JPH0328308Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an improved assembly structure of a refrigerator, particularly when a so-called machine room is formed in the lower part of a heat-insulating box.

(B) Conventional Technology Conventionally, in this type of refrigerator, a machine room for storing and installing an electric compressor, an evaporation plate, an evaporation pipe, etc. is formed at the bottom of a heat-insulating box body and is separated from the storage room. At this time, for example, in Japanese Utility Model Application Publication No. 55-5036, the legs of the refrigerator are constructed so that a heat insulating material is foamed and filled on the sides of the machine room, which are the legs of the refrigerator, thereby reinforcing the legs.

(c) Problems to be solved by the invention According to this configuration, the sides of the machine room are filled with insulation material, which strengthens the legs and improves the sound insulation effect, but the bottom angle, bottom plate, etc. It was necessary to assemble multiple parts, which caused deterioration of assembly workability.

(d) Means for solving the problem The present invention aims to solve the problem by using the outer box 3.
The left and right side plates 31, 32, the bottom plate 2, and the inner box 7 that constitute the are integrated by foaming the heat insulating material 10.
4, has a bottom flange 15, and left and right side plates 31, 3
2 has an inward flange 33 at the lower end, the inward flange 33 abuts on the bottom flange 15, and the inward flange 33 has an insertion hole 34 into which the projection 16 protruding upward from the bottom flange 15 is inserted. It is.

(E) Function According to the present invention, the bottom plate and the left and right side plates are positioned and temporarily fixed by the insertion engagement between the protrusion on the bottom plate and the insertion hole of the left and right side plates. Furthermore, the number of parts can be significantly reduced.

(f) Embodiments Next, embodiments of the present application will be explained with reference to the drawings. FIG. 1 shows a sectional view of the bottom of the refrigerator 1. Reference numeral 2 designates a bottom plate of an outer box 3 that opens forward, and is a synthetic resin member that constitutes the inner surface of a machine compartment 4 at the bottom of the refrigerator 1. Further, 5 is a back plate of the outer box 3, and 6 is a front plate thereof. Reference numeral 7 designates an inner box that is incorporated into the outer box 3 and has a storage chamber 8 inside, and has an outward flange 7a at the front opening edge.
is inserted into and engaged with a groove on the opening edge of the outer box 3, and its lower edge is inserted into a groove 6 that opens above the upper edge of the front plate 6.
It is engaged with a. A heat insulating material 10 such as urethane foam is injected between the outer box 3 and the inner box 7, which are equipped with the bottom plate 2, back plate 5, front plate 6, etc., and is filled using an on-site foaming method to form a heat insulating box body 11. ing.

Fig. 2 is a rear perspective view of the bottom plate 2, Fig. 3 is an exploded view of the outer box 3, and Fig. 4 is an A-A in Fig. 1.
A line cross-sectional view is shown. The bottom plate 2 is made of hard synthetic resin by integral molding, and includes a step-shaped upper wall 12 with a high rear part, left and right side walls 13, 14, and a bottom flange 1 projecting outward from the lower ends of the left and right side walls 13, 14.
5 and 15, forming a substantially gate shape. A plurality of conical protrusions 16, 16... and grooves 17, 17 extending back and forth are integrally formed on the upper surfaces of the bottom flanges 15, 15 facing the heat insulating material 11. A front flange 19 and a rear flange 20 are integrally molded at the front and rear ends of the bottom plate 2, respectively, and extend outward from the machine room 4. Storage parts 22, 22 that store the refrigerant pipes 21 extending in the direction of the upper inner box 7
is formed. Reference numeral 24 denotes an evaporation pipe which is housed in the machine room 4, through which high-temperature refrigerant from an electric compressor (not shown), which will later be similarly provided in the machine room 4, is passed through, and after being bent into a meandering shape, a plurality of pipes are formed. is fixed by welding to form a substantially flat plate shape, and is spaced from the top wall 12 by support portions 25 and 26 that project downward from the left and right front and rear portions of the top wall 12 of the bottom plate 2. It is supported almost horizontally. An evaporation dish 27 for storing defrosting water from a cooler (not shown) is placed on the evaporation pipe 24 through an insertion hole 6 formed in the front plate 6.
It is placed so that it can be freely delivered from b. Support parts 25, 26
A holding portion 28 bulging downward is integrally formed on the upper wall 12 between the two, and this holding portion 28 contacts the upper edges of both side walls 27a of the evaporating dish 27 to connect the evaporating dish 27 to the evaporating pipe 24. It acts like a pressing force to stably hold the evaporating dish 27 between it and the evaporating pipe 24,
Prevents rattling caused by vibrations from the electric compressor. Further, heat conduction from the evaporation pipe 24 is improved. The evaporation pipe 24 heats the evaporation pan 27 to achieve automatic evaporation of the defrosting water. Also, 29 is a support part 25
This is a seal plate that prevents the insulation material 10 from leaking from the inside.

