Door body assembly and refrigeration device having the same

Abstract

The application provides a door body assembly and a refrigeration equipment with the same. The door body assembly comprises a door body, a mounting plate vertically arranged on the door body and a rotating shaft detachably mounted on the mounting plate. The mounting plate is provided with a through hole for the rotating shaft to pass through. The mounting plate and the rotating shaft are further provided with positioning structures for rotation positioning. The refrigeration equipment comprises a cabinet and the door body assembly, and the door body assembly is pivotally arranged on the cabinet. Thus, the door body can be quickly mounted, which is simple and convenient and not easy to fall off.

Description

Technical Field

[0001] This invention relates to a door assembly and a refrigeration device having the same, and more particularly to a door assembly that is easy to install and a refrigeration device having the same. Background Technology

[0002] Existing door installations typically employ a hinge structure. During use, the door is pivotally mounted to the housing via hinges, with the hinge axis inserted into a pivot hole in the door, and the hinge secured to the housing with screws. However, this design has the following drawbacks: the door installation structure is complex and inconvenient to operate. Summary of the Invention

[0003] The purpose of this invention is to provide a door assembly that is easy to install and a refrigeration device having the same, thereby simplifying the door installation process.

[0004] To achieve the above-mentioned objectives, the present invention provides a door assembly, which includes a door body, a mounting plate vertically disposed on the door body, and a detachable pivot mounted on the mounting plate. The mounting plate has a through hole for the pivot to pass through, and the mounting plate and the pivot are further provided with positioning structures for rotational positioning of the two.

[0005] As a further improvement of the present invention, the mounting plate has a first surface and a second surface along the mounting direction of the rotating shaft, the rotating shaft has a shaft body, a protruding arm extending radially from the shaft body, the through hole includes a shaft hole through which the shaft body passes and a relief hole through which the protruding arm passes, the relief hole and the shaft hole are connected, and the protruding arm passes through the relief hole from the first surface and abuts against the second surface after rotation.

[0006] As a further improvement of the present invention, a limiting structure is provided between the mounting plate and the rotating shaft to limit the rotation of the rotating shaft. At the same time, the limiting structure cooperates with the protruding arm to limit the axial movement of the rotating shaft.

[0007] As a further improvement of the present invention, the limiting structure includes:

[0008] A stop portion protrudes from the first surface of the mounting plate. The stop portion has a limiting surface facing the same direction as the first surface and a first side surface and a second side surface that are in contact with the first surface.

[0009] A limiting arm, which cooperates with the stop portion, is provided on the shaft body at intervals along the axial direction of the rotating shaft, and the limiting arm has an arm body connected to the shaft body and a protrusion extending out of the arm body.

[0010] The stop arm extends from the side wall of the shaft body. The stop arm and the limiting arm are deflected at a certain angle along the axis of the rotating shaft. After the rotating shaft rotates relative to the mounting plate, the arm body abuts against the limiting surface, and the protrusion rotates from abutting against the first side to abutting against the second side. The stop arm abuts against the door body.

[0011] As a further improvement of the present invention, the limiting structure includes:

[0012] A stop portion protrudes from the second surface of the mounting plate, the stop portion having a first side surface and a second side surface in contact with the second surface;

[0013] The stop arm extends from the side wall of the shaft body. The stop arm and the protruding arm are spaced a certain distance apart along the axis of the rotating shaft and deflected at a certain angle. After the rotating shaft rotates relative to the mounting plate, the protruding arm rotates from the first side to abut against the second side. The stop arm abuts against the first side and the door body.

[0014] As a further improvement of the present invention, the first side is a smoothly transitioned inclined surface, and the angle between the second side and the mounting plate is less than or equal to 90 degrees.

[0015] As a further improvement of the present invention, the mounting plate and the pivot are provided at opposite ends of the door body.

[0016] As a further improvement of the present invention, one end of the door body is provided with the mounting plate and the pivot, and the other end of the door body is fixedly provided with a fixed pivot, the fixed pivot and the pivot are located on the same axis.

