Refrigerator

Abstract

The embodiment of the utility model provides a refrigerator, belongs to the technical field of household appliances, and aims to solve the technical problems that in the related technology, a gap is likely to occur between a door body and a refrigerator body, and the sealing performance of a containing cavity is poor. The refrigerator comprises a refrigerator body, a door body and a gravity self-closing structure, wherein the door body is rotatably arranged on the refrigerator body; the gravity self-closing structure comprises a fixed part and a movable part, and the movable part is provided with a first track groove and a second track groove; 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, the abutting part sequentially abuts against the guide structure, the first inclined part and the second inclined part. 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 the Chinese patent application filed with the China Patent Office on November 18, 2023, with application number 202311542938.1 and application name “Refrigerator”, the contents of which are incorporated by reference in this application. Technical Field

[0002] The embodiments of the present application relate to the technical field of household appliances, and in particular 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 receiving food or other items. The door body can be movably arranged on the box body so as to close or open the receiving cavity through the door body. However, when the door body is closed to close the receiving cavity, a gap is likely to appear between the door body and the box body, and the sealing performance of the receiving cavity is poor. Utility Model Content

[0004] The embodiment of the present application provides a refrigerator that can solve the technical problems of gaps easily appearing between the door body and the box body and poor sealing of the accommodating cavity.

[0005] In a first aspect, an embodiment of the present application provides a refrigerator, comprising:

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

[0007] A door body, the door body can be rotatably arranged on the box body to close or open the accommodating cavity;

[0008] 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;

[0009] The movable member is provided with a first track groove and a second track groove, and the first track groove and the second track groove are both facing the fixed member;

[0010] 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;

[0011] 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;

[0012] The movable part is provided with an abutment portion, and the abutment portion is provided with a contact piece; during the process of the door body rotating and closing, the abutment portion abuts against the first inclined portion and the second inclined portion in sequence through the contact piece; the first hinge shaft moves from the first end of the first trajectory groove toward the second end of the first trajectory groove; the second hinge shaft moves from the first end of the second trajectory groove toward the second end of the second trajectory groove.

[0013] In the refrigerator of the embodiment of the present application, during the process of the door body rotating and closing, the abutment 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, and the movable member drives the door body upward through the abutment portion; and the abutment 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 downward through the abutment portion, so that the abutment 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 abutment 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 rotating and opening the door body, the gravity of the door body needs to be overcome so that the door body can drive the abutting part to move from the second end of the second inclined part to the first end of the second inclined part, thereby limiting the abutting part to a certain extent through the second inclined part, reducing the possibility of movement of the abutting part; during the process of rotating and closing the door body, when the abutting part abuts against the second inclined part, the abutting part can move toward the second end of the second inclined part under the action of the gravity of the door, thereby making the process of moving the door body to the side of the second inclined part away from the first inclined part more convenient.

[0015] In a second aspect, an embodiment of the present application provides a refrigerator, comprising a box body, a door body, and a gravity self-closing structure, wherein the door body is used to close or open a receiving 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 that decrease in sequence;

[0016] 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 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;

[0017] 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;

[0018] The movable member is provided with an abutting portion, and the abutting portion is provided with a contact member; the abutting portion abuts against the first inclined portion and the second inclined portion through the contact member;

[0019] During the process of the door body rotating and closing to the first setting angle, the abutting portion is movably disposed on the first part of the fixing member through the contact member; when the door body is located at the first setting angle, the abutting portion is located at the first end of the first inclined portion;

[0020] 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 through the contact piece; 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 through the contact piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0022] Figure 1 is a perspective view of a refrigerator according to some embodiments;

[0023] Figure 2 is a top view according to some embodiments;

[0024] Figure 3 is a schematic structural diagram of a hinge assembly of a refrigerator according to some embodiments;

[0025] Figure 4 is an exploded view of a hinge assembly at the upper right corner of a refrigerator according to some embodiments;

[0026] Figure 5 is a structural diagram of a hinge assembly of a refrigerator according to some embodiments when the door body in the first embodiment is in a closed state;

[0027] Figure 6 The refrigerator according to some embodiments is opened to The structural diagram of the hinge assembly;

[0028] Figure 7 The refrigerator according to some embodiments is opened to The structural diagram of the hinge assembly;

[0029] Figure 8 The refrigerator according to some embodiments is opened to The structural diagram of the hinge assembly;

[0030] Fig. 9 The refrigerator according to some embodiments is opened to The structural diagram of the hinge assembly;

[0031] Fig.10 The refrigerator according to some embodiments is opened to Structural diagram of the hinge assembly chain;

[0032] Fig.11 Schematic diagram of the motion trajectory of the first side edge W and the second side edge N relative to the hinge assembly in Example 1 of the refrigerator according to some embodiments;

[0033] Fig.12 It is a schematic diagram of the movement of the first hinge axis relative to the first track groove and the second hinge axis relative to the second track groove in the first embodiment of the refrigerator according to some embodiments;

[0034] Fig.13 The door of the refrigerator according to some embodiments is opened to A schematic diagram of the position of the first hinge axis relative to the first track groove and the second hinge axis relative to the second track groove;

[0035] Fig.14 The door of the refrigerator according to some embodiments is opened to A schematic diagram of the position of the first hinge axis relative to the first track groove and the second hinge axis relative to the second track groove;

[0036] Fig.15 The door of the refrigerator according to some embodiments is opened to A schematic diagram of the position of the first hinge axis relative to the first track groove and the second hinge axis relative to the second track groove;

[0037] Fig.16 The door of the refrigerator according to some embodiments is opened to A schematic diagram of the position of the first hinge axis relative to the first track groove and the second hinge axis relative to the second track groove;

[0038] Fig.17 The door of the refrigerator according to some embodiments is opened to A schematic diagram of the position of the first hinge axis relative to the first track groove and the second hinge axis relative to the second track groove;

[0039] Fig.18 is a structural schematic diagram of a gravity self-closing structure of a refrigerator according to some embodiments;

[0040] Fig.19 An exploded view of fixed parts and movable parts of a gravity self-closing structure of a refrigerator according to some embodiments;

[0041] Fig. 20 It is a structural schematic diagram of the abutting portion abutting against the first inclined portion during the process of the door body rotating and closing according to some embodiments;

[0042] Fig.21 It is a structural schematic diagram of the abutting portion abutting against the second end of the first inclined portion during the process of the door body rotating and closing according to some embodiments;

[0043] Fig. 22 It is a structural schematic diagram of the abutting portion abutting against the second inclined portion during the process of the door body rotating and closing according to some embodiments;

[0044] Fig.23 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body is not rotated to the first set angle during the process of rotating and closing according to some embodiments;

[0045] Fig.24 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis 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 some embodiments;

[0046] Fig.25 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body rotates to a second set angle during the process of rotating and closing according to some embodiments;

[0047] Fig.26 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body rotates to a third set angle during the process of rotating and closing according to some embodiments;

[0048] Fig. 27 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body is closed according to some embodiments;

[0049] Fig.28A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body is closed according to implementation mode 1 of some embodiments;

[0050] Fig.29 A schematic diagram of the position of the first hinge axis located at the first track groove and the second hinge axis located at the second track groove when the door body rotates to the first set angle during the process of rotating and closing in implementation mode 2 of some embodiments;

[0051] Fig.30 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body rotates to the first set angle during the process of rotating and closing in implementation mode 3 of some embodiments;

[0052] Fig.31 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body rotates to the first set angle during the process of rotating and closing in implementation mode 4 of some embodiments;

[0053] Fig.32 A schematic diagram of the positions of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body rotates to the first set angle during the process of rotating and closing in implementation mode 5 of some embodiments;

[0054] Fig.33 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body rotates to the first set angle during the process of rotating and closing in implementation mode 6 of some embodiments;

[0055] Fig.34 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body rotates to the first set angle during the process of rotating and closing in implementation mode 7 of some embodiments;

[0056] Fig.35 A schematic diagram of the position of the first hinge axis located in the first track groove and the second hinge axis located in the second track groove when the door body rotates to the first set angle during the process of rotating and closing in implementation mode eight of some embodiments;

[0057] Fig.36 is a schematic structural diagram of a movable member having a first abutting surface and a second abutting surface according to some embodiments;

[0058] Fig.37 is a schematic structural diagram of a movable member of another implementation mode having a first abutting surface and a second abutting surface according to some embodiments;

[0059] Fig.38is a schematic structural diagram of a movable member of another implementation mode having a first abutting surface and a second abutting surface according to some embodiments;

[0060] Fig.39 is a schematic structural diagram of a movable member having a columnar abutment portion according to some embodiments;

[0061] Fig.40 is a schematic structural diagram of a movable member having another implementation mode of a columnar abutment portion according to some embodiments;

[0062] Fig.41 is a schematic structural diagram of a movable member having a roller-type abutment portion according to some embodiments;

[0063] Fig.42 is a schematic structural diagram of a fixing member with a transition structure according to some embodiments;

[0064] Fig.43 is a schematic structural diagram of a fixing member with a ball according to some embodiments;

[0065] Fig.44 is a schematic structural diagram of a fixing member according to some embodiments;

[0066] Fig.45 is a schematic structural diagram of a fixing member with a roller according to some embodiments;

[0067] Fig.46 is a schematic structural diagram of a fixing member in which the first inclined portion and the second inclined portion face the first hinge axis and the second hinge axis according to some embodiments;

[0068] Fig.47 is a schematic structural diagram of a fixing member with a protruding guide structure according to some embodiments;

[0069] Fig.48 is a schematic structural diagram of a fixing member with a hidden guide structure according to some embodiments;

[0070] Fig.49 Schematic diagram of the structure of a hinge plate according to some embodiments.

[0071] Description of reference numerals:

[0072] 1. Refrigerator; 5. Door seal; 10. Refrigerator body; 30. Door body; 40. Hinge plate; 41. First hinge axis; 42. Second hinge axis; 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 DESCRIPTION

[0073] As described in the background technology, in the related art, a 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 can be movably arranged on the box body to close or open the receiving cavity through the door body. Exemplarily, the door body can be rotatably arranged on the box body, when the door body is attached to the box body, the door body closes the receiving cavity, and when an angle is formed between the door body and the box body, the door body opens the receiving cavity, so that food or other items can be taken out or put in through the receiving cavity.

