Load bearing member, door support device, and refrigeration device

Abstract

This load-receiving member is used together with a hinge that supports a door in a rotatable state with respect to a door support member, and is provided with: a first member that has an upward load-receiving surface and is fixed to the door support member; and a second member fixed to the door and having a load-receiving surface facing downward, the load-receiving surface and the load-receiving surface being in sliding contact with each other in a vertically opposed state on a rotation center axis of the hinge in a use state.

Description

Technical Field

[0001] The invention relates to a load bearing component, a door supporting device and a refrigerating device. Background Art

[0002] Conventionally, there is known a refrigeration device including a box portion including a storage chamber, as disclosed in Patent Document 1. Such a refrigeration device includes an openable and closable door for closing an opening of the box portion.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2007-151001 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] However, in the above-mentioned refrigeration device, the door is supported on the box by a hinge. Such a hinge bears the load of the door and supports the door relative to the box so that the door can rotate. If the weight of the door increases, the load on the hinge increases, and the wear of the hinge may increase.

[0008] The present invention has been made in view of such circumstances, and an object of the present invention is to provide a load receiving member, a door supporting device, and a refrigeration device capable of reducing the load acting on a hinged door.

[0009] Solutions to the problem

[0010] One embodiment of the hinge of the present invention is a load receiving member used together with the hinge, the hinge supports the door with respect to the door supporting member in a state where the door can rotate, and the load receiving member includes:

[0011] a first member having a load-bearing surface facing upward and fixed to the door supporting member; and

[0012] The second component has a receiving surface facing downward and is fixed to the door.

[0013] The load receiving surface and the supported surface are in sliding contact with each other in a vertical direction on the rotation center axis of the hinge in a state of being opposed to each other in the use state.

[0014] One embodiment of the door support device of the present invention comprises:

[0015] A hinge that supports the door relative to the door supporting member in a state where the door can rotate; and

[0016] The load bearing components mentioned above.

[0017] One embodiment of a refrigeration device of the present invention is a refrigeration device including the above-mentioned door supporting device, comprising:

[0018] A box portion as a door support member;

[0019] Door;

[0020] at least one pair of hinges supporting the door relative to the box portion in a state where the door can rotate; and

[0021] A load receiving member is disposed between the pair of hinges in the up-down direction.

[0022] Effects of the Invention

[0023] According to the present invention, it is possible to provide a load receiving member, a door supporting device, and a refrigeration device capable of reducing the load acting on the hinge of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a perspective view of the refrigeration device according to the embodiment of the present invention.

[0025] Figure 2A It is a perspective view showing an example of a fixed-side hinge member of a hinge.

[0026] Figure 2B yes Figure 2A A 11 Towards view.

[0027] Figure 2C yes Figure 2A A 12 Towards view.

[0028] Figure 2D yes Figure 2A A 13 Towards view.

[0029] Figure 3A It is a perspective view showing an example of a door-side hinge component of a hinge.

[0030] Figure 3B yes Figure 3A A 21 Towards view.

[0031] Figure 3C yes Figure 3A A 22 Towards view.

[0032] Figure 3D yes Figure 3A A 23 Towards view.

[0033] Figure 4 This is a diagram for explaining the overall structure of the hinge.

[0034] Figure 5A It is a front view showing an example of a box-side member of a load-bearing member.

[0035] Figure 5B yes Figure 5A A 31 Towards view.

[0036] Figure 5C yes Figure 5A A 32 Towards view.

[0037] Fig. 6A It is a front view showing an example of a door side member of a load receiving member.

[0038] Figure 6B yes Fig. 6A A 41 Towards view.

[0039] Figure 6C yes Fig. 6A A 42 Towards view.

[0040] Figure 7 It is a diagram for explaining the overall structure of a load-bearing member.

[0041] Figure 8 This is a diagram showing the arrangement relationship between the hinge and the load-bearing member. DETAILED DESCRIPTION

[0042] Hereinafter, the load bearing member, the door support device and the refrigeration device of the present invention will be described with reference to the accompanying drawings. It should be noted that the same reference numerals are used for the same components. Figure 1 The matters described together are matters for explaining exemplary embodiments, and are not matters for indicating the only embodiments.

[0043] [Implementation Method]

[0044] Reference Figures 1 to 8 , a load-bearing component, a door support device and a refrigeration device according to an embodiment of the present invention are described.

[0045] Figure 1 This is a perspective view of a refrigeration device 1 according to an embodiment of the present invention. The refrigeration device 1 is, for example, an ultra-low temperature freezer. An ultra-low temperature freezer is a freezer that cools the interior of a refrigerator to an ultra-low temperature (for example, about -80°C). In addition, the refrigeration device 1 may also be a medicine cold storage, a blood cold storage, or a thermostat.

