WO2002004779A1 - Door device and refrigerator - Google Patents

Abstract

A door device capable of increasing the food storability of a refrigerator, reducing a door opening force, and increasing an easiness in a handling, and a refrigerator having a power consumption reduced by the door device, wherein biparting doors (46, 47) are provided on the opening part of a storage chamber (44a) on the upper side of a heat insulated box body (43), movable gaskets (73) are installed on the unsupported side side-faces of the doors (46, 47) through holding members (68, 69), and a guide part (48) provided on the top surface of the storage chamber (44a) is allowed to abut on the latch parts (64, 65) of the holding members (68, 69) so as to operate the movable gaskets (73), whereby the simple door device allowing the movable gaskets (73) to be adhered to and apart from each other can be provided.

Description

 Description Door device and refrigerator

Technical field

 The present invention relates to a door device and a refrigerator including the door device. Background art

 In recent years, refrigerators have been provided that employ a so-called double-door type door device that opens and closes an opening of a storage room with two doors as the size of the refrigerator increases.

 Conventional refrigerators with double doors keep the inside of the refrigerator airtight by gaskets provided on the back of both doors. For this purpose, a surface must be formed for the gasket located on the non-pivot side of the door to abut. For this reason, a blocking material was installed at the opening of the heat-insulating box to partition it. 'As a conventional door device, for example, there is a device disclosed in Japanese Patent Application Laid-Open No. 1-208069.

 Hereinafter, the conventional door device will be described with reference to the drawings.

 FIG. 10 is a perspective view of a conventional refrigerator.

 FIG. 11 is a front view of a conventional refrigerator.

 FIG. 12 is a plan sectional view of an opening of a conventional refrigerator.

 FIG. 13 is a perspective view of a conventional refrigerator door.

In the refrigerator 1 shown in FIGS. 10 to 13, the outer box 2 made of a steel sheet, the inner box 3 formed of a synthetic resin, and the foam insulating material (not shown) filled between the two boxes 2 and 3 are provided. A heat-insulating box 4 opened forward is formed. This insulated box The opening 5 is composed of two double doors 7 and 8 which are rotatably supported by the upper and lower hinges 6 on the left and right edges of the opening 5 of FIG.

 Guide members 9 are provided opposite to each other above and below the edge of the opening 5 of the heat insulating box 4 at the non-pivot side of each of the doors 7 and 8. The guide member 9 has a guide groove 10 formed therein. The doors 7 and 8 are composed of frame members 11 and 12, outer frames 15 and 16, door inner plates 21 and 22, and heat insulating material 23. The outer frames 15 and 16 are composed of frame members 11 and 12 and door outer plates 13 and 14 engaged with the frame members. The door inner plates 21 and 22 are formed by abutting the inner flanges 17 and 18 of the frame members 11 and 12. The heat insulating material 23 is foam-filled between the outer frames 15 and 16 and the door inner plates 21 and 22, respectively.

 A pair of left and right vertical walls 24 and 25 are formed on the door inner plates 21 and 22 respectively. A gasket 28 containing a magnet is attached to the grooves 26 and 27 at the ends of the frame members 11 and 12. The fin 29 is in close contact with the non-pivotal side vertical walls 24 and 25, respectively. When the doors 7 and 8 are closed, the gasket 28 is in close contact with the front edge of the outer box 2 at the opening 5 of the heat insulating box 4 to seal the inside 30 of the chamber.

 Further, a partition 31 having a substantially short cross section is attached to the outside of the inner vertical wall 24 from the gasket 28 located on the non-pivot side of the back surface of the door 7. The hinge plate 32 is fixed to the reinforcing plate 33 on the side of the heat insulating material 23 by screws 34 at two locations above and below the outer surface of the vertical wall 24. The partition member 31 is rotatably supported on a rotation shaft 35 of the hinge plate 32. The partition 31 extends vertically across the edge of the opening 5 and extends vertically with a dimension slightly shorter than the spacing between the guide grooves 9 and the guide grooves 9 of the upper and lower guide members 9 and guide members 9. Are there. The front surface is a flat surface, on which a steel plate 36 is attached as shown in FIG.

