Door body assembly and refrigeration apparatus

Abstract

A door body assembly (02) and a refrigeration apparatus. The door body assembly (02) is applied to the refrigeration apparatus, and the refrigeration apparatus comprises a box body (01). The door body assembly (02) comprises a main door (11) and an auxiliary door (12), wherein the main door (11) is rotationally arranged on the box body (01); the auxiliary door (12) is rotationally arranged on the main door (11) by means of an auxiliary door hinge; and the auxiliary door hinge comprises an auxiliary door hinge shaft (31) arranged on the auxiliary door (12), the auxiliary door hinge shaft (31) being movably arranged on the auxiliary door (12).

Description

Door assemblies and refrigeration equipment

[0001] This application is based on Chinese patent application number 202311161602.0, filed on September 8, 2023, and Chinese patent application number 202311161571.9, filed on September 8, 2023, and claims the priority of the Chinese patent application. The entire contents of the Chinese patent application are hereby incorporated into this application as a reference. Technical Field

[0002] The present application relates to the technical field of household appliances, for example, to a door assembly and a refrigeration device. Background Art

[0003] As living standards improve, users' demands for refrigerator storage, energy efficiency, and freshness are also increasing. Currently, most refrigerators on the market have single or double doors, which have limited capacity. When the door is open, a large amount of cold air is lost, resulting in lower efficiency. This is why the door-in-door refrigerator emerged.

[0004] In the related art, a door-in-door refrigerator is provided with a door lock on the secondary door, which is used to lock the secondary door to the main door so that the secondary door can move together with the main door to prevent the secondary door from being opened when the user opens the main door.

[0005] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0006] Most of the existing door-in-door refrigerators with a door lock on the secondary door are equipped with a separate door lock on the door body to lock the secondary door, which increases the thickness of the door body and reduces the user experience.

[0007] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field.

[0008] Summary of the Invention

[0009] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0010] The embodiments of the present disclosure provide a door body assembly and a refrigeration device, which can lock the auxiliary door to the main door without providing a separate door lock on the door body, thereby reducing the thickness of the door body and improving the user experience.

[0011] The present disclosure provides a door assembly for use in a refrigeration appliance, the refrigeration appliance including a cabinet. The door assembly includes a main door and a secondary door, wherein the main door is rotatably mounted on the cabinet; the secondary door is rotatably mounted on the main door via a secondary door hinge, the secondary door hinge including a secondary door hinge shaft having an abutment portion, and the secondary door hinge shaft is movably mounted on the secondary door.

[0012] In some embodiments, the door body assembly also includes a lifting plate and a locking device, wherein the lifting plate is connected to the main door through a linkage mechanism, and includes an edge provided with an ascending portion and a descending portion, and the edge of the lifting plate is located below the abutting portion and abuts with the abutting portion; the locking device is provided on the auxiliary door, and the locking device is used to lock the auxiliary door and the auxiliary door hinge shaft; wherein, when the main door is closed, the ascending portion of the lifting plate can lift the auxiliary door hinge shaft, and when the main door is rotated to open, the descending portion of the lifting plate moves to the abutting portion so that the auxiliary door hinge shaft can fall, and, when the auxiliary door hinge shaft falls to the locking position, the locking device can be triggered to lock the auxiliary door and the auxiliary door hinge shaft.

[0013] In some embodiments, the locking portion further comprises a clamp assembly, comprising a first clamp and a second clamp rotatably mounted on the auxiliary door, with the first clamp and the second clamp being disposed oppositely on either side of the auxiliary door hinge shaft. When the auxiliary door hinge shaft descends to the locked position, the auxiliary door hinge shaft pushes the first clamp and the second clamp to rotate toward the auxiliary door hinge shaft, thereby clamping the auxiliary door hinge shaft.

[0014] An embodiment of the present disclosure provides a refrigeration device, which includes a cabinet and the above-mentioned door assembly.

[0015] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements. The drawings do not constitute a scale limitation. In addition,

[0017] FIG1 is a schematic structural diagram of a refrigeration device provided by an embodiment of the present disclosure;

[0018] FIG2 is a schematic structural diagram of a door assembly provided by an embodiment of the present disclosure;

[0019] FIG3 is a partial structural diagram of a door assembly provided by an embodiment of the present disclosure, wherein the main door is in a closed state and the hinge axis of the auxiliary door is in an unlocked position;

[0020] FIG4 is a schematic structural diagram of a main door hinge and a secondary door hinge provided by an embodiment of the present disclosure, wherein the main door is in an open state and the secondary door hinge shaft is in a locked position;

[0021] FIG5 is a schematic structural diagram of a lifting plate and a secondary door hinge shaft provided in an embodiment of the present disclosure, wherein the main door is in a closed state and the secondary door hinge shaft is in an unlocked position;

[0022] FIG6 is a schematic structural diagram of a secondary door hinge shaft provided by an embodiment of the present disclosure;

[0023] FIG7 is a schematic structural diagram of a lifting plate provided in an embodiment of the present disclosure;

[0024] FIG8 is a schematic structural diagram of a clamping assembly provided in an embodiment of the present disclosure;

[0025] FIG9 is a schematic structural diagram of a clamp assembly releasing a secondary door hinge shaft according to an embodiment of the present disclosure;

[0026] FIG10 is a schematic structural diagram of a clamping assembly clamping a secondary door hinge shaft provided by an embodiment of the present disclosure.

