Refrigerator

Abstract

The embodiment of the invention 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, wherein the door body is rotatably arranged on the refrigerator body; the gravity self-closing structure comprises a fixed part and a movable part, the movable part is provided with a first track groove and a second track groove, the first track groove is provided with a first inflection point, and the second track groove is provided with a second inflection point; the fixed part is provided with a first inclined part and a second inclined part, the second end of the first inclined part is inclined upwards, the second end of the second inclined part is inclined downwards, the movable part is provided with an abutting part, and the abutting part is used for abutting against the first inclined part and the second inclined part; when the door body is rotationally closed and the abutting part is located at the first end of the first inclined part, the first hinge shaft passes through the first inflection point, and the second hinge shaft is located at the second inflection point. 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 claims the priority of a Chinese patent application with the application number 202311542938.1 and the application title "Refrigerator" filed with the Chinese Patent Office on November 18, 2023, the content of which is incorporated herein by reference. Technical Field

[0002] Embodiments of this 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, and 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. Summary of the Invention

[0004] Embodiments of this application provide a refrigerator, which can solve the technical problems 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] In a first aspect, embodiments of this 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 fixedly arranged on the box body, and the movable part is fixedly arranged on the door body;

[0009] The movable part is provided with a first track groove and a second track groove, both the first track groove and the second track groove face the fixed part, the first track groove has a first inflection point, and the second track groove has a second inflection point;

[0010] The fixed part is provided with a first hinge shaft and a second hinge shaft; 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 second track groove;

[0011] A first inclined portion and a second inclined portion are further provided on the surface of the fixing member facing the movable member. A first end of the first inclined portion is connected to a first part of the fixing member, and a second end of the first inclined portion is inclined upward; a first end of the second inclined portion is connected to the second end of the first inclined portion, a second end of the second inclined portion is inclined downward, and the second end of the second inclined portion is connected to a second part of the fixing member;

[0012] The movable member is provided with an abutting portion for abutting against the first inclined portion and the second inclined portion; when the abutting portion is located at the first end of the first inclined portion, in the first track groove, the first hinge shaft is located at the first inflection point; in the second track groove, the second hinge shaft is located at the second inflection point.

[0013] In the refrigerator according to the embodiment of the present application, during the process of the door body rotating and closing, the abutting portion can move from the surface of the fixing member to the first end of the first inclined portion, and move along the first end of the first inclined portion to the second end of the first inclined portion, and the movable member drives the door body to move upward through the abutting portion; and the abutting portion moves from the second end of the first inclined portion to the first end of the second inclined portion, and moves along the first end of the second inclined portion to the second end of the second inclined portion, and the movable member drives the door body to move downward through the abutting portion, so that the abutting portion can move from the second end of the second inclined portion to the surface of the fixing member facing the movable member, so that the abutting portion can move from the side of the first inclined portion away from the second inclined portion to the side of the second inclined portion away from the first inclined portion;

[0014] 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 second inclined portion to the first end of the second inclined portion, thereby playing a certain limiting role on the abutting portion through the second inclined portion and reducing the possibility of the abutting portion moving; during the process of the door body rotating and closing, when the abutting portion abuts against the second inclined portion, the abutting portion can move toward the second end of the second inclined portion under the action of the gravity of the door body, so that the process of the door body moving to the side of the second inclined portion away from the first inclined portion is more convenient;

[0015] Moreover, when the abutting portion is located at the first end of the first inclined portion, in the first track groove, the first hinge shaft is located at the first inflection point; in the second track groove, the second hinge shaft is located at the second inflection point. At this time, the movement directions of the first hinge shaft and the second hinge shaft change greatly in the horizontal direction. When the abutting portion moves from the first end of the first inclined portion toward the second end of the first inclined portion, the first hinge shaft is located between the first inflection point and the second end of the first track groove, and the second hinge shaft is located between the second inflection point and the second end of the second track groove. The movement process of the first hinge shaft and the second hinge shaft is more stable, thereby improving the stability of the door body during the rotation and closing process.

[0016] Second aspect, an embodiment of the present application provides a refrigerator, including a box body, a door body and a gravity self-closing structure. The door body is used to close or open the accommodation cavity of the box body; the opening angles of the door body relative to the box body have a first set angle, a second set angle and a third set angle that decrease in sequence.

[0017] The gravity self-closing structure is arranged at the lower end of the door body. The gravity self-closing structure includes a 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 part is provided with a first track groove and a second track groove facing the fixed part. The first track groove has a first inflection point, and the second track groove has a second inflection point; 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 second track groove.

[0018] The surface of the fixed part facing the movable part is also provided with a first inclined part and a second inclined part. The first end of the first inclined part is connected to the first part of the fixed part, and the second end of the first inclined part inclines upward; the first end of the second inclined part is connected to the second end of the first inclined part, and the second end of the second inclined part inclines downward. The second end of the second inclined part is connected to the second part of the fixed part.

[0019] The movable part is provided with an abutting part, and the abutting part is used to abut against the first inclined part and the second inclined part.

[0020] During the process of the door body rotating and closing to the first set angle, the abutting part is movably arranged on the first part of the fixed part, the first hinge shaft moves towards the first inflection point, and the second hinge shaft moves towards the second inflection point.

[0021] When the door body is at the first set angle, the first hinge shaft is at the first inflection point, the second hinge shaft is at the second inflection point, and the abutting part is at the first end of the first inclined part.

[0022] During the process of the door body rotating and closing from the first set angle to the second set angle, the abutting part moves obliquely upward from the first end of the first inclined part to the second end of the first inclined part; during the process of the door body rotating and closing from the second set angle to the third set angle, the abutting part moves obliquely downward from the first end of the second inclined part to the second end of the second inclined part. Description of the Drawings

[0023] 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 for use 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 based on these drawings.

[0024] Figure 1 Is a perspective view of a refrigerator according to some embodiments;

[0025] Figure 2 Is a top view according to some embodiments;

[0026] Figure 3 Is a schematic structural diagram of a hinge assembly of a refrigerator according to some embodiments;

[0027] Figure 4 Is an exploded view of the hinge assembly at the upper right corner of a refrigerator according to some embodiments;

[0028] Figure 5 Is a structural diagram of the hinge assembly when the door body of the refrigerator is in the closed state in Embodiment 1 according to some embodiments;

[0029] Figure 6 Is for the refrigerator according to some embodiments when the door body in Embodiment 1 is opened to The structural diagram of the hinge assembly at this time;

[0030] Figure 7 Is for the refrigerator according to some embodiments when the door body in Embodiment 1 is opened to The structural diagram of the hinge assembly at this time;

[0031] Figure 8 Is for the refrigerator according to some embodiments when the door body in Embodiment 1 is opened to The structural diagram of the hinge assembly at this time;

[0032] Figure 9 Is for the refrigerator according to some embodiments when the door body in Embodiment 1 is opened to The structural diagram of the hinge assembly at this time;

[0033] Figure 10 Is for the refrigerator according to some embodiments when the door body in Embodiment 1 is opened to The structural diagram of the hinge assembly at this time;

[0034] Figure 11 Is a schematic diagram of the movement trajectories of the first side edge W and the second side edge N of the refrigerator in Embodiment 1 relative to the hinge assembly according to some embodiments;

[0035] Figure 12Schematic diagram of the movement of the first hinge shaft relative to the first track groove and the second hinge shaft relative to the second track groove in the first embodiment of a refrigerator according to some embodiments;

[0036] Figure 13 For the refrigerator according to some embodiments, when the door body in the first embodiment of the refrigerator is opened to Schematic diagram of the positions of the first hinge shaft relative to the first track groove and the second hinge shaft relative to the second track groove;

[0037] Figure 14 For the refrigerator according to some embodiments, when the door body in the first embodiment of the refrigerator is opened to Schematic diagram of the positions of the first hinge shaft relative to the first track groove and the second hinge shaft relative to the second track groove;

[0038] Figure 15 For the refrigerator according to some embodiments, when the door body in the first embodiment of the refrigerator is opened to Schematic diagram of the positions of the first hinge shaft relative to the first track groove and the second hinge shaft relative to the second track groove;

[0039] Figure 16 For the refrigerator according to some embodiments, when the door body in the first embodiment of the refrigerator is opened to Schematic diagram of the positions of the first hinge shaft relative to the first track groove and the second hinge shaft relative to the second track groove;

[0040] Figure 17 For the refrigerator according to some embodiments, when the door body in the first embodiment of the refrigerator is opened to Schematic diagram of the positions of the first hinge shaft relative to the first track groove and the second hinge shaft relative to the second track groove;

[0041] Figure 18 Schematic diagram of the gravity self - closing structure of a refrigerator according to some embodiments;

[0042] Figure 19 Exploded view of the fixing part and the moving part of the gravity self - closing structure of a refrigerator according to some embodiments;

[0043] Figure 20 Schematic diagram of the structure in which the abutting part abuts against the first inclined part during the process of the door body rotating and closing according to some embodiments;

[0044] Figure 21 Schematic diagram of the structure in which the abutting part abuts against the second end of the first inclined part during the process of the door body rotating and closing according to some embodiments;

[0045] Figure 22 Schematic diagram of the structure in which the abutting part abuts against the second inclined part during the process of the door body rotating and closing according to some embodiments;

[0046] Figure 23Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates and closes but does not rotate to the first set angle according to some embodiments;

[0047] Figure 24 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates and closes to the first set angle according to some embodiments;

[0048] Figure 25 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates and closes to the second set angle according to some embodiments;

[0049] Figure 26 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates and closes to the third set angle according to some embodiments;

[0050] Figure 27 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body closes according to some embodiments;

[0051] Figure 28 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body closes in Embodiment 1 according to some embodiments;

[0052] Figure 29 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates and closes to the first set angle in Embodiment 2 according to some embodiments;

[0053] Figure 30 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates and closes to the first set angle in Embodiment 3 according to some embodiments;

[0054] Figure 31 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates and closes to the first set angle in Embodiment 4 according to some embodiments;

[0055] Figure 32 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates and closes to the first set angle in Embodiment 5 according to some embodiments;

[0056] Figure 33 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates to a first set angle during the process of rotating and closing according to the sixth implementation manner of some embodiments;

[0057] Figure 34 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates to a first set angle during the process of rotating and closing according to the seventh implementation manner of some embodiments;

[0058] Figure 35 Schematic diagram of the positions where the first hinge shaft is located in the first track groove and the second hinge shaft is located in the second track groove when the door body rotates to a first set angle during the process of rotating and closing according to the eighth implementation manner of some embodiments;

[0059] Figure 36 Schematic diagram of the structure of a movable member having a first abutting surface and a second abutting surface according to some embodiments;

[0060] Figure 37 Schematic diagram of the structure of a movable member of another implementation manner having a first abutting surface and a second abutting surface according to some embodiments;

[0061] Figure 38 Schematic diagram of the structure of a movable member of another implementation manner having a first abutting surface and a second abutting surface according to some embodiments;

[0062] Figure 39 Schematic diagram of the structure of a movable member having a columnar abutting portion according to some embodiments;

[0063] Figure 40 Schematic diagram of the structure of a movable member of another implementation manner having a columnar abutting portion according to some embodiments;

[0064] Figure 41 Schematic diagram of the structure of a movable member having a roller - type abutting portion according to some embodiments;

[0065] Figure 42 Schematic diagram of the structure of a fixed member having a transition structure according to some embodiments;

[0066] Figure 43 Schematic diagram of the structure of a fixed member having balls according to some embodiments;

[0067] Figure 44 Schematic diagram of the structure of a fixed member according to some embodiments;

[0068] Figure 45 Schematic diagram of the structure of a fixed member having rollers according to some embodiments;

[0069] Figure 46 Schematic structural diagram of the fixing member where the first inclined portion and the second inclined portion face the first hinge shaft and the second hinge shaft according to some embodiments;

[0070] Figure 47 Schematic structural diagram of the fixing member with a convex guiding structure according to some embodiments;

[0071] Figure 48 Schematic structural diagram of the fixing member with a hidden guiding structure according to some embodiments;

[0072] Figure 49 Schematic structural diagram of the hinge plate according to some embodiments.

[0073] Explanation of reference numerals:

[0074] 1, refrigerator; 5, door seal; 10, cabinet; 30, door body; 40, hinge plate; 41, first hinge shaft; 42, second hinge shaft; 50, first track groove; 60, second track groove; 100, fixing member; 110, first inclined portion; 120, second inclined portion; 200, movable member; 210, abutting portion; 211, first abutting surface; 212, second abutting surface. Detailed implementation manners

[0075] As described in the background art, in the related art, a refrigerator includes a cabinet and a door body. The cabinet forms a receiving cavity for accommodating food or other items. The door body is movably disposed on the cabinet to close or open the receiving cavity through the door body. Exemplarily, the door body can be rotatably disposed on the cabinet. When the door body fits against the cabinet, the door body closes the receiving cavity. When an angle is formed between the door body and the cabinet, the door body opens the receiving cavity to take or put in food or other items through the receiving cavity.

[0076] However, 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 cabinet, due to the influence of the air pressure change in the receiving cavity, the door body is easily bounced off the surface of the cabinet, so that a gap is formed between the door body and the surface of the cabinet, thereby affecting the sealing performance of the receiving cavity.

[0077] In view of this, in the refrigerator according to the embodiment of the present application, by providing a gravity self-closing structure, the gravity self-closing structure includes a fixed member and a movable member that cooperate with each other. During the process of the door body rotating and closing, the abutting portion can move from the surface of the fixed member to the first end of the first inclined portion, and move along the first end of the first inclined portion to the second end of the first inclined portion. The movable member drives the door body to move upward through the abutting portion; and the abutting portion moves from the second end of the first inclined portion to the first end of the second inclined portion, and moves along the first end of the second inclined portion to the second end of the second inclined portion. The movable member drives the door body to move downward through the abutting portion, so that the abutting portion can move from the second end of the second inclined portion to the surface of the fixed member facing the movable member, so that the abutting portion can move from the side of the first inclined portion away from the second inclined portion to the side of the second inclined portion away from the first inclined portion;

[0078] Moreover, 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 second inclined portion to the first end of the second inclined portion, thereby playing a certain limiting role on the abutting portion through the second inclined portion and reducing the possibility of the movement of the abutting portion; during the process of the door body rotating and closing, when the abutting portion abuts against the second inclined portion, the abutting portion can move toward the second end of the second inclined portion under the action of the gravity of the door body, so that the process of the door body moving to the side of the second inclined portion away from the first inclined portion is more convenient.

[0079] To make the purpose, implementation manner and advantages of the present application clearer, the following will clearly and completely describe the exemplary implementation manner of the present application with reference to the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0080] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the following described implementation manner, rather than intending to limit the implementation manner of the present application. Unless otherwise specified, these terms should be understood in their ordinary and general meanings.

[0081] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion. For example, a product or device including 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.

[0082] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "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. It is only for the convenience of describing the present 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 thus should not be construed as a limitation to the present application.

[0083] Terms such as "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0084] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "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 the present application can be understood according to specific circumstances.

[0085] 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 of 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 scope of protection of the present application.

[0086] In a first aspect, an embodiment of the present application provides a refrigerator. Referring to Figure 1 , the refrigerator 1 includes a cabinet 10 having a receiving cavity, a door 30 connected to the cabinet 10 to open and close the receiving cavity, and a refrigeration device for supplying cold air to the receiving cavity. The cabinet 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.

[0087] The cabinet 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.

[0088] A pick-and-place opening is formed at the front end of the accommodation cavity, through which users can place food into the accommodation cavity or take food out of the accommodation cavity. A rotatable door body 30 is provided on the cabinet 10 to open or close the pick-and-place opening of the accommodation cavity. For example, the door body 30 is rotatably connected to the cabinet 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.

[0089] The cabinet 10 includes a first body side wall (i.e., one of the left side wall and the right side wall of the cabinet 10) and a second body side wall (i.e., the other of the left side wall and the right side wall of the cabinet 10) that are oppositely arranged. The hinge assembly is provided on the cabinet 10 and close to the first body side wall.

[0090] The door body 30 has a front door wall 31 that is away from the cabinet 10 when the door body 30 is closed, a rear door wall 33 that is 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 cabinet 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 cabinet 10, the left side wall of the door body 30 is the door side wall 32.

[0091] 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 rear door wall 33 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 cabinet 10 of the second side edge N.

[0092] It should be noted that when both the front door wall 31 and the door side 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 door side wall 32 is located is the theoretical first side edge W. The rounded corner transition setting at the intersection of the front door wall 31 and the door side 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 ).

[0093] 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 setting at the intersection of the rear door wall 33 and the door side wall 32, the intersection line of the planes where the rear door wall 33 and the door side wall 32 are located can be used to represent the second side edge N, or a straight line that is close to and parallel to this intersection line can be used to represent the second side edge N.

[0094] As shown in Figure 2 and Figure 3 , a door seal 5 is provided on the rear wall of the door body 30. When the door body 30 is closed, the door seal 5 surrounds the pick-and-place opening and fits with the front end surface of the cabinet 10 to effectively seal the connection between the door body 30 and the cabinet 10, thereby ensuring that the door body 30 seals the pick-and-place opening and preventing cold air from leaking. For example, the door seal 5 is in a ring shape.

[0095] Next, taking the refrigerator 1 placed in a cabinet (such asFigure 3 In the structure on the right side of the refrigerator 1 as an example, the structure of the hinge assembly will be described. Refer to Figures 2 to 4 , the hinge assembly includes a first hinge shaft 41 (i.e., the main hinge shaft) and a second hinge shaft 42 (i.e., the auxiliary hinge shaft) located on the side of the first hinge shaft 41 away from the first body side wall. At the end of the door body 30 close to the hinge assembly, a first track groove 50 and a second track groove 60 are provided. The first hinge shaft 41 is adapted to the first track groove 50, and the second hinge shaft 42 is adapted to the second track groove 60. During the process of the door body 30 rotating open or closed, the first hinge shaft 41 moves relative to the first track groove 50, and the second hinge shaft 42 moves relative to the second track groove 60.

[0096] The hinge assembly includes a hinge plate 40 fixedly connected to the cabinet 10. The hinge plate 40 includes a connecting portion 401 connected to the cabinet 10 and an extending portion 402 extending forward from the connecting portion 401 and being in the shape of a horizontal plate. The connecting portion 401 can be connected to the cabinet 10 through fasteners such as screws, pins, and bolts.

[0097] Exemplarily, refer to Figure 4 , for the hinge assembly located at the upper end of the door body 30, the hinge assembly includes a hinge plate 40 connected to the upper end of the cabinet 10. The first hinge shaft 41 and the second hinge shaft 42 are connected to the hinge plate 40 to form a defining shaft for guiding the movement of the door body 30. The hinge plate 40, the first hinge shaft 41, and the second hinge shaft 42 can be integrally formed, or can be separately provided and assembled with each other. Among them, the first hinge shaft 41 and the second hinge shaft 42 are provided on the extending portion 402 and extend vertically downward.

[0098] Refer to Figures 5 - 8 , for the hinge assembly located at the lower end of the door body 30, the connecting portion 401 is connected to the front end face of the cabinet 10. The first hinge shaft 41 and the second hinge shaft 42 are arranged on the hinge plate 40 and extend upward.

[0099] Corresponding to the position of the hinge plate 40, the first track groove 50 and the second track groove 60 are provided at both the upper and lower ends of the door body 30. Exemplarily, the positions of the two first track grooves 50 at the upper and lower ends of the door body 30 correspond to each other in the height direction of the refrigerator 1, and the positions of the two second track grooves 60 correspond to each other in the height direction of the refrigerator 1, so that the movements of the upper and lower end portions of the door body 30 are kept consistent, thereby making the opening or closing of the door body 30 smoother.

[0100] In this embodiment, continue to refer to Figure 2 , the plane where the side wall (i.e., the first body side wall) of the cabinet 10 close to the hinge plate 40 is defined as a reference plane M 0 , when the refrigerator 1 is housed in the cabinet, the reference plane M is defined 0The side close to the cabinet is the outer side, and the side opposite to it, which is close to the accommodation cavity, is the inner side.

[0101] It can be understood that in order for the door body 30 of the refrigerator 1 to be opened normally, during the rotation of the door body 30, the first side edge W cannot exceed the reference plane M 0 too much to prevent the first side edge W from colliding with the cabinet and causing the door body 30 to be unable to be opened normally.

[0102] In summary, if the door body 30 can move towards the inner side during rotation, the first side edge W will not exceed the reference plane M 0 too much. For example, when the hinge plate 40 is provided on the right side of the door body 30, the inner side is the reference plane M 0 on the left side, then the door body 30 needs to move to the left during rotation. When the hinge plate 40 is provided on the left side of the door body 30, the inner side is the reference plane M 0 on the right side, then the door body 30 needs to move to the right during rotation.

[0103] Exemplarily, as Figure 3 shown, the central trace line of the first trace groove 50 is denoted as the first trace line S, and the first trace line S is defined by the shape of the first trace groove 50. The first trace line S includes a straight trace segment and a curved trace segment that are smoothly transitionally connected. The straight trace segment extends towards the direction close to the door side wall 32, and the curved trace segment is located on the side of the straight trace segment close to the door side wall 32 and bulges towards the direction close to the second side edge N.

[0104] The first trace groove 50 has a first inflection point. The first inflection point divides the first trace groove 50 into a curved groove segment and a straight groove segment. The part of the first trace groove 50 between the first end of the first trace groove 50 and the first inflection point forms the curved groove segment, and the central trace line of the curved groove segment is correspondingly denoted as the curved trace segment; the part of the first trace groove 50 between the first inflection point and the second end of the first trace groove 50 forms the straight groove segment, and the central trace line of the straight groove segment is correspondingly denoted as the straight trace segment.

[0105] The second trace groove 60 can be set as a curved groove. One end of the second trace groove 60 is farther away from the door rear wall 33 and the door side wall 32 than the other end of the second trace groove 60. The second trace groove 60 bulges towards the direction close to the door rear wall 33. The central trace line of the second trace groove 60 is denoted as the second trace line K. The second trace line K is defined by the shape of the second trace groove 60, and the second trace line K is curved and bulges towards the direction close to the door rear wall 33.

[0106] The second inflection point divides the second track groove 60 into a first curve segment and a second curve segment; a part of the second track groove 60 between the first end of the second track groove 60 and the second inflection point forms the first curve segment, and a part of the second track groove between the second inflection point and the second end of the second track groove forms the second curve segment.

[0107] When the door body 30 rotates by a unit angle, the speed of the first hinge shaft 41 located in the curve groove segment is less than the speed of the first hinge shaft located in the straight groove segment; the curvature of the second curve segment is less than the curvature of the first curve segment, and when the door body 30 rotates by a unit angle, the speed of the second hinge shaft located in the first curve segment is less than the speed of the second hinge shaft located in the second curve segment.

[0108] Alternatively, the first track groove 50 can also be set as a curve groove, and the first inflection point divides the first track groove 50 into a first curve part and a second curve part; a part of the first track groove 50 between the first end of the first track groove 50 and the first inflection point forms the first curve part, and a part of the first track groove 50 between the first inflection point and the second end of the first track groove 50 forms the second curve part.

