Refrigerator

Abstract

The present application includes a hinge structure that supports a door (11) openably and closably with respect to a main body, and a wiring wire (50a) that connects a main body side control portion provided to the main body and a door side control portion provided to the door (11). The hinge structure includes a hinge member (20) mounted to an upper portion of the main body, a guide pin, and a guide groove (34) that receives the guide pin. The door (11) performs an opening and closing operation while being guided by the guide pin or the guide pin being guided by the guide groove (34). The door (11) includes a wiring wire hole (53) through which the wiring wire (50a) passes. The wiring wire hole (53) is located near the guide groove (34) in a portion of the door (11) other than the guide pin and the guide groove (34) in the upper portion of the door (11).

Description

Technical Field

[0001] This disclosure relates to the hinge structure of a cold storage facility. Background Technology

[0002] Patent document 1 discloses a cold storage unit including a door and a hinge body. A guide block is provided on the door, a rotating shaft is provided in the hinge body, and a rotating shaft groove is provided in the guide block. Utilizing the structure of the hinge body, the weight and friction of the door are distributed to the first and second plates of the hinge body, reducing wear and extending the service life of the cold storage door.

[0003] Furthermore, Patent Document 2 relates to a scheme in which wiring wires are inserted from a notch provided on the circumferential surface of the rotating shaft of the hinge component, and the wiring wires are arranged coaxially with the rotating shaft.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Publication No. 2020-521102

[0007] Patent Document 2: Japanese Patent Application Publication No. 8-296952 Summary of the Invention

[0008] This invention provides a cold storage unit that can further prevent damage to wiring by utilizing the hinge structure of the cold storage unit, which enables the door to open, even when the cold storage unit is installed close to a wall.

[0009] One embodiment of the cold storage unit of the present invention includes: a hinge structure that supports a door flexibly opening and closing relative to a main body; and wiring connecting a main body-side control unit disposed on the main body and a door-side control unit disposed on the door. The hinge structure includes a hinge component mounted on the upper part of the main body, a guide pin, and a guide groove for receiving the guide pin. The door opens and closes by being restricted by the guide pin via the guide groove or by the guide pin being restricted by the guide groove. The door includes a wiring hole through which the wiring passes. The portion of the wiring hole on the upper part of the door, excluding the guide pin and guide groove, is located near the guide pin or guide groove.

[0010] With the hinge component and wiring hole of the cold storage in one embodiment of the present invention, the door can be opened even when the cold storage is placed close to a wall, and damage to the wiring can be prevented. Attached Figure Description

[0011] Figure 1 This is a perspective view of the cold storage facility according to Embodiment 1.

[0012] Figure 2This is an exploded perspective view showing the upper hinge structure of the cold storage in Embodiment 1.

[0013] Figure 3 This is a perspective view of the main part of the upper hinge structure in Embodiment 1.

[0014] Figure 4 This is an exploded perspective view showing the upper hinge component and the upper guide component of Embodiment 1.

[0015] Figure 5A This is a top view of the main part of the door in the closed state of Embodiment 1.

[0016] Figure 5B This is a top view of the main part of the door in the slightly open state of Embodiment 1.

[0017] Figure 5C This is a top view of the main part of the door in Implementation 1 with the door open at 90 degrees.

[0018] Figure 5D This is a top view of the main part of the door in the fully open state of Embodiment 1. Detailed Implementation

[0019] (The knowledge background that forms the basis of this invention, etc.)

[0020] The subject of this disclosure is to address the problem of preventing the corner of the door from protruding to the side of the cold storage unit and hitting the side wall when the door is opened, and to prevent damage to the wiring connecting the door-side control unit and the main unit-side control unit when the cold storage unit is installed close to the wall of the installation site.

[0021] Therefore, the present invention provides a cold storage unit that allows the door to be opened and prevents damage to wiring even when the cold storage unit is installed close to a wall.

[0022] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, sometimes detailed descriptions that exceed the necessary limits will be omitted. For example, there may be cases where detailed descriptions of well-known matters or repeated descriptions of substantially the same structures are omitted. This is to avoid making the following description too lengthy and to facilitate understanding by those skilled in the art.