[0027] Reference numerals: 01: housing; 02: door assembly; 11: main door; 12: auxiliary door; 13: locking device; 14: linkage mechanism; 20: main door hinge plate; 21: main door hinge shaft; 30: auxiliary door hinge plate; 31: auxiliary door hinge shaft; 32: abutment portion; 321: first limiting rib; 322: second limiting rib; 33: stop surface; 34: roller; 40: lifting plate; 41: edge; 411: ascending portion; 412: descending portion; 42: mounting hole; 50: clamp assembly; 51: first clamp; 511: first rotating portion; 512: first clamping portion; 513: first rotating shaft; 52: second clamp; 521: second rotating portion; 522: second clamping portion; 523: second rotating shaft; 60: elastic element; 71: first gear; 72: second gear; 721: connecting column. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] The reference to any related art in the specification is not and should not be taken as an admission or any form of suggestion that the related art forms part of the common general knowledge in the application area or any other jurisdiction, or that the related art can be reasonably understood and regarded as relevant by a person skilled in the art.

[0030] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0031] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0032] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0033] Unless otherwise stated, the term "plurality" means two or more.

[0034] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0037] As shown in Figures 1 to 10, the embodiment of the present disclosure provides a door body assembly 02 and a refrigeration device, which can lock the secondary door 12 to the main door 11 without providing a separate door lock on the door body, thereby reducing the thickness of the door body and improving the user experience.

[0038] As shown in FIG. 1 to FIG. 10 , an embodiment of the present disclosure provides a door assembly 02 applied to a refrigeration device. The refrigeration device includes a box body 01 , and the door assembly 02 is openably and closably arranged on the box body 01 .

[0039] Exemplarily, the refrigeration equipment may be a refrigerator, a freezer, a display cabinet, a cold storage cabinet, etc. The refrigeration equipment has a box body 01 and an openable door assembly 02.

[0040] The door assembly includes a main door 11 and a sub-door 12 , and the sub-door 12 is arranged on the main door 11 in an openable and closable manner.

[0041] Specifically, the main door is openably mounted on the box body, and the secondary door is pivotally mounted on the main door via a secondary door hinge. In some use cases, the main door and secondary door correspond to the same storage space, making opening the secondary door more convenient and labor-saving. In other use cases, an independent storage area is defined within the main door, and opening the secondary door allows access to the independent storage area.

[0042] To prevent the secondary door from being accidentally opened when the main door is opened, or vice versa, the secondary door hinge shaft is configured to be movable along its own axis between a first position and a second position. With the main door and secondary door's rotation axes arranged vertically, the secondary door hinge shaft can move up and down. Because the secondary door hinge shaft is movable up and down, its first position serves as a locked position, and its second position as an unlocked position. In the locked position, the secondary door hinge shaft cannot rotate, preventing the secondary door from being opened. In the unlocked position, the secondary door hinge shaft can rotate, allowing the secondary door to be opened.

[0043] With the door assembly provided by the disclosed embodiment, the auxiliary door hinge shaft is locked or unlocked by moving up and down, and the moving part moves along the height of the auxiliary door, allowing the auxiliary door to be designed with a smaller thickness. This improves the aesthetics of the refrigeration equipment and reduces the cost of the refrigeration equipment.

[0044] Exemplarily, as a method of locking or unlocking the auxiliary door by lifting and lowering the auxiliary door hinge shaft, the locking part includes a driving structure, which is connected to the main door and the auxiliary door hinge shaft. The auxiliary door hinge shaft is driven to rise and fall by the driving structure when the main door is opened and closed; wherein, when the main door is opened, the auxiliary door hinge shaft descends from the second position to the first position, and when the main door is closed, the auxiliary door hinge rises from the first position to the second position.

[0045] The auxiliary door's hinge shaft is raised and lowered by a drive mechanism. The drive mechanism's input is driven by the rotation of the main door, and its output is used to drive the auxiliary door's hinge shaft up and down. This allows the drive mechanism to move the auxiliary door's hinge shaft to a locked position during the main door's opening, preventing the auxiliary door from accidentally opening while the main door is open. When the main door is closed, the drive mechanism moves the auxiliary door's hinge shaft to an unlocked position, allowing the auxiliary door to open.

[0046] Furthermore, the first position of the auxiliary door hinge shaft is lower than the second position. That is, when both the main door and the auxiliary door are closed, the auxiliary door hinge shaft is in the second, higher position. When the main door is opened, the auxiliary door hinge shaft moves downward and is locked. This reduces the additional space required for the auxiliary door hinge shaft to move in the height direction.

