WO2025051244A1 - Door body assembly and refrigeration apparatus - Google Patents

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

This application is based on Chinese patent application with application number 202311161602.0 and application date September 8, 2023, and Chinese patent application with application number 202311161571.9 and application date September 8, 2023, and claims the priority of the Chinese patent application. The entire contents of the Chinese patent application are hereby introduced into this application as a reference.

Technical Field

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

Background Art

With the improvement of living standards, users' requirements for refrigerator storage, energy saving and freshness preservation are gradually increasing. Most refrigerators on the market are single-door or double-door refrigerators with limited capacity. When the refrigerator door is opened, a large amount of cold air is lost, resulting in low refrigerator efficiency. Therefore, door-in-door refrigerators have emerged.

In the door-in-door refrigerator in the related art, a door lock is provided on the secondary door for locking 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.

In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

Most of the existing door-in-door refrigerators with door locks on the secondary doors have separate door locks on the door body to lock the secondary door, which increases the thickness of the door body and reduces the user experience.

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 the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field.

Summary of the invention

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 components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

The disclosed embodiments provide a door body assembly and a refrigeration device, which can lock a secondary door to a 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.

The embodiment of the present disclosure provides a door assembly, which is applied to a refrigeration device, wherein the refrigeration device includes a box body. The door assembly includes a main door and a secondary door, wherein the main door is rotatably arranged on the box body; the secondary door is rotatably arranged on the main door through a secondary door hinge, the secondary door hinge includes a secondary door hinge shaft provided with an abutment portion, and the secondary door hinge shaft is movably arranged on the secondary door.

In some embodiments, the door assembly further comprises a lifting plate and a locking device, wherein the lifting plate is connected to the main door through a linkage mechanism, and comprises 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 it abuts against the abutment part; the locking device is arranged 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 part of the lifting plate can lift 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, 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.

In some embodiments, the locking portion further includes a clamp assembly, which includes a first clamp and a second clamp rotatably disposed on the auxiliary door, and the first clamp and the second clamp are relatively disposed on both sides of the auxiliary door hinge shaft. When the auxiliary door hinge shaft drops to the locking position, the auxiliary door hinge shaft can push the first clamp and the second clamp to rotate in the direction of the auxiliary door hinge shaft, so that the first clamp and the second clamp clamp the auxiliary door hinge shaft.

An embodiment of the present disclosure provides a refrigeration device, which includes a box body and the above-mentioned door body assembly.

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

One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the drawings do not constitute a scale limitation, and wherein:

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

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

FIG3 is a partial structural schematic 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;

FIG4 is a schematic diagram of the structure 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;

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;

FIG6 is a schematic structural diagram of a secondary door hinge shaft provided in an embodiment of the present disclosure;

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

FIG8 is a schematic structural diagram of a clamp assembly provided in an embodiment of the present disclosure;

FIG9 is a schematic structural diagram of a clamp assembly releasing a secondary door hinge shaft provided by an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a clamp assembly clamping a secondary door hinge shaft provided in an embodiment of the present disclosure.

Reference numerals:
01: box body; 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 part; 412: descending part; 42: mounting hole;
50: clamp assembly; 51: first clamp; 511: first rotating part; 512: first clamping part; 513: first rotating shaft; 52: second clamp; 521: second rotating part; 522: second clamping part; 523: second rotating shaft;
60: elastic element;
71: first gear; 72: second gear; 721: connecting column.

DETAILED DESCRIPTION

In order to be able to understand the features and technical contents 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 attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the 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.

The reference to any related art in the specification is not and should not be taken as an admission or any form of implication 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.

The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

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 have 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.

In addition, the terms "disposed", "connected" and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected or The term "connection" is either an indirect connection through an intermediate medium or an internal connection between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

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

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 indicates: A or B.

The term "and/or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and/or B means: A or B, or, A and B.

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

As shown in FIGS. 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.

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 disposed on the box body 01 .

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

The door body 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.

Specifically, the main door can be opened and closed on the box body, and the auxiliary door is rotatably arranged on the main door through the auxiliary door hinge. In some usage scenarios, the main door and the auxiliary door correspond to the same storage space, and opening the auxiliary door is more convenient and labor-saving. In some usage scenarios, an independent storage area is defined inside the main door, and the auxiliary door is opened to operate the independent storage area.

