KR19990021516U - Door sealing structure of refrigerator - Google Patents

Abstract

The present invention discloses a novel door sealing structure of a small refrigerator made of a synthetic resin material by the blow molding method.

The present invention includes a cabinet having a cavity in which food is stored and manufactured by a blow molding method, a door hinged to the front of the cabinet to open and close the cavity, a door manufactured by the blow molding method, and a cooling system for cooling the cavity to a predetermined temperature. In a small refrigerator, the cover flange extends from the front edge of the cabinet to enclose the door and maintains a constant distance from the main surface of the door, and is installed between the cabinet and the door when the door is closed to seal the two sides. Selectively attached to a corresponding gasket, a plurality of attachment pieces embedded in the cover flange inner side of the cabinet and having a predetermined polarity, and a corresponding attachment piece when the door is closed, having a polarity opposite to that of the cover flange and embedded in the main surface of the door A plurality of magnet locks are provided. Accordingly, the present invention can securely close the cabinet and the door of the small refrigerator made of a synthetic resin material by the blow molding method by a gasket, and there is no need to embed a magnet in the gasket as in the prior art.

Description

Door sealing structure of refrigerator

The present invention relates to a refrigerator, and more particularly, to a structure for sealing a door of a small refrigerator manufactured by blow molding.

As is well known, a refrigerator is a household appliance used to freeze and / or refrigerate food by a heat of evaporation of a refrigerant using a cooling cycle, as shown in FIG. 1. By cooling the cold air cooled by the fan (not shown) to the cavity 2 of the cabinet 1 by the fan, the food stored therein is frozen and / or refrigerated. Accordingly, the entrance 3 of the refrigerator cabinet 1 is provided with a door 3 that opens and closes the cavity 2 for storing and withdrawing food while shielding the cavity 2 from the outside.

On the other hand, in order for the refrigerator to perform its function stably, the circulating cold air in the cavity 2 should not leak to the outside but also hot air from outside should not be introduced into the cavity 2.

To this end, conventionally, as shown in FIG. 2, a gasket 4 having a magnet 5 is provided at an inner side edge of the door 3 so that the gasket is closed between the two doors when the door 3 is closed. (4) is interposed, and the magnet 5 is attached to the edge part of the front surface of the cabinet 1, and the cabinet 1 and the door 3 are sealed.

However, the cabinet (1) or the door (3) of such a conventional refrigerator is assembled with a cover (not shown) inside the metal panel (urethane) foam (urethane) foam that functions as a heat insulating material therein ( After filling 6), it has a complicated structure constituted by attaching a liner of a synthetic resin material to the inner side of the cover, which is very difficult and complicated to manufacture. In addition, it is necessary to include a rubber magnet (5) for fixing the door (3) in the closed state by being attached to the cabinet (1) inside the gasket (4) for sealing between the cabinet (1) and the door (3) The production of the bar and gasket 4 becomes very complicated.

Recently, in the case of a small refrigerator, a predetermined form is formed by a so-called "hollow molding method" in which a molded article of a sheet or pipe in which two pieces are glued together is put into a mold and blown with air to make a hollow product. After molding into a mold, a method of manufacturing the cabinet 1 and the door 3 by filling a urethane foam material therein has emerged.

However, when the cabinet 1 and the door 3 are made of synthetic resin by the blow molding method, the conventional sealing structure cannot be applied. Therefore, a new type of door sealing structure is required, but an appropriate sealing structure is required. Has not been provided.

It is an object of the present invention to provide a door seal structure of a small refrigerator in which cabinets and doors are made of a synthetic resin material by a blow molding method in view of the conventional problems as described above.

In order to achieve the above object, the door sealing structure of the refrigerator according to the present invention has a cavity in which food is accommodated and is manufactured by a blow molding method, and is hinged to the front of the cabinet to open and close the cavity to produce a blow molding method. A small refrigerator having a door and a cooling system for cooling the cavity to a predetermined temperature, comprising: a cover flange extending from the front edge of the cabinet to surround the door and maintaining a predetermined distance from the main surface of the door; Installed on the inner edge and interposed between the cabinet and the door when closed, a gasket for sealing both sides, a plurality of attachment pieces embedded in the inner surface of the cover flange of the cabinet and having a predetermined polarity, and embedded in the main surface of the door Opposite polarity with attachment piece of flange And a plurality of magnet lock (lock magnet) is complex is characterized in that configuration.

Accordingly, the present invention is particularly compact refrigerator because the gasket between the cabinet and the door of the small refrigerator made of synthetic resin by the blow molding method can be reliably contacted by the gasket and there is no need to embed the magnet in the gasket as in the prior art. It has a great effect on improving safety, reliability and manufacturability.