[0047] With this setup, the secondary door hinge shaft rises and falls based on the main door's opening and closing, and the secondary door hinge shaft is automatically locked and unlocked based on the main door's rising and falling state. This purely mechanical approach ensures reliable locking and unlocking of the secondary door at a low cost.

[0048] Optionally, the auxiliary door hinge shaft includes an abutment portion; the door body assembly includes a linkage mechanism 14 and a lifting plate 40. The lifting plate is connected to the main door through the linkage mechanism 14, and includes an edge provided with an ascending portion and a descending portion. The edge of the lifting plate is located below the abutment portion and abuts against the abutment portion. When the main door is closed, the ascending portion of the lifting plate can lift the auxiliary door hinge shaft. When the main door is rotated to open, the descending portion of the lifting plate moves to the abutment portion to allow the auxiliary door hinge shaft to fall. Moreover, when the auxiliary door hinge shaft falls to the locked position, the locking device 13 can be triggered to lock the auxiliary door and the auxiliary door hinge shaft.

[0049] The door assembly 02 includes a main door 11, a secondary door 12, a lifting plate 40, and a locking device 13. The main door 11 is rotatably mounted on the housing 01. The secondary door 12 is rotatably mounted on the main door 11 via a secondary door hinge. The secondary door hinge includes a secondary door hinge shaft 31 provided with an abutment portion 32, and the secondary door hinge shaft 31 is movably mounted on the secondary door 12. The lifting plate 40 is connected to the main door 11 via a linkage mechanism 14, and includes an edge 41 provided with an ascending portion 411 and a descending portion 412. The edge 41 of the lifting plate 40 is located below the abutment portion 32 and abuts against the abutment portion 32. The locking device 13 is provided on the secondary door 12 for locking the secondary door 12 and the secondary door hinge shaft 31. Among them, when the main door 11 is closed, the ascending part 411 of the lifting plate 40 can lift the auxiliary door hinge shaft 31, and when the main door 11 is rotated to open, the descending part 412 of the lifting plate 40 moves to the abutment part 32 so that the auxiliary door hinge shaft 31 can fall, and when the auxiliary door hinge shaft 31 falls to the locking position, the locking device 13 can be triggered to lock the auxiliary door 12 and the auxiliary door hinge shaft 31.

[0050] Specifically, the housing 01 is provided with a storage cavity, and the main door 11 can rotate to open or close the storage cavity of the housing 01. The secondary door hinge also includes a secondary door hinge plate 30, which is fixed to the main door 11. The secondary door hinge shaft 31 is movably connected to the secondary door hinge plate 30, allowing the secondary door hinge shaft 31 to rise or fall relative to the secondary door hinge plate 30. The secondary door hinge shaft 31 is also provided with a limit structure that limits the secondary door hinge shaft 31 to prevent rotation relative to the secondary door hinge plate 30. The edge 41 of the lifting plate 40 extends upward, with the higher portion of the edge 41 forming an ascending portion 411 and the lower portion of the edge 41 forming a descending portion 412. The abutment portion 32 of the secondary door hinge shaft 31 is disposed above the edge 41 of the lifting portion and can abut against either the ascending portion 411 or the descending portion 412, as shown in Figure 5. The locking device 13 is fixedly arranged at a position corresponding to the auxiliary door 12 and the auxiliary door hinge shaft 31. When the auxiliary door hinge shaft 31 falls to the locking position, the locking device 13 can lock the auxiliary door 12 to the auxiliary door hinge shaft 31, thereby preventing the auxiliary door 12 from rotating relative to the main door 11.

[0051] As shown in Figure 9, when the main door 11 closes the storage chamber, the abutment portion 32 abuts the raised portion 411. At this point, the raised portion 411 lifts the auxiliary door hinge shaft 31 via the abutment portion 32, preventing the auxiliary door hinge shaft 31 from triggering the locking device 13. This unlocks the auxiliary door 12 from the main door 11, allowing the user to rotate the auxiliary door 12.

[0052] As shown in Figure 10, when the main door 11 is rotated to open the storage chamber, the main door 11 can drive the lifting plate 40 to rotate synchronously through the linkage mechanism 14. At this time, the descending portion 412 rotates to a position corresponding to the abutment portion 32, and the auxiliary door hinge shaft 31 can fall freely under the action of gravity. After the main door 11 rotates a preset angle, the auxiliary door hinge shaft 31 falls to the locked position. At this time, the auxiliary door hinge shaft 31 can trigger the locking device 13, which locks the auxiliary door hinge shaft 31 to prevent the auxiliary door 12 from rotating relative to the main door 11.

[0053] In the above embodiment, the height of the edge 41 of the lifting plate 40 refers to the distance from the upper end surface of the edge 41 to the lower end surface of the lifting plate 40 .

