JP3540576B2 - refrigerator - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerator in which a substrate case is attached to an outer box, and a heat insulating material is filled between the outer box and the inner box by an in-situ foaming method.
[0002]
[Prior art]
Conventionally, a refrigerator of this type is filled with a polyurethane foam insulating material between an outer box and an inner box by an in-situ foaming method, as shown in, for example, Japanese Utility Model Publication No. 6-12301 (F25D23 / 00). Has mounted and placed a substrate case before foaming the heat insulating material, and housed the circuit board in the substrate case and concealed it with a cover.
[0003]
Here, in the conventional board case, only the upper end is screwed to the top surface of the outer box, and the lower part is not fixed. That is, the lower portion of the substrate case was only fixed to the outer box by solidifying the heat insulating material.
[0004]
[Problems to be solved by the invention]
For this reason, when a pressing force is applied in the upper direction of the outer box due to the progress of the expanded polyurethane filled and expanded between the outer box and the inner box, the substrate case may be deformed by the pressing force. The deformation of the substrate case has caused problems such as leakage of heat insulating material and deterioration of appearance.
[0005]
The present invention has been made to solve such a conventional technical problem, and a refrigerator which prevents deformation of a substrate case due to an expanding heat insulating material, and aims to improve leakage of the heat insulating material and improvement of appearance deterioration. To provide.
[0006]
[Means for Solving the Problems]
The refrigerator of the present invention has a recessed board case made of hard resin attached to the upper part of the back plate of the outer box, and is filled with a heat insulating material between the outer box and the inner box by an in-situ foaming method.
The board case is fixed by screws to the upper end on the top surface of the outer box body, the lower end of the direction in which the heat insulating material coming in progress to expand, provided with a engaging claw projecting in the outer box side, the On the outside, an engagement hole into which the engagement claw is inserted and engaged is formed.
[0007]
According to the present invention, in a refrigerator in which a substrate case is attached to an outer box and a heat insulating material is filled between the outer box and the inner box by an in-situ foaming method, a substrate case in which the expanding heat insulating material is traveling. the lower end portion, the engaging claw which protrudes on the box side is provided, is fixed on the end on the box, the outer box, so to form engagement hole engaging pawl board case are engaged, Even if a pressing force is applied to the lower end side of the substrate case due to the progress of the heat insulating material, the deformation of the substrate case is reliably prevented by the engagement between the engagement claws and the engagement holes.
[0008]
This makes it possible to effectively eliminate leakage of the heat insulating material and deterioration of appearance, and also improves strength. Further, since only the engagement claws of the board case are inserted and engaged with the engagement holes of the outer box, the deterioration of the assembling workability is also solved.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described in detail with reference to the drawings. 1 is a vertical sectional side view of the refrigerator 1 of the present invention, FIG. 2 is an enlarged vertical sectional side view of the heat insulating box 6 of the substrate case 30 of the refrigerator 1 of the present invention, and FIG. 3 is an upper part of the outer box 2 of the refrigerator 1 of the present invention. FIG. 5 is an exploded rear view of FIG.
[0010]
The refrigerator 1 is formed from a hard-resin material such as ABS, and a gate-shaped outer box main body 2A having openings on the front and rear surfaces, an outer box 2 made of a steel plate including a bottom plate 2C and a back plate 2D. A heat insulating material 4 such as polyurethane foam is filled between the inner boxes 3 by an in-situ foaming method. The interior of the heat-insulating box 6 is divided into upper and lower four chambers by an upper partition wall 8, a middle partition wall 7, and a lower partition wall 9, and the upper part of the upper partition wall 8 is refrigerated room 11 and the lower partition wall 9. A lower part is a vegetable room 12, a part between the upper partition 8 and the middle partition 7 is an ice temperature room 10, and a part between the middle partition 7 and the lower partition 9 is a freezing room 13. A pre-partitioning member 15 is attached to an opening edge in the middle between the middle partition wall 7 and the lower partition wall 9.
[0011]
The front opening of the refrigerator compartment 11 is openably and closably closed by a double-door insulated door 14, and the freezer compartment 13 and the vegetable compartment 12 are draw-out insulated doors provided with containers 16A, 17A, 18A having top openings. The freezing compartments 16 and 17 (the upper and lower stages of the freezing compartment 13) and 18 are openably and closably closed. The ice temperature chamber 10 is also closed by a drawer-type heat-insulating door 19 provided with a container 19A having an upper surface opening.
[0012]
The interior of the freezer compartment 13 is divided into front and rear portions by a partition plate 22 and a cooler front plate 23, and a cooling chamber 24 is defined behind the cooler front plate. A vessel 26 is provided vertically. A blower 29 is provided above the center of the cooler 26.
[0013]
Further, a machine room 99 is formed at a lower portion of the heat insulating box 6, and a compressor, a condenser, and a machine room blower (not shown) constituting a well-known refrigeration cycle with the cooler 26 are provided at a rear portion inside the machine room 99. And so on.
[0014]
