Refrigerator

Abstract

The embodiment of the utility model provides a refrigerator, belongs to the technical field of household appliances, and aims to solve the technical problems that in the related technology, a gap is likely to occur between a door body and a refrigerator body, and the sealing performance of a containing cavity is poor. The refrigerator comprises a refrigerator body, a door body and a gravity self-closing structure. The gravity self-closing structure comprises a fixed part and a movable part which are matched with each other, the fixed part is arranged on the refrigerator body, and the movable part is arranged on the door body; the movable part is provided with an abutting part, the abutting part faces the fixed part, and a first track groove and a second track groove are formed in the abutting part; the fixing piece is provided with a first contact part and an inclined part which are connected, the first end of the inclined part is connected with the first contact part, and the second end of the inclined part inclines downwards; the fixing piece is provided with a first hinge shaft and a second hinge shaft, the first hinge shaft is arranged in the first track groove in a relatively movable mode, and the second hinge shaft is arranged in the first track groove in a relatively movable mode. According to the refrigerator, the gap between the door body and the refrigerator body can be reduced, and the sealing performance of the containing cavity is improved.

Description

[0001] This application is a divisional application of the patent application with the application number 202323421178.7 and the application title "Refrigerator" submitted to the China National Intellectual Property Administration on December 14, 2023. Technical Field

[0002] Embodiments of the present application relate to the technical field of household appliances, and particularly to a refrigerator. Background Art

[0003] A refrigerator is a common household appliance that can keep food or other items at a constant low temperature. The refrigerator includes a box body and a door body. The box body is formed with a receiving cavity for accommodating food or other items. The door body is movably arranged on the box body to close or open the receiving cavity through the door body. However, when the door body is closed to seal the receiving cavity, a gap is likely to appear between the door body and the box body, and the sealing performance of the receiving cavity is poor. Utility Model Content

[0004] Embodiments of the present application provide a refrigerator, which can solve the technical problem that a gap is likely to appear between the door body and the box body, and the sealing performance of the receiving cavity is poor.

[0005] Embodiments of the present application provide a refrigerator, including:

[0006] A box body, the box body is formed with a receiving cavity;

[0007] A door body, the door body is rotatably arranged on the box body to close or open the receiving cavity;

[0008] A gravity self-closing structure, arranged at the lower end of the door body. The gravity self-closing structure includes a cooperating fixed part and a movable part. The fixed part is arranged on the box body, and the movable part is arranged on the door body;

[0009] The movable part is provided with an abutting part, the abutting part faces the fixed part, and the abutting part is formed with a first track groove and a second track groove;

[0010] The fixed part has a connected first contact part and an inclined part. The first end of the inclined part is connected to the first contact part, and the second end of the inclined part slopes downward; the fixed part is provided with a first hinge shaft and a second hinge shaft. The first hinge shaft is relatively movably arranged in the first track groove, and the second hinge shaft is relatively movably arranged in the first track groove;

[0011] During the process of the door body rotating and closing, the abutting part abuts against the first contact part and the inclined part in sequence. The first hinge shaft moves relative to the first track groove along the extension direction of the first track groove, and the second hinge shaft moves relative to the second track groove along the extension direction of the second track groove.

[0012] In the refrigerator according to the embodiment of the present application, since the door body has a certain gravity, during the process of the door body rotating and opening, it is necessary to overcome the gravity of the door body so that the door body can drive the abutting portion to move from the second end of the inclined portion to the first end of the inclined portion, thereby playing a certain limiting role on the abutting portion through the inclined portion and reducing the possibility of the abutting portion moving; and, during the process of the door body rotating and closing, when the abutting portion abuts against the inclined portion, the abutting portion can move towards the second end of the inclined portion under the action of the gravity of the door body, thereby making the process of the door body moving from the inclined portion to the second contact portion more convenient. Moreover, one of the first hinge shaft and the second hinge shaft is located at the first contact portion, and the other of the first hinge shaft and the second hinge shaft is located between the first contact portion and the inclined portion. When the abutting portion slides on the surface of the inclined portion, the sliding direction of the abutting portion is close to parallel to the arrangement direction of the first hinge shaft and the second hinge shaft, so that the sliding process of the abutting portion is more stable. And, when closing the door body to enclose the accommodation cavity, the possibility of a gap appearing between the door body and the box body can be reduced, and the sealing performance of the accommodation cavity can be improved. Furthermore, by arranging the first track groove and the second track groove on the abutting portion, the abutting portion can be reused to form the first track groove and the second track groove, so as to simplify the structure of the movable member and is beneficial to improving the structural compactness of the gravity self-closing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0014] Figure 1 It is a schematic structural diagram of a hinge structure when the upper fitting and the lower fitting are attached in the related art;

[0015] Figure 2 It is a schematic structural diagram of a hinge structure when the upper fitting and the lower fitting form an angle in the related art;

[0016] Figure 3 It is a schematic structural diagram of a movable member in a gravity self-closing structure in the related art;

[0017] Figure 4 It is a schematic structural diagram of a fixed member in a gravity self-closing structure in the related art;

[0018] Figure 5 It is a schematic structural diagram of a fixed member with some grooves filled in the gravity self-closing structure according to the embodiment of the present application;

[0019] Figure 6 It is a perspective view of the refrigerator according to the embodiment of the present application;

[0020] Figure 7 Top view of the refrigerator according to the embodiment of the present application;

[0021] Figure 8 Schematic diagram of the installation position of the gravity self - closing structure of the refrigerator according to the embodiment of the present application;

[0022] Figure 9 Schematic diagram of the structure of the gravity self - closing structure of the refrigerator according to the embodiment of the present application;

[0023] Figure 10 Schematic diagram of the structure of the gravity self - closing structure of the refrigerator from another perspective according to the embodiment of the present application;

[0024] Figure 11 Schematic diagram of the hinge assembly located at the upper end of the door body of the refrigerator according to the embodiment of the present application;

[0025] Figure 12 Schematic diagram of the structure of the fixing member and the moving member in the gravity self - closing structure of the refrigerator in another embodiment according to the embodiment of the present application;

[0026] Figure 13 Schematic diagram of the structure of the fixing member and the moving member when the abutting portion abuts against the first contact portion in the gravity self - closing structure of the refrigerator according to the embodiment of the present application;

[0027] Figure 14 Schematic diagram of the structure of the fixing member and the moving member when the abutting portion abuts against the inclined portion in the gravity self - closing structure of the refrigerator according to the embodiment of the present application;

[0028] Figure 15 Schematic diagram of the structure of the fixing member and the moving member when the abutting portion abuts against the second contact portion in the gravity self - closing structure of the refrigerator according to the embodiment of the present application;

[0029] Figure 16 Schematic diagram of the relative positions of the positioning central axis and the guiding central axis when the door body of the refrigerator according to the embodiment of the present application is opened to the first set angle in the gravity self - closing structure;

[0030] Figure 17 Schematic diagram of the relative positions of the positioning central axis and the guiding central axis when the door body of the refrigerator according to the embodiment of the present application is opened to the second set angle in the gravity self - closing structure;

[0031] Figure 18 Schematic diagram of the relative positions of the positioning central axis and the guiding central axis when the door body of the refrigerator according to the embodiment of the present application is opened to the third set angle in the gravity self - closing structure;

[0032] Figure 19 Schematic diagram of the relative positions of the positioning central axis and the guiding central axis when the door body of the refrigerator according to the embodiment of the present application fits against the box body in the gravity self - closing structure;

[0033] Figure 20 Schematic diagram of the relative positions of the positioning central axis and the guiding central axis when the opening angle of the door body is the first set angle in the gravity self-closing structure of the refrigerator according to another embodiment of the present application;

[0034] Figure 21 Schematic diagram of the relative positions of the positioning central axis and the guiding central axis when the opening angle of the door body is the second set angle in the gravity self-closing structure of the refrigerator according to another embodiment of the present application;

[0035] Figure 22 Schematic diagram of the relative positions of the positioning central axis and the guiding central axis when the opening angle of the door body is the third set angle in the gravity self-closing structure of the refrigerator according to another embodiment of the present application;

[0036] Figure 23 Schematic diagram of the relative positions of the positioning central axis and the guiding central axis when the door body is attached to the box body in the gravity self-closing structure of the refrigerator according to another embodiment of the present application;

[0037] Figure 24 Schematic diagram of the structure of the locking hook and the stop portion of the refrigerator according to the embodiment of the present application;

[0038] Figure 25 Schematic diagram of the structure of the locking hook and the movable member of the refrigerator according to the embodiment of the present application;

[0039] Figure 26 Schematic diagram of the structure of the fixing member with the second contact portion in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0040] Figure 27 Schematic diagram of the structure of the fixing member in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0041] Figure 28 Schematic diagram of the structure of the fixing member in the gravity self-closing structure of the refrigerator according to another embodiment of the present application;

[0042] Figure 29 Schematic diagram of the structure of the movable member in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0043] Figure 30 Schematic diagram of the structure of the movable member in the gravity self-closing structure of the refrigerator according to another embodiment of the present application;

[0044] Figure 31 Schematic diagram of the structure of the movable member with multiple abutting portions in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0045] Figure 32 Schematic diagram of the structure of the movable member with multiple abutting portions in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0046] Figure 33 Schematic diagram of the structure of the movable part in another embodiment of the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0047] Figure 34 Schematic diagram of the structure of the movable part in another embodiment of the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0048] Figure 35 Schematic diagram of the structure of the movable part with balls in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0049] Figure 36 Schematic diagram of the structure of the movable part with rollers in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0050] Figure 37 Schematic diagram of the structure of the roller-type movable part in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0051] Figure 38 Schematic diagram of the structure in which the fixing part is installed on the hinge plate in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0052] Figure 39 Schematic diagram of the structure in which the adjusting part adjusts the height of the fixing part in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0053] Figure 40 Schematic diagram of the structure of the adjusting plate in the gravity self-closing structure of the refrigerator according to the embodiment of the present application;

[0054] Figure 41 Schematic diagram of the structure of the adjusting plate and the adjusting part in the gravity self-closing structure of the refrigerator according to the embodiment of the present application. Detailed implementation manner

[0055] In the related art, a refrigerator includes a box body and a door body. The box body forms a receiving cavity for accommodating food or other items. The door body is movably arranged on the box body to close or open the receiving cavity through the door body. Exemplarily, the door body can be rotatably arranged on the box body through a rotating structure. When the door body fits against the box body, the door body closes the receiving cavity. When an included angle is formed between the door body and the box body, the door body opens the receiving cavity to take or put food or other items through the receiving cavity.

[0056] When the door body is rotated to close the receiving cavity through the door body, the door body moves towards the receiving cavity. When the door body fits against the surface of the box body, due to the influence of the air pressure change in the receiving cavity, the door body is easily bounced off from the surface of the box body, so that a gap is formed between the door body and the surface of the box body, thereby affecting the sealing performance of the receiving cavity.

[0057] Exemplarily, taking the hinge structure that can be applied to the opening and closing of a door body as an example, the rotation structure of the door body will be described. Refer to Figure 1 and Figure 2 , the hinge structure may include a pivot 1, and an upper fitting 2 and a lower fitting 3 that cooperate with each other. Among them, both the upper fitting 2 and the lower fitting 3 are provided with inclined slopes; during the process of adjusting the upper fitting 2 and the lower fitting 3 of the hinge structure to close the door body, the lower fitting 3 is relatively fixed to the pivot 1, the upper fitting 2 rotates around the pivot 1, and the upper fitting 2 can move from the top end of the slope of the lower fitting 3 to the bottom end of the slope of the lower fitting 3; during the process of adjusting the upper fitting 2 and the lower fitting 3 of the hinge structure to open the door body, the lower fitting 3 is relatively fixed to the pivot 1, the upper fitting 2 rotates around the pivot 1, and the upper fitting 2 can move from the bottom end of the slope of the lower fitting 3 to the top end of the slope of the lower fitting 3.

[0058] It is easy to understand that during the process of opening the door body, the upper fitting 2 rotates around the pivot 1, and the upper fitting 2 needs to overcome gravity and move from the bottom end of the slope of the lower fitting 3 to the top end of the slope of the lower fitting 3, making the process of opening the door body more laborious, so that the closed state of the door body can be made more airtight; when the above hinge structure is applied to the rotation structure of a refrigerator, the upper fitting 2 of the hinge structure can be connected to the door body of the refrigerator, the lower fitting 3 of the hinge structure is connected to the refrigerator cabinet, and the pivot 1 of the hinge structure is reused to form the rotation axis of the refrigerator door body, so that the refrigerator door body can rotate relative to the cabinet around the pivot 1 of the hinge structure to realize the opening and closing of the door body, and the gap between the door body and the cabinet can be reduced, improving the sealing performance of the accommodation cavity.

[0059] Although the above hinge structure can relatively skillfully reduce the gap between the door body and the cabinet through the mutual cooperation of the upper fitting and the lower fitting; however, when the refrigerator is set as an embedded refrigerator, the embedded refrigerator is usually provided with at least two rotation axes, and during the opening and closing process of the embedded refrigerator door body, the door body does not rotate around a single rotation axis alone, but realizes the rotation process of the door body through the mutual cooperation of at least two rotation axes, which makes the above hinge structure unable to be used to form the rotation structure of the embedded refrigerator, and the pivot of the hinge structure naturally cannot be used to form the rotation axis of the embedded refrigerator.

[0060] Refer to Figure 3 and Figure 4, in the built-in refrigerator 1, the refrigerator 1 may include a gravity self-closing structure. The gravity self-closing structure includes a cooperating fixed member 300 and a movable member 400. The movable member 400 is provided with a first track groove 140 and a second track groove 150. The fixed member 300 is correspondingly provided with a first hinge shaft 160 and a second hinge shaft 170. The first hinge shaft 160 is relatively movably disposed in the first track groove 140, and the second hinge shaft 170 is relatively movably disposed in the second track groove 150. The fixed member 300 is provided with a groove, and a connected first inclined portion 301 and a second inclined portion 302 are disposed in the groove. The second end of the first inclined portion 301 inclines upward, and the second end of the second inclined portion 302 inclines downward. The movable member 400 is provided with an abutting portion 410, and the abutting portion 410 is used for abutting against the first inclined portion 301 and the second inclined portion 302.

[0061] By providing the gravity self-closing structure, during the process of the door body 30 rotating and closing, the first hinge shaft 160 can be relatively movably disposed in the first track groove 140, the second hinge shaft 170 can be relatively movably disposed in the second track groove 150, and the abutting portion 410 can move from the surface of the fixed member 300 to the first end of the first inclined portion 301 and move along the first end of the first inclined portion 301 to the second end of the first inclined portion 301. The movable member 400 drives the door body 30 to move upward through the abutting portion 410. And the abutting portion 410 moves from the second end of the first inclined portion 301 to the first end of the second inclined portion 302 and moves along the first end of the second inclined portion 302 to the second end of the second inclined portion 302. The movable member 400 drives the door body 30 to move downward through the abutting portion 410, so that the abutting portion 410 can move from the second end of the second inclined portion 302 to the surface of the fixed member 300 facing the movable member 400, and the abutting portion 410 can move from the side of the first inclined portion 301 away from the second inclined portion 302 to the side of the second inclined portion 302 away from the first inclined portion 301.

[0062] The door body 30 has a certain gravity. During the process of the door body 30 rotating and opening, it is necessary to overcome the gravity of the door body 30 so that the door body 30 can drive the abutting portion 410 to move from the second end of the second inclined portion 302 to the first end of the second inclined portion 302, thereby playing a certain limiting role on the abutting portion 410 through the second inclined portion 302 and reducing the possibility of the abutting portion 410 moving. During the process of the door body 30 rotating and closing, when the abutting portion 410 abuts against the second inclined portion 302, the abutting portion 410 can move toward the second end of the second inclined portion 302 under the action of the gravity of the door body 30, so that the process of the door body 30 moving to the side of the second inclined portion 302 away from the first inclined portion 301 is more convenient.

[0063] It is easy to understand that although the problem of the sealing of the refrigerator 1 accommodating cavity can be solved by setting the above-mentioned gravity self-closing structure, during the rotation opening and rotation closing of the door body 30 of the above-mentioned refrigerator 1, the door body 30 not only needs to complete the rotation process in the horizontal direction, but also needs to move upward in the vertical direction and then move downward in the vertical direction under the drive of the movable part 400. The door body 30 is prone to produce a certain oscillation, which makes the user easily feel a certain sense of frustration, affecting the user's experience.

[0064] Furthermore, during the rotational opening and closing of the refrigerator door 30, since the door 30 not only needs to complete the rotation process in the horizontal direction but also needs to complete the movement process in the vertical direction, the first hinge shaft 160 and the second hinge shaft 170 need to bear the force component from the horizontal direction and the force component from the vertical direction to drive the door 30 to realize the above-mentioned movement process; and in order to ensure the gravity self-closing effect of the refrigerator door 30, the gravity of the refrigerator door 30 is usually large, which also aggravates the burden on the first hinge shaft 160 and the second hinge shaft 170 to a certain extent, making the first hinge shaft 160 and the second hinge shaft 170 more prone to bending and deformation, thereby affecting the normal use of the door 30.

[0065] In view of this, the inventors have discovered through research that when the door body is in a closed state, the abutment portion is arranged on the surface of the second inclined portion, or the abutment portion is arranged on the side of the second inclined portion away from the first inclined portion, so as to reduce the possibility of the abutment portion moving toward the first inclined portion through the second inclined portion inclined downward, that is, the second inclined portion is an important structure that affects the gravity self-closing effect of the door; and although the provision of the first inclined portion can ensure that the height of the door body on the side of the first inclined portion away from the second inclined portion is flush with the height of the door body on the side of the second inclined portion away from the first inclined portion, so that the door body can maintain the same height during most of the process of rotating to open or rotate to close, the first inclined portion will not affect the gravity self-closing effect of the door body.

[0066] Reference Figure 5 It can be seen that part of the groove above the first inclined portion can be filled to remove the first inclined portion, so that the abutment portion of the movable part can move directly through the surface of the fixed part to the surface of the second inclined portion, so that the door body has only an upward movement during the rotation opening process, and the door body has only a downward movement during the rotation closing process, so as to reduce the force on the first hinge axis and the second hinge axis in the vertical direction and reduce the burden on the first hinge axis and the second hinge axis.

[0067] Compared with the way of setting the first inclined part and the second inclined part, "filling" the partial depression corresponding to the first inclined part can not only retain the inclined surface of the second inclined part that slopes downward to ensure the self-closing effect of the gravity self-closing structure, but also remove the upward movement process of the door body during the rotation and closing process, and only retain the downward movement process of the door body during the rotation and closing process, thereby reducing the force on the first hinge shaft and the second hinge shaft in the vertical direction and reducing the burden on the first hinge shaft and the second hinge shaft.

[0068] Specifically, the refrigerator may include a gravity self-closing structure, which includes a cooperating fixed part and a movable part. The movable part is provided with a first track groove and a second track groove. The fixed part is correspondingly provided with a first hinge shaft and a second hinge shaft. The first hinge shaft is relatively movably arranged in the first track groove, and the second hinge shaft is relatively movably arranged in the second track groove. The fixed part is provided with a connected first contact part and an inclined part. The first end of the inclined part is connected to the first contact part, and the second end of the inclined part slopes downward. The movable part is provided with an abutting part for abutting against the first contact part and the inclined part.

[0069] By setting the gravity self-closing structure, during the rotation and closing process of the door body, the first hinge shaft can be relatively movably arranged in the first track groove, the second hinge shaft can be relatively movably arranged in the second track groove, and the abutting part can move from the first contact part to the first end of the inclined part and then slope downward from the first end of the inclined part to the second end of the inclined part to realize the closing process of the door body.

[0070] Due to the certain gravity of the door body, during the rotation and opening process of the door body, it is necessary to overcome the gravity of the door body so that the door body can drive the abutting part to move from the second end of the inclined part to the first end of the inclined part, thereby playing a certain limiting role on the abutting part through the inclined part and reducing the possibility of the movement of the abutting part. And during the rotation and closing process of the door body, when the abutting part abuts against the inclined part, the abutting part can move towards the second end of the inclined part under the action of the gravity of the door body. When closing the door body to enclose the accommodating cavity, the possibility of a gap appearing between the door body and the box body can be reduced, and the sealing performance of the accommodating cavity can be improved.

[0071] It should be noted that the refrigerator in the embodiment of the present application does not need to be provided with a first inclined part that slopes upward, but is provided with an inclined part that slopes downward, so that it can not only cooperate with the abutting part through the inclined part that slopes downward to ensure the gravity self-closing effect of the door body, but also remove the upward movement process of the door body during the rotation and closing process, reduce the force on the first hinge shaft and the second hinge shaft in the vertical direction, and reduce the burden on the first hinge shaft and the second hinge shaft.

[0072] To make the objectives, embodiments, and advantages of this application clearer, the following will clearly and completely describe the exemplary embodiments of this application in conjunction with the accompanying drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only a part of the embodiments of this application, rather than all of the embodiments.

[0073] It should be noted that the brief description of the terms in this application is only for the convenience of understanding the embodiments described hereinafter, rather than intending to limit the embodiments of this application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0074] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover but not exclude inclusion. For example, a product or device comprising a series of components does not necessarily have to be limited to those components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0075] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0076] The terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0077] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0078] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0079] In a first aspect, an embodiment of the present application provides a refrigerator. Referring to Figure 6 and Figure 7 , the refrigerator 1 includes a box body 10 having a receiving cavity, a door body 30 connected to the box body 10 to open and close the receiving cavity, and a refrigeration device for supplying cold air to the receiving cavity. The box body 10 includes an inner liner defining the receiving cavity, an outer shell connected to the outside of the inner liner to form the appearance of the refrigerator, and a heat insulation layer disposed between the inner liner and the outer shell to insulate the receiving cavity.

[0080] The box body 10 defines a plurality of receiving cavities. In this embodiment, the plurality of receiving cavities may include a refrigerating chamber and a freezing chamber located below the refrigerating chamber. It should be noted that the types and settings of the plurality of receiving cavities of the refrigerator 1 are not limited thereto.

[0081] A pick-up and placement opening is formed at the front end of the receiving cavity, and the user can place food into or take out food from the receiving cavity through the pick-up and placement opening. A rotatable door body 30 is provided on the box body 10 to open or close the pick-up and placement opening of the receiving cavity. For example, the door body 30 is rotatably connected to the box body 10 by a hinge assembly located at the upper part of the refrigerator 1 and a hinge assembly located at the lower part of the refrigerator 1.

[0082] The box body 10 includes a first body side wall (i.e., one of the left side wall and the right side wall of the box body 10) and a second body side wall (i.e., the other of the left side wall and the right side wall of the box body 10) that are oppositely arranged. The hinge assembly is disposed on the box body 10 and close to the first body side wall.

[0083] The door body 30 has a front door wall 31 that is away from the box body 10 when the door body 30 is closed, a door rear wall opposite to the front door wall 31, and a door side wall 32 that is close to the hinge assembly and connected to the front door wall 31. For example, when the hinge assembly is located on the right side of the box body 10, the right side wall of the door body 30 is the door side wall 32. When the hinge assembly is located on the left side of the box body 10, the left side wall of the door body 30 is the door side wall 32.

[0084] The front door wall 31 and the door side wall 32 of the door body 30 intersect to form a first side edge W, and the door side wall 32 and the door rear wall intersect to form a second side edge N. When the door body 30 is closed, the first side edge W is located on the side away from the box body 10 of the second side edge N.

[0085] It should be noted that when both the front door wall 31 and the side door wall 32 are flat wall surfaces, the intersection line of the plane where the front door wall 31 is located and the plane where the side door wall 32 is located is the theoretically first side edge W. The rounded corner transition at the intersection of the front door wall 31 and the side door wall 32 forms a curved surface extending along the height direction of the door body 30 (i.e., the up and down direction as shown in Figure 1 ).

