JP2019015474A - Vacuum heat insulation housing and refrigerator - Google Patents

Abstract

To provide a vacuum heat insulation housing which achieves excellent heat insulation performance and durability.SOLUTION: A vacuum heat insulation housing 10 is a plate-like vacuum heat insulation housing fixed to a fixed body through hinges and includes: a plate-like case in which attachment parts 70, to which the hinges are attached, are formed at parts of a peripheral edge and which has an internal space; and a vacuum heat insulation material 60 housed in the internal space. The case is formed in a manner such that portions corresponding to the attachment parts are recessed at an internal space side. The vacuum heat insulation material is formed by enclosing a core material in a housing body including a member molded by a lamination part of a resin layer made of thermoplastic resin and a gas barrier layer and has recessed parts which are recessed so as to match with the attachment parts.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vacuum heat insulating casing and a refrigerator.

  Conventionally, as an example using a vacuum heat insulating casing provided with a vacuum heat insulating material, for example, a refrigerator shown in Patent Document 1 is known. The refrigerator includes a heat insulating box body whose front surface is open and a door that closes the opening of the heat insulating box body, and the door includes an outer plate, an inner plate, and a vacuum heat insulating material sandwiched between them. This door has a hinge part for attaching to a heat insulation box so that rotation is possible up and down, and the vacuum heat insulating material is formed in the shape where the corner | angular part near a hinge part was chamfered.

JP 2013-170775 A

  By chamfering the corner portion of the vacuum heat insulating material of Patent Document 1, a space is left between the chamfered portion and the hinge portion, and the heat insulating effect of the vacuum heat insulating material is reduced. For this reason, heat insulation materials, such as foaming urethane, are arranged in this space, and the reduction of the heat insulation effect is aimed at.

  However, since a heat insulating material such as urethane foam is inferior in heat insulating performance to a vacuum heat insulating material, a great effect cannot be expected in suppressing a decrease in heat insulating effect. Further, since the hinge portion is a portion where the greatest stress acts, if a member different from the vacuum heat insulating material is disposed around the hinge portion, there is a possibility that problems such as deformation may occur due to aging.

  This invention is made | formed in view of the said subject, and aims at providing the vacuum heat insulation housing | casing excellent in heat insulation and durability.

  In order to solve the above-described conventional problems, the vacuum heat insulating casing according to the first aspect of the present invention is a flat vacuum insulating casing fixed to a fixed body via a hinge, and the hinge is attached to the vacuum insulating casing. The mounting portion is formed in a part of the periphery, and includes a flat case having an internal space, and a vacuum heat insulating material accommodated in the internal space, and the case has a portion corresponding to the mounting portion. It is formed to be recessed toward the internal space side, and the vacuum heat insulating material is configured by enclosing a core material in a container including a member formed by a laminated portion of a resin layer made of a thermoplastic resin and a gas barrier layer, And it has a recessed part recessed so that it might align with the said attaching part.

  According to this configuration, the recessed area of the vacuum heat insulating material is aligned with the mounting portion of the case, so that a large occupied area of the vacuum heat insulating material can be secured in the case, and the heat insulating performance of the vacuum heat insulating housing is excellent. In addition, since it is not necessary to fill the gap between the case mounting part and the vacuum heat insulating material with a separate member from the vacuum heat insulating material, the occurrence of defects such as deformation due to aging is reduced, and the durability of the vacuum heat insulating housing Excellent.

  The vacuum heat insulating housing according to a second aspect of the present invention is the vacuum heat insulating casing according to the first aspect, wherein the hinge is formed in the attachment portion and has a bearing portion having an insertion hole, a shaft portion inserted into the insertion hole, A fixing portion that supports the shaft portion and is fixed to the fixed body, and the mounting portion is formed with a receiving portion in which the fixing portion is disposed, and the concave portion of the vacuum heat insulating material is The first recess and the second recess are stepped, and the first recess and the second recess are recessed to match the housing portion and the bearing portion, respectively. Also good.