[0046] In the following, when describing the structure of the refrigeration device 1 and each component constituting the refrigeration device 1, the term "refrigeration device" may be used. Figure 1The orthogonal coordinate system (X, Y, Z) shown in FIG. The X direction coincides with the front-to-back direction of the refrigeration device 1 . The + side of the X direction coincides with the front side of the refrigeration device 1 . The - side of the X direction coincides with the rear side of the refrigeration device 1 .

[0047] In addition, the Y direction is consistent with the left-right direction of the freezing device 1 and the width direction of the freezing device 1. The + side of the Y direction is consistent with the left side when the freezing device 1 is observed from the front of the freezing device 1. The - side of the Y direction is consistent with the right side when the freezing device 1 is observed from the front of the freezing device 1. The Z direction is consistent with the up-down direction of the freezing device 1. The + side of the Z direction is consistent with the upper side of the freezing device 1. The - side of the Z direction is consistent with the lower side of the freezing device 1.

[0048] Hereinafter, a basic structure of the refrigeration device 1 will be briefly described. The refrigeration device 1 of the present embodiment includes a main body 12 and a mechanical part 20 .

[0049] The main body 12 is box-shaped. A heat insulating material (not shown) is disposed inside the wall constituting the main body 12. The main body 12 includes a box 13, an outer door 16, an inner door 17, and a handle 18.

[0050] The box portion 13 corresponds to an example of a door supporting member, and includes an inner box 14 and an outer box 15 .

[0051] The inner box 14 corresponds to an example of a door support member, and is formed of, for example, a metal plate and / or a synthetic resin plate. The inner box 14 is composed of a box-shaped member having an opening at the front surface.

[0052] The inner box 14 has a storage chamber 140. The storage chamber 140 is divided into a plurality of (two in this embodiment) partition storage chambers 142A and 142B by a partition plate 141.

[0053] In the present embodiment, the storage chamber 140 is divided into an upper partitioned storage chamber 142A and a lower partitioned storage chamber 142B by a partition plate 141. The partitioned storage chambers 142A and 142B each have an opening on the front surface.

[0054] In addition, the number of partitions is not limited to the number of partitions 141 in the present embodiment. That is, the number of partitioned storage chambers is not limited to the number of partitioned storage chambers 142A and 142B in the present embodiment. In addition, the partitions may be omitted.

[0055] The outer box 15 is an example of a door support member, and is made of, for example, a metal plate and / or a synthetic resin plate. The outer box 15 is made of a box-shaped member that is open on the front surface. The outer box 15 is made of a box-shaped member that is larger than the inner box 14. The inner box 14 is accommodated in the outer box 15.

[0056] The outer door 16 is mounted on the box portion 13 in a state where the opening of the outer box 15 can be opened and closed (i.e., opened or closed). When the outer door 16 closes the opening of the outer box 15 (hereinafter, also referred to as "the closed state of the outer door 16"), the outer box 15 is in a sealed state. A heat insulating material (not shown) is arranged inside the outer door 16. In addition, hereinafter, the state in which the outer door 16 is opened is also referred to as "the open state of the outer door 16".

[0057] The inner door 17 is provided at a position closer to the inner side than the outer door 16. In addition, unless otherwise specified, the inner side refers to a side closer to the inner box 14 and the outer box 15 when the outer door 16 and the inner door 17 are closed. In addition, unless otherwise specified, the outer side refers to a side farther from the inner box 14 and the outer box 15 when the outer door 16 and the inner door 17 are closed.

[0058] The inner door 17 is attached to the box portion 13 in a state where the openings 142a and 142b that partition the storage chambers 142A and 142B of the inner box 14 can be opened and closed. The openings 142a and 142b each correspond to an example of an opening of the box portion.

[0059] In the present embodiment, the inner door 17 includes an upper inner door 17a and a lower inner door 17b. The upper inner door 17a is configured to be able to open and close an opening 142a that partitions the upper storage chamber 142A.

[0060] When the upper inner door 17a and the lower inner door 17b are closed, their rear sides face the partitioned storage chambers 142A and 142B, respectively.

[0061] Hereinafter, the state in which the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) is closed is referred to as the "closed state of the inner door 17". In addition, the state in which the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) is opened is referred to as the "opened state of the inner door 17".