[0109] Among them, as Figure 5 shown, the first track line S 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 S extends from the first positioning point P 1 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 P 6 ;

[0110] Exemplarily, the first track line S extends from the first positioning point P 1 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 door front wall 31 to the sixth positioning point P 6 . The distance between the first positioning point P 1 and the door front wall 31 is denoted as D 1 , and the distance between the sixth positioning point P 6 and the door front wall 31 is denoted as D 2 , and D 1 > D 2 .

[0111] Exemplarily, the sixth positioning point P 6 is located on the side of the first positioning point P 1 close to the door side wall 32 and far from the door front wall 31, that is, the first track line S extends from the first positioning point P 1 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 door front wall 31 to the sixth positioning point P 6 .

[0112] Hereinafter, taking the first locus line S starting from the first positioning point P 1 extending linearly in a direction close to the door side wall 32 first, and then extending curvilinearly in a direction close to the door side wall 32 and the front door wall 31 to the sixth positioning point P 6 as an example for illustration.

[0113] As Figure 5 shown, the second locus line K includes a first guiding point Q away from the door side wall 32 1 and a sixth guiding point Q close to the door side wall 32 6 . The sixth guiding point Q 6 is located on the side of the first guiding point Q 1 away from the front door wall 31 and close to the door side wall 32. The second locus line K extends curvilinearly from the first guiding point Q 1 in a direction away from the front door wall 31 and close to the door side wall 32 to the sixth guiding point Q 6 .

[0114] 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 locus line S, and the central axis of the second hinge shaft (guiding central axis Q) is located at the first guiding point Q1 of the second locus line K. 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 close to the door side wall 32 and the rear door wall 33.

[0115] The distance between the first guiding point Q 1 and the front door wall 31 is denoted as Z 1 , and the distance between the sixth guiding point Q 6 and the front door wall 31 is denoted as Z 2 . By way of example, Z 1 <D 2 <D 1 <Z 2 . The above settings enable the second locus groove 60 to effectively limit the movement of the second hinge shaft 42 to drive the first hinge shaft 41 to move within the first locus groove 50, 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.

[0116] As Figure 5 shown, in this embodiment, when the door body 30 is in the closed state, the central axis of the first hinge shaft 41 (positioning central axis P) is located at the first positioning point P 1 of the first locus line S, and the central axis of the second hinge shaft 42 (guiding central axis Q) is located at the first guiding point Q 1 of the second locus line K. That is, when the door body 30 is in the closed state, the first hinge shaft 41 is located on the side of the second hinge shaft 42 close to the door side wall 32 and the rear door wall 33.

[0117] Combined with Figure 5 , when the door body 30 is in the closed state, the distance between the first hinge axis 41 and the second hinge axis 42 in the first direction parallel to the door side wall 32 is denoted as L 1 = D 1 - Z 1 , and 2.5mm ≤ L 1 ≤ 10mm. The distance between the first hinge axis 41 and the second hinge axis 42 in the second direction perpendicular to the door side wall 32 is denoted as L 2 , and 7.5mm ≤ L 2 ≤ 30mm. For example, when L 1 = 5mm and L 2 = 15mm, the thickness of the door body 30 is between 44mm and 53mm, so that when the door body 30 is opened, the distance that the first side edge W exceeds the reference plane M 0 is relatively small. For example, this distance is less than 3mm.

[0118] For example, L 1 is 2.5mm, 5mm, 7.5mm or 10mm, and L 2 is 7.5mm, 15mm, 25mm or 30mm.

[0119] During the process of the door body 30 rotating and closing, when the door body 30 rotates from the maximum angle G max to the closed state, the first hinge axis moves relative to the first track groove 50 and always moves away from the door side wall 32, and the second hinge axis moves relative to the second track groove 60 and always moves away from the door side wall 32. That is, during the entire process of the door body 30 closing, the first hinge axis and the second hinge axis both maintain one-way movement without reversing, so that the force directions of the first hinge axis and the second hinge axis always remain the same, which is beneficial to improving the feel of opening and closing the door body 30, enhancing the user experience, and extending the service life of the first track groove 50 and the second track groove 60. In addition, during the process of the door body 30 closing, the first hinge axis and the second hinge axis keep moving, making the acceleration change of the door body 30 smaller, which is beneficial to improving the smoothness of the door body 30 when it is opened.

[0120] 0° < G 1 < G 2 < G 3 < G 4 < G max . The first positioning point P 1 , the second positioning point P 2 , the third positioning point P 3 , the fourth positioning point P 4 , the fifth positioning point P 5 , the sixth positioning point P 6Are distributed along the first track line S in sequence. And the second positioning point P 2 , the third positioning point P 3 , the fourth positioning point P 4 Are distributed along the straight track segment in the direction close to the door side wall 32. The fourth positioning point P 4 , the fifth positioning point P 5 , the sixth positioning point P 6 Are distributed along the curved track segment in the direction close to the door side wall 32 and close to the front door wall 3131.

[0121] Exemplarily, the first guiding point Q 1 , the second guiding point Q 2 , the third guiding point Q 3 , the fourth guiding point Q 4 , the fifth guiding point Q 5 , the sixth guiding point Q 6 Are distributed along the first track line S in sequence. And the second guiding point Q 2 , the third guiding point Q 3 , the fourth guiding point Q 4 , the fifth guiding point Q 5 Are distributed along the second track line K in the direction close to the door side wall 32 and away from the front door wall 31. The fifth guiding point Q 5 , the sixth guiding point Q 6 Are distributed along the second track line K in the direction close to the door side wall 32 and close to the front door wall 31. It should be noted that G 1 , G 2 , G 3 , G 4 , G max Can be sequentially recorded as the first angle, the second angle, the third angle, the fourth angle, and the maximum angle.

[0122] In the following description, Represents the opening angle of the door body 30. When the door body 30 is in the closed state, the opening angle When the door body 30 is opened relative to the box body 10 to open the access opening, the opening angle Is a positive number;

[0123] Such as Figure 5 Shown, When, the door body 30 is in the closed state; the positioning central axis P is located at the first positioning point P of the first track line S 1 , and the guiding central axis Q is located at the first guiding point Q of the second track line K 1 .

[0124] Such as Figure 6 Shown, When, the door body 30 is opened from the closed state to less than G 2The process of any angle, in which the first hinge axis 41 moves along the straight track segment of the first track line S towards the door side wall 32, and the second hinge axis 42 moves along the curved second track line K towards the door side wall 32 and away from the front door wall 31.

[0125] Above, when the opening angle of the door body 30 At this time, the movement trend of the door body 30 remains unchanged; the difference is that when the door body 30 is opened to different angles, the position of the first hinge axis 41 relative to the straight track segment of the first track line S is different, and the position of the second hinge axis 42 relative to the second track line K is different.

[0126] In this way, when the opening angle of the door body 30 At this time, any angle within the range of 0° to G 2 can represent the relative positions of the first hinge axis 41 and the first track groove 50, and the second hinge axis 42 and the second track groove 60 when the door body 30 is opened to the interval (0°, G 2 ). As Figure 6 and Figure 13 shown, use to represent the position within this opening angle interval for comparison with when the door body 30 is opened to other angles.

[0127] As Figure 6 and Figure 13 shown, when the door body 30 is opened to G 1 , the positioning center axis P is located at the second positioning point P 2 of the first track line S, and the second positioning point P 2 is located on the side closer to the door side wall 32 than the first positioning point P 1 . The guiding center axis Q is located at the second guiding point Q 2 of the second track line K, and the second guiding point Q 2 is located on the side closer to the door side wall 32 and away from the front door wall 31 than the first guiding point Q 1 .

[0128] As Figure 7 and Figure 14 shown, when , the door body 30 rotates and opens to G 2 . The positioning center axis P is located at the third positioning point P 3 of the straight track segment of the first track line S, and the third positioning point P 3 is located on the side closer to the door side wall 32 than the second positioning point P 2 . The third positioning point P 3 is the end point of the straight track segment closer to the door side wall 32, that is, the third positioning point P 3 is the end point of the relative movement of the first hinge axis 41 along the straight line towards the door side wall 32 relative to the first track groove 50.

[0129] The guiding central axis Q is located at the third guiding point Q of the second trajectory line K 3 , the third guiding point Q 3 is located at the second guiding point Q 2 on the side close to the door side wall 32 and far from the door front wall 31. For example, G 2 ∈ any value in [26°, 30°]. To sum up, when the door body 30 is opened from the closed state to G 2 during the process, the first hinge axis 41 moves along a straight line in the direction close to the door side wall 32, and the second hinge axis 42 moves along a curve in the direction close to the door side wall 32 and far from the door front wall 31.

[0130] As Figure 8 shown when, the door body 30 is opened from G 2 to any angle less than G 4 during the process, in this process, the first hinge axis 41 moves along the curved trajectory segment of the first trajectory line S in the direction close to the door side wall 32 and close to the door front wall 31, and the second hinge axis 42 moves along the second trajectory line K in the direction close to the door side wall 32 and far from the door front wall 31.

[0131] Above, when the opening angle of the door body 30 is, the movement trend of the door body 30 remains unchanged; the difference is that: when the opening angle of the door body 30 is different, the position of the first hinge axis 41 relative to the curved trajectory segment of the first trajectory line S is different, and the position of the second hinge axis 42 relative to the second trajectory line K is different. Similarly, when the opening angle of the door body 30 is within, select G 2 to G 4 any opening angle within the range can represent the relative positions of the first hinge axis 41 and the first trajectory groove 50, and the second hinge axis 42 and the second trajectory groove 60 when the door body 30 is opened to this interval. For example, as Figure 15 shown, taking to represent the position of the door body 30 within this angle interval for comparison with when the door body 30 is opened to other angles.

[0132] See Figure 8 and Figure 15 , when the door body 30 is opened to G 3 , the positioning central axis P is located at the fourth positioning point P of the first trajectory line S 4 , the fourth positioning point P 4 is located at the third positioning point P 3 on the side close to the door side wall 32 and close to the door front wall 31; the guiding central axis Q is located at the fourth guiding point Q of the second trajectory line K 4 , the fourth guiding point Q 4Located at the third guiding point Q 3 On the side close to the door side wall 32 and far from the door front wall 31. For example, G 3 ∈[43°, 47°]; In this embodiment, G is set 3 = 45°.

[0133] Such as Figure 9 and Figure 16 shown, when the door body 30 rotates and opens to G 4 . The positioning central axis P is located at the fifth positioning point P of the curved track segment of the first track line S 5 , and the fifth positioning point P 5 is located on the side close to the door side wall 32 and close to the door front wall 31 of the fourth positioning point P 4 . The guiding central axis Q is located at the fifth guiding point Q of the second track line K 5 , and the fifth guiding point Q 5 is located on the side close to the door side wall 32 and far from the door front wall 31 of the fourth guiding point Q 4 . For example, G 4 ∈[88°, 92°].

[0134] In this embodiment, when the door body is opened to 90°, the position of the first hinge shaft 41 relative to the position of the first track groove 50 when the door body 30 is closed is on the side close to the door side wall 32; that is, the fifth positioning point P 5 is located on the side close to the door side wall 32 of the first positioning point P 1 .

[0135] Such as Figure 10 shown, when the door body 30 rotates and opens from G 4 to G max , in this process, the first hinge shaft 41 moves along the curved track segment of the first track line S in the direction close to the door side wall 32 and close to the door front wall 31, and the second hinge shaft 42 moves along the second track line K in the direction close to the door side wall 32 and close to the door front wall 31. In this embodiment, G max = 116°.

[0136] Above, when the opening angle of the door body 30 the movement trend of the door body 30 remains unchanged; when the door body 30 is opened to different angles between G 4 and G max , the position of the first hinge shaft 41 relative to the curved track segment of the first track line S is different, and the position of the second hinge shaft 42 relative to the second track line K is different.

[0137] Similarly, when the opening angle of the door body 30 is such that, any opening angle within this range can represent the relative positions of the first hinge axis 41 and the first track groove 50, and the second hinge axis 42 and the second track groove 60 when the door body 30 is opened to this range. For example, as Figure 17 shown, taking to represent the position of the door body 30 within this opening angle range for comparison with other states when the door body 30 is opened.

[0138] When the door body 30 is opened to G max > 90°, the positioning center axis P is located at the sixth positioning point P 6 of the first track line S. The sixth positioning point P 6 is located on the side closer to the door side wall 32 and closer to the door front wall 31 than the fifth positioning point P 5 . The guiding center axis Q is located at the sixth guiding point Q 6 of the second track line K. The sixth guiding point Q 6 is located on the side closer to the door side wall 32 and closer to the door front wall 31 than the fifth guiding point Q 5 .

[0139] It should be noted that some embodiments of the present disclosure are not limited to the above settings. In some embodiments, during the process of the door body 30 being opened from G 4 to G max , the second hinge axis 42 moves relative to the second track groove 60 in a direction closer to the door side wall 32, while the first hinge axis 41 retracts relative to the first track groove 50, that is, the first hinge axis 41 moves relative to the first track groove 50 in a direction away from the door side wall 32.

[0140] For example, the sixth positioning point Q 6 is located on the side closer to the door side wall 32 than the fifth positioning point Q 5 . During the opening of the door body 30, after the guiding center axis Q moves to the fifth positioning point Q 5 , as the door body 30 continues to open, the guiding center axis Q continues to move in a direction closer to the door side wall 32 to the sixth positioning point Q 6 , and the positioning center axis P moves along the first track line S in a direction away from the door side wall 32 to the sixth positioning point Q 6 .

[0141] It can be understood that in combination with the door body 30 being opened to specific angles (including the first angle G 1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 and the maximum angle G max) When the positions of the two hinge axes relative to the two track grooves are known, the mating relationships of the first hinge axis 41 relative to the first track groove 50 and the second hinge axis 42 relative to the second track groove 60 include the following cases.

[0142] When the opening angle of the door body 30 is such that, the first hinge axis 41 moves along the straight track segment of the first track groove 50. When the opening angle of the door body 30 is such that, the first hinge axis 41 moves to the end point of the straight track segment of the first track groove 50 that is closer to the door side wall 32 (i.e., the third positioning point P 3 ). When the opening angle of the door body 30 is such that, the first hinge axis 41 moves along the curved track segment of the first track groove 50.

[0143] When the opening angle of the door body 30 (such as G 4 = 90°), the second hinge axis 42 moves along the second track groove 60 in a direction closer to the door side wall 32 and away from the door front wall 31. When the opening angle of the door body 30 is such that, the second hinge axis 42 moves along the second track groove 60 in a direction closer to the door side wall 32 and closer to the door front wall 31.

[0144] In this embodiment, during the process of the door body 30 being opened from the closed state to G max , relative to the position of the central axis P of the first hinge axis 41 when the door body 30 is closed, the door body 30 always moves towards the inner side. That is, when taking the first hinge axis 41 as a stationary reference, during the process of the door body 30 being opened from the closed state to G max , the door body 30 always moves towards the inner side relative to the central axis P of the first hinge axis 41.

[0145] When taking the door body 30 (or, the first track groove 50 and the second track groove 60) as a stationary reference, the position of the first hinge axis 41 when the door body 30 is closed is denoted as the first initial position. Then, during the process of the door body 30 being opened from the closed state to G max , the distance between the first hinge axis 41 and the first initial position gradually increases. That is, during the process of the door body 30 being opened from the closed state to G max , the first hinge axis 41 always moves towards the door side wall 32 relative to the door body 30.

[0146] Exemplarily, during the process of the door body 30 being rotated and opened from G 2 to G maxDuring the process, the first hinge axis 41 moves along the curved trajectory segment of the first trajectory line S in a direction close to the door side wall 32 and close to the front wall 31 of the door. For each unit angle of rotation and opening of the door body 30, the rate at which the first hinge axis 41 moves in the direction close to the front wall 31 of the door is approximately equal to the rate at which it moves in the direction close to the door side wall 32 (i.e., the difference between the two rates is less than 1 mm).

[0147] Referring to Figure 18 and Figure 19 In some embodiments, the refrigerator further includes a gravity self-closing structure. The gravity self-closing structure can be disposed at the lower end of the door body 30, and the gravity self-closing structure can include a cooperating fixed member 100 and a movable member 200.

[0148] Among them, the fixed member 100 can be fixedly disposed on the cabinet 10, and the movable member 200 can be fixedly disposed on the door body 30. The movable member 200 and the fixed member 100 can be arranged in the vertical direction, and the hinge assembly at the lower end of the door body 30 can be reused to form at least one of the fixed member 100 and the movable member 200, so as to make the formation process of the gravity self-closing structure more convenient.

[0149] When the door body rotates and closes to the closed state, the door body 30 can move toward the cabinet 10 through the gravity self-closing structure, so that the door body 30 can abut against the cabinet 10, reducing the gap between the door body 30 and the cabinet 10.

[0150] Exemplarily, the surface of the fixed member 100 facing the movable member 200 can be provided with a first inclined portion 110 and a second inclined portion 120. Among them, the first end of the first inclined portion 110 is connected to the fixed member 100, the second end of the first inclined portion 110 is closer to the movable member 200 relative to the first end of the first inclined portion 110, and the first inclined portion 110 is inclined upward. The first end of the second inclined portion 120 is connected to the second end of the first inclined portion 110, the second end of the second inclined portion 120 is connected to the fixed member 100, and the second inclined portion 120 is inclined downward.

[0151] The surface of the movable member 200 facing the fixed member 100 can be provided with an abutting portion 210. The abutting portion 210 can be used to abut against the surface of the fixed member 100 facing the movable member 200. The abutting portion 210 can also be used to abut against the first inclined portion 110 and the second inclined portion 120, so that the movable member 200 drives the door body 30 to move up and down in the vertical direction through the abutting portion 210.

[0152] The height of the first inclined portion 110 can be equal to the height of the second inclined portion 120, and the first inclined portion 110 can be connected to the second inclined portion 120, so that the abutting portion 210 can move from the first inclined portion 110 to the second inclined portion 120, or move from the second inclined portion 120 to the first inclined portion 110.

[0153] Among them, the first inclined portion 110 can be configured such that when the abutting portion 210 abuts against the first inclined portion 110 and moves from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, the movable member 200 can drive the door body 30 to move upward through the abutting portion 210. When the abutting portion 210 abuts against the first inclined portion 110 and moves from the second end of the first inclined portion 110 to the first end of the first inclined portion 110, the movable member 200 can drive the door body 30 to move downward through the abutting portion 210.

[0154] The second inclined portion 120 can be configured such that when the abutting portion 210 abuts against the second inclined portion 120 and moves from the first end of the second inclined portion 120 to the second end of the second inclined portion 120, the movable member 200 can drive the door body 30 to move downward through the abutting portion 210. When the abutting portion 210 abuts against the second inclined portion 120 and moves from the second end of the second inclined portion 120 to the first end of the second inclined portion 120, the movable member 200 can drive the door body 30 to move upward through the abutting portion 210.

[0155] Exemplarily, when the door body 30 is in the closed state (i.e., at this time), the abutting portion 210 can abut against the surface of the fixing member 100 facing the movable member 200, and the abutting portion 210 can be located on the side of the second inclined portion 120 away from the first inclined portion 110. When the door body 30 is in the open state (for example at this time), the abutting portion 210 can abut against the surface of the fixing member 100 facing the movable member 200, and the abutting portion 210 is located on the side of the first inclined portion 110 away from the second inclined portion 120.

[0156] Referring to Figures 20 - 22 , during the process of the door body 30 rotating and opening, the abutting portion 210 can move from the surface of the fixing member 100 to the second end of the second inclined portion 120, and move along the second end of the second inclined portion 120 to the first end of the second inclined portion 120. The movable member 200 drives the door body 30 to move upward through the abutting portion 210. The abutting portion 210 moves from the first end of the second inclined portion 120 to the second end of the first inclined portion 110, and moves along the second end of the first inclined portion 110 to the first end of the first inclined portion 110. The movable member 200 drives the door body 30 to move downward through the abutting portion 210, so that the abutting portion 210 can move from the first end of the first inclined portion 110 to the surface of the fixing member 100 facing the movable member 200, such that the abutting portion 210 can move from the side of the second inclined portion 120 away from the first inclined portion 110 to the side of the first inclined portion 110 away from the second inclined portion 120.

[0157] Referring to Figures 20 - 22, during the process of the door body 30 rotating and closing, the abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110, and move along the first end of the first inclined portion 110 to the second end of the first inclined portion 110. The movable member 200 drives the door body 30 to move upward through the abutting portion 210; and the abutting portion 210 moves from the second end of the first inclined portion 110 to the first end of the second inclined portion 120, and moves along the first end of the second inclined portion 120 to the second end of the second inclined portion 120. The movable member 200 drives the door body 30 to move downward through the abutting portion 210, so that the abutting portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixing member 100 facing the movable member 200, so that the abutting portion 210 can move from the side of the first inclined portion 110 away from the second inclined portion 120 to the side of the second inclined portion 120 away from the first inclined portion 110.

[0158] It is easy to understand that when the abutting portion 210 is located on the surface of the fixing member 100, the bottom of the abutting portion 210 can abut on the surface of the fixing member 100, or the bottom of the abutting portion 210 can also be spaced from the surface of the fixing member 100. Exemplarily, the following describes taking the bottom of the abutting portion 210 abutting on the surface of the fixing member 100 as an example.

[0159] 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 210 to move from the second end of the second inclined portion 120 to the first end of the second inclined portion 120, so as to play a certain limiting role on the abutting portion 210 through the second inclined portion 120 and reduce the possibility of the abutting portion 210 moving; and, during the process of the door body 30 rotating and closing, when the abutting portion 210 abuts on the second inclined portion 120, the abutting portion 210 can move toward the second end of the second inclined portion 120 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 120 away from the first inclined portion 110 is more convenient.

[0160] Exemplarily, when the abutting portion 210 moves to the side of the second inclined portion 120 away from the first inclined portion 110, the door seal 5 located on the rear wall of the door body 30 can surround the access opening, so that the door seal 5 fits against the front end surface of the box body 10, so as to effectively seal the connection between the door body 30 and the box body 10, so that the gravity self-closing structure and the door seal 5 can cooperate with each other to ensure that the door body 30 seals the access opening and prevent cold air from leaking out.

[0161] Refer to Figures 18 - 22, in some embodiments, in the hinge assembly located at the lower end of the door body 30, the first hinge shaft 41 and the second hinge shaft 42 can be disposed on the surface of the fixed member 100 facing the movable member 200, and both the first hinge shaft 41 and the second hinge shaft 42 can extend upward in the vertical direction; and the first track groove 50 and the second track groove 60 can be correspondingly disposed on the surface of the movable member 200 facing the fixed member 100.

[0162] During the process of the door body 30 rotating to open or close, in the horizontal direction, the first hinge shaft moves relative to the first track groove 50 along the extension direction of the first track groove 50, and the second hinge shaft moves relative to the second track groove 60 along the extension direction of the second track groove 60; in the vertical direction, when the movable member 200 drives the door body 30 to move vertically through the abutting portion 210, the fixed member 100 is fixed relative to the door body 30, so that the first hinge shaft moves relative to the first track groove 50 in the vertical direction, and the second hinge shaft moves relative to the second track groove 60 in the vertical direction.