In addition, projections 37 are provided at the upper and lower ends as engagement portions in the vertical The projection is formed. The hinge plate 32 is inserted into the partition 31 through two cutouts 38 formed in the upper and lower portions at the rear edge of the partition 31 at the door 7 side, and the rotating shaft 35 is positioned there. . A panel member 39 made of a coil spring is inserted through the rotating shaft 35, and one end of the panel member 39 is inserted into the hinge plate 32, and the other end of the separating member 31 is separated from the rotating shaft 35. And 400 respectively. Thus, the partitioning member 31 is configured to always rotate clockwise as indicated by the arrow 4110 in FIG. 12 by the restoring force of the coil spring.

 The operation of the conventional door device configured as described above will be described below.

 When the door 7 is opened, the partitioning body 31 moves along the outer side of the vertical wall 24 of the door inner plate 21 by the restoring force of the panel member 39, as shown by the broken line in FIG. It is held in contact with screws 34. In this initial state, even if the user's hand erroneously hits the partition body 31 and is rotated counterclockwise in FIG. 12, it can be returned to the initial state by the spring member 39. This operation is performed irrespective of the rotation angle of the partition 31. Therefore, partition 3

The door 7 is closed while 1 is turned, and the protrusion 37 of the partition body can be prevented from being damaged by collision with the protrusion of the guide member 9.

 Next, when the door 7 is closed, the projection 37 of the partition member 31 enters the guide groove 10 and slides along the curved surface in the guide groove 10. With it

The reference numeral 31 rotates counterclockwise around the rotation shaft 35 against the spring member 39, and the protrusion 37 enters the depth of the guide groove 10. Conversely, when the door 7 is opened, the protrusion 37 slides along the curved surface in the guide groove 10. At that time, the partition body 31 is rotated clockwise by the restoring force of the spring member 39, and eventually returns to the initial state. However, in the above-described conventional configuration, the partition body 31 is attached to the outside of the vertical wall 24 of the door 7. Therefore, when the doors 7 and 8 are closed, the gasket 29 provides sufficient airtightness in the interior 30. When the door is opened, the partition body 31 rotates outside the vertical wall 24. Therefore, the space for the partition 31 to rotate must be provided in 7 and 8. In other words, the vertical walls 24 and 25 must be moved to the pivot side of the door. For this reason, the food storage space inside the doors 7 and .8 is reduced, and it is not easy for the user to store food materials.

 When the door 7 is opened and closed, the partition member 31 slides by rotating the projection 37 by 90 degrees along the guide groove 10 of the guide member 9. Therefore, the friction coefficient between the protrusion 37 and the guide groove 10 increases. Therefore, the door opening force of the door 7 is increased, and the user is inconvenient when opening and closing the door.

 Furthermore, even if the user thinks that the door has been closed, if the door is incompletely closed due to the frictional force and the repulsive force of the spring member 39, the temperature inside the chamber may rise and the freshness of the food may be reduced. There is.

 Further, since the partition body 31 is completely located in the interior 30 of the refrigerator, it is cooled by the cool air in the refrigerator when the door is closed. Therefore, the steel plate 36 formed in the partition body 31 is also cooled. Since steel plate 36 is in contact with the outside of the refrigerator, dew condensation may occur. Therefore, as a countermeasure, components (eg, heaters) that generate heat must be connected to the inside of the partition. Therefore, the amount of heat absorbed by the refrigerator increases, which leads to an increase in power consumption. Disclosure of the invention

The present invention has been made in view of the above problems, and has as its object to provide a door device that effectively secures a food storage space inside a door, has a small door opening force, and is easy to use. I do.