  According to this structure, the 1st recessed part of a vacuum heat insulating material aligns with the accommodating part of a case, and the 2nd recessed part of a vacuum heat insulating material aligns with the bearing part of a case, and these are formed in step shape. Thereby, the clearance gap between a case and a vacuum heat insulating material can be restrained small, and it is excellent in the heat insulation performance and durability of a vacuum heat insulation housing | casing.

  The vacuum heat insulating casing according to a third aspect of the present invention is the coating according to the second aspect, wherein the case extends along the main surface of the case so as to cover the fixing portion disposed in the accommodating portion. And the container of the vacuum heat insulating material includes a concave first member that houses the core material, and a second member that joins the first member and seals the opening of the first member. And a portion corresponding to the concave portion of the joint portion between the first member and the second member may extend along the covering portion.

  According to this configuration, since the fixing portion is covered with the covering portion, the fixing portion cannot be seen from the user, and the appearance can be prevented from being deteriorated by the fixing portion. Moreover, this joining dimension can be taken large by the joint part of a 1st member and a 2nd member being provided corresponding to a recessed part, and extending along a coating | coated part. For this reason, for example, when opening and closing the vacuum heat insulating housing by a hinge, even if a large force acts on the vacuum heat insulating material via the second hinge portion, the vacuum heat insulating material has a strong bonding strength. Bonding separation is prevented, and the heat insulating performance of the vacuum heat insulating material can be maintained.

  The refrigerator which concerns on the 4th aspect of this invention is equipped with the vacuum heat insulation housing | casing of the aspect in any one of 1st-3rd.

  The above object, other objects, features, and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings.

  According to the vacuum heat insulation housing and the refrigerator of the present invention, heat insulation and durability are excellent.

FIG. 1 is a cross-sectional view schematically showing a refrigerator provided with the vacuum heat insulating casing according to the first embodiment as a rotary door. FIG. 2 is a perspective view showing the revolving door of FIG. FIG. 3 is an exploded perspective view showing the revolving door shown in FIG. 4 is a perspective view showing an upper left corner of the revolving door shown in FIG. FIG. 5 is a perspective view showing a lower left corner of the rotary door shown in FIG. Fig.6 (a) is the top view which looked at the inner-box part shown in FIG. 3 from the front side. FIG.6 (b) is the top view which looked at the inner-box part shown to Fig.6 (a) from the upper side. FIG.6 (c) is the top view which looked at the inner-box part shown to Fig.6 (a) from the lower side. Fig.7 (a) is the top view which looked at the inner-box part shown to Fig.6 (a) from the rear side. FIG.7 (b) is the top view which looked at the inner-box part shown to Fig.6 (a) from the left side. FIGS. 8A and 8B are partial cross-sectional views of the inner box portion shown in FIG. FIG. 9 is an exploded perspective view showing the vacuum heat insulating material shown in FIG. Fig.10 (a) is the top view which looked at the vacuum heat insulating material shown in FIG. 3 from the front side. FIG.10 (b) is the top view which looked at the vacuum heat insulating material shown to Fig.10 (a) from the rear side. 11 (a) and 11 (b) are partial cuts of the vacuum heat insulating material shown in FIG. 10 (b). Fig.12 (a) is sectional drawing of the vacuum heat insulation housing | casing cut | disconnected along the AA line of FIG. FIG.12 (b) is sectional drawing of the vacuum heat insulation housing | casing cut | disconnected along the BB line of FIG.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout the drawings, and redundant description thereof may be omitted. For convenience of explanation, in each drawing, the directions of “up”, “down”, “left”, “right”, “front”, and “rear” are defined, but the installation direction of the heat insulating housing is not limited to this, Is optional.

(Embodiment)
Hereinafter, an example of the vacuum heat insulating casing 10 according to the present embodiment will be described with reference to FIGS. As shown in FIGS. 1 and 2, the revolving door 11 includes a flat vacuum heat insulating housing 10 that is fixed to a fixed body such as a main body of the refrigerator 13 via hinges 20 and 30. The vacuum heat insulating housing 10 has a flat plate-like case in which mounting portions 70 and 80 to which the hinges 20 and 30 are attached are formed at a part of the periphery, and has an internal space. With the hinges 20 and 30 attached to the attachment portions 70 and 80, the rotary door 11 is rotatably attached to the main body of the refrigerator 13. Hereinafter, although the case where the vacuum heat insulation housing | casing 10 is applied to the rotary door 11 of the refrigerator 13 is demonstrated, the vacuum heat insulation housing | casing 10 is not limited to this.

