JP2005188840A - refrigerator - Google Patents

Abstract

[PROBLEMS] To increase the magnetic force of a magnet gasket that is attracted to an opening of a refrigerator main body with a simple configuration so as to obtain a sufficient door attracting force, and to improve heat conduction performance to improve cooling capacity and exposure to the outside of the refrigerator. A refrigerator having improved anti-sticking performance is provided.
SOLUTION: A magnet holding portion 13 that holds a long string magnet 17 that is formed of a soft resin and is attracted to the peripheral edge 2a of the opening of the refrigerator main body, an attachment portion 15 on the door 9 side, and the magnet holding portion. A magnet gasket 11 having a thin-walled bag-like portion 16 that connects the attachment portion to each other in a stretchable manner, and has the outer flat surface 17a of the magnet held by the magnet holding portion adsorbed directly to the opening surface of the refrigerator body. It is attached to the back of the door that closes the opening of the main body.
[Selection] Figure 2

Description

  The present invention relates to a refrigerator in which a magnet gasket with a built-in magnet is attached to the periphery on the back side of a door.

  Conventionally, the magnet gasket (51) that is attached to the rear surface of the refrigerator door and seals the cold air around the front opening of the refrigerator body is formed of a soft synthetic resin material as shown in FIG. In addition, a magnet holding part (63) with a built-in magnet (67) attracted to the front opening of the thin steel plate outer box (52) that forms the refrigerator body, and a gasket formed on the inner periphery of the door (64) A wedge-shaped attachment portion (65) fitted in the holding groove (64a), and a thin bag-like portion (66) for connecting the magnet holding portion (63) and the attachment portion (65) in a telescopic manner; It was comprised with the cross section which consists of.

  The gasket (51) is formed by forming the cross-sectional body into a long string by extrusion molding, and cutting each end face at an inclination angle of 45 degrees so as to be attached to the rear side periphery of the door (59). Four sides are provided, but the edges are butted together and welded to form a frame with a right corner, and fitted into the retaining groove (64a) on the inside (64) of the door. When the gasket (51) is attached to the periphery of the door, the thin bag-like part (66) is attached to the door (59) with respect to the attachment part (65) and the magnet holding part (63) attracted to the outer box surface. ) To expand and contract in accordance with the opening and closing of the door, and maintain the close contact state of the door surface with the front opening of the refrigerator body.

  A high-temperature refrigerant pipe (62), which is a part of the condenser in the refrigeration cycle, is disposed on the back heat insulating material (53) side of the flange (52a) of the outer box with which the gasket (51) abuts. Yes. This is because a part of the collar part (52a) is exposed to the inside (56) side, so that the outer box collar part (52a) made of a thin steel plate is cooled by the cooling air in the storage chamber, and is removed by heat conduction. Condensation is formed on the outside surface of the box (52), and when it is hot and humid, it is configured to prevent the dew from dropping on the floor, but on the other hand, the outer box collar (52a) heated by heat conduction Due to the temperature, the air temperature in the storage chamber (56) rises.

  As a structure for this, in addition to the above structure, the bag-like portion (66) connected to the magnet holding portion (63) is bulged toward the interior (56) side as shown in FIG. The bag-like portion (66) is brought into contact with the flange portion (54a) of the inner box (54) engaged with the flange portion (52a) of the outer box by the surface of the bulged bag-like portion (66). The cover of the front opening of the main body and the engagement flanges (52a) (54a) of the inner box were widely covered, and a double air chamber was formed between the inside and outside of the cabinet to perform sealing. .

  However, since the magnet (67) in the magnet gasket (51) configuration is built in the magnet holding part (63) formed of a soft resin, the magnet (67) in the closed state and the front surface of the outer box (52) Since a thin but non-magnetic soft resin layer is interposed between the opening (52a), which is the opening surface, the magnetic force of the magnet (67) is significantly attenuated.

  Therefore, unless the magnetic force of the magnet (67) is increased, sufficient adsorption power to the refrigerator main body cannot be obtained, and the size of the magnet (67) and the magnet gasket (51) itself is increased, resulting in high cost. At the same time, the gap between the outer box (52) and the door (59) is increased, which is a factor that impairs the appearance design of the refrigerator.