[0023] Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this disclosure and are not intended to limit the subject matter described in the claims.

[0024] (Implementation Method 1)

[0025] The following uses Figure 1 Figure 5 illustrates Implementation Method 1.

[0026] [1-1. Composition]

[0027] Figure 1 This is a perspective view showing a cold storage unit employing the hinge structure and wiring materials involved in this invention. Figure 2 This is an exploded perspective view of the hinge components, representing the overall structure of the cold storage.

[0028] like Figure 1 As shown, the cold storage 1 includes a box-shaped main body 10. The door 11 is mounted on the front surface of the main body 10 and can be opened and closed freely via a hinge structure 12.

[0029] In addition, such as Figure 2 As shown, the hinge structure 12 includes a hinge cover 17, an upper hinge component 20, and an upper guide component 30. The upper hinge component 20 is covered by the hinge cover 17. The upper guide component 30 engages with the upper hinge component 20. The hinge cover 17 houses a wiring cable 50. The wiring cable 50 connects the main body side control unit 51 and the door side control unit 52. The main body side control unit 51 is located in the main body 10 and controls the entire cold storage 1. The door side control unit 52 is located inside the door 11 and is used for user operation, display, etc.

[0030] Furthermore, in this embodiment, the door 11 consists of two doors 11, each installed to be able to open in opposite directions.

[0031] Figure 3 This is a perspective view showing the hinge structure 12 on the upper part of the door 11. Figure 4 This is an exploded perspective view of hinge structure 12.

[0032] Furthermore, the hinge structure 12 of the door 11 is symmetrical from left to right. Therefore, in the following description, only the hinge structure 12 of the door 11 located on the right side when viewed from the front will be described.

[0033] like Figure 3 and Figure 4 As shown, flat upper hinge components 20 are installed on the upper part of both sides of the main body 10.

[0034] The upper hinge component 20 includes a base 21, a pin support 22, and an upper notch 23. The base 21 is fixed to the body 10. The pin support 22 extends from the front end of the base 21 to a position overlapping the upper part of the door 11. The upper notch 23 is formed by cutting a notch in the side edge of the end side of the body 10.

[0035] The first upper guide pin 24 and the second upper guide pin 25 are provided on the lower surface of the pin support portion 22 in a downwardly projecting manner. The first upper guide pin 24 and the second upper guide pin 25 are arranged at a predetermined interval. They are arranged in a manner that the line connecting the center of the first upper guide pin 24 and the center of the second upper guide pin 25 is inclined at a predetermined angle relative to the front surface of the door 11.

[0036] An upper hinge mounting recess 13 is formed on the upper side of the door 11, which is formed by cutting out a portion of one side surface and the rear surface of the door 11. As a result, an upper cover wall 14 is formed on the front surface of the door 11. An opening 15 is formed in the upper hinge mounting recess 13 of the door 11.

[0037] The upper guide component 30 is mounted on the upper hinge mounting recess 13 in a manner that closes the opening 15.

[0038] More specifically, the door 11 includes a front panel 11a, a door cover 11b, an inner panel 11c, thermal insulation material (not shown), and a gasket 11e. The front panel 11a forms the front surface. The door cover 11b forms the outer frame of the front panel 11a. The thermal insulation material is disposed inside the area enclosed by the front panel 11a, the door cover 11b, and the inner panel 11c. The gasket 11e is installed on the outer periphery of the inner panel 11c to seal the door 11 and the body 10. An upper hinge mounting recess 13 is formed on the door 11 by cutting out the side surface and rear surface of the door cover 11b on the upper side of the door 11. An upper guide member 30 is mounted to the door 11 in such a way as to close the opening 15 formed in the upper hinge mounting recess 13.

[0039] The upper guide member 30 includes a flat plate portion 31, an upper guide recess 32, a fixing portion 33, and a wiring hole 53. The flat plate portion 31 closes the opening 15. The upper guide recess 32 protrudes towards the lower surface of the flat plate portion 31. The fixing portion 33 is formed at the corner of the flat plate portion 31. The wiring hole 53 allows the wiring cable 50 to pass through. The upper guide member 30 is fixed to the door 11 by screwing a screw (not shown) into the door 11 via the fixing portion 33.