[0054] As shown in FIG. 7 , optionally, the lifting plate 40 is a semi-circular plate structure, and such a configuration can reduce the size of the lifting plate 40 .

[0055] As shown in Figures 2 to 4, in some embodiments, the main door 11 is hinged to the housing 01 via the main door 11 hinge, and the main door 11 hinge includes a main door hinge shaft 21. The linkage mechanism 14 includes a first gear 71 and a second gear 72. The first gear 71 is fixedly mounted on the main door hinge shaft 21. The second gear 72 is rotatably mounted on the main door 11 and meshes with the first gear 71. The lifting plate 40 is in transmission connection with the second gear 72. When the main door 11 rotates about the main door 11 hinge, the first gear 71 drives the second gear 72 to rotate, thereby driving the lifting plate 40 to rotate.

[0056] Specifically, the hinge of main door 11 includes a main door hinge plate 20 fixed to housing 01 and a main door hinge shaft 21. Main door 11 can rotate about main door hinge shaft 21. A first gear 71 is mounted on main door hinge shaft 21 and is coaxial with main door hinge shaft 21. A second gear 72 is provided with a rotating shaft on the side facing main door 11. Second gear 72 is rotatably mounted on main door 11 via the rotating shaft and meshes with first gear 71.

[0057] When the main door 11 rotates around the main door hinge shaft 21, the second gear 72 rotates around the first gear 71. At this time, the first gear 71 can drive the second gear 72 to rotate circumferentially, thereby driving the lifting plate 40 to rotate synchronously.

[0058] As shown in Figures 4 and 5, in some embodiments, a connecting column 721 is provided on the side of the second gear 72 facing the lifting plate 40, and the connecting column 721 is provided with a limiting structure. A mounting hole 42 is provided at the center of the lifting plate 40. The connecting column 721 can be inserted into the mounting hole 42, and the limiting structure can fix the second gear 72 and the lifting plate 40 to each other.

[0059] Specifically, the connecting column 721 is disposed on the side of the second gear 72 facing the lifting plate 40, and the connecting column 721 is coaxial with the second gear 72. The lifting plate 40 has a mounting hole 42 at its center, and the shape of the mounting hole 42 corresponds to the connecting column 721. The connecting column 721 can be inserted into the mounting hole 42 to mount the lifting plate 40 to the second gear 72. In this case, the lifting plate 40 and the second gear 72 are concentric.

[0060] As shown in FIG3 and FIG4 , in some practical applications, the lifting plate 40 is located above the second gear 72 , the connecting column 721 is provided on the upper end surface of the second gear 72 , and the rotating shaft is provided on the lower end surface of the second gear 72 .

[0061] As shown in FIG. 5 and FIG. 7 , in some embodiments, the end of the connecting column 721 inserted into the mounting hole 42 is a special-shaped structure, and the mounting hole 42 is a special-shaped hole corresponding to the shape of the end of the connecting column 721 .

[0062] Specifically, the end of the connecting column 721 inserted into the mounting hole 42 is a special-shaped structure to form a limit portion. After the connecting column 721 is inserted into the mounting hole 42, the special-shaped structure can limit the special-shaped hole to prevent the lifting plate 40 from rotating relative to the second gear 72.

[0063] In some practical applications, the cross-section of the end of the connecting column 721 is rectangular, and the structure of the mounting hole 42 is also a corresponding rectangle.

[0064] In some other practical applications, the cross-section of the end of the connecting column 721 is triangular, and the structure of the mounting hole 42 is also a corresponding triangle.

[0065] As shown in FIG5 and FIG6 , in some embodiments, the abutting portion 32 includes a roller 34 . The roller 34 abuts against the upper end surface of the edge 41 of the lifting plate 40 .

[0066] Specifically, the roller 34 abuts against the edge 41 of the lifting plate 40 and can roll along the edge 41 of the lifting plate 40. When the lifting plate 40 rotates, the roller 34 rolls between the ascending portion 411 and the descending portion 412 relative to the lifting plate 40, thereby causing the auxiliary door hinge shaft 31 to rise or fall. This arrangement reduces friction between the abutting portion 32 and the edge 41 of the lifting plate 40, preventing the auxiliary door hinge shaft 31 from rotating relative to the auxiliary door hinge plate 30 while also reducing wear on the abutting portion 32 and the edge 41 of the lifting plate 40.

[0067] As shown in Figures 5 and 6, in some embodiments, a first limiting rib 321 and a second limiting rib 322 are provided on the side of the abutting portion 32 facing the lifting plate 40. The first limiting rib 321 and the second limiting rib 322 are provided on opposite sides of the edge 41 of the lifting plate 40, and the height of the edge 41 of the lifting plate 40 is higher than the height of the first limiting rib 321 and the second limiting rib 322.

