KR20030017309A - Magnet gasket structure of refrigerator door - Google Patents

Abstract

PURPOSE: To provide a magnetic gasket. structure of a refrigerator door with a sufficient adhering sealing performance, an excellent appearance and a simple structure, wherein the elasticity of a bag-shaped part of a gasket in the opening/ closing directions at a welded corner part is not deteriorated when the door is opened and closed. CONSTITUTION: A soft resin is extruded to form the gasket comprising a magnet holding part (12) containing a magnet (15) attracting the circumference (3a) of an opening of a refrigerator main body, a mounting part (13) to the door side and a thin-walled bag-shaped part (14) elastically connecting the magnet holding part and the mounting part with each other. Its ends are cut and butt- welded with each other to form the gasket (11) into a frame shape. The bag- shaped part in the vicinity of the corner welded part is cut out (16) in a specified range toward the magnet holding part side. Thus, the magnetic gasket structure is produced.

Description

Magnet Gasket Structure for Refrigerator Door {MAGNET GASKET STRUCTURE OF REFRIGERATOR DOOR}

The present invention relates to a magnet gasket structure having a magnet mounted on a circumferential edge of the back side of a refrigerator door.

Conventionally, the magnet gasket 51 of the refrigerator door has a magnet which is formed by a soft synthetic resin material and adsorbed to the front opening surface of a thin steel outer case which forms the refrigerator main body while being formed of soft synthetic resin material. One magnet holding portion 52, a wedge-shaped mounting portion 53 to be fitted into the gasket holding recess formed on the inner circumference of the door, and the magnet holding portion 52 and the mounting portion 53 can be flexibly connected. It is a structure provided with the cross section which consists of a thin bag-shaped part 54. As shown in FIG.

Each cross section is cut at an inclination angle of 45 degrees so that the cross-section is formed into a long elongated shape by extrusion molding, and four sides are provided at an inclination angle of 45 degrees, and the edges of the ends are welded to each other. (57) so that the corners are formed in a frame shape at right angles and mounted on the rear circumference of the door.

When the gasket 51 is mounted on the circumference of the door, a thin bag portion 54 is stretched in accordance with the opening and closing of the door to the mounting portion 53 and the magnet holding portion 52 adsorbed on the outer case surface. While maintaining the close sealing time of the door surface to the front opening, the close contact action of the close surface performs smooth door opening and closing operation.

However, the cross-sectional shape of the gasket 51 at the time of opening the door is such that the magnet holding portion 52 tries to maintain the adsorption state, and the mounting portion 53 is opened along with the door to extend along the opening and closing direction of the door. 54) is modified.

Then, the bag-shaped portion 54 of the gasket extends in the opening and closing direction, and the cross section in the vertical width direction corresponding to the extending direction contracts on the contrary.

5 to 6 illustrate this, the cross section of the gasket 51 is cut at an angle of 45 degrees, and the cut sections are brought into contact with each other, and at the time of corner welding 57, the gasket unit 54 is formed of a gasket unit. The width dimension A of) is as shown in (a) of FIG. 5, but when the bag-shaped portion 54 at the time of opening the door is in an extended state in this state, as shown in (b) of FIG. 5, the gasket is a bag. It contracts by the width direction dimension A 'with respect to the elongation of the shape part 54 in the opening direction, and becomes A> A'.

As a result, since the inside of the frame-shaped corner welding part 57, ie, inside of a refrigerator, is welded over the whole cross-sectional shape as shown to FIG. 6 (b) with respect to FIG. 6 (a) of a normal state, The joint angles of the outer and inner corners of the bag-shaped portion 54 become acute angles of 45 degrees or less, so that the elongation in the opening and closing direction of the door and the contracting force in the width direction pull the joint surfaces of the corners together.

Then, at the inner junction with respect to the opening / closing direction of the door, A> A 'is in a contracted state, and the bag-shaped part 54 cannot obtain free stretching action, resulting in a problem that the elongation of the door opening direction is insufficient. do.

Moreover, in the outer side of the corner welding part 54, it becomes a state which presses mutually in the width direction with respect to the elongation of the bag-shaped part 54 at the time of door opening, and becomes a state which wrinkles generate | occur | produces, but the expansion-and-closing action in the opening-and-closing direction of a bag-shaped part 54 is carried out. Does not affect.

In the conventional gasket, when the bag portion 54 is sealed against the expansion and contraction of the gasket during the opening and closing of the door, expansion and contraction becomes difficult due to the air pressure in the bag portion, so that the gasket is viewed from the mounting portion 53 side. As shown in Fig. 7, the permeation hole 59 is drilled and installed in a part of the bag to enable air flow in and out of the bag, and the elastic action is effectively performed. Since it is not a direction of opening / closing the door in a thick portion in the flat portion near the mounting portion 53, it has no relation to the stretching action of the bag-shaped portion 54 for the above phenomenon.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned point, and it is possible to secure sufficient close sealability without sacrificing the elasticity in the opening and closing direction of the gasket bag-shaped portion at the corner welded portion at the time of opening and closing of the door, and at the same time, the refrigerator having a good appearance and simple appearance It is an object to provide a magnet gasket structure of a door.