  As shown in FIG. 3, the revolving door 11 further includes a gasket 12 attached to the vacuum heat insulating housing 10, and the vacuum heat insulating housing 10 includes a case constituted by an inner box portion 40 and an outer box portion 50, and It has the vacuum heat insulating material 60 accommodated in the internal space of a case.

  The inner box part 40 is formed by injection molding or the like using a resin, has a box shape that opens to the front, and has an opening part (first opening part), a wall part 41, and a frame part 42. . The outer box 50 is formed of a glass plate or a pre-coated steel plate, has a rectangular flat plate shape, and is attached to the inner box 40 so as to close the first opening of the inner box 40. The gasket 12 is attached to the inner box portion 40 by being fitted into a groove (not shown) on the outer surface of the wall portion 41 of the inner box portion 40 that appears outside.

  The vacuum heat insulating material 60 has a shape along the inner surface of the case, has a substantially flat plate shape, and is accommodated in the case. The case is formed such that portions corresponding to the mounting portions 70 and 80 are recessed toward the inner space, and recessed portions 66a, 66b, 68a and 68b (FIG. 10B) that are recessed so as to be aligned with the mounting portions 70 and 80. )) Is provided on the vacuum heat insulating material 60.

  The hinge has an upper hinge 20 and a lower hinge 30. The upper hinge 20 is attached to an attachment portion (upper attachment portion 70) provided at the upper left corner of the inner box portion 40, and the lower hinge 30 is provided at the lower left corner of the inner case portion 40. It is attached to the attachment part (lower attachment part 80).

  As shown in FIG. 4, the upper hinge 20 has a fixed part (upper fixed part 21), a shaft part (upper shaft part 22), and a bearing part (upper bearing part 23). The upper bearing portion 23 is formed in the upper mounting portion 70 and has an insertion hole (upper insertion hole 24). The upper shaft portion 22 is inserted through the upper insertion hole 24. The upper fixing part 21 supports the upper shaft part 22 and is fixed to the upper part of the main body of the refrigerator 13.

  As shown in FIG. 5, the lower hinge 30 has a fixed portion (lower fixed portion 31), a shaft portion (lower shaft portion 32), and a bearing portion (lower bearing portion 33). The lower bearing portion 33 is formed in the lower mounting portion 80 and has an insertion hole (lower insertion hole 34). The lower shaft portion 32 is inserted through the lower insertion hole 34. The lower fixing portion 31 supports the lower shaft portion 32 and is fixed to the lower portion of the main body of the refrigerator 13.

  As shown in FIGS. 6A to 8B, the inner box portion 40 has, for example, a rectangular shape in which the wall portion 41 is longer in the vertical direction than in the horizontal direction. The frame portion 42 has a proximal end connected to the outer edge of the wall portion 41, rises forward from the outer edge, and a distal end surrounds the first opening. An annular groove 43 into which the end of the vacuum heat insulating material 60 (FIG. 3) and the end of the outer box 50 (FIG. 3) fit is provided on the inner surface on the front end side of the frame portion 42. It is recessed from the tip side and the inner surface side. For this reason, the thickness (dimension between the inner surface and the outer surface) of the frame portion 42 may be set to be equal to or greater than the thickness of the wall portion 41 (dimension between the inner surface and the outer surface).

  The upper mounting portion 70 is formed with a housing portion (upper housing portion 71) and an upper bearing portion 23. The lower attachment portion 80 is formed with an accommodation portion (lower accommodation portion 81) and a lower bearing portion 33. The upper mounting part 70 and the lower mounting part 80 are arranged so that the central axes of the upper insertion hole 24 of the upper bearing part 23 and the lower insertion hole 34 of the lower bearing part 33 coincide with each other and extend in the vertical direction. Yes.

