JP2911334B2 - Door devices such as refrigerators - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket which is attached to a peripheral portion on the back side of a door device of a refrigerator or the like and which abuts against the edge of the opening of a heat insulating box to seal the door and the edge of the opening. The present invention relates to a door device in which a door inner plate for attaching a gasket is improved.

[0002]

2. Description of the Related Art For example, a groove having an enlarged depth is formed in a door inner plate constituting a part of a door device such as a refrigerator, and a gasket mounting portion is inserted into the groove.
(I) Japanese Patent Publication No. 58-55424 and (II)
There is 41176 publication. What is shown in the publication of the above (I), after inserting the mounting base of the gasket into the groove of the inner plate,
A foam insulating material is filled between the inner plate and the outer plate, and the groove of the inner plate is compressed by the foaming pressure of the insulating material to fix the mounting base in the groove. Further, in the above-mentioned publication (II), the gasket insertion portion is provided on the entire inner wall of the bottomed mounting hole in order to easily insert the gasket insertion portion into the groove (bottomed mounting hole) of the door. A bag-like portion that is in close contact with the bottom, and an anchor portion that rises from the bottom in the bag-like portion.The top of the anchor is larger than the opening width of the bottomed mounting port, and this top is connected to the bottomed mounting port. It is deformed at the time of insertion and is locked to the mounting port via the bag-shaped portion.

Further, (III) Japanese Utility Model Laid-Open No. 5-3877 discloses a door frame provided inside a door device and an arrow-shaped portion inserted into a groove formed in the door frame to be fixed to the door frame. A fin of the gasket is formed such that the fins of the gasket have substantially uniform thickness when the insertion pressing portion of the gasket is pressed to insert the arrow-shaped portion into the groove.

[0004]

In the apparatus disclosed in the above-mentioned publication (I), the gasket mounting base is attached to the groove of the inner plate before filling with the heat insulating material, and the foaming pressure of the heat insulating material is used. In order to compress the mounting base of the gasket with the groove, the width of the opening of the groove changes due to the foaming pressure of the heat insulating material, the width does not become constant, and the insertion part comes out of the groove and the gasket is easily detached. In addition, the insertion part becomes difficult to insert into the groove when replacing the gasket, and the gasket deforms due to the heat generated during foaming of the heat insulating material and the heat of the foaming jig. There was a problem that it stopped contacting. On the other hand, in the one disclosed in the publication of the above (II), it is difficult to form a trapezoidal groove in the inner plate of the door by a vacuum forming method, and the trapezoidal groove is provided. The work of assembling the inner plate to the outer plate becomes difficult, and there is a problem in the forming and assembling work. On the other hand, in the gasket disclosed in the above-mentioned publication (III), since a groove having a wide inner portion is formed in the door frame, a door frame is required, and the door frame is required to reduce the number of parts. In the case of abolition, the same problem as the above (II) occurs.

[0005] In the present invention, the inner plate can be vacuum-formed while the insertion portion of the gasket is to be inserted into a groove formed in the inner plate of the door and having a wider inner portion. It is an object of the present invention to provide a door device and a gasket in which an insertion portion can be easily inserted into a groove having an enlarged width.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a metal door outer plate comprising a front wall, left and right side walls, and inwardly-facing flanges formed by bending the distal ends of both side walls inward. A resin upper and lower door cap having a flange piece at a gap and a peripheral edge where the upper and lower opening ends are inserted, an outward flange portion placed on the inward flange portion and the flange piece, and located inside the outward flange portion. A door device such as a refrigerator including a resin door inner plate having a gasket mounting groove, and a foam insulation material filled in a space formed by combining the door inner plate, the door outer plate, and the upper and lower door caps. In the above, the door inner plate is formed as a mountain-shaped portion having a width substantially equal to a width of a front portion and a bottom portion of the groove and a portion outside the front portion forming a mountain at the time of molding. Door shell and door cap At the time of combination with the door device, a door device for a refrigerator or the like in which the angled portion is pressed toward the space by the foaming jig so that the width of the groove is smaller than the width of the bottom to form a gasket mounting groove. Is provided.

[0007] The present invention also provides a door for a refrigerator or the like in which a gasket is attached to a groove formed in an annular shape at the peripheral edge of the back surface and the frontage is narrower than the bottom, and the gasket seals the edge of the opening when the opening of the heat insulating box is closed. In the apparatus, the gasket has an insertion portion inserted into the groove, a storage portion that abuts on an edge of the opening and stores a magnet therein, and connects the storage portion and the insertion portion to form a hollow interior. A plurality of hollow portions, a pressing portion extending from the insertion portion toward the storage portion and located in the hollow portion, wherein the insertion portion has a base having substantially the same width as the frontage of the groove, A continuous body is formed by a curved body having a curved front end side and a claw body continuous with the base body and the curved body and having a width larger than that of the base body. The pressing portion includes an inclined body inclined from one end to the other end. Provide door devices such as refrigerators provided It is intended.