[0017] To achieve the objectives of the invention described above, the present invention also provides a refrigeration device having the door assembly, the refrigeration device including a housing and the aforementioned door assembly, the door assembly being pivotally mounted on the housing.

[0018] As a further improvement of the present invention, the refrigeration equipment has a bushing for accommodating the rotating shaft, and the housing is provided with a pre-embedded hole for accommodating the bushing. The bushing is fixed to the housing by a housing foaming process.

[0019] Compared with the prior art, the advantages of the present invention are that it can realize the quick installation of the door, which is simple and convenient and not easy to fall off. Attached Figure Description

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1This is a schematic diagram of the assembled structure of the door assembly according to the first embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure before the shaft rotates after being inserted into the mounting plate;

[0023] Figure 3 yes Figure 1 Schematic diagram of the mounting plate;

[0024] Figure 4 yes Figure 1 Schematic diagram of the rotating shaft;

[0025] Figure 5 This is a schematic diagram of the assembled structure of the door assembly according to the second embodiment of the present invention;

[0026] Figure 6 yes Figure 5 Schematic diagram of the mounting plate;

[0027] Figure 7 yes Figure 5 Schematic diagram of the rotating shaft;

[0028] Figure 8 This is a schematic diagram of a preferred overall structure of the door assembly of the present invention;

[0029] Figure 9 This is an exploded view of the refrigeration equipment of the present invention;

[0030] Figure 10 yes Figure 9 A sectional view of the pre-embedded holes, bushings, and rotating shaft after assembly;

[0031] Figure 11 This is an exploded view of the door locking structure;

[0032] Figure 12 yes Figure 11 Exploded view of direction A after rotating the handle 90 degrees;

[0033] Figure 13 This is a cross-sectional view of the door locking structure after assembly. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0035] Figures 1 to 4 The first embodiment of the door assembly of the present invention is shown.

[0036] like Figure 1As shown, the entire door assembly 100 includes a door body 10, a mounting plate 20, and a pivot 30. The mounting plate 20 is vertically mounted on the door body 10. The pivot 30 is first inserted into the mounting plate 20 from above, and then the pivot 30 is rotated 90 degrees counterclockwise. Through the cooperation of the positioning structure between the pivot 30 and the mounting plate 20, the pivot 30 is stably assembled on the mounting plate 20.

[0037] This structural design results in a simple overall structure, convenient installation, and stable installation of the door 10. It is quick, easy, and not prone to falling off, while also being easy to disassemble.

[0038] Preferably, the mounting plate 20 and the door body 10 are an integral structure. Both the mounting plate 20 and the door body 10 are made of plastic and are integrally injection molded. The connection between the mounting plate 20 and the door body 10 is stepped to prevent deformation of the plastic parts due to excessive wall thickness during injection molding.

[0039] Of course, as another embodiment of the present invention, the mounting plate 20 and the door body 10 can also be an assembled structure. The mounting plate 20 is a separate part from the door body 10. The mounting plate 20 can be welded to the door body 10 or fixed to the door body 10 by screws.

[0040] Figure 3 The specific structure of the mounting plate 20 is shown.

[0041] like Figure 3 As shown, the mounting plate 20 has a first surface 21 and a second surface 22 along the mounting direction of the rotating shaft 30 and perpendicular to the axial direction of the rotating shaft 30, a stop portion 23 provided on the first surface 21, and a through hole 24 for the rotating shaft 30 to pass through.

[0042] The stop portion 23 protrudes from the first surface 21 and has a limiting surface 231 parallel to the first surface 21, a first side surface 232 in contact with the first surface 21, and a second side surface 233 in contact with the first surface 21.

[0043] Preferably, the first side surface 232 is a smoothly transitioned inclined surface. This structural design facilitates the rotation of the shaft 30 on the mounting plate 20.

[0044] Preferably, the angle between the second side 233 and the first side 21 is less than or equal to 90 degrees. With this structural design, the rotating shaft 30 can be securely fastened to the mounting plate 20.

