JPH1096581A - Door for refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate urethane foam leakage between a door inner plate and a sash by providing flexible fins brought into close contact with a superposed part of the sash and the plate and a space blocked by the plate and sash in a door having a door outer plate, the sash and the inner plate and urethane foam filled therein. SOLUTION: In the door for the refrigerator having a door outer plate, a sash 5 and a door inner plate 4 and urethane foam filled and foamed in a space 8, partial flexible material is used in a hard material. Hard fins 5b and flexible fins 5a are provided at the sash 5 by extrusion molding. A space 5c is provided between the fins 5a, 5b provided at the sash 5. A flange rear surface 4a of the plate 4 is brought into close contact with the fins 5a, 5b. Thus, foam leakage is suppressed by the fins 5a. The urethane foam leaked from the fins 5a is stored in the space 5c. Further, foam leakage is suppressed by the fins 5b, and the foam leaked from the fins 5b is stored in the space 5c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door for a refrigerator in which urethane foam is injected into a space closed by a door outer plate, a sash, and a door inner plate to form a door.

[0002]

2. Description of the Related Art FIG. 7 is a sectional view of a door of a conventional refrigerator disclosed in, for example, JP-A-6-50654. In the figure, when the urethane foam 7 is injected into a space 8 closed by the door outer plate 3, the sash 5, and the door inner plate 4 to form a door, the urethane foam is placed on the overlapping surface of the sash 5 and the door inner plate 4. In order to prevent the foam 7 from leaking to the outside, a fin 5a having a special shape is provided on the end face of the sash 5, and the fin 5a is in close contact with the back surface of the door inner plate 4 due to the internal pressure of foam to prevent the foam from leaking. Since a sealing material is not used, an inexpensive refrigerator door can be provided in terms of component configuration.

[0003]

A conventional refrigerator door is:
Since the fin 5a is formed as described above, there is a problem that the fin 5a is deformed after molding, and sufficient sealing properties cannot be obtained, and that the fin 5a is vulnerable to a foaming pressure other than in a direction perpendicular to the fin 5a at a corner or the like. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a sash is required for injecting urethane foam into a space closed by a door outer plate, a sash, and a door inner plate. It is an object of the present invention to provide a refrigerator door in which the sealing member interposed in the overlapping portion of the door and the inner plate of the door is removed, and which is inexpensive in terms of component configuration without the above problems.

[0005]

According to a first aspect of the present invention, there is provided a refrigerator door having a door outer plate, a sash, and a door inner plate, wherein the interior of the refrigerator door is filled with urethane foam and foamed. Provided with a soft fin that is in close contact with the overlapped portion of the sash and the door inner plate, and a space that is provided on the opposite side of the interior filled with urethane of the soft fin and that is closed by the door inner plate and the sash. It is characterized by the following.

A refrigerator door according to a second aspect of the present invention is the refrigerator door according to the first aspect, wherein a gap between the door inner plate and the sash is narrowed.

A refrigerator door according to claim 3 has a door outer plate, a sash, and a door inner plate. The refrigerator door is filled with urethane foam and foamed inside, and is erected on the sash.
A soft tube shape that is in close contact with the overlapped portion of the sash and the door inner plate, and a space that is provided on the opposite side of the interior filled with the soft tube-shaped urethane and that is closed by the door inner plate and the sash. It is characterized by.

According to a fourth aspect of the present invention, there is provided a refrigerator door according to the third aspect, wherein a gap between the door inner plate and the sash is narrowed.

A refrigerator door according to a fifth aspect of the present invention is the refrigerator door according to the second or fourth aspect, wherein a gap between the door inner plate and the sash is narrowed over the entire periphery of the door.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.
Referring to FIG. FIG. 1 shows Embodiment 1 of the present invention.
It is a perspective view of the refrigerator of FIG. FIG. 2 is a perspective view showing a door of the refrigerator. FIG. 3 is a sectional view taken along line AA of FIG. In the figure, 1 is a refrigerator box, 2 is a door, 3 is a door outer plate, and 4 is a door inner plate formed of a resin sheet. Reference numeral 5 denotes a sash which is formed by extruding and using a soft material partially in the hard material to provide a hard fin and a soft fin.
Reference numeral 6 denotes a gasket interposed between the box 1 and the door 2 to seal cold air. Reference numeral 7 denotes a heat insulating urethane foam filled in a space 8 closed by the door outer plate 3, the sash 5, and the door inner plate 4. Reference numeral 4a denotes a flange back surface of the door inner plate 4, and when urethane is foamed, a urethane foam 7 penetrates between the flange back surface 4a and the sash 5 to bond them together. Reference numeral 9 denotes a jig for holding each part to prevent the urethane foam 7 from leaking due to the deformation of the parts or the opening of the seal part due to the foaming pressure when the urethane foam 7 is filled.

FIG. 4 is an enlarged sectional view of a main part of the door of the refrigerator according to the first embodiment of the present invention. In the figure, 4b is a gap between the door inner plate 4 and the sash 5, 5a is a soft fin provided on the sash 5, 5b is a hard fin provided on the sash 5, 5c is a concave provided between fins of the sash. It is a space part of the shape.
The flange back surface 4a of the door inner plate 4 is in close contact with the soft fin 5a and the hard fin 5b of the sash. The dimension a is the top of the door inner plate 4 and the sash 5, and the dimension b is the rising portion of the door inner plate 4 and the sash 5.