[0074] However, when the door body is rotated to close the accommodating cavity through the door body, the door body moves toward the accommodating cavity. When the door body is attached to the surface of the box body, due to the influence of the air pressure change in the accommodating cavity, the door body is easily bounced off the surface of the box body, so that a gap is formed between the door body and the surface of the box body, thereby affecting the sealing of the accommodating cavity.

[0075] In view of this, the refrigerator of the embodiment of the present application is provided with a gravity self-closing structure, and the gravity self-closing structure includes a matching fixed part and a movable part. During the process of rotating and closing the door body, the abutting portion can move from the surface of the fixed part to the first end of the first inclined part, and move along the first end of the first inclined part to the second end of the first inclined part, and the movable part drives the door body to move upward through the abutting portion; and the abutting portion moves from the second end of the first inclined part to the first end of the second inclined part, and moves along the first end of the second inclined part to the second end of the second inclined part, and the movable part 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 part to the surface of the fixed part facing the movable part, so that the abutting portion can move from the side of the first inclined part away from the second inclined part to the side of the second inclined part away from the first inclined part;

[0076] In addition, the door body has a certain gravity. During the process of rotating and opening the door body, the gravity of the door body needs to be overcome so that the door body can drive the abutting part to move from the second end of the second inclined part to the first end of the second inclined part, thereby limiting the abutting part to a certain extent through the second inclined part, reducing the possibility of movement of the abutting part; during the process of rotating and closing the door body, when the abutting part abuts against the second inclined part, the abutting part can move toward the second end of the second inclined part under the action of the gravity of the door, thereby making the process of moving the door body to the side of the second inclined part away from the first inclined part more convenient.

[0077] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0078] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and common meanings.

[0079] 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 comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0080] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0081] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0082] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0083] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0084] In a first aspect, an embodiment of the present application provides a refrigerator, referring to Figure 1The refrigerator 1 includes a housing 10 having a receiving cavity, a door 30 connected to the housing 10 to open and close the receiving cavity, and a refrigeration device for supplying cold air to the receiving cavity. The housing 10 includes an inner liner defining the receiving cavity, an outer shell connected to the outer side of the inner liner to form the appearance of the refrigerator, and an insulating layer provided between the inner liner and the outer shell to insulate the receiving cavity.

[0085] The box body 10 defines a plurality of accommodating chambers. In this embodiment, the plurality of accommodating chambers may include a refrigerating chamber and a freezing chamber located below the refrigerating chamber. It should be noted that the types and arrangements of the plurality of accommodating chambers of the refrigerator 1 are not limited thereto.

[0086] A take-in / take-out opening is formed at the front end of the accommodating cavity, through which a user can place food into the accommodating cavity or take food out of the accommodating cavity. A rotatable door body 30 is provided on the box body 10 to open or close the take-in / take-out opening of the accommodating cavity. For example, the door body 30 is rotatably connected to the box body 10 by a hinge assembly located at the upper part of the refrigerator 1 and a hinge assembly located at the lower part of the refrigerator 1.

[0087] The box body 10 includes a first side wall (ie, one of the left and right walls of the box body 10) and a second side wall (ie, the other of the left and right walls of the box body 10) that are oppositely disposed. The hinge assembly is disposed on the box body 10 and is close to the first side wall.

[0088] The door body 30 has a door front wall 31 away from the box body 10 when the door body 30 is closed, a door rear wall 33 arranged opposite to the door front wall 31, and a door side wall 32 close to the hinge assembly and connected to the door front wall 31. For example, when the hinge assembly is located on the right side of the box body 10, the right side wall of the door body 30 is the door side wall 32. When the hinge assembly is located on the left side of the box body 10, the left side wall of the door body 30 is the door side wall 32.

[0089] The front wall 31 and the side wall 32 of the door body 30 intersect to form a first side edge W, and the side wall 32 and the rear 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 of the second side edge N away from the box body 10 .

[0090] It should be noted that when both the door front wall 31 and the door side wall 32 are flat wall surfaces, the intersection line of the plane where the door front wall 31 is located and the plane where the door side wall 32 is located is the theoretical first side edge W. The setting of the rounded transition at the intersection of the door front wall 31 and the door side wall 32 forms a first side edge W along the height direction of the door body 30 (i.e., Figure 1 A surface extending in the up and down directions (as shown in FIG. ).

[0091] For ease of description, any straight line extending along the height direction of the door body 30 on the curved surface represents the first side edge W. Similarly, the rounded transition is set at the intersection of the door rear wall 33 and the door side wall 32, and the second side edge N can be represented by the intersection line of the planes where the door rear wall 33 and the door side wall 32 are located, or by a straight line close to and parallel to the intersection line.

[0092] like Figure 2 and Figure 3 As shown, 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 access opening and fits with the front end surface of the box body 10 to effectively seal the connection between the door body 30 and the box body 10, thereby ensuring that the door body 30 seals the access opening to prevent cold air from escaping. For example, the door seal 5 is ring-shaped.

[0093] Below, a refrigerator 1 is arranged in a cabinet (for example Figure 3 The structure of the hinge assembly is described as follows, referring to the structure located on the right side of the refrigerator 1. Figures 2 to 4 The hinge assembly includes a first hinge shaft 41 (i.e., a main hinge shaft), and a second hinge shaft 42 (i.e., an auxiliary hinge shaft) located on the side of the first hinge shaft 41 away from the first body side wall. The end of the door body 30 close to the hinge assembly is provided with a first track groove 50 and a second track groove 60. 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. When the door body 30 rotates to open or close, 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.

[0094] The hinge assembly includes a hinge plate 40 fixedly connected to the box body 10, and the hinge plate 40 includes a connecting portion 401 connected to the box body 10 and an extending portion 402 extending forward from the connecting portion 401 and in a horizontal plate shape. The connecting portion 401 can be connected to the box body 10 by fasteners such as screws, pins and bolts.

[0095] For example, see 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 box body 10, and a first hinge shaft 41 and a second hinge shaft 42 are connected to the hinge plate 40 to form a limited axis 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 formed integrally, or can be provided separately and assembled with each other. Among them, the first hinge shaft 41 and the second hinge shaft 42 are arranged on the extension part 402 and extend vertically downward.

[0096] See also Figure 5-Figure 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 surface of the box body 10. The first hinge shaft 41 and the second hinge shaft 42 are arranged on the hinge plate 40 and extend upward.

[0097] Corresponding to the position of the hinge plate 40, the upper and lower ends of the door body 30 are provided with a first track groove 50 and a second track groove 60. For example, the positions of the two first track grooves 50 at the upper and lower ends of the door body 30 in the height direction of the refrigerator 1 correspond, and the positions of the two second track grooves 60 in the height direction of the refrigerator 1 correspond, so that the movements of the upper and lower ends of the door body 30 are consistent, so that the door body 30 can be opened or closed more smoothly.

[0098] In this embodiment, continue to refer to Figure 2 The plane where the side wall of the box body 10 close to the hinge plate 40 (i.e., the first body side wall) is located is defined as the reference plane M 0 , when the refrigerator 1 is stored in the cabinet, the reference plane M is defined 0 The side close to the cabinet is the outer side, and the side opposite to it close to the accommodating cavity is the inner side.

[0099] It is understandable 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 open normally.

[0100] In summary, if the door body 30 can move toward the inner side during the rotation process, the first side edge W will not exceed the reference plane M. 0 For example, when the hinge plate 40 is disposed on the right side of the door body 30, the inner side is the reference plane M 0 When the hinge plate 40 is arranged on the left side of the door body 30, the inner side is the reference plane M. 0 If the door body 30 is on the right side of the body, the door body 30 needs to move to the right during the rotation.

[0101] For example, Figure 3 As shown, the central trajectory line of the first trajectory groove 50 is recorded as the first trajectory line S, and the first trajectory line S is defined by the shape of the first trajectory groove 50. The first trajectory line S includes a straight trajectory segment and a curved trajectory segment connected by a smooth transition. The straight trajectory segment extends toward the door side wall 32, and the curved trajectory segment is located on the side of the straight trajectory segment close to the door side wall 32, and protrudes toward the direction close to the second side edge N.

[0102] The first trajectory groove 50 has a first inflection point, which divides the first trajectory groove 50 into a curved groove segment and a straight groove segment. The portion of the first trajectory groove 50 located between the first end of the first trajectory groove 50 and the first inflection point forms a curved groove segment, and the center trajectory line of the curved groove segment is correspondingly recorded as the curved trajectory segment; the portion of the first trajectory groove 50 located between the first inflection point and the second end of the first trajectory groove 50 forms a straight groove segment, and the center trajectory line of the straight groove segment is correspondingly recorded as the straight trajectory segment.

[0103] The second track groove 60 can be set as a curved groove, and one end of the second track groove 60 is farther away from the door rear wall 33 and the door side wall 32 than the other end of the second track groove 60. The second track groove 60 protrudes toward the door rear wall 33. The center track line of the second track groove 60 is recorded 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 protrudes toward the door rear wall 33.

[0104] The second inflection point divides the second track groove 60 into a first curved segment and a second curved segment; the portion of the second track groove 60 between the first end of the second track groove 60 and the second inflection point forms the first curved segment, and the portion of the second track groove between the second inflection point and the second end of the second track groove 60 forms the second curved segment.

[0105] When the door body 30 rotates by a unit angle, the speed at which the first hinge axis 41 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 less than the curvature of the first curved segment, and when the door body 30 rotates by a unit angle, the speed at which the second hinge axis is located in the first curved segment is less than the speed at which the second hinge axis is located in the second curved segment.

[0106] Alternatively, the first trajectory groove 50 can also be set as a curved groove, and the first inflection point divides the first trajectory groove 50 into a first curved portion and a second curved portion; the portion of the first trajectory groove 50 located between the first end of the first trajectory groove 50 and the first inflection point forms the first curved portion, and the portion of the first trajectory groove 50 located between the first inflection point and the second end of the first trajectory groove 50 forms the second curved portion.

[0107] Among them, Figure 5 As shown, the first track line S includes a first positioning point P1 away from the door side wall 32 and a sixth positioning point P6 close to the door side wall 32. The first track line S is composed of the first positioning point P 1 First, it extends along a straight line toward the door side wall 32, and then extends along a curve to the sixth positioning point P 6 ;

[0108] For example, the first trajectory line S is formed by the first positioning point P 1 First, it extends along a straight line toward the direction close to the door side wall 32, and then extends along a curve toward the direction close to the door side wall 32 and the door front wall 31 to the sixth positioning point P6 The first positioning point P 1 The distance from the front wall 31 is denoted as D 1 , the sixth positioning point P 6 The distance from the front wall 31 is denoted as D 2 , and D 1 >D 2 .

