JPH0633929B2 - Refrigerator cabinet - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a refrigerator cabinet, and more particularly to a refrigerator cabinet in which a hollow portion between inner and outer panels is filled with a heat insulating material.

[Outline of Invention]

The present invention separately manufactures a pair of side plates facing each other by hollow molding, and forms the side plate and the bottom plate of the other two surfaces manufactured by bending the pair of side plates. A structure in which a plate-shaped body is connected and a hollow part is filled with a heat insulating material, and the manufacturing cost of the mold is reduced by reducing the size of the mold required. Is.

[Conventional technology]

As shown in FIG. 6, a cabinet of a conventional vehicle-mounted refrigerator is made of resin inner box 1 manufactured by vacuum molding or injection molding, and vacuum molding or injection molding similar to sheet metal working or inner box 1. It was made up of an outer box 2 and The two boxes 1 and 2 are joined at the tip of the flange 3 of the inner box 1 to form a double-walled hollow box body, and a hard urethane foaming liquid is injected into this hollow portion and foam molding is performed. It was designed to be filled with heat insulating material.

[Problems to be solved by the invention]

According to such a conventional refrigerator cabinet, in order to manufacture the inner box 1 and the outer box 2, respectively, a molding die corresponding to the size of the boxes 1 and 2 is required. And if there is a change in the cabinet dimensions,
It is necessary to prepare a mold of a size corresponding to this, and this has a drawback that the cost of the mold increases.

Furthermore, when the inner box 1 and the outer box 2 are manufactured by vacuum forming, the thickness of the molded product is large and the corners are extremely thin, so the strength is drastically reduced, and reinforcement work such as mounting a reinforcing plate is required. Was becoming. Further, when the outer box is coated after filling with the heat insulating material, there is a drawback that the quality of the coating film cannot be improved because baking cannot be performed.
Further, even if a vinyl sheet or the like is attached to improve the appearance, there is a problem that it is difficult to attach it neatly to the curved portion of the corner.

The present invention has been made in view of the above problems, and does not require a large mold corresponding to the size of a cabinet, and a common mold can accommodate a change in volume of a refrigerator. It is intended to provide a cabinet.

[Means for solving problems]

According to the present invention, in a cabinet in which a hollow portion between an inner panel and an outer panel is filled with a heat insulating material, a pair of side plates facing each other is separately formed by hollow molding, and these pair of side plates are formed by another two. The present invention relates to a refrigerator cabinet characterized in that a hollow portion is filled with a heat insulating material while being connected to each other by inner and outer plate-like members forming a side plate and a bottom plate of a surface.

[Action]

The pair of hollow-molded side plates are connected to each other by inner and outer plate-shaped bodies that form a side plate and a bottom plate of the other two surfaces, and a hollow portion inside the pair of hollow-molded side plates and the inner and outer sides The cabinet of the refrigerator is assembled by filling the hollow portions surrounded by the plate-like members with the heat insulating material.

〔Example〕

The refrigerator cabinet according to the present embodiment will be described in the order of its production. As shown in FIG. 2, the hollow molded body 10 corresponding to the side plates at both ends of the cabinet is molded by blow molding, rotary molding or the like. On the front side of this molded body 10, convex portions 11 are formed on both sides, and on the lower side, convex portions 12 are formed along the bottom surface. The portion between the convex portions 11 and 12 is formed as a connecting portion 13 composed of a convex portion having a slightly low height. In addition, this molded body 1
A step portion 14 is formed at the upper end of 0, and a pin hole 15 is formed at the corner portion thereof. In such a hollow molded body 10, as shown by a chain line in FIG. 2, the tip portions of the convex portions 11 and 12 are cut and removed. At this time, since the connecting portion 13 connects the intermediate portions of the convex portions 11 and 12, it does not become slippery.

The pair of hollow molded bodies 10 thus manufactured are
As shown in the figure, they are arranged to face each other. Then, the inner liner 1 is contacted with the inner side surfaces of the convex portions 11 and 12.
8 is arranged between the two molded bodies 10, and both ends are bonded to the inner side surfaces of the convex portions 11 and 12. Inner Liner 18
Has a U-shaped cross section and has a U-shaped flange 19 at its upper end. Further, the bottom plate 20 is arranged so that both ends thereof come into contact with the outer side surfaces of the lower convex portions 12 of the pair of hollow molded bodies 10. The bottom plate 20 is formed in a shallow U-shape, and both ends of the bottom plate 20 are the convex portions 1
It is designed to be adhered to the outer surface of 2. Further, the bottom plate 20 is provided with a foaming stock solution inlet 21.

In this way, if the pair of molded bodies 10 are connected by the inner liner 18 and the bottom plate 20, the upper edge portion of the bottom plate 20 and the folded-back portion of the flange 19 of the inner liner 18 are connected by the plastic sheet 22 or paper, and heat insulation is performed. The skin after filling the material. Therefore, the convex portion 11,
The width of 12 corresponds to the thickness of the hollow portion.