  The upper accommodating portion 71 is a portion that can accommodate the upper fixing portion 21 of the upper hinge 20 (FIG. 3), and is a depression that is recessed from the three sides of the upper side, the left side, and the rear side. The upper accommodating portion 71 is surrounded by a right side surface, a front side surface, and a lower side surface (upper bottom surface 74), and is open to the upper side, the left side, and the rear side. Of the inner box part 40, the part extending upward from the upper bottom surface 74 along the outer box part 50 (main surface of the case) (FIG. 2) is the upper fixed part accommodated in the upper accommodation part 71 from the rear side. It functions as a covering portion (upper covering portion 75) that covers the edge of the portion 21 (FIG. 3) from the front. The rear surface of the upper covering portion 75 is a front side surface that surrounds the upper housing portion 71.

  The upper bearing portion 23 is a portion that supports the upper shaft portion 22 of the upper hinge 20 (FIG. 3), and is provided, for example, below the upper accommodation portion 71. The upper bearing portion 23 has, for example, a substantially cylindrical shape, and an upper insertion hole 24 through which the upper shaft portion 22 is inserted is formed. The upper insertion hole 24 is recessed downward from the upper bottom surface 74 of the upper accommodation portion 71 and opens to the upper bottom surface 74. The upper housing portion 71 extending in the left-right direction and the upper insertion hole 24 extending in the vertical direction are arranged in an L shape.

  The lower accommodating portion 81 is a portion that can accommodate the lower fixing portion 31 of the lower hinge 30 (FIG. 3), and is a depression that is recessed from three sides on the lower side, the left side, and the rear side. The lower housing portion 81 is surrounded by the right side surface, the front side surface, and the upper side surface (lower side bottom surface 84), and is open to the lower side, the left side, and the rear side. A portion of the inner box portion 40 that extends downward from the lower bottom surface 84 along the outer box portion 50 (main surface of the case) (FIG. 2) is accommodated in the lower accommodation portion 81 from the rear side. It functions as a covering portion (lower covering portion 85) that covers the edge of the lower fixing portion 31 (FIG. 3) from the front. The rear surface of the lower covering portion 85 is a front side surface that surrounds the lower housing portion 81.

  The lower bearing portion 33 is a portion that supports the lower shaft portion 32 of the lower hinge 30 (FIG. 3), and is provided, for example, above the lower housing portion 81. The lower bearing portion 33 has, for example, a substantially cylindrical shape, and a lower insertion hole 34 through which the lower shaft portion 32 is inserted is formed. The lower insertion hole 34 is recessed upward from the lower bottom surface 84 of the lower accommodation portion 81 and opens to the lower bottom surface 84. The lower accommodation portion 81 extending in the left-right direction and the lower insertion hole 34 extending in the up-down direction are arranged in an L shape.

  As shown in FIG. 9, the vacuum heat insulating material 60 has a core material 61, an adsorbent 62, and a container. The container includes, for example, a first member 63 and a second member 64. The core member 61 and the adsorbent 62 are disposed in the internal space, and the internal space is configured to have a predetermined degree of vacuum. ing.

  The first member 63 is a member molded by vacuum molding, injection molding, pressure molding, press molding or the like in accordance with the inner surface shape of the inner box portion 40 (FIG. 3). The first member 63 is formed by a laminated portion of a resin layer made of a thermoplastic resin and a gas barrier layer. The first member 63 is formed of a multilayer sheet in which a plurality of layers of a soft material such as an ethylene-vinyl alcohol copolymer resin are laminated, which are softer than the material of the inner box portion 40. Thereby, when the first member 63 is accommodated in the inner box portion 40, the first member 63 can be attached to the inner surface of the inner box portion 40.

  The first member 63 is formed in a concave shape, and houses the core material 61 inside. The first member 63 has an opening (second opening) and a flange 65 at the edge of the second opening. The flange 65 projects outward along the opening surface of the second opening.

  The first member 63 has a wide portion (upper wide portion 67) at the upper left corner, and a wide portion (lower wide portion 69) at the lower left corner. The upper wide portion 67 and the lower wide portion 69 have an L-shaped flat plate shape and are formed by extending from the flange 65.