  In addition, the heat shut-off performance at the gasket is not necessarily large, so heat from the inside to the outside of the box is likely to leak, and the cooling performance inside the box (56) deteriorates, or due to the effect of leakage of cold inside the box. There was a drawback that condensation was likely to occur near the outer box opening surface (52a) outside the refrigerator.

  The present invention has been made in consideration of the above points, and the magnetic force of the magnet gasket that is attracted to the opening of the refrigerator main body is increased by a simple configuration so as to obtain sufficient door attracting force, and heat conduction performance. It aims at providing the refrigerator which improved the cooling capacity and the dew prevention performance to the outside of a warehouse.

  In order to solve the above-mentioned problem, the refrigerator of the present invention is formed of a soft resin and holds a long string magnet that is attracted to the periphery of the opening of the refrigerator main body, an attachment portion to the door side, A magnet having a thin bag-like portion that connects the magnet holding portion and the attachment portion in a telescopic manner, and the outer flat surface of the magnet held by the magnet holding portion is directly adsorbed to the opening surface of the refrigerator body The gasket is attached to the back of the door that closes the opening of the main body.

  According to the refrigerator with the magnet gasket according to the present invention, since the magnet portion directly contacts the opening of the main body, it is possible to obtain a sufficient adsorbing force without attenuating the magnetic force and to reduce the size of the gasket main body. In addition, it is possible to improve the cooling efficiency by good heat insulation inside and outside the cabinet and contribute to the reduction of power consumption of the refrigerator, and to improve the dewproofing performance of the outer surface of the refrigerator main body.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The refrigerator main body (1) shown in FIG. 1 forms a storage space inside by an outer box (2) and an inner box (4) provided via a heat insulating layer (3), and the front opening of the storage space Are divided into several insulated partitions (5) to form a plurality of independent spaces in the cabinet, each of which is food such as a refrigerator compartment (6), a vegetable compartment (7), a freezer compartment (8), etc. The cooling is controlled to a predetermined temperature range suitable for the storage temperature.

  Opening doors such as a refrigerator compartment door (9) and a vegetable compartment door (10) are provided at the opening of each storage compartment, and in each door, the refrigerator compartment door (9) is on one side of the front opening. It is provided so that it can freely rotate by pivotally supporting one side of a hinge attached to the top and bottom of the vegetable room (7), and the other storage room door is formed in a drawer type.

  And the magnet gasket (11) is attached to the back surface periphery of each said door so that the cross section of the refrigerator principal part may be shown in FIG. 2, and the outer box (2) which forms a refrigerator main body (1) The gap between the flange (2a) formed on the peripheral edge of the front opening and the peripheral edge on the back surface of the door (9) is hermetically sealed to thermally shut off the storage chamber (6) and the outside, and between the inner and outer boxes on the main body wall surface Together with the heat insulating material (3) filled in the tank, heat leakage is prevented and the inside of the storage chamber (6) is controlled and held at a predetermined temperature.

  On the back side of the flange part (2a) of the outer box with which the magnet gasket (11) abuts, the flange part of which is partially exposed to the inside (6) side is cooled by cooling in the storage chamber, and dew condensation occurs. As a heat source that prevents this, a high-temperature refrigerant pipe (12) that is a part of the condenser in the refrigeration cycle is provided. The dew-proof pipe (12) is also disposed on the front surface of the partition wall (5) that separates the storage chambers, and dissipates heat from the high-temperature refrigerant discharged using the outer box (2) surface as a heat sink. In addition, the outer surface of the outer box is prevented from being exposed by heat conduction.

  The structure of the magnet gasket (11) in the opening of the refrigerator compartment (6) is basically the same in any of the above-described storage chamber doors. However, as shown in FIG. (11) is a magnet holding part (13) that holds the magnet (17), a mounting part (15) to the door inner plate (14) side, and a thin-walled bag-like part (16) that connects these in a stretchable manner A door (9) having a cross-sectional shape made of, extruded into a long string with a soft synthetic resin, cut at an inclination angle of 45 degrees, and its end faces are butted and heat-welded. It is formed in a frame shape along the periphery of the back surface.