[0045] Figure 4 The specific structure of the rotating shaft 30 is shown.

[0046] like Figure 4 As shown, the rotating shaft 30 has a shaft body 31, and protruding arms 32, limiting arms 33 and stop arms 34 disposed on different parts of the shaft body 31.

[0047] Preferably, the shaft 30 is made of plastic, and the shaft body 31 is a hollow solid. This structural design ensures the strength of the shaft 30 while preventing deformation of the injection molded part due to excessive wall thickness during the molding process, which would prevent the shaft 30 from being installed smoothly.

[0048] Preferably, the end of the shaft body 31 is hemispherical, which facilitates the installation of the rotating shaft 30 and reduces the friction during the use of the door assembly 100, thereby making the use of the door assembly 100 smoother.

[0049] The protruding arm 32 is located at a lower position on the upper end of the shaft body 31 and is formed by the radial extension of the shaft body 31.

[0050] The structure of the through hole 24 is adapted to the structure of the shaft body 31 and the protruding arm 32. The through hole has a shaft hole 241 through which the shaft body 31 passes, and a relief hole 242 through which the protruding arm 32 passes. The shaft hole 241 and the relief hole 242 are connected.

[0051] During installation, the protruding arm 32 passes through the clearance hole 242 from above the first surface 21 and is installed below the second surface 22. After rotation, it abuts against the second surface 22, thereby restricting the axial movement of the rotating shaft 30.

[0052] The limiting arm 33 is disposed at the upper end of the shaft body 31, and its upper surface is on the same plane as the upper surface of the end of the shaft body 31. The limiting arm 33 has an arm body 331 in the shape of a right-angle bracket connected to the shaft body 31 and a protrusion 332 protruding from the end of the arm body 331. The protrusion 332 is generally wider at the top and narrower at the bottom.

[0053] When the rotating shaft 30 is rotated relative to the mounting plate 20, the limiting arm 33 is located between the first side surface 232 and the wall surface of the door body 10, and simultaneously above the first side surface 21. The limiting arm 33 cooperates with the stop part 23, and the protrusion 332 rotates and slides from the first side surface 232 of the stop part 23 to the limiting surface 231, and after passing through the limiting surface 231, it is locked on the second side surface 233, thereby restricting the rotation of the rotating shaft 30. The lower surface of the arm body 331 of the limiting arm 33 abuts against the limiting surface 231. The arm body 331 and the protruding arm 32 cooperate to jointly restrict the vertical movement of the rotating shaft 30.

[0054] The stop arm 34 is formed by the shaft body 31 protruding from the side wall, and its upper surface is on the same plane as the shaft body 31. The stop arm 34 is at the same height as the limiting arm 33 and is deflected at a certain angle relative to the limiting arm 33 along the axis of the rotating shaft 30.

[0055] When the rotating shaft 30 is rotated relative to the mounting plate 20, the stop arm 34 is located between the second side 233 and the wall of the door body 10, and above the first side 21, but not in contact with the first side 21. After rotation, the stop arm 34 abuts against the wall of the door body 10. The stop arm 34 and the limiting arm 33 cooperate to hold the rotating shaft 30 between the mounting plate 20 and the door body 10, thereby jointly restricting the axial rotation of the rotating shaft 30.

[0056] This structural design is simple and easy to install, effectively limiting the vertical movement and rotation of the shaft 30 along the axial direction, thus ensuring that the shaft 30 is securely mounted on the mounting plate 20.

[0057] Figures 5 to 7 A second embodiment of the invention is shown.

[0058] The second implementation differs from the first implementation in that the positioning structure between the mounting plate 20 and the rotating shaft 30 is different. Other structural designs and installation methods are the same as those in the first implementation, and will not be described in detail here.

[0059] like Figure 6 As shown, the stop portion 23 of the mounting plate 20 is disposed on the second surface 22 of the mounting plate 20. The stop portion 23 has a first side surface 232 and a second side surface 233. Both the first side surface 232 and the second side surface 233 are in contact with the second surface 22. The first side surface 232 is a smoothly transitioned curved surface.