1 is a perspective view showing the whole of the refrigerator of the present invention,

2 is an enlarged cross-sectional view of a door gasket portion according to the first embodiment of the present invention;

3 is a cross-sectional detail view showing a state in which the bag-shaped portion extends in the opening and closing direction when the door of the magnet gasket shown in FIG. 2 is opened;

4 is a plan view of the magnet gasket shown in FIG. 3 seen from the mounting side;

(A) is sectional drawing which shows the conventional magnet gasket, (b) is sectional drawing which shows the state which the bag-shaped part of the gasket shown in (a) extended in the opening-and-closing direction at the time of opening a door,

6 (a) is a plan view of a main part showing a corner joint of a conventional magnet gasket, (b) is a plan view showing a state in which the bag-shaped part of (a) extends in the opening and closing direction when the door is opened, and

7 is a plan view showing a conventional configuration of FIG.

* Explanation of symbols for main parts of the drawings

2: refrigerator body 5: refrigerator

8: refrigerator door 11, 51: magnet gasket

12, 52: magnet holder 13, 53: mounting portion

14, 54: bag 15: magnet

16: incision 17, 57: corner weld

18: fillet 19: door lining

20: mounting recess 21: protruding end

59: through hole

In order to solve the above problems, the magnet gasket structure of the refrigerator door according to the invention described in claim 1 includes a magnet holding part for accommodating a magnet adsorbed to an edge around an opening of a refrigerator main body, a mounting part on a door side, the magnet holding part and a mounting part. A gasket made of a thin bag-shaped part which is freely stretched and connected freely is extruded by a soft resin, and the cross-sections are cut and welded together to form a frame shape, and the bag-shaped part in the vicinity of the corner welding part is predetermined toward the magnet holding part. It is characterized in that it is cut out over a range, and this configuration enables the gasket to be kept in close contact with the inside and outside of the refrigerator without impairing the elasticity in the opening and closing direction of the bag-shaped portion at the time of opening and closing of the door, and to easily maintain a good appearance. And inexpensive configuration.

The invention described in claim 2 is characterized in that the bag-shaped portion is cut out from the inside of the refrigerator of the corner welded portion, and a structure can be obtained which effectively maintains the stretch force inside the refrigerator which affects the stretching action of the bag-shaped portion.

The invention described in claim 3 is characterized in that an end portion protruding from the inner plate of the door is provided adjacent to the inside of the refrigerator of the cutout portion provided in the bag shape portion. It characterized in that the fillet extending into the refrigerator in the form, because the incision of the bag-shaped portion is concealed by the protruding end, the incision is not visible to the user even when the door is opened, and the incision is completely made by the fillet It can be concealed to maintain a better appearance, while at the same time eliminating air convection to obtain a better thermal insulation effect.

The invention as set forth in claim 5 is characterized in that the inner bag-shaped portions near the frame-shaped corners are cut out over a predetermined range toward the magnet holding portion, and the corner sections are welded to each other to be welded together. Can be run at about the same time, simplifying the manufacturing process.

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of this invention is described based on drawing. The refrigerator 1 shown in FIG. 1 divides the front opening into several insulated partition walls 4 to form a plurality of independent spaces in the refrigerator, each of which is a refrigerator compartment 5, a freezer compartment 6, or a vegetable compartment 7. A heat insulating case body 2 which forms a storage compartment suitable for a storage temperature of food by cooling and controlling it to a predetermined temperature such as a refrigerator, and a refrigerating compartment door 8 or a freezing compartment door 9 provided for each of the storage compartment openings of the insulation case main body. Etc.

Among each of the doors, the refrigerating chamber door 8 is pivotally installed on one side of the hinge 10 mounted on one side of the front opening and rotated freely, and the other storage chamber door is formed to be pulled out.

In addition, a magnet gasket 11 is mounted on the rear circumference of each door, so that a gap between the front opening circumference rim 3a of the outer case 3 forming the refrigerator main body 2 and the circumference of the door 8 is provided. Is sealed to thermally block the inside and the outside of the storage compartment and prevent heat leakage, such as a heat insulating material filled in the body wall surface, thereby controlling and maintaining the inside of the storage compartment at a predetermined temperature.

In FIG. 2, the enlarged structure of the magnet gasket 11 part in the opening part of the refrigerating chamber 5 is shown, This basic structure is the same also in any one of said storage doors.

The magnet gasket 11 has a cross-sectional shape consisting of a magnet holding portion 12, a mounting portion 13 on the inner side of a door, and a thin bag portion 14 which freely stretches and connects them, and has a long string shape made of a soft synthetic resin. The extruded product was cut at an inclination angle of 45 degrees and the end faces were heated and welded to each other to form a frame shape along the circumference of the back surface of the door.

In the magnet holding part 12, a soft magnetic body 15 having a mixture of soft rubber and magnetic powder is inserted and disposed, which is formed on the collar portion 3a forming the front opening of the outer case 3 made of steel. It is blocked by adsorption to seal the inside and outside of the refrigerator in an airtight manner.