[0008]

According to the first aspect, the groove of the door inner plate has a width substantially equal to the width of the front portion and the bottom portion at the time of molding, and the width of the front portion is changed to the width of the bottom portion by a jig at the time of combination (foam assembly). Since it is made smaller, workability at the time of forming the door inner plate and the groove is improved, and forming by vacuum forming becomes easy.

According to the second aspect, the curved body is provided at the distal end side of the insertion portion of the gasket, and the inclined body which is inclined from one end to the other end is provided at the pressing portion. When the storage portion is pressed against the pressing portion when the storage portion is pressed in the direction of the insertion portion, the pressing portion is deformed so that the inclined body of the pressing portion becomes horizontal, and the distal end side (curved body) of the insertion portion is inclined. Therefore, the width of the claw body having a width larger than the width of the opening of the groove is made smaller than that in the normal state, so that the work of inserting the insertion portion into the groove can be easily performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional side view of a refrigerator, FIG. 2 is a longitudinal sectional side view of a door inner plate of the present invention, FIG. 3 is an enlarged sectional view of a groove of the door inner plate and a peripheral portion thereof, and FIG. FIG. 5 is a cross-sectional view of a main part in an intermediate state for explaining a procedure of assembling the door device to the jig, and FIG. 5 is a cross-sectional view of a main part in an assembled state for explaining the procedure of assembling the door device to the foaming jig. FIG. 6 is a cross-sectional view of a main part in a completed state of the door device, FIG. 7 is an enlarged cross-sectional view of a normal state of the gasket, and FIG. 8 is a cross-sectional view of a pressed state of the storage unit when the gasket is attached. .

In FIG. 1, reference numeral 1 denotes a household refrigerator, which is a heat-insulating box 2 having a front opening and constituting a main body thereof.
And doors 3, 4, and 5 for closing the opening of the box. The door 3 is a revolving door corresponding to a refrigerator compartment 13 described later, the doors 4 and 5 are draw-out doors, the door 4 corresponds to the freezing compartment 14, and the door 5 corresponds to the vegetable compartment 15. ing.

Reference numerals 11 and 12 denote horizontal partition walls which partition the interior of the heat insulating box 2 into three stages of upper, middle and lower. In this embodiment, the partition walls 11 are used.
The refrigerator compartment 13 is cooled to a temperature where the food does not freeze (for example, about 3 ° C.), the freezer compartment 14 is cooled above the partition wall 12 to the freezing temperature (for example, about −20 ° C.), and the refrigerator is cooled below. The vegetable room 15 is cooled to a temperature slightly higher than the room temperature and suitable for storing vegetables (for example, about 7 ° C.). In addition, a container 16 for storing frozen food is provided on the door 4,
A container 17 for storing vegetables is attached to the door 5.

A partition plate 18 is disposed at the back of the freezer compartment 14. Behind the partition plate 18, a plate fin type evaporator 19 as a cooler and a blower 20 such as a propeller fan are provided.
Is formed.

Reference numeral 22 denotes a freezing cold air duct for supplying the cool air cooled by the evaporator 19 from the outlet 22A to the freezing room 14, and 23 denotes a cool air cooled through the horizontal partition wall 11 and cooled by the evaporator 19. Is a refrigeration cool air duct for supplying refrigeration to the refrigeration compartment 13, and 24 is a distribution chill air duct that communicates with the refrigeration cold air duct 23 and distributes the cool air from the outlets 24A and 24B to the refrigeration compartment. Reference numeral 25 denotes a damper device, which is a so-called shape memory damper, which is disposed at a connection portion between the refrigeration cool air duct 23 and the distribution cool air duct 24.

A machine room 33 in which a compressor 31 and an evaporating dish 32 are arranged is formed below and behind the heat insulating box 2. Reference numeral 35 denotes a dew tray disposed below the evaporator 19, and reference numeral 36 denotes a defrosting heater such as a quartz glass tube heater or a Vycor tube heater disposed between the dew tray 35 and the evaporator 19. In addition, a platinum-based ceramic deodorizing catalyst is laminated and fired on the surface of the glass tube of the heater 36 for defrosting. This defrost heater 36 allows the compressor 3
At the time of the operation 1 (that is, at the time of the cooling operation), the odor component of the cool air including the odor component returning below the evaporator 19 is adsorbed,
Heat can be exchanged with the evaporator as clean cool air, and when the defrost heater is operated (that is, during the defrost operation), the adsorbed odor component is oxidized and decomposed with a platinum-based catalyst to form a catalyst layer. Activation and clean air can be generated.

