Door body assembly and refrigeration device

Abstract

The present application relates to the technical field of household appliances, and discloses a door body assembly, comprising a main door, an auxiliary door, a handle and a clamping block assembly. The auxiliary door is rotatably arranged on the main door by means of an auxiliary door hinge, and the auxiliary door hinge comprises an auxiliary door hinge shaft arranged on the auxiliary door. The handle is movably arranged on the auxiliary door. The clamping block assembly comprises a first clamping block and a second clamping block, and the first clamping block and the second clamping block are oppositely arranged on two sides of the auxiliary door hinge shaft. Additionally, the present application further discloses a refrigeration device.

Description

Door assemblies and refrigeration equipment

[0001] This application is based on the Chinese patent application with application number 202311246694.2 and application date on September 25, 2023, and the Chinese patent application with application number 202311243261.1 and application date on September 25, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced 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 disclosed embodiments provide a door assembly comprising a main door, a secondary door, a handle, and a clamping block assembly. The secondary door is pivotally attached to the main door via a secondary door hinge, wherein the secondary door hinge includes a secondary door hinge shaft disposed on the secondary door. The handle is movably attached to the secondary door. The clamping block assembly comprises a first clamping block and a second clamping block, with the first clamping block and the second clamping block being disposed oppositely on either side of the secondary door hinge shaft.

[0012] In some embodiments, the door body assembly also includes a handle and a drive guide piston, wherein the handle is movably arranged on the auxiliary door; the drive guide piston is movably arranged at a position corresponding to the auxiliary door and the handle, and the drive guide piston is transmission-connected to the clamping block assembly; the handle is connected to the drive guide piston through a linkage assembly; the handle can drive the drive guide piston to move in the vertical direction through the linkage assembly, thereby driving the first clamping block and the second clamping block to clamp or release the hinge shaft of the auxiliary door.

[0013] In some embodiments, the linkage assembly includes a linkage guide piston, which is movably arranged at a position corresponding to the auxiliary door and the handle, and includes a linkage piston part that is transmission-connected to the driving guide piston and a linkage connecting rod connected to the handle; wherein, the handle can drive the driving guide piston to move vertically through the linkage guide piston.

[0014] In some embodiments, the door body assembly also includes a locking guide piston and a gear set, wherein the locking guide piston includes a locking piston portion arranged corresponding to the auxiliary door hinge shaft; the gear set rotates the first clamp block and the second clamp block to connect to the auxiliary door; the locking guide piston can move in the vertical direction and drive the first clamp block and the second clamp block to rotate toward or away from the auxiliary door hinge shaft, so that the first clamp block and the second clamp block clamp or release the auxiliary door hinge shaft.

[0015] In some embodiments, the locking piston portion is provided with a locking guide groove, and the first clamp block and the second clamp block are slidably arranged in the locking guide groove; wherein, when the locking guide piston moves, the locking guide groove can drive the first clamp block and the second clamp block to rotate.

[0016] In some embodiments, the gear set includes a first gear and a second gear, wherein the first gear includes a first central shaft rotationally connected to the auxiliary door and a first eccentric shaft rotationally connected to the first clamping block; the second gear includes a second central shaft rotationally connected to the auxiliary door and a second eccentric shaft rotationally connected to the second clamping block; the first gear and the second gear are meshingly connected.

[0017] The embodiment of the present disclosure further provides a refrigeration device, comprising a housing and the above-mentioned door assembly, wherein the main door is rotatably arranged on the housing.

[0018] 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

[0019] 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 are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0020] FIG1 is a schematic structural diagram of a refrigeration equipment assembly provided by an embodiment of the present disclosure;

[0021] FIG2 is a schematic structural diagram of a door assembly provided by an embodiment of the present disclosure;

[0022] FIG3 is a cross-sectional view of a door assembly provided in an embodiment of the present disclosure;

[0023] FIG4 is a schematic diagram of a partial structure of a door assembly provided in an embodiment of the present disclosure;

[0024] FIG5 is a schematic diagram of a partial structure of another door assembly provided by an embodiment of the present disclosure;

[0025] FIG6 is a schematic structural diagram of a clamping block assembly rotatably connected to a gear set according to an embodiment of the present disclosure;

[0026] FIG7 is a schematic structural diagram of a first gear provided by an embodiment of the present disclosure;

[0027] FIG8 is a cross-sectional view of another door assembly provided by an embodiment of the present disclosure;

[0028] FIG9 is a schematic diagram of a partial structure of another door assembly provided in an embodiment of the present disclosure;

[0029] FIG10 is a schematic structural diagram of a first connecting rod slidably connected to a linkage guide groove provided by an embodiment of the present disclosure.