[0062] The upper inner door 17a and the lower inner door 17b respectively have door side covers 170a and 170b which are opposite to the openings 142a and 142b of the partition storage chambers 142A and 142B respectively when closed. The door side covers 170a and 170b are rectangular in shape and have approximately the same area as the openings 142a and 142b of the partition storage chambers 142A and 142B.

[0063] The upper inner door 17a and the lower inner door 17b have door side frame-shaped areas 171a and 171b around the door side cover parts 170a and 170b, respectively. The door side frame-shaped areas 171a and 171b are rectangular frame-shaped areas surrounding the door side cover parts 170a and 170b.

[0064] The door side frame-shaped regions 171a and 171b are regions that face inner box side frame-shaped regions 143a and 143b described later in a predetermined direction (in the front-rear direction in the present embodiment) when the inner door 17 is in a closed state.

[0065] In addition, the upper inner door 17a and the lower inner door 17b have rectangular frame-shaped door-side bearing parts 172a and 172b along the door-side frame-shaped areas 171a and 171b, respectively. The door-side bearing parts 172a and 172b are also called "door-side buffers". The door-side bearing parts 172a and 172b are parts that abut against the packing 3 described later when the inner door 17 is closed.

[0066] The handle 18 is for a user to hold when opening or closing the outer door 16 .

[0067] The mechanical part 20 is arranged directly below the main body 12. The mechanical part 20 accommodates a compressor (not shown), a condenser (not shown), and a pressure reducer (not shown) constituting a refrigeration circuit (not shown) capable of cooling the storage chamber 140 (specifically, the partitioned storage chambers 142A and 142B) to below -80°C.

[0068] An evaporator (not shown) constituting a refrigeration circuit is disposed in a side wall of the main body 12. The inside of the storage chamber 140 (specifically, the partitioned storage chambers 142A and 142B) is cooled by the operation of the refrigeration circuit.

[0069] Furthermore, the refrigeration device 1 includes the packing 3 sandwiched between the inner box 14 and the inner door 17 of the box portion 13 .

[0070] The packing 3 is provided in a rectangular frame-shaped region (hereinafter also referred to as "inner box side frame-shaped regions 143a, 143b") surrounding the openings 142a, 142b that partition the storage chambers 142A, 142B in the inner box 14.

[0071] The inner box side frame-shaped areas 143a and 143b are respectively formed by annular (specifically, rectangular frame-shaped) surfaces facing forward. The shapes of the inner box side frame-shaped areas 143a and 143b can be the shapes of the outer shapes when viewed from the front along the openings 142a and 142b that separate the storage chambers 142A and 142B. In addition, viewing from the front means viewing the refrigeration device 1 from the front.

[0072] The inner box side frame-shaped area 143a is an area surrounding the upper partition storage chamber 142A. The inner box side frame-shaped area 143a is composed of the front surface of the upper half of the inner box 14 and the front surface of the partition plate 141. In addition, the inner box side frame-shaped area 143a can also be composed of a frame-shaped member (not shown) fixed to the inner box 14 and the partition plate 141.

[0073] The inner box side frame-shaped area 143b is an area surrounding the partition storage chamber 142B on the lower side. The inner box side frame-shaped area 143b is composed of the front surface of the lower half of the inner box 14 and the front surface of the partition plate 141. In addition, the inner box side frame-shaped area 143b can also be composed of a frame-shaped member (not shown) fixed to the inner box 14 and the partition plate 141.

[0074] In the present embodiment, packings 3 are provided in the inner box side frame-shaped regions 143a and 143b, respectively.

[0075] The refrigeration device 1 configured as described above includes the door support device 4 that supports the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) on the inner box 14 in a rotatable state.

[0076] In the following description, the end of the inner box 14 that supports the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) is referred to as the "supporting side end". In addition, the end of the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) supported by the inner box 14 is referred to as the "supported end".

[0077] In the present embodiment, the supporting side end of the inner box 14 corresponds to the right end of the inner box 14. In addition, the supported end of the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) corresponds to the end of the inner door 17 arranged on the right side when the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) is in the closed state.

[0078] The door support device 4 includes an upper door support device 4a and a lower door support device 4b. The upper door support device 4a and the lower door support device 4b each correspond to an example of a door support device.

[0079] The upper door support device 4a supports the upper inner door 17a on the inner box 14. The lower door support device 4b supports the lower inner door 17b on the inner box 14. The upper door support device 4a and the lower door support device 4b have the same structure. The structure of the upper door support device 4a is described below. As for the structure of the lower door support device 4b, it is sufficient to appropriately read the description of the upper door support device 4a as the description of the lower door support device 4b.

[0080] The upper door support device 4 a includes a plurality of (two in the present embodiment) hinges 41 a and 41 b and a load receiving member 5 .