[0040] Furthermore, the upper guide recess 32 has a bottom surface 32a. The bottom surface 32a prevents the insulation material (not shown) from entering the upper guide recess 32 when the insulation material is filled into the door 11.

[0041] Furthermore, the wiring hole 53 is connected to the interior of the cylindrical bushing portion 55. The bushing portion 55 is embedded in the insulation material inside the door 11. Figure 4 As shown, the bushing portion 55 is formed to be longer than the upper guide recess 32.

[0042] Furthermore, as mentioned above, the upper guide member 30 is formed separately from the door cover 11b, but it can also be formed integrally with the door cover 11b.

[0043] Furthermore, it is explained that the wiring hole 53 is provided on the upper guide member 30, but the upper guide member 30 can also be provided on other members, such as the door cover 11b.

[0044] An upper guide groove 34, opening into the flat plate portion 31, is formed on the inner side of the upper guide recess 32. The upper guide groove 34 is constructed by connecting multiple upper guide portions formed of arcuate portions and / or straight portions. In this embodiment, the upper guide groove 34... Figure 5A The upper guide groove 34 is formed on both sides of the wiring hole 53. It includes a first upper guide portion 35, a second upper guide portion 36, and a third upper guide portion 37. The first upper guide portion 35 is formed on one side of the wiring hole 53, extending from the front panel 11a side towards the inner panel 11c side of the door 11. The third upper guide portion 37 is formed on the other side of the wiring hole 53, extending from the front panel 11a side towards the inner panel 11c side of the door 11. The second upper guide portion 36 connects the first upper guide portion 35 and the third upper guide portion 37 between the wiring hole 53 and the inner panel 11c.

[0045] Therefore, the upper guide groove 34 is formed such that, when viewed from above, it appears as... Figures 5A to 5D It's roughly U-shaped.

[0046] Furthermore, the upper guide member 30 includes a rib-shaped protrusion 38 that protrudes upward from the flat plate portion 31 at the opening of the upper guide groove 34. The rib-shaped protrusion 38 is formed around the entire circumference of the upper guide groove 34.

[0047] The upper guide groove 34 receives the first upper guide pin 24 and the second upper guide pin 25. When the door 11 is opened or closed, the rib-shaped protrusion 38 slides with the upper hinge component 20.

[0048] Furthermore, the upper guide member 30 includes a rib-shaped protrusion 54 that protrudes upward from the flat plate portion 31 at the opening of the wiring hole 53. The rib-shaped protrusion 54 is formed around the entire circumference of the wiring hole 53.

[0049] The first upper guide portion 35 is formed to prevent the door 11 from protruding toward the side wall of the cold storage location when the door 11 is opened from the closed state. The second upper guide portion 36 and the third upper guide portion 37 are formed in a manner that allows the door 11 to be opened to 90 degrees.

[0050] The third upper guide portion 37, where the second upper guide pin 25 is located, is configured to further open the opening angle of the door 11 to more than 90 degrees, specifically to about 120 degrees.

[0051] In addition, the wiring hole 53 is located in a position formed by the first to third upper guide portions 35, 36, and 37, which are generally U-shaped.

[0052] [1-2. Actions]

[0053] The operation of the hinge structure 12 and wiring 50 of the cold storage 1 constructed as described above will be explained below.

[0054] Figures 5A to 5D This is an explanatory diagram showing the operation of the upper guide groove 34 and the upper guide pins 24 and 25, as well as the wiring cable 50.

[0055] Figure 5A The door 11 is shown in the closed state. In this state, the first upper guide pin 24 is located in the first upper guide portion 35 of the upper guide groove 34. The second upper guide pin 25 is also located in the first upper guide portion 35 of the upper guide groove 34.

[0056] At this time, the virtual rotation center O is located in front of the front surface plate 11a of the door 11 and on one side of the door 11.

[0057] Furthermore, the wiring 50a, which originates from the door-side control unit 52, passes through the bushing portion 55 and then through the wiring hole 53, and is disposed on the upper surface of the upper hinge member 20, while also being disposed on the upper surface of the pin support portion 22. Additionally, the wiring 50b, which originates from the body-side control unit 51, passes through the upper surface of the base 21 of the hinge member 20. The wiring 50a and wiring 50b are connected on the upper surface of the hinge member 20 by a connector (not shown).