 Still another object of the present invention is to provide a refrigerator that can reduce power consumption by a door device that suppresses heat absorption in a door seal structure. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is an external front view of a first embodiment of a refrigerator according to the present invention. FIG. 2 is a perspective view of the inside of the refrigerator of the first embodiment.

 FIG. 3 is a perspective view of the back surface of the door according to the first embodiment.

 FIG. 4 is a cross-sectional view of the door of the refrigerator according to the first embodiment, taken along line 414 of FIG.

 FIG. 5 is a sectional view of the door of the refrigerator according to the first embodiment, taken along line 5-5 in FIG.

 FIG. 6 is an external front view of Embodiment 2 of the refrigerator according to the present invention. FIG. 7 is a perspective view of the inside of the refrigerator of the second embodiment.

 FIG. 8 is a perspective view of the back surface of the door according to the second embodiment.

 FIG. 9 is a sectional view taken along line 6-6 in FIG.

 FIG. 10 is a perspective view of a conventional refrigerator.

 FIG. 11 is a front view of a conventional refrigerator.

 FIG. 12 is a sectional view of a main part of a conventional refrigerator.

 FIG. 13 is a perspective view of a main part of a conventional refrigerator. BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, embodiments of a door device for a refrigerator according to the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is an external front view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the inside of the refrigerator of the embodiment. FIG. 3 is a rear perspective view of the door device of the embodiment. FIG. 4 is a cross-sectional view of the door taken along the line 414 of FIG. FIG. 5 is a sectional view of the door taken along line 5-5 in FIG.

 In the refrigerator body 40 shown in FIGS. 1 to 5, an outer box 41 made of a steel plate, an inner box 42 made of resin, and a foam insulating material (not shown) filled between the two boxes 41 and 42 are provided at the front. A heat-insulating box 43 which is open to the outside is formed. The heat insulation box 43 includes a plurality of storage rooms 44a, 44b, 44c. The uppermost storage room 44a is configured so as to be opened and closed by two double doors 46, 47 pivotally supported by left and right hinges 45 at left and right edges.

 In the heat insulating box 43, a guide portion 48 is provided above the edge of the opening 4.4 of the heat insulating box 43 in a portion located on the non-pivot side of each of the doors 46 and 47.

 The guide portion 48 has two protrusions 49 of the same shape, each having a circular tip, which are formed side by side in the left-right direction of the opening portion 44.

 The doors 46 and 47 include a door outer plate 480 and 490, a flange 50, side plates 51 and 52, a door inner plate 53 and 54, and a foam insulating material 55. Here, the flange 50 has a U-shape on the outside of the warehouse, and is attached to the side surface of the doors 46 and 47 on the non-pivot side. The side plates 51 and 52 have concave portions 51a and 52a. The door inner plates 53 and 54 are in contact with the inner peripheral flanges of the side plates 51 and 52. The foam insulation material 55 is foam-filled between the outer plates 48, 49 and the side plates 51, 52 and the inner plates 53, 54, respectively.

'The door storage portions 53a and 54a are formed on the rear side of the doors 46 and 47 by the inner plates 53 and 54 on the indoor side. The grooves 5 6 and 5 7, the fins 5 8 and 5 9, the latches 64 and 65, and the holding members 6 8 and 6 are provided in the recesses 5 la and 52 a of the door side plates 51 and 52. 9 is installed. Here, the fin portions 58, 59 have their tips in contact with the concave portions 51a, 52a.

 The latch portions 64 and 65 have inclined surfaces 60 and 61 and inclined surfaces 62 and 63 and are located at the same height as the projection 49 of the guide portion 48 when the door is closed. The holding members 68, 69 include the rotating shafts 66, 67.

 The holding members 68 and 69 extend over the opening 44 in a dimension that extends vertically. The holding members 68 and 69 are rotatably supported in the recesses 51 a and 52 a of the door side plates 51 and 52 around the rotation shafts 66 and 67. . Further, the holding members 68, 69 are fixed to the detachment preventing members 70, 71 for preventing the rotation shafts 66, 67 from detaching from the door side plates 51, 52. The detachment prevention members 70 and 71 also serve as bearings for the rotating shafts 66 and 67.