[0068] Specifically, the abutment portion 32 is provided with a first limiting rib 321 and a second limiting rib 322 corresponding to the edge 41 of the lifting plate 40. The first limiting rib 321 is located on the inner side of the edge 41 of the lifting plate 40, and the second limiting rib 322 is located on the outer side of the edge 41 of the lifting plate 40. The inner side of the edge 41 of the lifting plate 40 refers to the side of the edge 41 of the lifting plate 40 closer to the center of the lifting plate 40, while the outer side of the edge 41 of the lifting plate 40 refers to the side of the edge 41 of the lifting plate 40 farther from the center of the lifting plate 40. Furthermore, the height of the edge 41 of the lifting plate 40 is higher than the heights of the first limiting rib 321 and the second limiting rib 322. Thus, when the lifting plate 40 rotates, the first limiting rib 321 and the second limiting rib 322 can abut against the inner and outer sides of the edge 41 of the lifting plate 40, respectively, to limit the position of the auxiliary door hinge shaft 31, thereby preventing the auxiliary door hinge shaft 31 from rotating relative to the auxiliary door hinge plate 30.

[0069] In practical applications, the height of the ascending portion 411 of the lifting plate 40 is lower than the height of the roller 34 , and the height of the descending portion 412 is higher than the heights of the first limiting rib 321 and the second limiting rib 322 .

[0070] In the above embodiment, the height of the roller 34 , the first limiting rib 321 and the second limiting rib 322 refers to the distance from the roller 34 , the first limiting rib 321 and the second limiting rib 322 to the lower end surface of the lifting plate 40 .

[0071] As shown in FIG6 , in some embodiments, the roller 34 is disposed between the first limiting rib 321 and the second limiting rib 322 , and the roller 34 is rotatably connected to the first limiting rib 321 and the second limiting rib 322 via a rotating shaft.

[0072] Specifically, the roller 34 is horizontally arranged between the first limiting rib 321 and the second limiting rib 322, and a rotating shaft is provided at both ends of the roller 34, through which the roller 34 is rotatably connected to the first limiting rib 321 and the second limiting rib 322. This arrangement can improve the stability of the roller 34 during rotation.

[0073] As shown in FIG. 6 and FIG. 7 , in some embodiments, the roller 34 is a conical structure, and the upper end surface of the edge 41 of the lifting plate 40 is an inclined surface corresponding to the roller 34 .

[0074] Specifically, the roller 34 is configured as a conical structure, and the edge 41 of the lifting plate 40 abuts the end surface of the roller 34, which is an inclined surface. The side wall of the roller 34 can roll on the inclined surface. In this configuration, the edge 41 of the lifting plate 40 can limit the roller 34, further preventing the auxiliary door hinge shaft 31 from rotating relative to the auxiliary door hinge plate 30.

[0075] As shown in Figures 4, 9, and 10, in some embodiments, the locking device 13 includes a clamp assembly 50. The clamp assembly 50 includes a first clamp 51 and a second clamp 52 rotatably mounted on the auxiliary door 12. The first clamp 51 and the second clamp 52 are disposed opposite each other on either side of the auxiliary door hinge shaft 31. When the auxiliary door hinge shaft 31 descends to the locked position, the auxiliary door hinge shaft 31 pushes the first clamp 51 and the second clamp 52 to rotate toward the auxiliary door hinge shaft 31, thereby clamping the auxiliary door hinge shaft 31.

[0076] Specifically, the housing 01 is provided with a storage cavity, and the main door 11 can rotate to open or close the storage cavity of the housing 01. The secondary door hinge also includes a secondary door hinge plate 30, which is fixed to the main door 11. The secondary door hinge shaft 31 is movably connected to the secondary door hinge plate 30, allowing the secondary door hinge shaft 31 to rise or fall relative to the secondary door hinge plate 30. The secondary door hinge shaft 31 is also provided with a limit structure that limits the secondary door hinge shaft 31 to prevent rotation relative to the secondary door hinge plate 30. The first clamp 51 and the second clamp 52 are rotatably disposed at positions corresponding to the secondary door hinge shaft 31 on the secondary door 12, and the rotation direction of the first clamp 51 and the second clamp 52 is perpendicular to the rotation direction of the secondary door 12. The first clamp 51 and the second clamp 52 can be rotated toward the auxiliary door hinge shaft 31 to clamp the auxiliary door hinge shaft 31. At this time, the auxiliary door 12 and the auxiliary door hinge shaft 31 cannot rotate relative to each other; or, the first clamp 51 or the second clamp 52 can be rotated away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31. At this time, the auxiliary door 12 can rotate relative to the auxiliary door hinge shaft 31.

[0077] As shown in FIG. 9 , when the main door 11 closes the storage cavity, the clamp assembly 50 releases the auxiliary door hinge shaft 31 , and the auxiliary door 12 can rotate around the auxiliary door hinge shaft 31 .

[0078] As shown in Figure 10, when the main door 11 rotates to open the storage chamber, the auxiliary door hinge shaft 31 drops and pushes the first clamp 51 and the second clamp 52 to rotate. When the auxiliary door hinge shaft 31 drops to the locked position, the first clamp 51 and the second clamp 52 clamp the auxiliary door hinge shaft 31 to prevent the auxiliary door 12 from rotating around the auxiliary door hinge shaft 31.