[0109] For example, the sixth positioning point P 6 Located at the first positioning point P 1 The side close to the door side wall 32 and away from the door front wall 31, that is, the first track line S is from the first positioning point P 1 First, it extends along a straight line toward the direction close to the door side wall 32, and then extends along a curve toward the direction close to the door side wall 32 and away from the door front wall 31 to the sixth positioning point P 6 .

[0110] In the following, the first trajectory line S is taken from the first positioning point P 1 First, it extends along a straight line toward the direction close to the door side wall 32, and then extends along a curve toward the direction close to the door side wall 32 and the door front wall 31 to the sixth positioning point P 6 Take this as an example to illustrate.

[0111] like Figure 5 As shown, the second trajectory line K includes a first guide point Q away from the door side wall 32 1 and a sixth guide point Q near the door side wall 32 6 . The sixth guide point Q 6 Located at the first guide point Q 1 On the side away from the door front wall 31 and close to the door side wall 32, the second trajectory line K is from the first guide point Q 1 The guide point Q is extended along the curve in a direction away from the door front wall 31 and close to the door side wall 32 to the sixth guide point Q. 6 .

[0112] When the door body 30 is in the closed state (i.e. When the door 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 (guide central axis Q) is located at the first guide 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.

[0113] First guide point Q 1 The distance from the front wall 31 is denoted as Z 1 , the sixth guide point Q 6 The distance from the front wall 31 is denoted as Z 2 For example, Z 1 <D 2 <D1 <Z 2 The above arrangement enables the second track groove 60 to effectively limit the movement of the second hinge shaft 42 to drive the first hinge shaft 41 to move in the first track groove 50, thereby moving the door body 30 inward by a certain distance during the opening process of the door body 30 and ensuring the stability of the door body 30 rotating to open.

[0114] like Figure 5 As shown, in this embodiment, when the door body 30 is in a closed state, the central axis (positioning central axis P) of the first hinge axis 41 is located at the first positioning point P of the first trajectory line S. 1 The central axis (guide central axis Q) of the second hinge axis 42 is located at the first guide point Q of the second trajectory line K. 1 That is, when the door body 30 is in a closed state, the first hinge shaft 41 is located on a side of the second hinge shaft 42 close to the door side wall 32 and close to the door rear wall 33 .

[0115] Combination Figure 5 , the door body 30 is in a closed state, and the distance between the first hinge axis 41 and the second hinge axis 42 in a 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 recorded as L 2 , and 7.5mm≤L 2 ≤30mm. For example, when L 1 =5mm, L 2 =15mm, the thickness of the door body 30 is between 44mm and 53mm, so that during the opening process of the door body 30, the first side edge W exceeds the reference plane M 0 The distance is small, for example, the distance is less than 3 mm.

[0116] For example, L 1 2.5mm, 5mm, 7.5mm or 10mm, L 2 7.5mm, 15mm, 25mm or 30mm.

[0117] During the process of the door body 30 rotating and closing, when the door body 30 is rotated from the maximum angle G maxDuring the process of rotating to the closed state, the first hinge shaft moves relative to the first track groove 50 and always moves in the direction away from the door side wall 32, and the second hinge shaft moves relative to the second track groove 60 and always moves in the direction away from the door side wall 32, that is, during the entire process of closing the door body 30, the first hinge shaft and the second hinge shaft both maintain unidirectional movement without reversing, so that the force directions of the first hinge shaft and the second hinge shaft are always consistent, which is conducive to improving the feel of the door body 30 when opening and closing, improving 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 closing the door body 30, the first hinge shaft and the second hinge shaft maintain movement, so that the acceleration change of the door body 30 is small, which is conducive to improving the smoothness of the door body 30 when opening.

[0118] 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 distributed along the first trajectory line S. And the second positioning point P 2 , the third positioning point P 3 , the fourth positioning point P 4 The fourth positioning point P is distributed along the straight track segment toward the door side wall 32. 4 , the fifth positioning point P 5 , the sixth positioning point P 6 The curved track segment is distributed toward the door side wall 32 and the door front wall 3131 .

[0119] For example, the first guide point Q 1 , the second guide point Q 2 , the third guide point Q 3 、The fourth guide point Q 4 、Fifth guide point Q 5 、The sixth guide point Q 6 are distributed along the first trajectory line S. And the second guide point Q 2 , the third guide point Q 3 、The fourth guide point Q 4 、Fifth guide point Q 5 The fifth guide point Q is distributed along the second trajectory line K in a direction close to the door side wall 32 and away from the door front wall 31. 5 、The sixth guide point Q 6The second track line K is distributed toward the door side wall 32 and the door front wall 31. It should be noted that G 1 , G 2 , G 3 , G 4 , G max They can be recorded in sequence as the first angle, the second angle, the third angle, the fourth angle and the maximum angle.

[0120] In the following description, Indicates the opening angle of the door body 30. The opening angle when the door body 30 is closed The opening angle of the door 30 when it is opened relative to the box body 10 to open the access opening is a positive number;

[0121] like Figure 5 As shown, When the door body 30 is in a closed state; the positioning center axis P is located at the first positioning point P of the first trajectory line S 1 The guide center axis Q is located at the first guide point Q of the second trajectory line K 1 .

[0122] like Figure 6 As shown, When the door 30 is opened from the closed state to a state smaller than G 2 During the process, the first hinge axis 41 moves along the straight track segment of the first track line S toward the door side wall 32, and the second hinge axis 42 moves along the curved second track line K toward the door side wall 32 and away from the door front wall 31.

[0123] 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 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.

[0124] Thus, when the door body 30 is opened at an angle When selecting 0° to G 2 Any angle within the range can represent that the door body 30 is opened to the interval (0°, G 2 ), 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. Figure 6 and Fig.13 As shown, Represents the position within the opening angle range for comparison with when the door body 30 is opened to other angles.

[0125] like Figure 6 and Fig.13As shown, when the door 30 is opened to G 1 When the positioning center axis P is located at the second positioning point P of the first trajectory line S 2 , the second positioning point P 2 Located at the first positioning point P 1 The guide center axis Q is located at the second guide point Q of the second track line K. 2 , the second guide point Q 2 Located at the first guide point Q 1 A side close to the door side wall 32 and away from the door front wall 31.

[0126] like Figure 7 and Fig.14 As shown, when When the door 30 rotates to open to G 2 The positioning center axis P is located at the third positioning point P of the straight track segment of the first track line S. 3 , the third positioning point P 3 Located at the second positioning point P 2 The third positioning point P is located on the side close to the door side wall 32. 3 The end point of the straight track segment close to the door side wall 32, i.e., the third positioning point P 3 It is the end point where the first hinge shaft 41 moves in a straight line relative to the first track groove 50 toward the door side wall 32 .

[0127] The guiding center axis Q is located at the third guiding point Q of the second trajectory line K 3 , the third guide point Q 3 Located at the second guide point Q 2 The side close to the door side wall 32 and away from the door front wall 31. For example, G 2 ∈[26°, 30°], any value. In summary, the door body 30 is opened from the closed state to G 2 During the process, the first hinge shaft 41 moves along a straight line toward the door side wall 32 , and the second hinge shaft 42 moves along a curve toward the door side wall 32 and away from the door front wall 31 .

[0128] like Figure 8 As shown, When the door body 30 is G 2 Open to less than G 4 During the process of any angle, the first hinge axis 41 moves along the curved trajectory segment of the first trajectory line S toward 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 toward the direction close to the door side wall 32 and away from the door front wall 31.

[0129] 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 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. Similarly, when the opening angle of the door body 30 is different, 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 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. When in, select G 2 To G 4 Any opening angle within the range may 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. Fig.15 As shown, It represents the position of the door body 30 opened to the angle range, so as to compare with the position of the door body 30 opened to other angles.

[0130] See also Figure 8 and Fig.15 , when the door 30 is opened to G 3 When the positioning center axis P is located at the fourth positioning point P of the first trajectory line S 4 , the fourth positioning point P 4 Located at the third positioning point P 3 The guide center axis Q is located at the fourth guide point Q of the second track line K. 4 , the fourth guide point Q 4 Located at the third guide point Q 3 The side close to the door side wall 32 and away from the door front wall 31. For example, G 3 ∈[43°, 47°]; in this embodiment, G is set 3 =45°.

[0131] like Fig. 9 and Fig.16 As shown, when When the door 30 rotates to open to G 4 The positioning center axis P is located at the fifth positioning point P of the curved track segment of the first track line S. 5 , the fifth positioning point P 5 Located at the fourth positioning point P 4 The guide center axis Q is located at the fifth guide point Q of the second track line K. 5 , the fifth guide point Q 5 Located at the fourth guide point Q 4 The side close to the door side wall 32 and away from the door front wall 31. For example, G 4 ∈ any value in [88°, 92°].

[0132] In this embodiment, When the door is opened to 90°, the first hinge axis 41 is located at a position relative to the first track groove 50 when the door is closed, which is close to the door side wall 32; that is, the fifth positioning point P 5 Located at the first positioning point P 1 One side close to the door side wall 32.

[0133] like Fig.10 As shown, when When the door body 30 is G 4 Rotate open to G max In this process, the first hinge shaft 41 moves along the curved track segment of the first track line S toward the direction close to the door side wall 32 and the door front wall 31, and the second hinge shaft 42 moves along the second track line K toward the direction close to the door side wall 32 and the door front wall 31. max =116°.

[0134] Above, when the opening angle of the door body 30 is When the door 30 is opened to G 4 To G max When the angles between the first hinge axis 41 and the second hinge axis 42 are different, the position of the first hinge axis 41 relative to the curved 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.

[0135] Similarly, when the opening angle of the door body 30 is When any opening angle in the interval is selected, 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 when the door body 30 is opened to the interval can be represented. Fig.17 As shown, It represents the position of the door body 30 within the opening angle range, for comparison with when the door body 30 is opened to other states.

[0136] When the door 30 is opened to G max >90°, the positioning center axis P is located at the sixth positioning point P of the first trajectory line S 6 , the sixth positioning point P 6 Located at the fifth positioning point P 5 The guide center axis Q is located at the sixth guide point Q of the second track line K. 6 , the sixth guide point Q 6 Located at the fifth guide point Q 5 A side close to the door side wall 32 and close to the door front wall 31.