[0030] Reference numerals:

[0031] 01: Box body; 02: Main door; 03: Secondary door; 310: Handle base; 04: Handle; 410: Sliding part;

[0032] 10: Auxiliary door hinge; 11: Auxiliary door hinge shaft;

[0033] 20: clamping block assembly; 21: first clamping block; 22: second clamping block;

[0034] 30: Locking guide piston; 31: Locking piston portion; 32: Locking connecting rod; 33: Locking bucket seat; 34: Unlocking spring; 35: Locking guide groove; 36: Locking guide cavity;

[0035] 40: driving guide piston; 41: driving piston portion; 421: first connecting rod; 422: second connecting rod; 423: sliding protrusion; 43: driving bucket seat; 44: driving spring; 45: driving guide chamber;

[0036] 50: Transmission assembly; 51: First pulley; 52: Second pulley; 53: Transmission rope;

[0037] 60: linkage assembly; 600: linkage guide piston; 61: linkage piston portion; 62: linkage connecting rod; 63: linkage bucket seat; 64: linkage guide groove;

[0038] 70: Gear set; 71: First gear; 711: First eccentric shaft; 712: First center shaft; 72: Second gear; 721: Second eccentric shaft. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In addition, the terms "disposed," "connected," and "fixed" should be understood broadly. For example, "connected" can mean a fixed connection, a detachable 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 intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this disclosure can be understood based on the specific circumstances. Unless otherwise specified, the term "plurality" means two or more.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] As shown in Figures 1 to 10, the embodiments of the present disclosure provide a door body assembly and a refrigeration device, which can lock the auxiliary door 03 to the main door 02 without providing a separate door lock on the door body, thereby reducing the thickness of the door body and improving the user experience.

[0048] As shown in Figures 1 to 10, an embodiment of the present disclosure provides a door assembly, which includes a main door 02, a secondary door 03, and a clamping block assembly 20. The secondary door 03 is rotatably mounted on the main door 02 via a secondary door hinge 10, and the secondary door hinge includes a secondary door hinge shaft 11 disposed on the secondary door 03. The clamping block assembly 20 includes a first clamping block 21 and a second clamping block 22 that are transmission-connected to a drive guide piston 40, and the first clamping block 21 and the second clamping block 22 are disposed on opposite sides of the secondary door hinge shaft 11.

[0049] The door assembly provided in the embodiments of the present disclosure is exemplarily applied to a door-in-door refrigerator. The door assembly includes a main door 02 and a secondary door 03. The main door has a storage cavity within it, and the secondary door is hinged and openable to the main door. Objects can be retrieved and placed in the storage cavity only when the secondary door is open. Objects can be retrieved and placed in the refrigerator's refrigerated space when the main door is open.

[0050] To prevent the secondary door from accidentally opening when the main door is opened, or vice versa, the door assembly also includes a clamping block assembly 20. When the clamping block assembly 20 clamps the secondary door hinge shaft, the secondary door cannot rotate relative to the main door, thereby locking the secondary door. When the clamping block assembly 20 releases the clamping block, the secondary door is unlocked.

[0051] The door body assembly provided in the embodiment of the present disclosure locks the auxiliary door through the clamping block assembly in cooperation with the auxiliary door hinge shaft, without the need for an additional door lock, thereby reducing the cost of the door body assembly and allowing the auxiliary door to be thinner.

[0052] Optionally, the door assembly further includes a handle and a drive guide piston 40. The handle 04 is movably mounted on the auxiliary door 03. The drive guide piston 40 is movably mounted at a position on the auxiliary door 03 corresponding to the handle 04. The handle 04 is connected to the drive guide piston 40 via a linkage assembly 60. The handle 04 can drive the drive guide piston 40 to move vertically via the linkage assembly 60, thereby driving the first clamping block 21 and the second clamping block 22 to clamp or release the auxiliary door hinge shaft 11.

[0053] Taking the door assembly as an example, the refrigeration equipment includes a housing 01 with a storage chamber. A main door 02 is pivotally mounted on housing 01 to open or close the storage chamber. A secondary door hinge 10 also includes a secondary door hinge plate. A secondary door hinge shaft 11 is located at a position corresponding to the secondary door 03. The secondary door hinge plate is fixed to the main door 02, and the secondary door hinge shaft 11 is pivotally mounted on the secondary door 03 to pivotally attach the secondary door 03 to the main door 02. A handle 04 is movably mounted on the secondary door 03, allowing the user to rotate the main door 02. A drive guide piston 40 is movably mounted on the secondary door 03, corresponding to the handle 04. The handle 04 is connected to the drive guide piston 40 via a linkage assembly 60. The handle 04 and linkage assembly 60 allow the user to move the drive guide piston 40 vertically upward or downward.