Reference numeral 37 denotes the horizontal partition wall 12 extending from the cold air inlet 37A formed at the front of the lower surface of the horizontal partition 12 to the return port 37B formed at the rear of the partition 12 and below the evaporator. It is a cold air return passage extending inside in the front-rear direction. Reference numeral 38 denotes a water distribution pipe that guides defrost water from the dew receiving tray 35 to the evaporating tray 32.

The doors 3 to 5 are different in size but have the same components, so that the door 3 will be described below. Door 3
A metal door outer plate 44 composed of a front wall 41, left and right side walls 42, and an inward flange portion 43 in which the distal ends of both side walls are bent inward, and upper and lower open ends of the door outer plate 44 are inserted. Upper and lower door caps 47 made of resin having a gap 45 and a flange piece 46 on the peripheral edge, an outward flange portion 48 placed on the inward flange portion 43 and the flange piece 46, and a position inside the outward flange portion 48. A door inner plate 50 made of resin having a groove 49 for mounting a gasket, a foamed heat insulating material 51 filled in a space formed by combining the door inner plate 50, the door outer plate 44, and the upper and lower door caps 47; The gasket 52 is fixed to the groove 49 and seals the edge of the opening of the heat insulating box 2 when the opening is closed.

The upper and lower door caps 47 are a front wall 62 that rises from the front end of the inner surface of the base 61, a left and right wall 63 that rises from the left and right ends of the inner surface of the base 61, and an inward flange that rises from the rear edge of the inner surface of the base 61 over substantially the entire width in the left-right direction. And a horizontal rib 64. Reference numeral 65 denotes a plurality of gap ribs formed with a gap corresponding to the thickness of the front wall 62, the left and right walls 63, and the door outer plate 44, and 67 denotes a reinforcing rib formed on the inner surface of the base 61.

As shown in FIG. 3, the door inner plate 50 has a front end portion and a bottom portion 71 of the groove 49 which have substantially the same width A at the time of molding, and a portion outside the front end portion has a mountain shape. It is formed as a part 72. As shown in FIGS. 4 and 5, the door inner plate 50 is attached to the recess formed in the upper foaming jig 73 and the inward flange portion 43 of the door outer plate 44 attached to the lower foaming jig 75. And the flange piece 46 of the upper and lower door cap 47.
Then, when assembling the door inner plate 50 (specifically, when the door inner plate 50 is sandwiched between the jigs 73 and 75),
Because the door inner plate 50 is sandwiched between the two jigs, the angled portion 72 of the door inner plate 50 is pressed toward the space side, so that the stress B at this time causes the width B of the opening 77 of the groove 49 to be larger than the width of the bottom 71. Also become smaller and firmly fixed by foaming and solidification of the heat insulating material,
After the foaming, the gasket mounting groove 49 in which the frontage 77 has a predetermined width B and the back is widened is completed.

The gasket 52 is formed by extruding an elastic material such as rubber or synthetic resin, and is connected in a rectangular shape corresponding to a rectangular groove 49 in a plan view. The gasket 52 includes a base 81, an insertion portion 82 formed in the base 81 and inserted into the groove 49 of the door inner plate 50,
And a plurality of storage portions 84 in contact with the edges of the opening to store the magnets 83 therein, and a plurality of thin portions formed to connect the storage portions 84 and the insertion portions 82 and having hollow interiors for absorbing shock. The first buffer portion 85 and the second buffer portion 86 as hollow portions, the pressing portion 87 extending from the insertion portion 82 toward the storage portion 84 and located in the second buffer portion 86, and the first buffer portion 85 Three fins 8 formed to prevent outside air from entering
8, 89 and 90. In addition, the base 81 and the insertion portion 8
2 and the pressing portion 87 are formed to be thicker than other portions in order to secure the mounting strength of the gasket 52 and to make the gasket 52 firm during insertion.

The insertion portion 82 is provided at the front end 7 of the groove 49.
7, a head 92 as a curved body connected to the base 91 and having a distal end curved in a semicircle, and a frontage 77 of the groove 49 connected to the base 91 and the curved body 92. And a claw 93 having a width C substantially the same as or slightly larger than the side portion 78 of the groove 49. And the pressing portion 87
Has an inclined body 95 inclined from one end to the other end.
Is provided.

In the above configuration, the groove 49 of the door inner plate 50
The frontage 77 and the bottom 71 are formed with substantially the same width A at the time of forming processing, and the width B of the frontage 77 is reduced by the width B of the bottom 71 by being sandwiched between the jigs 73 and 75 during combination (foaming assembly). A, and is fixed firmly by foaming and solidification of the heat insulating material. After foaming, the frontage 77 has a predetermined width B.
As a result, the width of the frontage is easily stabilized, the workability at the time of molding is improved, the molding by vacuum molding is also facilitated, and the dimensional accuracy of the door inner plate 50 (specifically, the groove 49) is also improved. The gasket mounting frame of the specification can be eliminated.