[0058] exist Figure 5A In the top view of the closed door 11, the wiring hole 53 is formed on the outer side compared to the vertically lower projection plane of the pin support portion 22 of the hinge component 20.

[0059] Therefore, it is possible to prevent the wiring cable 50a from contacting the pin support portion 22 when it protrudes from the wiring cable hole 53 and is disposed on the upper surface of the upper hinge member 20, thereby preventing damage to the wiring cable 50.

[0060] Here, the virtual rotation center O is the intersection of the perpendicular lines from the positions of the first upper guide pin 24 and the second upper guide pin 25 relative to the upper guide groove 34.

[0061] exist Figure 5A In this case, the virtual rotation center O is located on the front side of the front panel 11a of the door 11 and on one side of the door 11. When the door 11 is opened, the door 11 begins to open around the virtual rotation center O.

[0062] Normally, when the door 11 opens and closes on a single axis, the door 11 rotates around that single axis. Therefore, the front corner 11d of the door 11, which is located further forward than the axis, protrudes outward compared to the side surface of the main body 10. As a result, when the cold storage 1 is installed flush against the wall, the door 11 cannot be opened.

[0063] However, in this embodiment, the virtual rotation center O is located in front of the front surface panel 11a of the door 11 and on one side of the door 11. Therefore, when the door 11 is opened, the side corner 11d of the front surface of the door 11 will not protrude from the side surface of the main body 10. Thus, even when the cold storage 1 is installed close to a wall, the door 11 can be opened.

[0064] like Figure 5B As shown, when the door 11 is further opened, the first upper guide pin 24 is located in the middle of the first upper guide portion 35 of the upper guide groove 34, and the second upper guide pin 25 is located in the position of the second upper guide portion 36 of the upper guide groove 34.

[0065] At this time, the virtual rotation center O is located approximately on the front surface of the door 11 and is positioned inside one side of the door 11. As the door 11 is opened, the positional relationship between the first upper guide pin 24 and the second upper guide pin 25 and the upper guide groove 34 changes, and consequently, the position of the virtual rotation center O also moves inward toward the inside of the door 11.

[0066] Furthermore, in this state, the wiring hole 53 is also positioned on the outer side compared to the vertically lower projection surface of the pin support portion 22 of the hinge component 20.

[0067] Therefore, it is possible to prevent the wiring wire 50a from contacting the pin support portion 22 when it protrudes from the wiring wire hole 53 and is disposed on the upper surface of the hinge member 20, and to prevent damage to the wiring wire 50.

[0068] With door 11 open to approximately 90°, as follows: Figure 5C As shown, the first upper guide pin 24 is located at the position of the second upper guide portion 36 of the upper guide groove 34, and the second upper guide pin 25 is located at the position of the third upper guide portion 37 of the upper guide groove 34.

[0069] At this time, the virtual rotation center O is located more inward from one side of the door 11, but the door 11 is in an open state. Therefore, the side corner (front surface side corner) 11d of the door 11 does not protrude to the side of the main body 10.

[0070] Furthermore, in this state, the wiring hole 53 is also positioned on the outer side compared to the vertically lower projection surface of the pin support portion 22 of the hinge component 20.

[0071] Therefore, it is possible to prevent the wiring wire 50a from contacting the pin support portion 22 when it protrudes from the wiring wire hole 53 and is disposed on the upper surface of the hinge member 20, and to prevent damage to the wiring wire 50.

[0072] like Figure 5D As shown, in this embodiment, the door 11 can be opened to about 120° in a fully open state, in which the first upper guide pin 24 and the second upper guide pin 25 are located on the third upper guide portion 37 of the upper guide groove 34.

[0073] At this time, the virtual rotation center O is located near the wiring hole 53.

[0074] Furthermore, by forming a rib-shaped protrusion 54 on the outer periphery of the wiring hole 53, the gap between the pin support portion 22 of the hinge component 20 and the rib-shaped protrusion 54 can be reduced, thereby reducing the biting of the wiring wire 50a.