1 is a perspective view of a refrigerator schematically showing a conventional door sealing structure;

2 is a partially enlarged plan view of a refrigerator for explaining a conventional problem;

3 is an exploded perspective view of a refrigerator schematically showing a door sealing structure according to the present invention;

4 is a cross-sectional view taken along the line IV-IV of FIG.

5 is a cross-sectional view showing the combined state of FIG.

Figure 6 is a cross-sectional view showing an operating state of the subject innovation.

<Explanation of symbols for main parts of the drawings>

11: cabinet 12: cavity (of cabinet)

13 door 15 gasket

16: cover flange (of cabinet)

17: Attachment plate (of cabinet) 18: Magnet lock (of door)

19: housing (of magnet lock)

20: permanent magnet (magnet lock)

21: slide piece (of magnet lock)

22: cover (magnet lock) 22a: slot (of cover)

23: Rebound piece G of cabinet: gap between cover flange and door

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

3 to 5, the illustrated configuration is, for example, an intercooled small refrigerator, which includes a cabinet 11 having a cavity 12 in which food is stored, and a cavity (11) of the cabinet (11). A cooling system (not shown) for cooling the temperature 12 to a predetermined temperature and a hinge coupled to the front surface of the cabinet 11 to shield the cavity 12 from the outside and to store and withdraw food items. It is provided with a door 13 to open and close it, the cabinet 11 and the door 13 is composed of a synthetic resin material using a blow molding method for ease of manufacturing, etc. and then urethane foam material 14 to function as a heat insulating material therein. Is achieved by filling.

Meanwhile, in order to stably store food stored in the cavity 12 at a constant temperature, the circulating cold air in the cavity 12 should not leak to the outside, and hot external air should not flow into the cavity 12. Between the front of the cabinet 11 and the inner surface of the door 13 is provided with a sealing means for sealing both sides when the door 13 is closed, as shown in the cabinet 11 and the door 13 is a synthetic resin In the case of ash, a conventional gasket (4 in FIG. 2) having a magnet (5 in FIG. 2) cannot be used.

Therefore, the sealing means of the present invention is provided with a gasket 15 that contacts the front surface of the cabinet 11 without a magnet (5 in FIG. 2), in a conventional manner, on the inner edge portion of the door 13. In addition, the cover flange 16 extends to an appropriate length so as to surround the front edge of the cabinet 11, preferably the upper end and the lower end of the upper and lower main surfaces of the door 13, so that a predetermined polarity is applied to the inner side of each cover flange 16. Two attachment pieces 17 each having a recess are fixed to each other, and the upper and lower main surfaces of the door 13 are selectively attached to corresponding attachment pieces 17 of each cover flange 16 when the door 13 is closed. The magnet lock 18 which fixes the position 13 in the closed state is buried. To this end, the cover flanges 16 of the cabinet 11 are positioned to maintain a predetermined distance (G) with the upper and lower main surfaces of the door 13, respectively.

Meanwhile, in order to seal the cavity 12, the gasket 15 should be uniformly in close contact with the front surface of the cabinet 11 and the inner surface of the door 13, but one end of the door 13 is hinged to the cabinet 11. The gasket 15 can be configured to be in close contact with both by appropriately setting the spacing therebetween, so that the attachment piece 17 and the magnet lock 18 of the present invention are preferably formed of the door 13 facing the hinge portion. It is located on the free end side.

The magnet lock 18 may be configured in various forms, for example, may be configured as shown. That is, the permanent magnet 20 having the opposite polarity to the attachment piece 17 is installed in the inner middle of the housing (19), the permanent magnet 20 in the interior of the housing 19 to both sides of the permanent magnet (20). 2 slide pieces 21 of metal attached to the corresponding attachment pieces 17 of the cabinet 11 by protruding outward when the door 13 is closed, and the housing 19 It has a configuration in which a cover 22 for shielding it and having a slot 22a for protruding the two slide pieces 21 in the opening of the. At one end of the two slide pieces 21, locking projections 21a are formed on the inner surface of the cover 22 at the time of protruding so as to prevent the separation from the housing 19.

In this case, however, when the door 13 is opened, the two slide pieces 21 of the magnet lock 18 protruding to the outside of the housing 19 do not return to the initial position but remain protruding to open the door 13. When opening and closing, it is accompanied by the hassle of pressing the slide piece 21 protruding one by one into the housing 19. Accordingly, the magnet is preferably located outside the attachment piece 17 on the cover flange 16 of the cabinet 11 to push the protruding slide piece 21 to return to the initial position when the door 13 is opened. A rebound piece 23 having the same polarity as that of the permanent magnet 20 of the lock 18 is further provided. The repulsive piece 23 not only serves to return the slide piece 21 of the magnet lock 18 but also imparts smoothness of the opening and closing operation to the door 13 when the door 13 is opened and closed.