[0081] The upper hinge 41a supports the upper end of the supported end of the upper inner door 17a on the upper end of the portion of the supporting end of the inner box 14 corresponding to the upper inner door 17a. The lower hinge 41b supports the lower end of the supported end of the upper inner door 17a on the lower end of the portion of the supporting end of the inner box 14 corresponding to the upper inner door 17a.

[0082] The structure of the hinge 41a will be described below. The structure of the hinge 41b is the same as that of the hinge 41a. The structure of the hinge 41b can be understood by appropriately rereading the description of the hinge 41a as the description of the hinge 41b.

[0083] The hinge 41 a includes a fixed-side hinge member 411 , a door-side hinge member 412 , and a shaft member 413 .

[0084] like Figure 2A to Figure 2D As shown in FIG. 1 , the fixed-side hinge member 411 corresponds to an example of the fixed-side hinge member, and includes a fixed-side plate portion 411 a and a fixed-side sleeve portion 411 b. The fixed-side hinge member 411 also corresponds to an example of a portion fixed to the door support member.

[0085] The fixed side plate portion 411a is a rectangular plate-shaped member made of metal. The material of the fixed side plate portion 411a can be, for example, stainless steel such as SUS304. The fixed side plate portion 411a is a portion fixed to the inner box 14. The fixed side plate portion 411a has a plurality of through holes 411c formed in an array in the up-down direction.

[0086] The fixed side plate portion 411a is fixed to the inner box 14 by a plurality of fastening parts (not shown) such as screws inserted through the through holes 411c. Specifically, the fixed side plate portion 411a is fixed to the upper end portion of the support end portion of the inner box 14.

[0087] The fixed-side sleeve portion 411b is a portion that supports the shaft member 413 described later. The fixed-side sleeve portion 411b is a cylindrical member made of metal and extending in the up-down direction. The material of the fixed-side sleeve portion 411b can be, for example, stainless steel such as SUS304.

[0088] The fixed side sleeve portion 411b is formed integrally with the fixed side plate portion 411a. Such a fixed side plate portion 411a is formed by bending a part of the metal plate constituting the fixed side plate portion 411a. Both ends of the fixed side sleeve portion 411b in the up-and-down direction are open.

[0089] The fixed-side sleeve portion 411b has a load-bearing surface 411e on a circular ring on the upper end surface. The load-bearing surface 411e is connected to a receiving surface 412d (see FIG. 4A ) of a door-side sleeve portion 412b of a door-side hinge member 412 described later. Figure 3A The load receiving surface 411e is a portion that supports the load of the upper inner door 17a by abutting (sliding contact) with the received surface 412d.

[0090] In addition, the end portion of the fixed side sleeve portion 411b in the circumferential direction is welded by a welding portion 411f (see Figure 2C ) is joined to the fixed side plate portion 411a.

[0091] like Figure 3A to Figure 3D As shown, the door-side hinge member 412 corresponds to an example of a door-side hinge member, and includes a door-side plate portion 412a and a door-side sleeve portion 412b. The door-side hinge member 412 also corresponds to an example of a portion fixed to the door.

[0092] The door side plate 412a is a rectangular plate-shaped member made of metal. The material of the door side plate 412a can be, for example, stainless steel such as SUS304. The door side plate 412a is a portion fixed to the upper inner door 17a. The door side plate 412a has a plurality of through holes 412c arranged in the up-down direction.

[0093] The door side plate 412a is fixed to the upper inner door 17a by a plurality of fastening parts (not shown) such as screws inserted through the through holes 412c. Specifically, the door side plate 412a is fixed to the upper end of the supported end of the inner door 17.

[0094] The door-side sleeve portion 412b is a portion that supports the shaft member 413 described later. The door-side sleeve portion 412b is a cylindrical member made of metal and extending in the up-down direction. The material of the door-side sleeve portion 412b can be, for example, stainless steel such as SUS304.

[0095] The door side sleeve portion 412b is formed integrally with the door side plate portion 412a. Such a door side sleeve portion 412b is formed by bending a part of the metal plate constituting the door side plate portion 412a. Both ends of the door side sleeve portion 412b in the up and down directions are open.

[0096] The door-side sleeve portion 412b has a receiving surface 412d on a circular ring on the lower end surface. The receiving surface 412d abuts against the load receiving surface 411e of the fixed-side sleeve portion 411b of the fixed-side hinge member 411 in the vertical direction.

[0097] In addition, the end portion of the door-side sleeve portion 412b in the circumferential direction is welded by a welding portion 412e (see Figure 3C) is joined to the door side panel portion 412a.

