JP2834976B2 - 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 refrigerator, and more particularly to a refrigerator in which components inside a refrigerator are fixed to an inner box by screwing a tapping screw.

[0002]

2. Description of the Related Art A conventional refrigerator of this kind is shown in FIGS.
As shown in the figure, a tapping screw 4 formed by injection molding using a mold at a fixed position 3 of the internal part 2 of the inner box 1 forming the refrigerator body via the heat insulating layer together with the outer box. A tap bun 6 having a tap portion 5 is adhered and attached by dissolving the surface with a solvent, and the tap bun 6 reinforces the fixing position 3 of the internal component 2 of the inner box 1 to secure necessary strength. The internal component 2 is located at the fixing position 3, the tapping screw 4 is inserted into the insertion hole 7 of the tapping screw 4 of the internal component 2, and the tapping screw 4 is inserted into the tap portion 5 of the tap bun 6. By tapping and tightening, the in-compartment component 2 is fixed to the fixing position of the in-compartment component of the inner box 1.

Another configuration in which the fixing position of the internal components of the refrigerator inner box is reinforced and the internal components are fixed to the fixing position is described in Japanese Patent Application Laid-Open No. 62-59371. As described above, a part of the inner box is formed so as to be recessed when viewed from the heat insulating layer side, and an adhesive or a soft resin is added into the recess to form a tap bun. In this configuration, a necessary strength is secured by reinforcing the fixing position of the internal component, and the internal component is fixed to the fixing position with a tapping screw.

[0004]

As described above, if a tap bun is attached to a position where an internal component of the inner box is fixed to fix the internal component, a tap portion for tapping screw fastening is formed. To do so, a tap ban molded into a predetermined shape is required, an adhesive (solvent) for attaching the tap bun to the inner box is required, and positioning accuracy when attaching the tap bun is also required. Therefore, there is a disadvantage that the processing cost for forming the tap bun is high and automation is difficult.

[0005] In the structure described in Japanese Patent Application Laid-Open No. 62-59371, a certain thickness is required to fulfill the function as a tap bun, so that the recess becomes deep. In addition, since the inner box is convex toward the inside of the refrigerator, the inner jig necessary for foaming urethane as an insulating material is undercut, and the jig structure is complicated and expensive due to the slide mechanism etc. Had the disadvantage of becoming

[0006]

In the refrigerator of the present invention, the inner box is protruded in the shape of a mortar on the heat-insulating layer forming side at the position where the internal parts of the inner box are fixed, and the urethane is formed on the heat-insulating layer forming side. A liquid reservoir for storing the liquid is provided, the urethane liquid is stored in the liquid reservoir, a foaming reaction is performed, and the urethane liquid is cured to a predetermined shape by volume expansion to form a tap portion necessary for tightening the tapping screw, and the tapping screw is formed in the tap portion. Then, the tapping screw is tightened while tapping at the above, so that the above-mentioned internal components are fixed to the inner box.

[0007]

In the above construction, the internal components are fixed to the inner box with tapping screws, so that the positioning accuracy for forming the tap portion is eased, and the mechanization and automation of the tap portion forming process can be easily performed, resulting in a large production cost. Since the tap is provided on the heat-insulating layer forming side of the inner box, the amount of urethane liquid used as the material of the tap can be minimized. Also, the need for a slide mechanism or the like can be eliminated and the cost can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the refrigerator according to the present invention will be described below with reference to FIGS.

In the refrigerator of the present invention, a tapping screw is formed by projecting the inner box 11 to the heat-insulating layer side 14 at the fixing position 13 of the internal component 12 of the inner box 11 forming the refrigerator body through the heat insulating layer together with the outer box. A storage portion 18 of a urethane liquid 17 having a mortar-like shape having a guide portion 16 at the center for guiding the tip of
The urethane liquid 17 is stored in the storage part 18 and subjected to a foaming reaction to be cured into a predetermined shape by volume expansion to form a tap part 20 necessary for tightening the tapping screw 15.
Tightening the tapping screw while tapping the tapping screw 15 with the tapping screw 15 to move the internal component 12 to the inner box 11.
It is configured to be fixed to.

In the above configuration, the urethane liquid 17 is supplied to the storage section 18 of the inner box 11 by moving a urethane discharge head (urethane supply head) 22 to the storage section 18 as shown in FIG. The urethane liquid 17 is applied and supplied in a state where the position of the urethane discharge head 22 is determined. In this case, the position of the urethane discharge head 22 is allowed to vary within the range H.

Further, since the urethane liquid 17 immediately after the application has a low viscosity, as shown in FIG. 4, the urethane liquid 17 accumulates so as to become thicker near the center (guide portion 16). And the thickness T required for the tap portion 20 is secured in the required range Y, and the reaction proceeds further to cure and secure the strength to form the tap portion 20.

The inner box 1 of the refrigerator constructed as described above
As shown in FIGS. 6 and 7, the inner part 12 is fixed to the guide part 16 of the inner box 11 with the insertion hole (screw tightening hole) 24 of the tapping screw 15 of the inner part 12. The tapping screw 15 is inserted through the insertion hole 24 to be positioned at the guide portion 16, and the tapping screw 15 is pressed by a screwdriver to tighten the tapping screw 15 while tapping on the tap portion 20, thereby forming the internal component. 12 is fixed to the inner box 11.

[0013]

According to the refrigerator of the present invention having the above-described structure, the positioning accuracy of the formation of the tap portion is eased, the mechanization and automation of the tap portion forming process can be easily performed, and the production cost can be greatly reduced. The tap section is provided on the side of the inner box where the heat insulation layer is formed, so the amount of urethane liquid used as the material of the tap section can be minimized. And the like can be eliminated, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view of a main part of a tap portion showing one embodiment of a refrigerator of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a sectional view of a main part showing a supply state of a urethane liquid in a tap part of FIG. 1;

FIG. 4 is a cross-sectional view of a main part showing a state immediately after supply of a urethane liquid in a tap portion of FIG.

FIG. 5 is a cross-sectional view of a main part showing a state after a foaming reaction of a urethane liquid in a tap portion of FIG. 1 is completed.

FIG. 6 is a cross-sectional view of a main part of the refrigerator according to the embodiment of the present invention, showing a state before the internal components are fixed.

FIG. 7 is a cross-sectional view illustrating a main part of the refrigerator according to an embodiment of the present invention, showing a state in which internal components have been completely fixed.

FIG. 8 is a schematic perspective view of an inner box showing one embodiment of a conventional refrigerator.

FIG. 9 is a cross-sectional view illustrating a main part of a conventional refrigerator, showing a state in which internal components are completely fixed.

FIG. 10 is a cross-sectional view of a main part showing a state in which fixing of internal components is completed, showing an embodiment of a conventional refrigerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Inner box 12 Internal parts 13 Adhesion position 14 Insulation layer side 15 Tapping screw 17 Urethane liquid 18 Storage part 20 Tap part

Claims (1)

(57) [Claims] 1. A refrigerator in which parts in a refrigerator are fixed to an inner box by screwing a tapping screw, wherein the inner box is shaped like a mortar on the side of the heat-insulating layer where the inner part is fixed. The urethane liquid is provided on the heat-insulating layer forming side by protruding the urethane liquid. The urethane liquid is stored in the liquid reservoir, foaming reaction is performed, and the urethane liquid is cured to a predetermined shape by volume expansion. A refrigerator comprising: a tap portion; a tapping screw is tightened while tapping the tap portion with the tapping screw; and the internal component is fixed to an inner box.