  The second member 64 is a rectangular film and is configured to constitute the front surface of the vacuum heat insulating material 60 and seal the second opening of the first member 63. For example, the second member 64 may be a laminate film such as a thermoplastic resin, and the laminate film may have a metal layer such as aluminum or stainless steel.

  The core material 61 may be made of, for example, open-cell urethane foam, and the open-cell urethane foam may have the characteristics disclosed in Japanese Patent No. 5310928. For example, the core material 61 may be made of glass fiber, rock wool, alumina fiber, polyethylene terephthalate fiber, or the like.

  The core material 61 is formed in the same shape as the internal space of the container, and is filled in the container. The core member 61 is provided with a notch (upper notch 61a) at the upper left corner and a notch (lower notch 61b) at the lower left corner. The upper notch 61 a is cut out in such a shape that the upper wide portion 67 of the first member 63 fits inside thereof, and is aligned corresponding to the upper wide portion 67. The lower notch 61 b is cut out in such a shape that the lower wide portion 69 of the first member 63 fits inside thereof, and is aligned corresponding to the lower wide portion 69.

  Examples of the adsorbent 62 include a moisture adsorbent that adsorbs and removes moisture and a gas adsorbent that adsorbs a gas such as atmospheric gas. The adsorbent 62 is fitted into a hole provided in the core 61, and the core 61 has the same shape as the internal space of the first member 63 with the adsorbent 62 fitted in the hole.

  The upper wide portion 67 of the first member 63 is fitted into the upper cutout portion 61a of the core member 61, and the lower wide portion 69 of the first member 63 is fitted into the lower cutout portion 61b of the core member 61. Thus, the core member 61 is accommodated in the first member 63 from the second opening. The second opening 64 is covered with the second member 64 so as to cover the flange 65, the upper wide portion 67 and the lower wide portion 69 provided extending from the flange 65, and the second The member 64 is joined by heat welding or the like. As a result, as shown in FIGS. 10A and 10B, the joint between the flange 65 and the second member 64 (edge joint 65 a), and the joint between the upper wide portion 67 and the second member 64. (Upper joint portion 67a) and a joint portion (lower joint portion 69a) between the lower wide portion 69 and the second member 64 are formed.

  The edge joint portion 65 a is formed in an annular shape so as to surround the second opening of the first member 63. Thereby, the container constituted by the first member 63 and the second member 64 is sealed. The edge joint portion 65 a fits into the annular groove 43 of the inner box portion 40 when the vacuum heat insulating material 60 is accommodated in the inner box portion 40 (FIG. 6A). The upper joint portion 67a and the lower joint portion 69a are L-shaped and are formed by extending the edge joint portion 65a.

  As shown in FIG. 10B, FIG. 11A, and FIG. 12A, the upper left corner of the vacuum heat insulating material 60 has a first recess (upper first) in addition to the upper joint 67a. A recess 66a) and a second recess (upper second recess 66b) are further provided.

  The upper first recess 66a and the upper second recess 66b are along the upper notch 61a of the core member 61 on the inner space side of the container. On the side opposite to the internal space side, the upper joint portion 67a is arranged in an L shape so as to correspond to the upper first concave portion 66a and the upper second concave portion 66b. The upper joint portion 67a is formed to rise upward from the edges of the upper first concave portion 66a and the upper second concave portion 66b and extend from the edge joint portion 65a. Further, when the vacuum heat insulating material 60 is accommodated in the inner box part 40 (FIG. 12A), the upper joint part 67 a has an upper cover part 75 of the inner box part 40 and an outer box part 50 ( 3) and extend along these lines.

  In this way, the upper first concave portion 66a and the upper second concave portion 66b can secure a wide joint portion (upper joint portion 67a) between the second member 64 and the upper wide portion 67, and the first member 63 and the second member 64 The joint strength can be improved. In particular, in the vicinity of the upper mounting portion 70 (FIG. 12A), a large force that peels the first member 63 and the second member 64 from the edge joint portion 65a and the upper joint portion 67a of the vacuum heat insulating material 60 when the rotary door 11 is opened and closed. Act. However, even in such a situation, peeling of the first member 63 and the second member 64 can be prevented by the strong bonding strength of the upper bonding portion 67a, and a decrease in the heat insulating performance of the vacuum heat insulating material 60 due to the peeling can be reduced.