[0054] When the main door 02 closes the storage chamber, the first and second clamps 21 and 22 release the secondary door hinge shaft 11, as shown in Figure 4 . To open the main door 02, the user can simply pull the handle 04. At this point, the handle 04 drives the guide piston 40 vertically downward via the linkage assembly 60. The guide piston 40 then drives the first and second clamps 21 and 22 to clamp the secondary door hinge shaft 11. This locks the secondary door 03 and the secondary door hinge shaft 11 against each other, preventing the user from rotating the secondary door 03 relative to the main door 02, as shown in Figure 5 . After the user closes the main door 02, the guide piston 40 moves vertically upward, driving the first and second clamps 21 and 22 to release the secondary door hinge shaft 11. At this point, the first and second clamps 21 and 22 unlock the secondary door hinge shaft 11, allowing the user to rotate the secondary door 03 independently of the main door 02.

[0055] In actual application, the auxiliary door 03 is also provided with a buckle. When the first clamping block 21 and the second clamping block 22 release the auxiliary door hinge shaft 11, the user can directly pull the auxiliary door 03 to rotate relative to the main door 02 through the buckle.

[0056] As shown in Figures 8 to 10, in some embodiments, the linkage assembly 60 includes a linkage guide piston 600. The linkage guide piston 600 is movably disposed at a position corresponding to the auxiliary door 03 and the handle 04, and includes a linkage piston portion 61 that is transmission-connected to the drive guide piston 40 and a linkage connecting rod 62 that is connected to the handle 04. The handle 04 can drive the drive guide piston 40 to move vertically via the linkage guide piston 600.

[0057] Specifically, the linkage guide piston 600 is horizontally positioned on the auxiliary door 03 at a position corresponding to the handle 04. The linkage guide piston 600 includes a linkage piston portion 61 that is transmission-connected to the drive guide piston 40 and a linkage connecting rod 62 that extends toward the handle 04, as shown in Figures 8 and 9. The handle 04 is fixedly connected to the linkage connecting rod 62. When the user pulls the handle 04, the handle 04 can drive the linkage piston portion 61 to move horizontally via the linkage connecting rod 62. At this time, the linkage piston portion 61 can drive the drive guide piston 40 to rotate in the vertical direction.

[0058] As shown in Figures 9 and 10, in some embodiments, the linkage piston portion 61 is obliquely provided with a linkage guide groove 64. A first connecting rod 421 is extended from the driving guide piston 40 toward one side of the linkage guide groove 64. The first connecting rod 421 is slidably connected to the linkage guide groove 64.

[0059] Specifically, the linkage guide groove 64 is obliquely disposed on the linkage piston portion 61. A sliding protrusion 423 is provided on the end of the first connecting rod 421 corresponding to the linkage guide groove 64. The sliding protrusion 423 is inserted into the linkage guide groove 64 and slides within the linkage guide groove 64. Thus, when the linkage guide piston 600 moves horizontally, the sliding protrusion 423 can slide within the linkage guide groove 64. At this time, the wall surface of the linkage guide groove 64 pushes the sliding protrusion 423 downward or upward, thereby driving the drive guide piston 40 downward or upward.

[0060] As shown in Figure 9, optionally, the driving guide piston 40 is arranged above the linkage guide piston 600, and one end of the first connecting rod 421 is fixedly arranged on the lower end surface of the driving piston part 41, and the second end of the first connecting rod 421 extends downward to the linkage guide groove 64.

[0061] As shown in FIG9 and FIG10 , in some embodiments, the linkage guide slot 64 includes a first end close to the handle 04 and a second end away from the handle 04 , and the height of the first end of the linkage guide slot 64 is higher than the height of the second end.

[0062] Specifically, when the user pulls the handle 04, the handle 04 can drive the linkage guide piston 600 to move toward the handle 04. At this time, the wall surface of the linkage guide groove 64 can push the driving guide piston 40 downward through the sliding protrusion 423, thereby driving the first clamping block 21 and the second clamping block 22 to clamp the auxiliary door hinge shaft 11. When the user pushes the handle 04, the handle 04 can drive the linkage guide piston 600 to move away from the handle 04. At this time, the wall surface of the linkage guide groove 64 can push the driving guide piston 40 upward through the sliding protrusion 423, thereby driving the first clamping block 21 and the second clamping block 22 to release the auxiliary door hinge shaft 11.

[0063] As shown in Figures 8 and 9, in some embodiments, the linkage assembly 60 further includes a linkage base 63. The linkage base 63 is provided with a linkage guide cavity. The linkage piston portion 61 is disposed in the linkage guide cavity and can move horizontally along the linkage guide cavity.