In order to prevent the secondary door from being opened by mistake when the main door is opened or the main door from being opened by mistake when the secondary door is opened, the secondary door hinge shaft is arranged to be movable along its own axis between a first position and a second position. When the rotation axes of the main door and the secondary door are arranged vertically, the secondary door hinge shaft can move up and down. Since the secondary door hinge shaft is in a form that can move up and down, the first position of the secondary door hinge shaft serves as a locking position and the second position as an unlocking position. In the locking position, the secondary door hinge shaft cannot rotate to prevent the secondary door from being opened. In the unlocking position, the secondary door hinge shaft can rotate to allow the secondary door to be opened.

When the door assembly provided by the embodiment of the present disclosure is used, the hinge shaft of the auxiliary door is locked or unlocked by moving up and down, and the moving direction of the moving part is along the height direction of the auxiliary door, which allows the auxiliary door to be designed with a smaller thickness. This can improve the aesthetics of the refrigeration equipment and reduce the cost of the refrigeration equipment.

Exemplarily, as a way of locking or unlocking the secondary door by lifting and lowering the secondary door hinge shaft, the locking portion includes a driving structure, which is connected to the main door and the secondary door hinge shaft, and the secondary door hinge shaft is driven to lift and lower when the main door is opened and closed by the driving structure; wherein, when the main door is opened, the secondary door hinge shaft is lowered from the second position to the first position, and when the main door is closed, the secondary door hinge shaft is lowered from the second position to the first position. The auxiliary door hinge rises from the first position to the second position.

The lifting and lowering of the auxiliary door hinge shaft is driven by a driving structure, the input end of the driving structure comes from the rotation of the main door, and the output end of the driving structure is used to drive the auxiliary door hinge shaft to lift and lower. In this way, when the main door is opened, the driving structure can drive the auxiliary door hinge shaft to move to a locked position, thereby preventing the auxiliary door from being opened by mistake when the main door is opened. When the main door is closed, the driving structure drives the auxiliary door hinge shaft to move to an unlocked position, thereby allowing the auxiliary door to be opened.

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. In the process of opening the main door, the auxiliary door hinge shaft moves downward and is locked. In this way, the additional space required for the auxiliary door hinge shaft to move in the height direction can be reduced.

With this arrangement, the lifting and lowering of the auxiliary door hinge shaft is based on the opening and closing of the main door, and the unlocking and locking of the auxiliary door hinge shaft occurs automatically based on the lifting and lowering state of the main door. The purely mechanical form makes the locking and unlocking of the auxiliary door reliable and can be achieved at a lower cost.

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, and 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, and when the main door is rotated to open, the descending portion of the lifting plate moves to the abutment 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 13 can be triggered to lock the auxiliary door and the auxiliary door hinge shaft.

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 arranged on the box body 01. The secondary door 12 is rotatably arranged on the main door 11 through a secondary door hinge, and 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 arranged on the secondary door 12. The lifting plate 40 is connected to the main door 11 through a linkage mechanism 14, and includes an edge 41 provided with an ascending portion 411 and a descending portion 412, and 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 arranged on the secondary door 12, and is used to lock 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 up 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.

Specifically, the box body 01 is provided with a storage cavity, and the main door 11 can be rotated to open or close the storage cavity of the box body 01. The auxiliary door hinge also includes an auxiliary door hinge plate 30, and the auxiliary door hinge plate 30 is fixedly arranged on the main door 11, and the auxiliary door hinge shaft 31 is movably connected with the auxiliary door hinge plate 30, so that the auxiliary door hinge shaft 31 can rise or fall relative to the auxiliary door hinge plate 30. The auxiliary door hinge shaft 31 is also provided with a limiting structure, and the limiting structure can limit the auxiliary door hinge shaft 31 to prevent the auxiliary door hinge shaft 31 from rotating relative to the auxiliary door hinge plate 30. The edge 41 of the lifting plate 40 is extended upward, and the portion with a higher height of the edge 41 constitutes a rising portion 411, and the portion with a lower height of the edge 41 constitutes a descending portion 412. The abutment portion 32 of the auxiliary door hinge shaft 31 The abutting portion 32 is arranged above the edge 41 of the lifting portion, and can abut against the rising portion 411 or the descending portion 412, as shown in FIG5 . 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.