The mounting portion 13 has a wedge-shaped anchor shape protruding downward from a thick base, and is fitted into a mounting recess groove 20 formed undercut in four circumferences of the door inner plate 19 to prevent the gasket 11 from being pulled out. To keep it.

The bag portion 14 is formed by connecting the magnet holding portion 12 and the mounting portion 13 with thin materials on both sides to form a bag, and the gasket 11 is formed by the bag portion 14. 2, the opening and closing direction of the door 8 can be expanded and contracted, and the absorbing force of the magnet holding part 12 is absorbed when the door is opened, thereby relieving the opening force of the door, and the outer case collar of the magnet when the door is closed. It has a buffering function of the closing force of the door which arises in the part 3a.

In the inner vicinity of the corner welded part 17 of the gasket 11, as shown in FIG. 3 and FIG. 4 which is the top view seen from the mounting part 13, the intermediate part of the said bag | shaft part 14 in a part of the mounting part 13 is shown. The incision part 16 which cut | disconnected in the predetermined range toward the magnet holding | maintenance part 12 over is formed.

This cut-out portion 16 eliminates the mutual pulling action of the bag-shaped portions 14 in the width direction perpendicular to the opening and closing direction at the inner side of the corner welded portion 17 at the time of opening the door. It is possible to obtain a smooth door opening and closing operation.

The cutout 16 is installed on the outer surface of the inner side of the corner weld 17, and inside the cutout 16, a door inner plate ( In the vicinity of the gasket mounting portion of 19), the end portion 21 inside the refrigerator is protruded to be adjacent to each other, and the cutout portion 16 is concealed by the protruding end portion 21, so that the cutout portion 16 is opened even when the door is opened. It is not noticeable to the user and does not interfere with the appearance.

Also, as shown in FIG. 2, the fillet extends toward the protruding end portion 21 of the door inner plate 19 around the entire upper inner circumference of the bag holding portion 14 toward the magnet holding portion 12 as shown in FIG. 18, the incision 16 is completely concealed by the fillet 18, thereby maintaining a better appearance and at the fillet 18, the bag 14, and the end 21. As a result, new thermal insulation compartments can be formed to further improve the thermal insulation effect inside and outside the refrigerator.

In addition, in the above embodiment, the gasket main body extruded into a long string shape was cut, the end faces were welded to each other, and the cut-out portion 16 was formed in the bag shape for processing into a frame shape. Not only this but after extrusion molding, the inner bag shape near the frame-shaped corner may be cut out over a predetermined range toward the magnet holding part at the time of the inclined cutting of the corner section, and the corner part may be welded thereafter, or The same constitution and effect can be obtained by melting and forming the cutout at the same time as welding welding.

In addition, the mounting portion of the gasket is not limited to the fitting structure to the door inner plate, but may be adhesive or screw fixing, and furthermore, the gasket made of the door part and the soft resin can be applied to the integrated structure. In the vicinity of the corner welded portion of the bag-shaped portion, an incision in the opening and closing direction of the door can be formed to exhibit the same effect.

As described above, according to the invention of the magnet gasket structure of the refrigerator door according to claim 1, the inside and the outside of the refrigerator can be tightly sealed while the elasticity in the opening and closing direction of the bag-shaped portion is maintained well when the door is opened and closed. In addition, a good gasket can be obtained in a simple and inexpensive configuration.

According to the invention described in claim 2, it is possible to effectively maintain the stretch force inside the refrigerator which affects the stretch action of the bag portion.

According to the invention described in claim 3, the cutout portion of the bag-shaped portion is concealed by the adjacent protruding end portion, so that the user does not notice when opening the door, and according to the invention described in claim 4, the incision portion is completely made by the fillet. It can be concealed to maintain a better appearance and at the same time can eliminate the air convection inside the refrigerator to obtain a better thermal insulation effect.

According to the invention described in claim 5, the cutting operation of the corner portion and the formation of the incision portion can be performed in almost the same process, and the manufacturing can be simplified.

Claims (5)

A soft resin is extruded by a soft resin into a gasket comprising a magnet holder for accommodating a magnet adsorbed to an edge of an opening of the refrigerator main body, a mounting part on the door side, and a thin bag-shaped part for freely stretching the magnet holder and the mounting part. A magnet gasket structure for a refrigerator door, characterized in that the sections are cut and welded to each other to form a frame shape, and the bag-shaped portion near the corner weld portion is cut out over a predetermined range toward the magnet holding portion. The method of claim 1, A magnet gasket structure for a refrigerator door, characterized in that a bag-shaped portion is cut out from the inside of a refrigerator of a corner welding portion. The method of claim 2, A magnet gasket structure for a refrigerator door, wherein an end portion protruding from the inner plate of the door is installed adjacent to the inside of the refrigerator of the cutout portion installed in the bag. The method of claim 2, A magnet gasket structure for a refrigerator door, wherein a fillet extending into the refrigerator is formed in a bag-shaped part of the magnet holding part at the incision part. The method of claim 1, A magnet gasket structure for a refrigerator door characterized in that the corner bags are welded to each other after the inner bag-shaped portion near the frame-shaped corner is cut in a predetermined range toward the magnet holding portion.