JPH02219975A - Door for refrigerator - Google Patents

Abstract

PURPOSE:To eliminate temperature conduction of hot air from an exterior through a door structure by composing the title door of a door outer face plate formed integrally in a vessel state with an outer surface and four side faces made of a plastic material, a door inner face plate and a door frame, and a heat insulator to be filled among the three. CONSTITUTION:A foamable heat insulator 19 is formed in a space formed among a door outer face plate 4, a door inner face plate 11 and a door frame 12, made of plastic material such as ABS resin to construct a door structure 3. The door frame is engaged at a recess 15 with an engaging pawl 7 of the plate 4 in an assembling work, and the pawl 10 of the engaging pawl 9 of the plate 4 is engaged with an engaging pawl 17 to be effectively mounted. Further, a plurality of supporting pieces 8 and engaging pieces 9 protruding on a door outer face plate 5 reinforce the outer face plate 5 made of a plastic material to prevent it from recessing or cracking. Further, the face plate 5 of the plate 4 is coated with a transfer foil 20 of various design to cover it with molding marks of the pieces 8, 9 and to improve design effect on the outer surface of a door 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a door structure of a heat insulating door that closes the front opening of a refrigerator.

Conventional technology In recent years, in order to improve the appearance quality of refrigerators or to make it possible to select the appearance design, a flat door face plate and its periphery are inserted into a door frame made of extruded material such as PVC to ensure the strength of the door. Satsushi-style doors, in which a reinforcing plate is inserted into the door frame, were often seen.

An example thereof will be explained below with reference to FIGS. 6 and 6. In the figure, reference numeral 1 denotes a refrigerator body, and a refrigerator door 2 (hereinafter referred to as ``field'') is attached to the front opening of the refrigerator body through a lower hinge 3 and an upper hinge 4, and a flat door top plate 5 (hereinafter referred to as a flat door top plate ), the hand/l/6 is attached. The door 2 includes a flat door front plate 6, a door frame covering the outer periphery of the flat door front plate 6, a door back plate 8 parallel to the flat door front plate 6, and the flat door front plate 5. ．． It consists of a foamed polyurethane heat insulating material 9 filled between the door frame 7 and the door back plate 8. 10 is a recess provided in the door frame 7 into which the flat door front plate 6 is inserted.

Further, 11 is a groove provided in the door frame 7, into which a gasket 12 is inserted. 13 is a door frame reinforcing plate inserted into the door frame. Further, 14 is a door back plate reinforcing plate installed at the 7-lung portion 15 of the door frame 7.

The strength reinforcement against the moment load using the lower hinge 3 and upper hinge 4 as a fulcrum due to the door 2's own weight, which is a drawback of such a large door system, is achieved by adding the door frame reinforcing plate 13 and the door back plate reinforcing plate 14.
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Problems to be Solved by the Invention However, in order to use such a flat top plate 6 as a structure for the door 2, its peripheral edge must be inserted into the door frame. Door frame reinforcing plate 13 and door back plate reinforcing plate 14 for the purpose of reinforcing the door strength, which is a drawback.
However, since it is in contact with the door frame, the temperature of the warm air outside is conducted through the door frame, resulting in an increase in power consumption.

The present invention solves the above-mentioned conventional problems,
The purpose is to eliminate the temperature conduction of warm air between the door frame reinforcing plate and the door back plate reinforcing plate.

Means for Solving the Problems In order to solve the above problems, the present invention provides a door outer plate made of a plastic material and integrally molded into a container shape with an outer surface and four side surfaces, and a door that covers the opening surface of the door outer plate. an inner plate,
It is composed of a door frame that extends around the periphery of the side surface of the door inner surface plate, and a heat insulating material that is filled between the three parts.

Function: With the above configuration, there is no need to use a steel plate such as a reinforcing plate in the door structure, so it is possible to eliminate temperature conduction of warm air from the outside through the door structure.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4.

Reference numeral 1 denotes a refrigerator main body, which has a freezing chamber and an ice-making chamber formed in the upper part, a refrigerating chamber 2 formed in the lower part, and has a door 3 attached to the front opening of each chamber so as to be openable and closable.

