rear shelf part 7, it can be rotated. Also,
In the front and rear shelf parts 6 and 7 of the movable shelf 8, the front horizontal beam 7c of the rear shelf part 7 is connected to the vertical beam 6a of the front shelf part 6.
It is constructed integrally by being combined in a meshed state.

According to the present invention having the above-mentioned configuration,
By molding the front ends of the upper and lower rails 4 and 5 that slidably support the front shelf part 6 of the movable shelf 8 so as to be open toward the front, the bottom part of the guide groove 9 between the rails 4 and 5 is formed. Also, it is possible to directly press and support the foaming jig main body A during filling and foaming molding of the heat insulating material 3, and the rear end side of the upper rail 4, which extends halfway into the inner box 1, The part that forms a gap for pushing the front shelf part 6 into the rear shelf part 7 and rotating it upward in the overlapping state, and which cannot be directly pressed and held by the foaming jig main body A, is as follows: The inner box 1 is perpendicular to the longitudinal direction of this rail 4.
Due to the presence of a plurality of reinforcing beads 21 integrally formed with recesses in the inner wall, both upper and lower ends of the beads 21 are pressed by the foaming jig main body A, as is clear from FIG. 3b. Therefore, the strength of this void portion is guaranteed, and problems such as deformation due to the foaming pressure of the foam material do not occur.

Further, according to the above-mentioned configuration, since the shaft portion 7a of the rear shelf portion 7 of the movable shelf 8 is locked in the shaft hole portion 20 of the lower rail 5 via the bush 22, the front shelf Even if the section 6 is pulled out toward the front, the movable shelf 8 will not come off.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part may be modified and changed as appropriate. For example, in the embodiment described above, only the support part that supports one side of the movable shelf 8 is shown, but as the support part on the other side, upper and lower rails, etc. may be similarly formed on the inner wall of the inner box 1, or Or on the side of the fixed side shelf board formed in the same plane.
Various configurations are possible, such as providing a support portion as described above.

[Effect of the invention]

As explained above, according to the movable shelf device for a refrigerator according to the present invention, the movable shelf consisting of the front and rear shelves is slidably supported by the inner wall of the refrigerator inner box, and is formed between the upper and lower rails. A guide groove is formed to open toward the front, and a lower rail is formed to extend to the rear end of the inner box, so that the shaft of the rear shelf is formed at the rear end. A shaft hole into which the inner box is fitted and rotatably supported is recessed, and the upper rail is formed so as to face the lower rail at a predetermined distance halfway to the front end of the inner box. At least a portion of each is pressed and held by the foaming jig main body inserted into the inner box from the front end side in a gap corresponding to the rotation locus of the movable shelf in the inner wall portion of the inner box located on the rear end side. By doing so, multiple reinforcing beads are installed in the longitudinal direction of the rail to prevent deformation of the foam insulation material between the outer box and the inner box that make up the refrigerator box from being deformed inward due to the foaming pressure during foam molding. Since it is configured to be recessed in orthogonal directions and formed integrally, it can be expanded and contracted and rotated freely without using a conventional mounting jig, despite the simple and inexpensive configuration. Easily and reliably prevents deformation due to foaming pressure in the guide groove between the upper and lower rails that serves as the support for the movable shelf, and in the gap at the rear end of the upper rail to ensure the rotation trajectory of the movable shelf. This has various practical advantages, such as greatly improving workability during filling and foaming molding of insulation materials, and preventing the occurrence of defective products due to falling of conventional placement jigs. It has a positive effect.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing an embodiment of a movable shelf device for a refrigerator according to the present invention, Fig. 2 is a cross-sectional view taken along the line 2, and Figs. 3 a and b show guide groove portions between the upper and lower rails. , a sectional view of the main parts showing the relationship between the bead part on the rear end side of the upper rail and the foaming jig main body, Fig. 4a,
b is a side sectional view showing how the movable shelf is used; FIG. 5 is a schematic perspective view showing a conventional example; FIG. 6 is a sectional view of essential parts showing the relationship between the foaming jig body and the placement jig; The figure is a schematic perspective view of the placement jig. 1... Refrigerator inner box, 2... Outer box, 3... Foam insulation material, 4, 5... Upper and lower rails, 6, 7... Front,
Rear shelf section, 8...Movable shelf, 9...Guide groove, 20...
...Shaft hole portion, 21...Reinforcement bead, 22...Button.

Claims (1)

[Scope of utility model registration request] The front shelf is slidably supported between the upper and lower rails, which are integrally formed on the inner wall of the inner box that constitutes the refrigerator box, and the rear shelf is located at the rear end side. In the movable shelf device for a refrigerator configured to be rotatable around a formed shaft part, the lower rail is formed to extend to the rear end side of the inner box, and the rear shelf part is formed on the rear end side. A shaft hole portion into which the shaft portion of the inner box is fitted and supported is recessed, and the upper rail is protruded from the front end side of the inner box partway thereto to face the lower rail at a predetermined distance. ,
At least a portion of each of the refrigerator boxes is pressed and held by the foam jig main body inserted into the inner box from the front end side, on the inner wall portion of the inner box located on the rear end side of the upper rail. Multiple reinforcing beads are recessed in a direction perpendicular to the longitudinal direction of the rail to prevent the foam insulation material from deforming inward during foam molding between the outer and inner boxes that make up the rail. A movable shelf device for a refrigerator, characterized in that the refrigerator has a movable shelf device.