[0098] like Figure 2A and Figure 2B As shown, the shaft member 413 is a shaft-shaped member made of metal and extending in the up-down direction. The material of the shaft member 413 can be, for example, stainless steel such as SUS304. The lower half of the shaft member 413 is inserted into the fixed side sleeve portion 411b.

[0099] The shaft member 413 is prevented from falling off from the fixed-side sleeve portion 411b. Specifically, the shaft member 413 is prevented from falling off from the fixed-side sleeve portion 411b by engagement with a plurality of fastening portions 411d formed on the fixed-side sleeve portion 411b.

[0100] In addition, if Figure 4 As shown, the upper half of the shaft member 413 is inserted from below into the door-side sleeve portion 412b of the door-side hinge member 412. The upper end portion of the shaft member 413 protrudes upward from the upper end portion of the door-side sleeve portion 412b. An E ring 414 is fixed to the upper end portion of the shaft member 413. The E ring 414 prevents the shaft member 413 from slipping out of the door-side sleeve portion 412b of the door-side hinge member 412.

[0101] The shaft member 413 having the above structure is a member constituting the central axis of rotation of the hinge 41a. 41 It is a straight line parallel to the up and down direction.

[0102] The door-side hinge member 412 can be connected to the shaft member 413 (specifically, the central axis O 41 ) is the center of rotation relative to the fixed side hinge part 411.

[0103] The load receiving member 5 is used together with the hinges 41a and 41b. The load receiving member 5 is provided between the upper hinge 41a and the lower hinge 41b in the vertical direction (approximately in the center) (see Figure 8 ).

[0104] The load receiving member 5 is a member for receiving the load of the upper inner door 17a. By receiving a part of the load of the upper inner door 17a by the load receiving member 5, the load of the upper inner door 17a acting on the hinges 41a and 41b can be reduced.

[0105] Specifically, the load receiving member 5 includes a box-side member 51 and a door-side member 52 .

[0106] The box-side member 51 has a load-bearing surface 513 facing upward, and is fixed to the inner box 14 .

[0107] Specifically, the box-side member 51 corresponds to an example of a first member, and includes a box-side fixing member 511 and a box-side receiving member 512 .

[0108] The box side fixing member 511 is equivalent to an example of the first fixing portion, and has a box side plate portion 511a and a box side sleeve portion 511b. The box side fixing member 511 and the fixed side hinge member 411 of the hinge 41a are components with the same structure. That is, the box side fixing member 511 and the fixed side hinge member 411 are composed of universal components (parts) of the same shape.

[0109] The box side plate 511a corresponds to an example of the first plate portion and is a rectangular plate-shaped member made of metal. The material of the box side plate 511a can be, for example, stainless steel such as SUS304.

[0110] The box side plate portion 511a is a portion fixed to the inner box 14. The box side plate portion 511a has a plurality of through holes 511c formed in a row in the up-down direction.

[0111] The box side plate 511a is fixed to the inner box 14 by a plurality of fastening parts (not shown) such as screws inserted through the through holes 511c. Specifically, the box side plate 511a is fixed to the center of the support end portion of the inner box 14 corresponding to the upper inner door 17a in the vertical direction.

[0112] The box side sleeve part 511b is an example of a first sleeve part, and is a part that supports the box side receiving member 512 described later. The box side sleeve part 511b is a cylindrical member made of metal and extending in the vertical direction. The material of the box side sleeve part 511b can be stainless steel such as SUS304, for example.

[0113] The box side sleeve portion 511b is formed integrally with the box side plate portion 511a. Such a box side sleeve portion 511b is formed by bending a part of the metal plate constituting the box side plate portion 511a. Both ends of the box side sleeve portion 511b in the up-and-down direction are open.

[0114] In addition, the end portion in the circumferential direction of the box-side sleeve portion 511b is joined to the box-side plate portion 511a by a welding portion 511d.

[0115] The box side bearing member 512 is equivalent to an example of the first bearing member, and is a shaft-shaped member made of metal and extending in the up-down direction. The material of the box side bearing member 512 can be, for example, stainless steel such as SUS304. In addition, the material of the box side bearing member 512 can also be a synthetic resin (for example, polyacetal (POM)).

[0116] The box-side receiving member 512 has a shaft portion 512a and a head portion 512b.

[0117] The shaft portion 512a is a shaft-shaped member and has an annular groove 512c in the middle of the outer peripheral surface in the axial direction. The groove 512c is continuous over the entire circumference of the outer peripheral surface of the shaft portion 512a. The outer diameter of the shaft portion 512a is slightly smaller than the inner diameter of the box-side sleeve portion 511b.