[0075] In this embodiment, the upper guide groove 34 is formed in a generally U-shape by the first upper guide portion 35, the second upper guide portion 36, and the third upper guide portion 37. This allows the virtual rotation center O to move near the wiring hole 53. Consequently, the movement of the wiring cable 50a can be reduced, and the opening and closing of the door 11 can be performed while suppressing damage to the wiring.

[0076] When the door 11 is further opened or closed, the wiring hole 53 is always located outside the vertically lower projection plane of the hinge member 20. Therefore, contact between the wiring wire 50 passing through the wiring hole 53 and the hinge member 20 can be suppressed. Furthermore, even when a contact protection member (not shown) is provided at the end of the hinge member 20, the contact protection member does not contact the wiring hole 53 during door opening and closing. Therefore, contact pressure can be reduced, and damage to the wiring wire caused by door opening and closing can be suppressed.

[0077] Furthermore, the wiring hole 53 is positioned in a roughly U-shape, enclosed by the upper guide groove 34 and the front surface plate 11a. Thus, as... Figures 5A to 5D In this way, the movement of the wiring 50 caused by the opening and closing of the door 11 can be reduced, and damage to the wiring 50 caused by contact with the end of the pin support portion 22 of the hinge component 20 can be suppressed.

[0078] As described above, the hinge structure 12 located at the upper part of the door 11 has been explained, but the same hinge structure is also formed at the lower part of the door 11. In addition, the wiring hole 53 may also be configured to be located near the guide pin or guide groove of the hinge structure 12 located at either the upper or lower part of the door 11.

[0079] Furthermore, not limited to the above configuration, the guide groove 34 may also be formed on the upper hinge member 20 fixed to the main body 10. The first guide pin 24 and the second guide pin 25 may also be fixed to the guide member 30 located on the upper part of the door 11 in an upward extending manner. The wiring hole 53 may also be formed on the guide member 30. The first guide pin 24 and the second guide pin 25 may also restrict the opening and closing action of the door 11 by the guide groove 34.

[0080] This helps to prevent damage to the wiring cable 50.

[0081] [1-3. Effects, etc.]

[0082] As described above, in this embodiment, the cold storage 1 includes a hinge structure 12 that supports a door 11 that opens and closes freely relative to the main body 10, and a wiring cable 50 connecting a main body-side control unit 51 provided on the main body 10 and a door-side control unit 52 provided on the door 11. The hinge structure 12 includes: an upper hinge component 20 mounted on the upper part of the main body 10; a guide pin fixedly provided on the upper hinge component 20; a guide component 30 mounted on the upper part of the door 11; and a guide groove 34 provided on the guide component 30 for receiving the guide pin. The door 11 opens and closes via the guide groove 34 and is restricted by the guide pin. The door 11 includes a wiring cable hole 53 through which the wiring cable 50 passes. The wiring cable hole 53 is located near the guide groove 34 on the upper part of the door 11.

[0083] Therefore, when the door 11 is opened, the wiring hole 53 moves inward toward the body 10 along with the door 11 relative to the hinge component 20, which can suppress the front surface corner 11d of the door 11 from protruding toward the side of the body 10 and suppress the damage to the wiring 50 caused by the movement of the wiring hole 53.

[0084] In addition, wiring holes 53 are formed between the guide groove 34 and the front surface plate 11a of the door 11.

[0085] Therefore, by positioning the wiring hole 53 near the guide groove 34 of the guide pin of the hinge component 20, the movement of the wiring wire 50 within the wiring hole 53 can be reduced.

[0086] Furthermore, a wiring hole 53 is provided on the guide member 30. This reduces the positional deviation between the wiring hole 53 and the guide groove 34 of the guide member 30, suppresses the offset of the wiring 50, and ensures reliability.

[0087] Furthermore, the guide member 30 includes a cylindrical bushing portion 55, and the wiring hole 53 communicates with the bushing portion 55. Therefore, it is possible to suppress the misalignment of the wiring wire 50 caused by the foaming of the insulation material filling the door 11 or to suppress damage to the wiring wire 50.

[0088] In addition, the wiring 50 connected to the door-side control unit 52 is inserted into the bushing 55 and connected to the main body-side control unit 51 through the wiring hole 53 above the hinge member 20.