[0163] Exemplarily, when the movable member 200 drives the door body 30 to move upward through the abutting portion 210, a part of the first hinge shaft 41 extends out of the first track groove 50, and the distance between the first hinge shaft 41 and the bottom surface of the first track groove 50 increases; a part of the second hinge shaft 42 extends out of the second track groove 60, and the distance between the second hinge shaft 42 and the bottom surface of the second track groove 60 increases.

[0164] It is easy to understand that the length of the first hinge shaft 41 extending out of the first track groove 50 and the length of the second hinge shaft 42 extending out of the second track groove 60 are equal to the distance between the second end of the first inclined portion 110, the first end of the second inclined portion 120 and the surface of the fixed member 100, and the greater the length of the first hinge shaft 41 located in the first track groove 50, the better the stability of the first hinge shaft 41, and the greater the length of the second hinge shaft 42 located in the second track groove 60, the better the stability of the second hinge shaft 42.

[0165] Exemplarily, when the distance between the second end of the first inclined portion 110, the first end of the second inclined portion 120 and the surface of the fixed member 100 remains unchanged, the stability of the first hinge shaft 41 in the first track groove 50 can be improved by increasing the length of the first hinge shaft 41 and the depth of the first track groove 50, and the stability of the second hinge shaft 42 in the second track groove 60 can be improved by increasing the length of the second hinge shaft 42 and the depth of the second track groove 60, so as to reduce the possibility of the movable member 200 being separated from the fixed member 100.

[0166] For example, when the abutting portion 210 abuts against the surface of the fixing member 100 facing the movable member 200, the length of the first hinge shaft 41 located in the first track groove 50 is set as the first length of the first hinge shaft 41, and the length of the second hinge shaft 42 located in the second track groove 60 is set as the first length of the second hinge shaft 42; when the abutting portion 210 abuts against the second end of the first inclined portion 110 or the first end of the second inclined portion 120, the length of the first hinge shaft 41 located in the first track groove 50 is set as the second length of the first hinge shaft 41, and the length of the second hinge shaft 42 located in the second track groove 60 is set as the second length of the second hinge shaft 42.

[0167] Wherein, the difference between the first length and the second length of the first hinge shaft 41 is equal to the distance between the second end of the first inclined portion 110, the first end of the second inclined portion 120 and the surface of the fixing member 100. The ratio of the first length to the second length of the first hinge shaft 41 can be set to be greater than or equal to 2 / 3 to ensure the stability of the movement of the first hinge shaft 41 in the first track groove 50, and the ratio of the first length to the second length of the second hinge shaft 42 can be set to be greater than or equal to 2 / 3 to ensure the stability of the movement of the second hinge shaft 42 in the second track groove 60.

[0168] Exemplarily, when the distance between the second end of the first inclined portion 110, the first end of the second inclined portion 120 and the surface of the fixing member 100 is set to 2 mm, the length of the first hinge shaft 41 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 first hinge shaft 41 can be set to 11 mm, and the depth of the first track groove 50 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 first track groove 50 can be set to 7 mm; the length of the second hinge shaft 42 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 second hinge shaft 42 can be set to 9 mm, and the depth of the second track groove 60 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 second track groove 60 can be set to 5 mm.

[0169] When the abutting portion 210 abuts against the surface of the fixing member 100 facing the movable member 200, one end of the first hinge shaft 41 away from the fixing member 100 can abut against the bottom surface of the first track groove 50, the first length of the first hinge shaft 41 is equal to 7 millimeters, one end of the second hinge shaft 42 away from the fixing member 100 can abut against the bottom surface of the second track groove 60, and the first length of the second hinge shaft 42 is equal to 5 millimeters; when the abutting portion 210 moves to the second end of an inclined portion or the first end of the second inclined portion 120, the length of the first hinge shaft 41 extending out of the first track groove 50 is equal to 2 millimeters, the second length of the first hinge shaft 41 is equal to 5 millimeters, the length of the second hinge shaft 42 extending out of the second track groove 60 is equal to 2 millimeters, and the second length of the second hinge shaft 42 is equal to 3 millimeters.

[0170] Exemplarily, the included angle between the connection line between the first hinge shaft 41 and the second hinge shaft 42 and the arrangement direction of the first inclined portion 110 and the second inclined portion 120 can be set to be greater than or equal to 0 degrees and less than or equal to 45 degrees. For example, the included angle between the connection line between the first hinge shaft 41 and the second hinge shaft 42 and the arrangement direction of the first inclined portion 110 and the second inclined portion 120 can be set to one of 0 degrees - 5 degrees, 5 degrees - 10 degrees, 10 degrees - 15 degrees, 15 degrees - 20 degrees, 20 degrees - 25 degrees, 25 degrees - 30 degrees, 30 degrees - 35 degrees, 35 degrees - 40 degrees, 40 degrees - 45 degrees.

[0171] In some embodiments, the positions of the first inclined portion 110 and the second inclined portion 120 can be determined according to the opening angle of the door body 30; for example, the opening angle of the door body 30 can have a first set angle, a second set angle, and a third set angle that decrease in sequence. Among them, when the opening angle of the door body 30 is set to the first set angle, the abutting portion 210 abuts against the first end of the first inclined portion 110; when the opening angle of the door body 30 is set to the second set angle, the abutting portion 210 abuts against the second end of the first inclined portion 110; when the opening angle of the door body 30 is set to the third set angle, the abutting portion 210 abuts against the second end of the second inclined portion 120.

[0172] Exemplarily, when the opening angle of the door body 30 is set to: degrees, the abutting portion 210 abuts against the first inclined portion 110. When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 210 abuts against the first end of the first inclined portion 110. 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 210 abuts against the second end of the first inclined portion 110; when the opening angle of the door body 30 is set to: When the opening angle of the door body 30 is at a certain degree, the abutting portion 210 abuts against the second inclined portion 120. 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 a third set angle, and the abutting portion 210 abuts against the second end of the second inclined portion 120. When the opening angle of the door body 30 is at a certain degree, the abutting portion 210 can move from the second end of the first inclined portion 110 towards the first end of the second inclined portion 120.

[0173] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 is at a certain degree, the abutting portion 210 abuts against the surface of the fixing member 100, and the abutting portion 210 is located on the side of the first inclined portion 110 away from the second inclined portion 120. When the opening angle of the door body 30 is at a certain degree, the abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110; when the opening angle of the door body 30 is set to: is at a certain degree, the abutting portion 210 abuts against the first inclined portion 110, and the moving member 200 drives the door body 30 to move upward through the abutting portion 210;

[0174] When the opening angle of the door body 30 is at a certain degree, the abutting portion 210 can move from the second end of the first inclined portion 110 to the first end of the second inclined portion 120; when the opening angle of the door body 30 is set to: is at a certain degree, the abutting portion 210 abuts against the second inclined portion 120, and the door body 30 can drive the abutting portion 210 to move downward under the action of gravity, so as to drive the abutting portion 210 to move to the second end of the second inclined portion 120; when the opening angle of the door body 30 is at a certain degree, the abutting portion 210 abuts against the second end of the second inclined portion 120, and the door seal 5 located on the rear wall of the door body 30 fits against the front end surface of the box body 10, so as to effectively seal the connection between the door body 30 and the box body 10.

[0175] It should be noted that when the user pushes the door body 30 to rotate and close the door body 30, during the process that the abutting portion 210 abuts against the first inclined portion 110 and the second inclined portion 120 in sequence, the door body 30 will have a process of jumping upward first and then downward, resulting in 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 distances between the second end of the first inclined portion 110, the first end of the second inclined portion 120 and the surface of the fixing member 100 to change the moving distance of the door body 30 in the vertical direction.

[0176] 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 inclined portion 110 and the second inclined portion 120, so as to change the moving time of the door body 30 in the vertical direction. For example, when the length of the first inclined portion 110 increases, the moving time of the door body 30 moving upward in the vertical direction increases, and the difference between the second set angle and the first set angle increases. When the length of the second inclined portion 120 increases, the moving time of the door body 30 moving downward in the vertical direction increases, and the difference between the third set angle and the second set angle increases; and when the distances between the second end of the first inclined portion 110, the first end of the second inclined portion 120 and the surface of the fixing member 100 remain unchanged, the inclination angle of the first inclined portion 110 decreases, and the inclination angle of the second inclined portion 120 increases.

[0177] Moreover, the position of the first set angle of the door body 30 can be changed by adjusting the position of the first end of the first inclined portion 110, 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 second inclined portion 120, so as to determine the moving time of the door body 30 in the vertical direction.

[0178] For example, the length of the first inclined portion 110 can be equal to the length of the second inclined portion 120, so that the inclination angle of the first inclined portion 110 is equal to the inclination angle of the second inclined portion 120; or, the length of the first inclined portion 110 can be greater than the length of the second inclined portion 120, so that the inclination angle of the first inclined portion 110 is less than the inclination angle of the second inclined portion 120; or, the length of the first inclined portion 110 can be less than the length of the second inclined portion 120, and the inclination length of the first inclined portion 110 is greater than the inclination angle of the second inclined portion 120.

[0179] Exemplarily, when the opening angle of the door body 30 is set to: degrees, the abutting portion 210 abuts against the first inclined portion 110. When the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the first set angle, and the abutting portion 210 abuts against the first end of the first inclined portion 110. 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 210 abuts against the second end of the first inclined portion 110; when the opening angle of the door body 30 is set to: degrees, the abutting portion 210 abuts against the second inclined portion 120. 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, and the abutting portion 210 abuts against the second end of the second inclined portion 120. When the opening angle of the door body 30 When at a certain degree, the abutting portion 210 can move from the second end of the first inclined portion 110 towards the first end of the second inclined portion 120.

[0180] In some embodiments, the positions of the first inclined portion 110 and the second inclined portion 120 can also be determined according to the relative positions of the first hinge axis 41 and the first track groove 50, and the relative positions of the second hinge axis 42 and the second track groove 60, so as to improve the stability during the movement of the first hinge axis 41 and the second hinge axis 42.

[0181] Exemplarily, the central track line of the first track groove 50 is denoted as the first track line S, and the first track line S is defined by the shape of the first track groove 50. The first track line S includes a straight track segment and a curved track segment that are smoothly connected in a transitional manner. The straight track segment extends towards the direction close to the door side wall 32, and the curved track segment is located on the side of the straight track segment close to the door side wall 32 and bulges towards the direction close to the second side edge N.

[0182] The second track groove 60 can be set as a curved groove. One end of the second track groove 60 is farther from the door rear wall 33 and farther from the door side wall 32 than the other end of the second track groove 60. The second track groove 60 bulges towards the direction close to the door rear wall 33. The central track line of the second track groove 60 is denoted as the second track line K. The second track line K is defined by the shape of the second track groove 60, and the second track line K is curved and bulges towards the direction close to the door rear wall 33.

[0183] Among them, the first track line S includes a first positioning point P far from the door side wall 32 1 and a sixth positioning point P close to the door side wall 32 6 . The first track line S first extends along a straight line towards the direction close to the door side wall 32 from the first positioning point P 1 and then extends along a curve to the sixth positioning point P 6 ; the second track line K includes a first guiding point Q far from the door side wall 32 1 and a sixth guiding point Q close to the door side wall 32 6 . The sixth guiding point Q 6 is located on the side of the first guiding point Q 1 far from the door front wall 31 and close to the door side wall 32. The second track line K extends along a curve from the first guiding point Q 1 towards the direction far from the door front wall 31 and close to the door side wall 32 to the sixth guiding point Q 6 .

[0184] When the door body 30 is in the closed state (i.e., When the door body 30 is in the closed state, the central axis of the first hinge axis (positioning central axis P) is located at the first positioning point P1 of the first track line S, and the central axis of the second hinge axis (guiding central axis Q) is located at the first guiding point Q1 of the second track line K. That is, when the door body 30 is in the closed state, the first hinge axis is located on the side of the second hinge axis close to the door side wall 32 and close to the door rear wall 33.

[0185] During the process of the door body 30 rotating and closing, when the door body 30 rotates from the maximum angle G max to the closed state, the first hinge axis moves relative to the first track groove 50 and always moves away from the door side wall 32, and the second hinge axis moves relative to the second track groove 60 and always moves away from the door side wall 32. That is, during the entire process of the door body 30 closing, the first hinge axis and the second hinge axis both maintain one-way movement without reversing, so that the force directions of the first hinge axis and the second hinge axis always remain the same, which is beneficial to improving the feel of opening and closing the door body 30, enhancing the user experience, and extending the service life of the first track groove 50 and the second track groove 60. In addition, during the process of the door body 30 closing, the first hinge axis and the second hinge axis keep moving, making the acceleration change of the door body 30 smaller, which is beneficial to improving the smoothness of the door body 30 when it is opened.

[0186] 0° < G 1 <G 2 <G 3 <G 4 <G max . The first positioning point P 1 , the second positioning point P 2 , the third positioning point P 3 , the fourth positioning point P 4 , the fifth positioning point P 5 , the sixth positioning point P 6 are sequentially distributed along the first track line S. And the second positioning point P 2 , the third positioning point P 3 , the fourth positioning point P 4 are distributed along the straight track segment in the direction close to the door side wall 3232, and the fourth positioning point P 4 , the fifth positioning point P 5 , the sixth positioning point P 6 are distributed along the curved track segment in the direction close to the door side wall 3232 and close to the door front wall 3131.

[0187] Exemplarily, the first guiding point Q 1 , the second guiding point Q 2 , the third guiding point Q 3 , the fourth guiding point Q 4 , the fifth guiding point Q 5 , the sixth guiding point Q 6Are distributed along the first trajectory line S in sequence. And the second guiding point Q 2 , the third guiding point Q 3 , the fourth guiding point Q 4 , the fifth guiding point Q 5 Are distributed along the second trajectory line K in the direction of approaching the door side wall 32 and away from the door front wall 31. The fifth guiding point Q 5 , the sixth guiding point Q 6 Are distributed along the second trajectory line K in the direction of approaching the door side wall 32 and approaching the door front wall 31. It should be noted that G 1 , G 2 , G 3 , G 4 , G max Can be sequentially recorded as the first angle, the second angle, the third angle, the fourth angle, and the maximum angle.

[0188] Embodiment 1

[0189] Referring to Figures 23 - 26 , it can be understood that, in combination with the door body 30 rotating to a specific angle (including the first angle G 1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 , and the maximum angle G max ), the positions of the two hinge axes relative to the two track grooves are known. The matching relationship between the first hinge axis and the first track groove 50, and the second hinge axis and the second track groove 60 includes the following situations.

[0190] In the first stage, the door body 30 rotates from G max to G 4 ;

[0191] In the first stage, the first hinge axis moves linearly along the linear groove section of the first track groove 50. The average moving speed of the first hinge axis relative to the linear groove section of the first track groove 50 is denoted as the first average speed ν 1 ;

[0192] For example, the positioning center axis P moves from the sixth positioning point P 6 along the curved track section of the first trajectory line S in the direction of moving away from the door side wall 32 and away from the door front wall 31. And the guiding center axis Q moves from the sixth guiding point Q 6 along the second trajectory line K in the direction of moving away from the door side wall 32 and away from the door front wall 31. For example, the positioning center axis P moves from the sixth positioning point P 6 along the curved track section of the first trajectory line S to the fifth positioning point P 5 ; the guiding center axis Q moves from the sixth guiding point Q 6 along the second trajectory line K to the fifth guiding point Q 5 .

[0193] When the door body 30 rotates from G max to the closed state of G 4 in the process, the first hinge axis moves along the curved track segment of the first track line S in a direction away from the door side wall 32 and away from the front wall 31 of the door. For each unit angle of rotation of the door body 30 to the closed state, the speed at which the first hinge axis moves in the direction away from the front wall 31 of the door is approximately equal to the speed at which it moves in the direction away from the door side wall 32 (for example, the difference between the two speeds can be less than 1 mm).

[0194] Moreover, in the first stage, the abutting portion 210 always abuts against the surface of the fixed member 100 facing the movable member 200, and the abutting portion 210 is located on the surface of the first inclined portion 110 away from the second inclined portion 120, and the abutting portion 210 moves towards the first end of the first inclined portion 110.

[0195] In the second stage, the door body 30 rotates from G 4 to the closed state of G 3 ;

[0196] In the second stage, the first hinge axis moves along the curved groove segment of the first track groove 50 in a curved motion. The average motion speed of the first hinge axis relative to the curved groove segment of the first track groove 50 is denoted as the second average speed ν 2 , and the relationship between the first average speed and the second average speed satisfies: ν 1 > ν 2 ;

[0197] When the door body 30 rotates from G 4 through G 3 to the closed state of G 2 , the positioning center axis P moves from the fifth positioning point P 5 along the curved track segment of the first track line S in a direction close to the door side wall 32 and close to the front wall 31 of the door, and the guiding center axis Q moves from the fifth guiding point Q 5 along the second track line K in a direction away from the door side wall 32 and close to the front wall 31 of the door.

[0198] For example, the positioning center axis P moves from the fifth positioning point P 5 along the curved track segment of the first track line S through the fourth positioning point P 4 to the third positioning point P 3 ; the guiding center axis Q moves from the fifth guiding point Q 5 along the second track line K through the fourth guiding point Q 4 to the third guiding point Q 3 .

[0199] Moreover, in the second stage, the fourth angle G 4 can be reused to form the first set angle, and the fifth positioning point P 5Set as the first inflection point U of the first track groove 50 and the fifth guiding point Q 5 Set as the second inflection point V of the second track groove 60. For example, when the positioning central axis P of the first hinge shaft 41 moves to the fifth positioning point P 5 , and the guiding central axis Q of the second hinge shaft 42 moves to the fifth guiding point Q 5 , the abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110;

[0200] The second angle G 2 Can be reused to form the second set angle. For example, when the positioning central axis P of the first hinge shaft 41 moves to the third positioning point P 3 , and the guiding central axis Q of the second hinge shaft 42 moves to the third guiding point Q 3 , the abutting portion 210 can move from the first end of the first inclined portion 110 to the second end of the first inclined portion 110;

[0201] When the door body 30 is at the third angle G 3 , the abutting portion 210 abuts against the first inclined portion 110 and slides upward obliquely, and the abutting portion 210 is located between the first end and the second end of the first inclined portion 110. When the door body 30 is rotated from G 4 through G 3 to the closed state of G 2 , the abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110, thereby driving the door body 30 to move upward in the vertical direction.

[0202] In the third stage, the door body 30 is rotated from G 2 to the closed state;

[0203] In the third stage, the first hinge shaft makes a curvilinear motion along the curved groove section of the first track groove 50, and the positioning central axis P moves from the third positioning point P 3 along the straight track section of the first track line S in a direction away from the door side wall 32; the guiding central axis Q moves from the third guiding point Q 3 along the second track line K in a direction away from the door side wall 32 and away from the front door wall 31.

[0204] For example, the positioning central axis P moves from the third positioning point P 3 along the straight track section of the first track line S through the second positioning point P 2 to the first positioning point P 1 ; the guiding central axis Q moves from the third guiding point Q 3 along the second track line K through the second guiding point Q 2 to the first guiding point Q 1 .

[0205] In the third stage, with the first track groove 50 and the second track groove 60 as references, when the door body 30 rotates from G 2 to the closed state during the rotation closing process, the axis line segment PQ rotates counterclockwise from P 3 Q 3 and moves inward successively to P 2 Q 2 、P 1 Q 1 (i.e., P 3 Q 3 →P 2 Q 2 →P 1 Q 1 ).

[0206] Since the first track groove 50 and the second track groove 60 are arranged on the movable part 200 of the door body 30, the axis line segment PQ represents the movement of the fixed part 100 arranged on the box body 10. Therefore, if the door body 30 is taken as a static reference, during the process of the door body 30 rotating from G 2 to the closed state, the box body 10 rotates counterclockwise relative to the door body 30 and moves inward a certain distance.

[0207] According to the relativity of motion, when the box body 10 is taken as a static reference, during the process of the door body 30 rotating from G 2 to the closed state, the door body 30 rotates clockwise relative to the box body 10 and moves outward a certain distance.

[0208] Moreover, in the third stage, the first angle G 1 can be reused to form the third set angle. For example, during the process of the door body 30 closing from G 2 to G 1 , the positioning center axis P of the first hinge shaft 41 moves towards the second positioning point P 2 , and the guiding center axis Q of the second hinge shaft 42 moves towards the second guiding point Q 2 . The door body 30 can move from the second end of the first inclined part 110 to the first end of the second inclined part 120 and can move along the first end of the second inclined part 120 towards the second end of the second inclined part 120, thereby driving the door body 30 to move downward in the vertical direction. When the positioning center axis P of the first hinge shaft 41 moves to the second positioning point P 2 , and the guiding center axis Q of the second hinge shaft 42 moves to the second guiding point Q 2 , the abutting part 210 moves to the second end of the second inclined part 120;

[0209] During the process of the door body 30 from G 1During the process of closing to the closed state, the positioning central axis P of the first hinge shaft 41 moves towards the first positioning point P 1 and the guiding central axis Q of the second hinge shaft 42 moves towards the first guiding point Q 1 During this movement, the abutting portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixing member 100 facing the movable member 200, and the abutting portion 210 moves to the side of the second inclined portion 120 away from the first inclined portion 110, and the door seal 5 on the rear wall of the door body 30 moves towards the front end face of the box body 10, so that the door body 30 can move to the closed state

[0210] And, when the door body 30 is closed from G 1 to the closed state, the door seal 5 can gradually contact the front end face of the box body 10, thereby gradually increasing the bonding force between the door body 30 and the box body 10. And under the action of the gravity of the door body 30, the door body 30 can drive the abutting portion 210 to move downward along the vertical direction on the surface of the second inclined portion 120, so that the door body 30 can be closed from G 1 to the closed state more smoothly, and further reduce the possibility of a gap appearing between the door body 30 and the box body 10

[0211] In some embodiments, in the third stage, the first hinge shaft moves linearly along the straight groove section of the first track groove 50, and the distance that the door body 30 moves inward per unit angle of rotation and closing is ξ 1 In the first stage and the second stage, the first hinge shaft moves curvilinearly along the curved groove section of the first track groove 50, and the distance that the door body 30 moves inward per unit angle of rotation and closing is ξ 2 For example, ξ 1 > ξ 2

[0212] In the third stage, the first hinge shaft quickly moves in a direction away from the door side wall 32, so that the door seal 5 quickly fits with the front end face of the box body 10, thereby connecting the door body 30 and the box body 10 by using the door seal 5, and reducing the possibility of a gap appearing between the door body 30 and the box body 10. On the other hand, the arrangement of the track grooves with the above track characteristics is more compact and the movement efficiency is higher

[0213] Exemplarily, the essence of the inward movement of the door body 30 of the refrigerator is that the first track groove 50 moves outward. Therefore, in the first stage, the lateral movement efficiency of the third track groove is high, and the outward movement speed of the door body 30 increases, which is beneficial to reducing the difficulty of the design and arrangement of the track groove

[0214] It should be noted that the first set angle, the second set angle and the third set angle of the door body 30 can also be adjusted according to the actual situation. For example, the first set angle of the door body 30 can also be set at the fourth angle G​4 and the second angle G 2 between them, the positioning central axis P of the first hinge shaft 41 moves to the fifth positioning point P 5 and the third positioning point P 3 between them, and the guiding central axis Q of the second hinge shaft 42 moves to the fifth guiding point Q 5 and the third guiding point Q 3 When between them, the door body 30 is at the first set angle.