[0060] like Figure 7 As shown, the rotating shaft 30 has protruding arms 32 and stop arms 34 provided at different parts of the shaft body 31.

[0061] The protruding arm 32 is positioned slightly below the upper end of the shaft body 31, extending radially from the shaft body 31. When the rotating shaft 30 is installed from top to bottom, the protruding arm 32 passes through the clearance hole 242 from above the first surface 21 and is installed below the second surface 22. At this time, the protruding arm 32 is located between the wall surface of the door body 10 and the first side surface 232. When the rotating shaft 30 is rotated relative to the mounting plate 20, the protruding arm 32 slides on the first side surface 232 and finally its side surface abuts against the second side surface 233. At the same time, the upper surface of the protruding arm 32 abuts against the second surface 22, thereby restricting the axial movement and rotation of the rotating shaft 30.

[0062] A stop arm 34 is disposed at the upper end of the shaft body 31 and protrudes from the side wall of the shaft body 31. The upper surface of the stop arm 34 and the upper surface of the shaft body 31 are in the same plane. The stop arm 34 is located above the protruding arm 32 and is spaced apart from the protruding arm 32 along the axial direction of the rotating shaft 30. At the same time, the stop arm 34 is deflected at a certain angle relative to the protruding arm 32 along the axial direction of the rotating shaft 30.

[0063] When the rotating shaft 30 is rotated relative to the mounting plate 20, the stop arm 34 is located between the second side 233 and the wall of the door body 10. Simultaneously, the stop arm 34 is positioned above and abuts against the first side 21, thus cooperating with the protruding arm 32 to restrict the vertical movement of the rotating shaft 30. After rotation, the stop arm 34 ultimately abuts against the wall of the door body 10, cooperating with the protruding arm 32 to hold the rotating shaft 30 between the mounting plate 20 and the door body 10, thereby restricting the axial rotation of the rotating shaft 30.

[0064] This design is simple in structure and easy to install. It can effectively limit the vertical movement and rotation of the pivot 30 along the axial direction, thereby enabling simple and quick installation of the door.

[0065] Figure 8 A preferred integral structure of the door assembly 100 is shown.

[0066] like Figure 8 As shown, the door 10 has a front wall 11, and four side walls extend vertically from the front wall 11 in the same direction, including a first side wall 12, a second side wall 13, a third side wall 14, and a fourth side wall 15.

[0067] A mounting plate 20 is formed at the corner of the front wall 11 and the third side wall 14. The mounting plate 20 is perpendicular to the front wall 11 and the third side wall 14. The mounting plate 20 is located near and slightly above the second side wall 13. A clearance hole 16 is provided on the second side wall 13 for the rotating shaft 30 to pass through.

[0068] A columnar fixed pivot 17 is formed on the upper surface of the first side wall 12 of the door body 10. The fixed pivot 17 and the pivot 30 are located on the same axis.

[0069] The overall structure of the door assembly 100 can also include two mounting plates 20 formed simultaneously at the corner of the front wall 11 and the third side wall 14, with the shaft holes 241 of the two mounting plates 20 on the same axis. One mounting plate 20 is positioned near the second side wall 13 and slightly above it. The other mounting plate 20 is positioned near the first side wall 12 and slightly below it. Corresponding clearance holes 16 for the rotating shaft 30 to pass through are respectively opened on the first side wall 12 and the second side wall 13.

[0070] This structural design results in a simple overall structure, convenient installation, and stable installation of the door 10. It is quick, easy, and not prone to falling off, while also being easy to disassemble.

[0071] Figure 9 A refrigeration device 200 is shown.

[0072] like Figure 9 As shown, the refrigeration equipment 200 has a housing 210, a bushing 220, and the aforementioned door assembly 100.

[0073] The housing 210 includes an inner liner 211, an outer shell, and a foam layer (the outer shell and foam layer are not shown in the figure). The inner liner 211 has a pre-embedded hole 212 for accommodating a bushing 220. The bushing 220 can be inserted into the pre-embedded hole 212 and thus be secured to the inner liner 211.