[0086] For the convenience of description, any straight line extending along the height direction of the door body 30 on this curved surface represents the first side edge W. Similarly, for the rounded corner transition at the intersection of the rear door wall and the side door wall 32, the intersection line of the planes where the rear door wall and the side door wall 32 are located can represent the second side edge N, or a straight line close to and parallel to this intersection line can be used to represent the second side edge N.

[0087] Refer to Figures 3 - 6 , a door seal is provided on the rear door wall of the door body 30. When the door body 30 is closed, the door seal surrounds the access opening and fits against the front end face of the box body 10 to effectively seal the connection between the door body 30 and the box body 10, thereby ensuring that the door body 30 seals the access opening and preventing cold air from leaking out. For example, the door seal can be in a ring shape.

[0088] Exemplarily, hinge assemblies 130 can be provided at both the upper and lower ends of the door body 30. The hinge assembly 130 can include a hinge plate 131 connected to the box body 110, and a first hinge shaft 160 and a second hinge shaft 170, which are connected to the hinge plate 131 to form a defining axis for guiding the movement of the door body 30. The hinge plate 131, the first hinge shaft 160, and the second hinge shaft 170 can be integrally formed, or can be separately provided and assembled with each other.

[0089] Corresponding to the position of the hinge plate 131, first track grooves 140 and second track grooves 150 are provided at both the upper and lower ends of the door body 30. Exemplarily, the positions of the two first track grooves 140 at the upper and lower ends of the door body 30 correspond to each other in the height direction of the refrigerator, and the positions of the two second track grooves 150 correspond to each other in the height direction of the refrigerator, so that the movements of the upper and lower ends of the door body 30 are consistent, thereby making the opening or closing of the door body 30 smoother.

[0090] Refer to Figures 8 - 10, in some embodiments, the refrigerator further includes a gravity self-closing structure, which can be disposed at the lower end of the door body 30. The gravity self-closing structure may include a cooperating fixed member 300 and a movable member 400. Among them, the fixed member 300 can be fixedly arranged on the cabinet 110, the movable member 400 can be fixedly arranged on the door body 30. The movable member 400 and the fixed member 300 can be arranged in the vertical direction, and the hinge assembly 130 at the lower end of the door body 30 can be reused to form at least one of the fixed member 300 and the movable member 400, so as to make the formation process of the gravity self-closing structure more convenient. Alternatively, the fixed member 300 can also be fixedly arranged on the door body 30, and the movable member 400 can be fixed to the cabinet 110.

[0091] When the door body 30 rotates to the closed state, the door body 30 can move toward the cabinet 110 through the gravity self-closing structure. The door body 30 can move relative to the fixed member 300 in the vertical direction driven by the movable member 400, so that the door body 30 can abut against the cabinet 110. And when the door body 30 needs to be rotated and opened, it is necessary to overcome the gravity of the door body 30 to separate the door body 30 from the cabinet 10, so as to reduce the gap between the door body 30 and the cabinet 110 when the door body 30 is in the closed state and improve the sealing performance of the accommodation cavity.

[0092] Exemplarily, the refrigerator can be set as a side-by-side refrigerator. The number of door bodies 30 of the side-by-side refrigerator is set to two to seal multiple accommodation cavities through the two door bodies 30. Compared with other types of refrigerators such as the French door refrigerator, the height of the door body 30 of the side-by-side refrigerator is relatively high, and the weight of the door body 30 of the side-by-side refrigerator is relatively large, so that the gravity self-closing effect of the door body 30 of the side-by-side refrigerator through the gravity self-closing structure is better, and the gravity required to be overcome when rotating and opening the door body 30 is increased.

[0093] It should be noted that a structure such as a suction assist device can also be provided between the door body 30 and the cabinet 10 to reduce the gap between the door body 30 and the cabinet 110. However, compared with other types of refrigerators such as the French door refrigerator, the weight of the door body 30 of the side-by-side refrigerator is relatively large, and the side-by-side refrigerator usually cannot achieve tight sealing of the door body 30 and the cabinet 10 only through the suction assist device. This also makes the gravity self-closing structure more suitable for refrigerators with a large door body 30 weight such as side-by-side refrigerators or other types of refrigerators with a door body 30 that can carry a large weight, so as to further improve the sealing effect of the door body 30 on the accommodation cavity.

[0094] In some embodiments, the height of the door body 30 can be set to be greater than or equal to 1700 millimeters and less than or equal to 2000 millimeters. For example, the height of the door body 30 can be set within any one of the height ranges of 1700 millimeters - 1750 millimeters, 1750 millimeters - 1800 millimeters, 1800 millimeters - 1850 millimeters, 1850 millimeters - 1900 millimeters, 1900 millimeters - 1950 millimeters, and 1950 millimeters - 2000 millimeters.

[0095] It is easy to understand that the height of the door body 30 will affect the gravity of the door body 30. For example, when parameters such as the material and thickness of the door body 30 remain the same, the higher the height of the door body 30, the greater the weight of the door body 30, and the better the gravity self-closing effect of the gravity self-closing structure of the door body 30; and when the distance moved in the vertical direction during the rotation closing or rotation opening of the door body 30 remains the same, the higher the height of the door body 30, the lower the ratio of the distance moved in the vertical direction of the door body 30 to the height of the door body 30, and the corresponding jerks during the rotation closing or rotation opening of the door body 30 by the user are reduced.

[0096] Any of the above height ranges can include at least one of the two endpoint values. For example, when the height of the door body 30 is set within the height range of 1700 millimeters - 1750 millimeters, the height of the door body 30 can be greater than or equal to 1700 millimeters and less than or equal to 1750 millimeters; or, the height of the door body 30 can also be greater than 1700 millimeters and less than or equal to 1750 millimeters; or, the height of the door body 30 can be greater than or equal to 1700 millimeters and less than 1750 millimeters;

[0097] Or, any of the above height ranges can also not include the two endpoint values. For example, when the height of the door body 30 is set within the height range of 1700 millimeters - 1750 millimeters, the height of the door body 30 can also be set to be greater than 1700 millimeters and less than 1750 millimeters.

[0098] It should be noted that for each numerical range that appears in the embodiments of the present application, such as the subsequent thickness range or weight range, etc., the numerical ranges can refer to the height range, that is, the numerical ranges can include at least one of the two endpoint values, or the numerical ranges can also not include the two endpoint values. This will not be elaborated in the subsequent embodiments of the present application.

[0099] In some embodiments, the thickness of the door body 30 can be set to be greater than or equal to 45 millimeters and less than or equal to 65 millimeters. For example, the thickness of the door body 30 can be set within any one of the height ranges of 45 millimeters - 48 millimeters, 48 millimeters - 50 millimeters, 50 millimeters - 52 millimeters, 52 millimeters - 55 millimeters, 55 millimeters - 58 millimeters, 58 millimeters - 60 millimeters, 60 millimeters - 62 millimeters, and 62 millimeters - 65 millimeters.

[0100] It is easy to understand that the thickness of the door body 30 will affect the gravity of the door body 30. For example, when parameters such as the material and height of the door body 30 are kept consistent, the higher the thickness of the door body 30, the greater the weight of the door body 30, and the better the gravity self-closing effect of the door body 30 through the gravity self-closing structure.

[0101] The weight of the door body 30 can be set to be less than or equal to 10 kilograms. For example, the weight of the door body 30 can be set to any weight range among 5 kilograms - 6 kilograms, 6 kilograms - 7 kilograms, 7 kilograms - 8 kilograms, 8 kilograms - 9 kilograms, and 9 kilograms - 10 kilograms. It is easy to understand that during the use of the refrigerator, certain weights of items can be placed on the door body 30, thereby increasing the total weight of the door body 30 and improving the gravity self-closing effect of the door body 30.

[0102] Alternatively, the weight of the door body 30 can also be set to be greater than or equal to 10 kilograms and less than or equal to 30 kilograms. For example, the weight of the door body 30 can be set to any weight range among 10 kilograms - 15 kilograms, 15 kilograms - 20 kilograms, 20 kilograms - 25 kilograms, and 25 kilograms - 30 kilograms, so as to make the connection between the door body 30 and the cabinet 110 tighter through the gravity of the door body 30.

[0103] Exemplarily, a first contact portion 310 and an inclined portion 320 connected to each other can be provided on the surface of the fixing member 300 facing the moving member 400. Among them, the first contact portion 310 can be arranged parallel to the horizontal plane, or the first contact portion 310 can also be arranged obliquely to the horizontal plane. For example, one end of the first contact portion 310 away from the inclined portion 320 can be inclined upward or downward; the first end of the inclined portion 320 is connected to the first contact portion 310, the second end of the inclined portion 320 is connected to the second contact portion 330, the first end of the inclined portion 320 is higher than the second end of the inclined portion 320, and the inclination angle of the inclined portion 320 is greater than the inclination angle of the first contact portion 310.

[0104] A contact portion 410 can be provided on the surface of the moving member 400 facing the fixing member 300. During the process of the door body 30 rotating and opening, the contact portion 410 can move obliquely upward from the second end of the inclined portion 320 to the first end of the inclined portion 320, and then move to the first contact portion 310 through the first end of the inclined portion 320, thereby realizing the opening process of the door body 30.

[0105] During the process of the door body 30 rotating and closing, the contact portion 410 can move from the first contact portion 310 to the first end of the inclined portion 320, and then move obliquely downward from the first end of the inclined portion 320 to the second end of the inclined portion 320, thereby realizing the closing process of the door body 30.

[0106] Alternatively, the surface of the fixed member 300 facing the movable member 400 may also be provided with a first contact portion 310, an inclined portion 320, and a second contact portion 330 connected in sequence, wherein the first end of the inclined portion 320 is connected to the first contact portion 310, the second end of the inclined portion 320 is connected to the second contact portion 330, the first end of the inclined portion 320 is higher than the second end of the inclined portion 320, and the first contact portion 310 is closer to the movable member 400 than the second contact portion 330;

[0107] At least one of the first contact portion 310 and the second contact portion 330 may be arranged in parallel to the horizontal plane, for example, both the first contact portion 310 and the second contact portion 330 are arranged in parallel to the horizontal plane, or one of the first contact portion 310 and the second contact portion 330 is arranged in parallel to the horizontal plane, and the other of the first contact portion 310 and the second contact portion 330 is arranged at an angle.

[0108] For example, the end of the first contact portion 310 away from the inclined portion 320 may be inclined upward or downward, the inclination angle of the first contact portion 310 may be greater than the inclination angle of the inclined portion 320, or the inclination angle of the first contact portion 310 may be smaller than the inclination angle of the inclined portion 320, and the second contact portion 330 may be arranged parallel to the horizontal plane;

[0109] The first contact portion 310 may be arranged parallel to the horizontal plane; the end of the second contact portion 330 away from the inclined portion 320 may be inclined upward or downward, and the inclination angle of the second contact portion 330 may be greater than the inclination angle of the inclined portion 320, or the inclination angle of the second contact portion 330 may be smaller than the inclination angle of the inclined portion 320;

[0110] Alternatively, the end of the first contact portion 310 away from the inclined portion 320 can be tilted upward or downward, and the inclination angle of the first contact portion 310 can be greater than or less than the inclination angle of the inclined portion 320; the end of the second contact portion 330 away from the inclined portion 320 can be tilted upward or downward, and the inclination angle of the second contact portion 330 can be greater than or less than the inclination angle of the inclined portion 320.

[0111] In some embodiments, the surface of the movable member 400 facing the fixed member 300 may be provided with an abutment portion 410, and the abutment portion 410 may be used to abut the first contact portion 310, the inclined portion 320, and the second contact portion 330. It is set to 0 degrees, that is, when the door body 30 is in a closed state, the bottom of the abutting portion 410 abuts against the second contact portion 330 .

[0112] It should be noted that when the refrigerator is set as a side-by-side refrigerator, during the process of the door body 30 rotating open or rotating closed, the door body 30 needs to move horizontally, and the door body 30 needs to move vertically relative to the fixed part 300 driven by the movable part 400; such that the first hinge shaft 160 and the second hinge shaft 170 in the gravity self-closing structure not only need to drive the door body 30 to move horizontally, but also need to bear the gravity from the door body 30. Due to the relatively large weight of the door body 30, there is a possibility that the first hinge shaft 160 and the second hinge shaft 170 are prone to being deformed or even broken due to excessive stress.

[0113] Therefore, by providing the abutting part 410 and using the abutting part 410 in cooperation with the fixed part 300, it is possible to share part of the gravity of the door body 30 through the abutting part 410, such that part of the gravity of the door body 30 can be transmitted to the fixed part 300 through the abutting part 410, and part of the gravity of the door body 30 is transmitted to the first hinge shaft 160 and the second hinge shaft 170, reducing the stress on the first hinge shaft 160 and the second hinge shaft 170, thereby reducing the possibility of deformation and other conditions of the first hinge shaft 160 and the second hinge shaft 170.

[0114] It should be noted that the opening angle of the door body 30 can be determined according to the relative position between the door body 30 and the cabinet 10. Taking the door body 30 on the left side of the cabinet 10 as an example, the opening angle of the door body 30 can be equal to the angle between the horizontal line perpendicular to the left side surface of the cabinet 10 and the surface of the door body 30 facing the cabinet 10. For example, the opening angle of the door body 30 can be set as: the difference between the angle formed by the horizontal line inside the left side surface of the cabinet 10 and the horizontal line inside the surface of the door body 30 facing the cabinet 10 minus 90 degrees; and when the door body 30 is in the closed state, when the angle formed by the horizontal line inside the left side surface of the cabinet 10 and the horizontal line inside the surface of the door body 30 facing the cabinet 10 is less than 90 degrees, the opening angle of the door body 30 can also be less than 0 degrees.

[0115] Referring to Figures 9 - 11 , taking the fixed part 300 being provided with the first contact part 310, the inclined part 320, and the second contact part 330 as an example, the relative movement relationship between the abutting part 410 and the fixed part 300 during the process of the door body 30 rotating open or rotating closed will be described below.

[0116] During the process of the door body 30 rotating open, the abutting part 410 can move from the second contact part 330 to the second end of the inclined part 320, then move obliquely upward from the second end of the inclined part 320 to the first end of the inclined part 320, and then move to the first contact part 310 through the first end of the inclined part 320, thereby realizing the opening process of the door body 30.

[0117] During the process of the door body 30 rotating and closing, the abutting portion 410 can move from the first contact portion 310 to the first end of the inclined portion 320, then obliquely move downward from the first end of the inclined portion 320 to the second end of the inclined portion 320, and then move to the second contact portion 330 through the second end of the inclined portion 320, thereby realizing the closing process of the door body 30.

[0118] The abutting portion 410 can be reused to form the first track groove 140 and the second track groove 150, making the structure of the movable member 400 simpler.

[0119] It should be noted that the door body 30 has a certain gravity. During the process of the door body 30 rotating and opening, it is necessary to overcome the gravity of the door body 30 so that the door body 30 can drive the abutting portion 410 to move from the second end of the inclined portion 320 to the first end of the inclined portion 320, thereby playing a certain limiting role on the abutting portion 410 through the inclined portion 320 and reducing the possibility of the movement of the abutting portion 410;

[0120] Moreover, during the process of the door body 30 rotating and closing, when the abutting portion 410 abuts against the inclined portion 320, the abutting portion 410 can move towards the second end of the inclined portion 320 under the action of the gravity of the door body 30, thereby making the process of the door body 30 moving from the inclined portion 320 to the second contact portion 330 more convenient.

[0121] Exemplarily, when the abutting portion 410 moves to the second contact portion 330, the door seal located on the rear wall of the door body 30 can surround the access opening, so that the door seal fits against the front end surface of the box body 110, effectively sealing the connection between the door body 30 and the box body 110, thereby being able to cooperate with the gravity self-closing structure and the door seal to ensure that the door body 30 seals the access opening and prevent cold air from leaking out.

[0122] It is easy to understand that when the abutting portion 410 is located on the surface of the second contact portion 330, the bottom of the abutting portion 410 can abut against the surface of the second contact portion 330, and the bottom of the abutting portion 410 can be relatively slidably arranged on the second contact portion 330, so that a part of the gravity of the door body 30 can be transmitted to the second contact portion 330 through the abutting portion 410, and a part of the gravity of the door body 30 is transmitted to the first hinge shaft 160 and the second hinge shaft 170, thereby increasing the support of the fixing member 300 for the door body 30.

[0123] Compared with the way of arranging the second contact portion 330 at intervals from the abutting portion 410, by abutting the bottom of the abutting portion 410 against the surface of the second contact portion 330, the abutting portion 410 is in contact with the second contact portion 330, and the second contact portion 330 can bear a part of the gravity of the door body 30, reducing the magnitude of the force on the first hinge shaft 160 and the second hinge shaft 170, thereby reducing the possibility of deformation and other situations of the first hinge shaft 160 and the second hinge shaft 170.

[0124] Alternatively, the bottom of the abutting portion 410 (e.g., the subsequent first abutting surface 411) may also be spaced apart from the second contact portion 330; when the abutting portion 410 is located on the surface of the second contact portion 330, the bottom of the abutting portion 410 is spaced apart from the second contact portion 330, and the distance between the bottom of the abutting portion 410 and the second contact portion 330 may be set to be greater than or equal to 0.5 mm and less than or equal to 3 mm;

[0125] For example, the distance between the bottom of the abutting portion 410 and the second contact portion 330 may be set within any one of the distance ranges of 0.5 mm - 1 mm, 1 mm - 1.5 mm, 1.5 mm - 2 mm, 2 mm - 2.5 mm, 2.5 mm - 3 mm, so as to reduce the frictional force between the abutting portion 410 and the second contact portion 330, reduce the wear of the abutting portion 410, and be able to reduce the possibility of the abutting portion 410 being extruded and deformed, etc.

[0126] Moreover, the distance between the bottom of the abutting portion 410 and the second contact portion 330 may be determined according to parameters such as the thickness of the door body, the height of the door body, and the assembly space of the gravity self-closing structure. For example, when the assembly space of the gravity self-closing structure is larger, the distance between the bottom of the abutting portion 410 and the second contact portion 330 may be increased correspondingly, and the smaller the distance between the bottom of the abutting portion 410 and the second contact portion 330, the more compact the position between the fixing member 300 and the movable member 400, and the smaller the assembly space required for the gravity self-closing structure.

[0127] The positions of the inclined portion 320 and the second contact portion 330 may be determined according to the opening angle of the door body 30 ; for example, the opening angle of the door body 30 may have a first set angle, a second set angle, and a third set angle that decrease in sequence, wherein when the opening angle of the door body 30 is set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320; when the opening angle of the door body 30 is set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320.

[0128] Exemplarily, referring to Figure 13 , when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the bottom of the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is set to: when, the bottom of the abutting portion 410 abuts against the first contact portion 310. When the opening angle of the door body 30 When the degree is [value], the opening angle of the door body 30 is set to the second set angle, and the bottom of the abutting portion 410 abuts against the first end of the inclined portion 320. Refer to Figure 14 , when the opening angle of the door body 30 is [value], the opening angle of the door body 30 is set to the third set angle, and the bottom of the abutting portion 410 abuts against the second end of the inclined portion 320. Refer to Figure 15 , when the opening angle of the door body 30 is set to: , the bottom of the abutting portion 410 abuts against the second contact portion 330.

[0129] The first stage

[0130] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is [value], the abutting portion 410 abuts against the first contact portion 310, and the abutting portion 410 moves from one end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320. When the opening angle of the door body 30 is [value], the door body 30 is at the second set angle, and the abutting portion 410 can move to the first end of the inclined portion 320.

[0131] The second stage

[0132] When the opening angle of the door body 30 is set to: , the abutting portion 410 abuts against the inclined portion 320, and the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410. When the opening angle of the door body 30 is [value], the door body 30 is at the third set angle, and the abutting portion 410 moves to the second end of the inclined portion 320;

[0133] The third stage

[0134] When the opening angle of the door body 30 is set to: , the abutting portion 410 abuts against the second contact portion 330 to drive the abutting portion 410 to move towards one end of the second contact portion 330 away from the inclined portion 320. When the opening angle of the door body 30 When the temperature is [specific temperature], the abutting portion 410 abuts against the second contact portion 330, and the door seal on the rear wall of the door body 30 fits against the front end surface of the cabinet body 110 to effectively seal the connection between the door body 30 and the cabinet body 110.

[0135] It should be noted that when the user pushes the door body 30 to rotate it closed, during the process that the abutting portion 410 abuts against the first contact portion 310, the inclined portion 320, and the second contact portion 330 in sequence, the door body 30 will have a downward movement process, which will cause a certain sense of jerk for the user. The sense of jerk during the closing process of the door body 30 can be weakened and the user experience can be improved by adjusting the inclination angle of the inclined portion 320 and the height difference between the first contact portion 310 and the second contact portion 330 to change the moving distance of the door body 30 in the vertical direction.

[0136] Exemplarily, the first set angle, the second set angle, and the third set angle of the door body 30 can be changed by adjusting the positions and lengths of the first contact portion 310, the inclined portion 320, and the second contact portion 330 in the horizontal direction, so as to change the time of the first stage, the second stage, and the third stage during the process of the door body 30 rotating and closing.

[0137] Among them, the opening angle corresponding to the first contact portion 310 is equal to the difference between the first set angle and the second set angle, the opening angle corresponding to the inclined portion 320 is equal to the difference between the second set angle and the third set angle, and the opening angle corresponding to the second contact portion 330 is equal to the third set angle.

[0138] For example, during the process of the door body 30 rotating and closing, when the length of the first contact portion 310 increases, the moving time of the abutting portion 410 along the horizontal direction on the first contact portion 310 increases; when the length of the inclined portion 320 in the horizontal direction increases, the moving time of the abutting portion 410 along the horizontal direction and the vertical direction on the inclined portion 320 increases, and the difference between the second set angle and the third set angle increases; when the length of the second contact portion 330 increases, the moving time of the abutting portion 410 along the horizontal direction on the second contact portion 320 increases.

[0139] Moreover, the position of the second set angle of the door body 30 can be changed by adjusting the position of the first end of the inclined portion 320 in the horizontal direction, and the position of the third set angle of the door body 30 can be adjusted by adjusting the position of the second end of the inclined portion 320 in the horizontal direction to determine the moving time of the door body 30 in the vertical direction.

[0140] The opening angle corresponding to the inclined portion 320 (i.e., the difference between the second set angle and the third set angle) can be set to be greater than or equal to 5 degrees and less than or equal to 20 degrees. For example, the opening angle corresponding to the inclined portion 320 (i.e., the difference between the second set angle and the third set angle) can be set within any one of the angular ranges of 5 degrees - 10 degrees, 10 degrees - 15 degrees, and 15 degrees - 20 degrees to reduce the sense of jerk when the user closes the door.

[0141] In some embodiments, in the horizontal direction, the length of the first contact portion 310 can be equal to the length of the second contact portion 330; or, in the horizontal direction, the length of the first contact portion 310 can be greater than the length of the second contact portion 330, and the length of the first contact portion 310 is greater than the length of the inclined portion 320.

[0142] For example, in the horizontal direction, the length of the first contact portion 310 is greater than or equal to three times the length of the inclined portion 320, that is, the difference between the first set angle and the second set angle is greater than or equal to three times the difference between the second set angle and the third set angle.

[0143] Exemplarily, when the opening angle of the door body 30 is set to 30 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the first contact portion 310. When the opening angle of the door body 30 is degrees, the opening angle

[0144] of the door body 30 is set to the second set angle, and the abutting portion 410 abuts against the first end of the inclined portion 320. The difference between the first set angle and the second set angle is 10 degrees. When the opening angle of the door body 30 is set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, and the difference between the second set angle and the third set angle is 15 degrees. When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the second contact portion 330.