  The magnet holding part (13) is not a bag shape (63) into which a string-like magnet is inserted as in the prior art, but has a U-shaped cross-section with the main body side, which is the attracting part, open in the longitudinal direction. A wedge-shaped protrusion (13b) is formed integrally on the main body side from the U-shaped bottom surface (13a) toward the magnet (17) over the entire circumference in the longitudinal direction.

  The magnet (17) is composed of a long string-like soft body having a rectangular cross section formed by mixing soft rubber and magnetic powder, and is housed in the magnet holding portion (13) and is a flat surface (17a) on the outer upper surface thereof. Is arranged so as to be flush with the edge of the open portion on the main body side, and an insertion groove (17b) having a narrow opening is formed on the lower surface side, and the magnet is formed in the insertion groove (17b). The wedge-shaped protrusion (13b) of the holding part is fixed by using its elasticity so as not to come out of the magnet holding part (13).

  At this time, the magnet (17) and the magnet holding part (13) are fixed not only by the fitting of the insertion groove (17b) and the wedge-shaped protrusion (13b) but also the magnet (17) and the holding part ( 13) The inner surface may be bonded together at the time of extrusion molding of the gasket body, or may be fixed with an adhesive after the extrusion molding.

  Further, the outer flat surface (17a) of the magnet (17) is provided with two grooves (17c) at intervals between the inner side and the outer side in the longitudinal direction. The magnet holding part (13) adjacent to the inner side or the outer side of the outer flat surface (17a) has a flange part (2a) of the outer box which is an opening surface of the refrigerator body from the adjacent part on the inner side or the outer side of the box. A soft fin (13c) is extended toward the top, and when the door is closed, the soft fin (13c) is in direct contact with the flange (2a) of the opening surface of the main body together with the outer flat surface (17a) of the magnet. .

  The bag-like portion (16) is formed by connecting the magnet holding portion (13) and the attachment portion (15) from both sides with a thin material having a thickness of 0.3 to 0.4 mm to form a bag shape. The gasket-like part (16) allows the gasket (11) to expand and contract in the vertical direction in FIG. 2, which is the opening and closing direction of the door (9), and absorbs the adsorption force of the magnet holding part (13) when the door is opened. The door opening force is alleviated, and the magnet (17) has a jumping allowance to the outer box flange (2a) when the door is closed and has a buffering action of the door closing force.

  And the attachment part (15) of the magnet gasket (11) has a wedge-shaped anchor shape that protrudes downward from the thick base, and is an undercut formed on the four peripheral edges of the inner plate (14) of the door The outer surface of the magnet (17) of the magnet gasket (11) formed in this way is held so that the gasket (11) does not come out by being fitted into the concave groove (14a). (17a) hermetically seals the inside of the refrigerator (6) and the outside of the refrigerator by directly adsorbing by the magnetic force to the surface of the flange (2a) that forms the front opening of the outer casing (2) made of thin steel plate. The heat is shut off.

  That is, according to the said structure, the wedge-shaped protrusion (15) (13b) integrally formed over the door (9) side and the outer case (2) side of the magnet gasket (11) over the longitudinal direction, respectively, The magnet gasket (11) holding the magnet (17) can be easily opened by fitting it into the mounting groove (14a) of the facing door inner plate (14) and the insertion groove (17b) of the soft magnet (17) ( 9) It can be attached around the back surface, and when closing the door, the magnet (17) held by the magnet holding part (13) interposes the thin part of the holding part which is a non-magnetic material. However, it directly contacts the flange portion (2a) of the outer box (2), so that the heat leakage inside and outside the chamber can be blocked by a sufficient adsorbing force and a reliable closed state can be maintained.

  As described above, the gasket mounting portion is not limited to the fitting configuration in the door inner plate, but may be an adhesive or screw fixing method. Furthermore, the door-side component and the soft resin gasket are integrally molded. But you can.

  Further, since the outer flat surface (17a) of the magnet (17) has two concave grooves (17c) on the inner side and the outer side, the space by the concave groove (17c) is the outer box collar ( 2a) is a heat shielding layer inside and outside the box, and heat outside the box is conducted from the flange (2a) of the outer box to the magnet (17) of the magnetic powder material having relatively high thermal conductivity, and the inside (6) Intrusion to the side can be suppressed.