Further, the curved body 92 is provided on the distal end side of the insertion portion 82 of the gasket 52, and the inclined portion 95 which is inclined from one end to the other end is provided on the pressing portion 87. When the storage portion 84 comes into contact with the inclined body 95 of the pressing portion 87 when the storage portion 84 is pressed in the direction of the insertion portion 82, the pressing portion 87 and the insertion portion 82 are deformed so that the inclined body 95 becomes horizontal. In order to act to incline the curved body 92 on the distal end side of the insertion portion 82, the claw 93 having a width C larger than the width 77 of the groove 49 is formed with a width D smaller than the normal width and the width 77 of the groove 49. And the width of the insertion portion 82 can be reduced so that the insertion of the insertion portion 82 into the groove 49 can be easily performed.

[0024]

According to the first aspect of the present invention, the groove of the door inner plate has a width substantially equal to the width of the front portion and the bottom portion during the forming process, and the front portion is formed by pressing the angled portion with the jig at the time of combination (foaming assembly). The width of the groove is smaller than the width of the bottom, and the width of the groove narrowed by foaming and solidification of the heat insulating material is firmly fixed to stabilize the width of the frontage of the groove. Workability at the time is improved, forming by vacuum forming becomes easy, a frame for mounting a gasket can be omitted, and the number of parts can be reduced.

According to the second aspect, the curved body is provided on the distal end side of the insertion portion of the gasket, and the inclined body which is inclined from one end to the other end is provided on the pressing portion. When the storage portion is pressed against the pressing portion when the storage portion is pressed in the direction of the insertion portion, the pressing portion is deformed so that the inclined body of the pressing portion becomes horizontal, and the distal end side (curved body) of the insertion portion is inclined. Therefore, the width of the claw body having a width larger than the width of the opening of the groove is made smaller than that in the normal state at the time of insertion, so that the work of inserting the insertion portion into the groove can be easily performed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a refrigerator.

FIG. 2 is a vertical sectional side view of a door inner plate of the present invention.

FIG. 3 is an enlarged sectional view of a groove of a door inner plate and a peripheral portion thereof.

FIG. 4 is an essential part cross-sectional view in an intermediate state for explaining a procedure of assembling the door device to the foaming jig.

FIG. 5 is a main part sectional view in an assembled state for explaining an assembling procedure of the door device to the foaming jig.

FIG. 6 is a sectional view of a main part in a completed state of the door device.

FIG. 7 is an enlarged sectional view of the gasket in a normal state.

FIG. 8 is a cross-sectional view of the storage unit in a pressed state when the gasket is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Heat insulation box 3 Door 43 Inward flange 44 Door outer plate 46 Flange piece 47 Upper and lower door cap 48 Outward flange 49 Groove 50 Door inner plate 52 Gasket 71 Bottom 77 Frontage 82 Insertion part 84 Storage part 85, 86 Hollow part 87 Pressing part 91 Base 92 Curved body 93 Claw body

Claims (2)

(57) [Claims] 1. A metal door outer plate comprising a front wall, left and right side walls, and an inwardly-facing flange portion having the front end portions of both side walls bent inward, and a gap into which the upper and lower open ends of the door outer plate are inserted. And a resin upper and lower door cap having a flange piece on the periphery, an outward flange part placed on the inward flange part and the flange piece, and a gasket mounting groove located inside the outward flange part. In a door device such as a refrigerator equipped with a resin door inner plate and a foam insulation material filled in a space formed by combining the door inner plate, the door outer plate, and the upper and lower door caps, the door inner plate includes: At the time of the forming process, the front and bottom portions of the groove have substantially the same width and a portion outside the front portion is formed as a chevron, and the door outer plate and the door cap are formed by a foaming jig. When combined with A door device for a refrigerator or the like, wherein the foam jig presses the chevron toward the space so that the width of the groove is smaller than the width of the bottom to form a gasket mounting groove. . 2. A door device for a refrigerator or the like, wherein a gasket is attached to a groove formed in an annular shape at a peripheral portion of a back surface and a front portion is narrower than a bottom portion, and the gasket seals an edge of the opening when the opening of the heat insulating box is closed. The gasket includes an insertion portion inserted into the groove, a storage portion that abuts against an edge of the opening and stores a magnet therein, and a plurality of hollows formed by connecting the storage portion and the insertion portion to form a hollow interior. And a pressing portion extending from the insertion portion toward the storage portion and located in the hollow portion. The insertion portion has a base having substantially the same width as the frontage of the groove, and has a distal end connected to the base. A curved body,
Consists of a pawl body of greater width than the frontage of said groove contiguous to the substrate and flexure, said the pressing portion, and characterized in that a tilting member which is inclined toward the other end from one end Door devices such as refrigerators.