[0145] The first stage

[0146] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 30 degrees, the opening angle Set to the first set angle, the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is such that the abutting portion 410 abuts against the first contact portion 310, and the abutting portion 410 moves from one end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320. When the opening angle of the door body 30 is at a certain degree, the door body 30 is at the second set angle, and the abutting portion 410 can move to the first end of the inclined portion 320;

[0147] Second stage

[0148] When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the inclined portion 320, and the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410. When the opening angle of the door body 30 is at a certain degree, the door body 30 is at the third set angle, and the abutting portion 410 moves to the second end of the inclined portion 320;

[0149] Third stage

[0150] When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the second contact portion 330 to drive the abutting portion 410 to move towards one end of the second contact portion 330 away from the inclined portion 320. When the opening angle of the door body 30 is at a certain degree, the abutting portion 410 abuts against the second contact portion 330, and the door seal on the rear wall of the door body 30 fits against the front end surface of the box body 110 to effectively seal the connection between the door body 30 and the box body 110.

[0151] It should be noted that when the abutting portion 410 has a certain width in the horizontal direction, the abutting portion 410 corresponds to a partial central angle. For example, when the central angle corresponding to the abutting portion 410 is 5 degrees and the angle corresponding to the second contact portion 330 (i.e., the third set angle) is 5 degrees, then when the abutting portion 410 moves to the second end of the inclined portion 320, the abutting portion 410 moves to the second contact portion 330, and the abutting portion 410 does not move on the second contact portion 330.

[0152] Exemplarily, when the opening angle of the door body 30 is set to 30 degrees, the opening angle of the door body 30 is set to the first set angle, the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 Set to: 20 degrees ≤ degrees, the abutting portion 410 abuts against the first contact portion 310. When the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320, and the difference between the first set angle and the second set angle is 10 degrees.

[0153] When the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, and the difference between the second set angle and the third set angle is 15 degrees; when the opening angle of the door body 30 is set to: degrees, the abutting portion 410 abuts against the second contact portion 330.

[0154] The first stage

[0155] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 30 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at the end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 degrees, the abutting portion 410 abuts against the first contact portion 310, and the abutting portion 410 moves from the end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320. When the opening angle of the door body 30 degrees, the door body 30 is at the second set angle, and the abutting portion 410 can move to the first end of the inclined portion 320.

[0156] The second stage

[0157] When the opening angle of the door body 30 is set to: degrees, the abutting portion 410 abuts against the inclined portion 320, and the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410. When the opening angle of the door body 30 degrees, the door body 30 is at the third set angle, the abutting portion 410 moves to the second end of the inclined portion 320, the bottom surface of the abutting portion 410 completely fits against the second contact portion 330, and the door seal strip located on the rear wall of the door body 30 fits against the front end surface of the box body 110 to effectively seal the connection between the door body 30 and the box body 110.

[0158] It should be noted that when the bottom of the abutting portion 410 has no width in the horizontal direction, for example, the abutting portion 410 can be set as a triangular abutting portion 410, the first surface of the abutting portion 410 is arranged parallel to the inclined portion 320, and the second surface of the abutting portion 410 is arranged vertically; then the angle of the second contact portion 330 can be set to 0 degrees, that is, the second contact portion 330 can be not provided, and the third set angle is equal to 0 degrees.

[0159] Exemplarily, when the opening angle of the door body 30 is set to 30 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is set to: 20 degrees ≤ degrees, the abutting portion 410 abuts against the first contact portion 310. When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the second set angle, and the abutting portion 410 abuts against the first end of the inclined portion 320. The difference between the first set angle and the second set angle is 10 degrees.

[0160] When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, and the first surface of the abutting portion 410 is completely attached to the inclined portion 320. The difference between the second set angle and the third set angle is 20 degrees.

[0161] The first stage

[0162] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 30 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is, the abutting portion 410 abuts against the first contact portion 310, and the abutting portion 410 moves from one end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320. When the opening angle of the door body 30 is degrees, the door body 30 is at the second set angle, and the abutting portion 410 can move to the first end of the inclined portion 320;

[0163] The second stage

[0164] When the opening angle of the door body 30 is set to: When the abutting portion 410 abuts against the inclined portion 320, the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410. When the opening angle of the door body 30 degrees, the door body 30 is at the third set angle, the abutting portion 410 moves to the second end of the inclined portion 320, and the first surface of the abutting portion 410 completely fits against the inclined portion 320. The door seal located on the rear wall of the door body 30 fits against the front end surface of the box body 110 to effectively seal the connection between the door body 30 and the box body 110.

[0165] Exemplarily, when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the first set angle. When the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the second set angle; when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the third set angle.

[0166] At this time, on the surface of the fixing member 300 facing the movable member 400, the central angles corresponding to the first contact portion 310, the inclined portion 320, and the second contact portion 330 are set to 115 degrees. That is, in the process of the abutting portion 410 moving from the end of the first contact portion 310 away from the second contact portion 330, passing through the inclined portion 320 and moving to the end of the second contact portion 330 away from the first contact portion 310, the rotation angle of the door body 30 is 115 degrees.

[0167] Exemplarily, when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the first set angle. When the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the second set angle; when the opening angle of the door body 30 = 5 degrees, the opening angle of the door body 30 is set to the third set angle.

[0168] At this time, on the surface of the fixing member 300 facing the movable member 400, the central angles corresponding to the first contact portion 310, the inclined portion 320, and the second contact portion 330 are set to 25 degrees. That is, in the process of the abutting portion 410 moving from the end of the first contact portion 310 away from the second contact portion 330, passing through the inclined portion 320 and moving to the end of the second contact portion 330 away from the first contact portion 310, the rotation angle of the door body 30 is 25 degrees.

[0169] Exemplarily, when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the first set angle. When the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the second set angle; when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to the third set angle.

[0170] At this time, on the surface of the fixing member 300 facing the movable member 400, the central angles corresponding to the first contact portion 310, the inclined portion 320, and the second contact portion 330 are set to 30 degrees. That is, in the process that the abutting portion 410 moves from one end of the first contact portion 310 away from the second contact portion 330, passes through the inclined portion 320, and moves to one end of the second contact portion 330 away from the first contact portion 310, the rotation angle of the door body 30 is 30 degrees.

[0171] In some embodiments, the positions of the first end and the second end of the inclined portion 320 can also be determined according to the relative positions of the first hinge shaft 160 and the first track groove 140, and the relative positions of the second hinge shaft 170 and the second track groove 150, so as to improve the stability of the movement process of the first hinge shaft 160 and the second hinge shaft 170.

[0172] It should be noted that the second set angle can be set to be greater than or equal to 8 degrees and less than or equal to 25 degrees. For example, the second set angle can be set within any one of the angle ranges of 8 degrees - 10 degrees, 10 degrees - 12 degrees, 12 degrees - 14 degrees, 14 degrees - 16 degrees, 16 degrees - 18 degrees, 18 degrees - 20 degrees, 20 degrees - 22 degrees, and 22 degrees - 25 degrees.

[0173] When the door body 30 is at the third set angle, the door body 30 may not be in the closed state, or the door body 30 may be in the closed state; the third set angle can be set to be greater than or equal to -5 degrees and less than or equal to 10 degrees, and the third set angle is less than the second set angle. For example, the third set angle can be set within any one of the angle ranges of -5 degrees - 0 degrees, 0 degrees - 5 degrees, 5 degrees - 8 degrees, 8 degrees - 10 degrees, 10 degrees - 12 degrees, 12 degrees - 15 degrees, 15 degrees - 18 degrees, and 18 degrees - 20 degrees.

[0174] During the process of the door body 30 rotating open or rotating closed, the user pulls or pushes the door body 30 to rotate around the first hinge shaft 160 and the second hinge shaft 170. When the door body 30 rotates between the second set angle and the third set angle, the door body 30 moves vertically relative to the fixing member 300 under the drive of the movable member 400.

[0175] During the process of the door body 30 rotating and opening, the door body 30 can rotate from the third set angle towards the second set angle, the opening angle of the door body 30 gradually increases, and the door body 30 moves upward in the vertical direction under the drive of the abutting part 410. When the angle of the third set angle is smaller, the user can feel the upward movement of the door body 30 earlier during the door opening process. When the angle of the second set angle is smaller, the user can feel the end of the upward movement of the door body 30 earlier during the door opening process. When the difference between the second set angle and the third set angle is smaller, the user can feel the upward movement process of the door body 30 shorter during the door opening process.

[0176] During the process of the door body 30 rotating and closing, the door body 30 can rotate from the second set angle towards the third set angle, the opening angle of the door body 30 gradually decreases, and the door body 30 drives the abutting part 410 to move downward in the vertical direction. When the angle of the second set angle is smaller, the user can feel the downward movement of the door body 30 earlier during the door closing process. When the angle of the third set angle is smaller, the user can feel the end of the downward movement of the door body 30 earlier during the door opening process. When the difference between the second set angle and the third set angle is smaller, the user can feel the downward movement process of the door body 30 shorter during the door opening process.

[0177] In some embodiments, referring to Figures 16 - 19 , the central trajectory line of the first trajectory groove 140 is denoted as the first trajectory line, and the first trajectory line is defined by the shape of the first trajectory groove 140. The first trajectory line includes a straight trajectory segment and a curved trajectory segment that are smoothly connected. The straight trajectory segment extends towards the direction close to the door side wall 32, and the curved trajectory segment is located on the side of the straight trajectory segment close to the door side wall 32 and bulges towards the direction close to the second side edge N.

[0178] The first trajectory groove 140 has a first inflection point U, and the first inflection point U divides the first trajectory groove 140 into a curved groove segment and a straight groove segment. The part of the first trajectory groove 140 between the first end of the first trajectory groove 140 and the first inflection point U forms a curved groove segment, and the central trajectory line of the curved groove segment is correspondingly denoted as the curved trajectory segment; the part of the first trajectory groove 140 between the first inflection point U and the second end of the first trajectory groove 140 forms a straight groove segment, and the central trajectory line of the straight groove segment is correspondingly denoted as the straight trajectory segment.

[0179] The second trajectory groove 150 can be set as a curved groove. One end of the second trajectory groove 150 is farther from the door rear wall and the door side wall 32 than the other end of the second trajectory groove 150. The second trajectory groove 150 bulges towards the direction close to the door rear wall. The central trajectory line of the second trajectory groove 150 is denoted as the second trajectory line. The second trajectory line is defined by the shape of the second trajectory groove 150, and the second trajectory line is curved and bulges towards the direction close to the door rear wall.

[0180] The second inflection point V divides the second track groove 150 into a first curve segment and a second curve segment; a part of the second track groove 150 between the first end of the second track groove 150 and the second inflection point V forms the first curve segment, and a part of the second track groove between the second inflection point V and the second end of the second track groove 150 forms the second curve segment.

[0181] When the door body 30 rotates by a unit angle, the speed at which the first hinge shaft 160 is located in the curve groove segment is less than the speed at which the first hinge shaft is located in the straight groove segment; the curvature of the second curve segment is less than the curvature of the first curve segment. When the door body 30 rotates by a unit angle, the speed at which the second hinge shaft 170 is located in the first curve segment is less than the speed at which the second hinge shaft 170 is located in the second curve segment.

[0182] Alternatively, the first track groove 140 can also be set as a curve groove. The first inflection point U divides the first track groove 140 into a first curve part and a second curve part; a part of the first track groove 140 between the first end of the first track groove 140 and the first inflection point U forms the first curve part, and a part of the first track groove 140 between the first inflection point U and the second end of the first track groove 140 forms the second curve part.

[0183] Among them, referring to Figure 16 , the first track line includes a first positioning point P1 far from the door side wall 32 and a sixth positioning point P6 close to the door side wall 32. The first track line extends from the first positioning point P1 first along a straight line in the direction close to the door side wall 32, and then extends along a curve to the sixth positioning point P6;

[0184] Exemplarily, the first track line extends from the first positioning point P1 first along a straight line in the direction close to the door side wall 32, and then extends along a curve in the direction close to the door side wall 32 and close to the front door wall 31 to the sixth positioning point P6. The distance between the first positioning point P1 and the front door wall 31 is denoted as D1, and the distance between the sixth positioning point P6 and the front door wall 31 is denoted as D2, and D1 > D2.

[0185] Exemplarily, the sixth positioning point P6 is located on the side of the first positioning point P1 close to the door side wall 32 and far from the front door wall 31, that is, the first track line extends from the first positioning point P1 first along a straight line in the direction close to the door side wall 32, and then extends along a curve in the direction close to the door side wall 32 and far from the front door wall 31 to the sixth positioning point P6.

[0186] Hereinafter, an example will be given in which the first track line extends from the first positioning point P1 first along a straight line in the direction close to the door side wall 32, and then extends along a curve in the direction close to the door side wall 32 and close to the front door wall 31 to the sixth positioning point P6.

[0187] The second trajectory line includes a first guiding point Q1 away from the door sidewall 32 and a sixth guiding point Q6 close to the door sidewall 32. The sixth guiding point Q6 is located on the side of the first guiding point Q1 that is away from the door front wall 31 and close to the door sidewall 32. The second trajectory line extends along a curve from the first guiding point Q1 in the direction away from the door front wall 31 and close to the door sidewall 32 to the sixth guiding point Q6.

[0188] When the door body 30 is in the closed state (i.e., at this time), the central axis of the first hinge shaft (positioning central axis P) is located at the first positioning point P1 of the first trajectory line, and the central axis of the second hinge shaft 170 (guiding central axis Q) is located at the first guiding point Q1 of the second trajectory line. That is, when the door body 30 is in the closed state, the first hinge shaft is located on the side of the second hinge shaft 170 that is close to the door sidewall 32 and close to the door rear wall.

[0189] The distance between the first guiding point Q1 and the door front wall 31 is denoted as Z1, and the distance between the sixth guiding point Q6 and the door front wall 31 is denoted as Z2. By way of example, Z1 < D2 < D1 < Z2. The above settings enable the second trajectory groove 150 to effectively limit the movement of the second hinge shaft 170 to drive the first hinge shaft 160 to move within the first trajectory groove 140, so that the door body 30 moves inward a certain distance during the opening process of the door body 30 and ensures the stability of the rotational opening of the door body 30.

[0190] In this embodiment, as Figure 19 shown, when the door body 30 is in the closed state, the central axis of the first hinge shaft 160 (positioning central axis P) can be located at the first positioning point P1 of the first trajectory line, and the central axis of the second hinge shaft 170 (guiding central axis Q) can be located at the first guiding point Q1 of the second trajectory line. That is, when the door body 30 is in the closed state, the first hinge shaft 160 is located on the side of the second hinge shaft 170 that is close to the door sidewall 32 and close to the door rear wall.

[0191] It should be noted that both the first inflection point U and the second inflection point V can be defined as follows: taking the line between the left and right sides of the box body 10 as the reference line perpendicular to them, when the door body 30 is in the closed state, in the plane where the first trajectory groove 140 and the second trajectory groove 150 are located, the reference line forms tangent points with both inner walls of the first trajectory groove 140, and the center of the connection line of the two tangent points can be determined as the first inflection point U of the first trajectory groove 140.

[0192] When the door body 30 is in the closed state, in the plane where the first trajectory groove 140 and the second trajectory groove 150 are located, the reference line forms tangent points with both inner walls of the second trajectory groove 150, and the center of the connection line of the two tangent points can be determined as the second inflection point V of the second trajectory groove 150. When the length direction of the movable member 400 is parallel to the reference line, the reference line can be set as the length direction of the movable member 400 to make the determination process of the first inflection point U and the second inflection point V more convenient.

[0193] Alternatively, the first inflection point U and the second inflection point V can also be defined as follows: during the process of the door body 30 rotating open or rotating closed, the force-bearing process of the first hinge shaft 160 and the second hinge shaft 170 can be analyzed, or alternatively, the torques of the first hinge shaft 160 and the second hinge shaft 170 can be analyzed. When the force on the first hinge shaft 160 or the torque of the first hinge shaft 160 changes significantly, the first hinge shaft 160 is located at the first inflection point U of the first track groove 140 to determine the time when the first hinge shaft 160 is located at the first inflection point U of the first track groove 140.

[0194] When the force on the second hinge shaft 170 or the torque of the second hinge shaft 170 changes significantly, the second hinge shaft 170 is located at the second inflection point V of the second track groove 150 to determine the time when the second hinge shaft 170 is located at the second inflection point V of the second track groove 150. Moreover, the relative position of the movable member 400 in the vertical direction can also be measured to determine the time when the movable member 400 reaches the first end and the second end of the inclined portion 320.

[0195] Taking the first track groove 140 as a curved groove section and a straight groove section as an example, the relative positions of the positioning central axis P and the guiding central axis Q during the process of the door body 30 rotating closed are described. Alternatively, the first track groove 140 can also be set as a first curved portion and a second curved portion. During the following movement process, the curved groove section can be replaced by the first curved portion, and the straight groove section can be replaced by the second curved portion, which will not be elaborated in the embodiments of the present application hereinafter.

[0196] During the process of the door body 30 rotating closed, when the positioning central axis P passes through the inflection point of the first track groove 140 and the guiding central axis Q passes through the inflection point of the second track groove 150, the door body 30 is at the second set angle. For example, when the door body 30 is at the second set angle, the positioning central axis P passes through the first inflection point U of the first track groove 140, and moreover, the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0197] Exemplarily, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle

[0198] When the opening angle of the door body 30 is at a certain degree, the opening angle of the door body 30 is set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320, the positioning central axis P passes through the first inflection point U of the first track groove 140, the positioning central axis P is located between the first inflection point U and the second end of the first track groove 140, and the positioning central axis P is located within the straight groove section; the guiding central axis Q passes through the second inflection point V of the second track groove 150, the guiding central axis Q is located between the second inflection point V and the second end of the second track groove 150, and the guiding central axis Q is located within the second curve section. The difference between the first set angle and the second set angle is 110 degrees.

[0199] When the opening angle of the door body 30 is at a certain degree, the opening angle of the door body 30 is set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, the positioning central axis P is located within the straight groove section, and the guiding central axis Q is located within the second curve section. The difference between the second set angle and the third set angle is 15 degrees. When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the second contact portion 330.

[0200] The first stage

[0201] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at the end of the first contact portion 310 away from the inclined portion 320;

[0202] Reference Figure 16 and Figure 17 When the opening angle of the door body 30 is at a certain degree, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P moves from the first end of the first track groove 140 towards the second end of the first track groove 140, the positioning central axis P moves from the curve groove section through the first inflection point U of the first track groove 140 to within the straight groove section; the guiding central axis Q moves from the first end of the second track groove 150 through the second inflection point V of the second track groove 150 towards the second end of the second track groove 150, and the abutting portion 410 moves from the end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320.

[0203] When the opening angle of the door body 30 When the degree is such that the door body 30 is at the second set angle, the abutting portion 410 can move to the first end of the inclined portion 320, the positioning central axis P passes through the first inflection point U of the first track groove 140, the positioning central axis P is located within the straight groove section, the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the guiding central axis Q is located within the second curve section;

[0204] Second stage

[0205] Reference Figure 17 And Figure 18 , when the opening angle of the door body 30 Is set to: At this time, the abutting portion 410 abuts against the inclined portion 320, and the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410; the positioning central axis P moves toward the second end of the first track groove 140 within the straight groove section; the guiding central axis Q moves toward the second end of the second track groove 150 within the second curve section.

[0206] When the opening angle of the door body 30 Is at a certain degree, the door body 30 is at the third set angle, the abutting portion 410 moves to the second end of the inclined portion 320, the positioning central axis P is located within the straight groove section, and the guiding central axis Q is located within the second curve section.

[0207] Third stage

[0208] Reference Figure 18 And Figure 19 , when the opening angle of the door body 30 Is set to: At this time, the abutting portion 410 abuts against the second contact portion 330 to drive the abutting portion 410 to move toward the end of the second contact portion 330 away from the inclined portion 320;

[0209] When the opening angle of the door body 30 Is at a certain degree, the abutting portion 410 abuts against the second contact portion 330, and the door seal on the rear wall of the door body 30 fits against the front end face of the box body 110 to effectively seal the connection between the door body 30 and the box body 110. The positioning central axis P can move to the second end of the first track groove 140, and the guiding central axis Q can move to the second end of the second track groove 150.

[0210] In some embodiments of the present application, during the process of the door body 30 rotating and closing, when the positioning central axis P passes through the inflection point of the first track groove 140 and the guiding central axis Q has not moved to the inflection point of the second track groove 150, the door body 30 is at the second set angle. For example, when the door body 30 is at the second set angle, the positioning central axis P passes through the first inflection point U of the first track groove 140, and the guiding central axis Q is located between the first end of the second track groove 150 and the second inflection point V of the second track groove 150, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0211] Exemplarily, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P moves from the curved groove section to the straight groove section, the guiding central axis Q is located in the first curved section, and the guiding central axis Q moves towards the second end of the second track groove 150 within the first curved section.

[0212] When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320, the positioning central axis P passes through the first inflection point U of the first track groove 140, the positioning central axis P is located between the first inflection point U and the second end of the first track groove 140, and the positioning central axis P is located in the straight groove section; the guiding central axis Q has not moved to the second inflection point V of the second track groove 150, the guiding central axis Q is located between the first end and the second inflection point V of the second track groove 150, and the guiding central axis Q is located in the first curved section. The difference between the first set angle and the second set angle is 110 degrees.

[0213] When the opening angle of the door body 30 is set to: the opening angle of the door body 30 is between the second set angle and the third set angle, and the angle corresponding to the second inflection point V can be between the second set angle and the third set angle; the abutting portion 410 abuts against the inclined portion 320, the positioning central axis P is located in the straight groove section, and the guiding central axis Q moves from the first curved section through the second inflection point V of the second track groove 150 to the second curved section.

[0214] When the opening angle of the door body 30 is degrees, the opening angle Set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, the positioning central axis P is located within the straight groove section, and the guiding central axis Q is located within the second curve section. The difference between the second set angle and the third set angle is 15 degrees. When the opening angle of the door body 30 is set to: , the abutting portion 410 abuts against the second contact portion 330.

[0215] The first stage

[0216] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320;

[0217] When the opening angle of the door body 30 is, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P moves from the first end of the first track groove 140 towards the second end of the first track groove 140, the positioning central axis P moves from the curve groove section through the first inflection point U of the first track groove 140 into the straight groove section, the guiding central axis Q moves from the second end of the second track groove 150 towards the second inflection point V of the second track groove 150, and the abutting portion 410 moves from one end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320;

[0218] When the opening angle of the door body 30 degrees, the door body 30 is at the second set angle, the abutting portion 410 can move to the first end of the inclined portion 320, the positioning central axis P passes through the first inflection point U of the first track groove 140, the positioning central axis P is located within the straight groove section, the guiding central axis Q does not move to the second inflection point V of the second track groove 150, and the guiding central axis Q is located within the first curve section;

[0219] The second stage

[0220] When the opening angle of the door body 30 is set to: , the abutting portion 410 abuts against the inclined portion 320, the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410; the positioning central axis P moves within the straight groove towards the second end of the first track groove 140, and the guiding central axis Q moves from the first curve section through the second inflection point V of the second track groove 150 into the second curve section;

[0221] When the opening angle of the door body 30 When the degree is such that the door body 30 is at the third set angle, the abutting portion 410 moves to the second end of the inclined portion 320, the positioning central axis P is located within the linear groove, and the guiding central axis Q is located within the second curve segment.