[0089] This can suppress damage to the wiring cable 50 and control the door-side control unit 52.

[0090] Furthermore, the door 11 opens and closes via a guide pin restricted by the guide groove 34, and the wiring hole 53 is located on the outer side of the vertically lower projection surface of the hinge component 20. Therefore, damage to the wiring 50 can be suppressed.

[0091] As described above, Embodiment 1 has been explained as an example of the disclosed technology in this application. However, the technology in this disclosure is not limited to this and can be applied to embodiments with modifications, substitutions, additions, omissions, etc. Furthermore, the constituent elements described in Embodiment 1 can be combined to form new embodiments.

[0092] Industrial applications

[0093] This disclosure is applicable to refrigerators, microwave ovens, and other household appliances that enable door opening and closing, even when installed near an indoor wall.

[0094] Symbol Explanation

[0095] 1. Cold storage

[0096] 10 main body

[0097] 11 doors

[0098] 11a Front Panel

[0099] 11b Door Cover

[0100] 11c Inner Panel

[0101] 11d Front surface side corner

[0102] 11e Washer

[0103] 12. Hinge structure

[0104] 13 Upper hinge mounting recess

[0105] 14. Upper covering wall

[0106] 15 Openings

[0107] 17. Hinge cover

[0108] 20. Upper hinge assembly (hinge assembly)

[0109] 21 Base

[0110] 22 Pin Support

[0111] 23. Upper notch (upper cut)

[0112] 24, 25 Upper guide pins (guide pins)

[0113] 30 Upper guide component (guide component)

[0114] 31. Planar section

[0115] 32 Upper guide recess

[0116] 32a Bottom surface

[0117] 33 Fixing part

[0118] 34. Upper guide groove (guide groove)

[0119] 35. First upper guide section

[0120] 36. Second upper guide section

[0121] 37. Third upper guide section

[0122] 38 rib-like protrusions

[0123] 50, 50a, 50b cabling materials (wiring / cabling / cable / wiring materials)

[0124] 53 Wiring cable holes

[0125] 54 rib-like protrusions

[0126] 55 Bushing section

[0127] O Virtual rotation center.

Claims

1. A cold storage warehouse, characterized in that, include: The hinge structure supports the door, allowing it to open and close freely relative to the main body. and The wiring cable connects the main body-side control unit of the main body and the door-side control unit of the door. The hinge structure includes a hinge component mounted on the upper part of the body, two guide pins, and a generally U-shaped guide groove for receiving the two guide pins. The door opens and closes around a virtual rotation center different from that of the two guide pins, either by being restricted by the guide groove or by the two guide pins being restricted by the guide groove. The virtual center of rotation is the intersection of the perpendicular lines of the two guide pins relative to the guide groove. The door includes a wiring hole through which the wiring wires pass. The wiring hole, excluding the two guide pins and the guide groove on the upper part of the door, is disposed in the area enclosed by the generally U-shaped guide groove and the front panel of the door, and is located near the virtual rotation center that moves with the opening and closing of the door.

2. The cold storage warehouse as described in claim 1, characterized in that, The hinge structure includes a guide component disposed at the upper part of the door. The guide groove is disposed on the guide component. The two guide pins are fixed to the hinge component.

3. The cold storage warehouse as described in claim 1, characterized in that, The hinge structure includes a guide component disposed at the upper part of the door. The two guide pins are fixed to the guide component. The guide groove is disposed on the hinge component.

4. The cold storage warehouse as described in claim 2, characterized in that, The wiring hole is located near the guide groove.

5. The cold storage warehouse as described in claim 4, characterized in that, The wiring hole is provided in the guide component.

6. The cold storage warehouse as described in claim 5, characterized in that, The guide component includes a cylindrical bushing portion. The wiring hole is connected to the bushing portion.

7. The cold storage warehouse as described in claim 6, characterized in that, The wiring cable connected to the door-side control unit is inserted into the bushing portion and connects to the main body-side control unit through the wiring cable hole above the hinge component.

8. The cold storage facility as described in any one of claims 1 to 7, characterized in that, The wiring hole is located on the outer side of the vertically lower projection plane of the hinge component.

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