[0137] It should be noted that some embodiments of the present disclosure are not limited to the above configuration. In some embodiments, the door body 30 is made of G4 Open to G max During the process, the second hinge shaft 42 moves relative to the second track groove 60 toward the door side wall 32, and the first hinge shaft 41 withdraws relative to the first track groove 50, that is, the first hinge shaft 41 moves relative to the first track groove 50 toward the door side wall 32.

[0138] For example, the sixth positioning point Q 6 Located at the fifth anchor point Q 5 On the side close to the door side wall 32, during the opening process of the door body 30, the guide center axis Q moves to the fifth positioning point Q 5 As the door body 30 continues to open, the guide center axis Q continues to move toward the door side wall 32 to the sixth positioning point Q. 6 The positioning center axis P moves along the first trajectory line S in a direction away from the door side wall 32 to the sixth positioning point Q 6 .

[0139] It is understandable that, in combination with the door body 30 being opened 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 matching relationship between the first hinge axis 41 and the first track groove 50, and the second hinge axis 42 and the second track groove 60 includes the following situations.

[0140] When the door is opened at an angle of 30 When the first hinge shaft 41 moves along the straight track section of the first track groove 50, the first hinge shaft 41 moves along the straight track section of the first track groove 50. When the first hinge shaft 41 moves to the end point of the straight track segment of the first track groove 50 close to the door side wall 32 (i.e., the third positioning point P 3 ). When the door is opened at an angle of 30 When the first hinge shaft 41 moves along the curved track segment of the first track groove 50 .

[0141] When the door is opened at an angle of 30 (like When the door body 30 is opened at an angle of When the second hinge shaft 42 moves along the second track groove 60 toward the direction close to the door side wall 32 and the door front wall 31 .

[0142] In this embodiment, when the door body 30 is opened from the closed state to the G maxDuring the process of opening the door 30 from the closed state to the open state, the door 30 always moves inward relative to the position of the central axis P of the first hinge shaft 41 when the door 30 is closed. That is, when the first hinge shaft 41 is used as a stationary reference, when the door 30 is opened from the closed state to the open state, the door 30 always moves inward relative to the position of the central axis P of the first hinge shaft 41 when the door 30 is closed. max During the process, the door body 30 always moves toward the inner side relative to the central axis P of the first hinge axis 41.

[0143] When the door body 30 (or the first track groove 50 and the second track groove 60) is taken as a stationary reference, the position of the first hinge axis 41 when the door body 30 is closed is recorded as the first initial position. Then, when the door body 30 is opened from the closed state to the G max During the process of opening, the distance between the first hinge axis 41 and the first initial position gradually increases. That is, when the door body 30 is opened from the closed state to the G max During the process, the first hinge shaft 41 always moves towards the door side wall 32 relative to the door body 30.

[0144] For example, the door body 30 is made of G 2 Rotate open to G max During the process, the first hinge shaft 41 moves along the curved trajectory segment of the first trajectory line S toward the door side wall 32 and the door front wall 31. Every time the door body 30 rotates to open a unit angle, the speed at which the first hinge shaft 41 moves toward the door front wall 31 is approximately equal to the speed at which it moves toward the door side wall 32 (i.e., the difference between the two speeds is less than 1 mm).

[0145] Reference Fig.18 and Fig.19 In some embodiments, the refrigerator further includes a gravity self-closing structure, which may be disposed at the lower end of the door body 30 , and the gravity self-closing structure may include matching fixing members 100 and movable members 200 .

[0146] The fixed member 100 can be fixedly arranged on the box body 10, and the movable member 200 can be fixedly arranged on the door body 30. The movable member 200 and the fixed member 100 can be arranged in a 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.

[0147] When the door body is rotated and closed to a closed state, the door body 30 can move toward the box body 10 through the gravity self-closing structure, so that the door body 30 can abut against the box body 10, reducing the gap between the door body 30 and the box body 10.

[0148] For example, the surface of the fixed member 100 facing the movable member 200 may be provided with a first inclined portion 110 and a second inclined portion 120. 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 close 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.

[0149] The surface of the movable member 200 facing the fixed member 100 may be provided with an abutment portion 210, which can be used to abut against the surface of the fixed member 100 facing the movable member 200. The abutment 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 abutment portion 210.

[0150] The height of the first inclined portion 110 may be equal to the height of the second inclined portion 120 , and the first inclined portion 110 may 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 from the second inclined portion 120 to the first inclined portion 110 .

[0151] The first inclined portion 110 may 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 may 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 may drive the door body 30 to move downward through the abutting portion 210.

[0152] The second inclined portion 120 may 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 may 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 may drive the door body 30 to move upward through the abutting portion 210.

[0153] For example, when the door body 30 is in the closed state (i.e. When the door body 30 is in the open state (for example, When the contact portion 210 is in contact with the surface of the fixed member 100 facing the movable member 200 , the contact portion 210 is located on a side of the first inclined portion 110 away from the second inclined portion 120 .

[0154] Reference Figure 20-22 In the process of rotating and opening the door body 30, the contact portion 210 can move from the surface of the fixed 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, and the movable member 200 drives the door body 30 to move upward through the contact portion 210. The contact 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, and the movable member 200 drives the door body 30 to move downward through the contact portion 210, so that the contact portion 210 can move from the first end of the first inclined portion 110 to the surface of the fixed member 100 facing the movable member 200, so that the contact 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.

[0155] Reference Figure 20-22 In the process of rotating and closing the door body 30, the abutment portion 210 can move from the surface of the fixed 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, and the movable member 200 drives the door body 30 to move upward through the abutment portion 210; and the abutment 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, and the movable member 200 drives the door body 30 to move downward through the abutment portion 210, so that the abutment portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixed member 100 facing the movable member 200, so that the abutment 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.

[0156] It is easy to understand that when the abutment portion 210 is located on the surface of the fixing member 100, the bottom of the abutment portion 210 can abut against the surface of the fixing member 100, or the bottom of the abutment portion 210 can also be spaced apart from the surface of the fixing member 100. For example, the following description assumes that the bottom of the abutment portion 210 abuts against the surface of the fixing member 100.

[0157] The door body 30 has a certain gravity. During the process of rotating and opening the door body 30, it is necessary to overcome the gravity of the door body 30 so that the door body 30 can drive the abutment part 210 to move from the second end of the second inclined part 120 to the first end of the second inclined part 120, thereby the second inclined part 120 plays a certain limiting role on the abutment part 210, reducing the possibility of movement of the abutment part 210; and, during the process of rotating and closing the door body 30, when the abutment part 210 abuts against the second inclined part 120, the abutment part 210 can move toward the second end of the second inclined part 120 under the action of the gravity of the door body 30, thereby making the process of moving the door body 30 to the side of the second inclined part 120 away from the first inclined part 110 more convenient.

[0158] For example, when the abutment 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 loading and unloading opening, so that the door seal 5 fits against the front end surface of the box body 10 to effectively seal the connection between the door body 30 and the box body 10, thereby ensuring that the door body 30 seals the loading and unloading opening through the cooperation of the gravity self-closing structure and the door seal 5 to prevent cold air from overflowing.

[0159] Reference Figure 18-Figure 22 In some embodiments, in the hinge assembly located at the lower end of the door body 30, the first hinge axis 41 and the second hinge axis 42 can be arranged on the surface of the fixed part 100 facing the movable part 200, and the first hinge axis 41 and the second hinge axis 42 can both extend upward in the vertical direction; and the first track groove 50 and the second track groove 60 can both be correspondingly arranged on the surface of the movable part 200 facing the fixed part 100.

[0160] 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 part 200 drives the door body 30 to move in the vertical direction through the abutment part 210, the fixed part 100 is relatively fixed 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.

[0161] For example, when the movable part 200 drives the door body 30 to move upward through the abutment portion 210, 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; 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.

[0162] It is easy to understand that the length of the first hinge axis 41 extending out of the first track groove 50 and the length of the second hinge axis 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 fixing member 100, and the greater the length of the first hinge axis 41 located in the first track groove 50, the better the stability of the first hinge axis 41, and the greater the length of the second hinge axis 42 located in the second track groove 60, the better the stability of the second hinge axis 42.

[0163] For example, 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 axis 41 in the first track groove 50 can be improved by increasing the length of the first hinge axis 41 and the depth of the first track groove 50, and the stability of the second hinge axis 42 in the second track groove 60 can be improved by increasing the length of the second hinge axis 42 and the depth of the second track groove 60, so as to reduce the possibility of the movable member 200 being detached from the fixed member 100.

[0164] For example, when the abutment portion 210 abuts against the surface of the fixed part 100 facing the movable part 200, the length of the first hinge axis 41 in the first trajectory groove 50 is set as the first length of the first hinge axis 41, and the length of the second hinge axis 42 in the second trajectory groove 60 is set as the first length of the second hinge axis 42; when the abutment 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 axis 41 in the first trajectory groove 50 is set as the second length of the first hinge axis 41, and the length of the second hinge axis 42 in the second trajectory groove 60 is set as the second length of the second hinge axis 42.

[0165] Among them, the difference between the first length of the first hinge axis 41 and the second length of the first hinge axis 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, and the ratio of the first length of the first hinge axis 41 to the second length of the first hinge axis 41 can be set to be greater than or equal to 2 / 3 to ensure the stability of the first hinge axis 41 moving in the first track groove 50, and the ratio of the first length of the second hinge axis 42 to the second length of the second hinge axis 42 can be set to be greater than or equal to 2 / 3 to ensure the stability of the second hinge axis 42 moving in the second track groove 60.

[0166] For example, 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 axis 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 axis 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 axis 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 axis 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.

[0167] When the abutting portion 210 abuts against the surface of the fixed part 100 facing the movable part 200, the end of the first hinge axis 41 away from the fixed part 100 can abut against the bottom surface of the first track groove 50, and the first length of the first hinge axis 41 is equal to 7 mm, and the end of the second hinge axis 42 away from the fixed part 100 can abut against the bottom surface of the second track groove 60, and the first length of the second hinge axis 42 is equal to 5 mm; 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 axis 41 extending from the first track groove 50 is equal to 2 mm, the second length of the first hinge axis 41 is equal to 5 mm, the length of the second hinge axis 42 extending from the second track groove 60 is equal to 2 mm, and the second length of the second hinge axis 42 is equal to 3 mm.

[0168] For example, the angle between the line between the first hinge axis 41 and the second hinge axis 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 angle between the line between the first hinge axis 41 and the second hinge axis 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, and 40 degrees-45 degrees.