[0118] The head 512b is provided at one end (the upper end in this embodiment) of the shaft 512a. The head 512b is disc-shaped. The outer diameter of the head 512b is larger than the outer diameter of the shaft 512a. In addition, the outer diameter of the head 512b is larger than the inner diameter of the box-side sleeve 511b.

[0119] The upper end surface of the head 512b is a circular flat surface, which constitutes a load receiving surface 513. The load receiving surface 513 is in sliding contact with a receiving surface 523 of the door side member 52 described later. Specifically, the load receiving surface 513 and the receiving surface 523 are located at the rotation center axis O of the hinges 41a and 41b. 41 The upper and lower parts are in sliding contact with each other in the vertical direction (refer to Figure 8 ).

[0120] Such a box side support member 512 is fixed to the box side sleeve portion 511b in a state where the shaft portion 512a is inserted into the box side sleeve portion 511b from above (see Figure 5A ). In this state, the head 512b is arranged on the upper end surface of the box side sleeve part 511b. The lower surface of the head 512b abuts against the upper end surface of the box side sleeve part 511b.

[0121] In addition, the box-side receiving member 512 is prevented from coming off relative to the box-side sleeve portion 511 b by the engagement between the fastening portion 512 d provided on the box-side sleeve portion 511 b and the groove 512 c.

[0122] The door side member 52 corresponds to an example of a second member, has a receiving surface 523 facing downward, and is fixed to the upper inner door 17a.

[0123] Specifically, the door-side member 52 includes a door-side fixing member 521 and a door-side received member 522 .

[0124] The door side fixing member 521 corresponds to an example of the second fixing portion, and includes a door side plate portion 521a and a door side sleeve portion 521b. The door side fixing member 521 also corresponds to an example of a portion fixed to the door.

[0125] The door-side fixing member 521 and the door-side hinge member 412 of the hinge 41a are members having the same structure. That is, the door-side fixing member 521 and the door-side hinge member 412 are composed of members (components) of the same shape that are commonly used.

[0126] The door side plate portion 521a corresponds to an example of the second plate portion, and is a rectangular plate-shaped member made of metal. The material of the door side plate portion 521a can be, for example, stainless steel such as SUS304.

[0127] The door side plate portion 521a is a portion fixed to the upper inner door 17a. The door side plate portion 521a has a plurality of through holes 521c formed in a row in the up-down direction.

[0128] The door side plate 521a is fixed to the upper inner door 17a by a plurality of fastening parts (not shown) such as screws inserted through the through holes 521c. Specifically, the door side plate 521a is fixed to the center of the supported end of the inner door 17 (specifically, the upper inner door 17a) in the vertical direction.

[0129] The door side sleeve part 521b is an example of a second sleeve part, and is a part that supports the door side supported member 522 described later. The door side sleeve part 521b is a cylindrical member made of metal and extending in the vertical direction. The material of the door side sleeve part 521b can be stainless steel such as SUS304, for example.

[0130] The door-side sleeve portion 521b is formed integrally with the door-side plate portion 521a. Such a door-side sleeve portion 521b is formed by bending a part of the metal plate constituting the door-side plate portion 521a. Both ends of the door-side sleeve portion 521b in the up-and-down direction are open.

[0131] In addition, the end portion in the circumferential direction of the door-side sleeve portion 521b is joined to the door-side plate portion 521a via a welding portion 521e.

[0132] The door side supported member 522 is equivalent to an example of the second supported member, and is a shaft-shaped member made of synthetic resin and extending in the up-down direction. The material of the door side supported member 522 can be, for example, polyacetal (POM). In addition, the material of the door side supported member 522 can also be metal (for example, stainless steel such as SUS304).

[0133] The door-side supported member 522 has a shaft portion 522a and a head portion 522b.

[0134] The outer diameter of the shaft portion 522a is slightly smaller than the inner diameter of the door-side sleeve portion 521b.

[0135] The head 522b is provided at one end (the lower end in this embodiment) of the shaft 522a. The head 522b is disc-shaped. The outer diameter of the head 522b is larger than the outer diameter of the shaft 522a. In addition, the outer diameter of the head 522b is larger than the inner diameter of the door-side sleeve 521b.

[0136] The lower end surface of the head 522b is a circular flat surface, which constitutes a receiving surface 523. The receiving surface 523 is in sliding contact with the load receiving surface 513 of the box side member 51 (see Figure 7 and Figure 8 ).