  Further, the upper first recess 66a has a recessed shape so as to be aligned with the upper housing portion 71 of the inner box portion 40 (FIG. 12A), and the upper second recess 66b is the upper bearing portion of the inner box portion 40. 23 has a recessed shape so as to match with 23. For this reason, when the vacuum heat insulating material 60 is accommodated in the inner box portion 40, the upper first recess 66 a extends along the upper storage portion 71, and the upper second recess 66 b extends along the upper bearing portion 23.

  The upper first concave portion 66a and the upper second concave portion 66b are recessed from three sides of the upper side, the left side, and the rear side, and are continuously arranged in an L shape. The upper first concave portion 66a and the upper second concave portion 66b are formed in a step shape with different dimensions from the left end of the outer edge of the vacuum heat insulating material 60 and from the upper end. For this reason, in a state where the vacuum heat insulating material 60 is accommodated in the inner box part 40 (FIG. 6B), the gap between the upper first recessed part 66a and the upper accommodating part 71, and the upper second recessed part 66b and the upper bearing. Since the gap with the portion 23 can be kept small and the size of the vacuum heat insulating material 60 can be increased, the heat insulating performance of the vacuum heat insulating casing 10 by the vacuum heat insulating material 60 can be improved. In addition, since a separate member from the vacuum heat insulating material 60 is not disposed between the upper first concave portion 66a and the upper accommodating portion 71 and between the upper second concave portion 66b and the upper bearing portion 23, it is deformed due to use over time. Can be prevented.

  As shown in FIGS. 10 (b) and 11 (b), the lower left corner of the vacuum heat insulating material 60 has a first recess (lower first recess 68a) in addition to the lower joint 69a. A second recess (lower second recess 68b) is further provided.

  The lower first recess 68a and the lower second recess 68b are along the lower notch 61b of the core 61 on the inner space side of the container. On the side opposite to the inner space side, the lower joint portion 69a is arranged in an L shape so as to correspond to the lower first recess 68a and the lower second recess 68b. The lower joint portion 69a is formed to rise downward from the edges of the lower first recess portion 68a and the lower second recess portion 68b and extend from the edge joint portion 65a. Moreover, when the vacuum heat insulating material 60 is accommodated in the inner box part 40 (FIG. 6 (a)), the lower joint part 69a has a lower covering part 85 and an outer box part that faces the lower cover part 85. 50 (FIG. 3) and extend along these.

  As described above, the lower first concave portion 68a and the lower second concave portion 68b can secure a wide joint portion (lower joint portion 69a) between the second member 64 and the lower wide portion 69, and the first member 63 and the first The bonding strength with the two members 64 can be lowered. In particular, a large force that peels off the first member 63 and the second member 64 at the edge joint portion 65a and the lower joint portion 69a of the vacuum heat insulating material 60 when the rotary door 11 is opened and closed near the lower mounting portion 80 (FIG. 3). Works. However, even in such a situation, this peeling can be prevented by the strong bonding strength of the lower bonding portion 69a, and a decrease in the heat insulating performance of the vacuum heat insulating material 60 due to the peeling can be reduced.

  Further, the lower first recess 68a has a recessed shape so as to align with the lower housing portion 81 of the inner box portion 40 (FIG. 6A), and the lower second recess portion 68b is below the inner box portion 40. It has a recessed shape so as to align with the side bearing portion 33. For this reason, when the vacuum heat insulating material 60 is accommodated in the inner box portion 40, the lower first recess 68 a extends along the lower storage portion 81, and the lower second recess 68 b extends along the lower bearing portion 33.