As shown in FIG9 , when the main door 11 closes the storage chamber, the abutting portion 32 abuts against the rising portion 411. At this time, the rising portion 411 lifts the auxiliary door hinge shaft 31 through the abutting portion 32 to prevent the auxiliary door hinge shaft 31 from triggering the locking device 13. In this way, the auxiliary door 12 is unlocked from the main door 11, so that the user can rotate the auxiliary door 12.

As shown in FIG10 , 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 abutting 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 locking position. At this time, the auxiliary door hinge shaft 31 can trigger the locking device 13, and the locking device 13 locks the auxiliary door hinge shaft 31 to prevent the auxiliary door 12 from rotating relative to the main door 11.

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 .

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 .

As shown in FIGS. 2 to 4 , in some embodiments, the main door 11 is provided on the box body 01 through 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 provided on the main door hinge shaft 21. The second gear 72 is rotatably provided on the main door 11 and is meshed with the first gear 71. The lifting plate 40 is transmission-connected with the second gear 72. When the main door 11 rotates around the main door 11 hinge, the first gear 71 can drive the second gear 72 to rotate and then drive the lifting plate 40 to rotate.

Specifically, the hinge of the main door 11 includes a main door hinge plate 20 and a main door hinge shaft 21 fixedly arranged on the box body 01, and the main door 11 can rotate around the main door hinge shaft 21. The first gear 71 is arranged on the main door hinge shaft 21, and the first gear 71 is arranged coaxially with the main door hinge shaft 21. The second gear 72 is provided with a rotating shaft on the side facing the main door 11, and the second gear 72 is rotatably arranged on the main door 11 through the rotating shaft, and the second gear 72 is meshed and connected with the first gear 71.

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.

As shown in Fig. 4 and Fig. 5, in some embodiments, a connecting column 721 is provided on the side of the second gear 72 facing the lifting plate 40, and a limiting structure is provided on the connecting column 721. 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.

Specifically, the connecting column 721 is arranged on the side of the second gear 72 facing the lifting plate 40, and the connecting column 721 is arranged coaxially with the second gear 72. A mounting hole 42 is arranged at the center of the lifting plate 40, and the shape of the mounting hole 42 is similar to that of the connecting column 721. The column 721 is correspondingly arranged. The connecting column 721 can be inserted into the mounting hole 42 to mount the lifting plate 40 on the second gear 72. At this time, the lifting plate 40 and the second gear 72 are concentrically arranged.

As shown in FIGS. 3 and 4 , in some practical applications, the lifting plate 40 is located above the second gear 72 , the connecting column 721 is disposed on the upper end surface of the second gear 72 , and the rotating shaft is disposed on the lower end surface of the second gear 72 .

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 .

Specifically, the end of the connecting column 721 inserted in the mounting hole 42 is a special-shaped structure to form a limiting portion. After the connecting column 721 is inserted in 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.

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.

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

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.

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 can roll between the ascending portion 411 and the descending portion 412 relative to the lifting plate 40 to achieve the rise or fall of the auxiliary door hinge shaft 31. In this way, the friction between the abutting portion 32 and the edge 41 of the lifting plate 40 can be reduced, which can not only prevent the auxiliary door hinge shaft 31 from rotating relative to the auxiliary door hinge plate 30, but also reduce the wear of the abutting portion 32 and the edge 41 of the lifting plate 40.

As shown in Fig. 5 and Fig. 6, in some embodiments, the side of the abutting portion 32 facing the lifting plate 40 is provided with a first limiting rib 321 and a second limiting rib 322. The first limiting rib 321 and the second limiting rib 322 are relatively arranged on both 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.

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 close to the center of the lifting plate 40, and 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 away from the center of the lifting plate 40. At the same time, 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. In this way, when the lifting plate 40 rotates, the first limiting rib 321 and the second limiting rib 322 can respectively abut against the inner side and the outer side of the edge 41 of the lifting plate 40 to limit the auxiliary door hinge shaft 31, thereby preventing the auxiliary door hinge shaft 31 from being relative to the auxiliary door hinge plate. 30 turns.

