KR19990043744A - Door assembly of refrigerator - Google Patents

Abstract

The present invention discloses a door assembly of a refrigerator.

The present invention, in the door assembly is hinged rotatably coupled to selectively open and close the freezer compartment and the refrigerating compartment of the cabinet, the injection molding is made of plastic, the insertion groove 121 of a predetermined depth in the longitudinal direction along the edges on both sides is Formed trauma 120; It is combined with the outer shell 120 to form a space portion (100a) to be filled with the urethane foam 130, the inner side 110 is formed on both sides extending the flange 111 is inserted into the outer box in the longitudinal direction; The support rib 141 is extended to be inserted into the insertion groove 121 of the outer box 120 to be fixed to the inner side, and the magnet M contacted to one side surface of the cabinet 10 is in close contact with the outer side thereof. Built-in gasket 140; as a replacement, the outer wound with a plastic molding, there is an effect to reduce the unit cost and in particular the weight of the entire cabinet.

In addition, it is possible to reduce the cost and workability because it is possible to fix the inner wound that forms the gasket and the inside of the door to prevent the leakage of cold air without a separate fixing screw.

Description

Door assembly of refrigerator

TECHNICAL FIELD The present invention relates to a refrigerator, and more particularly, to a door assembly configured to selectively seal a cabinet of a refrigerator.

In general, a refrigerator includes a cabinet 10 having a rectangular box shape as shown in FIG. 1, and the cabinet 10 includes a freezer compartment 20 and a refrigerating compartment through an intermediate partition 11 installed at an intermediate portion. It is divided into 30. In addition, each of the freezing compartment 20 and the refrigerating compartment 30 is selectively opened through upper and lower door assemblies 40 and 50 hinged to the front of the freezing compartment 20 and the refrigerating compartment 30.

On the other hand, the lower part of the rear of the cabinet 10 is provided with a compressor (compressor; 1) and a condenser (condensor), a cooling fan, etc., which forms a cooling cycle.

Therefore, the cold air generated through the cooling cycle of the compressor 1 and the condenser and the evaporation period is forcibly introduced into the freezing compartment 20 and the refrigerating compartment 30 through a blower fan (not shown) to freeze and store the foods stored therein. Refrigerate.

At this time, in circulating the cold air in the freezer compartment 20 and the refrigerating compartment 30, in order to increase the cooling effect, it must be sure to block the leakage of cold air to the outside, which is the freezer compartment 20 and the refrigerating compartment It is made through the upper and lower door assemblies 40 and 50 located in front of the (30).

In FIG. 2, the lower door assembly 50 is illustrated in the upper and lower door assemblies 40 and 50 to prevent such leakage of cold air.

As shown therein, the lower door assembly 50 includes a door 51 composed of an inner wound 51a and an outer wound 51b, and in particular, cold air is formed between the inner and outer wounds 51a and 51b of the door 51. The space part 51c which can fill the urethane foam agent 52 for blocking the temperature rise by external air is formed.

In addition, a door cap (not shown) for preventing the urethane blowing agent 52 from leaking to the outside is coupled to the coupling portion between the inner wound 51a and the outer wound 51b.

In order to prevent the leakage of cold air to the contact portion between the inner box (51a) and the cabinet 10, to protect from strong impact during opening and closing of the door 51, the gasket (54) of the soft resin to improve the feel It is fixed to the inner box 51a.

At this time, a magnet (M) (M) is built in the inner surface of the gasket 54 so as to maintain the sealed state in close contact with the cabinet 10.

However, such a conventional door assembly has problems listed below.

First, a separate fixing screw (S) is required to fix the gasket (54) to the inner (51a), and also a door cap (53) to prevent the gap between the inner and outer (51a, 51b). As a result, a problem that causes a unit price increase due to the increase in the number of parts is caused

Second, since both the inner box 51a and the outer box 51b are formed of steel, the weight of the entire door 51 is weighted, which makes it difficult to transfer the cabinet 10, and in particular, the door 51. There are many problems inherent, such as a phenomenon that sag occurs in one direction.