[0074] The foam layer is made of polyurethane foam that is foamed on-site. Rigid polyurethane foam not only has good thermal insulation properties, but also, due to the direct injection foaming process, the inner liner 211, the outer shell and the foam layer are firmly bonded together, thereby stably fixing the bushing 220 to the box 210.

[0075] The bushing 220 is made of plastic and has a receiving cavity 221, a baffle 222 and a flexible retaining fin 223.

[0076] The receiving cavity 221 is cylindrical in shape, with a cylindrical cavity 224 in the middle. One end of the cavity 224 is connected to the outside, and the other end is closed. The size of the cavity 224 is adapted to the size of the rotating shaft 30 to accommodate the rotating shaft 30. The rotating shaft 30 can be inserted into the cavity 224 and rotate axially.

[0077] The baffle 222 is a square plate structure, but it can also be other polygonal shapes, such as pentagons. The baffle 222 can be placed into the pre-embedded hole 212 for limiting the bushing 220.

[0078] There are two elastic retaining wings 223, symmetrically arranged on the receiving cavity 221. The elastic retaining wings 223 have a certain degree of elasticity and can extend and retract. When inserted into the pre-embedded hole 212, the elastic retaining wings 223 are in a retracted state. After being inserted into the pre-embedded hole 212, the elastic retaining wings 223 extend to their natural state, with their ends abutting against the inner liner 211, thereby fixing the bushing 220 to the inner liner 211 and restricting the movement of the bushing 220.

[0079] To match the shape of the bushing 220, the pre-embedded hole 212 is a stepped through hole, including a first step 2121 and a second step 2122.

[0080] The first step 2121 and the baffle 222 are adapted in shape and size, with the baffle 222 embedded within the first step 2121. This arrangement not only restricts the axial rotation of the bushing 220 but also seals the pre-embedded hole 212, preventing water and other substances from seeping into the foam layer. Simultaneously, this arrangement prevents the bushing 220 from protruding from the surface of the inner liner 211, thus avoiding interference with the door assembly 100.

[0081] The second step 2122 is adapted to the dimensions of the receiving cavity 221 and the retracted elastic fin 223 for insertion into the receiving cavity 221 and the retracted elastic fin 223.

[0082] This structural design makes installation simple, allowing the door assembly 100 to be quickly installed onto the refrigeration equipment 200. The structure is stable, not easy to fall off, and provides a good user experience. Even after long-term use, the disassembly of the door assembly 100 is still simple and convenient.

[0083] As a further optimization of the present invention, a door locking structure 300 is provided between the door 10 and the housing 210, which can lock the door 10 when it is closed and is easy to unlock.

[0084] Figures 11 to 13 The door locking structure 300 is shown.

[0085] like Figure 11 As shown, the door locking structure 300 includes a handle 310, a handle groove 320, an assembly groove 330, and an elastic element 340 disposed on the door body, and a buckle base 350, a base groove 360, a hanging column 370, and a screw 380 disposed on the housing 210.

[0086] The handle groove 320 is located on the front wall 11 of the door body 10. It is a sloping recessed groove that allows the hand to easily reach in and pull the handle 310.

[0087] The assembly groove 330 is provided on the fourth side wall 15 of the door body 10, and the junction of the assembly groove 330 and the handle groove 320 forms an assembly wall 331.

[0088] The mounting wall 331 has a first mounting surface 332 facing the same direction as the mounting groove 330, and a second mounting surface 333 facing the same direction as the handle groove 320.

[0089] Two ear-shaped bearing seats 334 are symmetrically provided on the first assembly surface 332. The bearing seats 334 are provided with shaft holes 335 for installing elastic elements 340.

[0090] The second mounting surface 333 is located below the handle 310 and serves as a limit for the rotation of the handle 310 when it is not in use.