  The lower first concave portion 68a and the lower second concave portion 68b are recessed from three sides of the lower side, the left side, and the rear side, and are continuously arranged in an L shape. The lower first concave portion 68a and the lower second concave portion 68b are formed in a step shape with different dimensions from the left end of the outer edge of the vacuum heat insulating material 60 and from the lower end. For this reason, in a state where the vacuum heat insulating material 60 is accommodated in the inner box portion 40 (FIG. 6C), the gap between the lower first recessed portion 68a and the lower accommodating portion 81, and the lower second recessed portion 68b. Since the size of the vacuum heat insulating material 60 can be increased by keeping the gap between the lower heat insulating portion 33 and the lower bearing portion 33 small, the heat insulating performance of the vacuum heat insulating housing 10 by the vacuum heat insulating material 60 can be improved. Moreover, since a separate member from the vacuum heat insulating material 60 is not disposed between the lower first recessed portion 68a and the lower housing portion 81 and between the lower second recessed portion 68b and the lower bearing portion 33, the aging The use can prevent problems such as deformation.

  As shown in FIG. 4, the upper hinge 20 is attached to the upper attachment portion 70 of the vacuum heat insulating housing 10 configured as described above. The upper fixing portion 21 of the upper hinge 20 has a flat plate shape, is disposed in the horizontal direction, and is attached to the main body of the refrigerator 13. With the revolving door 11 blocking the front opening of the main body of the refrigerator 13, the upper fixing portion 21 is accommodated in the upper accommodating portion 71 of the upper mounting portion 70, and the lower surface of the upper fixing portion 21 is the upper bottom surface of the upper accommodating portion 71. 74.

  With the revolving door 11 closing the front opening of the main body of the refrigerator 13, the front edge of the upper fixing portion 21 is covered from the front by the upper covering portion 75 in front of the upper housing portion 71. Thereby, since the upper side fixing | fixed part 21 cannot be seen from a user, the fall of the beauty | look by the upper side fixing | fixed part 21 can be reduced.

  The upper shaft portion 22 of the upper hinge 20 extends downward, is inserted into the upper insertion hole 24, and is supported by the upper bearing portion 23. Thereby, the rotary door 11 rotates around the upper shaft portion 22, and the rotary door 11 can open and close the front opening of the main body of the refrigerator 13.

  Further, as shown in FIG. 5, the lower hinge 30 is attached to the lower attachment portion 80 of the vacuum heat insulating housing 10. At this time, a cam 35, a stopper 36, and a leaf spring 37 are provided between them. The stopper 36 is attached to the vacuum heat insulating housing 10 and rotates together with the vacuum heat insulating housing 10 to be locked to the lower fixing portion 31 at the maximum rotation position, thereby limiting the maximum opening position of the vacuum heat insulating housing 10. To do. The cam 35 is cylindrical, and the lower shaft portion 32 is inserted therein. The leaf spring 37 applies a force in the closing direction to the rotary door 11.

  The lower fixing portion 31 of the lower hinge 30 is attached to the main body of the refrigerator 13. In a state where the revolving door 11 closes the front opening of the main body of the refrigerator 13, the lower fixing portion 31 is accommodated in the lower accommodating portion 81 of the lower attaching portion 80 and is lowered via the stopper 36 and the leaf spring 37. The lower surface of the side fixing portion 31 is disposed on the lower bottom surface 84 of the lower accommodation portion 81.

  With the revolving door 11 closing the front opening of the main body of the refrigerator 13, the front edge of the lower fixing portion 31 is covered from the front by the lower covering portion 85 located in front of the lower housing portion 81. Thereby, since the lower side fixing | fixed part 31 cannot be seen from a user, the fall of the beauty | look by the lower side fixing | fixed part 31 can be reduced.

  The lower shaft portion 32 of the lower hinge 30 extends downward, is inserted into the lower insertion hole 34 of the lower hinge 30, and is supported by the lower bearing portion 33. Thereby, the rotary door 11 rotates around the lower shaft portion 32, and the rotary door 11 can open and close the front opening of the main body of the refrigerator 13.

  Further, as shown in FIG. 12B, the edge joint portion 65 a of the vacuum heat insulating material 60 and the edge portion of the outer box portion 50 are fitted into the annular groove 43 of the inner box portion 40. Thereby, at least a part of the end surface of the joint portion 65 a and the end surface of the outer box portion 50 is covered with the frame portion 42 of the inner box portion 40.