After assembling the hollow box body in this manner, a rigid urethane foaming liquid is injected through the foaming undiluted solution injection port 21 of the bottom plate 20 to form a heat insulating box body by foam molding. As shown in FIG. 3, the foam material 30 fills the hollow molded bodies 10 at both ends, and at the same time, the inner liner 18
And the bottom plate 20 or the space between the inner liner 18 and the seat 22 is filled.

Thereafter, as shown in FIG. 4, a decorative plate 25 such as a coated steel plate or a vinyl steel plate is attached to the outer surface of the sheet 22 of the heat insulating box, and the flange 19 of the upper inner liner 18 is attached.
A corner plate 26 made of a decorative steel plate or a plastic is attached to the joint with and as shown in FIG. Further, the door 28 is attached so as to close the upper opening. Both ends of the door 28 are received by the stepped portion 14 of the hollow molded body 10 and rotatably supported by hinge pins fitted into the pin holes 15.

When it is not necessary to replace the decorative plate 25 on the outer surface, the bottom plate 20 is extended upward to form a deep U shape, and directly contacts the outer portion of the flange 19 of the inner liner 18 without interposing the plastic sheet 22. If they are in contact with each other, they can be manufactured at a lower cost. In addition, a groove 27 extending from the bottom to the upper edge may be formed in a portion where the side sheet 22 is used as a skin, and the refrigerant pipe may be guided into the groove 27. According to such a structure, the condenser unit of the refrigeration system is arranged on the lower side of the cabinet, and the pipes and the like when the evaporator is installed in the heat insulating box can be housed in the vertical groove 27. Then, if a decorative plate is attached to the vertical groove 27 after this, the external appearance becomes neat.

According to such a refrigerator cabinet, the mold is required only for molding the hollow forming bodies 10 at both ends, and all other parts can be manufactured by a bending jig by a vendor or the like. Therefore, it is possible to use a die that is considerably smaller than the size of the box body, the cost of the die is reduced, and the initial investment amount can be kept low. Also inner liner 18
Since it is not a vacuum formed product, it can be manufactured by bending a sheet-shaped material, so there is no uneven thickness,
Therefore, it becomes possible to satisfy the function with a thin raw material.

Further, according to such a cabinet, the inner liner 1
8. The inner volume can be changed by changing the dimension of the cabinet in the length direction without changing the sectional shapes of the bottom plate 20 and the seat 22. Therefore, by using the hollow molded bodies 10 at both ends in common, cabinets having different internal volumes can be obtained. Also the decorative plate 2
You can change the design just by reattaching 5.
The appearance tailored to the user's request can be obtained. Therefore, it is not necessary to prepare many kinds of stock items.

〔The invention's effect〕

As described above, according to the present invention, a pair of side plates facing each other are separately formed by hollow molding, and the pair of side plates are connected by the inner and outer plate-shaped bodies forming the two side plates and the bottom plate. In addition, the hollow portion is filled with a heat insulating material.

Therefore, according to such a structure, it suffices that the pair of side plates facing each other be separately hollow-molded by the mold, and the inner and outer plate-like bodies forming the side plate and the bottom plate of the other two surfaces are formed. It can be manufactured by bending. For this reason, the cabinet can be manufactured with a die smaller than the size of the cabinet, and the cost for the die can be significantly reduced. Furthermore, the inner volume can be changed by changing the lengths of the inner and outer plate-like bodies that form the side plate and the bottom plate of the other two surfaces that connect the pair of side plates, and it is easy to change the inner volume. Will be able to deal with.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a structure of a panel of a refrigerator cabinet according to an embodiment of the present invention, FIG. 2 is an external perspective view of a hollow molded body, and FIG. 3 is a longitudinal sectional view showing a foam-molded state. , Fig. 4 is an external perspective view showing the attachment of the decorative plates on both sides,
FIG. 5 is a perspective view in which a part of the assembled cabinet is broken away, and FIG. 6 is an exploded perspective view of a panel of a cabinet of a conventional refrigerator. In the reference numerals used in the drawings, 10 ... Hollow body (side plate) 11, 12 ... Convex portion 18 ... Inner liner 20 ... Bottom plate 21 ... Foaming liquid injection port 22 ... Sheet 25 ... Decorative plate 30 …… It is a foam material.

Claims (1)

[Claims] 1. In a cabinet in which a hollow portion between an inner panel and an outer panel is filled with a heat insulating material, a pair of side plates facing each other are separately formed by hollow molding, and these pair of side plates are formed by another two. A refrigerator cabinet characterized in that a hollow part is filled with a heat insulating material while being connected by inner and outer plate-like members forming a side plate and a bottom plate of one surface.