[0169] In some embodiments, the position of the first inclined portion 110 and the second inclined portion 120 may be determined according to the opening angle of the door body 30; for example, the opening angle of the door body 30 It can have a first setting angle, a second setting angle and a third setting angle that decrease in sequence, wherein when the opening angle of the door body 30 is set to the first setting angle, the abutment 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 setting angle, the abutment 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 setting angle, the abutment portion 210 abuts against the second end of the second inclined portion 120.

[0170] For example, when the opening angle of the door body 30 is Setting: 15 degrees degrees, the abutting portion 210 abuts against the first inclined portion 110, and when the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to a first set angle, the abutting portion 210 abuts against the first end of the first inclined portion 110, and 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: 5 degrees degrees, the abutting portion 210 abuts against the second inclined portion 120, and when the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to a third setting angle, the abutting portion 210 abuts against the second end of the second inclined portion 120, and when the opening angle of the door body 30 is When the angle of the abutting portion 210 is greater than 100 degrees, the abutting portion 210 can move from the second end of the first inclined portion 110 toward the first end of the second inclined portion 120 .

[0171] During the process of the door body 30 rotating and closing, when the opening angle of the door body 30 When the door 30 is opened at an angle of 1.5°, the contact portion 210 contacts the surface of the fixing member 100, and the contact 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 Setting: 15 degrees When the abutting portion 210 abuts against the first inclined portion 110, the movable member 200 drives the door body 30 to move upward through the abutting portion 210;

[0172] When the door is opened at an angle of 30 degrees, the abutment 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: 5 degrees When the door 30 opens at an angle of 1.5°, 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 door body 30 opens at an angle of 1.5°, 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 angle is 0.5, 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 with the front end surface of the box body 10 to effectively seal the connection between the door body 30 and the box body 10.

[0173] It should be noted that if the user pushes the door body 30 to rotate and close the door body 30, the door body 30 will have a jumping process of first upward and then downward when the abutting portion 210 abuts against the first inclined portion 110 and the second inclined portion 120 in sequence, thereby causing the user to have a certain sense of frustration. 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 can be adjusted to change the moving distance of the door body 30 in the vertical direction, thereby reducing the user's sense of frustration during the door closing process and improving the user's experience.

[0174] For example, the first setting angle, the second setting angle and the third setting angle of the door body 30 can be changed by adjusting the position and length of the first inclined portion 110 and the second inclined portion 120 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 in the vertical direction increases, and the difference between the second setting angle and the first setting angle increases; when the length of the second inclined portion 120 increases, the moving time of the door body 30 in the vertical direction increases, and the difference between the third setting angle and the second setting angle increases; and 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 remains unchanged, the inclination angle of the first inclined portion 110 decreases, and the inclination angle of the second inclined portion 120 increases.

[0175] In addition, 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 to determine the movement time of the door body 30 in the vertical direction.

[0176] For example, the length of the first inclined portion 110 may 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 may be greater than the length of the second inclined portion 120, so that the inclination angle of the first inclined portion 110 is smaller than the inclination angle of the second inclined portion 120; or, the length of the first inclined portion 110 may be smaller 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.

[0177] For example, when the opening angle of the door body 30 is Setting: 15 degrees degrees, the abutting portion 210 abuts against the first inclined portion 110, and when the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to a first set angle, the abutting portion 210 abuts against the first end of the first inclined portion 110, and 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: 8 degrees degrees, the abutting portion 210 abuts against the second inclined portion 120, and when the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to a third setting angle, the abutting portion 210 abuts against the second end of the second inclined portion 120, and when the opening angle of the door body 30 is When the angle of the abutting portion 210 is greater than 100 degrees, the abutting portion 210 can move from the second end of the first inclined portion 110 toward the first end of the second inclined portion 120 .

[0178] In some embodiments, the position of the first inclined portion 110 and the position of 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 of the movement process of the first hinge axis 41 and the second hinge axis 42.

[0179] Exemplarily, the center trajectory line of the first trajectory groove 50 is recorded as the first trajectory line S, and the first trajectory line S is defined by the shape of the first trajectory groove 50. The first trajectory line S includes a straight trajectory segment and a curved trajectory segment connected by a smooth transition. The straight trajectory segment extends toward the door side wall 32, and the curved trajectory segment is located on the side of the straight trajectory segment close to the door side wall 32, and protrudes toward the direction close to the second side edge N.

[0180] The second track groove 60 can be set as a curved groove, and one end of the second track groove 60 is farther away from the door rear wall 33 and the door side wall 32 than the other end of the second track groove 60. The second track groove 60 protrudes toward the door rear wall 33. The center track line of the second track groove 60 is recorded 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 protrudes toward the door rear wall 33.

[0181] The first trajectory line S includes a first positioning point P away from the door side wall 32. 1 and a sixth positioning point P close to the door side wall 32 6 The first trajectory line S is formed by the first positioning point P 1First, it extends along a straight line toward the door side wall 32, and then extends along a curve to the sixth positioning point P 6 The second trajectory line K includes a first guide point Q away from the door side wall 32 1 and a sixth guide point Q near the door side wall 32 6 . The sixth guide point Q 6 Located at the first guide point Q 1 On the side away from the door front wall 31 and close to the door side wall 32, the second trajectory line K is from the first guide point Q 1 The guide point Q is extended along the curve in a direction away from the door front wall 31 and close to the door side wall 32 to the sixth guide point Q. 6 .

[0182] When the door body 30 is in the closed state (i.e. When the door 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 (guide central axis Q) is located at the first guide 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.

[0183] During the process of the door body 30 rotating and closing, when the door body 30 is rotated from the maximum angle G max During the process of rotating to the closed state, the first hinge shaft moves relative to the first track groove 50 and always moves in the direction away from the door side wall 32, and the second hinge shaft moves relative to the second track groove 60 and always moves in the direction away from the door side wall 32, that is, during the entire process of closing the door body 30, the first hinge shaft and the second hinge shaft both maintain unidirectional movement without reversing, so that the force directions of the first hinge shaft and the second hinge shaft are always consistent, which is conducive to improving the feel of the door body 30 when opening and closing, improving 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 closing the door body 30, the first hinge shaft and the second hinge shaft maintain movement, so that the acceleration change of the door body 30 is small, which is conducive to improving the smoothness of the door body 30 when opening.

[0184] 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 distributed along the first trajectory line S. And the second positioning point P 2 , the third positioning point P 3, the fourth positioning point P 4 The fourth positioning point P is distributed along the straight track segment toward the door side wall 3232. 4 , the fifth positioning point P 5 , the sixth positioning point P 6 The curved track segment is distributed toward the door side wall 3232 and the door front wall 3131 .

[0185] For example, the first guide point Q 1 , the second guide point Q 2 , the third guide point Q 3 、The fourth guide point Q 4 、Fifth guide point Q 5 、The sixth guide point Q 6 are distributed along the first trajectory line S. And the second guide point Q 2 , the third guide point Q 3 、The fourth guide point Q 4 、Fifth guide point Q 5 The fifth guide point Q is distributed along the second trajectory line K in a direction close to the door side wall 32 and away from the door front wall 31. 5 、The sixth guide point Q 6 The second track line K is distributed toward the door side wall 32 and the door front wall 31. It should be noted that G 1 , G 2 , G 3 , G 4 , G max They can be recorded in sequence as the first angle, the second angle, the third angle, the fourth angle and the maximum angle.

[0186] Implementation Method 1

[0187] Reference Figure 23-Figure 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 can be known, and 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.

[0188] In the first stage, the door body 30 is made of G max Rotate to close G 4 ;

[0189] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the straight groove section of the first track groove 50 is recorded as the first average speed v1 ;

[0190] For example, the positioning center axis P is determined by the sixth positioning point P 6 The curved track segment along the first track line S moves away from the door side wall 32 and the door front wall 31, and the guide center axis Q is from the sixth guide point Q 6 The second track line K moves away from the door side wall 32 and the door front wall 31. For example, the positioning center axis P is located at the sixth positioning point P 6 Move along the curved track segment of the first track line S to the fifth positioning point P 5 ; The guiding center axis Q is from the sixth guiding point Q 6 Move along the second trajectory line K to the fifth guide point Q 5 .

[0191] In the door body 30 by G max Rotate to close G 4 During the process, the first hinge axis moves along the curved trajectory segment of the first trajectory line S in the direction away from the door side wall 32 and away from the door front wall 31. For every unit angle of rotation of the door body 30 to close, the speed at which the first hinge axis moves away from the door front wall 31 is approximately equal to the speed at which it moves away from the door side wall 32 (for example, the difference between the two speeds may be less than 1 mm).

[0192] Furthermore, in the first stage, the contact portion 210 always contacts the surface of the fixed member 100 facing the movable member 200 , is located on the surface of the first inclined portion 110 away from the second inclined portion 120 , and moves toward the first end of the first inclined portion 110 .

[0193] In the second stage, the door body 30 is made of G 4 Rotate to close G 3 ;

[0194] In the second stage, the first hinge axis moves in a curve 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 recorded as the second average speed v 2 , and the relationship between the first average velocity and the second average velocity satisfies: ν 1 >ν 2 ;

[0195] Door 30 by G 4 Passing G 3 Close to G 2 , the center axis P is located by the fifth positioning point P 5 The curved track segment along the first track line S moves toward the direction close to the door side wall 32 and the door front wall 31, and the guide center axis Q is from the fifth guide point Q 5Move along the second trajectory line K in a direction away from the door side wall 32 and close to the door front wall 31 .

[0196] For example, the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S passes through the fourth positioning point P 4 Move to the third positioning point P 3 ; The guiding center axis Q is from the fifth guiding point Q 5 Passing the fourth guide point Q along the second trajectory line K 4 Move to the third guide point Q 3 .

[0197] And, in the second stage, the fourth angle G 4 Can be reused to form the first setting angle, the fifth positioning point P 5 The first inflection point U of the first track groove 50 and the fifth guide point Q 5 The second inflection point V of the second track groove 60 is set, for example, when the positioning center axis P of the first hinge axis 41 moves to the fifth positioning point P 5 , and the guide center axis Q of the second hinge axis 42 moves to the fifth guide point Q 5 When the contact portion 210 is moved from the surface of the fixing member 100 to the first end of the first inclined portion 110;

[0198] The second angle G 2 It can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge axis 41 moves to the third positioning point P 3 , and the guide center axis Q of the second hinge axis 42 moves to the third guide point Q 3 When the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110;

[0199] When the door body 30 is at the third angle G 3 When the door body 30 is moved by G 4 Passing G 3 Close to G 2 When the contact portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110 , the door body 30 is driven to move upward in the vertical direction.