[0137] Such a door-side supported member 522 is fixed to the door-side sleeve portion 521b (see FIG. 1 ) in a state where the shaft portion 522a is inserted (specifically, pressed) into the door-side sleeve portion 521b from below. Fig. 6A ).

[0138] In this state, the head 522b is arranged below the lower end surface of the door-side sleeve portion 521b. The upper surface of the head 522b abuts against the lower end surface of the door-side sleeve portion 521b.

[0139] The load bearing member 5 having the above structure is Figure 7 and Figure 8 Use in the conditions shown. Figure 7 and Figure 8 In the use state shown, the load bearing surface 513 of the box side member 51 fixed to the inner box 14 and the bearing surface 523 of the door side member 52 fixed to the upper inner door 17a are aligned with the rotation center axis O of the hinge 41a. 41 The upper and lower parts are in sliding contact with each other in a relative state in the up-down direction.

[0140] In addition, if Figure 7 As shown, the load receiving member 5 does not have a member corresponding to the shaft member 413 of the hinges 41a and 41b.

[0141] In other words, the box side member 51 and the door side member 52 of the load receiving member 5 are in sliding contact on the load receiving surface 513 and the received surface 523, but are not connected to each other. Such a load receiving member 5 can support the load of the upper inner door 17a.

[0142] However, the load receiving member 5 alone cannot support the upper inner door 17a with respect to the inner box 14 in a state where the upper inner door 17a can rotate. In this point, the load receiving member 5 is different from the hinges 41a and 41b.

[0143] (Functions and Effects of the Present Embodiment)

[0144] The refrigeration device 1 of this embodiment having the above structure is provided with a door support device 4 (specifically, an upper door support device 4a and a lower door support device 4b). In addition, the door support device 4 (upper door support device 4a and lower door support device 4b) is provided with hinges 41a, 41b and a load-bearing component 5.

[0145] The hinges 41a and 41b support the upper inner door 17a with respect to the inner box 14 in a state where the upper inner door 17a can rotate, for example. The hinges 41a and 41b support the load of the upper inner door 17a.

[0146] In addition, in this embodiment, the load receiving member 5 also supports the load of the upper inner door 17a. Therefore, the load of the upper inner door 17a acting on the hinges 41a and 41b can be reduced. As a result, the wear of the hinges 41a and 41b can be suppressed.

[0147] In the present embodiment, the load of the upper inner door 17a is supported by the two hinges 41a, 41b and the one load receiving member 5. The ratio of the load supported by the hinges 41a, 41b and the load receiving member 5 can be appropriately set.

[0148] For example, by adjusting the shapes of the box-side receiving member 512 and the door-side received member 522 in the load-receiving member 5 (for example, the heights of the heads 512b and 522b), the ratio of the load supported by the load-receiving member 5 can be adjusted.

[0149] In this embodiment, the hinges 41a and 41b and the load receiving member 5 include common components (parts) of the same shape. Specifically, the box-side fixing member 511 of the hinges 41a and 41b is common to the fixing-side hinge member 411 of the load receiving member 5.

[0150] The door-side fixing member 521 of the hinges 41a and 41b is common to the door-side hinge member 412 of the load receiving member 5. By adopting such a structure, it is possible to reduce the manufacturing cost and management cost of parts.

[0151] [Notes]

[0152] When implementing the door support device of the present invention, the number of hinges and load-bearing members constituting the door support device is not limited to the number in the above-described embodiment.

[0153] Furthermore, the door supporting device of the present invention can be applied to a door supporting device that supports the outer door 16 with respect to the outer box 15 in the above-mentioned refrigeration device 1.

[0154] The door support device of the present invention can be applied to structures other than refrigeration devices. The door support device of the present invention can be applied to a door support device for supporting a door relative to a door support member in a state where the door can rotate.

[0155] The disclosure contents of the specification, drawings and abstract contained in Japanese patent application No. 2022-189094 filed on November 28, 2022 are incorporated herein by reference in their entirety.

[0156] Industrial Applicability

[0157] The present invention can be suitably applied not only to a refrigeration device but also to various door support devices for supporting a door relative to a door support member in a state where the door is rotatable.