[0215] Exemplarily, when the door body 30 is at the fourth angle G 4 at this time, the positioning central axis P moves to the fifth positioning point P 5 and the guiding central axis Q moves to the fifth guiding point Q 5 , the fifth positioning point P 5 is set as the inflection point of the first track groove 50, and the fifth guiding point Q 5 is set as the inflection point of the second track groove 60, so that the moment on the door body 30 is the largest when it is at the fourth angle G 4 By setting the first set angle between the fourth angle G 4 and the second angle G 2 between them, the door body 30 can move vertically at a relatively gentle position, so as to improve the stability during the movement of the door body 30.

[0216] It is easy to understand that when the angles of the door body 30 corresponding to the inflection points of the first track groove 50 and the second track groove 60 are different. For example, when the door body 30 is at the fourth angle G 4 at this time, the positioning central axis P moves to the inflection point of the first track groove 50, and when the door body 30 is at the third angle G 3 at this time, the guiding central axis Q moves to the inflection point of the second track groove 60. The first set angle of the door body 30 can be set between the fourth angle G 4 and the third angle G 3 between them, or the first set angle of the door body 30 can be set between the third angle G 3 and the second angle G 2 between them, so as to ensure that the first set angle of the door body 30 is less than the angle corresponding to at least one of the inflection points of the first track groove 50 and the second track groove 60.

[0217] Exemplarily, the first track groove 50 has a first inflection point U, and the second track groove 60 has a second inflection point V. During the process of the door body 30 rotating and closing, the positioning central axis P moves from the sixth positioning point P 6 towards the first positioning point P 1 while moving, the guiding central axis Q moves from the sixth guiding point Q 6 towards the first guiding point Q 1Moving; when the door body 30 rotates and closes to the first set angle, the positioning central axis P can be located between the first inflection point U and the first positioning point P 1 and / or, the guiding central axis Q can be located between the second inflection point V and the second guiding point Q 1 to improve the stability of the rotation and closing process of the door body 30.

[0218] Embodiment 2

[0219] When the angles of the door body 30 corresponding to the inflection points of the first track groove 50 and the second track groove 60 are different, when the door body 30 rotates and closes to the first set angle, the positioning central axis P passes through the first inflection point U, and when the guiding central axis Q has not moved to the second inflection point V, in combination with the door body 30 rotating to a specific angle (including the first angle G 1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 and the maximum angle G max ), the positions of the two hinge axes relative to the two track grooves are known, and the fitting relationships between the first hinge axis and the first track groove 50 and between the second hinge axis and the second track groove 60 include the following situations.

[0220] In the first stage, the door body 30 rotates and closes from G max to G 4 ;

[0221] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average moving speed of the first hinge axis relative to the straight groove section of the first track groove 50 is denoted as the first average speed ν 1 ;

[0222] For example, the positioning central axis P moves away from the door side wall 32 and away from the door front wall 31 along the curved track section of the first track line S from the sixth positioning point P 6 , and the guiding central axis Q moves away from the door side wall 32 and away from the door front wall 31 along the second track line K from the sixth guiding point Q 6 . For example, the positioning central axis P moves along the curved track section of the first track line S from the sixth positioning point P 6 to the fifth positioning point P 5 ; the guiding central axis Q moves along the second track line K from the sixth guiding point Q 6 to the fifth guiding point Q 5 .

[0223] When the door body 30 rotates and closes from G max to G 4During the process, the first hinge axis moves along the curved track segment of the first track line S in a direction away from the door side wall 32 and away from the front wall 31 of the door. For each unit angle of rotation and closing of the door body 30, the rate at which the first hinge axis moves in the direction away from the front wall 31 of the door is approximately equal to the rate at which it moves in the direction away from the door side wall 32 (for example, the difference between the two rates can be less than 1 mm).

[0224] Moreover, in the first stage, the abutting portion 210 always abuts against the surface of the fixed member 100 facing the movable member 200, and the abutting portion 210 is located on the surface of the first inclined portion 110 away from the second inclined portion 120, and the abutting portion 210 moves towards the first end of the first inclined portion 110.

[0225] Moreover, the first inflection point U of the first track groove 50 can be set at the sixth positioning point P 6 and the fifth positioning point P 5 therebetween; in the first stage, the first hinge axis moves linearly along the straight track segment of the first track groove 50, the positioning central axis P passes through the first inflection point U of the first track groove 50, and the second hinge axis 42 moves within the second track groove 60.

[0226] In the second stage, the door body 30 rotates from G 4 to G 3 ;

[0227] In the second stage, the first hinge axis moves curvilinearly along the curved track segment of the first track groove 50, and the average moving speed of the first hinge axis relative to the curved track segment of the first track groove 50 is denoted as the second average speed ν 2 , and the relationship between the first average speed and the second average speed satisfies: ν 1 > ν 2 ;

[0228] The door body 30 passes from G 4 through G 3 to G 2 for closing, the positioning central axis P moves from the fifth positioning point P 5 along the curved track segment of the first track line S in a direction close to the door side wall 32 and close to the front wall 31 of the door, and the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K in a direction away from the door side wall 32 and close to the front wall 31 of the door.

[0229] For example, the positioning central axis P moves from the fifth positioning point P 5 along the curved track segment of the first track line S through the fourth positioning point P 4 to the third positioning point P 3 ; the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K through the fourth guiding point Q 4 to the third guiding point Q3 .

[0230] Moreover, in the second stage, the first set angle can be set between the fourth angle G 4 and the third angle G 3 ; the second inflection point V of the second track groove 60 can be set between the fourth guide point Q 4 and the third guide point Q 3 ; for example, when the door body 30 is at the fourth angle G 4 , the positioning central axis P passes through the inflection point of the first track groove 50, and then, the positioning central axis P passes through the fifth positioning point P 5 and moves towards the fourth positioning point P 4 , and the guide central axis Q of the second hinge shaft 42 passes through the fifth guide point Q 5 and moves to the fourth guide point Q 4 , and the abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110 and move along the first end of the first inclined portion 110 towards the second end of the first inclined portion 110;

[0231] The second angle G 2 can be reused to form the second set angle. For example, when the positioning central axis P of the first hinge shaft 41 moves to the third positioning point P 3 , and the guide central axis Q of the second hinge shaft 42 moves to the third guide point Q 3 , the abutting portion 210 can move from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; and, during the process of the guide central axis Q moving from the fourth guide point Q 4 towards the third guide point Q 3 , the guide central axis Q passes through the second inflection point V.

[0232] When the door body 30 is at the third angle G 3 , the guide central axis Q moves to the inflection point of the second track groove 60 (i.e., the second inflection point V), the abutting portion 210 abuts against the first inclined portion 110 and slides upwardly in an inclined manner, and the abutting portion 210 is located between the first end and the second end of the first inclined portion 110. When the door body 30 is closed from G 4 through G 3 to G 2 , the abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110, thereby driving the door body 30 to move upward in the vertical direction.

[0233] In the third stage, the door body 30 rotates from G 2 to the closed state;

[0234] In the third stage, the first hinge axis moves along the curved groove section of the first track groove 50, and the positioning center axis P moves from the third positioning point P 3 along the straight track section of the first track line S in a direction away from the door side wall 32; the guiding center axis Q moves from the third guiding point Q 3 along the second track line K in a direction away from the door side wall 32 and away from the front door wall 31.

[0235] For example, the positioning center axis P moves from the third positioning point P 3 along the straight track section of the first track line S through the second positioning point P 2 to the first positioning point P 1 ; the guiding center axis Q moves from the third guiding point Q 3 along the second track line K through the second guiding point Q 2 to the first guiding point Q 1 .

[0236] Embodiment 3

[0237] When the angles of the door body 30 corresponding to the inflection points of the first track groove 50 and the second track groove 60 are different, when the door body 30 rotates and closes to the first set angle, the positioning center axis P does not move to the first inflection point U, and when the guiding center axis Q passes through the second inflection point V, in combination with the door body 30 rotating to a specific angle (including the first angle G 1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 and the maximum angle G max ), the positions of the two hinge axes relative to the two track grooves can be known, and the fitting relationships between the first hinge axis and the first track groove 50 and between the second hinge axis and the second track groove 60 include the following situations.

[0238] In the first stage, the door body 30 rotates and closes from G max to G 4 ;

[0239] In the first stage, the first hinge axis moves along the straight groove section of the first track groove 50 in a straight line, and the average moving speed of the first hinge axis relative to the straight groove section of the first track groove 50 is denoted as the first average speed ν 1 ;

[0240] For example, the positioning center axis P moves from the sixth positioning point P 6 along the curved track section of the first track line S in a direction away from the door side wall 32 and away from the front door wall 31, and the guiding center axis Q moves from the sixth guiding point Q 6 along the second track line K in a direction away from the door side wall 32 and away from the front door wall 31. For example, the positioning center axis P moves from the sixth positioning point P 6Move along the curved track segment of the first track line S to the fifth positioning point P 5 ; The guiding central axis Q moves from the sixth guiding point Q 6 along the second track line K to the fifth guiding point Q 5 .

[0241] During the process of the door body 30 rotating and closing from G max to G 4 , the first hinge axis moves along the curved track segment of the first track line S in a direction away from the door side wall 32 and away from the front wall 31 of the door. For each unit angle of rotation and closing of the door body 30, the rate at which the first hinge axis moves in the direction away from the front wall 31 of the door is approximately equal to the rate at which it moves in the direction away from the door side wall 32 (for example, the difference between the two rates can be less than 1 mm).

[0242] Moreover, in the first stage, the abutting portion 210 always abuts against the surface of the fixed member 100 facing the movable member 200, and the abutting portion 210 is located on the surface of the first inclined portion 110 away from the second inclined portion 120, and the abutting portion 210 moves towards the first end of the first inclined portion 110.

[0243] Furthermore, the second inflection point V of the second track groove 60 can be set between the sixth guiding point Q 6 and the fifth guiding point Q 5 ; In the first stage, the first hinge axis moves linearly along the straight track segment of the first track groove 50, the positioning central axis P does not move to the first inflection point U of the first track groove 50, the second hinge axis 42 moves within the second track groove 60, and the guiding central axis Q passes through the second inflection point V of the second track groove 60.

[0244] In the second stage, the door body 30 rotates and closes from G 4 to G 3 ;

[0245] In the second stage, the first hinge axis moves curvilinearly along the curved track segment of the first track groove 50, and the average moving speed of the first hinge axis relative to the curved track segment of the first track groove 50 is denoted as the second average speed ν 2 , and the relationship between the first average speed and the second average speed satisfies: ν 1 > ν 2 ;

[0246] The door body 30 rotates from G 4 through G 3 and closes to G 2 , the positioning central axis P moves along the curved track segment of the first track line S in a direction close to the door side wall 32 and close to the front wall 31 of the door from the fifth positioning point P 5 , and the guiding central axis Q moves from the fifth guiding point Q 5Move in a direction away from the door side wall 32 and closer to the door front wall 31 along the second track line K.

[0247] For example, the positioning central axis P is formed by the fifth positioning point P 5 The curved track segment of the first track line S passes through the fourth positioning point P 4 And moves to the third positioning point P 3 ; The guiding central axis Q is formed by the fifth guiding point Q 5 Passes through the fourth guiding point Q along the second track line K 4 And moves to the third guiding point Q 3 .

[0248] Moreover, in the second stage, the first set angle can be set between the fourth angle G 4 And the third angle G 3 The first inflection point U of the first track groove 50 can be set between the fourth positioning point P 4 And the third positioning point P 3 For example, when the door body 30 is at the fourth angle G 4 The guiding central axis Q moves to the inflection point (i.e., the second inflection point V) of the second track groove 60;

[0249] Then, the positioning central axis P passes through the fifth positioning point P 5 And moves towards the fourth positioning point P 4 The guiding central axis Q of the second hinge shaft 42 passes through the fifth guiding point Q 5 (i.e., the second inflection point V) and moves to the fourth guiding point Q 4 , The abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110 and move along the first end of the first inclined portion 110 towards the second end of the first inclined portion 110;

[0250] The second angle G 2 Can be reused to form the second set angle. For example, when the positioning central axis P of the first hinge shaft 41 moves to the third positioning point P 3 , And the guiding central axis Q of the second hinge shaft 42 moves to the third guiding point Q 3 The abutting portion 210 can move from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; Moreover, during the movement of the positioning central axis P from the fourth positioning point P 4 Towards the third positioning point P 3 The positioning central axis P passes through the first inflection point U.

[0251] When the door body 30 is at the third angle G 3When the positioning central axis P passes through the inflection point of the first track groove 50 (i.e., the first inflection point U), the abutting portion 210 can abut against the first inclined portion 110 and slide upwardly in an inclined manner, and the abutting portion 210 is located between the first end and the second end of the first inclined portion 110. When the door body 30 moves from G 4 Passes through G 3 Closes to G 2 At this time, the abutting portion 210 moves from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, thereby driving the door body 30 to move upward in the vertical direction.

[0252] In the third stage, the door body 30 rotates from G 2 To the closed state;

[0253] In the third stage, the first hinge axis moves along the curved groove section of the first track groove 50, and the positioning central axis P moves from the third positioning point P 3 Along the straight track section of the first track line S in a direction away from the door side wall 32; the guiding central axis Q moves from the third guiding point Q 3 Along the second track line K in a direction away from the door side wall 32 and away from the door front wall 31.

[0254] For example, the positioning central axis P moves from the third positioning point P 3 Along the straight track section of the first track line S through the second positioning point P 2 To the first positioning point P 1 ; the guiding central axis Q moves from the third guiding point Q 3 Along the second track line K through the second guiding point Q 2 To the first guiding point Q 1 .

[0255] Embodiment 4

[0256] When the angles of the door body 30 corresponding to the inflection points of the first track groove 50 and the second track groove 60 are the same, when the door body 30 rotates to close to the first set angle, when the positioning central axis P passes through the first inflection point U and the guiding central axis Q passes through the second inflection point V, combined with the door body 30 rotating to a specific angle (including the first angle G 1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 And the maximum angle G max ), the positions of the two hinge axes relative to the two track grooves are known, and the matching relationships between the first hinge axis and the first track groove 50 and the second hinge axis and the second track groove 60 include the following situations.

[0257] In the first stage, the door body 30 rotates from G max To G 4 ;

[0258] In the first stage, the first hinge shaft moves linearly along the linear groove section of the first track groove 50, and the average moving speed of the first hinge shaft relative to the linear groove section of the first track groove 50 is denoted as the first average speed ν 1 ;

[0259] For example, the positioning center axis P moves away from the door sidewall 32 and away from the front door wall 31 along the curved track section of the first track line S from the sixth positioning point P 6 and the guiding center axis Q moves away from the door sidewall 32 and away from the front door wall 31 along the second track line K from the sixth guiding point Q 6 . For example, the positioning center axis P moves from the sixth positioning point P 6 along the curved track section of the first track line S to the fifth positioning point P 5 ; the guiding center axis Q moves from the sixth guiding point Q 6 along the second track line K to the fifth guiding point Q 5 .

[0260] During the process of the door body 30 rotating from G max to G 4 in a closed state, the first hinge shaft moves away from the door sidewall 32 and away from the front door wall 31 along the curved track section of the first track line S. For each unit angle of rotation and closing of the door body 30, the rate at which the first hinge shaft moves away from the front door wall 31 is approximately equal to the rate at which it moves away from the door sidewall 32 (for example, the difference between the two rates can be less than 1 mm).

[0261] In the first stage, the abutting portion 210 always abuts against the surface of the fixed member 100 facing the movable member 200, and the abutting portion 210 is located on the surface of the first inclined portion 110 away from the second inclined portion 120, and the abutting portion 210 moves toward the first end of the first inclined portion 110.

[0262] Moreover, the first inflection point U of the first track groove 50 can be set between the sixth positioning point P 6 and the fifth positioning point P 5 , and the second inflection point V of the second track groove 60 can be set between the sixth guiding point Q 6 and the fifth guiding point Q 5 ; in the first stage, the first hinge shaft moves linearly along the linear groove section of the first track groove 50, the positioning center axis P passes through the first inflection point U of the first track groove 50, the second hinge shaft 42 moves within the second track groove 60, and the guiding center axis Q passes through the second inflection point V of the second track groove 60.

[0263] In the second stage, the door body 30 rotates from G 4 to G 3 ;

[0264] In the second stage, the first hinge axis moves along the curved groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the curved groove section of the first track groove 50 is denoted as the second average speed ν 2 , and the relationship between the first average speed and the second average speed satisfies: ν 1 > ν 2 ;

[0265] The door body 30 is from G 4 through G 3 closed to G 2 , the positioning central axis P moves from the fifth positioning point P 5 along the curved track section of the first track line S in the direction close to the door side wall 32 and close to the front wall 31 of the door, and the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K in the direction away from the door side wall 32 and close to the front wall 31 of the door.

[0266] For example, the positioning central axis P moves from the fifth positioning point P 5 along the curved track section of the first track line S through the fourth positioning point P 4 to the third positioning point P 3 ; the guiding central axis Q of the second hinge axis 42 moves from the fifth guiding point Q 5 along the second track line K through the fourth guiding point Q 4 to the third guiding point Q 3 .

[0267] And, in the second stage, the first set angle can be set between the fourth angle G 4 and the third angle G 3 ; for example, when the door body 30 is at the fourth angle G 4 , the positioning central axis P moves to the fifth positioning point P 5 ;

[0268] Then, the positioning central axis P passes through the fifth positioning point P 5 and moves towards the fourth positioning point P 4 , and the guiding central axis Q of the second hinge axis 42 passes through the fifth guiding point Q 5 and moves to the fourth guiding point Q 4 , the abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110 and move along the first end of the first inclined portion 110 towards the second end of the first inclined portion 110;

[0269] The second angle G 2 can be reused to form the second set angle. For example, when the positioning central axis P of the first hinge axis 41 moves to the third positioning point P 3 , and the guiding central axis Q of the second hinge axis 42 moves to the third guiding point Q3 When in this state, the abutting portion 210 can move from the first end of the first inclined portion 110 to the second end of the first inclined portion 110;

[0270] When the door body 30 is at the third angle G 3 the abutting portion 210 abuts against the first inclined portion 110 and slides upwardly in an inclined manner, and the abutting portion 210 is located between the first end of the first inclined portion 110 and the second end of the first inclined portion 110. When the door body 30 moves from G 4 through G 3 to the closed state G 2 the abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110, thereby driving the door body 30 to move upward in the vertical direction.

[0271] In the third stage, the door body 30 rotates from G 2 to the closed state;

[0272] In the third stage, the first hinge shaft moves along the curved groove section of the first track groove 50 in a curved motion, and the positioning center axis P moves from the third positioning point P 3 along the straight track section of the first track line S in a direction away from the door side wall 32; the guiding center axis Q moves from the third guiding point Q 3 along the second track line K in a direction away from the door side wall 32 and away from the front door wall 31.

[0273] For example, the positioning center axis P moves from the third positioning point P 3 along the straight track section of the first track line S through the second positioning point P 2 to the first positioning point P 1 ; the guiding center axis Q moves from the third guiding point Q 3 along the second track line K through the second guiding point Q 2 to the first guiding point Q 1 .

[0274] Embodiment 5

[0275] When the angles of the door body 30 corresponding to the inflection points of the first track groove 50 and the second track groove 60 are different, when the door body 30 rotates to the first set angle, the positioning center axis P passes through the first inflection point U, and when the guiding center axis Q moves to the second inflection point V, combined with the door body 30 rotating to a specific angle (including the first angle G 1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 and the maximum angle G max ), the positions of the two hinge shafts relative to the two track grooves are known, and the matching relationships between the first hinge shaft and the first track groove 50 and between the second hinge shaft and the second track groove 60 include the following situations.

[0276] In the first stage, the door body 30 rotates from G max to G 4 ;

[0277] In the first stage, the first hinge shaft moves linearly along the linear groove section of the first track groove 50, and the average moving speed of the first hinge shaft relative to the linear groove section of the first track groove 50 is denoted as the first average speed ν 1 ;

[0278] For example, the positioning central axis P moves away from the door side wall 32 and away from the front wall 31 of the door along the curved track section of the first track line S from the sixth positioning point P 6 , and the guiding central axis Q moves away from the door side wall 32 and away from the front wall 31 of the door along the second track line K from the sixth guiding point Q 6 . For example, the positioning central axis P moves along the curved track section of the first track line S from the sixth positioning point P 6 to the fifth positioning point P 5 ; the guiding central axis Q moves along the second track line K from the sixth guiding point Q 6 to the fifth guiding point Q 5 .

[0279] During the process of the door body 30 rotating from G max to G 4 , the first hinge shaft moves away from the door side wall 32 and away from the front wall 31 of the door along the curved track section of the first track line S. For each unit angle of rotation and closing of the door body 30, the rate at which the first hinge shaft moves away from the front wall 31 of the door is approximately equal to the rate at which it moves away from the door side wall 32 (for example, the difference between the two rates can be less than 1 mm).

[0280] Moreover, in the first stage, the abutting portion 210 always abuts against the surface of the fixing member 100 facing the movable member 200, and the abutting portion 210 is located on the surface of the first inclined portion 110 away from the second inclined portion 120, and the abutting portion 210 moves towards the first end of the first inclined portion 110.

[0281] Furthermore, the first inflection point U of the first track groove 50 can be set between the sixth positioning point P 6 and the fifth positioning point P 5 ; in the first stage, the first hinge shaft moves linearly along the linear groove section of the first track groove 50, the positioning central axis P passes through the first inflection point U of the first track groove 50, and the second hinge shaft 42 moves within the second track groove 60.

[0282] In the second stage, the door body 30 rotates from G 4 to G 3 ;

[0283] In the second stage, the first hinge shaft moves along the curved groove section of the first track groove 50, and the average moving speed of the first hinge shaft relative to the curved groove section of the first track groove 50 is denoted as the second average speed ν 2 , and the relationship between the first average speed and the second average speed satisfies: ν 1 > ν 2 ;

[0284] The door body 30 moves from G 4 through G 3 to the closed state at G 2 . The positioning central axis P moves from the fifth positioning point P 5 along the curved track section of the first track line S in the direction close to the door side wall 32 and close to the front door wall 31, and the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K in the direction away from the door side wall 32 and close to the front door wall 31.

[0285] For example, the positioning central axis P moves from the fifth positioning point P 5 along the curved track section of the first track line S through the fourth positioning point P 4 to the third positioning point P 3 ; the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K through the fourth guiding point Q 4 to the third guiding point Q 3 .

[0286] Moreover, in the second stage, the first set angle can be set at the fourth angle G 4 , and the second inflection point V of the second track groove 60 can be set at the fifth guiding point Q 5 ; for example, when the door body 30 is at the fourth angle G 4 , the positioning central axis P passes through the inflection point of the first track groove 50 (i.e., the first inflection point U), and the guiding central axis Q moves to the inflection point of the second track groove 60 (i.e., the second inflection point V);

[0287] Then, the positioning central axis P passes through the fifth positioning point P 5 and moves towards the fourth positioning point P 4 , and the guiding central axis Q of the second hinge shaft 42 passes through the fifth guiding point Q 5 and moves to the fourth guiding point Q 4 . The abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110 and move along the first end of the first inclined portion 110 towards the second end of the first inclined portion 110;

[0288] The second angle G 2can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge shaft 41 moves to the third positioning point P 3 , and the guiding center axis Q of the second hinge shaft 42 moves to the third guiding point Q 3 , the abutting portion 210 can move from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; and, when the guiding center axis Q moves from the fourth guiding point Q 4 towards the third guiding point Q 3 , the guiding center axis Q passes through the second inflection point V.