 In the grooves 56, 57 of the holding members 68, 69, a bag portion 72 is provided at the outer end of the storage. In addition, a movable gasket 73 containing magnets 73 a magnetized in different polarities is provided in the grooves 56, 57 in the same length in the longitudinal direction as the holding members 68, 69 in a shape facing each other. It is attached in the size. Further, fixed gaskets 73b are attached to the upper and lower sides of the rear surfaces of the doors 46 and 47 and to the vertical sides of the rear surfaces of the doors 46 and 47 on the pivot side. '

Panel members 74 and 75 composed of coil panels are inserted through the rotating shafts 66 and 67. The spring members 74 and 75 have one end in contact with the side plates 51 and 52 and the other end in contact with the holding members 68 and 69, respectively. When the doors 46, 4.7 are closed, the fins 58, 59 seal the interior 76 by contacting the concave bottom surfaces of the door side plates 51, 52. In addition, the movable gasket 7 2 seals the inside of the compartment 76 by contacting the flange 50. The operation of the refrigerator provided with the door device configured as described above will be described below.

 When the double doors 46 and 47 are both closed, the restoring force of the panel members 74 and 75 brings the surfaces of the movable gasket 73 into close contact with each other and seals the interior 76. Further, at this time, the bag shape 72 of the movable gasket 73 is brought into contact with the flange 50 of the door side plates 51, 52, so that the cool air in the compartment 76 is cooled by the door side plates 51, 52. Even in the state of invading between the holding members 68 and 69, the inside of the warehouse 76 can be sealed.

 Further, the movable gasket 73 is attracted to each other by joining the magnets 73 a of different poles built in the gasket 73. Therefore, it is possible to increase the reliability of the seal in the warehouse 76. The fins 58, 59 provided on the holding members 68, 69 allow cool air in the compartment 76 to enter between the door side plates 51, 52 and the holding members 68, 69. Even in this state, the interior of the warehouse 76 can be sealed.

Next, when the door 47 is opened, the holding member 69 eventually moves along the projection 49 of the guide 48 with the inclined surface 63 of the latch 65. Therefore, the holding member 69 rotates about the rotation shaft 67 as a fulcrum as shown by the arrow 200. Thereby, the movable gasket 73 is forcibly released from the close contact state with each other. Therefore, when the door is opened, the surfaces of the movable gaskets 73 do not rub against each other. Thus, the durability of the gasket is improved. In addition, the gasket surface is not rubbed, generating static electricity and dirt does not adhere to the gasket surface. Also, the generation of abrasion noise due to the rubbing of the gasket is eliminated. Furthermore, since the door opening force can be reduced, the usability of the user is improved. Due to the restoring force of the thread member 75, the inclined surface 61 moves along the projection 49 of the guide portion 48. Therefore, the holding member 69 returns to the same state as the door closed state with the rotation shaft 67 as a fulcrum. This prevents foreign matter from entering between the door side plate 52 and the holding member 69. This is the same even when the door is closed.

 Next, when the door 47 is closed, the inclined surface 61 and the inclined surface 63 move along the projection 49 of the guide portion 48. Therefore, the same operation as when the door is opened is performed, and the same effect is obtained.

 In addition, when the door is in both the closed state and the open state, the rotating shafts 66, 67 are fixed by the detachment preventing members 70, 71. Thereby, the holding members 68, 69 are stabilized by the restoring force of the panel members 74, 75 without coming off from the door side plates 51, 52, and smooth rotation can be obtained.