[0158] Description of Reference Numerals

[0159] 1 Refrigeration unit

[0160] 12 Main body

[0161] 13 Box

[0162] 14 Inner box

[0163] 140 Accommodation Room

[0164] 141 Partition

[0165] 142A, 142B Separated Storage Chamber

[0166] 142a, 142b opening

[0167] 143a, 143b Inner box side frame area

[0168] 15 outer box

[0169] 16 Outer Door

[0170] 17 Inner Door

[0171] 17a Upper inner door

[0172] 17b Lower inner door

[0173] 170a, 170b Door side cover

[0174] 171a, 171b Door side frame area

[0175] 172a, 172b Door side receiving portion

[0176] 18 Handle

[0177] 20 Mechanical Department

[0178] 3 Filling

[0179] 4 Door support device

[0180] 4a Upper side door support device

[0181] 4b Lower side door support device

[0182] 41a, 41b Hinge

[0183] 411 Fixed side hinge assembly

[0184] 411a Fixed side panel

[0185] 411b Fixed side sleeve

[0186] 411c Through Hole

[0187] 411d Fastening part

[0188] 411e Load bearing surface

[0189] 411f Welding Department

[0190] 412 Door side hinge parts

[0191] 412a Door side panel

[0192] 412b Door side sleeve

[0193] 412c Through Hole

[0194] 412d Bearing surface

[0195] 412e Welding Department

[0196] 413 Shaft components

[0197] 414 E ring

[0198] 5 Load bearing parts

[0199] 51 Box side parts

[0200] 511 Box side fixing parts

[0201] 511a Box side panel

[0202] 511b Box side sleeve

[0203] 511c Through Hole

[0204] 511d Welding Department

[0205] 512 Box side bearing parts

[0206] 512a Shaft

[0207] 512b Header

[0208] 512c groove

[0209] 512d Fastening part

[0210] 513 Load bearing surface

[0211] 52 Door side parts

[0212] 521 Door side fixing parts

[0213] 521a Door side panel

[0214] 521b Door side sleeve

[0215] 521c Through Hole

[0216] 521d Welding Department

[0217] 522 Door side bearing parts

[0218] 522a Shaft

[0219] 522b Head

[0220] 523 The supported surface.

Claims

1. A load-bearing component used together with a hinge, wherein the hinge supports a door relative to a door supporting component so that the door can rotate, wherein the load-bearing component is characterized in that: a first member having a load-bearing surface facing upward and fixed to the door supporting member; and a second component having a receiving surface facing downward and fixed to the door, The load receiving surface and the received surface are in sliding contact with each other in a vertical direction on the rotation center axis of the hinge in a use state.

2. The load bearing member according to claim 1, wherein: The first component has: A first fixing portion fixed to the door supporting member; and a first bearing component, which is fixed to the first fixing portion and has the load bearing surface on its upper end surface; The second component has: A second fixing portion fixed to the door; and The second supported component is fixed to the second fixing portion and has the supported surface on its lower end surface.

3. The load bearing member according to claim 2, wherein: The first fixing portion has: a first plate portion fixed to the door supporting member; and a first sleeve portion having a cylindrical shape, which is integrally provided with the first plate portion and extends in the up-down direction, The first receiving member is inserted into the first sleeve portion in a state where the upper end portion protrudes upward from the first sleeve portion. The second fixing portion has: a second plate portion fixed to the door; and a second sleeve portion having a cylindrical shape, which is provided integrally with the second plate portion and extends in the up-down direction, The second supported member is inserted into the second sleeve portion in a state where the lower end portion protrudes downward from the second sleeve portion.

4. The load bearing member according to claim 2, wherein: The first fixing part, the first bearing member and the second fixing part are made of metal. The second supported member is made of resin.

5. A door support device, characterized in that: have: A hinge that supports the door relative to the door supporting member in a state where the door can rotate; and The load bearing member according to claim 1.

6. The door supporting device according to claim 5, wherein: The portion of the hinge fixed to the door support member and the portion of the load receiving member fixed to the door support member are composed of common components of the same shape. The portion of the hinge fixed to the door and the portion of the load receiving member fixed to the door are formed of common members of the same shape.

7. The door supporting device according to claim 6, wherein: The hinge has: a fixed-side hinge member constituting a portion fixed to the door support member; a door-side hinge member constituting a portion fixed to the door; a shaft member that supports the door-side hinge member relative to the fixed-side hinge member so that the door-side hinge member can rotate and that constitutes a rotation center axis of the hinge, The first part of the load-bearing member has: a first fixing portion constituting a portion fixed to the door supporting member; and a first bearing component, which is fixed to the first fixing portion and has the load bearing surface on its upper end surface; The second component of the load-bearing component has: A second fixing portion constituting a portion fixed to the door; and The second supported component is fixed to the second fixing portion and has the supported surface on its lower end surface.

8. A refrigeration device, comprising the door support device according to claim 5, wherein the refrigeration device comprises: a box portion as the door supporting member; said door; at least one pair of hinges supporting the door relative to the box portion in a state where the door can rotate; and The load receiving member is arranged between the pair of hinges in the up-down direction.

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