[0064] Specifically, the linkage base 63 is fixedly mounted on the secondary door 03 at a position corresponding to the linkage guide piston 600. A hollow cavity is defined within the linkage base 63 to form a linkage guide cavity. The linkage guide cavity's guiding direction is defined as either approaching or away from the handle 04. The linkage piston 61 is movably mounted within the linkage guide cavity and can slide along the cavity toward or away from the handle 04.

[0065] Optionally, an opening is provided on the wall of the linkage bucket seat 63 facing the handle 04 , and the linkage connecting rod 62 can extend out of the linkage bucket seat 63 through the opening and be fixedly connected to the handle 04 .

[0066] Optionally, the linkage assembly 60 further includes a linkage spring. This linkage spring is positioned on the side of the linkage piston portion 61 that faces the handle 04, with its two ends abutting the linkage piston portion 61 and the auxiliary door 03, respectively. This arrangement allows the linkage spring to push the linkage guide piston 600 away from the handle 04.

[0067] As shown in FIG8 , in some embodiments, the drive guide piston 40 includes a drive piston portion. The door assembly further includes a drive barrel seat 43 . The drive barrel seat 43 is provided with a drive guide cavity 45 . The drive piston portion 41 is disposed within the drive guide cavity 45 and is movable vertically along the drive guide cavity 45 .

[0068] Specifically, the drive barrel seat 43 is fixedly disposed at a position corresponding to the auxiliary door 03 and the drive guide piston 40, and a hollow cavity is provided in the drive barrel seat 43 to form a drive guide cavity 45. The drive piston portion 41 is movably disposed in the drive guide cavity 45 and can slide in the vertical direction along the drive guide cavity 45.

[0069] As shown in FIG8 , the door assembly optionally further includes a drive spring 44. A first end of the drive spring 44 is connected to the lower end surface of the drive piston portion 41, and a second end of the drive spring 44 is connected to the bottom wall surface of the drive guide cavity 45. When the drive spring 44 is in a natural state, the drive spring 44 can push the drive piston portion 41 upward.

[0070] As shown in Figure 8, in some embodiments, a handle seat 310 is provided at the position corresponding to the handle 04 on the secondary door 03. The handle seat 310 is provided with a handle guide cavity. The handle 04 is provided with a sliding portion 410 inserted into the handle guide cavity. The handle 04 can slide along the handle guide cavity toward or away from the door body via the sliding portion 410.

[0071] Specifically, the handle seat 310 is arranged on the side of the auxiliary door 03 away from the main door 02, and the sliding portion 410 of the handle 04 is inserted into the handle guide cavity. The guiding direction of the handle guide cavity is limited to approaching or away from the auxiliary door 03.

[0072] As shown in Figure 8, optionally, the two ends of the handle 04 are respectively provided with sliding parts 410, and the positions of the auxiliary door 03 corresponding to the two sliding parts 410 are respectively provided with two handle seats 310. This arrangement can improve the stability of the handle 04 when sliding.

[0073] As shown in Figures 8 and 9, the driving guide piston 40 is optionally further provided with a second connecting rod 422, which is provided on the side of the driving piston portion 41 facing the transmission assembly 50. The transmission assembly 50 is in driving connection with the driving connecting rod.

[0074] As shown in Figures 8 and 9, the driving guide piston 40 is optionally disposed below the transmission assembly 50, and one end of the second connecting rod 422 is fixedly disposed on the upper end surface of the driving piston portion 41, and the second end of the second connecting rod 422 extends upward. The transmission assembly 50 is connected to the second end of the second connecting rod 422.

[0075] As shown in FIG2 , in some embodiments, the door assembly further includes a transmission assembly 50. The transmission assembly 50 is used to transmit and connect the clamping block assembly 20 to the driving guide piston 40. The driving guide piston 40 can move in a vertical direction and drive the clamping block assembly 20 to clamp or release the auxiliary door hinge shaft 11 through the transmission assembly 50.

[0076] Specifically, the clamping block assembly 20 is connected to the driving guide piston 40 through the transmission assembly 50, so that the driving guide piston 40 drives the first clamping block 21 and the second clamping block 22 to move synchronously and clamp or release the auxiliary door hinge shaft 11.

[0077] As shown in Figures 3 to 6, the door body assembly may further include a locking guide piston 30 and a gear set 70. The locking guide piston 30 includes a locking piston portion 31 corresponding to the auxiliary door hinge shaft 11. The gear set 70 rotatably connects the first clamping block 21 and the second clamping block 22 to the auxiliary door 03. The locking guide piston 30 can move in the vertical direction and drive the first clamping block 21 and the second clamping block 22 to rotate toward or away from the auxiliary door hinge shaft 11, so that the first clamping block 21 and the second clamping block 22 clamp or release the auxiliary door hinge shaft 11.