[0091] The handle 310 has a first plate 311 and a second plate 312 arranged perpendicularly to each other. A mounting base 313 for connecting the elastic member 340 is provided at the junction of the first plate 311 and the second plate 312. The mounting base 313 is provided with a mounting hole 314.

[0092] The elastic element 340 includes an elastic body 341. The elastic body 341 includes a pivot shaft 342, an elastic surface 343, a non-elastic surface 344, and an elastic fin 346.

[0093] The non-elastic surface 344 is provided with a first buckle 345, which can cooperate with the buckle base 350 to lock the door 10.

[0094] The elastic fin 346 extends from the end of the elastic member 340 by bending, and is located on the same side as the elastic surface 343, forming an acute angle with the elastic surface 343. The elastic fin 346 has a certain degree of elasticity and can extend and retract. After installation, the elastic fin 346 can rest against the first mounting surface 332.

[0095] Pivot shafts 342 are provided at both ends of elastic member 340 and are used to pivotally connect elastic member 340 in assembly groove 330.

[0096] During installation, first insert the pivot shaft 342 of the elastic element 340 into the mounting hole 313 of the handle 310, and then insert the pivot shaft 342 into the shaft hole 335 on the bearing seat 334. At this time, the elastic fin 346 can abut against the first mounting surface 332. The second plate 312 of the handle 310 abuts against the non-elastic surface 344 of the elastic element 340. The first plate 311 of the handle 310 abuts against the second mounting surface 333.

[0097] This structural design allows the handle 310 and the elastic element 340 to be pivotally installed into the mounting slot 330 and the handle slot 320 simultaneously, while ensuring that the handle 310 can rotate relative to the elastic element 340. The structure is simple and easy to install.

[0098] The base groove 360 ​​is a square recessed groove on the housing 210, used to accommodate the snap-on base 350. The bottom of the base groove 360 ​​is also provided with a square mounting hole 361 for installing the hanging column 370.

[0099] The lifting column 370 has a supporting part 371, a circular plate-shaped stop part 372, and a threaded hole 373 located at the center of the lifting column 370.

[0100] The main body of the supporting part 371 is a columnar body 3711. Two plates 3712 with a certain thickness extend radially symmetrically from the curved surface of the columnar body 3711. The ends of the columnar body 3711 are connected to the stop part 372, and there is a certain distance between the ends of the plates 3712 and the stop part 372.

[0101] During installation, the supporting part 371 is inserted into the assembly hole 361 from the inside of the housing 210, and the hanging column 370 is rotated. The plate 3712 and the stop part 372 abut against the outer wall and inner wall of the inner liner respectively, thereby fixing the hanging column 370 to the housing 210.

[0102] The snap-fit ​​base 350 has a base body 351, a second snap-fit ​​352, and a stepped hole 353. The base body 351 is square. The stepped hole 353 is located in the center of the base body 351 for receiving a screw 380.

[0103] During installation, first install the snap-fit ​​base 350 into the base groove 360, then insert the screw 380 into the stepped hole 353, and then screw the screw 380 into the threaded hole 373 of the hanging column 370, thereby installing the snap-fit ​​base 350 on the housing 210.

[0104] Screw 380 may also be fitted with screw cap 381. Screw cap 381 can be fastened to the end of screw 380 to prevent screw 380 from being exposed.

[0105] The second latch 352 protrudes from the base body 351 and has a sliding surface 354 and a locking surface 355. Both the sliding surface 354 and the locking surface 355 are inclined planes, and the inclination of the locking surface 355 is higher than that of the sliding surface 354. The second latch 352 can cooperate and interlock with the first latch 345 on the elastic member 340.

[0106] When the door is closed, the first latch 345 passes through the sliding surface 354, causing the elastic fin 346 to undergo elastic deformation and compress inward. After the first latch 345 is engaged with the locking surface 355, the elastic fin 346 returns to its natural state, so that the first latch 345 and the second latch 352 are tightly locked together, thereby achieving a secure lock on the box 210 when the door 10 is closed.