[0222] The third stage

[0223] When the opening angle of the door body 30 is set to: When it is, the abutting portion 410 abuts against the second contact portion 330, so as to drive the abutting portion 410 to move towards the end of the second contact portion 330 away from the inclined portion 320; when the opening angle of the door body 30 is at a certain degree, the abutting portion 410 abuts against the second contact portion 330, and the door seal on the rear wall of the door body 30 fits against the front end surface of the box body 110, so as to effectively seal the connection between the door body 30 and the box body 110. The positioning central axis P can move to the second end of the first track groove 140, and the guiding central axis Q can move to the second end of the second track groove 150.

[0224] In some embodiments of the present application, during the process of the door body 30 rotating and closing, when the positioning central axis P has not moved to the inflection point of the first track groove 140 and the guiding central axis Q passes through the inflection point of the second track groove 150, the door body 30 is at the second set angle. For example, when the door body 30 is at the second set angle, the positioning central axis P is located between the first end of the first track groove 140 and the first inflection point U of the first track groove 140, and the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0225] Exemplarily, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at the end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is set to: When it is, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P is located within the curve groove, and the guiding central axis Q moves from the first curve segment to within the second curve segment.

[0226] When the opening angle of the door body 30 is at a certain degree, the opening angle of the door body 30 Set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320, the positioning central axis P is located in the curve groove, and the positioning central axis P is located between the first end of the first track groove 140 and the first inflection point U; the guiding central axis Q passes through the second inflection point V of the second track groove 150, the guiding central axis Q is located between the second inflection point V and the second end of the second track groove 150, and the guiding central axis Q is located within the second curve segment. The difference between the first set angle and the second set angle is 110 degrees.

[0227] When the opening angle of the door body 30 Is set to: When, the opening angle of the door body 30 Is between the second set angle and the third set angle, the angle corresponding to the first inflection point U can be between the second set angle and the third set angle; the abutting portion 410 abuts against the inclined portion 320, and the positioning central axis P moves from the curve groove segment through the first inflection point U into the straight groove segment, and the guiding central axis Q is located within the second curve segment;

[0228] When the opening angle of the door body 30 Degrees, the opening angle of the door body 30 Is set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, the positioning central axis P is located in the straight groove segment, and the guiding central axis Q is located within the second curve segment. The difference between the second set angle and the third set angle is 15 degrees. When the opening angle of the door body 30 Is set to: When, the abutting portion 410 abuts against the second contact portion 330.

[0229] The first stage

[0230] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 Is set to 130 degrees, the opening angle of the door body 30 Is set to the first set angle, and the abutting portion 410 is located at the end of the first contact portion 310 away from the inclined portion 320;

[0231] When the opening angle of the door body 30 When, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P moves from the first end of the first track groove 140 towards the second end of the first track groove 140, the positioning central axis P is located in the curve groove segment, the guiding central axis Q moves from the first end of the second track groove 150 through the second inflection point V of the second track groove 150 towards the second end of the second track groove 150, and the abutting portion 410 moves from the end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320;

[0232] When the opening angle of the door body 30 When the degree is such that the door body 30 is at the second set angle, the abutting part 410 can move to the first end of the inclined part 320, the positioning central axis P does not move to the first inflection point U of the first track groove 140, the positioning central axis P is located within the curve groove section, the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the guiding central axis Q is located within the second curve section;

[0233] The second stage

[0234] When the opening angle of the door body 30 is set to: At this time, the abutting part 410 abuts against the inclined part 320, and the door body 30 can drive the abutting part 410 to move downward under the action of gravity, so that the abutting part 410 moves from the first end of the inclined part 320 to the second end of the inclined part 320, and the movable part 400 drives the door body 30 to move downward through the abutting part 410; the positioning central axis P moves from the curve groove section through the first inflection point U of the first track groove 140 to the straight groove, and the guiding central axis Q moves within the second curve section toward the second end of the second track groove 150;

[0235] When the opening angle of the door body 30 is at a certain degree, the door body 30 is at the third set angle, the abutting part 410 moves to the second end of the inclined part 320, the positioning central axis P is located within the straight groove, and the guiding central axis Q is located within the second curve section.

[0236] The third stage

[0237] When the opening angle of the door body 30 is set to: At this time, the abutting part 410 abuts against the second contact part 330 to drive the abutting part 410 to move toward the end of the second contact part 330 away from the inclined part 320; when the opening angle of the door body 30 is at a certain degree, the abutting part 410 abuts against the second contact part 330, and the door seal on the rear wall of the door body 30 fits against the front end face of the box body 110 to effectively seal the connection between the door body 30 and the box body 110. The positioning central axis P can move to the second end of the first track groove 140, and the guiding central axis Q can move to the second end of the second track groove 150.

[0238] Referring to Figures 20 - 23 , in some embodiments, the first track groove 140 includes a first inner groove section 141 and a second inner groove section 142 connecting the first inner groove section 141; the second track groove 150 includes a first outer groove section 151 and a second outer groove section 152 connecting the first outer groove section 151.

[0239] The first track groove 140 further includes a third inner groove section 143 connecting the second inner groove section 142. The third inner groove section 143 is an arc centered on the termination position of the second outer groove section 152. When the door body 30 rotates and opens from the second opening angle to the third opening angle relative to the cabinet body 110 under the action of the hinge assembly 30 and rotates to the third opening angle during the process, the second hinge shaft 170 rotates relative to the second track groove 150 at the termination position of the second outer groove section 152, and the first hinge shaft 160 synchronously moves relative to the first track groove 140 from the starting position of the third inner groove section 143 to the termination position of the third inner groove section 143.

[0240] When the door body 30 rotates and opens from the first opening angle to the second opening angle relative to the cabinet body 110 under the action of the hinge assembly 130, the second hinge shaft 170 moves relative to the second track groove 150. The starting point of the movement is the starting position of the second outer groove section 152, and the ending point of the movement is the termination position of the second outer groove section 152. The first hinge shaft 160 synchronously moves relative to the first track groove 140. The starting point of the movement is the starting position of the second inner groove section 142, and the ending point of the movement is the termination position of the second inner groove section 142;

[0241] The first track groove 140 has two first inflection points U, which are sequentially arranged between the first end of the first track groove 140 and the second end of the first track groove 140. The two first inflection points U divide the first track groove 140 into a first inner groove section 141, a second inner groove section 142, and a third inner groove section 143. The part of the first track groove 140 between the first end of the first track groove 140 and one of the first inflection points U forms the first inner groove section 141. The part of the first track groove 140 between the two first inflection points U forms the second inner groove section 142. The part of the first track groove 140 between the other first inflection point U and the second end of the first track groove 140 forms the third inner groove section 143.

[0242] The second track groove 150 has a second inflection point V. The second inflection point V divides the second track groove 150 into a first outer groove section 151 and a second outer groove section 152. The part of the second track groove 150 between the first end of the second track groove 150 and the second inflection point V forms the first outer groove section 151. The part of the second track groove 150 between the second inflection point V and the second end of the second track groove 150 forms the second outer groove section 152.

[0243] During the process of the door body 30 rotating and opening, the first hinge shaft 160 moves in the first track groove 140 from the first end of the first track groove 140 towards the second end of the first track groove 140, that is, the first hinge shaft 160 moves from the first inner groove section 141 through the second inner groove section 142 towards the third inner groove section 143; the second hinge shaft 170 moves in the second track groove 150 from the first end of the second track groove 150 towards the second end of the second track groove 150, that is, the second hinge shaft 170 moves from the first outer groove section 151 towards the second outer groove section 152.

[0244] During the process of the door body 30 rotating and closing, the first hinge shaft 160 moves in the first track groove 140 from the second end of the first track groove 140 towards the first end of the first track groove 140, that is, the first hinge shaft 160 moves from the third inner groove section 143 through the second inner groove section 142 towards the first inner groove section 141; the second hinge shaft 170 moves in the second track groove 150 from the second end of the second track groove 150 towards the first end of the second track groove 150, that is, the second hinge shaft 170 moves from the second outer groove section 152 towards the first outer groove section 151.

[0245] It should be noted that the second inflection point V can be defined as follows: taking the line connecting the left and right sides of the box body 10 as a reference line perpendicular to it, when the door body 30 is in the closed state, in the plane where the first track groove 140 and the second track groove 150 are located, the reference line forms tangent points with the inner walls on both sides of the second track groove 150, and the center of the connection line of the two tangent points can be determined as the second inflection point V of the second track groove 150. When the length direction of the movable member 400 is parallel to the reference line, the reference line can be set as the length direction of the movable member 400 to make the determination process of the first inflection point U and the second inflection point V more convenient.

[0246] Alternatively, the first inflection point U and the second inflection point V can also be defined as follows: during the process of the door body 30 rotating and opening or rotating and closing, the force-bearing process of the first hinge shaft 160 and the second hinge shaft 170 can be analyzed, or alternatively, the torque of the first hinge shaft 160 and the second hinge shaft 170 can be analyzed. When the force on the first hinge shaft 160 or the torque of the first hinge shaft 160 changes significantly, the first hinge shaft 160 is located at the first inflection point U of the first track groove 140 to determine the time when the first hinge shaft 160 is located at the first inflection point U of the first track groove 140.

[0247] When the force on the second hinge shaft 170 or the torque of the second hinge shaft 170 changes significantly, the second hinge shaft 170 is located at the second inflection point V of the second track groove 150 to determine the time when the second hinge shaft 170 is located at the second inflection point V of the second track groove 150. And, the relative position of the movable member 400 in the vertical direction can also be measured to determine the time when the movable member 400 reaches the first end and the second end of the inclined portion 320.

[0248] In this embodiment, the central axis of the first hinge shaft 160 is denoted as the positioning central axis P, and the central axis of the second hinge shaft 170 is the guiding central axis Q; within the projection on the plane where the top wall of the box body 110 is located, the line segment PQ is denoted as the axis center line segment PQ.

[0249] During the process of the door body 30 rotating and closing, when the positioning central axis P passes through the inflection point of the first track groove 140 and the guiding central axis Q passes through the inflection point of the second track groove 150, the door body 30 is at the second set angle. For example, when the door body 30 is at the second set angle, the positioning central axis P passes through the two first inflection points U of the first track groove 140, and the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0250] Exemplarily, when the opening angle of the door body 30 is set to 130 degrees, the opening angle Figure 20 of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. As shown, when the opening angle

[0251] of the door body 30 is degrees, the opening angle of the door body 30 is Figure 21 set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320. As

[0252] shown, the positioning central axis P passes through the two first inflection points U of the first track groove 140, and the positioning central axis P is located between the other first inflection point U and the first end of the first track groove 140; the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the guiding central axis Q is located between the second inflection point V and the first end of the second track groove 150. The difference between the first set angle and the second set angle is 110 degrees. When the opening angle of the door body 30 is Figure 22 degrees, the opening angle of the door body 30 is When the abutting portion 410 abuts against the second contact portion 330.

[0253] The first stage

[0254] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320;

[0255] As Figure 20 and Figure 21 shown, when the opening angle of the door body 30 is, the abutting portion 410 abuts against the first contact portion 310, and the positioning central axis P moves from the second end of the first track groove 140 towards the first end of the first track groove 140; the positioning central axis P moves through the third inner groove section 143 and the second inner groove section 142 and moves into the first inner groove section 141; the guiding central axis Q moves from the second end of the second track groove 150 through the second inflection point V of the second track groove 150 towards the first end of the second track groove 150, and the abutting portion 410 moves from one end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320;

[0256] When the opening angle of the door body 30 is degrees, the door body 30 is at the second set angle, and the abutting portion 410 can move to the first end of the inclined portion 320. The positioning central axis P passes through the two first inflection points U of the first track groove 140, and the guiding central axis Q passes through the second inflection point V of the second track groove 150;

[0257] The second stage

[0258] When the opening angle of the door body 30 is set to: When, the abutting portion 410 abuts against the inclined portion 320, and the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410;

[0259] As Figure 22 shown, when the opening angle of the door body 30 is degrees, the door body 30 is at the third set angle, and the abutting portion 410 moves to the second end of the inclined portion 320; the positioning central axis P is located in the first inner groove section 141 and moves towards the first end of the first track groove 140; the guiding central axis Q is located in the first outer groove section 151 and moves towards the first end of the second track groove;

[0260] The third stage

[0261] When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the second contact portion 330, so as to drive the abutting portion 410 to move towards one end of the second contact portion 330 away from the inclined portion 320; when the opening angle of the door body 30 is degrees, the abutting portion 410 abuts against the second contact portion 330, and the door seal on the rear wall of the door body 30 fits against the front end surface of the box body 110, so as to effectively seal the connection between the door body 30 and the box body 110.

[0262] In some embodiments of the present application, during the process of the door body 30 rotating and closing, when the positioning central axis P moves to an inflection point of the first track groove 140, the guiding central axis Q moves to the inflection point of the second track groove 150, and the door body 30 is located at the second set angle. For example, when the door body 30 is located at the second set angle, the positioning central axis P passes through one of the first inflection points U of the first track groove 140 and moves to the other first inflection point U of the first track groove 140, and, the guiding central axis Q moves to the second inflection point V of the second track groove 150, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0263] Exemplarily, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the first contact portion 310; the positioning central axis P is located in the second inner groove section 142, and the positioning central axis P is located between the second end of the first track groove 140 and the other first inflection point U; the guiding central axis Q is located in the second outer groove section 152, and the guiding central axis Q is located between the second end of the second track groove 150 and the second inflection point V;

[0264] When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320, the positioning central axis P is located at the other first inflection point U of the first track groove 140, the guiding central axis Q moves to the second inflection point V of the second track groove 150, and the difference between the first set angle and the second set angle is 110 degrees.

[0265] When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 Set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, the positioning central axis P is located in the first inner groove section 141, the guiding central axis Q is located in the first outer groove section 151, and the difference between the second set angle and the third set angle is 15 degrees; when the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the second contact portion 330.

[0266] The first stage

[0267] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320.

[0268] When the opening angle of the door body 30 is such that, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P passes through one of the first inflection points U of the first track groove 140 from the second end of the first track groove 140; the positioning central axis P moves towards the other first inflection point U of the first track groove 140, and the positioning central axis P moves through the third inner groove section 143 and moves into the second inner groove section 142; the guiding central axis Q moves from the second end of the second track groove 150 towards the second inflection point V of the second track groove 150, and the abutting portion 410 moves from one end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320;

[0269] When the opening angle of the door body 30 is at a certain degree, the door body 30 is at the second set angle, the abutting portion 410 can move to the first end of the inclined portion 320, the positioning central axis P moves to the other first inflection point U of the first track groove 140, and the guiding central axis Q moves to the second inflection point V of the second track groove 150;

[0270] The second stage

[0271] When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the inclined portion 320, and the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410;

[0272] When the opening angle of the door body 30 is at a certain degree, the door body 30 is at the third set angle, and the abutting portion 410 moves to the second end of the inclined portion 320;

[0273] The third stage

[0274] When the opening angle of the door body 30 is set to: When it is, the abutting portion 410 abuts against the second contact portion 330, so as to drive the abutting portion 410 to move towards one end of the second contact portion 330 away from the inclined portion 320. When the opening angle of the door body 30 is degrees, the abutting portion 410 abuts against the second contact portion 330, and the door seal on the rear wall of the door body 30 fits against the front end surface of the box body 110, so as to effectively seal the connection between the door body 30 and the box body 110.

[0275] In some embodiments of the present application, during the process of the door body 30 rotating and closing, when the positioning central axis P is between the two inflection points of the first track groove 140, the guiding central axis Q moves to the inflection point of the second track groove 150, and the door body 30 is at the second set angle. For example, when the door body 30 is at the second set angle, the positioning central axis P moves from one of the first inflection points U of the first track groove 140 towards the other first inflection point U of the first track groove 140, and, the guiding central axis Q moves to the second inflection point V of the second track groove 150, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0276] Exemplarily, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 is set to: When it is, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P moves from the third inner groove section 143 to the second inner groove section 142, and the positioning central axis P is between the second end of the first track groove 140 and the other first inflection point U; the guiding central axis Q is located in the second outer groove section 152, and the guiding central axis Q is between the second end of the second track groove 150 and the second inflection point V;

[0277] When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320, the positioning central axis P is between the two inflection points of the first track groove 140, the guiding central axis Q moves to the second inflection point V of the second track groove 150, and the difference between the first set angle and the second set angle is 110 degrees.

[0278] When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 Set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, the positioning central axis P is located in the first inner groove section 141, the guiding central axis Q is located in the first outer groove section 151, and the difference between the second set angle and the third set angle is 15 degrees; when the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the second contact portion 330.

[0279] The first stage

[0280] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is set to 130 degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 410 is located at one end of the first contact portion 310 away from the inclined portion 320;

[0281] When the opening angle of the door body 30 is, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P moves from one first inflection point U of the first track groove 140 towards the other first inflection point U of the first track groove 140, and the positioning central axis P moves through the third inner groove section 143 and moves into the second inner groove section 142; the guiding central axis Q moves from the second end of the second track groove 150 towards the second inflection point V of the second track groove 150; the abutting portion 410 moves from one end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320.

[0282] When the opening angle of the door body 30 degrees, the door body 30 is at the second set angle, the abutting portion 410 can move to the first end of the inclined portion 320, the positioning central axis P moves between the two inflection points of the first track groove 140, and the guiding central axis Q moves to the second inflection point V of the second track groove 150.

[0283] The second stage

[0284] When the opening angle of the door body 30 is set to: the abutting portion 410 abuts against the inclined portion 320, the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, the movable member 400 drives the door body 30 to move downward through the abutting portion 410, and the positioning central axis P moves through the second inner groove section 142 and moves into the inner first inner groove section 141.

[0285] When the opening angle of the door body 30 When the degree is such that the door body 30 is at the third set angle, the abutting portion 410 moves to the second end of the inclined portion 320, and the positioning central axis P passes through another inflection point and moves toward the first end of the first track groove 140;

[0286] The third stage

[0287] When the opening angle of the door body 30 Is set to: At this time, the abutting portion 410 abuts against the second contact portion 330, so as to drive the abutting portion 410 to move toward the end of the second contact portion 330 away from the inclined portion 320; when the opening angle of the door body 30 Is at a certain degree, the abutting portion 410 abuts against the second contact portion 330, and the door seal located on the rear wall of the door body 30 fits against the front end surface of the box body 110, so as to effectively seal the connection between the door body 30 and the box body 110.

[0288] In some embodiments of the present application, during the process of the door body 30 rotating and closing, when the positioning central axis P moves to an inflection point of the first track groove 140, the guiding central axis Q passes through the inflection point of the second track groove 150, and the door body 30 is at the second set angle. For example, when the door body 30 is at the second set angle, the positioning central axis P passes through one of the first inflection points U of the first track groove 140 and moves to the other first inflection point U of the first track groove 140, and further, the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0289] Exemplarily, when the opening angle of the door body 30 Is set to 130 degrees, the opening angle of the door body 30 Is set to the first set angle, and the abutting portion 410 is located at the end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 Is set to: At this time, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P is located in the second inner groove section 142, and the positioning central axis P is located between the second end of the first track groove 140 and the other first inflection point U; the guiding central axis Q moves from the second outer groove section 152 to the first outer groove section 151, and the guiding central axis Q is located between the second inflection point V and the second end of the second track groove 150;

[0290] When the opening angle of the door body 30 Is at a certain degree, the opening angle of the door body 30 Set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320, the positioning central axis P is located at the other first inflection point U of the first track groove 140, the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the difference between the first set angle and the second set angle is 110 degrees.

[0291] When the opening angle of the door body 30 degrees, the opening angle of the door body 30 Set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, the positioning central axis P is located in the first inner groove section 141, the guiding central axis Q is located in the first outer groove section 151, and the difference between the second set angle and the third set angle is 15 degrees; when the opening angle of the door body 30 Set to: When, the abutting portion 410 abuts against the second contact portion 330.

[0292] The first stage

[0293] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 Set to 130 degrees, the opening angle of the door body 30 Set to the first set angle, the abutting portion 410 is located at the end of the first contact portion 310 away from the inclined portion 320;

[0294] When the opening angle of the door body 30 When, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P passes through one of the first inflection points U of the first track groove 140 from the second end of the first track groove 140, the positioning central axis P moves towards the other first inflection point U of the first track groove 140, the positioning central axis P moves through the third inner groove section 143 and moves into the second inner groove section 142, the guiding central axis Q moves from the second end of the second track groove 150 through the second inflection point V towards the first end of the second track groove 150, and the abutting portion 410 moves from the end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320;

[0295] When the opening angle of the door body 30 degrees, the door body 30 is at the second set angle, the abutting portion 410 can move to the first end of the inclined portion 320, the positioning central axis P moves to the other first inflection point U of the first track groove 140, the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the guiding central axis Q is located in the first outer groove section 151;

[0296] The second stage

[0297] When the opening angle of the door body 30 Set to: When the abutting portion 410 abuts against the inclined portion 320, the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320, and the movable member 400 drives the door body 30 to move downward through the abutting portion 410; when the opening angle of the door body 30 degrees, the door body 30 is at the third set angle, and the abutting portion 410 moves to the second end of the inclined portion 320;

[0298] The third stage

[0299] When the opening angle of the door body 30 Is set to: When, the abutting portion 410 abuts against the second contact portion 330, so as to drive the abutting portion 410 to move towards the end of the second contact portion 330 away from the inclined portion 320; when the opening angle of the door body 30 degrees, the abutting portion 410 abuts against the second contact portion 330, and the door seal located on the rear wall of the door body 30 fits against the front end surface of the box body 110, so as to effectively seal the connection between the door body 30 and the box body 110.

[0300] In some embodiments of the present application, during the process of the door body 30 rotating and closing, when the positioning central axis P is between the two inflection points of the first track groove 140, the guiding central axis Q passes through the inflection point of the second track groove 150, and the door body 30 is at the second set angle. For example, when the door body 30 is at the second set angle, when the positioning central axis P moves from one first inflection point U of the first track groove 140 towards the other first inflection point U of the first track groove 140, and, the guiding central axis Q passes through the second inflection point V of the second track groove 150, the abutting portion 410 moves to the first end of the inclined portion 320.

[0301] Exemplarily, when the opening angle of the door body 30 Is set to 130 degrees, the opening angle of the door body 30 Is set to the first set angle, and the abutting portion 410 is located at the end of the first contact portion 310 away from the inclined portion 320. When the opening angle of the door body 30 Is set to: 20 degrees ≤ degrees, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P moves from the third inner groove section 143 to the second inner groove end 142, and the positioning central axis P is between the second end of the first track groove 140 and the other first inflection point U; the guiding central axis Q moves from the second outer groove section 152 to the first outer groove section 151, and the guiding central axis Q is between the second inflection point V and the first end of the second track groove 150;

[0302] When the opening angle of the door body 30 degrees, the opening angle of the door body 30 Set to the second set angle, the abutting portion 410 abuts against the first end of the inclined portion 320, the positioning central axis P is located between the two inflection points of the first track groove 140, the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the difference between the first set angle and the second set angle is 110 degrees.

[0303] When the opening angle of the door body 30 degrees, the opening angle of the door body 30 Set to the third set angle, the abutting portion 410 abuts against the second end of the inclined portion 320, the positioning central axis P is located in the first inner groove section 141, the guiding central axis Q is located in the first outer groove section 151, and the difference between the second set angle and the third set angle is 15 degrees; when the opening angle of the door body 30 Set to: When, the abutting portion 410 abuts against the second contact portion 330.