4 is made of plastic material such as ABS resin, and the outer surface 5
It is integrally formed into a container shape with an inner surface opened by four side surfaces 6, and has a locking claw 7 on the inner peripheral edge of the side surface 6, and a plurality of pieces with a slight step below the locking claw 7. This is a door outer plate having a supporting piece 8 and a plurality of locking pieces 9 integrally provided at a predetermined distance from the supporting piece 8 and each having a claw portion 10 at the tip.

Reference numeral 11 denotes a door outer plate that covers the inner opening of the door outer plate 4. Reference numeral 12 has a groove 14 on the upper surface into which the mounting base of the gasket 13 is press-fitted, a recess 16 on one side that engages with the locking pawl 7 of the door outer plate 4, and a lower surface for mounting and supporting on the support piece 8. A locking claw part 1 is press-fitted into the claw part 1o of the locking piece 9 on the other side of the mounting part 16, and an outer peripheral edge of the door inner surface plate 11 is placed on the upper surface of the locking piece 9. A door frame having a support part 18 for supporting and fixing by screwing or the like is placed and supported between the support piece 8 and the locking piece 9 of the door outer panel 4, surrounding the outer peripheral edge of the side surface 6. It will be done. The door structure 3 is constructed by filling a foamed heat insulating material 19 into the space formed between the door outer panel 4, the door inner panel 11, and the door frame 12.

With the above configuration, the door frame engages with the recess 15 of the locking pawl of the door outer plate 4 during assembly work, and also engages the pawl 10 of the locking piece 9 of the door outer plate 4 with the door frame. The engagement of the claw portions 17 allows for more secure attachment.

Further, the plurality of supporting pieces 8 and locking pieces 9 protruding from the door outer panel 5 reinforce the outer surface 6 made of plastic material and prevent it from cracking or cracking.

Further, by applying transfer foil 20 of various patterns to the outer surface 6 of the door outer plate 4, the support piece 8 and the locking piece 9 are
The molding marks can be covered, and the design effect of the outer surface of the door 3 can be improved.

Effects of the Invention As described above, the present invention comprises: a door outer plate made of a plastic material and integrally molded into a container shape on an outer surface and four side surfaces; a door inner plate covering an opening surface of the door outer plate; By combining the door frame that wraps around the side periphery of the door inner plate and the insulating material that is filled between the three parts, a reinforcing plate that reinforces the door, etc., compared to the conventional large door system. No additional parts are required, and the entire door outer panel is made of plastic material, making it lightweight and cost-effective.

Furthermore, since no metallic materials are used for the door,
This solves the problem of increased power consumption due to conduction of external temperature.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a refrigerator equipped with a door according to an embodiment of the present invention, FIG. 2 is a sectional view of the main part taken along line 11-[ in FIG. 1, and FIG. 3 is a door according to an embodiment of the present invention. Figure 4 is an enlarged perspective view of part A in Figure 3, Figure 6 is a perspective view of a refrigerator equipped with a conventional door, Figure 6 is taken along line IV-IV in Figure 6. FIG. 1...refrigerator body, 3...door, 4...
...Door outer plate, 8...Support piece, 9...
... Locking piece, 11 ... Door inner plate, 12 ...
...Door frame, 19...Insulation material. Name of agent Patent attorney Shigetaka Awano and one other person Kizu 1-1-79 Rf 1 Lee Sak-;

Claims (1)

[Claims] It is made of a plastic material and is integrally molded into a container shape with an open inner surface by an outer surface and four side surfaces, and on the peripheral edge of the side surfaces,
A support piece, a door outer plate having a locking piece integrally projecting from the support piece at a predetermined interval, a door inner plate covering an inner opening of the door outer plate, and a side peripheral edge of the door outer plate. A space formed by a door frame having a groove portion surrounding the door frame and having a groove portion into which a gasket mounting base is inserted, a support portion supporting an end portion of the door inner surface plate, the door outer surface plate, the door inner surface plate, and the door frame. Refrigerator door filled with foam insulation material.