During the foaming process of the urethane foam 7, the door inner plate 4 is adjusted to the shape of the sash 5 so that
In order to reduce the dimension a and the dimension b, the door inner plate 4 can be formed to have a narrow gap 4b with the sash 5 to reduce foam leakage. The soft fin 5a suppresses foam leakage, the urethane foam 7 leaked from the soft fin 5a is stored in the space 5c, and the foam leak is further suppressed by the hard fin 5b, and the urethane foam leaks from the hard fin 5b in the space 5c. Collect 7 With these configurations, leakage to the product design surface can be prevented.

Embodiment 2 FIG. Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 5 is an enlarged sectional view of a main part of a refrigerator door according to Embodiment 2 of the present invention. In the figure, 4b is a soft tube shape provided on the sash 5 up to the gap between the door inner plate 4 and the sash 5, 5b is a sash 5
The reference numeral 5c denotes a concave space provided between the fins of the sash and the fin or tube shape. The flange back surface 4a of the door inner plate is in close contact with the soft fin 5a and the hard fin 5b of the sash. The dimension a is the top of the door inner plate 4 and the sash 5, and the dimension b is the rising portion of the door inner plate 4 and the sash 5.

In the process of foaming the urethane foam 7, the door inner plate 4 is adjusted to the shape of the sash 5 so that
In order to reduce the dimension a and the dimension b, the door inner plate 4 can be formed to have a narrow gap 4b with the sash 5 to reduce foam leakage. Then, foaming leakage is suppressed by the soft tube shape 5d, and the soft tube shape 5d is formed in the space 5c.
The urethane foam 7 leaked from d is stored, and foaming leakage is further suppressed by the hard fin 5b, and the urethane foam 7 leaked from the hard fin 5b is stored in the space 5c. With these configurations, leakage to the product design surface can be prevented. Here, the advantage over the fin of the soft tube shape is that the surface area of contact with the door inner plate 4 is large and the effect of preventing foam leakage is high.

Embodiment 3 FIG. 6 shows the door inner plate 4 and the sash 5
It is a figure of the corner part at the time of assembling. Reference numeral 4c denotes a corner R of the door inner plate 4. By forming the corner in accordance with the shape of the sash 5, the above structure can be taken over the entire periphery of the door, and foam leakage can be prevented.

[0016]

According to the first aspect of the present invention, the door of the refrigerator is provided with a soft fin which is in close contact with the overlapping portion of the sash and the inner plate of the door and a space closed outside the soft fin. The urethane foam leakage between the sashes can be eliminated without using a separate member, and the foam leakage prevention effect is higher than the conventional fin-shaped specification alone.

In the refrigerator door of the second aspect, the effect of preventing foam leakage is further enhanced by reducing the gap between the door inner plate and the sash.

According to the third aspect of the present invention, the door of the refrigerator has a soft tube shape which is in close contact with the overlapping portion of the sash and the door inner plate, and a space closed outside the soft tube shape. Urethane foam leakage between the sashes can be eliminated without using a separate member, and the foam leakage prevention effect is higher than the specification of the soft fin.

According to the refrigerator door of the fourth aspect, since the gap between the door inner plate and the sash is narrowed, the effect of preventing foam leakage is further enhanced.

In the refrigerator door according to the fifth aspect, the gap between the door inner plate and the sash is narrowed over the entire periphery of the door, so that foam leakage can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a refrigerator according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view of a refrigerator door according to Embodiment 1 of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged sectional view of a main part of the door of the refrigerator according to Embodiment 1 of the present invention.

FIG. 5 is an enlarged sectional view of a main part of a door of a refrigerator according to Embodiment 2 of the present invention.

FIG. 6 is an assembled shape diagram of a door inner plate and a sash at a door corner of a refrigerator door according to Embodiment 3 of the present invention.

FIG. 7 is a structural view of a door of a conventional refrigerator.

[Explanation of symbols]

1 refrigerator box, 2 doors, 3 door outer plates, 4 door inner plates, 4
a Backside of flange, 4b Gap with sash, 4c Corner of sash, 5 sash, 5a Soft fin, 5b
Hard fin, 5c space, 5d soft tube shape,
6 Gasket, 7 Urethane foam, 8 Space closed by door outer plate, sash and door inner plate, 9 jigs.

Claims (5)

[Claims] 1. A refrigerator door having a door outer plate, a sash, and a door inner plate, wherein urethane foam is filled and foamed inside, and the refrigerator door is erected on the sash, and the sash and the door inner plate are overlapped. A soft fin that is in close contact with the mating portion; and a space provided on the opposite side of the inside of the soft fin filled with the urethane and closed by the door inner plate and the sash. Refrigerator door. 2. The refrigerator door according to claim 1, wherein a gap between the door inner plate and the sash is narrowed. 3. A refrigerator door having a door outer plate, a sash, and a door inner plate, wherein urethane foam is filled and foamed inside, and the refrigerator door is erected on the sash, and the sash and the door inner plate are overlapped. A soft tube shape that is in intimate contact with the mating portion; and a space portion provided on the opposite side of the inside where the urethane of the soft tube shape is filled and closed by the door inner plate and the sash. Refrigerator door featured. 4. The refrigerator door according to claim 3, wherein a gap between the door inner plate and the sash is narrowed. 5. The refrigerator door according to claim 2, wherein a gap between the door inner plate and the sash is narrowed over the entire circumference of the door.