[0078] Specifically, the locking guide piston 30 is movably arranged on the auxiliary door 03, and the locking piston portion 31 is arranged corresponding to the auxiliary door hinge shaft 11. The first clamping block 21 and the second clamping block 22 are respectively rotatably arranged on the auxiliary door 03 through the gear set 70, and the first clamping block 21 and the second clamping block 22 are relatively arranged on both sides of the auxiliary door hinge shaft 11. The locking piston portion 31 is transmission-connected to the first clamping block 21 and the second clamping block 22 to simultaneously drive the first clamping block 21 and the second clamping block 22 to rotate toward or away from the auxiliary door hinge shaft 11. The driving guide piston 40 is transmission-connected to the locking guide piston 30. The driving guide piston 40 can drive the locking guide piston 30 to move in the vertical direction.

[0079] As shown in FIG. 4 and FIG. 5 , optionally, the locking guide piston 30 and the gear set 70 are arranged below the auxiliary door hinge shaft 11 .

[0080] As shown in Figures 4 and 5, in some embodiments, the locking piston portion 31 is provided with a locking guide groove 35, and the first clamping block 21 and the second clamping block 22 are slidably disposed in the locking guide groove 35. When the locking guide piston 30 moves, the locking guide groove 35 can drive the first clamping block 21 and the second clamping block 22 to rotate.

[0081] Specifically, the middle portion of the locking guide slot 35 corresponds to the auxiliary door hinge axis 11, and both the left and right halves of the locking guide slot 35 are curved and extended downward. The first clamp 21 is slidably mounted in the left half of the locking guide slot 35, and the second clamp 22 is slidably mounted in the right half of the locking guide slot 35. The curvature of the left half of the locking guide slot 35 corresponds to the rotation trajectory of the first clamp 21, while the curvature of the right half of the locking guide slot 35 corresponds to the rotation trajectory of the second clamp 22, thereby preventing the locking guide slot 35 from interfering with the rotation of the first and second clamps 21 and 22.

[0082] When the locking guide piston 30 moves upward, the locking guide groove 35 can simultaneously push the first clamping block 21 and the second clamping block 22 to rotate toward the middle of the locking guide groove 35 until the first clamping block 21 and the second clamping block 22 clamp the auxiliary door hinge shaft 11, as shown in Figure 5. When the locking guide piston 30 moves downward, the locking guide groove 35 can simultaneously push the first clamping block 21 and the second clamping block 22 to rotate away from the middle, so that the first clamping block 21 and the second clamping block 22 release the auxiliary door hinge shaft 11, as shown in Figure 4.

[0083] As shown in FIG6 , in some embodiments, the gear set 70 includes a first gear 71 and a second gear 72. The first gear 71 includes a first central shaft 712 rotatably connected to the auxiliary door 03 and a first eccentric shaft 711 rotatably connected to the first clamping block 21. The second gear 72 includes a second central shaft rotatably connected to the auxiliary door 03 and a second eccentric shaft 721 rotatably connected to the second clamping block 22. The first gear 71 and the second gear 72 are meshedly connected.

[0084] Specifically, the first gear 71 is rotatably mounted on the auxiliary door 03 at a position corresponding to the first clamping block 21, and the second gear 72 is rotatably mounted on the auxiliary door 03 at a position corresponding to the second clamping block 22. A first central axis 712 and a first eccentric shaft 711 are disposed on opposite sides of the first gear 71. The first gear 71 is rotatably mounted on the auxiliary door 03 via the first central axis 712 and is rotatably connected to the first clamping block 21 via the first eccentric shaft 711. Thus, when the locking guide drives the first clamping block 21 to move, the first clamping block 21 can simultaneously rotate about the first eccentric shaft 711 and the first central axis 712. The second central axis and the second eccentric shaft 721 are disposed on opposite sides of the second gear 72. The second gear 72 is rotatably mounted on the auxiliary door 03 via the second central axis and is rotatably connected to the second clamping block 22 via the second eccentric shaft 721. Thus, when the locking guide drives the second clamping block 22 to move, the second clamping block 22 can simultaneously rotate about the second eccentric shaft 721 and the second central axis. With such arrangement, the locking guide groove 35 can drive the first clamping block 21 and the second clamping block 22 to rotate toward or away from the auxiliary door hinge shaft 11 .

[0085] At the same time, meshing the first gear 71 and the second gear 72 allows the first clamp 21 and the second clamp 22 to move synchronously to avoid the first clamp 21 and the second clamp 22 being unable to clamp or release the auxiliary door hinge shaft 11 at the same time.

[0086] As shown in Figures 4 and 5, in some embodiments, the door assembly further includes a locking barrel seat 33. The locking barrel seat 33 is provided with a locking guide cavity 36. The locking piston portion 31 is disposed in the locking guide cavity 36 and can move in a vertical direction along the locking guide cavity 36.