 As described above, the door device of the present invention can realize a reliable close-contact seal structure with a simpler configuration than the conventional seal structure. Therefore, this door device is economical and can secure the reliability and stability of operation. In addition, since the door device does not use a partition, a heating element for preventing dew condensation is not required. Thus, in this door device, the sealing effect cooperates with the reduction of the amount of heat absorbed into the storage room 44a, thereby reducing the power consumption of the refrigerator.

 If the above configuration is provided only on one side of the door, the number of components required for rotating the movable gasket 73 is reduced by half. Therefore, the assemblability of the refrigerator is improved, and the material cost is reduced.

With the above configuration and operation, the partition body conventionally provided between the doors can be eliminated. As a result, the food storage space in the storage room 44a, particularly the storage space of the door storage sections 53a and 54a on the back of the door, is increased, and the usability of the user is improved. Further, a guide portion 48 for the latch portion 65 is provided on the upper surface in the storage room 44a. Therefore, the guide portion 48 does not hinder the transfer of articles into and out of the storage room 44a, and does not affect the storage capacity of the storage room.

 In addition, by providing this door device in the uppermost storage room 44a, the storage space of the frequently used storage room that the user can see and face can be improved, and the usability can be enhanced.

 In the present embodiment, the movable gasket 73 is provided between the two double doors 46, 47.

 The same effect can be obtained by providing between two drawer-type doors. At that time, the partition between the drawer doors can be eliminated. Therefore, the vertical dimension of the storage container that enters and exits with the drawer door can be enlarged, and the product storage space increases. (Embodiment 2)

 FIG. 6 is an external front view of a refrigerator according to Embodiment 2 of the present invention. FIG. 7 is a perspective view of the inside of the refrigerator of the embodiment. FIG. 8 is a perspective view of the back surface of the door of the refrigerator in this embodiment. FIG. 9 is a cross-sectional view of the door along line 9-1 in FIG.

6 to 9, the refrigerator main body 77 includes an outer box 78 made of a steel plate, an inner box 79 formed of resin, and a heat insulating box 80 opened forward. The heat insulating box 80 includes a foam insulating material (not shown) filled between the boxes 78 and 79. The two double doors 83 and 84 are rotatably supported by upper and lower hinges 82 at the left and right edges of the upper opening 81 of the heat-insulating box 80. The doors 83 and 84 open and close the opening 81. Each of the doors 83, 84 is composed of a door outer plate 85, 86, a concave door side plate 87, 88, a door inner plate 90, 91, and foam. It has been done. Here, the door inner plates 90 and 91 are in contact with the inner peripheral flanges of the side plates 87 and 88, respectively. The foam insulation 91 is foam-filled between the outer plates 85, 86, the side plates 87, 88, and the inner plates 89, 90, respectively. The grooves 87, 88 of the door side plates 87, 88 have grooves 92, 93, and the concave ends of the door side plates 87, 88 have ends 87a, 88a. The fins 94, 95 in contact with the handle, the handles 96, 97 facing the outside of the cabinet, and the handles 100, 101 each having a rotating shaft 98, 99, , Is installed. The grooves 92, 93 extend over the opening 81 up and down. The handles 100, 101 are supported rotatably about the rotating shafts 98, 99. Movable gaskets 103 are attached to the grooves 92, 93 with the same length as the grooves 92, 93 facing each other. The movable gasket 103 incorporates a plurality of magnets 102 having different polarities. Note that the magnet 102 is magnetized such that the south pole and the south pole face each other with the movable gasket 103 facing each other.

 A fixed gasket 103a is attached to the upper and lower sides of the rear surfaces of the doors 83 and 84 and to the vertical sides of the back side of the pivotal sides of the doors 83 and 84.

 Spring members 104, 105 made of a coil panel are passed through the rotating shafts 98, 99 as repulsion members. One end of the panel members 104, 105 is in contact with the side plates 87, 88, and the other end is in contact with the handles 100, 101, respectively. When the doors 83, 84 are closed, the fins 94, 95 come into contact with the bottom surfaces of the concave portions 87a, 88a of the door side plates 87, 88. Thus, the fins 94, 95 seal between the fins 94 and 95.