The present invention was created in order to solve such a conventional problem, it is possible to reduce the number of parts to reduce the cost, in particular to reduce the weight of the door assembly of the refrigerator that can prevent the sag of the door The purpose is to provide.

In order to achieve the above object, the door assembly of the refrigerator according to the present invention is a door assembly which is hinged to be rotatably hinged to selectively open and close the freezer compartment and the refrigerating compartment of the cabinet, which is injection molded from plastic and is formed along both edge surfaces thereof. The trauma and the insertion groove of the predetermined depth in the longitudinal direction; An inner wound in which the flange is inserted into the outer wound along the longitudinal direction to form a space portion in combination with the outer wound so as to fill the urethane foam; The support ribs are extended to be inserted into the insertion grooves of the outer casing and fixed to the inner side, and the outer side thereof includes a gasket having a magnet built into and in close contact with one side of the cabinet.

1 is a cross-sectional view of a typical refrigerator.

Figure 2 is an enlarged cross-sectional view of the main portion of the conventional door assembly.

Figure 3 is an enlarged cross-sectional view of the main portion of the door assembly according to the present invention.

Explanation of symbols on the main parts of the drawings

10: cabinet 20: freezer

30: refrigerator compartment 40, 50: upper and lower door assembly

100: (lower) door 100a: space part

110: inner wound 111: flange

111a, 141a: hook 120: trauma

121: insertion groove 130: urethane foam

140: gasket 141: support rib

142: auxiliary rib M: magnet

Hereinafter, a preferred embodiment of a door assembly of a refrigerator according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an enlarged cross-sectional view illustrating main parts of the door assembly according to the present invention.

Hereinafter, a description will be given with reference to FIG. 1 and like reference numerals refer to like parts.

First, referring to FIG. 1, a cabinet (cabinet) 10 having a rectangular box shape is provided, and the cabinet 10 is connected to the freezing chamber 20 and the refrigerating chamber 30 through an intermediate partition 11 installed at an intermediate portion. Compartments are formed. In addition, each of the freezing compartment 20 and the refrigerating compartment 30 is selectively opened through upper and lower door assemblies 40 and 50 hinged to the front of the freezing compartment 20 and the refrigerating compartment 30.

On the other hand, the lower part of the rear of the cabinet 10 is provided with a compressor (compressor; 1) and a condenser (condensor), a cooling fan, etc., which forms a cooling cycle.

Therefore, the cold air generated through the cooling cycle of the compressor 1 and the condenser and the evaporation period is forcibly introduced into the freezing compartment 20 and the refrigerating compartment 30 through a blower fan (not shown) to freeze and store the foods stored therein. Refrigerate.

At this time, in circulating the cold air in the freezer compartment 20 and the refrigerating compartment 30, in order to increase the cooling effect, it must be sure to block the leakage of cold air to the outside, which is the freezer compartment 20 and the refrigerating compartment It is made through the upper and lower door assemblies 40 and 50 located in front of the (30).

In FIG. 3, in particular, the lower door assembly 50 is illustrated in the upper and lower door assemblies 40 and 50 to prevent external leakage of cold air.

As shown therein, the lower door assembly 50 includes a door 100 having a substantially rectangular shape.

At this time, the door is composed of the inner wound 110 and the outer wound 120, the outer wound 120 is injection molded of plastic, in particular, both sides are formed with an insertion groove 121 of a predetermined depth along the longitudinal direction.

The inner wound 110 is combined with the outer wound 120 to form a predetermined space portion 100a therebetween. The inner wound 110 is thermally insulated by the space portion 100a formed by the combination of the inner wound 110 and the outer wound 120. The urethane foam 130 for (iii) is filled.

In addition, flanges 111 which are inserted into the insertion grooves 121 of the outer shell 120 are formed on both side surfaces of the inner box 110 in the longitudinal direction.