[0087] Specifically, the locking barrel seat 33 is fixedly disposed at a position corresponding to the auxiliary door 03 and the auxiliary door hinge shaft 11, and a hollow cavity is provided in the locking barrel seat 33 to form a locking guide cavity 36. The locking piston portion 31 is movably disposed in the locking guide cavity 36 and can slide in the vertical direction along the locking guide cavity 36.

[0088] Optionally, an opening is provided at a position of the locking guide cavity 36 corresponding to the auxiliary door hinge shaft 11 , and the auxiliary door hinge shaft 11 can be inserted into the locking guide cavity 36 through the opening.

[0089] In some embodiments, a hinge shaft opening communicating with the locking guide groove 35 is provided at a position corresponding to the locking piston portion 31 and the auxiliary door hinge shaft 11. The auxiliary door hinge shaft 11 can be inserted into the locking guide groove 35 through the hinge shaft opening.

[0090] Specifically, the upper wall surface of the locking piston portion 31 is provided with a hinge shaft opening, through which the auxiliary door hinge shaft 11 can be inserted into the locking guide groove 35. The size of the hinge shaft opening is greater than or equal to the size of the auxiliary door hinge shaft 11 to prevent the auxiliary door hinge shaft 11 from interfering with the vertical movement of the locking guide piston 30.

[0091] In actual application, the size of the hinge shaft opening is larger than the size of the auxiliary door hinge shaft 11 to ensure the smooth movement of the locking guide piston 30.

[0092] As shown in Figures 4 and 5 , in some embodiments, the door assembly further includes an unlocking spring. This unlocking spring is disposed within the locking guide cavity 36 and below the locking piston 31. The two ends of the unlocking spring are elastically connected to the bottom wall of the locking guide cavity 36 and the locking piston 31, respectively, to propel the locking piston 31 upward along the locking guide cavity 36.

[0093] Specifically, the first end of the unlocking spring 34 is connected to the lower end surface of the locking piston portion 31, and the second end of the unlocking spring 34 is connected to the bottom wall surface of the locking guide cavity 36. When the unlocking spring 34 is in its natural state, the unlocking spring 34 can push the locking piston portion 31 upward, thereby driving the first clamping block 21 and the second clamping block 22 to rotate away from the auxiliary door hinge shaft 11 to release the auxiliary door hinge shaft 11.

[0094] In some embodiments, the locking barrel seat 33 is provided with gear shaft openings at positions corresponding to the first eccentric shaft 711 and the second eccentric shaft 721. The first eccentric shaft 711 and the second eccentric shaft 721 can respectively pass through the gear shaft openings and be rotatably connected to the first clamping block 21 and the second clamping block 22. The shape of the gear shaft openings is set to correspond to the rotation trajectory of the first eccentric shaft 711 and the second eccentric shaft 721.

[0095] Specifically, a first gear shaft opening is provided at a position on the locking barrel seat 33 corresponding to the first eccentric shaft 711. The first eccentric shaft 711 can extend through the first gear shaft opening into the locking guide slot 35 and be rotatably connected to the first clamping block 21. Similarly, a second gear shaft opening is provided at a position on the locking barrel seat 33 corresponding to the second eccentric shaft 721. The second eccentric shaft 721 can extend through the second gear shaft opening into the locking guide slot 35 and be rotatably connected to the second clamping block 22. The shape of the first gear shaft opening corresponds to the rotation trajectory of the first eccentric shaft 711 to prevent the first gear shaft opening from interfering with the rotation of the first eccentric shaft 711. The shape of the second gear shaft opening corresponds to the rotation trajectory of the second eccentric shaft 721 to prevent the second gear shaft opening from interfering with the rotation of the second eccentric shaft 721.

[0096] Optionally, the locking guide piston 30 further includes a locking connecting rod 32. The lower end surface of the locking barrel seat 33 is provided with an opening. The first end of the locking connecting rod 32 is fixedly mounted on the lower end surface of the locking piston portion 31. The second end of the locking connecting rod 32 extends downward and out of the locking barrel seat 33 through the opening. A transmission assembly 50 is connected to the second end of the locking connecting rod 32 to provide a transmission connection between the drive assembly and the locking guide piston 30.

[0097] As shown in Figure 3, in some embodiments, the transmission assembly 50 includes a first pulley 51, a second pulley 52, and a transmission rope 53. The first pulley is rotatably mounted on the auxiliary door. The second pulley is rotatably mounted on the auxiliary door at a position corresponding to the drive assembly. The transmission rope is wound around the first and second pulleys and is used to transmit the clamp assembly 20 to the drive guide piston 40.