The operation of the refrigerator configured as described above will be described below. When the double doors 83 and 84 are both closed, the restoring force of the panel members 104 and 105 causes the surfaces of the movable gasket 103 to be in close contact with each other and the interior of the chamber to be closed. Seal. In addition, the movable gasket 103 comes into close contact with each other due to the joining of the magnets built in the movable gasket 103. Therefore, the movable gasket 103 seals the inside 106 of the refrigerator. The fins 94, 95 provided in the doors 100, 101 provide cold air in the compartment 106 between the door side plates 87, 88 and the grooves 92, 93. Even in the intruded state, the inside of the compartment 106 is sealed.

 Next, when the door 84 is opened while the hand is put on the handle 101, the handle 101 rotates as indicated by an arrow 220 with the rotation shaft 99 as a fulcrum. As a result, the movable gaskets 103 are forcibly released from close contact with each other. Therefore, when the door is opened, the surfaces of the movable gaskets 103 do not rub against each other, and the durability of the gasket is improved. In addition, the gasket surface is not rubbed and static electricity is generated, so that no dirt is attached. In addition, there is no generation of friction noise due to rubbing of the gasket surface. Further, the door opening force can be reduced, and the usability of the user is improved.

 After the door 84 is opened, the handle 101 is released from the handle 101, and the restoring force of the None member 105 causes the handle 101 to rotate about the rotation axis 99 as a fulcrum. To return to the same state as the door closed state. Thus, no foreign matter enters between the door side plate 88 and the handle 101. This is the same when the door is closed.

Next, when the door 84 is closed, in many cases, the magnets 102 in the movable gasket 103 face the same poles first. Then, since the magnets 102 repel each other, the movable gasket 103 also repels. This prevents the surfaces of the movable gasket 103 from rubbing against each other and opens the door. The same effect can be obtained. When the door 84 is further closed, the magnets 102 in the movable gasket 103 start attracting each other because the different poles face each other. Eventually, the different electrodes come close to each other and adsorb, so that the movable gasket 103 maintains a close contact state.

 With the above configuration and operation, it is possible to release the close contact of the movable gasket 103 and open the doors 83 and 84 simply by operating the handle 101 with a small force. Therefore, the door operation of the user becomes extremely easy.

 Note that, similarly to Embodiment 1 described above, the partition provided between the conventional doors 83 and 84 can be eliminated. Therefore, the food storage space in the storage room 106 is increased, and the usability of the user can be improved. At the same time, power consumption can be reduced because a heating element for preventing condensation is not required. Industrial applicability

 ADVANTAGE OF THE INVENTION The door apparatus of this invention can perform sealing between both doors by gaskets without using a partition body. Therefore, there is an effect in terms of cost, and it is possible to increase the food storage space in the warehouse. In addition, this door device has a simple closed structure, which increases the size of the effective storage room in the refrigerator and improves its economic efficiency.

The door device of the present invention has a high degree of close contact between the doors due to the magnet inside the gasket's close contact surface, so that the inside and outside of the refrigerator can be reliably sealed. Further, since the magnets facing each other when the door is closed are made of different poles, the gaskets do not rub against each other due to the repulsion of different poles. Therefore, the sealing can be performed while maintaining the durability reliability of the gasket. In addition, this door device can open the door with a light force by the operation of the movable gasket. In addition, the door device allows the gasket to operate smoothly due to the latch portion and the guide portion. Reduced. Further, in this door device, the force applied to the opening and closing of the door can be reduced while maintaining the durability of the gasket by the guide portion.

 Further, in this door device, the gasket can be easily operated with a small force by the handle, and the force required to open and close the door can be further reduced.

 Further, in this door device, the holding member can be reliably returned to the mounting state before the operation by the repulsion member, and prepared for the next operation, and the reliability of the operation can be improved.