[0289] When the door body 30 is at the third angle G 3 , the abutting portion 210 abuts against the first inclined portion 110 and slides upwardly in an inclined manner, and the abutting portion 210 is located between the first end of the first inclined portion 110 and the second end of the first inclined portion 110. When the door body 30 rotates from G 4 through G 3 to the closed state G 2 , the abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110, thereby driving the door body 30 to move upward in the vertical direction.

[0290] In the third stage, the door body 30 rotates from G 2 to the closed state;

[0291] In the third stage, the first hinge shaft moves along the curved groove section of the first track groove 50 in a curved motion, and the positioning center axis P moves from the third positioning point P 3 along the straight track section of the first track line S in a direction away from the door side wall 32; the guiding center axis Q moves from the third guiding point Q 3 along the second track line K in a direction away from the door side wall 32 and away from the front door wall 31.

[0292] For example, the positioning center axis P moves from the third positioning point P 3 along the straight track section of the first track line S through the second positioning point P 2 to the first positioning point P 1 ; the guiding center axis Q moves from the third guiding point Q 3 along the second track line K through the second guiding point Q 2 to the first guiding point Q 1 .

[0293] Embodiment Six

[0294] When the angles of the door body 30 corresponding to the inflection points of the first track groove 50 and the second track groove 60 are different, when the door body 30 rotates to the first set angle, the positioning center axis P moves to the first inflection point U, and when the guiding center axis Q passes through the second inflection point V, combined with the door body 30 rotating to a specific angle (including the first angle G1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 and the maximum angle G max ), the positions of the two hinge axes relative to the two track grooves are known. The fitting relationships between the first hinge axis and the first track groove 50 and between the second hinge axis and the second track groove 60 include the following cases.

[0295] In the first stage, the door body 30 rotates from G max to the closed state at G 4 ;

[0296] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50. The average moving speed of the first hinge axis relative to the straight groove section of the first track groove 50 is denoted as the first average speed ν 1 ;

[0297] For example, the positioning center axis P moves from the sixth positioning point P 6 along the curved track section of the first track line S in a direction away from the door side wall 32 and away from the front door wall 31, and the guiding center axis Q moves from the sixth guiding point Q 6 along the second track line K in a direction away from the door side wall 32 and away from the front door wall 31. For example, the positioning center axis P moves from the sixth positioning point P 6 along the curved track section of the first track line S to the fifth positioning point P 5 ; the guiding center axis Q moves from the sixth guiding point Q 6 along the second track line K to the fifth guiding point Q 5 .

[0298] During the process of the door body 30 rotating from G max to the closed state at G 4 , the first hinge axis moves along the curved track section of the first track line S in a direction away from the door side wall 32 and away from the front door wall 31. For each unit angle of rotation and closing of the door body 30, the rate at which the first hinge axis moves in a direction away from the front door wall 31 is approximately equal to the rate at which it moves in a direction away from the door side wall 32 (for example, the difference between the two rates can be less than 1 mm).

[0299] Moreover, in the first stage, the abutting portion 210 always abuts against the surface of the fixed member 100 facing the movable member 200, and the abutting portion 210 is located on the surface of the first inclined portion 110 away from the second inclined portion 120, and the abutting portion 210 moves towards the first end of the first inclined portion 110.

[0300] Moreover, the second inflection point V of the second track groove 60 can be set between the sixth guiding point Q 6 and the fifth guiding point Q 5Between; in the first stage, the first hinge shaft moves linearly along the straight groove section of the first track groove 50, the positioning central axis P has not moved to the first inflection point U of the first track groove 50, the second hinge shaft 42 moves within the second track groove 60, and the guiding central axis Q passes through the second inflection point V of the second track groove 60.

[0301] In the second stage, the door body 30 rotates from G 4 to the closed state at G 3 ;

[0302] In the second stage, the first hinge shaft moves curvilinearly along the curved groove section of the first track groove 50, and the average moving speed of the first hinge shaft relative to the curved groove section of the first track groove 50 is denoted as the second average speed ν 2 , and the relationship between the first average speed and the second average speed satisfies: ν 1 > ν 2 ;

[0303] The door body 30 rotates from G 4 through G 3 to the closed state at G 2 , the positioning central axis P moves from the fifth positioning point P 5 along the curved track section of the first track line S in the direction close to the door side wall 32 and the door front wall 31, and the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K in the direction away from the door side wall 32 and close to the door front wall 31.

[0304] For example, the positioning central axis P moves from the fifth positioning point P 5 along the curved track section of the first track line S through the fourth positioning point P 4 to the third positioning point P 3 ; the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K through the fourth guiding point Q 4 to the third guiding point Q 3 .

[0305] And, in the second stage, the first set angle can be set at the fourth angle G 4 , the first inflection point U of the first track groove 50 can be set at the fifth positioning point P 5 ; for example, when the door body 30 is at the fourth angle G 4 , the guiding central axis Q moves to the inflection point (i.e., the second inflection point V) of the second track groove 60;

[0306] Then, the positioning central axis P passes through the fifth positioning point P 5 and moves towards the fourth positioning point P 4 , and the guiding central axis Q of the second hinge shaft 42 passes through the fifth guiding point Q 5 and moves to the fourth guiding point Q4 The abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110 and move along the first end of the first inclined portion 110 toward the second end of the first inclined portion 110;

[0307] The second angle G 2 can be reused to form a second set angle. For example, when the positioning central axis P of the first hinge shaft 41 moves to the third positioning point P 3 , and the guiding central axis Q of the second hinge shaft 42 moves to the third guiding point Q 3 , the abutting portion 210 can move from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; and, when the positioning central axis P moves from the fourth positioning point P 4 toward the third positioning point P 3 , the positioning central axis P passes through the first inflection point U.

[0308] When the door body 30 is at the third angle G 3 , the positioning central axis P passes through the inflection point of the first track groove 50 (i.e., the first inflection point U), the abutting portion 210 abuts against the first inclined portion 110 and slides upward obliquely, and the abutting portion 210 is located between the first end and the second end of the first inclined portion 110. When the door body 30 moves from G 4 through G 3 and closes to G 2 , the abutting portion 210 moves from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, thereby driving the door body 30 to move upward in the vertical direction.

[0309] In the third stage, the door body 30 rotates from G 2 to the closed state;

[0310] In the third stage, the first hinge shaft moves along the curved groove section of the first track groove 50, and the positioning central axis P moves from the third positioning point P 3 along the straight track section of the first track line S in a direction away from the door side wall 32; the guiding central axis Q moves from the third guiding point Q 3 along the second track line K in a direction away from the door side wall 32 and away from the door front wall 31.

[0311] For example, the positioning central axis P moves from the third positioning point P 3 along the straight track section of the first track line S through the second positioning point P 2 and moves to the first positioning point P 1 ; the guiding central axis Q moves from the third guiding point Q 3 along the second track line K through the second guiding point Q 2 and moves to the first guiding point Q 1 .

[0312] Embodiment Seven

[0313] When the angles of the door body 30 corresponding to the inflection points of the first track groove 50 and the second track groove 60 are different, when the door body 30 rotates and closes to the first set angle, the positioning central axis P moves to the first inflection point U, and when the guiding central axis Q does not move to the second inflection point V, combined with the door body 30 rotating to a specific angle (including the first angle G 1 、the second angle G 2 、the third angle G 3 、the fourth angle G 4 and the maximum angle G max ), the positions of the two hinge axes relative to the two track grooves are known. The fitting relationships between the first hinge axis and the first track groove 50 and between the second hinge axis and the second track groove 60 include the following situations.

[0314] In the first stage, the door body 30 rotates and closes from G max to G 4 ;

[0315] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average moving speed of the first hinge axis relative to the straight groove section of the first track groove 50 is denoted as the first average speed ν 1 ;

[0316] For example, the positioning central axis P moves from the sixth positioning point P 6 along the curved track section of the first track line S in a direction away from the door side wall 32 and away from the door front wall 31, and the guiding central axis Q moves from the sixth guiding point Q 6 along the second track line K in a direction away from the door side wall 32 and away from the door front wall 31. For example, the positioning central axis P moves from the sixth positioning point P 6 along the curved track section of the first track line S to the fifth positioning point P 5 ; the guiding central axis Q moves from the sixth guiding point Q 6 along the second track line K to the fifth guiding point Q 5 .

[0317] During the process of the door body 30 rotating and closing from G max to G 4 , the first hinge axis moves along the curved track section of the first track line S in a direction away from the door side wall 32 and away from the door front wall 31. For each unit angle of rotation and closing of the door body 30, the rate at which the first hinge axis moves in a direction away from the door front wall 31 is approximately equal to the rate at which it moves in a direction away from the door side wall 32 (for example, the difference between the two rates can be less than 1 mm).

[0318] In the first stage, the abutting portion 210 always abuts against the surface of the fixed member 100 facing the movable member 200, and the abutting portion 210 is located on the surface of the first inclined portion 110 away from the second inclined portion 120, and the abutting portion 210 moves toward the first end of the first inclined portion 110.

[0319] Moreover, in the first stage, the first hinge shaft moves linearly along the linear groove section of the first track groove 50, the positioning central axis P passes through the first inflection point U of the first track groove 50, and the second hinge shaft 42 moves within the second track groove 60.

[0320] In the second stage, the door body 30 rotates from G 4 to the closed state at G 3 ;

[0321] In the second stage, the first hinge shaft moves curvilinearly along the curved groove section of the first track groove 50, and the average moving speed of the first hinge shaft relative to the curved groove section of the first track groove 50 is denoted as the second average speed ν 2 , and the relationship between the first average speed and the second average speed satisfies: ν 1 > ν 2 ;

[0322] The door body 30 rotates from G 4 through G 3 to the closed state at G 2 , the positioning central axis P moves from the fifth positioning point P 5 along the curved track section of the first track line S in the direction close to the door side wall 32 and close to the door front wall 31, and the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K in the direction away from the door side wall 32 and close to the door front wall 31.

[0323] For example, the positioning central axis P moves from the fifth positioning point P 5 along the curved track section of the first track line S through the fourth positioning point P 4 to the third positioning point P 3 ; the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K through the fourth guiding point Q 4 to the third guiding point Q 3 .

[0324] Moreover, in the second stage, the first set angle can be set at the fourth angle G 4 , the first inflection point U of the first track groove 50 can be set at the fifth positioning point P 5 , and the second inflection point V of the second track groove 60 can be set between the fifth guiding point Q 5 and the fourth guiding point Q 4 . For example, when the door body 30 is at the fourth angle G 4When the positioning central axis P moves to the inflection point of the first track groove 50 (i.e., the first inflection point U), the guiding central axis Q does not move to the inflection point of the second track groove 60 (i.e., the second inflection point V);

[0325] Then, the positioning central axis P passes through the fifth positioning point P 5 and moves towards the fourth positioning point P 4 At the same time, the guiding central axis Q of the second hinge shaft 42 passes through the fifth guiding point Q 5 and moves to the fourth guiding point Q 4 , the guiding central axis Q passes through the second inflection point V, and the abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110 and move along the first end of the first inclined portion 110 towards the second end of the first inclined portion 110;

[0326] The second angle G 2 can be reused to form the second set angle. For example, when the positioning central axis P of the first hinge shaft 41 moves to the third positioning point P 3 , and the guiding central axis Q of the second hinge shaft 42 moves to the third guiding point Q 3 , the abutting portion 210 can move from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; and, when the guiding central axis Q moves from the fourth guiding point Q 4 towards the third guiding point Q 3 , the guiding central axis Q passes through the second inflection point V.

[0327] When the door body 30 is at the third angle G 3 , the abutting portion 210 abuts against the first inclined portion 110 and slides upward obliquely, and the abutting portion 210 is located between the first end and the second end of the first inclined portion 110. When the door body 30 is closed from G 4 through G 3 to G 2 , the abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110, thereby driving the door body 30 to move upward in the vertical direction.

[0328] In the third stage, the door body 30 rotates from G 2 to the closed state;

[0329] In the third stage, the first hinge shaft moves along the curved groove section of the first track groove 50, and the positioning central axis P moves away from the door side wall 32 along the straight track section of the first track line S from the third positioning point P 3 ; the guiding central axis Q moves away from the door side wall 32 and away from the front door wall 31 along the second track line K from the third guiding point Q 3 .

[0330] For example, the positioning central axis P is formed by the third positioning point P 3 and moves along the straight track segment of the first track line S through the second positioning point P 2 to the first positioning point P 1 ; the guiding central axis Q is formed by the third guiding point Q 3 and moves along the second track line K through the second guiding point Q 2 to the first guiding point Q 1 .

[0331] Embodiment 8

[0332] When the angles of the door body 30 corresponding to the inflection points of the first track groove 50 and the second track groove 60 are different, when the door body 30 rotates and closes to the first set angle, the positioning central axis P does not move to the first inflection point U, and when the guiding central axis Q moves to the second inflection point V, in combination with the door body 30 rotating to a specific angle (including the first angle G 1 , the second angle G 2 , the third angle G 3 , the fourth angle G 4 and the maximum angle G max ), the positions of the two hinge axes relative to the two track grooves are known, and the cooperation relationships between the first hinge axis and the first track groove 50 and between the second hinge axis and the second track groove 60 include the following cases.

[0333] In the first stage, the door body 30 rotates and closes from G max to G 4 ;

[0334] In the first stage, the first hinge axis moves linearly along the straight groove segment of the first track groove 50, and the average moving speed of the first hinge axis relative to the straight groove segment of the first track groove 50 is denoted as the first average speed ν 1 ;

[0335] For example, the positioning central axis P moves away from the door side wall 32 and away from the front door wall 31 along the curved track segment of the first track line S from the sixth positioning point P 6 , and the guiding central axis Q moves away from the door side wall 32 and away from the front door wall 31 along the second track line K from the sixth guiding point Q 6 . For example, the positioning central axis P moves from the sixth positioning point P 6 along the curved track segment of the first track line S to the fifth positioning point P 5 ; the guiding central axis Q moves from the sixth guiding point Q 6 along the second track line K to the fifth guiding point Q 5 .

[0336] When the door body 30 rotates and closes from G max to G 4During the process, the first hinge axis moves along the curved track segment of the first track line S in a direction away from the door side wall 32 and away from the front door wall 31. For each unit angle of rotation and closing of the door body 30, the speed at which the first hinge axis moves in the direction away from the front door wall 31 is approximately equal to the speed at which it moves in the direction away from the door side wall 32 (for example, the difference between the two speeds can be less than 1 mm).

[0337] In the first stage, the abutting portion 210 always abuts against the surface of the fixed member 100 facing the movable member 200, and the abutting portion 210 is located on the surface of the first inclined portion 110 away from the second inclined portion 120, and the abutting portion 210 moves towards the first end of the first inclined portion 110.

[0338] Moreover, in the first stage, the first hinge axis moves linearly along the straight groove segment of the first track groove 50, the positioning central axis P does not move to the first inflection point U of the first track groove 50, the second hinge axis 42 moves within the second track groove 60, and the guiding central axis Q passes through the second inflection point V of the second track groove 60.

[0339] In the second stage, the door body 30 rotates from G 4 to G 3 ;

[0340] In the second stage, the first hinge axis moves curvilinearly along the curved groove segment of the first track groove 50. The average moving speed of the first hinge axis relative to the curved groove segment of the first track groove 50 is denoted as the second average speed ν 2 , and the relationship between the first average speed and the second average speed satisfies: ν 1 > ν 2 ;

[0341] The door body 30 rotates from G 4 through G 3 to G 2 for closing. The positioning central axis P moves from the fifth positioning point P 5 along the curved track segment of the first track line S in a direction close to the door side wall 32 and close to the front door wall 31, and the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K in a direction away from the door side wall 32 and close to the front door wall 31.

[0342] For example, the positioning central axis P moves from the fifth positioning point P 5 along the curved track segment of the first track line S through the fourth positioning point P 4 to the third positioning point P 3 ; the guiding central axis Q moves from the fifth guiding point Q 5 along the second track line K through the fourth guiding point Q 4 to the third guiding point Q 3 .

[0343] And in the second stage, the first set angle can be set at the fourth angle G 4 , the first inflection point U of the first track groove 50 can be set at the fifth positioning point P 5 and the fourth positioning point P 4 therebetween, and the second inflection point V of the second track groove 60 can be set at the fifth guiding point Q 5 , for example, when the door body 30 is at the fourth angle G 4 , the guiding central axis Q moves to the inflection point (i.e., the second inflection point V) of the second track groove 60, and the positioning central axis P does not move to the inflection point (i.e., the first inflection point U) of the first track groove 50;

[0344] Then, the positioning central axis P passes through the fifth positioning point P 5 and moves towards the fourth positioning point P 4 , the positioning central axis P passes through the first inflection point U, and the guiding central axis Q of the second hinge shaft 42 passes through the fifth guiding point Q 5 and moves to the fourth guiding point Q 4 , the abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110 and move along the first end of the first inclined portion 110 towards the second end of the first inclined portion 110;

[0345] The second angle G 2 can be reused to form the second set angle. For example, when the positioning central axis P of the first hinge shaft 41 moves to the third positioning point P 3 , and the guiding central axis Q of the second hinge shaft 42 moves to the third guiding point Q 3 , the abutting portion 210 can move from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; and, during the process of the positioning central axis P moving from the fourth positioning point P 4 towards the third positioning point P 3 , the positioning central axis P passes through the first inflection point U.

[0346] When the door body 30 is at the third angle G 3 , the positioning central axis P passes through the inflection point (i.e., the first inflection point U) of the first track groove 50, the abutting portion 210 abuts against the first inclined portion 110 and slides obliquely upward, and the abutting portion 210 is located between the first end and the second end of the first inclined portion 110. When the door body 30 closes from G 4 through G 3 to G 2 , the abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110, thereby driving the door body 30 to move upward in the vertical direction.

[0347] In the third stage, the door body 30 is at G 2Rotate to the closed state;

[0348] In the third stage, the first hinge axis moves along the curved groove section of the first track groove 50, and the positioning center axis P moves from the third positioning point P 3 along the straight track section of the first track line S in a direction away from the door side wall 32; the guiding center axis Q moves from the third guiding point Q 3 along the second track line K in a direction away from the door side wall 32 and away from the front wall 31 of the door.

[0349] For example, the positioning center axis P moves from the third positioning point P 3 along the straight track section of the first track line S through the second positioning point P 2 to the first positioning point P 1 ; the guiding center axis Q moves from the third guiding point Q 3 along the second track line K through the second guiding point Q 2 to the first guiding point Q 1 .

[0350] It is easy to understand that taking the movement process of the positioning center axis P in the first track groove 50 as an example, where "not moved to" means that the positioning center axis P is before a certain point in the first track groove 50, "moved to" means that the positioning center axis P is at a certain point in the first track groove 50, and "passed through" means that the positioning center axis P is after a certain point in the first track groove 50.

[0351] During the process of the door body 30 rotating to the closed state, when the positioning center axis P moves to the inflection point of the first track groove 50, the guiding center axis Q moves to the inflection point of the second track groove 60, and the door body 30 is at the first set angle. For example, as described in Embodiment 1, when the door body 30 is at the fourth angle G 4 the door body 30 is at the first set angle, the positioning center axis P moves to the inflection point of the first track groove 50, and the guiding center axis Q moves to the inflection point of the second track groove 60.

[0352] Or, during the process of the door body 30 rotating to the closed state, when the positioning center axis P moves to the inflection point of the first track groove 50 and the guiding center axis Q moves to the inflection point of the second track groove 60, the door body 30 has not rotated to the first set angle. When the positioning center axis P passes through the inflection point of the first track groove 50 and the guiding center axis Q moves to the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in Embodiment 2, when the door body 30 is at the fourth angle G 4 the door body 30 has not rotated to the first set angle, the positioning center axis P moves to the inflection point of the first track groove 50, and when the door body 30 is at the third angle G 3 the guiding center axis Q moves to the inflection point of the second track groove 60;

[0353] Alternatively, 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 has not rotated to the first set angle; when the positioning central axis P moves to the inflection point of the first track groove 50 and the guiding central axis Q passes through the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in Embodiment 3, when the door body 30 is at the fourth angle G 4 the door body 30 has not rotated to the first set angle, and the guiding central axis Q moves to the inflection point of the second track groove 60. When the door body 30 is at the third angle G 3 the positioning central axis P moves to the inflection point of the first track groove 50;

[0354] Alternatively, during the process of the door body 30 rotating and closing, when the positioning central axis P moves to the inflection point of the first track groove 50 and at the same time the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 has not rotated to the first set angle; after the positioning central axis P passes through the inflection point of the first track groove 50 and the guiding central axis Q passes through the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in Embodiment 4, when the door body 30 is at the fourth angle G 4 the door body 30 has not rotated to the first set angle, the positioning central axis P passes through the inflection point of the first track groove 50, and furthermore, the guiding central axis Q passes through the inflection point of the second track groove 60.

[0355] 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 is at the first set angle. For example, as described in Embodiment 5, when the door body 30 is at the fourth angle G 4 the door body 30 is at the first set angle, the positioning central axis P passes through the inflection point of the first track groove 50, and furthermore, the guiding central axis Q moves to the inflection point of the second track groove 60.

[0356] 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 is at the first set angle. For example, as described in Embodiment 6, when the door body 30 is at the fourth angle G 4 the door body 30 is at the first set angle, the positioning central axis P moves to the inflection point of the first track groove 50, and furthermore, the guiding central axis Q passes through the inflection point of the second track groove 60.

[0357] 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 is at a first set angle. For example, as described in Embodiment Seven, when the door body 30 is at the fourth angle G 4 the door body 30 is at the first set angle, the positioning central axis P moves to the inflection point of the first track groove 50, and the guiding central axis Q does not move to the inflection point of the second track groove 60.

[0358] 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 50, the guiding central axis Q moves to the inflection point of the second track groove 60, and the door body 30 is at the first set angle. For example, as described in Embodiment Six, when the door body 30 is at the fourth angle G 4 the door body 30 is at the first set angle, the positioning central axis P does not move to the inflection point of the first track groove 50, and the guiding central axis Q moves to the inflection point of the second track groove 60.

[0359] It should be noted that when the first track groove 50 is provided with a first inflection point U and the second track groove 60 is not provided with a second inflection point V, the gravity self-closing structure is configured such that when the door body 30 rotates to the first set angle, the positioning central axis P moves to the first inflection point U, or the positioning central axis P passes through the first inflection point U.

[0360] When the second track groove 60 is provided with a second inflection point V and the first track groove 50 is not provided with a first inflection point U, the gravity self-closing structure is configured such that when the door body 30 rotates to the first set angle, the guiding central axis Q moves to the second inflection point V, or the guiding central axis Q passes through the second inflection point V.