[0098] Specifically, a first pulley 51 is rotatably mounted below the locking guide piston 30, and a second pulley 52 is rotatably mounted above the driving guide piston 40, with the first pulley 51 positioned to the left of the first pulley 51. A transmission rope 53 is wound around the first pulley 51 and the second pulley 52, with its ends connected to the locking connecting rod 32 of the locking guide piston 30 and the second connecting rod 422 of the driving guide piston 40, respectively. Thus, when the driving guide piston 40 moves upward, the transmission rope 53 drives the locking guide piston 30 to move upward synchronously; when the driving guide piston 40 moves downward, the transmission rope 53 drives the locking guide piston 30 to move downward synchronously.

[0099] In actual use, the user pulls handle 04, causing it to slide along the handle guide cavity away from the secondary door 03, driving the linkage guide piston 600 to move synchronously. The linkage guide piston 600 then drives the drive guide piston 40 downward, causing the drive guide piston 40 to drive the locking guide piston 30 downward synchronously via the transmission rope 53. At this point, the locking guide piston 30 drives the first clamping block 21 and the second clamping block 22 to rotate toward the secondary door hinge shaft 11, clamping the secondary door hinge shaft 11 and locking the secondary door 03 and the secondary door hinge shaft 11. If the user releases handle 04, the linkage spring, drive spring 44, and unlocking spring 34 respectively push the linkage guide piston 600, drive guide piston 40, and locking guide piston 30 in opposite directions, causing the locking guide piston 30 to rotate the first clamping block 21 and the second clamping block 22 away from the secondary door hinge shaft 11 and release the secondary door hinge shaft 11, thereby unlocking the secondary door 03 and the secondary door hinge shaft 11.

[0100] Optionally, the stroke of the driving guide piston 40 is the driving stroke H1, and the stroke of the locking guide piston 30 is the locking stroke H2, wherein H1=H2.

[0101] Optionally, the stroke of the handle 04 is a pulling stroke L, and the angle between the linkage guide groove 64 and the horizontal plane is a linkage angle α, where L=H1 / tanα.

[0102] Optionally, a stop surface is provided on the auxiliary door hinge shaft 11 at a position corresponding to the clamping block assembly 20. When the first clamping block 21 and the second clamping block 22 clamp the auxiliary door hinge shaft 11, the first clamping block 21 and the second clamping block 22 are clamped on the stop surface. A flat surface is provided at the position corresponding to the auxiliary door hinge shaft 11 and the first clamping block 21 and the second clamping block 22 to form the stop surface. This arrangement can improve the stability of the first clamping block 21 and the second clamping block 22 in clamping the auxiliary door hinge shaft 11.

[0103] As shown in Figure 1 , the embodiment of the present disclosure further provides a refrigeration device comprising a housing 01 and the aforementioned door assembly, wherein a main door 02 is rotatably disposed on the housing 01 .

[0104] Specifically, the refrigeration equipment using the door body assembly provided in this application can lock the secondary door 03 to the main door 02 without providing a separate door lock on the door body, thereby reducing the thickness of the door body and improving the user experience.

[0105] Optionally, the refrigeration device is a refrigerator.

[0106] 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.

[0107] 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, comprising: Main gate; The auxiliary door is rotatably arranged on the main door through an auxiliary door hinge, wherein the auxiliary door hinge comprises an auxiliary door hinge shaft arranged on the auxiliary door; The clamp block assembly comprises a first clamp block and a second clamp block, and the first clamp block and the second clamp block are arranged on two sides of the auxiliary door hinge shaft opposite to each other.

2. The door assembly according to claim 1, wherein: The door assembly also includes: Handle, movably arranged on the auxiliary door; A driving guide piston is movably arranged at a position corresponding to the auxiliary door and the handle, and the driving guide piston is drivingly connected to the clamping block assembly; Among them, the handle is connected to the driving guide piston through a linkage assembly; the handle can drive the driving guide piston to move in the vertical direction through the linkage assembly, and then drive the first clamping block and the second clamping block to clamp or release the auxiliary door hinge shaft.

3. The door assembly according to claim 2, wherein: The linkage components include: A linkage guide piston is movably arranged at a position corresponding to the auxiliary door and the handle, and comprises a linkage piston portion transmission-connected to the driving guide piston and a linkage connecting rod connected to the handle; The handle can drive the guide piston to move vertically through the linkage guide piston.

4. The door assembly according to claim 3, wherein: The linkage piston part is tilted and provided with a linkage guide groove; and, A first connecting rod is provided on one side of the driving guide piston extending toward the linkage guide groove; Wherein, the first connecting rod is slidably connected to the linkage guide groove.

5. The door assembly according to claim 4, wherein: The linkage guide groove comprises a first end close to the handle and a second end away from the handle, and the height of the first end of the linkage guide groove is higher than the height of the second end.