On the other hand, the gasket (140) to cushion the shock of the contact with the cabinet 10 during the opening and closing of the door 100 or to prevent the external leakage of cold air due to the gap between the door 100 and the cabinet 10. ) Is provided.

The gasket 140 is formed of a soft resin, and the support rib 141 extends to one side inner surface to be inserted into the insertion groove 121 formed on the outer case 120. The auxiliary rib 142 is formed to extend to a predetermined length so as to be in close contact with the outer surface of the inner box 110 in the vertical direction.

In addition, the outer surface of the gasket 140 is a part in contact with the cabinet 10, and a magnet (M) is installed along the longitudinal direction so as to be completely in contact with the cabinet 10.

On the other hand, since the flange 111 extending from the inner wound 110 and the support rib 141 extending from the gasket 140 are inserted into the insertion groove 121 of the outer wound 120, the mutual insertion between the grooves 121 is performed. Hooks 111a of opposite shapes to be fixed to the end of the flange 111 and the end of the support rib 141 in order to improve the adhesion and at the same time block the protrusion of the insertion groove 121 outside the urethane foaming process It would be desirable to further extend 141a).

Referring to the assembly process of the door assembly according to the present invention configured as described above, in the state in which the support rib 141 of the gasket 140 is inserted into the insertion groove 121 formed in the longitudinal direction on both sides of the trauma 120 initially Insert the flange 111 formed on both sides of the inner box 110.

At this time, the interference with the gasket 140 occurs in the process of inserting the flange 111 of the inner box 110, but because the gasket 140 is molded of a soft resin can be easily inserted.

In such a state that the flange 111 of the inner box 110 and the support rib 141 of the gasket 140 are inserted and inserted, they are held in a locked state by the hooks 111a and 141a extending at their respective ends. Done.

In this state, when the urethane foam 130 for thermal insulation is filled into the space portion 100a of the inner wound 110 and the outer wound 120, as shown in FIG. It is introduced into the insertion groove 121 of the 120, and as a result, the gasket 140 and the inner wound 110 in the urethane foam 130 is located in the outer shell 120 formed of a rigid plastic without a separate fixing means It is to be fixed, and by maintaining sufficient strength between each other to obtain the effect of weight reduction through the outer shell 120 formed of plastic, in addition to the screw for fixing the gasket 140 is unnecessary.

At this time, the present invention described above, the lower door assembly 50 has been described by way of example, the same applies to the upper door assembly 40.

On the other hand, the above-described embodiment is merely described one preferred embodiment of the present invention, the scope of application of the present invention is not limited to such, and can be changed as appropriate within the scope of the same idea. For example, the shape and structure of each component shown in the embodiment of the present invention can be modified.

As described above, according to the door assembly of the refrigerator according to the present invention, the outer case is replaced with a plastic molded article, and thus, there is an effect of reducing the unit cost and particularly reducing the weight of the entire cabinet.

In addition, it is possible to reduce the cost and workability because it is possible to fix the inner wound that forms the gasket and the inside of the door to prevent the leakage of cold air without a separate fixing screw.

Claims (2)

In the door assembly rotatably hinged to selectively open and close the freezer compartment and the refrigerating compartment of the cabinet, An outer mold which is injection-molded in plastic and has an insertion groove having a predetermined depth in a longitudinal direction along both edges thereof; An inner wound in which the flange is inserted into the outer wound along the longitudinal direction to form a space portion in combination with the outer wound so as to fill the urethane foam; The support rib is extended to be inserted into the insertion groove of the outer shell on the inner side to be fixed in position, the outer side of the refrigerator gasket comprising a magnet built in contact with the one side of the cabinet in close contact with the Door assembly. The door assembly of claim 1, wherein hooks having opposite shapes are formed on the flanges of the inner shell inserted into the insertion grooves of the outer shell and the supporting ribs of the gasket, respectively.