[0200] In the third stage, the door body 30 is made of G 2 Rotate to close;

[0201] 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 is moved from the third positioning point P3 The linear track segment along the first track line S moves in a direction away from the door side wall 32; the guide center axis Q is guided by the third guide point Q 3 Move along the second trajectory line K in a direction away from the door side wall 32 and away from the door front wall 31 .

[0202] For example, the positioning center axis P is determined by the third positioning point P 3 The straight line segment along the first trajectory line S passes through the second positioning point P 2 Move to the first positioning point P 1 ; The guiding center axis Q is from the third guiding point Q 3 Passing the second guide point Q along the second trajectory line K 2 Move to the first guide point Q 1 .

[0203] In the third stage, the first track groove 50 and the second track groove 60 are used as references, and the door body 30 is formed by G 2 When rotating from closed to closed, the axis line segment PQ moves from P 3 Q 3 Rotate counterclockwise and move inward to P 2 Q 2 , P 1 Q 1 Place (i.e. P 3 Q 3 →P 2 Q 2 →P 1 Q 1 ).

[0204] Since the first track groove 50 and the second track groove 60 are disposed on the movable member 200 on the door body 30, the axis line segment PQ represents the movement of the fixed member 100 disposed on the box body 10. Therefore, if the door body 30 is taken as a stationary reference, when the door body 30 is moved by G 2 During the process of rotating to the closed state, the box body 10 keeps rotating counterclockwise relative to the door body 30 and moves inward by a certain distance.

[0205] According to the relativity of motion, when the box 10 is taken as a stationary reference, the door 30 is 2 During the process of rotating and closing to the closed state, the door body 30 rotates clockwise relative to the box body 10 and moves outward by a certain distance.

[0206] And, in the third stage, the first angle G 1 It can be reused to form a third setting angle, for example, when the door body 30 is formed by G 2 Close to G 1 During the process, the positioning center axis P of the first hinge axis 41 is oriented toward the second positioning point P 2The guide center axis Q of the second hinge axis 42 is moved toward the second guide point Q 2 The door body 30 can move from the second end of the first inclined portion 110 to the first end of the second inclined portion 120, and can move along the first end of the second inclined portion 120 toward the second end of the second inclined portion 120, thereby driving the door body 30 to move downward in the vertical direction. 2 , and the guide center axis Q of the second hinge axis 42 moves to the second guide point Q 2 When , the abutting portion 210 moves to the second end of the second inclined portion 120;

[0207] In the door body 30 by G 1 During the process of closing to the closed state, the positioning center axis P of the first hinge axis 41 is oriented toward the first positioning point P 1 The guide center axis Q of the second hinge axis 42 is moved toward the first guide point Q 1 The abutment portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixed portion 100 facing the movable portion 200, and the abutment portion 210 moves to the side of the second inclined portion 120 away from the first inclined portion 110, and the door seal 5 located on the rear wall of the door body 30 moves toward the front end surface of the box body 10, so that the door body 30 can move to a closed state.

[0208] Furthermore, the door body 30 is formed by G 1 During the process of closing to the closed state, the door seal 5 can gradually contact the front end surface 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 is G 1 The process from closing to closing is smoother, further reducing the possibility of a gap between the door body 30 and the box body 10.

[0209] In some embodiments, in the third stage, the first hinge axis moves linearly along the linear groove section of the first track groove 50, and the door body 30 moves inwardly by a distance of ξ per unit angle of rotation. 1 In the first and second stages, the first hinge axis moves along the curved groove section of the first track groove 50, and the door body 30 moves inward by a distance of ξ per unit angle of rotation. 2 For example, ξ 1 >ξ 2 .

[0210] In the third stage, the first hinge axis quickly moves away from the door side wall 32, so that the door seal 5 and the front end surface of the box body 10 are quickly fitted, so that the door body 30 and the box body 10 can be connected by the door seal 5, reducing the possibility of a gap between the door body 30 and the box body 10. On the other hand, the arrangement of the track groove with the above track characteristics is more compact and the movement efficiency is higher.

[0211] For example, the essence of the inward movement of the refrigerator door body 30 is the outward movement of the first track groove 50. 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 conducive to reducing the difficulty of designing and arranging the track groove.

[0212] It should be noted that the first setting angle, the second setting angle and the third setting angle of the door body 30 can also be adjusted according to actual conditions. For example, the first setting angle of the door body 30 can also be set at the fourth angle G 4 and the second angle G 2 The positioning center axis P of the first hinge axis 41 moves to the fifth positioning point P 5 and the third positioning point P 3 and the guide center axis Q of the second hinge axis 42 moves to the fifth guide point Q 5 and the third guide point Q 3 When the door body 30 is at a first set angle.

[0213] For example, when the door body 30 is at the fourth angle G 4 When the positioning center axis P moves to the fifth positioning point P 5 , and the guide center axis Q moves to the fifth guide point Q 5 , the fifth positioning point P 5 Set as the inflection point of the first track groove 50, the fifth guide point Q 5 The inflection point of the second track groove 60 is set so that the door body 30 is at the fourth angle G 4 By setting the first setting angle to the fourth angle G 4 and the second angle G 2 Thus, the door body 30 can move in the vertical direction at a relatively flat position to improve the stability of the door body 30 during movement.

[0214] It is easy to understand that when the inflection point of the first track groove 50 and the inflection point of the second track groove 60 correspond to different angles of the door body 30, for example, when the door body 30 is at the fourth angle G 4 When the positioning center axis P moves to the inflection point of the first track groove 50, when the door body 30 is at the third angle G 3When the guide center axis Q moves to the inflection point of the second track groove 60, the first setting angle of the door body 30 can be set at the fourth angle G 4 and the third angle G 3 Alternatively, the first setting angle of the door body 30 can be set at the third angle G 3 and the second angle G 2 to ensure that the first set angle of the door body 30 is smaller than the angle corresponding to at least one of the inflection point of the first track groove 50 and the inflection point of the second track groove 60.

[0215] For example, the first track groove 50 has a first inflection point U, and the second track groove 60 has a second inflection point V. When the door body 30 rotates to close, the positioning center axis P is 6 Towards the first positioning point P 1 Move, guide the center axis Q from the sixth guide point Q 6 Towards the first guide point Q 1 When the door body 30 is rotated and closed to the first set angle, the positioning center axis P can be located at the first inflection point U and the first positioning point P 1 and / or, the guide center axis Q may be located between the second inflection point V and the second guide point Q. 1 To improve the stability of the door body 30 during the rotation and closing process.

[0216] Implementation Method 2

[0217] When the inflection point of the first track groove 50 and the inflection point of the second track groove 60 correspond to different angles of the door body 30, when the door body 30 rotates to close to the first set angle, the positioning center axis P passes through the first inflection point U, and the guide center 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 can be known, and 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.

[0218] In the first stage, the door body 30 is made of G max Rotate to close G 4 ;

[0219] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the straight groove section of the first track groove 50 is recorded as the first average speed v 1 ;

[0220] For example, the positioning center axis P is determined by the sixth positioning point P 6 The curved track segment along the first track line S moves away from the door side wall 32 and the door front wall 31, and the guide center axis Q is from the sixth guide point Q 6 The second track line K moves away from the door side wall 32 and the door front wall 31. For example, the positioning center axis P is located at the sixth positioning point P 6 Move along the curved track segment of the first track line S to the fifth positioning point P 5 ; The guiding center axis Q is from the sixth guiding point Q 6 Move along the second trajectory line K to the fifth guide point Q 5 .

[0221] In the door body 30 by G max Rotate to close G 4 During the process, the first hinge axis moves along the curved trajectory segment of the first trajectory line S in the direction away from the door side wall 32 and away from the door front wall 31. For every unit angle of rotation of the door body 30 to close, the speed at which the first hinge axis moves away from the door front wall 31 is approximately equal to the speed at which it moves away from the door side wall 32 (for example, the difference between the two speeds may be less than 1 mm).

[0222] Furthermore, in the first stage, the contact portion 210 always contacts the surface of the fixed member 100 facing the movable member 200 , is located on the surface of the first inclined portion 110 away from the second inclined portion 120 , and moves toward the first end of the first inclined portion 110 .

[0223] Furthermore, the first inflection point U of the first track groove 50 may be set at the sixth positioning point P 6 and the fifth anchor point P 5 in the first stage, the first hinge axis moves linearly along the straight groove section of the first trajectory groove 50, positioning the center axis P through the first inflection point U of the first trajectory groove 50, the second hinge axis 42 moves in the second trajectory groove 60.

[0224] In the second stage, the door body 30 is made of G 4 Rotate to close G 3 ;

[0225] In the second stage, the first hinge axis moves in a curve 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 recorded as the second average speed v 2 , and the relationship between the first average velocity and the second average velocity satisfies: ν 1 >ν 2 ;

[0226] Door 30 by G 4 Passing G 3 Close to G2 , the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S moves toward the direction close to the door side wall 32 and the door front wall 31, and the guide center axis Q is from the fifth guide point Q 5 Move along the second trajectory line K in a direction away from the door side wall 32 and close to the door front wall 31 .

[0227] For example, the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S passes through the fourth positioning point P 4 Move to the third positioning point P 3 ; The guiding center axis Q is from the fifth guiding point Q 5 Passing the fourth guide point Q along the second trajectory line K 4 Move to the third guide point Q 3 .

[0228] Furthermore, in the second stage, the first setting angle can be set at 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 at the fourth guide point Q 4 and the third guide point Q 3 For example, when the door body 30 is at a fourth angle G 4 When the positioning center axis P passes through the inflection point of the first track groove 50, the positioning center axis P passes through the fifth positioning point P 5 And towards the fourth positioning point P 4 The guide center axis Q of the second hinge axis 42 passes through the fifth guide point Q 5 And move to the fourth guide 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 toward the second end of the first inclined portion 110 ;

[0229] The second angle G 2 It can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge axis 41 moves to the third positioning point P 3 , and the guide center axis Q of the second hinge axis 42 moves to the third guide point Q 3 When the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; and, when the guide center axis Q is moved from the fourth guide point Q 4 Towards the third guide point Q 3 During the movement, the guide center axis Q passes through the second inflection point V.