6. The door assembly according to claim 3, wherein: The linkage components also include: A linkage bucket seat is provided with a linkage guide cavity; The linkage piston part is arranged in the linkage guide cavity, and the linkage piston part can move in a horizontal direction along the linkage guide cavity.

7. The door assembly according to any one of claims 2 to 6, wherein: The driving guide piston includes a driving piston portion; the door body assembly also includes: A driving bucket seat is provided with a driving guide cavity; The driving piston portion is arranged in the driving guide cavity, and the driving piston portion can be moved vertically along the driving guide cavity. Movement in direction.

8. The door assembly according to any one of claims 2 to 7, wherein: A handle seat is provided at a position of the auxiliary door corresponding to the handle, and the handle seat is provided with a handle guide cavity; and, The handle is provided with a sliding portion inserted into the handle guide cavity; The handle can slide along the handle guide cavity toward or away from the door body through the sliding portion.

9. The door assembly according to any one of claims 2 to 6, wherein: The door assembly also includes: A transmission assembly, used for transmission connecting the clamping block assembly to the driving guide piston; The driving guide piston can move in the vertical direction and drive the clamping block assembly to clamp or release the auxiliary door hinge shaft through the transmission assembly.

10. The door assembly according to claim 9, wherein: The transmission components include: A first pulley is rotatably disposed on the auxiliary door; A second pulley is rotatably disposed at a position corresponding to the auxiliary door and the driving assembly; and, The transmission rope is wound around the first pulley and the second pulley and is used to transmit and connect the clamping block assembly to the driving guide piston.

11. The door assembly according to any one of claims 1 to 8, wherein: The door assembly also includes: A locking guide piston, comprising a locking piston portion arranged corresponding to the auxiliary door hinge shaft; A gear set, rotatably connecting the first clamping block and the second clamping block to the auxiliary door; Among them, the locking guide piston can move in the vertical direction and drive the first clamp block and the second clamp block to rotate towards or away from the auxiliary door hinge shaft, so that the first clamp block and the second clamp block clamp or release the auxiliary door hinge shaft.

12. The door assembly according to claim 11, wherein: The locking piston part is provided with a locking guide groove, and the first clamping block and the second clamping block are slidably arranged in the locking guide groove; Wherein, when the locking guide piston moves, the locking guide groove can drive the first clamping block and the second clamping block to rotate.

13. The door assembly according to claim 11, wherein: The gear set includes: A first gear includes a first central shaft rotatably connected to the auxiliary door and a first eccentric shaft rotatably connected to the first clamping block; and, The second gear includes a second central shaft rotatably connected to the auxiliary door and a second eccentric shaft rotatably connected to the second clamping block; The first gear and the second gear are meshingly connected.

14. The door assembly according to claim 13, wherein: Also includes: A locking bucket seat is provided with a locking guide cavity; The locking piston part is arranged in the locking guide cavity, and the locking piston part can move in the vertical direction along the locking guide cavity.

15. The door assembly according to claim 14, wherein: A hinge shaft opening communicating with the locking guide groove is provided at a position of the locking piston portion corresponding to the auxiliary door hinge shaft; Among them, the auxiliary door hinge shaft can be inserted into the locking guide groove through the hinge shaft opening.

16. The door assembly according to claim 14, wherein: Also includes: An unlocking spring is disposed in the locking guide cavity and is located below the locking piston portion; Wherein, two ends of the unlocking spring are elastically connected to the bottom wall surface of the locking guide cavity and the locking piston part respectively, so as to push the locking piston part to move upward along the locking guide cavity.

17. The door assembly according to claim 14, wherein: The locking barrel seat is provided with gear shaft openings at positions corresponding to the first eccentric shaft and the second eccentric shaft, respectively. The first eccentric shaft and the second eccentric shaft can pass through the gear shaft openings and be rotatably connected to the first clamp block and the second clamp block respectively. The shape of the gear shaft opening is set corresponding to the rotation tracks of the first eccentric shaft and the second eccentric shaft.

18. The door assembly according to any one of claims 11 to 17, wherein: Also includes: The transmission assembly is used to transmit and connect the locking guide piston to the driving assembly.

19. The door assembly according to claim 18, wherein: The transmission components include: A first pulley is rotatably arranged at a position corresponding to the auxiliary door and the locking guide piston; A second pulley is rotatably disposed at a position corresponding to the auxiliary door and the driving assembly; and, The transmission rope is wound around the first pulley and the second pulley, and two ends of the transmission rope are respectively connected to the driving component and the locking guide piston.

20. A refrigeration device comprising: Box; and, The door assembly according to any one of claims 1 to 19; Wherein, the main door is rotatably arranged on the box body.

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