 Further, the detachment prevention member provided on the door prevents the rotation shaft from coming off, so that the operation reliability of the holding member can be improved.

 Furthermore, the holding member which also serves as the bearing of the rotating shaft can improve the operation reliability and stability of the holding member.

 Further, the operability can be improved by reducing the door opening force. Further, power consumption can be reduced without using a heating element for preventing dew condensation.

 Further, in the refrigerator of the present invention, the latch portion is provided on the upper portion of the holding member, and the guide portion is provided on the upper surface of the storage room.

 Further, the refrigerator of the present invention is provided with a door device in the uppermost storage room of the plurality of storage rooms. Therefore, it is easy to use because the user can see it face-to-face and can increase the storage space of the frequently used storage room. As described above, the present invention provides a door device and a refrigerator having many practical effects.

Claims

The scope of the claims 1. Two doors arranged so that one side of the outer periphery faces the opening of the box,  A gasket that is provided on the back surface of the outer peripheral portion other than the one side surface of the two doors and that is in close contact with the opening front edge of the box when the door is closed;  A pair of gaskets arranged on the one side of the two doors and in close contact with each other when the door is closed; With,  At least one of the pair of gaskets is a movable gasket. 2. Double doors that are pivotally supported on the left and right sides of the opening of the box,  A gasket provided on the upper and lower back sides of the two doors and the vertical side of the back side of the pivot side of the both doors, the gasket being in close contact with the opening front edge of the box when the door is closed;  A pair of gaskets arranged on the non-pivot side of the doors and in close contact with each other when the door is closed With  At least one of the pair of gaskets is a movable gasket. 3. The door device according to claim 1 or claim 2, wherein A magnet was provided inside the contact surface of the pair of gaskets. 4. The door device according to claim 3, wherein  The magnet has a plurality of magnets,  When the door is closed, the magnets facing each other are magnetized to different polarities 5. The door device according to any one of claims 1 to 4, wherein  At the time of opening the door, the operation of the movable gasket releases the close contact between the movable gaskets. 6. The door device according to any one of claims 1 to 5, wherein  A holding member that is provided on the door and that operates by holding the movable gasket;  A latch unit attached to the holding member,  A guide portion provided on the box for operating the holding member by contacting the latch portion And a door device comprising: 7. The door device according to claim 6, wherein A handle for operating the movable gasket, which is provided integrally with the holding member, is provided on the door. 8. Claim 6 or claim 7,  After the holding member operates, a rebound member is provided to return the holding member to its original state. 9. The door device according to any one of claims 6 to 8, wherein  A door provided with a rotation shaft provided at a fulcrum for operating the holding member, and a disengagement prevention member for preventing disengagement of the rotation shaft; 10. The door device according to claim 9, wherein  The door device, wherein the detachment prevention member is a member that also serves as a bearing for the rotation shaft. 1. An insulated box body having a front side opened to form a storage room inside, and a double-door double-sided door rotatably supported on both left and right sides of the opening of the storage room.  A gasket provided on the upper and lower back sides of the two doors and the back side vertical side on the pivot side of the both doors, the gasket being in close contact with the opening front edge of the heat insulating box when the door is closed; It is arranged on the side of the non-pivot side of both doors and is in close contact with each other when the door is closed A pair of movable gaskets,  A holding member that holds and moves the movable gasket; a latch attached to the holding member;  Guide section provided on the heat insulating box to move the holding member by contacting the latch section And  A door device is provided for releasing the close contact between the movable gaskets by moving the holding member by abutting the latch portion and the guide portion when the door is opened. refrigerator. 1 2. The refrigerator according to claim 11, wherein  The latch portion is provided on the upper portion of the holding member, and the guide portion is provided on an upper surface in the storage chamber. refrigerator. 13. The refrigerator according to claim 12, wherein  A plurality of storage rooms, and a door device in a storage room at the top of the plurality of storage rooms. refrigerator.