[0230] When the door body 30 is at the third angle G 3When the guide center axis Q moves to the inflection point (i.e., the second inflection point V) of the second track groove 60, the abutting portion 210 abuts against the first inclined portion 110 and slides upwardly, 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. 4 Passing G 3 Close to G 2 When the contact portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110 , the door body 30 is driven to move upward in the vertical direction.

[0231] In the third stage, the door body 30 is made of G 2 Rotate to close;

[0232] 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 is moved from the third positioning point P 3 The linear track segment along the first track line S moves in a direction away from the door side wall 32; the guide center axis Q is guided by the third guide point Q 3 Move along the second trajectory line K in a direction away from the door side wall 32 and away from the door front wall 31 .

[0233] For example, the positioning center axis P is determined by the third positioning point P 3 The straight line segment along the first trajectory line S passes through the second positioning point P 2 Move to the first positioning point P 1 ; The guiding center axis Q is from the third guiding point Q 3 Passing the second guide point Q along the second trajectory line K 2 Move to the first guide point Q 1 .

[0234] Implementation Method 3

[0235] When the inflection point of the first track groove 50 and the inflection point of the second track groove 60 correspond to different angles of the door body 30, when the door body 30 rotates to close to the first set angle, the positioning center axis P does not move to the first inflection point U, and the guide 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 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 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.

[0236] In the first stage, the door body 30 is made of G max Rotate to close G 4 ;

[0237] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the straight groove section of the first track groove 50 is recorded as the first average speed v 1 ;

[0238] For example, the positioning center axis P is determined by the sixth positioning point P 6 The curved track segment along the first track line S moves away from the door side wall 32 and the door front wall 31, and the guide center axis Q is from the sixth guide point Q 6 The second track line K moves away from the door side wall 32 and the door front wall 31. For example, the positioning center axis P is located at the sixth positioning point P 6 Move along the curved track segment of the first track line S to the fifth positioning point P 5 ; The guiding center axis Q is from the sixth guiding point Q 6 Move along the second trajectory line K to the fifth guide point Q 5 .

[0239] In the door body 30 by G max Rotate to close G 4 During the process, the first hinge axis moves along the curved trajectory segment of the first trajectory line S in the direction away from the door side wall 32 and away from the door front wall 31. For every unit angle of rotation of the door body 30 to close, the speed at which the first hinge axis moves away from the door front wall 31 is approximately equal to the speed at which it moves away from the door side wall 32 (for example, the difference between the two speeds may be less than 1 mm).

[0240] Furthermore, in the first stage, the contact portion 210 always contacts the surface of the fixed member 100 facing the movable member 200 , is located on the surface of the first inclined portion 110 away from the second inclined portion 120 , and moves toward the first end of the first inclined portion 110 .

[0241] Furthermore, the second inflection point V of the second track groove 60 can be set at the sixth guide point Q 6 and the fifth guide point Q 5 In the first stage, the first hinge axis moves linearly along the straight groove section of the first trajectory groove 50, the positioning center axis P does not move to the first inflection point U of the first trajectory groove 50, the second hinge axis 42 moves in the second trajectory groove 60, and the guide center axis Q passes through the second inflection point V of the second trajectory groove 60.

[0242] In the second stage, the door body 30 is made of G 4 Rotate to close G 3 ;

[0243] In the second stage, the first hinge axis moves in a curve 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 recorded as the second average speed v 2 , and the relationship between the first average velocity and the second average velocity satisfies: ν 1 >ν 2 ;

[0244] Door 30 by G 4 Passing G 3 Close to G 2 , the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S moves toward the direction close to the door side wall 32 and the door front wall 31, and the guide center axis Q is from the fifth guide point Q 5 Move along the second trajectory line K in a direction away from the door side wall 32 and close to the door front wall 31 .

[0245] For example, the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S passes through the fourth positioning point P 4 Move to the third positioning point P 3 ; The guiding center axis Q is from the fifth guiding point Q 5 Passing the fourth guide point Q along the second trajectory line K 4 Move to the third guide point Q 3 .

[0246] Furthermore, in the second stage, the first setting angle can be set at 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 at the fourth positioning point P 4 and the third positioning point P 3 For example, when the door body 30 is at a fourth angle G 4 When , the guide center axis Q moves to the inflection point of the second track groove 60 (i.e., the second inflection point V);

[0247] Then, the positioning center axis P passes through the fifth positioning point P 5 And towards the fourth positioning point P 4 The guide center axis Q of the second hinge axis 42 passes through the fifth guide point Q 5 (i.e. the second inflection point V) and move to the fourth guide 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 toward the second end of the first inclined portion 110 ;

[0248] The second angle G 2It can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge axis 41 moves to the third positioning point P 3 , and the guide center axis Q of the second hinge axis 42 moves to the third guide point Q 3 When the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, the contact portion 210 is able to 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 center axis P is moved from the fourth positioning point P 4 Towards the third positioning point P 3 During the movement, the positioning center axis P passes through the first inflection point U.

[0249] When the door body 30 is at the third angle G 3 When the positioning center axis P passes through the inflection point (i.e., the first inflection point U) of the first track groove 50, the abutting portion 210 can abut against the first inclined portion 110 and slide upwardly, 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. 4 Passing G 3 Close to G 2 When the contact portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110 , the door body 30 is driven to move upward in the vertical direction.

[0250] In the third stage, the door body 30 is made of G 2 Rotate to close;

[0251] 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 is moved from the third positioning point P 3 The linear track segment along the first track line S moves in a direction away from the door side wall 32; the guide center axis Q is guided by the third guide point Q 3 Move along the second trajectory line K in a direction away from the door side wall 32 and away from the door front wall 31 .

[0252] For example, the positioning center axis P is determined by the third positioning point P 3 The straight line segment along the first trajectory line S passes through the second positioning point P 2 Move to the first positioning point P 1 ; The guiding center axis Q is from the third guiding point Q 3 Passing the second guide point Q along the second trajectory line K 2 Move to the first guide point Q 1 .

[0253] Implementation Method 4

[0254] When the inflection point of the first track groove 50 and the inflection point of the second track groove 60 correspond to the same angle of the door body 30, when the door body 30 rotates to close to the first set angle, the positioning center axis P passes through the first inflection point U, and the guide 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 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 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.

[0255] In the first stage, the door body 30 is made of G max Rotate to close G 4 ;

[0256] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the straight groove section of the first track groove 50 is recorded as the first average speed v 1 ;

[0257] For example, the positioning center axis P is determined by the sixth positioning point P 6 The curved track segment along the first track line S moves away from the door side wall 32 and the door front wall 31, and the guide center axis Q is from the sixth guide point Q 6 The second track line K moves away from the door side wall 32 and the door front wall 31. For example, the positioning center axis P is located at the sixth positioning point P 6 Move along the curved track segment of the first track line S to the fifth positioning point P 5 ; The guiding center axis Q is from the sixth guiding point Q 6 Move along the second trajectory line K to the fifth guide point Q 5 .

[0258] In the door body 30 by G max Rotate to close G 4 During the process, the first hinge axis moves along the curved trajectory segment of the first trajectory line S in the direction away from the door side wall 32 and away from the door front wall 31. For every unit angle of rotation of the door body 30 to close, the speed at which the first hinge axis moves away from the door front wall 31 is approximately equal to the speed at which it moves away from the door side wall 32 (for example, the difference between the two speeds may be less than 1 mm).

[0259] In the first stage, the contact portion 210 always contacts the surface of the fixing member 100 facing the movable member 200 , is located on the surface of the first inclined portion 110 away from the second inclined portion 120 , and moves toward the first end of the first inclined portion 110 .

[0260] Furthermore, the first inflection point U of the first track groove 50 may be set at the sixth positioning point P 6 and the fifth anchor point P 5 and the second inflection point V of the second track groove 60 can be set at the sixth guide point Q 6 and the fifth guide point Q 5 in the first stage, the first hinge axis moves linearly along the straight groove section of the first trajectory groove 50, the positioning center axis P passes through the first inflection point U of the first trajectory groove 50, the second hinge axis 42 moves in the second trajectory groove 60, and the guide center axis Q passes through the second inflection point V of the second trajectory groove 60.

[0261] In the second stage, the door body 30 is made of G 4 Rotate to close G 3 ;

[0262] In the second stage, the first hinge axis moves in a curve 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 recorded as the second average speed v 2 , and the relationship between the first average velocity and the second average velocity satisfies: ν 1 >ν 2 ;

[0263] Door 30 by G 4 Passing G 3 Close to G 2 , the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S moves toward the direction close to the door side wall 32 and the door front wall 31, and the guide center axis Q is from the fifth guide point Q 5 Move along the second trajectory line K in a direction away from the door side wall 32 and close to the door front wall 31 .

[0264] For example, the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S passes through the fourth positioning point P 4 Move to the third positioning point P 3 ; The guiding center axis Q is from the fifth guiding point Q 5 Passing the fourth guide point Q along the second trajectory line K 4 Move to the third guide point Q 3 .

[0265] Furthermore, in the second stage, the first setting angle can be set at the fourth angle G4 and the third angle G 3 For example, when the door body 30 is at a fourth angle G 4 When the positioning center axis P moves to the fifth positioning point P 5 ;

[0266] Then, the positioning center axis P passes through the fifth positioning point P 5 And towards the fourth positioning point P 4 The guide center axis Q of the second hinge axis 42 passes through the fifth guide point Q 5 And move to the fourth guide 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 toward the second end of the first inclined portion 110 ;

[0267] The second angle G 2 It can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge axis 41 moves to the third positioning point P 3 , and the guide center axis Q of the second hinge axis 42 moves to the third guide point Q 3 When the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110;

[0268] When the door body 30 is at the third angle G 3 When the door body 30 is moved by G 4 Passing G 3 Close to G 2 When the contact portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110 , the door body 30 is driven to move upward in the vertical direction.

[0269] In the third stage, the door body 30 is made of G 2 Rotate to close;

[0270] 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 is moved from the third positioning point P 3 The linear track segment along the first track line S moves in a direction away from the door side wall 32; the guide center axis Q is guided by the third guide point Q 3 Move along the second trajectory line K in a direction away from the door side wall 32 and away from the door front wall 31 .

[0271] For example, the positioning center axis P is determined by the third positioning point P 3 The straight line segment along the first trajectory line S passes through the second positioning point P2 Move to the first positioning point P 1 ; The guiding center axis Q is from the third guiding point Q 3 Passing the second guide point Q along the second trajectory line K 2 Move to the first guide point Q 1 .