[0304] The first stage

[0305] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 Set to 130 degrees, the opening angle of the door body 30 Set to the first set angle, the abutting portion 410 is located at the end of the first contact portion 310 away from the inclined portion 320;

[0306] When the opening angle of the door body 30 When, the abutting portion 410 abuts against the first contact portion 310, the positioning central axis P moves from one of the first inflection points U of the first track groove 140 towards the other first inflection point U of the first track groove 140, the positioning central axis P moves through the third inner groove section 143 and moves into the second inner groove section 142, the guiding central axis Q moves from the second end of the second track groove 150 through the second inflection point V towards the first end of the second track groove 150, and the abutting portion 410 moves from the end of the first contact portion 310 away from the inclined portion 320 towards the inclined portion 320;

[0307] When the opening angle of the door body 30 degrees, the door body 30 is at the second set angle, the abutting portion 410 can move to the first end of the inclined portion 320, the positioning central axis P moves to between the two inflection points of the first track groove 140, the guiding central axis Q passes through the second inflection point V of the second track groove 150, and the guiding central axis Q is located in the first outer groove section 151;

[0308] The second stage

[0309] When the opening angle of the door body 30 Set to: When the abutting portion 410 abuts against the inclined portion 320, the door body 30 can drive the abutting portion 410 to move downward under the action of gravity, so that the abutting portion 410 moves from the first end of the inclined portion 320 to the second end of the inclined portion 320. The movable member 400 drives the door body 30 to move downward through the abutting portion 410, and the positioning central axis P moves into the first inner groove section 141 through the second inner groove section 142; when the opening angle of the door body 30 degrees, the door body 30 is at the third set angle, the abutting portion 410 moves to the second end of the inclined portion 320, and the positioning central axis P moves toward the first end of the first track groove 140 through another inflection point;

[0310] The third stage

[0311] When the opening angle of the door body 30 is set to: When, the abutting portion 410 abuts against the second contact portion 330 to drive the abutting portion 410 to move toward the end of the second contact portion 330 away from the inclined portion 320; when the opening angle of the door body 30 degrees, the abutting portion 410 abuts against the second contact portion 330, and the door seal on the rear wall of the door body 30 fits against the front end face of the box body 110 to effectively seal the connection between the door body 30 and the box body 110.

[0312] It should be noted that during the rotation and closing process of the door body 30, "one of the first inflection points U" refers to one of the two first inflection points U that is closer to the second end of the first track groove 140, and "the other first inflection point U" refers to one of the two first inflection points U that is closer to the first end of the first track groove 140.

[0313] The first track groove 140 may further include a plurality of first inflection points U. During the rotation and closing process of the door body 30, "the inflection point of the first track groove 140" may refer to the first first inflection point U among the plurality of first inflection points U. For example, "the positioning central axis P moves to the inflection point of the first track groove 140" may also refer to the positioning central axis P moving to the first first inflection point U; or, "the inflection point of the first track groove 140" may refer to any one of the remaining first inflection points U among the plurality of first inflection points U. For example, "the positioning central axis P moves to the inflection point of the first track groove 140" may mean that the positioning central axis P passes through some first inflection points U and moves to a first inflection point U.

[0314] The second track groove 150 may further include a plurality of second inflection points V. During the process of the door body 30 rotating and closing, the "inflection point of the second track groove 150" may refer to the first second inflection point V among the plurality of second inflection points V. For example, "the guiding central axis Q moves to the inflection point of the second track groove 150" may mean that the guiding central axis Q moves to the first second inflection point V; or, the "inflection point of the second track groove 150" may also refer to any other second inflection point V among the plurality of second inflection points V. For example, "the guiding central axis Q moves to the inflection point of the second track groove 150" may mean that the guiding central axis Q passes through some of the second inflection points V and moves to a second inflection point V.

[0315] During the process of the door body 30 rotating and closing, while the positioning central axis P moves to the inflection point of the first track groove 140, the guiding central axis Q moves to the inflection point of the second track groove 150, and the door body 30 is at the second set angle. For example, when the door body 30 is at the second set angle, the positioning central axis P moves to the inflection point of the first track groove 140, and the guiding central axis Q moves to the inflection point of the second track groove 150, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0316] Or, during the process of the door body 30 rotating and closing, the positioning central axis P passes through the inflection point of the first track groove 140, the guiding central axis Q does not move to the inflection point of the second track groove 150, and the door body 30 does not rotate to the second set angle. When the positioning central axis P passes through the inflection point of the first track groove 140 and the guiding central axis Q moves to the inflection point of the second track groove 150, the door body 30 rotates to the second set angle, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0317] Or, during the process of the door body 30 rotating and closing, when the positioning central axis P does not move to the inflection point of the first track groove 140 and the guiding central axis Q moves to the inflection point of the second track groove 150, the door body 30 does not rotate to the second set angle; when the positioning central axis P moves to the inflection point of the first track groove 140 and the guiding central axis Q passes through the inflection point of the second track groove 150, the door body 30 rotates to the second set angle, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0318] Or, during the process of the door body 30 rotating and closing, while the positioning central axis P moves to the inflection point of the first track groove 140, the guiding central axis Q moves to the inflection point of the second track groove 150, and the door body 30 does not rotate to the second set angle; after the positioning central axis P passes through the inflection point of the first track groove 140 and the guiding central axis Q passes through the inflection point of the second track groove 150, the door body 30 rotates to the second set angle, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0319] Alternatively, during the process of the door body 30 rotating and closing, when the positioning central axis P passes through the inflection point of the first track groove 140, the guiding central axis Q moves to the inflection point of the second track groove 150, the door body 30 is at the second set angle, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0320] Alternatively, during the process of the door body 30 rotating and closing, after the positioning central axis P moves to the inflection point of the first track groove 140 and the guiding central axis Q moves to the inflection point of the second track groove 150, the door body 30 is at the second set angle, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0321] Alternatively, during the process of the door body 30 rotating and closing, before the positioning central axis P moves to the inflection point of the first track groove 140 and the guiding central axis Q moves to the inflection point of the second track groove 150, the door body 30 is at the second set angle, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0322] Alternatively, during the process of the door body 30 rotating and closing, before the positioning central axis P moves to the inflection point of the first track groove 140, the guiding central axis Q moves to the inflection point of the second track groove 150, the door body 30 is at the second set angle, and the abutting portion 410 moves to the first end of the inclined portion 320.

[0323] Referring to Figure 24 and Figure 25 , in some embodiments, the refrigerator further has a cooperating lock hook 420 and a stop portion 111. The stop portion 111 is used to cooperate with the lock hook 420 to achieve locking and unlocking of the door body 30 and the cabinet body 110. Among them, the lock hook 420 can be relatively fixed to one of the cabinet body 110 and the door body 30, and the stop portion 111 can be relatively fixed to the other of the cabinet body 110 and the door body 30.

[0324] Exemplarily, the lock hook 420 can be relatively fixed to the movable member 400. The lock hook 420 extends away from the door side wall and bends towards the door rear wall and towards the door side wall. The opening of the lock hook 420 faces the door side wall, and the free end of the lock hook 420 is closer to the door rear wall than its fixed end.

[0325] Exemplarily, the stop portion 111 can be provided on the side of the hinge plate 131 away from the first body side wall. The stop portion 111 can be relatively fixed to the fixed member 300. A hooking gap is formed on the side of the stop portion 111 close to the cabinet body 110. When the door body 30 is in the closed state, the free end of the lock hook 420 is received in the hooking gap, the stop portion 111 is located inside the lock hook 420, and the lock hook 420 on the door body 30 hooks the stop portion 111 on the hinge plate 131, thereby locking the door body 30 and preventing the door body 30 from not closing tightly, which affects the refrigeration and freezing effects of the refrigerator.

[0326] When the door body 30 is opened, the locking hook 420 is deformed under force to overcome the blocking of the blocking portion 111, and thus disengages from the blocking portion 111.

[0327] Exemplarily, the locking hook 420 includes a connecting portion and a hooking portion. The hooking portion is connected to the connecting portion and bends toward the side close to the rear wall and the side wall of the door. A screw passes through the connecting portion and is inserted into the door body 30 to fixedly connect the connecting portion to the door body 30, thereby strengthening the connection strength between the connecting portion and the door body 30, so that only the hooking portion is deformed when the locking hook 420 disengages from the blocking portion 111.

[0328] The free ends of the hooking portion and / or the blocking portion 111 are all arc-shaped, which is beneficial for the hooking portion to smoothly hook or disengage from the blocking portion 111.

[0329] During the closing process of the door body 30, the free end of the hooking portion gradually approaches the blocking portion 111. When the hooking portion abuts against the blocking portion 111, under the action of the reaction force of the blocking portion 111, the hooking portion is deformed, enabling the blocking portion 111 to enter the hooking portion, and the free end of the hooking portion enters the hooking gap, thereby locking the locking hook 420 with the hinge plate 131 and realizing the locking of the door body 30 with the box body 110.

[0330] It can be understood that during the opening process of the door body 30, the interaction between the hooking portion and the blocking portion 111 is opposite to that during the closing process of the door body 30, which will not be elaborated here.

[0331] During the process of the door body 30 rotating and closing, the positioning central axis P passes through the two first inflection points U of the first track groove 140, that is, the positioning central axis P is located in the first inner groove section, and, when the guiding central axis Q passes through the second inflection point V of the second track groove 150 and the guiding central axis Q is located in the first outer groove section, the door body 30 can be automatically closed under the action of the hooking portion and the blocking portion 111.

[0332] Exemplarily, when the opening angle of the door body 30 is less than or equal to the second set angle, the door body 30 can be automatically closed under the action of the hooking portion and the blocking portion 111; or, when the opening angle of the door body 30 is less than or equal to 30 degrees, the door body 30 can be automatically closed under the action of the hooking portion and the blocking portion 111.

[0333] Or, the positioning central axis P moves to any one of the two first inflection points U of the first track groove 140. For example, the positioning central axis moves to the first inflection point U close to the second end of the first track groove 140 or the first inflection point U close to the first end of the first track groove 140, and / or, the guiding central axis Q moves to the second inflection point V of the second track groove 150, and the door body 30 can be automatically closed under the action of the hooking portion and the blocking portion 111.

[0334] It can be understood that in the second or third stage during the rotation and closing process of the door body 30, the door body 30 gradually approaches the box body 10 to facilitate the separation of the locking hook 420 from the stopper portion 111.

[0335] Referring to Figures 26 - 28 , in some embodiments, in the hinge assembly 130 located at the lower end of the door body 30, the first hinge shaft 160 and the second hinge shaft 170 can be disposed on the surface of the fixed member 300 facing the movable member 400, and both the first hinge shaft 160 and the second hinge shaft 170 can extend upward in the vertical direction; at least one of the first hinge shaft 160 and the second hinge shaft 170 can be disposed between the first contact portion 310 and the inclined portion 320, and both the first track groove 140 and the second track groove 150 can be correspondingly disposed on the surface of the movable member 400 facing the fixed member 300.

[0336] It should be noted that in the extending direction of the first hinge shaft 160 and the second hinge shaft 170, when the first hinge shaft 160 is disposed between the first contact portion 310 and the inclined portion 320, the orthographic projection part of the first hinge shaft 160 is located in the first contact portion 310, and the remaining part of the orthographic projection of the first hinge shaft 160 is located in the inclined portion 320; when the second hinge shaft 170 is disposed between the first contact portion 310 and the inclined portion 320, the orthographic projection part of the second hinge shaft 170 is located in the first contact portion 310, and the remaining part of the orthographic projection of the second hinge shaft 170 is located in the inclined portion 320.

[0337] For example, between the first contact portion 310 and the inclined portion 320, the plane where the first contact portion 310 is located can be used as a reference plane, the part located in the reference plane is the first contact portion 310, and the part with a height lower than the reference plane is the inclined portion 320. The inclined portion 320 coincides with the reference plane to form a positioning line. Exemplarily, when the first hinge shaft 160 is disposed between the first contact portion 310 and the inclined portion 320, the positioning line can pass through the first hinge shaft 160, or the positioning line can also be tangent to or coincide with the edge of the first hinge shaft 160. When the second hinge shaft 170 is disposed between the first contact portion 310 and the inclined portion 320, the positioning line passes through the second hinge shaft 170, or the positioning line can also be tangent to or coincide with the edge of the second hinge shaft 170.

[0338] During the rotation and opening or closing process of the door body 30, in the horizontal direction, the first hinge shaft moves relative to the first track groove 140 along the extending direction of the first track groove 140, and the second hinge shaft moves relative to the second track groove 150 along the extending direction of the second track groove 150; in the vertical direction, when the movable member 400 drives the door body 30 to move in the vertical direction through the abutting portion 410, the fixed member 300 is relatively fixed to the box body 10, so that the first hinge shaft moves relative to the first track groove 140 in the vertical direction, and the second hinge shaft moves relative to the second track groove 150 in the vertical direction.

[0339] Exemplarily, when the movable member 400 drives the door body 30 to move upward through the abutting portion 410, a part of the first hinge shaft 160 extends out of the first track groove 140, and the distance between the first hinge shaft 160 and the bottom surface of the first track groove 140 increases; a part of the second hinge shaft 170 extends out of the second track groove 150, and the distance between the second hinge shaft 170 and the bottom surface of the second track groove 150 increases.

[0340] In some embodiments, the length that the first hinge shaft 160 extends out of the fixing member 300 may be equal to the length that the second hinge shaft 170 extends out of the fixing member 300, the depth of the first track groove 140 is equal to the depth of the second track groove 150, the length that the first hinge shaft 160 extends out of the fixing member 300 may also be greater than the length that the second hinge shaft 170 extends out of the fixing member 300, and the depth of the first track groove 140 is greater than the depth of the second track groove 150.

[0341] The length that the first hinge shaft 160 extends out of the fixing member 300 and the length that the second hinge shaft 170 extends out of the fixing member 300 may be set to be greater than or equal to 6 mm and less than or equal to 15 mm. For example, the length that the first hinge shaft 160 extends out of the fixing member 300 and the length that the second hinge shaft 170 extends out of the fixing member 300 may be set within any one of the length ranges of 6 mm - 8 mm, 8 mm - 10 mm, 10 mm - 12 mm, and 12 mm - 15 mm to ensure the stability of the movement process of the first hinge shaft 160 and the second hinge shaft 170.

[0342] It is easy to understand that the length that the first hinge shaft 160 extends out of the first track groove 140 and the length that the second hinge shaft 170 extends out of the second track groove 150 are equal to the height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction, and the greater the length of the first hinge shaft 160 located in the first track groove 140, the better the stability of the first hinge shaft 160, and the greater the length of the second hinge shaft 170 located in the second track groove 150, the better the stability of the second hinge shaft 170.

[0343] The smaller the length that the first hinge shaft 160 extends out of the fixing member 300 and the length that the second hinge shaft 170 extends out of the fixing member 300, the smaller the torque borne by the first hinge shaft 160 and the second hinge shaft 170, and the better the stability of the first hinge shaft 160 and the second hinge shaft 170.

[0344] For example, when the height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction remains unchanged, the stability of the first hinge shaft 160 in the first track groove 140 can be improved by increasing the length of the first hinge shaft 160 and the depth of the first track groove 140, and the stability of the second hinge shaft 170 in the second track groove 150 can be improved by increasing the length of the second hinge shaft 170 and the depth of the second track groove 150, so as to reduce the possibility of the movable member 400 being disengaged from the fixed member 300.

[0345] For example, when the abutting portion 410 abuts against the second end of the inclined portion 320 or the second contact portion 330, the length of the first hinge shaft 160 located in the first track groove 140 is set to the first length of the first hinge shaft 160, and the length of the second hinge shaft 170 located in the second track groove 150 is set to the first length of the second hinge shaft 170; when the abutting portion 410 abuts against the first end of the inclined portion 320 or the first contact portion 310, the length of the first hinge shaft 160 located in the first track groove 140 is set to the second length of the first hinge shaft 160, and the length of the second hinge shaft 170 located in the second track groove 150 is set to the second length of the second hinge shaft 170.

[0346] Wherein, the difference between the first length and the second length of the first hinge shaft 160 is equal to the height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction. The ratio of the first length to the second length of the first hinge shaft 160 can be set to be greater than or equal to 2 / 3 to ensure the stability of the first hinge shaft 160 moving in the first track groove 140, and the ratio of the first length to the second length of the second hinge shaft 170 can be set to be greater than or equal to 2 / 3 to ensure the stability of the second hinge shaft 170 moving in the second track groove 150.

[0347] For example, the length of the first hinge shaft 160 can be greater than the length of the second hinge shaft 170, and the depth of the first track groove 140 is greater than the depth of the second track groove 150. When the height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction is set to 2 mm, the length of the first hinge shaft 160 can be set to be greater than or equal to 8 mm and less than or equal to 10 mm. For example, the length of the first hinge shaft 160 can be set to 9 mm, and the depth of the first track groove 140 can be set to be greater than or equal to 4 mm and less than or equal to 6 mm. For example, the depth of the first track groove 140 can be set to 5 mm;

[0348] The length of the second hinge shaft 170 can be set to be greater than or equal to 10 mm and less than or equal to 12 mm. For example, the length of the second hinge shaft 170 can be set to 11 mm. The depth of the second track groove 150 can be set to be greater than or equal to 6 mm and less than or equal to 8 mm. For example, the depth of the second track groove 150 can be set to 7 mm.

[0349] When the abutting portion 410 abuts against the second end of the inclined portion 320 or the second contact portion 330, the end of the first hinge shaft 160 facing away from the fixing member 300 can abut against the bottom surface of the first track groove 140. The first length of the first hinge shaft 160 is equal to 5 mm. The end of the second hinge shaft 170 facing away from the fixing member 300 can abut against the bottom surface of the second track groove 150. The first length of the second hinge shaft 170 is equal to 7 mm. When the abutting portion 410 moves to the first end of the inclined portion 320 or the first contact portion 310, the length of the first hinge shaft 160 extending out of the first track groove 140 is equal to 2 mm. The second length of the first hinge shaft 160 is equal to 3 mm. The length of the second hinge shaft 170 extending out of the second track groove 150 is equal to 2 mm. The second length of the second hinge shaft 170 is equal to 5 mm.

[0350] Alternatively, the length of the first hinge shaft 160 can also be equal to the length of the second hinge shaft 170, and the depth of the first track groove 140 is equal to the depth of the second track groove 150. When the height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction is set to 2 mm, the lengths of the first hinge shaft 160 and the second hinge shaft 170 can be set to be greater than or equal to 10 mm and less than or equal to 12 mm. For example, the lengths of the first hinge shaft 160 and the second hinge shaft 170 can be set to 11 mm. The depths of the first track groove 140 and the second track groove 150 can be set to be greater than or equal to 6 mm and less than or equal to 8 mm. For example, the depths of the first track groove 140 and the second track groove 150 can be set within the depth range of 6 mm - 7 mm, or 7 mm - 8 mm.

[0351] When the abutting portion 410 abuts against the second end of the inclined portion 320 or the second contact portion 330, the end of the first hinge shaft 160 facing away from the fixing member 300 can abut against the bottom surface of the first track groove 140. The first length of the first hinge shaft 160 is equal to 7 mm. The end of the second hinge shaft 170 facing away from the fixing member 300 can abut against the bottom surface of the second track groove 150. The first length of the second hinge shaft 170 is equal to 7 mm. When the abutting portion 410 moves to the first end of the inclined portion 320 or the first contact portion 310, the length of the first hinge shaft 160 extending out of the first track groove 140 is equal to 2 mm. The second length of the first hinge shaft 160 is equal to 5 mm. The length of the second hinge shaft 170 extending out of the second track groove 150 is equal to 2 mm. The second length of the second hinge shaft 170 is equal to 5 mm.

[0352] Exemplarily, the included angle between the line connecting the first hinge axis 160 and the second hinge axis 170 and the line connecting the first end of the inclined portion 320 and the second end of the inclined portion 320 can be set to be greater than or equal to 0 degrees and less than or equal to 15 degrees; for example, the included angle between the line connecting the first hinge axis 160 and the second hinge axis 170 and the line connecting the first end of the inclined portion 320 and the second end of the inclined portion 320 can be set within any one of the included angle ranges of 0 degrees - 5 degrees, 5 degrees - 10 degrees, and 10 degrees - 15 degrees to ensure the stability of the abutting portion 410 during the movement along the inclined portion 320.

[0353] That is, the included angle between the line connecting the first hinge axis 160 and the second hinge axis 170 and the extending direction of the inclined portion 320 can be set to be greater than or equal to 75 degrees and less than or equal to 105 degrees, and the extending direction of the inclined portion 320 can be perpendicularly set to the moving direction of the abutting portion 410 on the surface of the inclined portion 320. For example, the included angle between the line connecting the first hinge axis 160 and the second hinge axis 170 and the extending direction of the inclined portion 320 can be set within any one of the included angle ranges of 75 degrees - 80 degrees, 80 degrees - 85 degrees, 85 degrees - 90 degrees, 90 degrees - 95 degrees, 95 degrees - 100 degrees, and 100 degrees - 105 degrees to ensure the stability of the abutting portion 410 during the movement along the inclined portion 320.

[0354] During the process that the abutting portion 410 moves obliquely downward from the first end of the inclined portion 320 to the second end of the inclined portion 320, the moving direction of the abutting portion is relatively parallel to the line connecting the first hinge axis 160 and the second hinge axis 170;

[0355] It should be noted that relatively parallel can be understood as that the included angle formed by the moving direction of the abutting portion 410 on the surface of the inclined portion 30 and the line connecting the first hinge axis 160 and the second hinge axis 170 is relatively small. For example, the included angle formed by the moving direction of the abutting portion 410 on the surface of the inclined portion 30 and the line connecting the first hinge axis 160 and the second hinge axis 170 can be set to be greater than or equal to 0 degrees and less than or equal to 15 degrees to make the movement process of the abutting portion 410 more stable.

[0356] The diameters of the first hinge axis 160 and the second hinge axis 170 can be set to be the same, or alternatively, the diameters of the first hinge axis 160 and the second hinge axis 170 can also be set to be different. For example, one of the first hinge axis 160 and the second hinge axis 170 serves as the main axis of the gravity self - closing structure, and the other of the first hinge axis 160 and the second hinge axis 170 serves as the secondary axis of the gravity self - closing structure. Among them, the force on the main axis of the gravity self - closing structure is greater than the force on the secondary axis of the gravity self - closing structure, so the diameter of the main axis of the gravity self - closing structure is greater than the diameter of the secondary axis of the gravity self - closing structure to ensure the stability of the gravity self - closing structure and reduce the possibility of deformation of the main axis of the gravity self - closing structure.

[0357] The diameters of the first hinge shaft 160 and the second hinge shaft 170 can be set to be greater than or equal to 7 mm and less than or equal to 9 mm. For example, the diameters of the first hinge shaft 160 and the second hinge shaft 170 can be set within the diameter ranges of 7 mm - 8 mm, or 8 mm - 9 mm, etc.

[0358] Alternatively, the diameters of the first hinge shaft 160 and the second hinge shaft 170 can be set within the diameter ranges of 6.6 mm - 6.9 mm, or 7.3 mm - 7.9 mm, 8.1 mm - 8.9 mm, 9.1 mm - 9.9 mm, and 10.1 mm - 10.9 mm, etc.

[0359] The materials of the first hinge shaft 160 and the second hinge shaft 170 can both be set to cold-forged steel, and the yield strengths of the first hinge shaft 160 and the second hinge shaft 170 are greater than or equal to 260 MPa and less than or equal to 400 MPa to ensure the strength of the first hinge shaft 160 and the second hinge shaft 170 and reduce the possibility of the first hinge shaft 160 and the second hinge shaft 170 breaking.

[0360] It is easy to understand that the diameters of the first hinge shaft 160 and the second hinge shaft 170 can be adjusted according to the thickness of the door body 30. When the thickness of the door body 30 is greater, the diameters of the first hinge shaft 160 and the second hinge shaft 170 can be larger, and the assembly space for the first hinge shaft 160 and the second hinge shaft 170 is larger.