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 height of the first limiting rib 321 and the second limiting rib 322 .

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 .

As shown in FIG. 6 , 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 through a rotating shaft.

Specifically, the roller 34 is horizontally arranged between the first limiting rib 321 and the second limiting rib 322, and a rotating shaft is arranged 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. Such an arrangement can improve the stability of the roller 34 when rotating.

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 .

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

As shown in FIGS. 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 disposed on the auxiliary door 12, and the first clamp 51 and the second clamp 52 are relatively disposed on both sides of the auxiliary door hinge shaft 31. When the auxiliary door hinge shaft 31 drops to the locking position, the auxiliary door hinge shaft 31 can push the first clamp 51 and the second clamp 52 to rotate in the direction of the auxiliary door hinge shaft 31, so that the first clamp 51 and the second clamp 52 clamp the auxiliary door hinge shaft 31.

Specifically, the box body 01 is provided with a storage cavity, and the main door 11 can rotate to open or close the storage cavity of the box body 01. The auxiliary door hinge also includes an auxiliary door hinge plate 30, which is fixedly arranged on the main door 11, and the auxiliary door hinge shaft 31 is movably connected to the auxiliary door hinge plate 30, so that the auxiliary door hinge shaft 31 can rise or fall relative to the auxiliary door hinge plate 30. The auxiliary door hinge shaft 31 is also provided with a limiting structure, which can limit the auxiliary door hinge shaft 31 to prevent the auxiliary door hinge shaft 31 from rotating relative to the auxiliary door hinge plate 30. The first clamp 51 and the second clamp 52 are rotatably arranged at the position 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 direction approaching the auxiliary door hinge shaft 31 to clamp the auxiliary door hinge shaft 31, and 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 rotate toward the direction away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31, and at this time the auxiliary door 12 can rotate relative to the auxiliary door hinge shaft 31.

As shown in FIG9 , when the main door 11 closes the storage chamber, the clamp assembly 50 releases the auxiliary door hinge shaft 31. The auxiliary door 12 can rotate around the auxiliary door hinge shaft 31.

As shown in FIG10 , when the main door 11 rotates to open the storage cavity, the auxiliary door hinge shaft 31 falls and pushes the first clamp 51 and the second clamp 52 to rotate. When the auxiliary door hinge shaft 31 drops to the locking 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.

As shown in Fig. 4, Fig. 9 and Fig. 10, in some embodiments, the door body 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.

Specifically, the elastic element 60 is disposed at a position corresponding to the auxiliary door 12 and the clamp assembly 50, and the elastic element 60 is elastically connected to the first clamp 51 and the second clamp 52. When the main door 11 closes the storage cavity, the elastic element 60 can push the first clamp 51 and the second clamp 52 to move away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31, and the auxiliary door 12 can rotate around the auxiliary door hinge shaft 31.

Specifically, the first clamp 51 and the second clamp 52 are rotatably arranged 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, and 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 rotate toward the direction away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31, and at this time, the auxiliary door 12 can rotate relative to the auxiliary door hinge shaft 31.

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 .

As shown in FIG10 , when the main door 11 rotates to open the storage cavity, the auxiliary door hinge shaft 31 falls and pushes the first clamp 51 and the second clamp 52 to rotate. When the auxiliary door hinge shaft 31 drops to the locking 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.

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 in a direction away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31. The elastic element 60 is disposed at a position corresponding to the auxiliary door 12 and the clamp assembly 50, and the elastic element 60 is elastically connected to the first clamp 51 and the second clamp 52. When the main door 11 closes the storage cavity, the elastic element 60 can push the first clamp 51 and the second clamp 52 to move in a direction away from the auxiliary door hinge shaft 31 to release the auxiliary door hinge shaft 31, and the auxiliary door 12 can rotate around the auxiliary door hinge shaft 31.