With the above configuration, when the compressor and the blower 29 are operated, the cool air in the cooling chamber 24 cooled by the cooler 26 is sucked upward by the blower 29 and is blown into the freezing chamber 13 in the front. . Then, after circulating through the freezing room 13 and cooling, the cool air returns to the inside of the cooling room 24. As a result, the freezing compartment 13 is maintained at a predetermined freezing temperature.
[0015]
A part of the cool air blown out from the blower 29 is blown into the refrigerator compartment 11 and the ice warming room 10, circulates through the inside and cools, and then flows into a return duct (not shown). The cool air in the return duct is discharged into the vegetable room 12, cools the inside, and returns to the cooling room 24.
[0016]
On the other hand, a hard resin substrate case 30 is attached to the upper part of the back plate 2D of the outer box 2 of the refrigerator 1. As shown in FIG. 3, the board case 30 has a rectangular shape in which a recessed board storage portion 30A is formed, and the upper end thereof is fixed to the top surface 2B of the outer box main body 2A with screws 33.
[0017]
As shown in FIG. 2, the lower end of the board case 30 is provided with several engagement claws 30B protruding toward the outer box 2 side, and the back plate 2D is provided with several engagement holes 31. Is formed. The lower portion of the engaging claw 30B of the substrate case 30 is tapered so that the amount of protrusion is reduced downward so that the engaging hole 31 can be easily fitted. Further, an embedded piece 30C for stably fixing the substrate case 30 when the foamed polyurethane as the heat insulating material 4 is injected is formed.
[0018]
With the above configuration, when mounting the substrate case 30 on the outer case 2, the upper end of the substrate case 30 is mounted on the top surface 2B of the outer case body 2A by screwing, and as shown in FIG. The engagement hole 31 of the back plate 2D is fitted into the engagement claw 30B of the base 30. Then, a bottom plate 2C is attached to the outer box body 2A to complete the outer box 2. After the inner box 3 is assembled in the outer box 2, it is set in a jig (not shown). The foamed polyurethane is filled between the boxes 2 and 3. Due to the solidification of the heat insulating material 4, the outer box 2, the inner box 3, and the substrate case 30 are fixed to each other. Then, a circuit board (not shown) is accommodated in the circuit board case 30, and a circuit board cover 32 for concealment is attached by screwing.
[0019]
At this time, the foamed polyurethane undiluted solution (heat insulating material 4) expanding between the two boxes 2 and 3 advances in the direction shown by the arrow in FIG. Therefore, the expansion pressure of the heat insulating material 4 is applied as a pressing force to the lower end of the board case 30, but the engagement claws 30B of the board case 30 are engaged with the engagement holes 31 of the back plate 2D, and the lower part of FIG. Even when pressed from above, the upper edge (FIG. 2) of the engagement hole 31 abuts, so that the lower edge of the substrate case 30 can be reliably prevented from being deformed upward.
[0020]
Thereby, the leakage of the heat insulating material 4 and the deterioration of the appearance can be effectively eliminated, and the strength can be improved. In addition, since assembly can be performed only by inserting and engaging the engagement claws 30B of the board case 30 into the engagement holes 31 of the outer case back plate 2D, it is possible to eliminate the deterioration of assembly workability.
[0021]
【The invention's effect】
As described in detail above, according to the present invention, in a refrigerator in which a substrate case is attached to an outer box and a heat insulating material is filled between the outer box and the inner box by an in-situ foaming method, the expanding heat insulating material progresses. At one end of the board case in the coming direction, an engaging claw protruding toward the outer box is provided, and the other end is fixed to the outer box. Because of the formation, even if a pressing force is applied to one end side of the substrate case due to the progress of the heat insulating material, the deformation of the substrate case is reliably prevented by the engagement between the engagement claws and the engagement holes.
[0022]
This makes it possible to effectively eliminate leakage of the heat insulating material and deterioration of appearance, and also improves strength. Further, since only the engagement claws of the board case are inserted and engaged with the engagement holes of the outer box, the deterioration of the assembling workability can be solved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional side view of a refrigerator of the present invention.
FIG. 2 is an enlarged vertical sectional side view of a heat insulating box of a substrate case portion of the refrigerator of the present invention.
FIG. 3 is an exploded rear view of the upper part of the outer box of the refrigerator of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Outer box 2A Outer box main body 2B Top surface 2C Bottom plate 2D Back plate 3 Inner box 4 Insulation material 6 Insulated box 11 Refrigerator room 12 Vegetable room 13 Freezer room 14, 16, 17, 18, 19 Insulated door 26 Cooler 29 Blower 30 Board case 30A Board storage section 30B Engagement claw 30C Embedded piece 31 Engagement hole 32 Board cover 33 Screw

Claims (1)

A refrigerator in which a recessed substrate case (30) made of hard resin is attached to the upper part of the back plate of the outer box (2), and a heat insulating material is filled between the outer box (2) and the inner box by an in-situ foaming method,
The board case (30) has an upper end fixed to a top surface (2B) of the outer box main body (2A) by a screw (33) , and a lower end in a direction in which the expanding heat insulating material (4) proceeds. provided with a engaging claw (30B) which projects to the outer box side, on the outer box (2), said engaging engagement holes claw (30B) is inserted into and engaged (31) is formed A refrigerator characterized by that:

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