[0361] Exemplarily, the ratio of the diameters of the first hinge shaft 160 and the second hinge shaft 170 to the thickness of the door body 30 can be set to be greater than or equal to one-tenth and less than or equal to one-sixth to ensure the assembly space for the first hinge shaft 160 and the second hinge shaft 170 and reduce the possibility of the first hinge shaft 160 and the second hinge shaft 170 breaking. For example, the thickness of the door body 30 can be set to 60 mm, and the diameters of the first hinge shaft 160 and the second hinge shaft 170 can be set to 8 mm.

[0362] It is easy to understand that when the ratio of the diameters of the first hinge shaft 160 and the second hinge shaft 170 to the thickness of the door body 30 is larger, the possibility of the first hinge shaft 160 and the second hinge shaft 170 breaking is smaller, and the rotation of the door body 30 to open or close is more stable; when the ratio of the diameters of the first hinge shaft 160 and the second hinge shaft 170 to the thickness of the door body 30 is smaller, the assembly space for the first hinge shaft 160 and the second hinge shaft 170 is larger, and the arrangement of the first track groove 140 and the second track groove 150 is more flexible.

[0363] During the process of rotating to open or close the door body 30, in the horizontal direction, the first hinge shaft 160 can move relative to the first track groove 140 along the extension direction of the first track groove 140, and the second hinge shaft 170 can move relative to the second track groove 150 along the extension direction of the second track groove 150.

[0364] In the vertical direction, the first hinge shaft 160 moves up and down relative to the first track groove 140, and the second hinge shaft 170 moves up and down relative to the second track groove 150, such that the first hinge shaft 160 and the second hinge shaft 170 need to simultaneously bear forces from the horizontal direction and the vertical direction. By setting the diameters of the first hinge shaft 160 and the second hinge shaft 170 to be greater than or equal to 7 mm, and the yield strengths of the first hinge shaft 160 and the second hinge shaft 170 to be greater than or equal to 260 Mpa, the possibility of deformation and other phenomena of the first hinge shaft 160 and the second hinge shaft 170 due to the applied forces is reduced, and the stability of the first hinge shaft 160 and the second hinge shaft 170 is improved.

[0365] The included angle between the line connecting the first hinge shaft 160 and the second hinge shaft 170 and the line connecting the first end of the inclined portion 320 and the second end of the inclined portion 320 can be set to be greater than or equal to 0 degrees and less than or equal to 15 degrees; that is, the included angle between the line connecting the first hinge shaft 160 and the second hinge shaft 170 and the extension direction of the inclined portion 320 can be set to be greater than or equal to 75 degrees and less than or equal to 105 degrees. Exemplarily, in the horizontal plane, the angle between the line connecting the first hinge shaft 160 and the second hinge shaft 170 and the extension direction of the door body is greater than or equal to 15 degrees and less than or equal to 45 degrees.

[0366] When the distance between the first hinge shaft 160 and the second hinge shaft 170 is fixed, the larger the included angle between the line connecting the first hinge shaft 160 and the second hinge shaft 170 and the line connecting the first end of the inclined portion 320 and the second end of the inclined portion 320, the larger the layout space required for the gravity self-closing structure, and the larger the required thickness of the door body 30.

[0367] It should be noted that the distance between the first hinge shaft 160 and the second hinge shaft 170 can be greater than or equal to 16 mm and less than or equal to 20 mm. For example, the distance between the first hinge shaft 160 and the second hinge shaft 170 can be set within any one of the distance ranges of 16 mm - 17 mm, 17 mm - 18 mm, 18 mm - 19 mm, and 19 mm - 20 mm, so that the arrangement between the first track groove 140 and the second track groove 150 is more compact, thereby enabling the diameters of the first hinge shaft 160 and the second hinge shaft 170 to be increased, and improving the stability of the first hinge shaft 160 and the second hinge shaft 170.

[0368] It is easily understandable that the weight of the door body 30 can be set to be greater than or equal to 10 kg, so as to improve the self-closing effect of the gravity self-closing structure that utilizes the gravity of the door body 30. Moreover, when the weight of the door body 30 is greater than or equal to 10 kg, by setting the diameters of the first hinge shaft 160 and the second hinge shaft 170 to be greater than or equal to 7 mm, and the yield strength of the first hinge shaft 160 and the second hinge shaft 170 to be greater than or equal to 260 Mpa, the possibility of deformation and other phenomena of the first hinge shaft 160 and the second hinge shaft 170 due to stress is reduced.

[0369] When the thickness of the door body 30 is greater, the layout space of the gravity self-closing structure is larger, the distance between the first hinge shaft 160 and the second hinge shaft 170 increases, and the diameters of the first hinge shaft 160 and the second hinge shaft 170 can also increase. By setting the ratio of the diameters of the first hinge shaft 160 and the second hinge shaft 170 to the thickness of the door body 30 to be greater than or equal to one-tenth and less than or equal to one-sixth, the layout space of the gravity self-closing structure is ensured, and the first hinge shaft 160 and the second hinge shaft 170 in the gravity self-closing structure can obtain larger diameters to improve the strength of the first hinge shaft 160 and the second hinge shaft 170.

[0370] In some embodiments, in the hinge assembly 130 located at the upper end of the door body 30, the first hinge shaft 160 and the second hinge shaft 170 can be arranged on the hinge plate 131, and the first hinge shaft 160 and the second hinge shaft 170 extend vertically downward. The door body 30 is correspondingly provided with a first track groove 140 and a second track groove 150. When the movable member 400 drives the door body 30 to move upward through the abutting portion 410, a part of the first hinge shaft 160 extends into the first track groove 140, and the distance between the first hinge shaft 160 and the bottom surface of the first track groove 140 decreases; a part of the second hinge shaft 170 extends into the second track groove 150, and the distance between the second hinge shaft 170 and the bottom surface of the second track groove 150 decreases.

[0371] Exemplarily, when the abutting portion 410 abuts against the first contact portion 310 or the second contact portion 330, there is a first interval between the first hinge shaft 160 and the bottom surface of the first track groove 140, and there is a second interval between the second hinge shaft 170 and the bottom surface of the second track groove 150. The first interval and the second interval can be determined according to the height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction, and the first interval and the second interval are greater than or equal to the height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction.

[0372] For example, the sizes of the first interval and the second interval can be set to be greater than or equal to 3 millimeters and less than or equal to 5 millimeters. The sizes of the first interval and the second interval can be set within any one of the interval ranges of 3 millimeters - 3.5 millimeters, 3.5 millimeters - 4 millimeters, 4 millimeters - 4.5 millimeters, and 4.5 millimeters - 5 millimeters, so as to set a certain margin through the first interval and the second interval and reduce the possibility of mutual collision between the first hinge shaft 160 and the bottom surface of the first track groove 140, the second hinge shaft 170 and the bottom surface of the second track groove 150.

[0373] Referring to Figure 11 , an end cover 31 can be provided at the upper end of the door body 30. The end cover 31 can be relatively fixedly arranged on the door body 30. In the thickness direction of the door body 30, the width of the end cover 31 is equal to the thickness of the door body 30; the end cover 31 can be provided with a bushing 32. The bushing 32 can be embedded in the end cover 31. The top surface of the bushing 32 is recessed relative to the top surface of the end cover 31. The height difference between the top surface of the end cover 31 and the top surface of the bushing 32 can be greater than or equal to 0.5 millimeter and less than or equal to 1.5 millimeters. For example, the height difference between the top surface of the end cover 31 and the top surface of the bushing 32 can be set within any one of the height difference ranges of 0.5 millimeter - 0.8 millimeter, 0.8 millimeter - 1 millimeter, 1 millimeter - 1.2 millimeters, and 1.2 millimeters - 1.5 millimeters.

[0374] In the vertical direction, the height of the top surface of the bushing 32 is lower than the height of the top surface of the cabinet 10, and the height difference between the top surface of the cabinet 10 and the top surface of the bushing 32 is greater than or equal to 4 millimeters and less than or equal to 7 millimeters. For example, the height difference between the top surface of the cabinet 10 and the top surface of the bushing 32 can be set within any one of the height difference ranges of 4 millimeters - 5 millimeters, 5 millimeters - 6 millimeters, and 6 millimeters - 7 millimeters, so that the door body 30 drives the bushing 32 to move up and down in the vertical direction.

[0375] The bushing 32 is provided with a first track groove 140 and a second track groove 150, and the bushing 32 is correspondingly arranged on the hinge plate 131, so that the first hinge shaft 160 located on the hinge plate 131 moves relative to the first track groove 140 of the bushing 32, and the second hinge shaft 170 located on the hinge plate 131 moves relative to the second track groove 150 of the bushing 32.

[0376] During the process of rotating and opening or rotating and closing the door body 30, for the hinge assembly 130 located at the upper end of the door body 30, in the horizontal direction, the first hinge shaft 160 can move relative to the first track groove 140 along the extension direction of the first track groove 140, and the second hinge shaft 170 can move relative to the second track groove 150 along the extension direction of the second track groove 150; in the vertical direction, the first hinge shaft 160 moves up and down relative to the first track groove 140, and the second hinge shaft 170 moves up and down relative to the second track groove 150.

[0377] It should be noted that the first hinge shaft 160 and the second hinge shaft 170 located at the upper end of the door body 30 are correspondingly arranged with the first hinge shaft 160 and the second hinge shaft 170 in the gravity self-closing structure. The first hinge shaft 160 located at the upper end of the door body 30 is coaxially arranged with the first hinge shaft 160 in the gravity self-closing structure, and the second hinge shaft 170 located at the upper end of the door body 30 is coaxially arranged with the second hinge shaft 170 in the gravity self-closing structure, so as to make the rotation process of the door body 30 more stable.

[0378] Moreover, the diameter of the first hinge shaft 160 located at the upper end of the door body 30 can be less than or equal to that of the first hinge shaft 160 in the gravity self-closing structure, and the diameter of the second hinge shaft 170 located at the upper end of the door body 30 can be less than or equal to that of the second hinge shaft 170 in the gravity self-closing structure. For example, the thickness of the door body 30 can be set to 60 mm, the diameters of the first hinge shaft 160 and the second hinge shaft 170 in the gravity self-closing structure can be set to 8 mm, and the diameters of the first hinge shaft 160 and the second hinge shaft 170 located at the upper end of the door body 30 can both be set to 6 mm or 7 mm.

[0379] In addition, for the hinge assembly 130 located at the upper end of the door body 30, the hinge plate 131 can be provided with a gasket 132. The gasket 132 is used to fix the first hinge shaft 160 and the second hinge shaft 170, so as to make the installation of the first hinge shaft 160 and the second hinge shaft 170 more stable; the gasket can be sleeved on the outer sides of the first hinge shaft 160 and the second hinge shaft 170, and the number of gaskets can be set to one or two. For example, the first hinge shaft 160 and the second hinge shaft 170 can be fixed respectively by two gaskets, or the first hinge shaft 160 and the second hinge shaft 170 can also be fixed simultaneously by one gasket.

[0380] The thickness of the gasket can be set to be greater than or equal to 0.6 mm and less than or equal to 1.5 mm. For example, the thickness of the gasket can be set within any one of the thickness ranges of 0.6 mm - 0.8 mm, 0.8 mm - 1 mm, 1 mm - 1.2 mm, and 1.2 mm - 1.5 mm.

[0381] When the thickness of the gasket is larger, the connection between the first hinge shaft 160 and the second hinge shaft 170 and the hinge plate 131 is more stable. When the thickness of the gasket is smaller, the lengths of the first hinge shaft 160 and the second hinge shaft 170 protruding from the gasket are larger. When the depth of the bushing remains unchanged, the smaller the thickness of the gasket, the smaller the total length of the first hinge shaft 160 and the second hinge shaft 170, and the more compact the structure of the hinge assembly 130 located at the upper end of the door body 30, so that the assembly space required for the hinge assembly 130 located at the upper end of the door body 30 is smaller.

[0382] Refer to Figures 26 - 28, in some embodiments, the fixing member 300 includes a first contact portion 310, an inclined portion 320, and a second contact portion 330 that are connected to each other. The fixing member 300 contacts the movable member 400 through the first contact portion 310, the inclined portion 320, and the second contact portion 330. The third surface of the fixing member 300 faces the movable member 400, and the fourth surface of the fixing member 300 faces away from the movable member 400. The surfaces of the first contact portion 310, the inclined portion 320, and the second contact portion 330 that face the movable member 400 together form the third surface of the fixing member 300, so as to increase the contact area between the movable member 400 and the fixing member 300 and improve the stability of the contact between the movable member 400 and the fixing member 300.

[0383] Both the first contact portion 310 and the second contact portion 330 can be arranged in parallel in the horizontal direction. The height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction can be set to be greater than or equal to 1 mm and less than or equal to 5 mm. For example, the height difference between the first contact portion 310 and the second contact portion 330 in the vertical direction can be set within any one of the height difference ranges of 1 mm - 1.5 mm, 1.5 mm - 2 mm, 2 mm - 2.5 mm, 2.5 mm - 3 mm, 3 mm - 3.5 mm, 3.5 mm - 4 mm, 4 mm - 4.5 mm, and 4.5 mm - 5 mm, so as to weaken the sense of jerk of the user during the door closing process.

[0384] Alternatively, in some embodiments, at least one of the first contact portion 310 and the second contact portion 330 can also be inclined. The inclination directions of the first contact portion 310 and the second contact portion 330 are the same as or different from the inclination direction of the inclined portion 320, and the inclination angles of the first contact portion 310 and the second contact portion 330 can be less than or greater than the inclination angle of the inclined portion 320, so as to further improve the door closing effect of the gravity self-closing structure.

[0385] The height difference between the first end of the inclined portion 320 and the second end of the inclined portion 320 in the vertical direction can be set to be greater than or equal to 1 mm and less than or equal to 5 mm. For example, the height difference between the first end of the inclined portion 320 and the second end of the inclined portion 320 in the vertical direction can be set within any one of the height difference ranges of 1 mm - 1.5 mm, 1.5 mm - 2 mm, 2 mm - 2.5 mm, 2.5 mm - 3 mm, 3 mm - 3.5 mm, 3.5 mm - 4 mm, 4 mm - 4.5 mm, and 4.5 mm - 5 mm, so as to weaken the sense of jerk of the user during the door closing process.

[0386] It is easy to understand that the height difference between the first contact part 310 and the second contact part 330 in the vertical direction, and the height difference between the first end of the inclined part 320 and the second end of the inclined part 320 in the vertical direction can both be equal to the moving distance of the door body 30 in the vertical direction during the rotation opening or rotation closing process; the smaller the height difference between the first contact part 310 and the second contact part 330 in the vertical direction, and the smaller the height difference between the first end of the inclined part 320 and the second end of the inclined part 320 in the vertical direction, the smaller the moving distance of the door body 30 in the vertical direction during the rotation opening or rotation closing process.

[0387] Moreover, the smaller the moving distance of the door body 30 in the vertical direction during the rotation opening or rotation closing process, the smaller the sense of jerk of the user during the opening and closing processes of the door. The larger the moving distance of the door body 30 in the vertical direction during the rotation opening or rotation closing process, the better the gravity self-closing effect of the door body 30, and the greater the force required by the user during the opening process of the door.

[0388] When the inclination angle of the inclined part 320 is smaller, the sense of jerk of the user during the closing process of the door is smaller. The inclination angle of the inclined part 320 can be set to be less than or equal to 40 degrees. For example, the inclination angle of the inclined part 320 can be set within any one of the inclination angle ranges of 10 degrees - 15 degrees, 15 degrees - 20 degrees, 20 degrees - 25 degrees, 25 degrees - 30 degrees, 30 degrees - 35 degrees, and 35 degrees - 40 degrees to weaken the sense of jerk of the user during the closing process of the door.

[0389] The inclination angle of the inclined part 320 can be determined according to the vertical height difference between the first end of the inclined part 320 and the second end of the inclined part 320 in the vertical direction, and the horizontal distance between the first end of the inclined part 320 and the second end of the inclined part 320 in the horizontal direction. That is, when the vertical height difference between the first end of the inclined part 320 and the second end of the inclined part 320 is constant, the larger the horizontal distance between the first end of the inclined part 320 and the second end of the inclined part 320, the smaller the inclination angle of the inclined part 320; when the horizontal distance between the first end of the inclined part 320 and the second end of the inclined part 320 is constant, the larger the vertical height difference between the first end of the inclined part 320 and the second end of the inclined part 320, the larger the inclination angle of the inclined part 320.

[0390] It should be noted that the first end of the inclined part 320 can be determined by the reference plane of the plane where the first contact part 310 is located; for example, between the first contact part 310 and the inclined part 320, the plane where the first contact part 310 is located can be used as the reference plane. The part located on the reference plane is the first contact part 310, and the part with a height lower than the reference plane is the inclined part 320. The inclined part 320 coincides with the reference plane to form a positioning line, that is, the first end of the inclined part 320 forms the above positioning line, and the position where the positioning line is located can be used to represent the first end of the inclined part 320.

[0391] The second end of the inclined portion 320 can be set such that when the door body 30 is in the closed state, the horizontal plane where the bottom end of the abutting portion 410 provided on the door body 30 is set as the reference plane, and the intersection of the reference plane and the inclined portion 320 is the second end of the inclined portion 320; and the bottom end of the inclined portion 320 can be used to connect the second contact portion 330.

[0392] It is easy to understand that when the length of the inclined portion 320 is relatively long, that is, when the door body 30 is in the closed state, the first part of the inclined portion 320 can be located above the reference plane, and the first part of the inclined portion 320 is used to contact the abutting portion 410; the second part of the inclined portion 320 can be located below the reference plane, and the second part of the inclined portion 320 can be used to connect structures such as the hinge plate 131. Then, both the first end and the second end of the inclined portion 320 are the first part of the inclined portion 320, and the second part of the inclined portion 320 is not used to contact the abutting portion 410, so that the second end of the inclined portion 320 can be connected to the second contact portion 330 through the second part of the inclined portion 320.

[0393] Refer to Figure 26 , the inclined portion 320 can be set as a planar inclined portion 320. The planar inclined portion 320 has a plane. The first end of the planar inclined portion 320 can be directly connected to the first contact portion 310, or the first end of the planar inclined portion 320 can also be connected to the first contact portion 310 by means of arc transition. The planar inclined portion 320 can have the above-mentioned connected first part and second part. The first part of the planar inclined portion 320 can be used to contact the abutting portion 410, and the second part of the planar inclined portion 320 can be used to connect installation basic structures such as the hinge plate 131.

[0394] Alternatively, the bottom end of the planar inclined portion 320 can be used to form the second end of the planar inclined portion 320, that is, the bottom end of the planar inclined portion 320 can be used to connect installation basic structures such as the hinge plate 131, or the bottom end of the planar inclined portion 320 can also be used to connect the second contact portion 330.

[0395] Refer to Figure 27, in some embodiments, the inclined portion 320 can also be set as an arc-shaped inclined portion 320. The arc-shaped inclined portion 320 has an arc surface. The arc-shaped inclined portion 320 can protrude away from the first contact portion 310, that is, from the first end to the second end of the arc-shaped inclined portion 320, the inclination angle of the arc-shaped inclined portion 320 gradually increases; during the process of the door body 30 rotating and opening, the abutting portion 410 needs to move from the second end of the arc-shaped inclined portion 320 to the first end of the arc-shaped inclined portion 320. Since the inclination angle of the part of the arc-shaped inclined portion 320 close to the second end is larger, it makes the process of the abutting portion 410 moving to the arc-shaped inclined portion 320 more laborious, further improving the self-closing effect of the gravity self-closing structure.

[0396] Alternatively, the arc-shaped inclined portion 320 can also be concave away from the first contact portion 310, that is, from the first end to the second end of the arc-shaped inclined portion 320, the inclination angle of the arc-shaped inclined portion 320 gradually decreases. During the process of the door body 30 rotating and opening, the abutting portion 410 needs to move from the second end of the arc-shaped inclined portion 320 to the first end of the arc-shaped inclined portion 320. When the weight of the door body 30 is large or the inclination angle of the arc-shaped inclined portion 320 is large, the gravity self-closing effect of the gravity self-closing structure can be ensured. Since the inclination angle of the part of the arc-shaped inclined portion 320 close to the second end is small, it makes the process of the abutting portion 410 moving to the arc-shaped inclined portion 320 more labor-saving, making the process of the user rotating and opening the door body 30 more convenient.

[0397] In some embodiments, the inclined portion 320 can also have multiple planes or multiple arc surfaces. Alternatively, the inclined portion 320 can also have at least one plane and at least one arc surface, and the above-mentioned planes and arc surfaces are all used to contact the abutting portion 410.

[0398] The inclined portion 320 can have multiple planes. The multiple planes are arranged in sequence in the vertical direction, and at least two of the multiple planes have different inclination angles. Exemplarily, from the first end to the second end of the inclined portion 320, the inclination angles of the multiple planes can gradually decrease. When the weight of the door body 30 is large or the inclination angle of the arc-shaped inclined portion 320 is large, the gravity self-closing effect of the gravity self-closing structure can be ensured. Since the inclination angle of the part of the inclined portion 320 close to the second end is small, it makes the process of the abutting portion 410 moving to the inclined portion 320 more labor-saving, making the process of the user rotating and opening the door body 30 more convenient.

[0399] Exemplarily, from the first end to the second end of the inclined portion 320, the inclination angles of multiple planes can gradually increase. During the process of the door body 30 rotating and opening, the abutting portion 410 needs to move from the second end of the inclined portion 320 to the first end of the inclined portion 320. Since the inclination angles of some planes near the second end of the inclined portion 320 are relatively large, it makes the movement of the abutting portion 410 to the inclined portion 320 more laborious, further improving the self-closing effect of the gravity self-closing structure.

[0400] The inclined portion 320 can have multiple arc-shaped surfaces. The arc-shaped surfaces can protrude away from the first contact portion 310, and the inclination angle of the upper part of the arc-shaped surface is greater than that of the lower part of the arc-shaped surface; alternatively, the arc-shaped surface can also be concave away from the first contact portion 310, and the inclination angle of the upper part of the arc-shaped surface is less than that of the lower part of the arc-shaped surface.

[0401] Referring to Figure 28 , in some embodiments, the fixing member 300 can also be provided with at least one recessed structure 380. The recessed structure 380 can be provided in at least one of the first contact portion 310, the inclined portion 320, and the second contact portion 330. For example, the recessed structure 380 can be provided in the inclined portion 320, and the number of the recessed structures 380 can be set to be multiple. The multiple recessed structures 380 can be evenly provided in the inclined portion 320 to increase the stress received by the inclined portion 320.

[0402] When the abutting portion 410 is in contact with the inclined portion 320, the abutting portion 410 will transfer a part of the gravity of the door body 30 to the fixing member 300. By providing the recessed structure 380, the contact area between the abutting portion 410 and the inclined portion 320 can be reduced, so that the stress between the abutting portion 410 and the inclined portion 320 is more concentrated, improving the self-closing effect of the gravity self-closing structure.

[0403] Referring to Figure 29 and Figure 30 , in some embodiments, the abutting portion 410 can be reused to form the first track groove 140 and the second track groove 150, that is, the first hinge shaft 160 and the second hinge shaft 170 can pass through the abutting portion 410, so that at least a part of the abutting portion 410 can surround the first hinge shaft 160 and the second hinge shaft 170, enabling the first hinge shaft 160 and the second hinge shaft 170 to be inside the abutting portion 410, and also increasing the contact area between the abutting portion 410 and the fixing member 300. Thus, when the abutting portion 410 and the fixing member 300 generate relative movement, the relative stability of the abutting portion 410 is increased.