[0107] When opening the door, the hand reaches into the handle groove 320 and pulls the first plate 311 outward, causing the second plate 312 to press the non-elastic surface 344 of the elastic element 340, thereby causing the elastic wing plate 346 to undergo elastic deformation and compress inward, thereby causing the first buckle 345 to disengage from the locking surface 355, thus releasing the locked state of the door 10 and opening the door 10.

[0108] This structural design allows the door to be easily locked onto the cabinet, preventing damage to the items inside from improper closure. It is also simple and convenient to use, and easy to install and disassemble.

[0109] In summary, the technical solution provided by this invention can solve the problems of complex door installation structures, difficulty in installation, unstable installation, and difficulty in disassembly in the prior art. The technical solution provided by this invention has a simple overall structure, is easy to install, and can achieve stable, quick, and easy door installation without easily falling off, while also being easy to disassemble. Furthermore, this invention also involves a locking structure for the door, which can securely lock the door to the box when closed, preventing damage to the items stored inside.

[0110] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0111] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A door assembly, comprising a door body, characterized in that, It also includes a mounting plate vertically disposed on the door body and a detachable rotating shaft mounted on the mounting plate. The mounting plate has a through hole for the rotating shaft to pass through. The mounting plate and the rotating shaft are also provided with positioning structures for rotational positioning of both. The mounting plate has a first surface and a second surface along the mounting direction of the rotating shaft. The rotating shaft has a shaft body, from which a protruding arm extends radially. The through hole includes a shaft hole for the shaft body to pass through and a clearance hole for the protruding arm to pass through. The clearance hole and the shaft hole are connected. The protruding arm passes through the clearance hole from the first surface and, after rotation, abuts against the second surface. A limiting structure is also provided between the mounting plate and the rotating shaft to limit the rotation of the rotating shaft. Simultaneously, the limiting structure cooperates with the protruding arm to limit the axial movement of the rotating shaft. The limiting structure includes: A stop portion protrudes from the first surface of the mounting plate. The stop portion has a limiting surface facing the same direction as the first surface and a first side surface and a second side surface that are in contact with the first surface. A limiting arm, which cooperates with the stop portion, is provided on the shaft body at intervals along the axial direction of the rotating shaft, and the limiting arm has an arm body connected to the shaft body and a protrusion extending out of the arm body. The stop arm extends from the side wall of the shaft body. The stop arm and the limiting arm are deflected at a certain angle along the axis of the rotating shaft. After the rotating shaft rotates relative to the mounting plate, the arm body abuts against the limiting surface, and the protrusion rotates from abutting against the first side to abutting against the second side. The stop arm abuts against the door body.

2. The door assembly as described in claim 1, characterized in that, The limiting structure includes: A stop portion protrudes from the second surface of the mounting plate, the stop portion having a first side surface and a second side surface in contact with the second surface; The stop arm extends from the side wall of the shaft body. The stop arm and the protruding arm are spaced a certain distance apart along the axis of the rotating shaft and deflected at a certain angle. After the rotating shaft rotates relative to the mounting plate, the protruding arm rotates from the first side to abut against the second side. The stop arm abuts against the first side and the door body.

3. The door assembly as described in claim 2, characterized in that, The first side is a smoothly transitioned inclined surface, and the angle between the second side and the mounting plate is less than or equal to 90 degrees.

4. The door assembly as described in claim 1, characterized in that, The mounting plate and the pivot are provided at both ends of the door.

5. The door assembly as described in claim 1, characterized in that, One end of the door body is provided with the mounting plate and the pivot, and the other end of the door body is fixedly provided with a fixed pivot, the fixed pivot and the pivot are located on the same axis.

6. A refrigeration device, comprising a housing, characterized in that, The refrigeration equipment further includes a door assembly as described in any one of claims 1-5, the door assembly being pivotally mounted on the housing.

7. The refrigeration equipment as described in claim 6, characterized in that, The refrigeration equipment has a bushing for accommodating the rotating shaft, and the housing has a pre-embedded hole for accommodating the bushing. The bushing is fixed to the housing by a housing foaming process.

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