[0361] In some embodiments, the position of the first set angle of the door body 30 can be changed by adjusting the position of the first end of the first inclined portion 110. As can be seen from Embodiment One and Embodiment Four, the first track groove 50 in Embodiment One can be set the same as the first track groove 50 in Embodiment Four, the second track groove 60 in Embodiment One can be set the same as the second track groove 60 in Embodiment Four, and the first end of the first inclined portion 110 in Embodiment Four contacts the abutting portion 210 earlier than the first end of the first inclined portion 110 in Embodiment One.

[0362] In some embodiments, the second end of the first inclined portion 110 may be directly connected to the first end of the second inclined portion 120. In a horizontal plane, the first inclined portion 110 and the second inclined portion 120 are arranged around the rotation axis of the door body 30; in a vertical plane, the first inclined portion 110 and the second inclined portion 120 enclose a triangle, and the surface of the fixing member 100, the inclined surface of the first inclined portion 110, and the inclined surface of the second inclined portion 120 together form a connected moving path, so that the bottom end of the abutting portion 210 can move along the moving path during the rotation of the door body 30 to open or close.

[0363] The inclined surfaces of the first inclined portion 110 and the second inclined portion 120 may be set to have a smooth transition, that is, an arc surface may be formed between the second end of the first inclined portion 110 and the first end of the second inclined portion 120, so that the bottom of the abutting portion 210 can move from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the arc surface, thereby making the moving process of the abutting portion 210 more convenient.

[0364] Exemplarily, when the distances from the second end of the first inclined portion 110, the first end of the second inclined portion 120 to the surface of the fixing member 100 are smaller, the sense of jerk of the user during the closing process is smaller. The distances from the second end of the first inclined portion 110, the first end of the second inclined portion 120 to the surface of the fixing member 100 may be set to be greater than or equal to 1 mm and less than or equal to 5 mm. For example, the distances from the second end of the first inclined portion 110, the first end of the second inclined portion 120 to the surface of the fixing member 100 may be set to one 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, 4.5 mm - 5 mm to reduce the sense of jerk of the user during the closing process.

[0365] The length of the abutting portion 210 may be set to be greater than or equal to 1 mm and less than or equal to 5 mm. For example, the length of the abutting portion 210 may be set to one 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, 4.5 mm - 5 mm to reduce the sense of jerk of the user during the closing process.

[0366] When the inclination angle of the first inclined portion 110 is smaller, the sense of jerk of the user during the closing process is smaller. The inclination angle of the first inclined portion 110 may be set to be less than or equal to 40 degrees. For example, the inclination angle of the first inclined portion 110 may be set to one of 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, and 40 degrees to reduce the sense of jerk of the user during the closing process.

[0367] Moreover, during the process of the door body 30 rotating and closing, when the bottom of the abutting portion 210 moves to the surface of the fixing member 100 facing the movable member 200, the distance between the second end of the first inclined portion 110, the first end of the second inclined portion 120 and the bottom of the abutting portion 210 can be set to be greater than or equal to 1 mm and less than or equal to 3 mm. For example, the distance between the second end of the first inclined portion 110, the first end of the second inclined portion 120 and the bottom of the abutting portion 210 can be set to 1 mm - 1.5 mm, 1.5 mm - 2 mm, 2 mm - 2.5 mm, 2.5 mm - 3 mm, so as to make the process of the door body rotating and closing more stable.

[0368] It is easy to understand that during the process of the door body 30 rotating and closing, the lower end of the door body 30 is spaced from the top surface of the fixing member 100. The distance between the lower end of the door body 30 and the top surface of the fixing member 100 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 100 can be set to one of 0.5 mm - 1 mm, 1 mm - 1.5 mm, 1.5 mm - 2 mm, 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 100 is, the more compact the overall structure of the gravity self-closing structure is.

[0369] Referring to Figure 36 and Figure 37 , in some embodiments, the abutting portion 210 may be provided with a connected first abutting surface 211 and a second abutting surface 212. Both the first abutting surface 211 and the second abutting surface 212 are inclined with respect to the vertical direction. When the door body 30 is in the closed state (i.e., ), the bottom of the abutting portion 210 can abut against the surface of the fixing member 100 facing the movable member 200, and the abutting portion 210 can be located on the side of the second inclined portion 120 away from the first inclined portion 110; when the door body 30 is in the open state (e.g., ), the bottom of the abutting portion 210 can abut against the surface of the fixing member 100 facing the movable member 200, and the abutting portion 210 is located on the side of the first inclined portion 110 away from the second inclined portion 120.

[0370] Among the first abutting surface 211 and the second abutting surface 212, the first abutting surface 211 is used to abut against the inclined surface of the first inclined portion 110, the second abutting surface 212 is used to abut against the inclined surface of the second inclined portion 120, and the bottom end of the first abutting surface 211 is connected to the bottom end of the second abutting surface 212.

[0371] During the process of the door body 30 rotating and opening, the bottom of the abutting portion 210 can move from the surface of the fixing member 100 to the second end of the second inclined portion 120, and the second abutting surface 212 can move along the second end of the second inclined portion 120 to the first end of the second inclined portion 120. The movable member 200 drives the door body 30 to move upward through the abutting portion 210. And the bottom of the abutting portion 210 moves from the first end of the second inclined portion 120 to the second end of the first inclined portion 110 through the arc surface, and the first abutting surface 211 can move along the second end of the first inclined portion 110 to the first end of the first inclined portion 110. The movable member 200 drives the door body 30 to move downward through the abutting portion 210, so that the abutting portion 210 can move from the first end of the first inclined portion 110 to the surface of the fixing member 100 facing the movable member 200, so that the abutting portion 210 can move from the side of the second inclined portion 120 away from the first inclined portion 110 to the side of the first inclined portion 110 away from the second inclined portion 120.

[0372] During the process of the door body 30 rotating and closing, the bottom of the abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110, and the first abutting surface 211 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110. The movable member 200 drives the door body 30 to move upward through the abutting portion 210. And the bottom of the abutting portion 210 moves from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the arc surface, and the second abutting surface 212 moves along the first end of the second inclined portion 120 to the second end of the second inclined portion 120. The movable member 200 drives the door body 30 to move downward through the abutting portion 210, so that the abutting portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixing member 100 facing the movable member 200, so that the abutting portion 210 can move from the side of the first inclined portion 110 away from the second inclined portion 120 to the side of the second inclined portion 120 away from the first inclined portion 110.

[0373] Exemplarily, in the vertical plane, the first abutting surface 211 can be arranged parallel to the inclined surface of the first inclined portion 110, and the second abutting surface 212 can be arranged parallel to the inclined surface of the second inclined portion 120 to increase the fitting area between the first abutting surface 211 and the first inclined portion 110 and the fitting area between the second abutting surface 212 and the second inclined portion 120, so as to improve the stability of the bottom end of the abutting portion 210 moving along the moving path during the process of the door body 30 rotating and closing.

[0374] When the bottom of the abutting portion 210 is located at the connection between the surface of the fixing member 100 and the first end of the first inclined portion 110, the first abutting surface 211 abuts against the first inclined portion 110. When the abutting portion 210 moves from the first end of the first inclined portion 110 towards the second end of the first inclined portion 110, the area of the first abutting surface 211 in contact with the first inclined portion 110 gradually decreases. When the abutting portion 210 moves to the second end of the first inclined portion 110, the first abutting surface 211 completely disengages from the first inclined portion 110, and the bottom of the abutting portion 210 abuts against the arc surface.

[0375] When the bottom of the abutting portion 210 moves to the first end of the second inclined portion 120 and moves from the first end of the second inclined portion 120 towards the second end of the second inclined portion 120, the area of the second abutting surface 212 in contact with the second inclined portion 120 gradually increases. When the abutting portion 210 moves to the second end of the second inclined portion 120, the contact area between the second abutting surface 212 and the second inclined portion 120 is the largest, and the bottom of the abutting portion 210 abuts against the surface of the fixing member 100 facing the movable member 200.

[0376] When the inclination angle of the first inclined portion 110 is equal to the inclination angle of the second inclined portion 120, the inclination angle of the first abutting surface 211 can be equal to the inclination angle of the second abutting surface 212; when the inclination angle of the first inclined portion 110 is less than the inclination angle of the second inclined portion 120, the inclination angle of the first abutting surface 211 can be correspondingly less than the inclination angle of the second inclined portion 120 to increase the contact area between the first abutting surface 211 and the first inclined portion 110 and the contact area between the second abutting surface 212 and the second inclined portion 120.

[0377] Exemplarily, the inclination angle of the second inclined portion 120 can also be greater than the inclination angle of the first inclined portion 110. When the door body 30 is in the closed state (i.e., at this time), the larger the inclination angle of the second inclined portion 120 is, the more difficult it is for the second abutting surface 212 to move from the first end of the second inclined portion 120 to the second end of the second inclined portion 120, and the tighter the combination between the door body 30 and the box body 10 is. Thus, the sealing performance of the door body 30 closing the access opening can be improved by adjusting the inclination angle of the second inclined portion 120.

[0378] In some embodiments, the inclined surfaces of the first inclined portion 110 and the second inclined portion 120 can both be in the same vertical plane as the movement path, that is, the inclined surfaces of the first inclined portion 110 and the second inclined portion 120 both face the vertical direction; alternatively, the inclined surfaces of the first inclined portion 110 and the second inclined portion 120 can also face the first hinge axis 41 and the second hinge axis 42. When the movable member 200 rotates relative to the fixed member 100 through the first hinge axis 41 and the second hinge axis 42, the abutting portion 210 can abut against the surfaces of the first inclined portion 110 and the second inclined portion 120 that face the first hinge axis 41 and the second hinge axis 42.

[0379] Exemplarily, on the surface of the fixed member 100 facing the movable member 200, the first inclined portion 110 and the second inclined portion 120 integrally form a convex structure. The first surface of the convex structure faces the first hinge axis 41 and the second hinge axis 42, and the second surface of the convex structure faces away from the first hinge axis 41 and the second hinge axis 42. The first surface of the convex structure forms the inclined surfaces of the connected first inclined portion 110 and the second inclined portion 120, and the first surface of the convex structure also forms an arc surface.

[0380] On the surface of the movable member 200 facing the fixed member 100, the first surface of the abutting portion 210 faces the first track groove 50 and the second track groove 60, and the second surface of the abutting portion 210 faces away from the first track groove 50 and the second track groove 60. The second surface of the abutting portion 210 forms the connected first abutting surface 211 and the second abutting surface 212; when the movable member 200 rotates relative to the fixed member 100 through the first hinge axis 41 and the second hinge axis 42, the abutting portion 210 is disposed on the first surface of the convex structure.

[0381] Refer to Figures 36 - 38 , in some embodiments, the abutting portion 210 can be provided with a contact member 213. The contact member 213 can be set as a ball or a roller, etc., so as to reduce the frictional force between the abutting portion 210 and the first inclined portion 110, and between the abutting portion 210 and the second inclined portion 120 through the contact member 213, making the process of the door body 30 moving in the vertical direction smoother.

[0382] Exemplarily, the number of the contact members 213 can be set to one or more. When the number of the contact members 213 is set to one, the contact member 213 can be disposed at one of the first abutting surface 211, the second abutting surface 212 and other positions of the abutting portion 210; alternatively, the number of the contact members 213 can also be set to multiple. The multiple contact members 213 can be distributed at different positions of the abutting portion 210, and the multiple contact members 213 can be used to form at least one of the first abutting surface 211 and the second abutting surface 212.

[0383] For example, the number of the contact members 213 can be set to one. The contact member 213 is set as a roller, and the roller can be disposed on the abutting portion 210. The rotation axis of the roller can be parallel to the inclined surfaces of the first inclined portion 110 and the second inclined portion 120. A first abutting surface 211 is formed by a first part of the circumferential surface of the roller, a bottom portion of the abutting portion 210 is formed by a second part of the circumferential surface of the roller, and a second abutting surface 212 is formed by a third part of the circumferential surface of the roller.

[0384] Exemplarily, the abutting portion 210 is disposed in the receiving groove. The receiving groove accommodates part of the roller, and at least part of the roller protrudes from the receiving groove so that at least part of the circumferential surface of the roller is exposed. The part of the circumferential surface located outside the receiving groove is used to form the connected first abutting surface 211, the bottom portion of the abutting portion 210, and the second abutting surface 212.

[0385] During the process of the door body 30 rotating and closing, the second part of the circumferential surface of the roller can move from the surface of the fixing member 100 to the first end of the first inclined portion 110. The first part of the circumferential surface of the roller rolls and contacts the inclined surface of the first inclined portion 110, and the remaining part of the first abutting surface 211 slides and contacts the inclined surface of the first inclined portion 110, so that the abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110. Then, the third part of the circumferential surface of the roller rolls and contacts the inclined surface of the second inclined portion 120, and the remaining part of the second abutting surface 212 slides and contacts the inclined surface of the second inclined portion 120, so that the abutting portion 210 moves along the first end of the second inclined portion 120 to the second end of the second inclined portion 120, thereby being able to reduce the frictional force between the abutting portion 210 and the fixing member 100 through the contact member 213.

[0386] Alternatively, when the number of the contact members 213 is also set to be multiple, the first part of the multiple contact members 213 can be arranged along a direction parallel to the inclined surface of the first inclined portion 110, and the first part of the contact members 213 can be used to form the first abutting surface 211 of the abutting portion 210. The first part of the contact members 213 abuts against the inclined surface of the first inclined portion 110 to reduce the frictional force between the abutting portion 210 and the first inclined portion 110 when the door body 30 moves upward.

[0387] The second part of the multiple contact members 213 can be arranged along a direction parallel to the inclined surface of the second inclined portion 120, and the second part of the contact members 213 can be used to form the second abutting surface 212 of the abutting portion 210. The second part of the contact members 213 abuts against the inclined surface of the second inclined portion 120 to reduce the frictional force between the abutting portion 210 and the second inclined portion 120 when the door body 30 moves downward.

[0388] It is easy to understand that during the process of the door body 30 rotating and closing, the abutting portion 210 is in rolling contact with the inclined surface of the first inclined portion 110 through the first part of the contact member 213 and is in rolling contact with the inclined surface of the second inclined portion 120 through the second part of the contact member 213, so that the abutting portion 210 can be in rolling contact with the first inclined portion 110 and the second inclined portion 120, thereby reducing the frictional force between the abutting portion 210 and the first inclined portion 110 and the second inclined portion 120 when the door body 30 moves in the vertical direction.

[0389] Exemplarily, the number of the contact members 213 is set to be multiple. The contact members 213 can be set as balls. A plurality of balls are all installed on the abutting portion 210, and at least a part of each ball protrudes from the abutting portion 210. The part of the ball protruding from the abutting portion 210 is used to form at least one of the first abutting surface 211 and the second abutting surface 212. For example, the first part of the balls is used to form the first abutting surface 211, and the second part of the balls is used to form the second abutting surface 212.

[0390] The abutting portion 210 can be provided with a first installation groove. The first installation groove can extend along a direction parallel to the first abutting surface 211. The first part of the balls is accommodated in the first installation groove, and at least a part of the balls located in the first installation groove protrudes from the first installation groove, and the part of the ball protruding from the first installation groove is used to form the first abutting surface 211.

[0391] The abutting portion 210 can be provided with a second installation groove. The second installation groove can extend along a direction parallel to the second abutting surface 212. The second part of the balls is accommodated in the second installation groove, and at least a part of the balls located in the second installation groove protrudes from the second installation groove, and the part of the ball protruding from the second installation groove is used to form the second abutting surface 212.

[0392] Exemplarily, the number of the contact members 213 is set to be multiple. The contact members 213 can be set as rollers. The rotation axis of the first part of the rollers extends perpendicular to the extending direction of the inclined surface of the first inclined portion 110. The peripheral surface of the first part of the rollers is used to form the first abutting surface 211; the rotation axis of the second part of the rollers extends perpendicular to the extending direction of the inclined surface of the second inclined portion 120. The rotation axis of the second part of the rollers can be arranged parallel to the rotation axis of the first part of the rollers. The peripheral surface of the second part of the rollers is used to form the second abutting surface 212.

[0393] It should be noted that during the process of the door body 30 rotating and closing, during the process of the door body 30 rotating from the maximum angle G max to the closed state, the relative position of the abutting portion 210 can be set to the position at the bottom of the abutting portion 210. For example, when the door body 30 is in the closed state (that is When the door body 30 is in the initial position, the bottom of the abutting portion 210 abuts against the surface of the fixing member 100 facing the movable member 200; when the door body 30 is at the first set angle, the bottom of the abutting portion 210 abuts against the first end of the first inclined portion 110, and the first abutting surface 211 fits against the inclined surface of the first inclined portion 110; when the door body 30 is at the second set angle, the bottom of the abutting portion 210 abuts against the arc surface (i.e., the second end of the first inclined portion 110 and the first end of the second inclined portion 120), the first abutting surface 211 disengages from the first inclined portion 110, and the second abutting surface 212 disengages from the second inclined portion 120; when the door body 30 is at the third set angle, the bottom of the abutting portion 210 abuts against the second end of the second inclined portion 120, and the second abutting surface 212 fits against the inclined surface of the second inclined portion 120.

[0394] Referring to Figure 39 , in some embodiments, the abutting portion 210 can be configured as a columnar abutting portion 210. The first end of the columnar abutting portion 210 is connected to the surface of the movable member 200 facing the fixing member 100. The columnar abutting portion 210 extends in the vertical direction. The second end of the columnar abutting portion 210 forms the bottom of the abutting portion 210. The second end of the columnar abutting portion 210 is used to abut against the surface of the fixing member 100 facing the movable member 200, the first abutting portion 210, and the second abutting portion 210, so that the movable member 200 drives the door body 30 to move in the vertical direction through the columnar abutting portion 210.

[0395] Exemplarily, the door body 30 can be reused to form the movable member 200, that is, the columnar abutting portion 210 can be provided at the lower end of the door body 30, and both the first track groove 50 and the second track groove 60 are provided at the lower end of the door body 30, so that the structure of the gravity self-closing structure is simpler.

[0396] The columnar abutting portion 210 can be integrally provided on the door body 30, or the columnar abutting portion 210 can also be detachably provided at the lower end of the door body 30. For example, the first end of the columnar abutting portion 210 can be provided with a thread, so that the columnar abutting portion 210 can be threadedly connected to the lower end of the door body 30, and the second end of the columnar abutting portion 210 extends downward, so that the disassembly and assembly process of the columnar abutting portion 210 is more convenient.

[0397] The columnar abutting portion 210 can also be relatively fixed to the lower end of the door body 30 by means of snap connection or the like. When assembling the columnar abutting portion 210 to form the gravity self-closing structure, the first end of the columnar abutting portion 210 can be inserted into the lower end of the door body 30, so that the columnar abutting portion 210 is connected to the door body 30, thereby making the assembly process of the gravity self-closing structure more convenient.

[0398] During the process of the door body 30 rotating and closing, the second end of the columnar abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110. The second end of the columnar abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110, and the movable member 200 drives the door body 30 to move upward through the columnar abutting portion 210. And the second end of the columnar abutting portion 210 moves from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the arc surface. The second end of the columnar abutting portion 210 moves along the first end of the second inclined portion 120 to the second end of the second inclined portion 120, and the movable member 200 drives the door body 30 to move downward through the columnar abutting portion 210, so that the second end of the columnar abutting portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixing member 100 facing the movable member 200, so that the columnar abutting portion 210 can move from the side of the first inclined portion 110 away from the second inclined portion 120 to the side of the second inclined portion 120 away from the first inclined portion 110.

[0399] Exemplarily, the box body 10 can be reused to form the fixing member 100. For example, the hinge assembly located at the lower end of the door body 30 can be reused to form the fixing member 100. The hinge assembly can be provided with a hinge plate 40. The surface of the hinge plate 40 facing the movable member 200 is provided with a first hinge shaft 41, a second hinge shaft 42 and a convex structure. The convex structure forms the first inclined portion 110 and the second inclined portion 120, so as to realize the formation process of the fixing member 100 through the hinge plate 40, thereby making the structure of the gravity self-closing structure simpler.

[0400] Wherein, both the first hinge shaft 41 and the second hinge shaft 42 can be relatively fixed to the hinge plate 40 by means of threads or the like. The first hinge shaft 41 is provided with a first threaded section, and the first hinge shaft 41 is threadedly connected to the hinge plate 40 through the first threaded section. The second hinge shaft 42 is provided with a second threaded section, and the second hinge shaft 42 is threadedly connected to the hinge plate 40 through the second threaded section, so as to make the process of connecting the first hinge shaft 41 and the second hinge shaft 42 to the hinge plate 40 more convenient.

[0401] The convex structure can be integrally formed on the hinge plate 40, or the convex structure can also be relatively fixed to the hinge plate 40 by means of clamping or plugging or the like. The surface of the convex structure facing away from the hinge plate 40 forms the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120. The surface of the convex structure facing the hinge plate 40 can be provided with positioning posts, and the hinge plate 40 is correspondingly provided with positioning grooves. The positioning posts are inserted into the positioning grooves to play a certain positioning role in the installation position of the convex structure, so that the installation process of the convex structure is more convenient.

[0402] It is easy to understand that the lower end of the door body 30 is reused to form the movable member 200, and the hinge assembly of the box body 10 is reused to form the fixed member 100, so as to make the assembly process of the gravity self-closing structure more convenient.

[0403] In some embodiments, the second end of the columnar abutting portion 210 may be set as an arc-shaped abutting end, and the arc-shaped abutting end may 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 may be perpendicular to the extending direction of the inclined surface of the first inclined portion 110, so that the circular abutting end always abuts against the inclined surface of the first inclined portion 110 or the inclined surface of the second inclined portion 120 through the arc surface.

[0404] Alternatively, when the circular abutting end is provided with a hemispherical surface, the hemispherical surface protrudes towards the movable member 200, and the center of the sphere of the hemispherical surface is located on the extending direction of the columnar abutting portion 210, so that the circular abutting end always abuts against the inclined surface of the first inclined portion 110 or the inclined surface of the second inclined portion 120 through the arc surface.

[0405] The columnar abutting portion 210 can abut against the inclined surfaces of the first inclined portion 110 and the second inclined portion 120 through the cylindrical circumferential surface, so as to increase the contact area between the columnar abutting portion 210 and the inclined surfaces of the first inclined portion 110 and the second inclined portion 120, making the process of the columnar abutting portion 210 driving the door body 30 to move in the vertical direction more stable.

[0406] It should be noted that during the process of the door body 30 rotating and closing, when the door body 30 rotates from the maximum angle G max to the closed state, the relative position of the columnar abutting portion 210 can be set as the second end of the columnar abutting portion 210. For example, when the door body 30 is in the closed state (i.e., ), the second end of the columnar abutting portion 210 abuts against the surface of the fixed member 100 facing the movable member 200; when the door body 30 is at the first set angle, the second end of the columnar abutting portion 210 abuts against the first end of the first inclined portion 110; when the door body 30 is at the second set angle, the second end of the columnar abutting portion 210 abuts against the arc surface (i.e., the second end of the first inclined portion 110 and the first end of the second inclined portion 120); when the door body 30 is at the third set angle, the second end of the columnar abutting portion 210 abuts against the second end of the second inclined portion 120.