[0404] Referring to Figure 31 and Figure 32, in some embodiments, the abutting portion may be formed with a first side wall 414 and a second side wall 415. The inner surface of the first side wall 414 encloses and forms a first track groove 140, and the inner surface of the second side wall 415 encloses and forms a second track groove 150. To surround the first hinge shaft 160 through the first side wall 414 and surround the second hinge shaft 170 through the second side wall 415, thereby increasing the contact area between the abutting portion 410 and the fixing member 300 and enhancing the stability of the moving process of the abutting portion 410.

[0405] The first side wall and the second side wall are configured such that: the width of the first side wall 414 is greater than or equal to 1 mm, and / or the width of the second side wall 415 is greater than or equal to 1 mm; along the extending direction of the first track groove 140, the width of the first side wall 414 can be uniformly set, and the width of the first side wall 414 can be set within any one of the width ranges of 1 mm - 1.2 mm, 1.2 mm - 1.4 mm, 1.4 mm - 1.6 mm, 1.6 mm - 1.8 mm, 1.8 mm - 2 mm, and 2 mm - 2.2 mm. Along the extending direction of the second track groove 150, the width of the second side wall 415 can be uniformly set, and the width of the second side wall 415 can be set within any one of the width ranges of 1 mm - 1.2 mm, 1.2 mm - 1.4 mm, 1.4 mm - 1.6 mm, 1.6 mm - 1.8 mm, 1.8 mm - 2 mm, and 2 mm - 2.2 mm.

[0406] It is easy to understand that when the widths of the first side wall 414 and the second side wall 415 are larger, the contact area between the abutting portion 410 and the fixing member 300 is larger, making the moving process of the abutting portion 410 relative to the fixing member 300 more stable.

[0407] Alternatively, the first side wall and the second side wall are configured such that: along the extending direction of the first track groove 140, the width of at least a part of the first side wall 414 is greater than or equal to 1 mm, and / or along the extending direction of the second track groove 150, the width of at least a part of the second side wall 415 is greater than or equal to 1 mm.

[0408] Along the extending direction of the first track groove 140, the width of the first side wall 414 may be non-uniform. The width of at least a part of the first side wall 414 may be set within any one of the width ranges of 1 mm - 1.2 mm, 1.2 mm - 1.4 mm, 1.4 mm - 1.6 mm, 1.6 mm - 1.8 mm, 1.8 mm - 2 mm, and 2 mm - 2.2 mm. Along the extending direction of the second track groove 150, the width of the second side wall 415 may be non-uniform. The width of at least a part of the second side wall 415 may be set within any one of the width ranges of 1 mm - 1.2 mm, 1.2 mm - 1.4 mm, 1.4 mm - 1.6 mm, 1.6 mm - 1.8 mm, 1.8 mm - 2 mm, and 2 mm - 2.2 mm.

[0409] The first side wall 414 and the second side wall 415 are arranged at intervals, or the first side wall 414 and the second side wall 415 are connected; or the first side wall 414 is connected to the second side wall 415, and at least a part of the first side wall 414 is reused to form the second side wall 415; or the first side wall 414 is connected to the second side wall 415, and at least a part of the second side wall 415 is reused to form the first side wall 414, so as to reduce the assembly space required for the abutting portion 410 and simplify the structure of the abutting portion 410.

[0410] In some embodiments, the number of the abutting portions may be set to be multiple. The multiple abutting portions 410 include a first abutting portion 410a and at least one second abutting portion 410b. The first abutting portion 410a forms the first track groove 140 and the second track groove 150; the second abutting portion 410b is arranged on the surface of the movable member 400 facing the fixed member 300, and the surface of the second abutting portion 410b facing away from the movable member 400 is flush with the first abutting portion 410a, and the movable member 400 abuts against the fixed member 300 through the first abutting portion 410a and the second abutting portion 410b.

[0411] Along the extending direction of the first track groove 140, at least a part of the second abutting portion 410b is arranged on the side of the first track groove 140 away from the second track groove 150; and / or along the extending direction of the second track groove 150, at least a part of the second abutting portion 410b is arranged on the side of the second track groove 150 away from the first track groove 140, so as to make the moving process of the movable member 400 relative to the fixed member 300 more stable through the first abutting portion 410a and the second abutting portion 410b.

[0412] Refer to Figure 33 , in some embodiments, at least one of the first track groove 140 and the second track groove 150 may extend to the abutting portion 410, that is, the abutting portion 410 may form at least one of the first track groove 140 and the second track groove 150. For example, both the first track groove 140 and the second track groove 150 extend to the abutting portion 410.

[0413] Along the extending direction of the first track groove, at least part of the abutting portion 410 is disposed on a side of the first track groove 140 away from the second track groove 150; and / or, along the extending direction of the second track groove 150, at least part of the abutting portion 410 is disposed on a side of the second track groove 150 away from the first track groove 140.

[0414] Exemplarily, the abutting portion 410 may be provided with a connected first abutting surface 411 and a second abutting surface 412. The first abutting surface 411 may be disposed parallel to the horizontal plane, the first abutting surface 411 may be parallel to the first contact portion 310 and the second contact portion 330, and the second abutting surface 412 may be disposed obliquely relative to the vertical direction. The second abutting surface 412 may be disposed parallel to the inclined portion 320, so that the moving process of the abutting portion 410 is more stable, and the position of the connection between the first abutting surface 411 and the second abutting surface 412 can be used to represent the bottom end position of the abutting portion 410.

[0415] Taking the bottom of the abutting portion 410 abutting against the first contact portion 310 as an example, the moving process of the abutting portion 410 will be described below.

[0416] Exemplarily, during the process of the door body 30 rotating and opening, the first abutting surface 411 of the abutting portion 410 abuts against the second contact portion 330, so that the abutting portion 410 can move from the second contact portion 330 to the second end of the inclined portion 320 in the horizontal direction, and then the second abutting surface 412 of the abutting portion 410 abuts against the inclined portion 320. The abutting portion 410 moves obliquely upward from the second end of the inclined portion 320 to the first end of the inclined portion 320, and then moves to the first contact portion 310 through the first end of the inclined portion 320, so that the first abutting surface 411 of the abutting portion 410 abuts against the first contact portion 310, and the first abutting surface 411 can move relative to the first contact portion 310 in the horizontal direction, thereby realizing the opening process of the door body 30.

[0417] During the process of the door body 30 rotating and closing, the first abutting surface 411 of the abutting portion 410 abuts against the first contact portion 310, and the abutting portion 410 can move from the first contact portion 310 to the first end of the inclined portion 320 in the horizontal direction. Then, the second abutting surface 412 of the abutting portion 410 abuts against the inclined portion 320, and the abutting portion 410 moves obliquely downward from the first end of the inclined portion 320 to the second end of the inclined portion 320, and then moves to the second contact portion 330 through the second end of the inclined portion 320, so that the first abutting surface 411 of the abutting portion 410 abuts against the second contact portion 330, and the first abutting surface 411 can move relative to the second contact portion 320 in the horizontal direction, thereby realizing the closing process of the door body 30.

[0418] The first part of the first track groove 140 is located on the first abutting surface 411, and the second part of the first track groove 140 is located on the second abutting surface 412; and / or, the first part of the second track groove 150 is located on the first abutting surface 411, and the second part of the second track groove 150 is located on the second abutting surface 412.

[0419] During the process of the door body 30 rotating and closing, the first abutting surface 411 of the abutting part 410 abuts against the first contact part 310, and the abutting part 410 can move from the first contact part 310 to the first end of the inclined part 320 in the horizontal direction. Then, the second abutting surface 412 of the abutting part 410 abuts against the inclined part 320, and the abutting part 410 moves obliquely downward from the first end of the inclined part 320 to the second end of the inclined part 320, and the first hinge shaft 140 and the second hinge shaft 150 can be located within the first abutting surface 411 or the second abutting surface 412, so as to make the moving process of the movable part 400 more stable.

[0420] Exemplarily, the abutting part 410 may further be provided with a third abutting surface 413, the third abutting surface 413 is connected to one end of the second abutting surface 412 departing from the first abutting surface 411, and the third abutting surface 413 may be arranged in parallel with the first contact part 310, that is, the third abutting surface 413 may be arranged in parallel with the first abutting surface 411.

[0421] Alternatively, the movable part 400 further has the above-mentioned third abutting surface 413, and the third abutting surface 413 is connected to the first end of the second abutting surface 412; when the door body 30 is in the closed state, the third abutting surface 413 faces the first contact part 310.

[0422] The first part of the first track groove 140 is located on the first abutting surface 411, the second part of the first track groove 140 is located on the second abutting surface 412, and the third part of the first track groove 140 is located on the third abutting surface 413; and / or, the first part of the second track groove 150 is located on the first abutting surface 411, the second part of the second track groove 150 is located on the second abutting surface 412, and the third part of the second track groove 150 is located on the third abutting surface 413.

[0423] During the process of the door body 30 rotating and closing, the first abutting surface 411 of the abutting part 410 abuts against the first contact part 310, and the abutting part 410 can move from the first contact part 310 to the first end of the inclined part 320 in the horizontal direction. Then, the second abutting surface 412 of the abutting part 410 abuts against the inclined part 320, and the abutting part 410 moves obliquely downward from the first end of the inclined part 320 to the second end of the inclined part 320, and the first hinge shaft 140 and the second hinge shaft 150 can be located within the first abutting surface 411 or the second abutting surface 412 or the third abutting surface 413, so as to make the moving process of the movable part 400 more stable.

[0424] During the process of the door body 30 rotating open or rotating closed, when the abutting portion 410 faces the second contact portion 330, the abutting portion 410 can also be spaced apart from the second contact portion 330. There is a gap between the first abutting surface 411 of the abutting portion 410 and the second contact portion 330, and the third abutting surface 413 can abut against the first contact portion 310.

[0425] Alternatively, during the process of the door body 30 rotating open or rotating closed, when the abutting portion 410 faces the second contact portion 330, the abutting portion 410 can also abut against the second contact portion 330, the first abutting surface 411 abuts against the second contact portion 330, and the third abutting surface 413 can abut against the first contact portion 310, so that the movable member 400 can abut against the second contact portion 330 through the first abutting surface 411 and abut against the first contact portion 310 through the third abutting surface 413, thereby increasing the contact area between the abutting portion 410 and the fixing member 300 and making the movement process of the movable member 400 more stable.

[0426] During the process of the door body 30 rotating closed, the lower end of the door body 30 is spaced apart from the top surface of the fixing member 300. The distance between the lower end of the door body 30 and the top surface of the fixing member 300 can be set to be greater than or equal to 0.5 mm and less than or equal to 2.5 mm. For example, the distance between the lower end of the door body 30 and the top surface of the fixing member 300 can be set within any one of the distance ranges of 0.5 mm - 1 mm, 1 mm - 1.5 mm, 1.5 mm - 2 mm, and 2 mm - 2.5 mm. Moreover, the smaller the distance between the lower end of the door body 30 and the top surface of the fixing member 300, the more compact the overall structure of the gravity self-closing structure.

[0427] Referring to Figure 31 and Figure 32 , the number of the pushing structures can be set to one, and the number of the abutting portions 410 can be set to multiple. The multiple abutting portions 410 move simultaneously on the pushing structure to make the relative movement process between the movable member 400 and the fixing member 300 more stable.

[0428] Referring to Figure 33 , it should be noted that in the movable member 400, the depth of the first track groove 140 and the depth of the second track groove 150 can be adjusted according to the position of the abutting portion 410. For example, in some other embodiments, the first track groove 140 can include a connected first part and a second part. When the abutting portion 410 abuts against the first contact portion 310 and the inclined portion 320, the first hinge shaft 160 is located in the first part of the first track groove 140;

[0429] When the abutting portion 410 abuts against the second contact portion 330, the first hinge shaft 160 is located in the second part of the first track groove 140, and the length of the first hinge shaft 160 located in the second part of the first track groove 140 is less than the length of the first hinge shaft 160 located in the first part of the first track groove 140.

[0430] Exemplarily, the depth of the second part of the first track groove 140 may be less than the depth of the first part of the first track groove 140, so that the first hinge shaft 160 can be closer to the bottom surface of the second part of the first track groove 140, making the movement process of the first hinge shaft 160 in the second part of the first track groove 140 more stable.

[0431] For example, the second track groove 150 may include a connected first part and a second part. When the abutting portion 410 abuts against the first contact portion 310 and the inclined portion 320, the second hinge shaft 170 is located in the first part of the second track groove 150. When the abutting portion 410 abuts against the second contact portion 330, the second hinge shaft 170 is located in the second part of the second track groove 150, and the length of the second hinge shaft 170 located in the second part of the second track groove 150 is less than the length of the second hinge shaft 170 located in the first part of the second track groove 150.

[0432] Exemplarily, the depth of the second part of the second track groove 150 may be less than the depth of the first part of the second track groove 150, so that the second hinge shaft 170 can be closer to the bottom surface of the second part of the second track groove 150, making the movement process of the second hinge shaft 170 in the second part of the second track groove 150 more stable.

[0433] For example, the first track groove 140 may include a connected first part, a second part, and a third part. When the abutting portion 410 abuts against the first contact portion 310, the first hinge shaft 160 is located in the first part of the first track groove 140; when the abutting portion 410 abuts against the inclined portion 320, the first hinge shaft 160 is located in the second part of the first track groove 140;

[0434] When the abutting portion 410 abuts against the second contact portion 330, the first hinge shaft 160 is located in the third part of the first track groove 140, and during the process of the door body 30 rotating and closing, the length of the first hinge shaft 160 located in the second part of the first track groove 140 gradually decreases; the length of the first hinge shaft 160 located in the third part of the first track groove 140 is less than the length of the first hinge shaft 160 located in the first part of the first track groove 140.

[0435] Exemplarily, the depth of the third part of the first track groove 140 may be less than the depth of the first part of the first track groove 140, and the depth of the second part of the first track groove 140 gradually decreases from the first part to the third part of the first track groove 140, so that the first hinge shaft 160 can be closer to the bottom surface of the groove of the second part of the first track groove 140, making the movement process of the first hinge shaft 160 in the second part of the first track groove 140 more stable.

[0436] For example, the second track groove 150 may include a connected first part, a second part, and a third part. When the abutting part 410 abuts against the first contact part 310, the second hinge shaft 170 is located in the first part of the second track groove 150; when the abutting part 410 abuts against the inclined part 320, the second hinge shaft 170 is located in the second part of the second track groove 150;

[0437] When the abutting part 410 abuts against the second contact part 330, the second hinge shaft 170 is located in the third part of the second track groove 150, and during the process of the door body 30 rotating and closing, the length of the second hinge shaft 170 located in the second part of the second track groove 150 gradually decreases; the length of the second hinge shaft 170 located in the third part of the second track groove 150 is less than the length of the second hinge shaft 170 located in the first part of the second track groove 150.

[0438] Exemplarily, the depth of the third part of the second track groove 150 may be less than the depth of the first part of the second track groove 150, and the depth of the second part of the second track groove 150 gradually decreases from the first part to the third part of the second track groove 150, so that the second hinge shaft 170 can be closer to the bottom surface of the groove of the second part of the second track groove 150, making the movement process of the second hinge shaft 170 in the second part of the second track groove 150 more stable.

[0439] Referring to Figure 35 and Figure 36 , in some embodiments, the abutting part 410 may be provided with a contact member, and the contact member may be provided as a ball or a roller, etc., to reduce the friction between the abutting part 410 and the first contact part 310, the inclined part 320, and the second contact part 330 through the contact member, making the process of the door body 30 moving in the vertical direction smoother.

[0440] For example, the number of contact members can be set to one. The contact member is set as a roller, and the roller can be arranged on the abutting portion 410. The rotation axis of the roller can be parallel to one of the first contact portion 310, the inclined portion 320, and the second contact portion 330. The abutting portion 410 can be provided with a receiving groove, and the receiving groove accommodates part of the roller. At least part of the roller protrudes out of the receiving groove so that at least part of the circumferential surface of the roller is exposed, and the part of the circumferential surface located outside the receiving groove is used to abut against the first contact portion 310, the inclined portion 320, and the second contact portion 330.

[0441] Alternatively, when the number of contact members is set to multiple, the first part of the multiple contact members can be arranged in the horizontal direction, and the first part of the contact members can be used to form the first abutting surface 411 of the abutting portion 410. The first part of the contact members is used to abut against the first contact portion 310 and the second contact portion 330 to reduce the friction between the first abutting surface 411 of the abutting portion 410 and the first contact portion 310 and the second contact portion 330 when moving in the horizontal direction.

[0442] The second part of the multiple contact members can be arranged in a direction parallel to the inclined portion 320, and the second part of the contact members can be used to form the second abutting surface 412 of the abutting portion 410. The second part of the contact members is used to abut against the inclined portion 320 to reduce the friction between the second abutting surface 412 of the abutting portion 410 and the inclined portion 320 when the door body 30 moves downward.

[0443] It is easy to understand that during the process of the door body 30 rotating and closing, the abutting portion 410 rolls and contacts the first contact portion 310 and the second contact portion 330 through the first part of the contact members, and rolls and contacts the inclined portion 320 through the second part of the contact members, so that the abutting portion 410 can roll and contact the first contact portion 310, the inclined portion 320, and the second contact portion 330.

[0444] Exemplarily, the number of contact members is set to multiple. The contact members can be set as ball bearings. Multiple ball bearings are all installed on the abutting portion 410, and at least part of each ball bearing protrudes out of the abutting portion 410. The part of the ball bearing protruding out of the abutting portion 410 is used to form at least one of the first abutting surface 411 and the second abutting surface 412. For example, the first part of the ball bearings is used to form the first abutting surface 411, and the second part of the ball bearings is used to form the second abutting surface 412.

[0445] The abutting portion 410 can be provided with a first installation groove, and the first installation groove can extend in a direction parallel to the first abutting surface 411. The first installation groove accommodates the first part of the ball bearings, and at least part of the ball bearings located in the first installation groove protrudes out of the first installation groove, and the part of the ball bearing protruding out of the first installation groove is used to form the first abutting surface 411.

[0446] The abutting portion 410 may be provided with a second mounting groove, the second mounting groove may extend in a direction parallel to the second abutting surface 412, the second mounting groove contains a second part of the balls, and at least part of the balls located in the second mounting groove protrude out of the second mounting groove, and the part of the balls protruding out of the second mounting groove is used to form the second abutting surface 412.

[0447] Exemplarily, the number of the contact members is set to be multiple, the contact members may be set to be rollers, the rotation axes of the first part of the rollers extend perpendicular to the extending direction of the inclined surface of the first inclined portion 320, and the peripheral surface of the first part of the rollers is used to form the first abutting surface 411; the rotation axes of the second part of the rollers extend perpendicular to the extending direction of the inclined surface of the second inclined portion 320, the rotation axes of the second part of the rollers may be arranged in parallel with the rotation axes of the first part of the rollers, and the peripheral surface of the second part of the rollers is used to form the second abutting surface 412.

[0448] Referring to Figure 34 , in some embodiments, the abutting portion 410 may be set as a columnar abutting portion 410, the first end of the columnar abutting portion 410 is connected to the surface of the movable member 400 facing the fixed member 300, the columnar abutting portion 410 extends in the vertical direction, the second end of the columnar abutting portion 410 forms the bottom of the abutting portion 410, and the second end of the columnar abutting portion 410 is used to abut against the first contact portion 310, the inclined portion 320 and the second contact portion 330, so that the movable member 400 drives the door body 30 to move in the vertical direction through the columnar abutting portion 410.

[0449] Exemplarily, the door body 30 can be reused to form the movable member 400, that is, the columnar abutting portion 410 can be arranged at the lower end of the door body 30, and both the first track groove 140 and the second track groove 150 are arranged at the lower end of the door body 30, so that the structure of the gravity self-closing structure is simpler.

[0450] The columnar abutting portion 410 can be integrally arranged on the door body 30, or the columnar abutting portion 410 can also be detachably arranged at the lower end of the door body 30. For example, the first end of the columnar abutting portion 410 can be provided with a thread, so that the columnar abutting portion 410 can be threadedly connected to the lower end of the door body 30, and the second end of the columnar abutting portion 410 extends downward, so that the disassembly and assembly process of the columnar abutting portion 410 is more convenient.

[0451] The columnar abutting portion 410 can also be relatively fixed to the lower end of the door body 30 by means of snap connection, etc. When assembling the columnar abutting portion 410 to form the gravity self-closing structure, the first end of the columnar abutting portion 410 can be inserted into the lower end of the door body 30, so that the columnar abutting portion 410 is connected to the door body 30, thereby making the assembly process of the gravity self-closing structure more convenient.

[0452] During the process of the door body 30 rotating and closing, the second end of the columnar abutting portion 410 abuts against the first contact portion 310. The second end of the columnar abutting portion 410 can move horizontally from the first contact portion 310 to the first end of the inclined portion 320, and then the second end of the columnar abutting portion 410 abuts against the inclined portion 320. The second end of the columnar abutting portion 410 moves obliquely downward from the first end of the inclined portion 320 to the second end of the inclined portion 320, and then moves to the second contact portion 330 through the second end of the inclined portion 320, so that the second end of the columnar abutting portion 410 abuts against the second contact portion 330. The second end of the columnar abutting portion 410 can move horizontally relative to the second contact surface, thereby realizing the closing process of the door body 30.

[0453] Exemplarily, the box body 110 can be reused to form the fixing member 300. For example, the hinge assembly 130 located at the lower end of the door body 30 can be reused to form the fixing member 300. The hinge assembly 130 can be provided with a hinge plate 131. The surface of the hinge plate 131 facing the movable member 400 is provided with a first hinge shaft 160, a second hinge shaft 170, a first contact portion 310, an inclined portion 320, and a second contact portion 330, so as to realize the formation process of the fixing member 300 through the hinge plate 131, thereby making the structure of the gravity self-closing structure simpler.

[0454] Among them, both the first hinge shaft 160 and the second hinge shaft 170 can be relatively fixed to the hinge plate 131 by means of threads or the like. The first hinge shaft 160 is provided with a first thread section, and the first hinge shaft 160 is threadedly connected to the hinge plate 131 through the first thread section. The second hinge shaft 170 is provided with a second thread section, and the second hinge shaft 170 is threadedly connected to the hinge plate 131 through the second thread section, so as to make the process of connecting the first hinge shaft 160 and the second hinge shaft 170 to the hinge plate 131 more convenient.

[0455] It is easy to understand that the lower end of the door body 30 is reused to form the movable member 400, and the hinge assembly 130 of the box body 110 is reused to form the fixing member 300, so as to make the assembly process of the gravity self-closing structure more convenient.

[0456] In some embodiments, the second end of the columnar abutting portion 410 can be set as an arc-shaped abutting end. The arc-shaped abutting end can be provided with a cylindrical circumferential surface or a hemispherical surface. When the arc-shaped abutting end is provided with a cylindrical circumferential surface, the extending direction of the cylindrical circumferential surface can be perpendicular to the extending direction of the inclined surface of the first inclined portion 320110, so that the circular abutting end always abuts against the first contact portion 310, the inclined portion 320, and the second contact portion 330 through the arc surface.

[0457] Alternatively, when the circular abutting end is provided with a hemispherical surface, the hemispherical surface protrudes towards the movable member 400, and the center of the sphere of the hemispherical surface is located on the extending direction of the cylindrical abutting portion 410, so that the circular abutting end always abuts against the first contact portion 310, the inclined portion 320, and the second contact portion 330 through the arc surface.

[0458] The cylindrical abutting portion 410 can abut against the first contact portion 310, the inclined portion 320, and the second contact portion 330 through the circumferential surface of the cylinder, so as to increase the contact area between the cylindrical abutting portion 410 and the first contact portion 310, the inclined portion 320, and the second contact portion 330, and make the process of the cylindrical abutting portion 410 driving the door body 30 to move in the vertical direction more stable.