  Thus, since the edge joint part 65a is protected from an external force by the frame part 42, peeling of the edge joint part 65a is prevented, and the deterioration of the heat insulation performance of the vacuum heat insulating material 60 due to peeling is reduced. Further, since foreign matter such as water and dust is prevented from entering between the first member 63 and the second member 64 of the edge joint portion 65a, the vacuum heat insulating material 60 is deteriorated by the foreign matter and the edge joint portion 65a is peeled off. Is reduced. Furthermore, since the end surface of the edge joint portion 65a and the end surface of the outer box portion 50 do not appear outside, the design of the vacuum heat insulating casing 10 is improved.

  Moreover, since the outer box part 50 is protected from an external force by the frame part 42, the outer box part 50 is prevented from being damaged, and the deterioration of the design of the vacuum heat insulating casing 10 is reduced. Furthermore, since the front end of the inner box part 40 does not protrude earlier than the outer box part 50, the inner box part 40 is prevented from being damaged, and the design deterioration of the vacuum heat insulating casing 10 is reduced.

  From the above description, many modifications and other embodiments of the present invention will be apparent to persons skilled in the art. Accordingly, the foregoing description should be construed as illustrative only and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the invention. The details of the structure and / or function may be substantially changed without departing from the scope of the invention. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments.

  The vacuum heat insulating casing and the refrigerator according to the present invention are useful as a vacuum heat insulating casing and a refrigerator excellent in heat insulating properties and durability.

10: Vacuum insulation housing 20: Upper hinge (hinge)
21: Upper fixed portion (fixed portion)
22: Upper shaft portion (shaft portion)
23: Upper bearing portion (bearing portion)
24: Upper insertion hole (insertion hole)
30: Lower hinge 31: Lower fixed portion (fixed portion)
32: Lower shaft portion (shaft portion)
33: Lower bearing portion (bearing portion)
34: Lower insertion hole (insertion hole)
40: Inner box (case)
50: Outer box (case)
60: Vacuum heat insulating material 61: Core material 63: First member 64: Second member 66a: Upper first recess (recess, first recess)
66b: Upper second recessed portion (recessed portion, second recessed portion)
67a: Upper joint (joint)
68a: lower first recess (recess, first recess)
68b: lower second recessed portion (recessed portion, second recessed portion)
69a: Lower joint (joint)
70: Upper mounting portion (mounting portion)
71: Upper accommodation part (accommodation part)
75: Upper covering portion (covering portion)
80: Lower mounting portion (mounting portion)
81: Lower housing part (housing part)
85: Lower coating part (coating part)

Claims (4)

A flat vacuum heat insulating housing fixed to a fixed body via a hinge,
A mounting portion to which the hinge is attached is formed in a part of the periphery, and a flat plate-like case having an internal space;
A vacuum heat insulating material housed in the internal space,
The case is formed such that a portion corresponding to the attachment portion is recessed toward the inner space side,
The vacuum heat insulating material is configured such that a core material is enclosed in a container including a member formed by a laminated portion of a resin layer made of a thermoplastic resin and a gas barrier layer, and is recessed so as to be aligned with the mounting portion. A vacuum heat insulating housing having a recess. The hinge includes a bearing portion formed in the mounting portion and having an insertion hole, a shaft portion inserted through the insertion hole, and a fixing portion that supports the shaft portion and is fixed to the fixed body. Have
The mounting portion is formed with a receiving portion in which the fixing portion is disposed,
The concave portion of the vacuum heat insulating material has a first concave portion that is recessed to match the housing portion, and a second concave portion that is recessed to match the bearing portion, and the first concave portion and the second concave portion. The vacuum heat insulation housing according to claim 1, wherein the recess has a step shape. The case has a covering portion extending along the main surface of the case so as to cover the fixing portion arranged in the housing portion,
The container of the vacuum heat insulating material has a concave first member that houses the core material, and a second member that joins the first member and seals the opening of the first member, The vacuum heat insulation housing according to claim 2, wherein a portion corresponding to the concave portion of a joint portion between one member and the second member is extended along the covering portion.   The refrigerator provided with the vacuum heat insulation housing | casing in any one of Claims 1-3.

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