[0407] Refer to Figure 40 , in some embodiments, the second end of the columnar abutting portion 210 may be provided with a rolling member 214, and the rolling member 214 may be set as a ball or a roller, etc., so as to reduce the friction between the columnar abutting portion 210 and the first inclined portion 110, and between the columnar abutting portion 210 and the second inclined portion 120 through the rolling member 214, making the process of the door body 30 moving in the vertical direction more smooth.

[0408] Exemplarily, the rolling member 214 can be set as a ball; the columnar abutting portion 210 is provided with a third mounting groove, the third mounting groove is located on the end surface of the second end of the columnar abutting portion 210, a part of the ball protrudes out of the third mounting groove, and the part of the ball protruding out of the third mounting groove forms the bottom of the columnar abutting portion 210, and the part of the ball protruding out of the third mounting groove is used to abut against the fixing member 100, the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120, so as to reduce the frictional force between the columnar abutting portion 210 and the fixing member 100.

[0409] Alternatively, the rolling member 214 can be set as a roller, the rotation axis of the roller can be parallel to the inclined surfaces of the first inclined portion 110 and the second inclined portion 120, and the bottom end of the circumferential surface of the roller forms the bottom end of the columnar abutting portion 210, and the circumferential surface of the roller is used to abut against the inclined surfaces of the first inclined portion 110 and the second inclined portion 120, so as to reduce the frictional force between the columnar abutting portion 210 and the fixing member 100.

[0410] It is easy to understand that during the process that the abutting portion 210 moves from the second end of the second inclined portion 120 to the surface of the fixing member 100 facing the movable member 200 through the rolling member 214, the abutting portion 210 can quickly move on the inclined surface of the second inclined portion 120 under the action of the rolling member 214, thereby reducing the possibility that the abutting portion 210 stays on the surface of the second inclined portion 120.

[0411] Refer to Figure 41 , in some embodiments, the abutting portion 210 can be set as a roller-type abutting portion 210, the roller-type abutting portion 210 is rotatably arranged on the surface of the movable member 200 facing the fixing member 100, and the circumferential surface of the roller-type abutting portion 210 is used to abut against the inclined surfaces of the first inclined portion 110 and the second inclined surface, the bottom end of the circumferential surface of the roller-type abutting portion 210 forms the bottom of the abutting portion 210, and the rotation axis of the roller-type abutting portion 210 can be parallel to the inclined surfaces of the first inclined portion 110 and the second inclined portion 120.

[0412] Exemplarily, the surface of the movable member 200 facing the fixing member 100 can be provided with a mounting bracket, the mounting bracket is provided with a mounting hole, and the mounting hole is used for passing through the rotation axis of the roller-type abutting portion 210, so that the roller-type abutting portion 210 can rotate relative to the movable member 200 through the rotation axis and the mounting bracket.

[0413] During the process of the door body 30 rotating and closing, the bottom end of the roller-type abutting portion 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110, and the bottom end of the roller-type abutting portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110. The movable member 200 drives the door body 30 to move upward through the roller-type abutting portion 210; and the bottom end of the roller-type abutting portion 210 moves from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the arc surface, and the bottom end of the roller-type abutting portion 210 moves along the first end of the second inclined portion 120 to the second end of the second inclined portion 120. The movable member 200 drives the door body 30 to move downward through the roller-type abutting portion 210, so that the roller-type abutting portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixing member 100 facing the movable member 200, so that the roller-type abutting portion 210 can move from the side of the first inclined portion 110 away from the second inclined portion 120 to the side of the second inclined portion 120 away from the first inclined portion 110.

[0414] Moreover, during the process of the roller-type abutting portion 210 moving from the second end of the second inclined portion 120 to the surface of the fixing member 100 facing the movable member 200, the roller-type abutting portion 210 can move quickly on the inclined surface of the second inclined portion 120, thereby reducing the possibility of the roller-type abutting portion 210 staying on the surface of the second inclined portion 120.

[0415] A first arc portion can be provided between the surface of the fixing member 100 facing the movable member 200 and the first inclined portion 110, so that the process of the roller-type abutting portion 210 moving from the surface of the fixing member 100 to the first inclined portion 110 is more convenient, and the curvature of the first arc portion can be less than or equal to the curvature of the roller-type abutting portion 210, so that the roller-type abutting portion 210 can move from the surface of the fixing member 100 facing the movable member 200 to the first inclined portion 110 through the first arc portion, thereby making the process of the door body 30 moving upward in the vertical direction smoother.

[0416] An included angle portion can be provided between the surface of the fixing member 100 facing the movable member 200 and the second inclined portion 120, or a second arc portion can be provided between the surface of the fixing member 100 facing the movable member 200 and the second inclined portion 120, and the curvature of the second arc portion can be greater than the curvature of the roller-type abutting portion 210. When the roller-type abutting portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixing member 100 facing the movable member 200, the roller-type abutting portion 210 cannot move to the second inclined portion 120 through the included angle portion or the second arc portion, thereby increasing the difficulty of the roller-type abutting portion 210 moving to the second inclined portion 120 and further reducing the possibility of a gap being generated between the door body 30 and the box body 10.

[0417] It should be noted that during the process of the door body 30 rotating and closing, when the door body 30 rotates from the maximum angle G max to the closed state, the relative position of the roller-type abutting portion 210 can be set to the bottom end of the circumferential surface of the roller-type abutting portion 210. For example, when the door body 30 is in the closed state (i.e., at this time), the bottom end of the circumferential surface of the roller-type abutting portion 210 abuts against the surface of the fixing member 100 facing the movable member 200; when the door body 30 is at the first set angle, the bottom end of the circumferential surface of the roller-type abutting portion 210 abuts against the first end of the first inclined portion 110; when the door body 30 is at the second set angle, the bottom end of the circumferential surface of the roller-type abutting portion 210 abuts against the arc surface (i.e., the second end of the first inclined portion 110 and the first end of the second inclined portion 120); when the door body 30 is at the third set angle, the bottom end of the circumferential surface of the roller-type abutting portion 210 abuts against the second end of the second inclined portion 120.

[0418] It should be noted that the second end of the first inclined portion 110 can be directly connected to the first end of the second inclined portion 120, or the second end of the first inclined portion 110 can also be connected to the first end of the second inclined portion 120 through a transition structure 130, so that the abutting portion 210 can move from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the transition structure 130. The surface of the transition structure 130 facing the movable member 200 can be flush with the second end of the first inclined portion 110 and the first end of the second inclined portion 120, so that the abutting portion 210 can abut more stably against the surface of the transition structure 130 facing the movable member 200.

[0419] In some embodiments, when the abutting portion 210 forms a first inclined surface and a second inclined surface, the abutting portion 210 is set as a columnar abutting portion 210, the abutting portion 210 is set as a roller-type abutting portion 210, or when the abutting portion 210 is set in other forms, the implementation manners of the first inclined portion 110 and the second inclined portion 120 are as follows:

[0420] The second end of the first inclined portion 110 can be directly connected to the first end of the second inclined portion 120, or the second end of the first inclined portion 110 can also be connected to the first end of the second inclined portion 120 through a transition structure 130. For example, the transition structure 130 can form an arc surface that protrudes towards the movable member 200. The first end of the arc surface is connected to the second end of the first inclined portion 110, and the second end of the arc surface is connected to the first end of the second inclined portion 120, so that the second end of the first inclined portion 110 can be connected to the first end of the second inclined portion 120 through the arc surface, thereby making the process of the abutting portion 210 moving from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 smoother.

[0421] Exemplarily, the transition structure 130 can be integrally provided on the first inclined portion 110 and the second inclined portion 120. For example, the first inclined portion 110, the transition structure 130, and the second inclined portion 120 are connected in sequence to form a convex structure.

[0422] The transition structure 130 can also be formed with a transition plane, which is flush with the second end of the first inclined portion 110 and the first end of the second inclined portion 120. The first end of the transition plane is connected to the second end of the first inclined portion 110, and the second end of the transition plane is connected to the first end of the second inclined portion 120, so that the abutting portion 210 moves from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the transition plane.

[0423] The length of the transition plane can be adjusted according to the positions of the inflection points of the first track groove 50 and the second track groove 60. For example, when the bottom of the abutting portion 210 abuts on the transition plane, the positioning central axis P can move to the inflection point of the first track groove 50, or the guiding central axis Q moves to the inflection point of the second track groove 60. By providing a transition plane between the second end of the first inclined portion 110 and the first end of the second inclined portion 120, the movement process of the abutting portion 210 can be made more stable, so that it can pass through the first inflection point U or the second inflection point V more stably.

[0424] Exemplarily, the first set angle of the door body 30 is set at the fourth angle G 4 and the third angle G 3 When the door body 30 is at the fourth angle G 4 , the positioning central axis P moves to the inflection point of the first track groove 50. When the door body 30 is at the third angle G 3 , the guiding central axis Q moves to the inflection point of the second track groove 60, and the bottom of the abutting portion 210 can abut on the transition plane, so that the abutting portion 210 can pass through the inflection point of the second track groove 60 stably.

[0425] Specifically, it is set that when the door body 30 is at the fourth angle G 4 , the positioning central axis P moves to the inflection point of the first track groove 50, and the bottom of the abutting portion 210 moves to the first end of the first inclined portion 110; when the door body 30 rotates from G 4 to G 3 and closes, the bottom of the abutting portion 210 can move from the first end of the first inclined portion 110 through the second end of the first inclined portion 110 to the transition plane; when the door body 30 is at the third angle G 3 , the guiding central axis Q moves to the inflection point of the second track groove 60, and the bottom of the abutting portion 210 moves toward the first end of the second inclined portion 120 on the transition plane, so that the movement process of the abutting portion 210 is made more stable by providing a transition plane.

[0426] Reference Figure 42 - Referring to FIG. 6, in some embodiments, the transition structure 130 may include a support body 131 and a transition member 132 disposed at the top of the support body 131. At least a portion of the transition member 132 extends out of the support body 131 toward the movable member 200. The transition member 132 may be provided as a ball or a roller, etc. The transition member 132 is disposed between the second end of the first inclined portion 110 and the first end of the second inclined portion 120. The top end of the transition member 132 may be flush with the second end of the first inclined portion 110 and the first end of the second inclined portion 120, so that the abutting portion 210 moves from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the transition member 132.

[0427] Exemplarily, the transition member 132 may be provided as a ball, and the ball is embedded in the top of the support body 131, and at least a portion of the ball extends out of the support body 131. The portion of the ball extending out of the support body 131 can be used to abut against the abutting portion 210, so that the abutting portion 210 can move from the first end of the first inclined portion 110 to the first end of the second inclined portion 120 through the ball.

[0428] The transition member 132 may also be provided as a roller, and the rotation axis of the roller may be parallel to the inclined surfaces of the first inclined portion 110 and the second inclined portion 120, and the top end of the circumferential surface of the roller is used to abut against the abutting portion 210, so that the abutting portion 210 can move from the first end of the first inclined portion 110 to the first end of the second inclined portion 120 through the roller.

[0429] It is easy to understand that the number of the transition members 132 can be set to one or more. When the number of the transition members 132 is set to multiple, multiple transition members 132 can form at least one row of transition members 132. The first end of the row of transition members 132 is connected to the second end of the first inclined portion 110, and the second end of the row of transition members 132 is connected to the first end of the second inclined portion 120. Each row of transition members 132 includes several transition members 132, and the number of the rows of transition members 132 can be set to several. The arrangement direction of several rows of transition members 132 is perpendicular to the row direction of the rows of transition members 132.

[0430] Exemplarily, the number of the transition members 132 is set to multiple, and multiple transition members 132 form several rows of transition members 132. In several rows of transition members 132, each row of transition members 132 may include balls, or each row of transition members 132 may include rollers; or, in several rows of transition members 132, at least one row of transition members 132 includes balls, and at least one row of transition members 132 includes rollers.

[0431] In some embodiments, the transition structure 130 may include a support body 131 and a transition member 132 disposed at the top end of the support body 131. The number of the transition members 132 is set to one. The transition member 132 may be set as a ball or a roller, etc. At least a part of the transition member 132 protrudes from the support body 131. The part of the transition member 132 protruding from the support body 131 can be used to abut against the abutting portion 210, and the top end of the transition member 132 is higher than the second end of the first inclined portion 110 and the first end of the second inclined portion 120. At least a part of the transition member 132 is reused to form the inclined surface of the first inclined portion 110, and at least a part of the transition member 132 is reused to form the inclined surface of the second inclined portion 120.

[0432] Exemplarily, when the abutting portion 210 moves from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the transition member 132, the abutting portion 210 continues to move upward from the second end of the first inclined portion 110 through the surface of the transition member 132 to the top end of the transition member 132, and then moves downward from the top end of the transition member 132 through the surface of the transition member 132 to the first end of the second inclined portion 120.

[0433] The transition member 132 can be set as a ball, and the ball is embedded in the top end of the support body 131, and at least a part of the ball protrudes from the support body 131. The part of the ball protruding from the support body 131 can be used to abut against the abutting portion 210, so that the abutting portion 210 can move from the first end of the first inclined portion 110 to the first end of the second inclined portion 120 through the ball.

[0434] The transition member 132 can also be set as a roller. The rotation axis of the roller can be parallel to the inclined surfaces of the first inclined portion 110 and the second inclined portion 120, and the top end of the circumferential surface of the roller is used to abut against the abutting portion 210, so that the abutting portion 210 can move from the first end of the first inclined portion 110 to the first end of the second inclined portion 120 through the roller.

[0435] In some embodiments, the first surface of the convex structure faces the first hinge axis 41 and the second hinge axis 42, the second surface of the convex structure faces away from the first hinge axis 41 and the second hinge axis 42, and the first surface of the convex structure forms the inclined surfaces of the connected first inclined portion 110 and the second inclined portion 120; the second surface of the abutting portion 210 forms the connected first abutting surface 211 and the second abutting surface 212; when the movable member 200 rotates relative to the fixed member 100 through the first hinge axis 41 and the second hinge axis 42, the abutting portion 210 is disposed on the first surface of the convex structure.

[0436] Exemplarily, the transition structure 130 has an arc surface located on the first surface of the convex structure. The arc surface faces the first hinge axis 41 and the second hinge axis 42. The arc surface of the transition structure 130 connects the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120. The arc surface can be set as a cylindrical arc surface, and the central axis of the cylindrical arc surface is inclined.

[0437] Alternatively, the transition structure 130 can include a support body 131 and a transition member 132 provided at the top end of the support body 131. At least a part of the transition member 132 protrudes from the support body 131 toward the movable member 200. The transition member 132 can be set as a ball or a roller, etc. The transition member 132 is provided between the second end of the first inclined portion 110 and the first end of the second inclined portion 120. The top end of the transition member 132 can be flush with the second end of the first inclined portion 110 and the first end of the second inclined portion 120, so that the abutting portion 210 moves from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 through the transition member 132.

[0438] The transition member 132 can be set as a roller. The rotation axis of the roller can be parallel to the inclined surfaces of the first inclined portion 110 and the second inclined portion 120, and the rotation axis of the roller is inclined. The rotation axis of the roller forms the central axis of the cylindrical arc surface. The partial peripheral surface of the roller protruding from the support body 131 is used to abut against the abutting portion 210. The partial peripheral surface of the roller protruding from the support body 131 forms a cylindrical arc surface, so that the abutting portion 210 can move from the first end of the first inclined portion 110 to the first end of the second inclined portion 120 through the roller.

[0439] In some embodiments, at least one of the first inclined portion 110 and the second inclined portion 120 can be provided with a moving member. The moving member can be set as a ball or a roller, etc., so as to reduce the frictional force between the abutting portion 210 and the first inclined portion 110, and between the abutting portion 210 and the second inclined portion 120 through the moving member, making the process of the door body 30 moving in the vertical direction smoother.

[0440] Exemplarily, the number of the moving members can be set to one or more. When the number of the moving members is set to one, the contact member 213 can be provided on the first inclined portion 110 or the second inclined portion 120; alternatively, the number of the moving members can also be set to multiple, and the multiple moving members can be used to form at least one of the inclined surfaces of the first inclined portion 110 and the second inclined portion 120.

[0441] When the number of moving members is set to be plural on the first inclined portion 110, the plural moving members can be arranged in a direction parallel to the inclined surface of the first inclined portion 110, and the plural moving members can be reused to form the inclined surface of the first inclined portion 110, so as to reduce the frictional force between the abutting portion 210 and the first inclined portion 110 when the door body 30 moves upward.

[0442] When the number of moving members is set to be plural on the second inclined portion 120, the plural moving members can be arranged in a direction parallel to the inclined surface of the second inclined portion 120, and the plural moving members can be reused to form the inclined surface of the second inclined portion 120, so as to reduce the frictional force between the abutting portion 210 and the second inclined portion 120 when the door body 30 moves downward.

[0443] On the first inclined portion 110 and / or the second inclined portion 120, when the number of moving members is set to be plural, the plural moving members can 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 can be set to be several. The arrangement direction of the several rows of moving members is perpendicular to the row direction of the transition members 132.

[0444] Exemplarily, on the first inclined portion 110 and / or the second inclined portion 120, the number of transition members 132 is set to be plural. The plural moving members form several rows of moving members. In the several rows of moving members, each row of moving members can include balls, or each row of moving members can include rollers; or, in the several rows of moving members, at least one row of moving members includes balls and at least one row of moving members includes rollers.

[0445] Referring to Figures 47 - 48 , in some embodiments, the surface of the fixing member 100 facing the movable member 200 may further include a guiding structure 160. The guiding structure 160 can be correspondingly arranged on the moving path of the abutting portion 210 relative to the fixing member 100, so as to play a certain guiding role in the moving process of the abutting portion 210 through the guiding structure 160 and reduce the possibility of the abutting portion 210 deviating during the moving process.

[0446] Exemplarily, the guiding structure 160 can be set as a groove-type guiding structure 160. The groove-type guiding structure 160 can include a first part and a second part arranged at intervals. The first part of the groove-type guiding structure 160 is arranged on the side of the first inclined portion 110 away from the second inclined portion 120, and the second part of the groove-type guiding structure 160 is arranged on the side of the second inclined portion 120 away from the first inclined portion 110, so that during the process of the door body 30 rotating and closing, the abutting portion 210 can sequentially pass through the first part of the groove-type guiding structure 160, the first inclined portion 110, the second inclined portion 120 and the second part of the groove-type guiding structure 160.

[0447] The shape of the groove - type guiding structure 160 can be adjusted according to the bottom shape of the abutting part 210. For example, when the abutting part 210 is set as a column - type abutting part 210 and the bottom of the column - type abutting part 210 is arc - shaped, the cross - sectional shape of the groove - type guiding structure 160 can be correspondingly set as arc - shaped. When the bottom of the column - type abutting part 210 is cylindrical, the cross - sectional shape of the groove - type guiding structure 160 can be correspondingly set as square, so as to play a certain guiding role for the column - type abutting part 210 through the groove - type guiding structure 160.

[0448] Alternatively, the groove - type guiding structure 160 can also be used to abut against the abutting part 210 having a first abutting surface 211 and a second abutting surface 212, and the groove - type guiding structure 160 can be used to play a certain guiding role for the bottom of the abutting part 210 having the first abutting surface 211 and the second abutting surface 212.

[0449] The groove - type guiding structure 160 can also be provided with structures such as rollers or balls. The number of rollers and the number of balls can both be set to be multiple, and the multiple rollers or multiple balls can be arranged along the extending direction of the groove - type guiding structure 160, so that the bottom of the abutting part 210 can roll - contact the groove - type guiding structure 160 through the multiple rollers or multiple balls, thereby reducing the friction between the abutting part 210 and the groove - type guiding structure 160.

[0450] Exemplarily, the guiding structure 160 can also be set as a convex - type guiding structure 160. The convex - type guiding structure 160 can include a first part and a second part arranged at intervals. The first part of the convex - type guiding structure 160 is arranged on the side of the first inclined part 110 away from the second inclined part 120, and the second part of the convex - type guiding structure 160 is arranged on the side of the second inclined part 120 away from the first inclined part 110, so that during the process of the door body 30 rotating and closing, the abutting part 210 can sequentially pass through the first part of the convex - type guiding structure 160, the first inclined part 110, the second inclined part 120, and the second part of the convex - type guiding structure 160.

[0451] The convex - type guiding structure 160 includes two cooperating guiding strips. The two guiding strips are arranged at intervals, and the interval between the two guiding strips is used for the abutting part 210 to pass through. The surface of the fixing part 100 facing the moving part 200 and the surfaces of the two guiding strips facing each other form a guiding groove. Among them, the surface of the fixing part 100 facing the moving part 200 forms the bottom surface of the guiding groove, and the surfaces of the two guiding strips facing each other form the side wall surfaces of the guiding groove.

[0452] The shape of the guiding groove can be adjusted according to the shape of the bottom of the abutting portion 210. For example, when the abutting portion 210 is set as a columnar abutting portion 210 and the bottom of the columnar abutting portion 210 is arc-shaped, the cross-sectional shape of the guiding groove can be correspondingly set as arc-shaped. When the bottom of the columnar abutting portion 210 is cylindrical, the cross-sectional shape of the guiding groove can be correspondingly set as square, so as to play a certain guiding role for the columnar abutting portion 210 through the guiding groove.

[0453] Alternatively, the guiding groove can also be used to abut against the abutting portion 210 having a first abutting surface 211 and a second abutting surface 212, and the guiding groove can be used to play a certain guiding role for the bottom of the abutting portion 210 having the first abutting surface 211 and the second abutting surface 212.

[0454] Structures such as rollers or balls can also be provided on the bottom surface of the guiding groove. The number of rollers and the number of balls can both be set to multiple, and the multiple rollers or multiple balls can be arranged along the extending direction of the guiding groove, so that the bottom of the abutting portion 210 can roll and contact the guiding groove through the multiple rollers or multiple balls, thereby reducing the friction between the abutting portion 210 and the guiding groove.

[0455] Exemplarily, the guiding structure 160 can also be set as a hidden guiding structure 160. A moving groove is provided on the surface of the fixing member 100 facing the moving member 200. A first inclined portion 110 and a second inclined portion 120 can be provided in the moving groove. The first inclined portion 110 and the second inclined portion 120 divide the moving groove into a first part and a second part arranged at intervals. The first part of the moving groove is provided on the side of the first inclined portion 110 away from the second inclined portion 120, and the second part of the moving groove is provided on the side of the second inclined portion 120 away from the first inclined portion 110. And the first part of the moving groove forms the first part of the hidden guiding structure 160, and the second part of the moving groove forms the second part of the hidden guiding structure 160.

[0456] The second end of the first inclined portion 110 and the first end of the second inclined portion 120 can be flush with the surface of the fixing member 100 facing the moving member 200. Alternatively, the second end of the first inclined portion 110 and the first end of the second inclined portion 120 can also protrude from the surface of the fixing member 100 facing the moving member 200.

[0457] The shape of the moving groove can be adjusted according to the shape of the bottom of the abutting portion 210. For example, when the abutting portion 210 is set as a columnar abutting portion 210 and the bottom of the columnar abutting portion 210 is arc-shaped, the cross-sectional shape of the moving groove can be correspondingly set as arc-shaped. When the bottom of the columnar abutting portion 210 is cylindrical, the cross-sectional shape of the moving groove can be correspondingly set as square, so as to play a certain guiding role for the columnar abutting portion 210 through the moving groove.