[0079] As shown in Figures 4, 9, and 10, in some embodiments, the door assembly 02 further includes an elastic element 60. The elastic element 60 is elastically connected to the first clamp 51 and the second clamp 52, and can push the first clamp 51 and the second clamp 52 to rotate away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31.

[0080] Specifically, the elastic element 60 is disposed at a position on the secondary door 12 corresponding to the clamp assembly 50, and is elastically connected to the first clamp 51 and the second clamp 52. When the main door 11 closes the storage chamber, the elastic element 60 pushes the first clamp 51 and the second clamp 52 away from the secondary door hinge shaft 31, thereby releasing the secondary door hinge shaft 31. At this time, the secondary door 12 can rotate about the secondary door hinge shaft 31.

[0081] Specifically, the first clamp 51 and the second clamp 52 are rotatably disposed at positions corresponding to the auxiliary door 12 and the auxiliary door hinge shaft 31, and the rotation direction of the first clamp 51 and the second clamp 52 is perpendicular to the rotation direction of the auxiliary door 12. The first clamp 51 and the second clamp 52 can rotate toward the auxiliary door hinge shaft 31 to clamp the auxiliary door hinge shaft 31, in which case the auxiliary door 12 and the auxiliary door hinge shaft 31 cannot rotate relative to each other. Alternatively, the first clamp 51 or the second clamp 52 can rotate away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31, in which case the auxiliary door 12 can rotate relative to the auxiliary door hinge shaft 31.

[0082] As shown in FIG. 9 , when the main door 11 closes the storage cavity, the clamp assembly 50 releases the auxiliary door hinge shaft 31 , and the auxiliary door 12 can rotate around the auxiliary door hinge shaft 31 .

[0083] As shown in Figure 10, when the main door 11 rotates to open the storage chamber, the auxiliary door hinge shaft 31 drops and pushes the first clamp 51 and the second clamp 52 to rotate. When the auxiliary door hinge shaft 31 drops to the locked position, the first clamp 51 and the second clamp 52 clamp the auxiliary door hinge shaft 31 to prevent the auxiliary door 12 from rotating around the auxiliary door hinge shaft 31.

[0084] The elastic element 60 is elastically connected to the first and second clamps 51, 52, and can push the first and second clamps 51, 52 to rotate away from the secondary door hinge axis 31, thereby releasing the secondary door hinge axis 31. The elastic element 60 is disposed at a position corresponding to the clamp assembly 50 on the secondary door 12 and is elastically connected to the first and second clamps 51, 52. When the main door 11 closes the storage cavity, the elastic element 60 pushes the first and second clamps 51, 52 away from the secondary door hinge axis 31, releasing the secondary door hinge axis 31. At this point, the secondary door 12 can rotate about the secondary door hinge axis 31.

[0085] As shown in Figure 8, in some embodiments, the first clamp 51 includes a first rotating portion 511 and a first clamping portion 521, which are connected by a bend. The second clamp 52 includes a second rotating portion 521 and a second clamping portion 522, which are connected by a bend. The first rotating portion 511 and the second rotating portion 521 are located below the auxiliary door hinge shaft 31, and the first clamping portion 521 and the second clamping portion 522 are located on either side of the auxiliary door hinge shaft 31. When the auxiliary door hinge shaft 31 descends, it pushes the first rotating portion 511 and the second rotating portion 521, causing the first clamping portion 521 and the second clamping portion 522 to rotate toward the auxiliary door hinge shaft 31 and clamp the auxiliary door hinge shaft 31.

[0086] Specifically, the first rotating portion 511 and the second rotating portion 521 are located below the auxiliary door hinge shaft 31 and are on the same horizontal plane. When the main door 11 rotates to open, the auxiliary door hinge shaft 31 drops and pushes the first rotating portion 511 and the second rotating portion 521, thereby driving the first clamping portion 521 and the second clamping portion 522 toward the auxiliary door hinge shaft 31. When the auxiliary door hinge shaft 31 drops to the locked position, the first clamping portion 521 and the second clamping portion 522 clamp onto the side wall of the auxiliary door hinge shaft 31 to prevent the auxiliary door 12 from rotating relative to the auxiliary door hinge shaft 31.

[0087] As shown in FIG8 , in some embodiments, a first rotating shaft 513 is provided at the connection between the first rotating portion 511 and the first clamping portion 521, and the first clamping portion 51 is rotatably mounted on the auxiliary door 12 via the first rotating shaft 513. A second rotating shaft 523 is provided at the connection between the second rotating portion 521 and the second clamping portion 522, and the second clamping portion 52 is rotatably mounted on the auxiliary door 12 via the second rotating shaft 523.