As shown in FIG8 , in some embodiments, the first clamp 51 includes a first rotating portion 511 and a first clamping portion 521, and the first rotating portion 511 and the first clamping portion 521 are connected in a bent manner. The second clamp 52 includes a second rotating portion 521 and a second clamping portion 522, and the second rotating portion 521 and the second clamping portion 522 are connected in a bent manner. 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 both sides of the auxiliary door hinge shaft 31. When the auxiliary door hinge shaft 31 descends, it can push the first rotating portion 511 and the second rotating portion 521 to move the second door hinge shaft 31 downward. The first clamping portion 521 and the second clamping portion 522 rotate toward the direction approaching the auxiliary door hinge shaft 31 and clamp the auxiliary door hinge shaft 31 .

Specifically, the first rotating portion 511 and the second rotating portion 521 are located below the auxiliary door hinge shaft 31, and the first rotating portion 511 and the second rotating portion 521 are located on the same horizontal plane. When the main door 11 rotates to open, the auxiliary door hinge shaft 31 falls 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 to move in a direction close to the auxiliary door hinge shaft 31. When the auxiliary door hinge shaft 31 falls to the locking position, the first clamping portion 521 and the second clamping portion 522 are clamped on the side wall surface of the auxiliary door hinge shaft 31 to prevent the auxiliary door 12 from rotating relative to the auxiliary door hinge shaft 31.

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 disposed 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 disposed on the auxiliary door 12 via the second rotating shaft 523.

Specifically, a first rotating shaft 513 is disposed on the side wall surface of the first clamp 51, and the first rotating shaft 513 is disposed at the connection between the first rotating portion 511 and the first clamping portion 521, and the first rotating portion 511 and the first clamping portion 521 can rotate around the first rotating shaft 513. A second rotating shaft 523 is disposed on the side wall surface of the second clamp 52, and the second rotating shaft 523 is disposed at the connection between the second rotating portion 521 and the second clamping portion 522, and the second rotating portion 521 and the second clamping portion 522 can rotate around the second rotating shaft 523.

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 .

As shown in Fig. 9 and Fig. 10, in some embodiments, the 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.

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.

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

In some other practical applications, the elastic element 60 is a compression spring, and compression springs are disposed 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.

In other practical applications, the elastic element 60 is a tension spring, and the positions of the auxiliary door 12 corresponding to the first clamping portion 521 and the second clamping portion 522 are respectively provided with tension springs. 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.

As shown in Fig. 5 and Fig. 6, in some embodiments, a stop surface 33 is provided at a 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.

Specifically, a plane is provided at the position corresponding to the auxiliary door hinge shaft 31 and the first clamping portion 521 and the second clamping portion 522 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 clamp 51 and the second clamp 52 clamping the auxiliary door hinge shaft 31.

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.

As shown in FIG. 1 , the embodiment of the present disclosure further provides a refrigeration device including a cabinet 01 and the above-mentioned door assembly 02 .

Specifically, in the refrigeration equipment using the door assembly 02 provided by the present application, when the main door 11 closes the box body 01, the rising portion 411 of the lifting plate 40 is located at a position corresponding to the auxiliary door hinge shaft 31, and the rising portion 411 can lift the auxiliary door hinge shaft 31 through the abutment portion 32 to prevent the auxiliary door hinge shaft 31 from triggering the locking device 13. When the main door 11 rotates to open the box body 01, the descending portion 412 of the lifting plate 40 is located at a position corresponding to the auxiliary door hinge shaft 31, and the auxiliary door hinge shaft 31 can fall freely. When the auxiliary door hinge shaft 31 falls to the locking position, the locking device 13 can be triggered, and the locking device 13 can lock the auxiliary door 12 and the auxiliary door hinge shaft 31 with each other, thereby locking the auxiliary door 12 to the main door 11. In this way, the auxiliary door 12 can be locked to the main door 11 without setting a separate door lock on the door body, which reduces the thickness of the door body and improves the user experience.

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 explicitly 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 (16)

A door assembly is applied to a refrigeration device, the refrigeration device includes a box body, 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. The door assembly according to claim 1, further comprising: 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. 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. 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. 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. 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. 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. 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. The door assembly according to claim 6, wherein: The roller is a conical structure, and the upper end surface of the edge of the lifting plate is an inclined surface corresponding to the roller. 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 trajectory; the door assembly further comprises: 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. 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. 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. 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. 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. 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. A refrigeration device, comprising: cabinet; and, A door assembly as claimed in any one of claims 1 to 15.