[0458] Alternatively, the moving groove can also be used to abut against an abutting portion 210 having a first abutting surface 211 and a second abutting surface 212, and the moving groove can be used to guide the bottom of the abutting portion 210 having the first abutting surface 211 and the second abutting surface 212 to a certain extent.

[0459] Rollers or balls and other structures can also be provided on the bottom surface of the moving groove. The number of rollers and the number of balls can both be set to be multiple, and the multiple rollers or multiple balls can be arranged along the extending direction of the moving groove, so that the bottom of the abutting portion 210 can roll and contact the moving groove through the multiple rollers or multiple balls, thereby reducing the friction between the abutting portion 210 and the moving groove.

[0460] Refer to Figure 49 , in some embodiments, a foot pad 43 is provided on the surface of the hinge plate 40 facing away from the first hinge shaft 41 and the second hinge shaft 42. The hinge plate 40 is supported by the foot pad 43, so that the weight of the door body 30 can be transmitted to the ground through the foot pad 43, thereby reducing the force on the hinge plate 40 and reducing the possibility of the hinge plate 40 being bent or broken.

[0461] The hinge plate 40 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 43, so as to drive the box body 10 to move through the rotating surface, thereby making the moving process of the box body 10 more convenient.

[0462] In some embodiments, along the extending direction of the first hinge shaft 41 and the second hinge shaft 42, the orthographic projection area of the first inclined portion 110 and the second inclined portion 120 on the surface of the fixing member 100 facing the moving member 200 can be adjusted according to the magnitudes of the first set angle, the second set angle, and the third set angle.

[0463] Exemplarily, when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set as the first set angle. When the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set as the second set angle; when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set as the third set angle.

[0464] At this time, on the surface of the fixing member 100 facing the moving member 200, the central angle corresponding to between the first end of the first inclined portion 110 and the second end of the second inclined portion 120 is set to 20 degrees. That is, when the abutting portion 210 moves between the first end of the first inclined portion 110 and the second end of the second inclined portion 120, the rotation angle of the door body 30 is 20 degrees.

[0465] Exemplarily, when the opening angle of the door body 30 When the temperature is [specific temperature], the opening angle of the door body 30 is set to the first set angle. When the opening angle of the door body 30 is [specific angle], the opening angle of the door body 30 is set to the second set angle; when the opening angle of the door body 30 is [specific angle], the opening angle of the door body 30 is set to the third set angle.

[0466] At this time, on the surface of the fixed member 100 facing the movable member 200, the central angle corresponding to between the first end of the first inclined portion 110 and the second end of the second inclined portion 120 is set to 37 degrees. That is, when the abutting portion 210 moves between the first end of the first inclined portion 110 and the second end of the second inclined portion 120, the rotation angle of the door body 30 is 37 degrees.

[0467] It should be noted that on the surface of the fixed member 100 facing the movable member 200, the central angle corresponding to between the first end of the first inclined portion 110 and the second end of the second inclined portion 120 can be set to be greater than or equal to 10 degrees and less than or equal to 45 degrees. For example, the central angle corresponding to between the first end of the first inclined portion 110 and the second end of the second inclined portion 120 can be set to one of 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, and 45 degrees.

[0468] In some embodiments, the fixed member 100 can be relatively fixedly arranged on the box body 10. For example, the fixed member 100 can be directly connected to the box body 10, or the fixed member 100 can also be connected to the box body 10 through a hinge assembly located at the lower end of the door body 30.

[0469] Exemplarily, the fixed member 100 can be set in the form of a plate - type fixed member 100 or a column - type fixed member 100, etc. The first surface of the fixed member 100 can face the box body 10, or the fixed member 100 can also face the hinge plate 40 of the hinge assembly. The second surface of the fixed member 100 faces the lower end of the door body 30, and the second surface of the fixed member 100 is connected to the first hinge shaft 41 and the second hinge shaft 42.

[0470] The fixed member 100 can be provided with at least one connecting member 140 so that the fixed member 100 is relatively fixed to the box body 10 through the connecting member 140. For example, the fixed member 100 can be fixed to the hinge plate 40 of the hinge assembly through the connecting member 140.

[0471] The connecting member 140 can be set as a connecting column. The connecting column can be relatively fixedly arranged on the hinge plate 40. The first end of the connecting column is connected to the hinge plate 40, and the second end of the connecting column extends towards the movable member 200. And the fixed member 100 is provided with a movable opening, and the connecting column passes through the movable opening so that the fixed member 100 can be relatively movably arranged on the hinge plate 40 along the extending direction of the connecting column, thereby enabling the fixation of the fixed member 100 and the hinge plate 40 through the connecting column.

[0472] The connecting member 140 can also be configured as structures such as fixing bolts and fixing pins. Alternatively, the connecting member 140 can also be configured as a clamping joint structure or the like, so that the fixing member 100 can be detachably connected to the hinge plate 40 by means of clamping or the like.

[0473] The number of the connecting members 140 can be set to one or more. When the number of the connecting members 140 is set to multiple, the multiple connecting members 140 can be evenly distributed on the fixing member 100, and the extending directions of the multiple connecting members 140 are arranged in parallel with each other, so that the process of the fixing member 100 moving along the extending direction of the connecting member 140 is more stable.

[0474] Exemplarily, the first hinge shaft 41 and the second hinge shaft 42 can also be arranged on the hinge plate 40. The extending directions of the first hinge shaft 41 and the second hinge shaft 42 are both arranged in parallel with the extending direction of the connecting member 140. And the fixing member 100 can be provided with two through holes, and the two through holes are respectively used for passing through the first hinge shaft 41 and the second hinge shaft 42, so that one ends of the first hinge shaft 41 and the second hinge shaft 42 departing from the hinge plate 40 can pass through the fixing member 100 and extend towards the movable member 200, and the fixing member 100 can move along the extending direction of the first connecting member 140 through the two through holes.

[0475] When the fixing member 100 is relatively fixed to the box body 10, the fixing member 100 can be moved in the direction close to the hinge plate 40, so that the connecting column passes through the movable opening and is relatively fixed to the hinge plate 40. The first hinge shaft 41 and the second hinge shaft 42 can pass through the through holes. The first surface of the fixing member 100 faces the hinge plate 40, thereby relatively fixing the fixing member 100 to the box body 10.

[0476] Exemplarily, the fixing member 100 can also be provided with an adjusting member 150. The first end of the adjusting member 150 can be connected to the fixing member 100, the second end of the adjusting member 150 is connected to the hinge plate 40, and the second end of the adjusting member 150 can be telescopically arranged along the extending direction of the connecting column, so as to adjust the distance between the fixing member 100 and the hinge plate 40 through the adjusting member 150.

[0477] It is easy to understand that the movable member 200 is relatively fixed to the door body 30. When the distance between the fixing member 100 and the hinge plate 40 is adjusted by the adjusting member 150, since the distance between the movable member 200 and the fixing member 100 remains relatively fixed, the distance between the movable member 200 and the door body 30 and the hinge plate 40 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 100 and the hinge plate 40 through the adjusting member 150.

[0478] The adjusting member 150 can be set as an adjusting bolt. The first end of the adjusting bolt can be rotatably connected to the fixing member 100. The adjusting bolt can be threadedly connected to the hinge plate 40, and the second end of the adjusting bolt can protrude from the surface of the hinge plate 40 away from the fixing member 100. When it is necessary to adjust the distance between the fixing member 100 and the hinge plate 40, the adjusting bolt can be rotated to screw the threaded section of the adjusting bolt into or out of the hinge plate 40, so as to change the length of the adjusting bolt located between the fixing member 100 and the hinge plate 40, and realize the adjustment process of the distance between the fixing member 100 and the hinge plate 40.

[0479] Alternatively, the adjusting member 150 can also be set as an adjusting nut. The adjusting nut can be threadedly connected to the connecting column, and the surface of the adjusting nut away from the hinge plate 40 abuts against the fixing member 100. When it is necessary to adjust the distance between the fixing member 100 and the hinge plate 40, the adjusting nut can be rotated to move the adjusting nut along the extending direction of the connecting column, so as to change the length of the connecting column located between the fixing member 100 and the hinge plate 40, and realize the adjustment process of the distance between the fixing member 100 and the hinge plate 40.

[0480] Exemplarily, the connecting member 140 can also be reused to form an adjusting nut. For example, the connecting member 140 can be rotatably arranged on the hinge plate 40 around the extending direction of the connecting member 140, and the first end of the connecting member 140 protrudes from the surface of the hinge plate 40 away from the fixing member 100. The connecting member 140 is threadedly connected to the fixing member 100. When it is necessary to adjust the distance between the fixing member 100 and the hinge plate 40, the connecting member 140 can be rotated to screw the threaded section of the connecting member 140 into or out of the fixing member 100, so as to change the length of the connecting member 140 located between the fixing member 100 and the hinge plate 40, and realize the adjustment process of the distance between the fixing member 100 and the hinge plate 40.

[0481] Alternatively, the connecting member 140 can be rotatably arranged on the fixing member 100 around the extending direction of the connecting member 140, and the first end of the connecting member 140 protrudes from the surface of the fixing member 100 away from the hinge plate 40. The connecting member 140 is threadedly connected to the hinge plate 40. When it is necessary to adjust the distance between the fixing member 100 and the hinge plate 40, the connecting member 140 can be rotated to screw the threaded section of the connecting member 140 into or out of the hinge plate 40, so as to change the length of the connecting member 140 located between the fixing member 100 and the hinge plate 40, and realize the adjustment process of the distance between the fixing member 100 and the hinge plate 40.

[0482] In some embodiments, the shapes of the first track groove 50 and the second track groove 60 can also be set as:

[0483] The first trajectory line is defined by the shape of the first trajectory groove 50. Among them, the central trajectory line of the first trajectory groove 50 is denoted as the first trajectory line S, and the first trajectory line S includes a first curved trajectory segment and a second curved trajectory segment that are smoothly transitionally connected. The second curved trajectory segment is located on the side of the first curved trajectory segment closer to the door sidewall 32.

[0484] The second trajectory groove 60 can be set as a curved groove. One end of the second trajectory groove 60 is farther from the door rear wall 33 and farther from the door sidewall 32 than the other end of the second trajectory groove 60. The second trajectory groove 60 bulges towards the direction of the door rear wall 33. The central trajectory line of the second trajectory groove 60 is denoted as the second trajectory line K. The second trajectory line K is defined by the shape of the second trajectory groove 60, and the second trajectory line K is curved and bulges towards the direction of the door rear wall 33.

[0485] In the first trajectory groove 50, the first trajectory groove 50 includes a first inflection point U, and the first inflection point U separates the first curved trajectory segment and the second curved trajectory segment. In the second trajectory groove 60, the second trajectory groove 60 includes a second inflection point V, and the second inflection point V separates the second trajectory line K into a first part and a second part.

[0486] Exemplarily, at the first inflection point U in the first trajectory groove 50, the extension direction of the second curved trajectory segment is offset relative to the first curved trajectory segment. At the second inflection point V in the second trajectory groove 60, the second part of the second trajectory line K is offset relative to the first part of the second trajectory line K, and the offset direction of the second curved trajectory segment is set opposite to the offset direction of the second part of the second trajectory line K.

[0487] Among them, the first trajectory line S includes a first positioning point P far from the door sidewall 32 1 and a sixth positioning point P close to the door sidewall 32 6 . The first trajectory line S starts from the first positioning point P 1 and extends along the first curved trajectory segment towards the direction of the door sidewall 32, and then extends along the second curved trajectory segment to the sixth positioning point P 6 ; the second trajectory line K includes a first guiding point Q far from the door sidewall 32 1 and a sixth guiding point Q close to the door sidewall 32 6 . The sixth guiding point Q 6 is located on the side of the first guiding point Q 1 far from the door front wall 31 and close to the door sidewall 32. The second trajectory line K extends along a curve from the first guiding point Q 1 towards the direction far from the door front wall 31 and close to the door sidewall 32 to the sixth guiding point Q 6 .

[0488] For example, the first track groove 50 may further include a plurality of first inflection points U. During the process of the door body 30 rotating and closing, the "inflection point of the first track groove 50" 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 50" may also mean that the positioning central axis P moves to the first first inflection point U; alternatively, the "inflection point of the first track groove 50" may refer to any other 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 50" may mean that the positioning central axis P passes through some of the first inflection points U and moves to a first inflection point U.

[0489] The second track groove 60 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 60" 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 60" may mean that the guiding central axis Q moves to the first second inflection point V; alternatively, the "inflection point of the second track groove 60" 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 60" 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.

[0490] When the door body 30 is in the closed state (i.e., at this time), the central axis of the first hinge axis (positioning central axis P) is located at the first positioning point P1 of the first track line S, and the central axis of the second hinge axis (guiding central axis Q) is located at the first guiding point Q1 of the second track line K. That is, when the door body 30 is in the closed state, the first hinge axis is located on the side of the second hinge axis close to the door side wall 32 and close to the door rear wall 33.

[0491] During the process of the door body 30 rotating and closing, when the positioning central axis P moves to the inflection point of the first track groove 50, the guiding central axis Q moves to the inflection point of the second track groove 60, and the door body 30 is at the first set angle. For example, as described in Embodiment 1, when the door body 30 is at the fourth angle G 4 at this time, the door body 30 is at the first set angle, the positioning central axis P moves to the inflection point of the first track groove 50, and furthermore, the guiding central axis Q moves to the inflection point of the second track groove 60.

[0492] 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 does not rotate to the first set angle. When the positioning central axis P passes through the inflection point of the first track groove 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in Embodiment 2, when the door body 30 is at the fourth angle G4 When the door body 30 has not rotated to the first set angle, the positioning central axis P moves to the inflection point of the first track groove 50. When the door body 30 is at the third angle G 3 the guiding central axis Q moves to the inflection point of the second track groove 60;

[0493] Or, 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 has not rotated to the first set angle; when the positioning central axis P moves to the inflection point of the first track groove 50 and the guiding central axis Q passes through the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in Embodiment 3, when the door body 30 is at the fourth angle G 4 the door body 30 has not rotated to the first set angle and the guiding central axis Q moves to the inflection point of the second track groove 60. When the door body 30 is at the third angle G 3 the positioning central axis P moves to the inflection point of the first track groove 50;

[0494] Or, during the process of the door body 30 rotating and closing, when the positioning central axis P moves to the inflection point of the first track groove 50 and at the same time the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 has not rotated to the first set angle; after the positioning central axis P passes through the inflection point of the first track groove 50 and the guiding central axis Q passes through the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in Embodiment 4, when the door body 30 is at the fourth angle G 4 the door body 30 has not rotated to the first set angle, the positioning central axis P passes through the inflection point of the first track groove 50, and moreover, the guiding central axis Q passes through the inflection point of the second track groove 60.

[0495] Or, 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 is at the first set angle. For example, as described in Embodiment 5, when the door body 30 is at the fourth angle G 4 the door body 30 is at the first set angle, the positioning central axis P passes through the inflection point of the first track groove 50, and moreover, the guiding central axis Q moves to the inflection point of the second track groove 60.

[0496] Or, 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 is at the first set angle. For example, as described in Embodiment 6, when the door body 30 is at the fourth angle G 4When the door body 30 is at the first set angle, the positioning central axis P moves to the inflection point of the first track groove 50, and the guiding central axis Q passes through the inflection point of the second track groove 60.

[0497] 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 50 and the guiding central axis Q moves to the inflection point of the second track groove 60, the door body 30 is at the first set angle. For example, as described in Embodiment Seven, when the door body 30 is at the fourth angle G 4 When the door body 30 is at the first set angle, the positioning central axis P moves to the inflection point of the first track groove 50, and the guiding central axis Q does not move to the inflection point of the second track groove 60.

[0498] 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 50, the guiding central axis Q moves to the inflection point of the second track groove 60, and the door body 30 is at the first set angle. For example, as described in Embodiment Six, when the door body 30 is at the fourth angle G 4 When the door body 30 is at the first set angle, the positioning central axis P does not move to the inflection point of the first track groove 50, and the guiding central axis Q moves to the inflection point of the second track groove 60.

[0499] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended 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 make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0500] For the sake of convenience of explanation, the above description has been made in combination 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 the purpose of better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified 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 fixedly arranged on the box body, and the movable part is fixedly arranged on the door body; The movable member is provided with a first track groove and a second track groove, the first track groove and the second track groove are both facing the fixed member, the first track groove has a first inflection point, and the second track groove has a second inflection point; The fixing member is provided with a first hinge shaft and a second hinge shaft; the first hinge shaft is relatively movable and arranged in the first track groove, and the second hinge shaft is relatively movable and arranged in the second track groove; The surface of the fixing member facing the movable member is further provided with a first inclined portion and a second inclined portion, wherein the first end of the first inclined portion is connected to the first part of the fixing member, and the second end of the first inclined portion is inclined upward; the first end of the second inclined portion is connected to the second end of the first inclined portion, and the second end of the second inclined portion is inclined downward, and the second end of the second inclined portion is connected to the second part of the fixing member; The movable member is provided with an abutting portion, and the abutting portion is used to abut the first inclined portion and the second inclined portion; during the process of the door body rotating and closing, the abutting portion abuts the first inclined portion and the second inclined portion in sequence; the first hinge shaft moves from the first end of the first track groove toward the second end of the first track groove; the second hinge shaft moves from the first end of the second track groove toward the second end of the second track groove; When the abutting portion is located at the first end of the first inclined portion, the first hinge axis is located between the first inflection point and the second end of the first track groove; and the second hinge axis is located at the second inflection point; Alternatively, when the abutting portion is located at the first end of the first inclined portion, the first hinge axis is located at the first inflection point; in the second track groove, the second hinge axis is located between the second inflection point and the second end of the second track groove.

2. The refrigerator according to claim 1, characterized in that: The first inflection point divides the first track groove into a curved groove segment and a straight groove segment; a portion of the first track groove between the first end of the first track groove and the first inflection point forms the curved groove segment, and a portion of the first track groove between the first inflection point and the second end of the first track groove forms the straight groove segment; The second inflection point divides the second trajectory groove into a first curve segment and a second curve segment; the portion of the second trajectory groove located between the first end of the second trajectory groove and the second inflection point forms the first curve segment, and the portion of the second trajectory groove located between the second inflection point and the second end of the second trajectory groove forms the second curve segment.

3. The refrigerator according to claim 1, characterized in that: The first inflection point divides the first track groove into a first curved portion and a second curved portion; a portion of the first track groove between the first end of the first track groove and the first inflection point forms the first curved portion, and a portion of the first track groove between the first inflection point and the second end of the first track groove forms the second curved portion; The second inflection point divides the second trajectory groove into a first curve segment and a second curve segment; the portion of the second trajectory groove located between the first end of the second trajectory groove and the second inflection point forms the first curve segment, and the portion of the second trajectory groove located between the second inflection point and the second end of the second trajectory groove forms the second curve segment.

4. The refrigerator according to claim 2, characterized in that: When the door body rotates per unit angle, the speed at which the first hinge axis is located in the curved groove section is less than the speed at which the first hinge axis is located in the straight groove section; The curvature of the second curved segment is smaller than the curvature of the first curved segment. When the door body rotates by a unit angle, the speed at which the second hinge axis is located in the first curved segment is smaller than the speed at which the second hinge axis is located in the second curved segment.

5. The refrigerator according to claim 1, characterized in that: The abutting portion comprises a first abutting surface and a second abutting surface connected to each other, the first abutting surface is arranged parallel to the first inclined portion, and the second abutting surface is arranged parallel to the second inclined portion; During the process of the door body rotating and closing, when the abutting portion moves from the first end of the first inclined portion toward the second end of the first inclined portion, the first abutting surface abuts against the first inclined portion, and the door body moves upward in the vertical direction through the movable part; when the abutting portion moves from the first end of the second inclined portion toward the second end of the second inclined portion, the second abutting surface abuts against the second inclined portion, and the door body moves downward in the vertical direction.

6. The refrigerator according to claim 5, characterized in that: The height of the first inclined portion is equal to the height of the second inclined portion, and the second end of the first inclined portion is arranged flush with the first end of the second inclined portion; When the abutting portion is located at the first end of the first inclined portion, the first abutting surface is in contact with the first inclined portion; when the abutting portion is located at the second end of the second inclined portion, the second abutting surface is in contact with the second inclined portion.

7. The refrigerator according to claim 6, characterized in that: In the vertical direction, the heights of the first inclined portion and the second inclined portion are greater than or equal to 1 mm and less than or equal to 5 mm; When the abutting portion is located at the first part of the fixing member, the bottom of the abutting portion abuts against the first part of the fixing member, or the bottom of the abutting portion is spaced apart from the first part of the fixing member.

8. The refrigerator according to any one of claims 1 to 7, characterized in that: The door body further comprises a door rear wall and a door seal, wherein the door rear wall is a side wall of the door body close to the box body; The door seal is arranged on the door rear wall; when the door body is in the closed state, the door seal abuts against the box body to block the gap between the door body and the box body; when the abutting portion abuts against the second inclined portion, the side of the door seal facing away from the door rear wall contacts the box body.

9. A refrigerator, characterized in that: It comprises a box body, a door body and a gravity self-closing structure, wherein the door body is used to close or open the accommodating cavity of the box body; the opening angle of the door body relative to the box body has a first setting angle, a second setting angle and a third setting angle which decrease in sequence; The gravity self-closing structure is arranged at the lower end of the door body, and the gravity self-closing structure comprises a 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 part is provided with a first track groove and a second track groove facing the fixed part, the first track groove has a first inflection point, and the second track groove has a second inflection point; the fixed part is provided with a first hinge shaft and a second hinge shaft, 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 second track groove; The surface of the fixing member facing the movable member is further provided with a first inclined portion and a second inclined portion, wherein the first end of the first inclined portion is connected to the first part of the fixing member, and the second end of the first inclined portion is inclined upward; the first end of the second inclined portion is connected to the second end of the first inclined portion, and the second end of the second inclined portion is inclined downward, and the second end of the second inclined portion is connected to the second part of the fixing member; The movable member is provided with an abutment portion, and the abutment portion is used to abut the first inclined portion and the second inclined portion; During the process of the door body rotating and closing to the first set angle, the abutment portion is movably disposed on the first part of the fixing member, the first hinge axis moves toward the first inflection point, and the second hinge axis moves toward the second inflection point; When the door body is located at the first set angle, the abutment portion is located at the first end of the first inclined portion; The first hinge axis passes through the first inflection point; The second hinge axis is located at the second inflection point; or, the first hinge axis is located at the first inflection point; in the second track groove, the second hinge axis passes through the second inflection point; During the process of the door body rotating and closing from the first setting angle to the second setting angle, the abutment portion moves obliquely upward from the first end of the first inclined portion to the second end of the first inclined portion; during the process of the door body rotating and closing from the second setting angle to the third setting angle, the abutment portion moves obliquely downward from the first end of the second inclined portion to the second end of the second inclined portion.

10. The refrigerator according to claim 9, characterized in that: The difference between the first setting angle and the third setting angle is greater than or equal to 10 degrees and less than or equal to 45 degrees; And / or, the difference between the first set angle and the second set angle is greater than or equal to the difference between the second set angle and the third set angle.

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