Meanwhile, the present invention attachment piece 17, the rebound piece 23, and the magnet lock 18 may be fixed to the cabinet 11 and the door 13 in various ways, preferably the cabinet 11. And insert molding during molding of the door 13 and are integrally formed in each. The attachment piece 17 and the rebound piece 23 need only be able to be attached or pushed with the slide piece 21 of the magnet lock 18, and may be composed of a metal magnetic material or a permanent magnet having a predetermined polarity.

The operation of the refrigerator door sealing structure according to the present invention having the structural features as described above will be described with reference to FIG. 6.

In FIG. 6, (a) is a state in which the door 13 is closed, and two slide pieces 21 of the magnet lock 18 magnetized by the permanent magnet 20 pass through the slot 22a of the cover 22. The door 13 is fixed to the cabinet 11 in a closed state by being attached to the attachment pieces 17 of the cabinet 11 having the opposite polarity by protruding to the outside. Then, the gasket 15 provided on the inner edge of the door 13 is uniformly adhered to both sides by the hinge part of the door 13, the magnet lock 18, and the attachment pieces 17, thereby closing the cavity 12. It is shielded from the outside.

In this state, when the door 13 is opened as shown in (b), the slide piece 21 of the magnet lock 18 is isolate | separated from the attachment pieces 17 of the cabinet 11 by the external force. Subsequently, when the slide piece 21 opposes the repulsion piece 23 of the cabinet 11 with continued opening, the slide piece 21 which protruded by the repulsive force of the same polarity is pushed, and the housing of the magnet lock 18 is pushed. (19) will be inserted into.

When the next open door 13 is closed again, as shown in (a), the slide piece 21 of the magnet lock 18 protrudes to the outside of the housing 19 by the opposite polarity attraction and the cabinet 11 The door 13 is kept closed by being attached to the attachment piece 17).

As described above, according to the present invention, the cabinet and the door of the small refrigerator made of synthetic resin using the blow molding method can be safely sealed by a gasket as in the case of a conventional metal refrigerator. The two parts can be sealed without a magnet. As a result, food stored in the cavity can be stably frozen and refrigerated, and the gasket can be manufactured very easily.

Therefore, the present invention has an excellent effect of improving the reliability, stability of use and manufacturability of a small refrigerator made of a synthetic resin material by the blow molding method.

Claims (5)

A small refrigerator having a cabinet having a cavity in which food is stored and manufactured by a blow molding method, a door hinged to the front of the cabinet to open and close the cavity, a door formed by the blow molding method, and a cooling system cooling the cavity to a predetermined temperature. To A cover flange 16 extending from the front edge of the cabinet 11 to surround the door 13 and maintaining a predetermined distance G from the main surface of the door 13; A gasket (15) installed at an inner edge of the door (13) and interposed between the cabinet (11) and the door (13) when closed to seal the two; A plurality of attachment pieces 17 embedded in the inner surface of the cover flange 16 of the cabinet 11 and having a predetermined polarity; A plurality of magnets embedded in the main surface of the door 13 and having a polarity opposite to that of the attachment piece 17 of the cover flange 16 and selectively attached to the corresponding attachment piece 17 when the door 13 is closed; The door sealing structure of the refrigerator characterized by including a lock (18). The method of claim 1, wherein the magnet lock 18, The housing 19, A permanent magnet 20 fixed to the inner middle of the housing 19 and having a polarity opposite to that of the attachment piece 17; A cover 22 coupled to the housing 19 to shield the opening; The cabinet 11 is accommodated in the housing 19 so as to be attached to both sides of the permanent magnet 20, and protrudes outward through the slot 22a of the cover 22 when the door 13 is closed. Door sealing structure of the refrigerator, characterized in that consisting of two slide pieces (21) attached to each of the attachment piece (17). 2. The cover flange (16) according to claim 1, further comprising a repelling piece (23) embedded in the cover flange (16) to be located outside said attachment piece (17) and having the same polarity as said magnet lock (18). Door sealing structure of the refrigerator. The door sealing structure of a refrigerator according to any one of claims 1 to 3, wherein the attachment piece (17) and the rebound piece (23) are made of a metal magnetic material or a permanent magnet having a predetermined polarity. 5. The method according to claim 4, wherein the attachment piece (17), the rebound piece (23) and the magnet lock (18) are insert-molded and integrally formed when the cabinet (11) and the door (13) are formed. Door sealing structure of the refrigerator.