In Fig. 3, 30, 31, and 32 are the top plate and left and right side plates that make up the outer box 3, and they are continuous by bending two parts of one strip-shaped steel plate and making it into a gate shape. It is configured. Inwardly bent inward flanges 33, 33 are formed at the lower ends of the left and right side plates 31, 32, and a plurality of insertion holes 34, 34... are formed therein. Next, the procedure for assembling the heat insulating box 11 will be explained. The bottom plate 2 is molded in advance from hard synthetic resin. On the other hand, a front plate 6 is attached to the left and right side plates 31 and 32, which are formed by bending a steel plate into a substantially gate shape, by screwing or engaging them, extending between the lower portions thereof. After that, as shown by the arrow in FIG.
Attach to the assembly. In this case, the protrusions 16, 16, . . . of the bottom flanges 15, 15 are inserted into and engaged with the insertion holes 34, 34, .
5, 15 is brought into contact with the upper surface. At this time, the left and right side plates 3
Since the front plate 6 is fixed in advance between the projections 1 and 32, the left and right side plates 31 and 32 are prevented from expanding around the top plate 30. The insertion work into ... can be carried out smoothly, and the left and right side plates 31, 3 can be inserted easily by the engagement between the two.
2 and the bottom plate 2 are temporarily attached. Further, the inward flange 6c at the lower edge of the front plate 6 engages with the groove 19a at the lower end of the front flange 19 of the bottom plate 2. In this state, the front flange 19 of the bottom plate 2 is in close contact with the inner surface of the front plate 6, and the rear flange 20 is in close contact with the outer surfaces of the rear edges of the left and right side plates 31, 32. Also, the grooves 17, 1 of the bottom flanges 15, 15
Seal materials 36, 36 are housed in 7 to seal between the inward flanges 33, 33. After assembling in this way, the inner box 7 is assembled, the back plate 5 is fixed to other components of the outer box 3, and the insulating box body 11 is fixed.
The parts of the cooling device to be assembled inside are assembled, and the heat insulating material 10 is filled and integrated. Therefore, welding work and the like are not required, and the assembly work can be simplified. The present application is particularly effective when the outer box 3 is formed from a pre-painted steel plate since welding is not possible. Thereafter, the refrigerator 1 is completed by incorporating the evaporation pipe 24 and an electric compressor (not shown).

In the embodiment, the present application is applied to the refrigerator 1 with a front opening, but the present application is not limited thereto, and is also effective in a so-called chest type refrigerator with an upward opening.

(g) Effects of the invention According to the invention, the formation of the machine room space and the insulation material filling space on both sides of the machine room can be simultaneously achieved by simply inserting and engaging the protrusions on the bottom plate into the insertion holes of the left and right side plates, thereby reducing the number of parts. The assembly work can be simplified. In addition, since the protrusions protrude toward the insulation material side, they do not protrude downward and do not adversely affect the installation condition of the refrigerator.Furthermore, the bottom flanges are on the lower surface, and the inward flanges, which are the lower ends of the left and right side plates, are not exposed. The risk of corrosion is also significantly reduced.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention. Fig. 1 is a sectional view of the lower part of the refrigerator, Fig. 2 is a rear perspective view of the bottom plate, Fig. 3 is an exploded perspective view of the outer box, and Fig. 4 is a sectional view of the lower part of the refrigerator. It is a sectional view taken along the line AA in the figure. 2...Bottom plate, 3...Outer box, 7...Inner box, 10...
...Insulating material, 15...Bottom flange, 16...Protrusion, 31, 32...Right and left side plates, 33...Inward flange.

Claims (1)

[Scope of utility model registration request] In a refrigerator in which the left and right side plates, bottom plate, and inner box constituting the outer box are combined and integrated by injecting and foaming a heat insulating material, the bottom plate is molded from a synthetic resin material and the top wall, left and right side walls, and bottom flange are integrated. The left and right side plates each have an inward flange bent inwardly at the lower end thereof and abuts on the bottom flange, and the bottom flange is provided with a protrusion projecting upward, A refrigerator characterized in that the inward flange is provided with an insertion hole into which the projection is inserted.