  Similarly, since the magnet (17) is in direct contact with the flange (2a) of the outer box, the heat of the dew prevention pipe (12) is conducted to the magnet (17), and the refrigerator Even if there is a part where the dew proof pipe (12) is not disposed around the outer box (2) due to the structure, it is possible to suppress dew condensation on the surface of the magnet gasket (11) and the like.

  Furthermore, the outer flat surface of the magnet is provided by a soft fin (13c) extending from the inner side or the outer side adjacent to the magnet holder (13) toward the opening surface (2a) of the refrigerator body (2). Since the soft fin (13c) directly contacts the main body opening surface (2a) together with the surface (17a), the magnet (17) itself is blocked from the air inside or outside the chamber when the door is closed. Heat leakage by the magnet (17) with good heat conduction can be suppressed, and the heat insulation performance inside and outside the cabinet can be enhanced.

  With this gasket configuration, when the mounting portion (15) is fitted and fixed in the mounting groove (14a) of the inner plate of the door, the outer upper surface of the magnet (17) held by the magnet holding portion (13) is fixed. The flat portion (17a) is directly adsorbed to the flange portion (2a) of the outer box, and the concave groove (17c) on the magnet surface and the soft fin (13c) of the magnet holding portion (13) adjacent to the magnet (17) A heat shield between the inside and outside of the magnet in the magnet portion is ensured, and the extending part of the bag-like part (16) inside the box covers the flange part (2a) of the outer box and abuts on the flange part (4a) of the inner box In addition to sufficient closing door adsorbing power, heat leakage between the inside of the refrigerator (6) and the outside of the refrigerator can be reliably cut off to improve cooling efficiency and reduce power consumption.

  In addition, in the said Example, the magnet gasket structure of the door (9) back surface which opposes the engagement collar part (2a) (4a) of the outer case (2) and inner case (4) in the front opening part of a refrigerator main body However, the present invention is not limited to this, and can also be applied to a magnet gasket configuration in the partition wall (5) that separates the storage chambers.

  INDUSTRIAL APPLICABILITY The present invention can be used for a refrigerator having improved heat shielding performance in the magnet gasket portion.

It is a perspective view which shows the whole refrigerator in this invention. It is an expanded sectional view of the door gasket part which shows one Embodiment of this invention. It is sectional drawing which shows the single-piece | unit structure of the gasket in FIG. It is sectional drawing of the same part as FIG. 2 which shows the conventional door gasket part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 2a Outer box collar part 3 Heat insulation layer 4 Inner box 4a Inner box collar part 5 Partition wall 6 Storage room 9 Refrigeration room door
11 Magnet gasket 12 Anti-dew condensation pipe 13 Magnet holder
13a Bottom 13b Wedge-shaped ridge 13c Soft fin
14 Door inner plate 14a Mounting groove 15 Mounting part
16 Bag-shaped part 17 Magnet 17a Flat part
17b Insertion groove 17c Concave groove

Claims (5)

  A magnet holding portion that is formed of a soft resin and holds a long string magnet that is attracted to the periphery of the opening of the refrigerator main body, an attachment portion to the door side, and the magnet holding portion and the attachment portion are connected to be stretchable. A magnet gasket having a thin bag-like portion and having the outer flat surface of the magnet held by the magnet holding portion directly adsorbed to the opening surface of the refrigerator body is attached to the rear surface of the door that closes the opening of the main body. A refrigerator characterized by.   An insertion groove is provided in the longitudinal direction on the bottom surface of the magnet holding portion, and a wedge-shaped protrusion formed on the magnet holding portion facing the insertion groove is inserted into the insertion groove to hold the magnet. The refrigerator according to claim 1.   3. A wedge-shaped ridge that fits in a fitting groove provided on the back surface of the bag-like portion facing the wedge-shaped ridge of the magnet holding portion is formed over the longitudinal direction. The refrigerator described.   The refrigerator according to any one of claims 1 to 3, wherein the outer flat surface of the magnet is provided with at least one groove in the longitudinal direction. A soft fin extends from at least one of the inner side or the outer side of the magnet toward the opening of the main body on the magnet holding portion adjacent to the inner side or the outer side of the outer flat surface of the magnet. The refrigerator according to any one of claims 1 to 4, wherein the soft fin is in direct contact with the opening surface of the main body together with the surface.

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