[0088] Specifically, a first rotation axis 513 is provided on the side wall of the first clamp 51, and the first rotation axis 513 is provided at the connection between the first rotating portion 511 and the first clamping portion 521. The first rotating portion 511 and the first clamping portion 521 can rotate around the first rotation axis 513. A second rotation axis 523 is provided on the side wall of the second clamp 52, and the second rotation axis 523 is provided at the connection between the second rotating portion 521 and the second clamping portion 522. The second rotating portion 521 and the second clamping portion 522 can rotate around the second rotation axis 523.

[0089] When the auxiliary door hinge shaft 31 pushes the first rotating portion 511 and the second rotating portion 521 to rotate downward, the first clamping portion 521 and the second clamping portion 522 can rotate in a direction close to the auxiliary door hinge shaft 31 .

[0090] As shown in Figures 9 and 10, in some embodiments, an elastic element 60 is disposed below the first rotating portion 511 and the second rotating portion 521, and the elastic element 60 is elastically connected to the first rotating portion 511 and the second rotating portion 521. The elastic element 60 can push the first connecting portion and the second connecting portion to rotate the first clamping portion 521 and the second clamping portion 522 away from the auxiliary door hinge shaft 31 and release the auxiliary door hinge shaft 31.

[0091] Specifically, when the main door 11 is closed, the elastic element 60 can push the first rotating part 511 and the second rotating part 521 to rotate upward. At this time, the first clamping part 521 and the second clamping part 522 can rotate away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31.

[0092] As shown in Figures 9 and 10, in some practical applications, the elastic element 60 is a spring, which is disposed below the first rotating portion 511 and the second rotating portion 521. The spring can push the first connecting portion and the second connecting portion to rotate upward.

[0093] In other practical applications, the elastic element 60 is a compression spring, and compression springs are provided below the first rotating portion 511 and the second rotating portion 521. The two compression springs can respectively push the first connecting portion and the second connecting portion to rotate upward.

[0094] In other practical applications, the elastic element 60 is a tension spring, and the auxiliary door 12 is provided with tension springs at positions corresponding to the first clamping portion 521 and the second clamping portion 522. The two tension springs can respectively pull the first clamping portion 521 and the second clamping portion 522 to rotate away from the auxiliary door hinge axis 31.

[0095] As shown in Figures 5 and 6, in some embodiments, a stop surface 33 is provided at the position corresponding to the auxiliary door hinge shaft 31 and the clamp assembly 50. When the auxiliary door hinge shaft 31 is in the locked position, the first clamp 51 and the second clamp 52 can be clamped on the stop surface 33.

[0096] Specifically, a flat surface is provided at the position corresponding to the first clamping portion 521 and the second clamping portion 522 of the auxiliary door hinge shaft 31 to form a stop surface 33. When the auxiliary door hinge is in the locked position, the first clamping portion 521 and the second clamping portion 522 can be clamped on the stop surface 33 to improve the stability of the first clamping clamp 51 and the second clamping clamp 52 in clamping the auxiliary door hinge shaft 31.

[0097] In practical applications, the weight of the auxiliary door hinge shaft 31 is greater than the elastic force of the elastic element 60 to prevent the auxiliary door hinge shaft 31 from being unable to push the clamping assembly 50 to rotate.

[0098] As shown in FIG1 , an embodiment of the present disclosure further provides a refrigeration device including a cabinet 01 and the above-mentioned door assembly 02 .

[0099] Specifically, in a refrigeration appliance employing the door assembly 02 provided herein, when the main door 11 closes the housing 01, the ascending portion 411 of the lifting plate 40 is positioned corresponding to the secondary door hinge shaft 31. At this point, the ascending portion 411 can lift the secondary door hinge shaft 31 via the abutting portion 32 to prevent the secondary door hinge shaft 31 from triggering the locking device 13. When the main door 11 rotates to open the housing 01, the descending portion 412 of the lifting plate 40 is positioned corresponding to the secondary door hinge shaft 31, allowing the secondary door hinge shaft 31 to fall freely. When the secondary door hinge shaft 31 falls to the locked position, the locking device 13 is triggered, which then locks the secondary door 12 and the secondary door hinge shaft 31 to each other, thereby locking the secondary door 12 to the main door 11. This arrangement eliminates the need for a separate door lock on the door body to lock the secondary door 12 to the main door 11, reducing the thickness of the door body and improving the user experience.

[0100] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A door assembly is applied to a refrigeration device, the refrigeration device comprises a box, wherein: The door assembly includes: A main door is rotatably arranged on the box body; The auxiliary door is rotatably arranged on the main door through an auxiliary door hinge. The auxiliary door hinge includes an auxiliary door hinge shaft provided with an abutment portion, and the auxiliary door hinge shaft is movably arranged on the auxiliary door.

