JPH08121945A - Refrigerator door - Google Patents

Abstract

(57) [Summary] [Purpose] A foam insulation material that improves the contact state between the flange and the peripheral edge of the door inner surface plate by only partially changing the shape of the flange of the door outer surface plate that constitutes the refrigerator door. Eliminate leaks. [Structure] A door of a refrigerator is made of a steel plate having flanges 9 at the rear ends of upper, lower, left and right sides, and a resin door in which a peripheral edge portion 8 is brought into contact with the flange 9 of the door outer plate 3. The inner surface plate 4, a gasket attached to the U-shaped groove 10 formed in the door inner surface plate 4, a foaming heat insulating material filled between the door outer surface plate 3 and the door inner surface plate 4, and the like. In such a door 2, by widening the width of each flange 9 of the door outer surface plate 3 in the central portion and narrowing the side portions, it is possible to eliminate the deformation of the flange 9 that tends to occur during the assembly of the door. Since the deformation of 9 is eliminated, the contact state between the flange 9 and the peripheral edge of the door inner surface plate 4 is improved, and the leakage of the foamable heat insulating material is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator door structure.

[0002]

2. Description of the Related Art Some refrigerators have a drawer type door 2 as shown in FIG. The door 2 is made of a steel plate, which is press-molded into a shape as shown in FIGS. 2 and 4, and a door inner face plate 3 made of resin (also referred to as a door back).
4 and a reinforcing plate 5 that reinforces the door inner surface plate 4 from the back side,
Foaming heat insulating material 6 filled between the door outer surface plate 3 and the door inner surface plate 4
And a gasket 7 formed in a frame shape and a handle attached to the front surface of the door outer surface plate 3. A flange 1 for contacting a peripheral edge portion 8 of the door inner surface plate 4 to the rear end of the side surface of the door outer surface plate 3.
1 is formed. Further, a U-shaped groove 10 for attaching the gasket 7 is formed inside the peripheral edge portion 8 of the door inner surface plate 4. For assembling the door 2, a main body 12 as shown in FIG.
A door assembling apparatus 14 including a lid 13 and a lid 13 is used. When the lid 13 is closed, the door outer surface plate 3 and the door inner surface plate 4 are held in a positional relationship as shown in FIG. The heat insulating material 6 is filled. In addition, a support body that supports, for example, a vegetable case is attached to the door 2 thus formed.

[0003]

By the way, fasteners such as screws are not used at all for fixing the door outer surface plate 3 and the door inner surface plate 4 and the like, and each of them has a close contact strength with the foaming heat insulating material 6. Reliably integrated. However, the foam insulation 6
When filling, the flange 11 of the door outer surface plate 3 and the door inner surface plate 4
If the state of contact with the peripheral portion 8 is poor or the contact area is small, the foam heat insulating material 6 leaks from the gap. To eliminate this leakage, make the width of the flange 11 U
It is effective to widen the outer surface of the V-shaped groove 10 to the limit and reduce the distance D from the outer surface of the U-shaped groove 10, but this distance D
If is too small, the outer surface of the U-shaped groove 10 may come into contact with the tip of the flange 11 during assembly. When such contact occurs, there is no problem because the central part of the flange 11 has elasticity and temporarily moves (escapes) to the outside, but there is no problem.
There is almost no such movement in the side portions near the four corners of the above, and since the door outer surface plate 3 has a thickness of only about 0.5 mm, the flange 11 side may be deformed. If the flange 11 side is deformed, the state of contact with the door inner surface plate 4 deteriorates, and the foamable heat insulating material 6 leaks. Therefore, an object of the present invention is to provide a refrigerator door that does not cause these problems.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is made to extend inward from the rear end of the side surface which is vertically and horizontally connected to the rectangular front surface. A door outer face plate having a flange, a door inner face plate having a frame-shaped U-shaped groove inside a peripheral edge portion closely contacting the outer face of the flange, and a foaming heat insulating material filled between the door outer face plate and the door inner face plate. In the case of the gasket attached to the U-shaped groove, the width of each flange of the door outer surface plate is wide at the central portion and narrow at the side portions.