[0459] In some embodiments, a rolling member may be provided at the second end of the cylindrical abutting portion 410. The rolling member may be provided as a ball or a roller, etc., so as to reduce the frictional force between the cylindrical abutting portion 410 and the first contact portion 310, the inclined portion 320, and the second contact portion 330 through the rolling member, and make the process of the door body 30 moving in the vertical direction more smooth.

[0460] Exemplarily, the rolling member may be provided as a ball; the cylindrical abutting portion 410 is provided with a third installation groove, the third installation groove is located on the end surface of the second end of the cylindrical abutting portion 410, a part of the ball protrudes out of the third installation groove, and the part of the ball protruding out of the third installation groove forms the bottom of the cylindrical abutting portion 410, and the part of the ball protruding out of the third installation groove is used to abut against the first contact portion 310, the inclined portion 320, and the second contact portion 330, so as to reduce the frictional force between the cylindrical abutting portion 410 and the fixing member 300.

[0461] Alternatively, the rolling member may be provided as a roller, the rotation axis of the roller may be parallel to the inclined portion 320, and the bottom end of the circumferential surface of the roller forms the bottom end of the cylindrical abutting portion 410, and the circumferential surface of the roller is used to abut against the first contact portion 310, the inclined portion 320, and the second contact portion 330, so as to reduce the frictional force between the cylindrical abutting portion 410 and the fixing member 300.

[0462] It is easy to understand that during the process of the cylindrical abutting portion 410 moving from the inclined portion 320 to the second contact portion 330 through the rolling member, the cylindrical abutting portion 410 can move quickly on the inclined portion 320 under the action of the rolling member, thereby reducing the possibility of the cylindrical abutting portion 410 staying on the surface of the inclined portion 320.

[0463] In some embodiments, the abutting portion 410 may be configured as a roller-type abutting portion 410. The roller-type abutting portion 410 is rotatably disposed on the surface of the movable member 400 facing the fixed member 300, and the circumferential surface of the roller-type abutting portion 410 is for abutting against the first contact portion 310, the inclined portion 320, and the second contact portion 330. The bottom end of the circumferential surface of the roller-type abutting portion 410 forms the bottom of the abutting portion 410. The rotation axis of the roller-type abutting portion 410 may be parallel to one of the first contact portion 310, the inclined portion 320, and the second contact portion 330.

[0464] Exemplarily, the surface of the movable member 400 facing the fixed member 300 may be provided with a mounting bracket. The mounting bracket is provided with a mounting hole for passing through the rotation axis of the roller-type abutting portion 410, so that the roller-type abutting portion 410 can rotate relative to the movable member 400 through the rotation axis and the mounting bracket.

[0465] During the process of the door body 30 rotating and closing, the bottom end of the roller-type abutting portion 410 can abut against the first contact portion 310. The bottom end of the roller-type abutting portion 410 can move horizontally from the first contact portion 310 to the first end of the inclined portion 320, and then the bottom end of the roller-type abutting portion 410 abuts against the inclined portion 320. The bottom end of the roller-type abutting portion 410 moves obliquely downward from the first end of the inclined portion 320 to the second end of the inclined portion 320, and then moves to the second contact portion 330 through the second end of the inclined portion 320, so that the bottom end of the roller-type abutting portion 410 abuts against the second contact portion 330. The bottom end of the roller-type abutting portion 410 can move horizontally relative to the second contact surface, thereby realizing the closing process of the door body 30.

[0466] Moreover, during the process of the roller-type abutting portion 410 moving from the inclined portion 320 to the second contact portion 330 through the rolling member, the roller-type abutting portion 410 can move quickly on the inclined portion 320 under the action of the rolling member, thereby reducing the possibility of the roller-type abutting portion 410 staying on the surface of the inclined portion 320.

[0467] A first arc portion may be provided between the first contact portion 310 and the first end of the inclined portion 320 to make the process of the roller-type abutting portion 410 moving from the first contact portion 310 to the first end of the inclined portion 320 more convenient, and the curvature of the first arc portion may be less than or equal to the curvature of the roller-type abutting portion 410, so that the roller-type abutting portion 410 can move from the first contact portion 310 to the first end of the inclined portion 320 through the first arc portion, thereby making the process of the door body 30 moving downward in the vertical direction more smooth.

[0468] An included angle portion may be provided between the second end of the inclined portion 320 and the second contact portion 330, or a second arc portion may be provided between the second end of the inclined portion 320 and the second contact portion 330, and the curvature of the second arc portion may be greater than the curvature of the roller-type abutting portion 410. When the roller-type abutting portion 410 can move from the second contact portion 330 to the second end of the inclined portion 320, it is difficult for the roller-type abutting portion 410 to move to the inclined portion 320 through the included angle portion or the second arc portion, thereby increasing the difficulty for the roller-type abutting portion 410 to move to the inclined portion 320, and further reducing the possibility of a gap being generated between the door body 30 and the box body 110.

[0469] In some embodiments, at least one of the first contact portion 310, the inclined portion 320, and the second contact portion 330 may be provided with a moving member. The moving member may be provided as a ball or a roller, etc., so as to reduce the frictional force between the abutting portion 410 and the first contact portion 310, and between the abutting portion 410 and the second contact portion 330 through the moving member, making the process of the door body 30 moving in the horizontal direction smoother, and being able to reduce the frictional force between the abutting portion 410 and the inclined portion 320, making the process of the door body 30 moving in the vertical direction smoother.

[0470] Exemplarily, the number of the moving members may be set to one or more. When the number of the moving members is set to one, the contact members may be provided on the first contact portion 310, the inclined portion 320, and the second contact portion 330; or, the number of the moving members may also be set to multiple, and the multiple moving members may be used to form at least one of the first contact portion 310, the inclined portion 320, and the second contact portion 330.

[0471] On the first contact portion 310 and / or the second contact portion 330, when the number of the moving members is set to multiple, the multiple moving members may be arranged parallel to the horizontal direction, and the multiple moving members may be reused to form the surface of the first contact portion 310 and / or the second contact portion 330 facing the movable member 400, so as to reduce the frictional force between the abutting portion 410 and the first contact portion 310, and between the abutting portion 410 and the second contact portion 330, making the process of the door body 30 moving in the horizontal direction smoother.

[0472] On the inclined portion 320, when the number of the moving members is set to multiple, the multiple moving members may be arranged parallel to the direction of the inclined portion 320, and the multiple moving members may be reused to form the inclined surface of the inclined portion 320, so as to reduce the frictional force between the abutting portion 410 and the inclined portion 320 when the door body 30 moves upward or downward, making the process of the door body 30 moving in the vertical direction smoother.

[0473] When the number of the moving members is set to multiple, the multiple moving members may form at least one row of moving members. Each row of moving members includes several moving members, and the number of rows of moving members may be set to several.

[0474] In some embodiments, the first contact portion 310, the inclined portion 320, and the second contact portion 330 may be integrally provided. For example, the first contact portion 310, the inclined portion 320, and the second contact portion 330 may jointly form a pushing structure, which is used in cooperation with the abutting portion 410. The number of pushing structures may be set to one or more. When the number of pushing structures is set to multiple, the number of abutting portions 410 is correspondingly set to multiple, and each pushing structure can be used in cooperation with one abutting portion 410.

[0475] Refer to Figure 38 and Figure 39 , by way of example, the box body 110 can be reused to form the fixing member 300. For example, the hinge assembly 130 located at the lower end of the door body 30 can be reused to form the fixing member 300. The hinge assembly 130 may be provided with a hinge plate 131. The surface of the hinge plate 131 facing the movable member 400 is provided with a first hinge shaft 160, a second hinge shaft 170, a first contact portion 310, an inclined portion 320, and a second contact portion 330, so as to realize the formation process of the fixing member 300 through the hinge plate 131, thereby making the structure of the gravity self-closing structure simpler.

[0476] Wherein, both the first hinge shaft 160 and the second hinge shaft 170 can be relatively fixed to the hinge plate 131 by means of threads or the like. The first hinge shaft 160 is provided with a first thread section, and the first hinge shaft 160 is threadedly connected to the hinge plate 131 through the first thread section. The second hinge shaft 170 is provided with a second thread section, and the second hinge shaft 170 is threadedly connected to the hinge plate 131 through the second thread section, so as to make the process of connecting the first hinge shaft 160 and the second hinge shaft 170 to the hinge plate 131 more convenient.

[0477] It is easy to understand that the lower end of the door body 30 is reused to form the movable member 400, and the hinge assembly 130 of the box body 110 is reused to form the fixing member 300, so as to make the assembly process of the gravity self-closing structure more convenient.

[0478] In some embodiments, along the extending direction of the first hinge shaft 160 and the second hinge shaft 170, the orthographic projection area of the first contact portion 310 and the second contact portion 320 on the surface of the fixing member 300 facing the movable member 400 can be adjusted according to the magnitudes of the second set angle, the third set angle, and the first set angle.

[0479] The surface of the hinge plate 131 facing away from the first hinge shaft 160 and the second hinge shaft 170 is provided with a foot pad 360. The hinge plate 131 is supported by the foot pad 360, so that the weight of the door body 30 can be transmitted to the ground through the foot pad 360, thereby reducing the force on the hinge plate 131 and reducing the possibility of the hinge plate 131 being bent or broken.

[0480] The hinge plate 131 is also provided with rotatable rollers. The rollers have a rotating surface, and the bottom surface of the rotating surface is flush with the bottom end of the foot pad 360, so as to drive the box body 110 to move through the rotating surface, thereby making the moving process of the box body 110 more convenient.

[0481] In some embodiments, the fixing member 300 can be relatively fixedly arranged on the box body 110. For example, the fixing member 300 can be directly connected to the box body 110, or the fixing member 300 can also be connected to the box body 110 through a hinge assembly located at the lower end of the door body 30. The materials of the fixing member 300 and the movable member 400 can be set as POM materials.

[0482] Exemplarily, the fixing member 300 can be set in the form of a plate-shaped fixing member 300 or a column-shaped fixing member 300, etc. The first surface of the fixing member 300 can face the box body 110, or the fixing member 300 can also face the hinge plate 131 of the hinge assembly 130. The second surface of the fixing member 300 faces the lower end of the door body 30, and the second surface of the fixing member 300 connects the first hinge shaft 160 and the second hinge shaft 170.

[0483] The fixing member 300 can be provided with at least one connecting member, so that the fixing member 300 is relatively fixed to the box body 110 through the connecting member. For example, the fixing member 300 can be fixed to the hinge plate 131 of the hinge assembly 130 through the connecting member.

[0484] The connecting member can be set as a connecting column. The connecting column can be relatively fixedly arranged on the hinge plate 131. The first end of the connecting column is connected to the hinge plate 131, and the second end of the connecting column extends towards the movable member 400. The fixing member 300 is provided with a movable opening, and the connecting column passes through the movable opening, so that the fixing member 300 can be relatively movably arranged on the hinge plate 131 along the extending direction of the connecting column, thereby enabling the fixing member 300 and the hinge plate 131 to be fixed through the connecting column.

[0485] The connecting member can also be set as structures such as fixing bolts, fixing pins, etc., or the connecting member can also be set as structures such as snap joints, etc., so that the fixing member 300 can be detachably connected to the hinge plate 131 by means of snap connection.

[0486] The number of the connecting members can be set as one or more. When the number of the connecting members is set as multiple, the multiple connecting members can be evenly distributed on the fixing member 300, and the extending directions of the multiple connecting members are arranged parallel to each other, so that the moving process of the fixing member 300 along the extending direction of the connecting members is more stable.

[0487] Exemplarily, the first hinge shaft 160 and the second hinge shaft 170 can also be arranged on the hinge plate 131. The extending directions of the first hinge shaft 160 and the second hinge shaft 170 are both arranged parallel to the extending direction of the connecting piece, and the fixing member 300 can be provided with two through holes respectively for passing through the first hinge shaft 160 and the second hinge shaft 170, so that the ends of the first hinge shaft 160 and the second hinge shaft 170 departing from the hinge plate 131 can pass through the fixing member 300 and extend towards the movable member 400, and the fixing member 300 can move along the extending direction of the connecting piece through the two through holes.

[0488] When the fixing member 300 is relatively fixed to the box body 110, the fixing member 300 can be moved in the direction close to the hinge plate 131, so that the connecting column passes through the movable opening, and the first hinge shaft 160 and the second hinge shaft 170 relatively fixed to the hinge plate 131 can pass through the through holes. The first surface of the fixing member 300 faces the hinge plate 131, thereby relatively fixing the fixing member 300 to the box body 110.

[0489] Exemplarily, the fixing member 300 can also be provided with an adjusting member 350. The first end of the adjusting member 350 can be connected to the fixing member 300, the second end of the adjusting member 350 is connected to the hinge plate 131, and the second end of the adjusting member 350 can be telescopically arranged along the extending direction of the connecting column to adjust the distance between the fixing member 300 and the hinge plate 131 through the adjusting member 350.

[0490] It is easy to understand that the movable member 400 is relatively fixed to the door body 30. When the distance between the fixing member 300 and the hinge plate 131 is adjusted through the adjusting member 350, since the distance between the movable member 400 and the fixing member 300 remains relatively fixed, the distance between the movable member 400 and the door body 30 and the hinge plate 131 can be changed. When the height of the door body 30 needs to be adjusted, the height of the door body 30 can be adjusted by adjusting the distance between the fixing member 300 and the hinge plate 131 through the adjusting member 350.

[0491] Refer to Figures 35 - 37 , the fixing member 300 can be provided with an adjusting plate 370. The first surface of the adjusting plate 370 is connected to the adjusting member 350, and the second surface of the adjusting plate 370 is connected to the fixing member 300, so that the fixing member 300 is connected to the adjusting member 350 through the connecting plate. The material of the adjusting plate 370 can be set as a metal material.

[0492] When the height of the fixing member 300 needs to be adjusted, the height of the adjusting plate 370 can be changed through the adjusting member 350, so as to drive the fixing member 300 to move up and down in the vertical direction through the adjusting plate 370, thereby reducing the possibility of the adjusting member 350 directly contacting the fixing member 300 and reducing the possibility of the fixing member 300 being damaged by collision.

[0493] Referring to Figure 40 and Figure 41 Figure 41 , the adjusting plate 370 may further be provided with at least one convex portion 371. The number of the convex portions 371 may be set to one or more. The convex portion 371 protrudes towards the fixing member 300, and the surface of the convex portion 371 facing away from the fixing member 300 is concave, so as to increase the support strength of the adjusting plate 370, increase the stability of the adjusting plate 370, and reduce the possibility of deformation of the adjusting plate 370 and the like.

[0494]

[0494] The adjusting member 350 may be set as an adjusting bolt. The first end of the adjusting bolt may be rotatably connected to the fixing member 300. The adjusting bolt may be threadedly connected to the hinge plate 131, and the second end of the adjusting bolt may protrude relative to the surface of the hinge plate 131 facing away from the fixing member 300. When it is necessary to adjust the distance between the fixing member 300 and the hinge plate 131, the adjusting bolt may be rotated so that the threaded section of the adjusting bolt is screwed into or out of the hinge plate 131, thereby changing the length of the adjusting bolt located between the fixing member 300 and the hinge plate 131, so as to realize the adjustment process of the distance between the fixing member 300 and the hinge plate 131, and be able to adjust the height of the refrigerator door body 30, and reduce the possibility of the situation that the refrigerator door body 30 is uneven up and down.

[0495]

[0495] Moreover, the convex portion 371 may be reused to connect the adjusting bolt. The convex portion 371 may correspond to the center of gravity of the fixing plate 300. The surface of the convex portion 371 facing away from the fixing member 300 is reused to connect the adjusting bolt, so as to play a certain positioning role on the adjusting bolt through the convex portion 371, and make the process of driving the fixing member 300 to move up and down in the vertical direction by the adjusting bolt through the adjusting plate 370 more stable.

[0496]

[0496] Alternatively, the adjusting member 350 may also be set as an adjusting nut. The adjusting nut may be threadedly connected to the connecting column, and the surface of the adjusting nut facing away from the hinge plate 131 abuts against the fixing member 300. When it is necessary to adjust the distance between the fixing member 300 and the hinge plate 131, the adjusting nut may be rotated so that the adjusting nut moves along the extending direction of the connecting column, thereby changing the length of the connecting column located between the fixing member 300 and the hinge plate 131, so as to realize the adjustment process of the distance between the fixing member 300 and the hinge plate 131.

[0497] Exemplarily, the connecting member can also be reused to form an adjusting nut. For example, the connecting member can be rotatably arranged around the extending direction of the connecting member on the hinge plate 131, and the first end of the connecting member protrudes relative to the surface of the hinge plate 131 facing away from the fixing member 300. The connecting member is threadedly connected to the fixing member 300; when it is necessary to adjust the distance between the fixing member 300 and the hinge plate 131, the connecting member can be rotated so that the threaded section of the connecting member is screwed into or out of the fixing member 300, thereby changing the length of the connecting member between the fixing member 300 and the hinge plate 131 to realize the adjustment process of the distance between the fixing member 300 and the hinge plate 131.

[0498] Alternatively, the connecting member can be rotatably arranged around the extending direction of the connecting member on the fixing member 300, and the first end of the connecting member protrudes relative to the surface of the fixing member 300 facing away from the hinge plate 131. The connecting member is threadedly connected to the hinge plate 131; when it is necessary to adjust the distance between the fixing member 300 and the hinge plate 131, the connecting member can be rotated so that the threaded section of the connecting member is screwed into or out of the hinge plate 131, thereby changing the length of the connecting member between the fixing member 300 and the hinge plate 131 to realize the adjustment process of the distance between the fixing member 300 and the hinge plate 131.

[0499] The first hinge shaft 160 and the second hinge shaft 170 can be arranged on the hinge plate 131, and the first hinge shaft 160 and the second hinge shaft 170 pass through the adjusting plate 370 and the fixing member 300, so that at least part of the first hinge shaft 160 and the second hinge shaft 170 extends towards the movable member 400, and the lengths of the first hinge shaft 160 and the second hinge shaft 170 can be greater than or equal to 8 mm and less than or equal to 18 mm. For example, the lengths of the first hinge shaft 160 and the second hinge shaft 170 can be set to any length within the ranges of 8 mm - 10 mm, 10 mm - 12 mm, 12 mm - 14 mm, 14 mm - 16 mm, and 16 mm - 18 mm.

[0500] And the adjustment range of the adjusting member 350 for adjusting the height of the fixing member 300 can be set to be greater than or equal to 0.5 mm and less than or equal to 3.5 mm. For example, the adjustment range of the adjusting member 350 for adjusting the height of the fixing member 300 can be set to any adjustment range within 0.5 mm - 1 mm, 1 mm - 1.5 mm, 1.5 mm - 2 mm, 2 mm - 2.5 mm, 2.5 mm - 3 mm, and 3 mm - 3.5 mm.

[0501] It is easily understandable that the lengths of the first hinge shaft 160 and the second hinge shaft 170 will affect the adjustment range of the adjusting member 350 for adjusting the height of the fixing member 300. For example, when the lengths of the first hinge shaft 160 and the second hinge shaft 170 are greater, and the lengths of the first hinge shaft 160 and the second hinge shaft 170 extending out of the fixing member 300 remain unchanged, the adjustment range of the adjusting member 350 for adjusting the height of the fixing member 300 is greater.

[0502] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0503] For the sake of convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, include: A box body, wherein the box body is formed with a receiving cavity; A door body, the door body can be rotatably arranged on the box body to close or open the accommodating cavity; A gravity self-closing structure is arranged at the lower end of the door body, and the gravity self-closing structure includes a matching fixed part and a movable part, the fixed part is arranged on the box body, and the movable part is arranged on the door body; The movable member is provided with an abutment portion, the abutment portion faces the fixed member, and the abutment portion is formed with a first track groove and a second track groove; The fixing member comprises a first contact portion and an inclined portion connected to each other, wherein the first end of the inclined portion is connected to the first contact portion, and the second end of the inclined portion is inclined downward; the fixing member is provided with a first hinge shaft and a second hinge shaft, wherein the first hinge shaft can be relatively movably arranged in the first track groove, and the second hinge shaft can be relatively movably arranged in the first track groove; During the process of rotating and closing the door body, the abutment portion abuts against the first contact portion and the inclined portion in sequence, the first hinge axis moves relative to the first track groove along the extension direction of the first track groove, and the second hinge axis moves relative to the second track groove along the extension direction of the second track groove.

2. The refrigerator according to claim 1, characterized in that, At least one of the first hinge axis and the second hinge axis is disposed between the first contact portion and the inclined portion.

3. The refrigerator according to claim 1, characterized in that, Along the extension direction of the first track groove, at least part of the abutment portion is arranged on a side of the first track groove away from the second track groove; And / or, along the extension direction of the second track groove, at least part of the abutting portion is arranged on a side of the second track groove facing away from the first track groove.

4. The refrigerator according to any one of claims 1 to 3, characterized in that, The fixed member further has a second contact portion, the second contact portion is connected to the second end of the inclined portion, and the first contact portion is closer to the movable member than the second contact portion; During the process of the door body rotating and closing, the abutting portion abuts against the first contact portion and the inclined portion in sequence; when the door body is in a closed state, part of the abutting portion abuts against or is spaced apart from the second contact portion.

5. The refrigerator according to claim 4, characterized in that, An upper surface of the first contact portion and an upper surface of the second contact portion are both parallel to a horizontal plane.

6. The refrigerator according to claim 5, characterized in that, A height difference between an upper surface of the first contact portion and an upper surface of the second contact portion in a vertical direction is greater than or equal to 1 mm and less than or equal to 5 mm.

7. The refrigerator according to claim 4, characterized in that, The fixing member has a third surface and a fourth surface, the third surface faces the movable member, and the fourth surface faces away from the movable member; the first contact portion, the inclined portion, and the surface of the second contact portion facing the movable member together form the third surface.

8. The refrigerator according to claim 4, characterized in that, A first abutting surface and a second abutting surface connected to each other are provided on one side of the abutting portion facing the fixing member; the first abutting surface is parallel to the upper surface of the first contact portion; the second abutting surface is parallel to the upper surface of the inclined portion; During the process of rotating and closing the door body, the first abutting surface abuts against the upper surface of the first contact portion and moves from the first contact portion to the first end of the inclined portion; then the second abutting surface abuts against the upper surface of the inclined portion and moves from the first end of the inclined portion toward the second end of the inclined portion to close the door body.

9. The refrigerator according to claim 8, characterized in that, When the door body is in a closed state, the first abutting surface abuts against or is spaced apart from the second contact portion.

10. The refrigerator according to claim 8, characterized in that, A third abutting surface is also provided on the side of the abutting portion facing the fixing member, and the third abutting surface is connected to the end of the second abutting surface facing away from the first abutting surface, and the third abutting surface is parallel to the upper surface of the first contact portion; when the door body is in a closed state, the third abutting surface abuts against or is spaced apart from the first contact portion.

11. The refrigerator according to claim 10, characterized in that, The first portion of the first track groove is located on the first abutting surface, the second portion of the first track groove is located on the second abutting surface, and the third portion of the first track groove is located on the third abutting surface; And / or, the first portion of the second trajectory groove is located on the first abutting surface, the second portion of the second trajectory groove is located on the second abutting surface, and the third portion of the second trajectory groove is located on the third abutting surface.

12. The refrigerator according to claim 11, wherein, The depth of the third portion of the first track groove is less than the depth of the first portion of the first track groove, and the depth of the second portion of the first track groove gradually decreases from the first portion of the first track groove to the third portion of the first track groove.

13. The refrigerator according to claim 11, characterized in that, The depth of the third portion of the second track groove is less than the depth of the first portion of the second track groove, and the depth of the second portion of the second track groove decreases from the first portion of the second track groove to the third portion of the second track groove.

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