2. The door assembly according to claim 1, characterized in that: Also includes: A lifting plate is connected to the main door through a linkage mechanism, and includes an edge provided with an ascending portion and a descending portion, wherein the edge of the lifting plate is located below the abutting portion and abuts against the abutting portion; and, A locking device, arranged on the auxiliary door, for locking the auxiliary door and the auxiliary door hinge shaft; Among them, when the main door is closed, the rising part of the lifting plate can lift up the auxiliary door hinge shaft, and when the main door is rotated to open, the descending part of the lifting plate moves to the abutment part so that the auxiliary door hinge shaft can fall down, and when the auxiliary door hinge shaft falls to the locking position, the locking device can be triggered to lock the auxiliary door and the auxiliary door hinge shaft.

3. The door assembly according to claim 2, wherein: The main door is arranged on the box body through a main door hinge, and the main door hinge includes a main door hinge shaft; The linkage agencies include: A first gear is fixedly disposed on the main door hinge shaft; and, A second gear is rotatably disposed on the main door and meshed with the first gear; Wherein, the lifting plate is transmission-connected with the second gear; When the main door rotates around the main door hinge, the first gear can drive the second gear to rotate and then drive the lifting plate to rotate.

4. The door assembly according to claim 3, wherein: A connecting column is provided on the side of the second gear facing the lifting plate, and a limiting structure is provided on the connecting column; and, A mounting hole is provided at the center of the lifting plate; Among them, the connecting column can be inserted into the mounting hole, and the limiting structure can fix the second gear and the lifting plate to each other.

5. The door assembly according to claim 4, wherein: The end of the connecting column inserted in the mounting hole is a special-shaped structure, and the mounting hole is a special-shaped hole corresponding to the shape of the end of the connecting column.

6. The door assembly according to any one of claims 2 to 5, wherein: The abutment portion comprises: The roller is in contact with the upper end surface of the edge of the lifting plate.

7. The door assembly according to claim 6, wherein: A first limiting rib and a second limiting rib are provided on one side of the abutting portion facing the lifting plate; The first limiting rib and the second limiting rib are arranged on both sides of the edge of the lifting plate, and the edge of the lifting plate The height of the edge is higher than the height of the first limiting rib and the second limiting rib.

8. The door assembly according to claim 7, wherein: The roller is arranged between the first limiting rib and the second limiting rib, and the roller is rotatably connected to the first limiting rib and the second limiting rib respectively through a rotating shaft.

9. The door assembly according to claim 6, wherein: The roller is of a conical structure, and the upper end surface of the edge of the lifting plate is an inclined surface corresponding to the roller.

10. The door assembly according to any one of claims 1 to 9, wherein: The auxiliary door hinge shaft can rise or fall along a preset track; the door body assembly also includes: The clamp assembly comprises a first clamp and a second clamp which are rotatably arranged on the auxiliary door, and the first clamp and the second clamp are arranged on two sides of the hinge shaft of the auxiliary door opposite to each other; When the auxiliary door hinge shaft descends to the locking position, the auxiliary door hinge shaft can push the first clamp and the second clamp to rotate toward the auxiliary door hinge shaft so that the first clamp and the second clamp clamp the auxiliary door hinge shaft.

11. The door assembly according to claim 10, wherein: The elastic element is elastically connected to the first clamp and the second clamp, and can push the first clamp and the second clamp to rotate in a direction away from the auxiliary door hinge shaft to release the auxiliary door hinge shaft.

12. The door assembly according to claim 11, wherein: The first clamp includes a first rotating portion and a first clamping portion, and the first rotating portion and the first clamping portion are bent and connected; and, The second clamp includes a second rotating portion and a second clamping portion, and the second rotating portion and the second clamping portion are bent and connected; Wherein, the first rotating part and the second rotating part are located below the auxiliary door hinge shaft, and the first clamping part and the second clamping part are respectively located on both sides of the auxiliary door hinge shaft; When the auxiliary door hinge shaft descends, it can push the first rotating part and the second rotating part, so that the first clamping part and the second clamping part rotate in a direction close to the auxiliary door hinge shaft and clamp the auxiliary door hinge shaft.

13. The door assembly according to claim 12, wherein: A first rotating shaft is provided at the connection between the first rotating part and the first clamping part, and the first clamp is rotatably provided on the auxiliary door via the first rotating shaft; and, A second rotating shaft is provided at the connection between the second rotating portion and the second clamping portion, and the second clamp is rotatably provided on the auxiliary door via the second rotating shaft.

14. The door assembly according to claim 12, wherein: The elastic element is disposed below the first rotating part and the second rotating part, and the elastic element is elastically connected to the first rotating part and the second rotating part respectively; The elastic element can push the first connecting portion and the second connecting portion so that the first clamping portion and the second clamping portion Rotate the auxiliary door hinge shaft away from it and release it.

15. The door assembly according to any one of claims 10 to 14, wherein: A stop surface is provided at the position corresponding to the auxiliary door hinge shaft and the clamp assembly; When the auxiliary door hinge shaft is located at the locking position, the first clamp and the second clamp can be clamped on the stop surface.

16. A refrigeration device comprising: Box; and, A door assembly as claimed in any one of claims 1 to 15.

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