[0005]

With the above construction, the gap between the end surface of the flange and the outer surface of the U-shaped groove formed on the inner surface plate of the door can be reduced in the central portion where the deformation of the flange is unlikely to occur, and the deformation of the flange can be prevented. In the side portion where it is likely to occur, a clearance can be provided in the gap between the end surface of the flange and the outer surface of the U-shaped groove formed on the inner surface plate of the door, so that the deformation of the flange can be eliminated and, as a result, the foam insulation material. Can be suppressed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Figure 1 shows a part of a refrigerator.
Is a refrigerator main body, and 2 is a drawer type door provided in the lower front of the refrigerator main body 1. The door 2 includes a door outer surface plate 3 made of a steel plate and a resin inner door plate 4 as shown in FIGS. 2 and 3.
And a reinforcing plate 5 that reinforces the door inner surface plate 4 from the back side, and a foaming heat insulating material 6 filled between the door outer surface plate 3 and the door inner surface plate 4.
And a gasket 7 attached to the door inner surface plate 4, and a flange 9 for contacting the peripheral edge portion 8 of the door inner surface plate 4 is formed at the rear end of each side surface of the door outer surface plate 3. Further, a U-shaped groove 10 for mounting the gasket 7 is formed inside the peripheral edge of the door inner surface plate 4. Fasteners such as screws are not used at all for assembling these members, and in particular, the bonding between the door outer surface plate 3 and the door inner surface plate 4 depends on the adhesion strength of the foaming heat insulating material 6.

By the way, the characteristic feature of this embodiment is that the width of the flange 9 of the door outer surface plate 3 is wide in the central portion and narrow in the lateral portions as shown in FIG. The door outer surface plate 3 having such a flange 9 and the door inner surface plate 4 described above.
In the case of the combination, the contact area with the peripheral edge portion 8 of the door inner surface plate 4 can be made large in the central portion of the flange 9, leakage of the foamable heat insulating material 6 can be suppressed, and the side close to the four corners of the door 2 can be suppressed. Compared to the central part, the peripheral part 8 of the door inner face plate 4 is
Although the contact area with the flange 9 becomes slightly smaller, the clearance D between the end surface of the flange 9 and the outer surface of the U-shaped groove 10 can be increased, so that the deformation of the flange 9 at the time of assembly can be eliminated, and as a result, the door inner surface plate 4 Since there is no deformation, the foam insulation 6
Can be suppressed.

[0008]

The door constructed as described above has a beautiful appearance because the door inner surface plate is not deformed and the foamed heat insulating material does not leak to the outside, and the gasket and the refrigerator are beautiful. Since the close contact with the flange on the front of the main unit is improved, there is no fear of cold air leakage, and the quality as a refrigerator is improved.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts of a refrigerator according to the present invention and a conventional example.

FIG. 2 is an enlarged cross-sectional view of a main part of a refrigerator door according to the present invention and a conventional example.

FIG. 3 is a perspective view of a door outer surface plate and members related thereto according to an embodiment of the present invention.

FIG. 4 is a perspective view of a door outer surface plate and a member related thereto, showing a conventional example.

FIG. 5 is a schematic view of a door assembling apparatus.

[Explanation of symbols]

 1 Refrigerator body 2 Door 3 Door outer surface plate 4 Door inner surface plate (door back) 5 Reinforcing plate 6 Foaming heat insulating material 7 Gasket 8 Peripheral part 9 Flange 10 U-shaped groove

Claims (2)

[Claims] 1. A door outer surface plate having a flange extending inwardly from a rear end of a side surface of the rectangular front surface which is vertically and horizontally connected to the front surface, and a frame inside a peripheral edge portion closely contacting the outer surface of the flange. A door inner face plate having a U-shaped groove, a foam heat insulating material filled between the door outer face plate and the door inner face plate, and a gasket attached to the U-shaped groove, each of the door outer face plates. A refrigerator door characterized in that the width of the flange is wide at the center and narrow at the sides. 2. The door of the refrigerator according to claim 1, wherein a reinforcing plate is provided on the back side of the inner plate of the door.