[0272] Implementation Method 5

[0273] When the inflection point of the first track groove 50 and the inflection point of the second track groove 60 correspond to different angles of the door body 30, when the door body 30 rotates to close to the first set angle, the positioning center axis P passes through the first inflection point U, and the guide 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 axes relative to the two track grooves can be known, and 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.

[0274] In the first stage, the door body 30 is made of G max Rotate to close G 4 ;

[0275] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the straight groove section of the first track groove 50 is recorded as the first average speed v 1 ;

[0276] For example, the positioning center axis P is determined by the sixth positioning point P 6 The curved track segment along the first track line S moves away from the door side wall 32 and the door front wall 31, and the guide center axis Q is from the sixth guide point Q 6 The second track line K moves away from the door side wall 32 and the door front wall 31. For example, the positioning center axis P is located at the sixth positioning point P 6 Move along the curved track segment of the first track line S to the fifth positioning point P 5 ; The guiding center axis Q is from the sixth guiding point Q 6 Move along the second trajectory line K to the fifth guide point Q 5 .

[0277] In the door body 30 by G max Rotate to close G 4During the process, the first hinge axis moves along the curved trajectory segment of the first trajectory line S in the direction away from the door side wall 32 and away from the door front wall 31. For every unit angle of rotation of the door body 30 to close, the speed at which the first hinge axis moves away from the door front wall 31 is approximately equal to the speed at which it moves away from the door side wall 32 (for example, the difference between the two speeds may be less than 1 mm).

[0278] Furthermore, in the first stage, the contact portion 210 always contacts the surface of the fixed member 100 facing the movable member 200 , is located on the surface of the first inclined portion 110 away from the second inclined portion 120 , and moves toward the first end of the first inclined portion 110 .

[0279] Furthermore, the first inflection point U of the first track groove 50 may be set at the sixth positioning point P 6 and the fifth positioning point P 5 in the first stage, the first hinge axis moves linearly along the straight groove section of the first trajectory groove 50, positioning the center axis P through the first inflection point U of the first trajectory groove 50, the second hinge axis 42 moves in the second trajectory groove 60.

[0280] In the second stage, the door body 30 is made of G 4 Rotate to close G 3 ;

[0281] In the second stage, the first hinge axis moves in a curve 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 recorded as the second average speed v 2 , and the relationship between the first average velocity and the second average velocity satisfies: ν 1 >ν 2 ;

[0282] Door 30 by G 4 Passing G 3 Close to G 2 , the center axis P is located by the fifth positioning point P 5 The curved track segment along the first track line S moves toward the direction close to the door side wall 32 and the door front wall 31, and the guide center axis Q is from the fifth guide point Q 5 Move along the second trajectory line K in a direction away from the door side wall 32 and close to the door front wall 31 .

[0283] For example, the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S passes through the fourth positioning point P 4 Move to the third positioning point P 3 ; The guiding center axis Q is from the fifth guiding point Q 5 Passing the fourth guide point Q along the second trajectory line K 4 Move to the third guide point Q3 .

[0284] Furthermore, in the second stage, the first setting angle can be set at the fourth angle G 4 The second inflection point V of the second track groove 60 can be set at the fifth guide point Q 5 For example, when the door body 30 is at the fourth angle G 4 When the positioning center axis P passes through the inflection point of the first track groove 50 (i.e., the first inflection point U), the guide center axis Q moves to the inflection point of the second track groove 60 (i.e., the second inflection point V);

[0285] Then, the positioning center axis P passes through the fifth positioning point P 5 And towards the fourth positioning point P 4 The guide center axis Q of the second hinge axis 42 passes through the fifth guide point Q 5 And move to the fourth guide 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 toward the second end of the first inclined portion 110 ;

[0286] The second angle G 2 It can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge axis 41 moves to the third positioning point P 3 , and the guide center axis Q of the second hinge axis 42 moves to the third guide point Q 3 When the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; and, when the guide center axis Q is moved from the fourth guide point Q 4 Towards the third guide point Q 3 During the movement, the guide center axis Q passes through the second inflection point V.

[0287] When the door body 30 is at the third angle G 3 When the door body 30 is moved by G 4 Passing G 3 Close to G 2 When the contact portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110 , the door body 30 is driven to move upward in the vertical direction.

[0288] In the third stage, the door body 30 is made of G 2 Rotate to close;

[0289] 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 is moved from the third positioning point P 3 The linear track segment along the first track line S moves in a direction away from the door side wall 32; the guide center axis Q is guided by the third guide point Q 3 Move along the second trajectory line K in a direction away from the door side wall 32 and away from the door front wall 31 .

[0290] For example, the positioning center axis P is determined by the third positioning point P 3 The straight line segment along the first trajectory line S passes through the second positioning point P 2 Move to the first positioning point P 1 ; The guiding center axis Q is from the third guiding point Q 3 Passing the second guide point Q along the second trajectory line K 2 Move to the first guide point Q 1 .

[0291] Implementation Method 6

[0292] When the inflection point of the first track groove 50 and the inflection point of the second track groove 60 correspond to different angles of the door body 30, when the door body 30 rotates to close to the first set angle, the positioning center axis P moves to the first inflection point U, and the guide 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 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 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.

[0293] In the first stage, the door body 30 is made of G max Rotate to close G 4 ;

[0294] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the straight groove section of the first track groove 50 is recorded as the first average speed v 1 ;

[0295] For example, the positioning center axis P is determined by the sixth positioning point P 6 The curved track segment along the first track line S moves away from the door side wall 32 and the door front wall 31, and the guide center axis Q is from the sixth guide point Q 6 The second track line K moves away from the door side wall 32 and the door front wall 31. For example, the positioning center axis P is located at 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 center axis Q is from the sixth guiding point Q 6 Move along the second trajectory line K to the fifth guide point Q 5 .

[0296] In the door body 30 by G max Rotate to close G 4 During the process, the first hinge axis moves along the curved trajectory segment of the first trajectory line S in the direction away from the door side wall 32 and away from the door front wall 31. For every unit angle of rotation of the door body 30 to close, the speed at which the first hinge axis moves away from the door front wall 31 is approximately equal to the speed at which it moves away from the door side wall 32 (for example, the difference between the two speeds may be less than 1 mm).

[0297] Furthermore, in the first stage, the contact portion 210 always contacts the surface of the fixed member 100 facing the movable member 200 , is located on the surface of the first inclined portion 110 away from the second inclined portion 120 , and moves toward the first end of the first inclined portion 110 .

[0298] Furthermore, the second inflection point V of the second track groove 60 can be set at the sixth guide point Q 6 and the fifth guide point Q 5 In the first stage, the first hinge axis moves linearly along the straight groove section of the first trajectory groove 50, the positioning center axis P does not move to the first inflection point U of the first trajectory groove 50, the second hinge axis 42 moves in the second trajectory groove 60, and the guide center axis Q passes through the second inflection point V of the second trajectory groove 60.

[0299] In the second stage, the door body 30 is made of G 4 Rotate to close G 3 ;

[0300] In the second stage, the first hinge axis moves in a curve 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 recorded as the second average speed v 2 , and the relationship between the first average velocity and the second average velocity satisfies: ν 1 >ν 2 ;

[0301] Door 30 by G 4 Passing G 3 Close to G 2 , the center axis P is located by the fifth positioning point P 5 The curved track segment along the first track line S moves toward the direction close to the door side wall 32 and the door front wall 31, and the guide center axis Q is from the fifth guide point Q 5Move along the second trajectory line K in a direction away from the door side wall 32 and close to the door front wall 31 .

[0302] For example, the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S passes through the fourth positioning point P 4 Move to the third positioning point P 3 ; The guiding center axis Q is from the fifth guiding point Q 5 Passing the fourth guide point Q along the second trajectory line K 4 Move to the third guide point Q 3 .

[0303] Furthermore, in the second stage, the first setting 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 When , the guide center axis Q moves to the inflection point of the second track groove 60 (i.e., the second inflection point V);

[0304] Then, the positioning center axis P passes through the fifth positioning point P 5 And towards the fourth positioning point P 4 The guide center axis Q of the second hinge axis 42 passes through the fifth guide point Q 5 And move to the fourth guide 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 toward the second end of the first inclined portion 110 ;

[0305] The second angle G 2 It can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge axis 41 moves to the third positioning point P 3 , and the guide center axis Q of the second hinge axis 42 moves to the third guide point Q 3 When the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, the contact portion 210 is able to 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 center axis P is moved from the fourth positioning point P 4 Towards the third positioning point P 3 During the movement, the positioning center axis P passes through the first inflection point U.

[0306] When the door body 30 is at the third angle G 3 When the positioning center 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 upwardly, 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. 4 Passing G3 Close to G 2 When the contact portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110 , the door body 30 is driven to move upward in the vertical direction.

[0307] In the third stage, the door body 30 is made of G 2 Rotate to close;

[0308] 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 is moved from the third positioning point P 3 The linear track segment along the first track line S moves in a direction away from the door side wall 32; the guide center axis Q is guided by the third guide point Q 3 Move along the second trajectory line K in a direction away from the door side wall 32 and away from the door front wall 31 .

[0309] For example, the positioning center axis P is determined by the third positioning point P 3 The straight line segment along the first trajectory line S passes through the second positioning point P 2 Move to the first positioning point P 1 ; The guiding center axis Q is from the third guiding point Q 3 Passing the second guide point Q along the second trajectory line K 2 Move to the first guide point Q 1 .

[0310] Implementation Method 7

[0311] When the inflection point of the first track groove 50 and the inflection point of the second track groove 60 correspond to different angles of the door body 30, when the door body 30 rotates to close to the first set angle, the positioning center axis P moves to the first inflection point U, and the guide center 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 can be known, and 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.

[0312] In the first stage, the door body 30 is made of G max Rotate to close G 4 ;

[0313] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the straight groove section of the first track groove 50 is recorded as the first average speed v 1 ;

[0314] For example, the positioning center axis P is determined by the sixth positioning point P 6 The curved track segment along the first track line S moves away from the door side wall 32 and the door front wall 31, and the guide center axis Q is from the sixth guide point Q 6 The second track line K moves away from the door side wall 32 and the door front wall 31. For example, the positioning center axis P is located at the sixth positioning point P 6 Move along the curved track segment of the first track line S to the fifth positioning point P 5 ; The guiding center axis Q is from the sixth guiding point Q 6 Move along the second trajectory line K to the fifth guide point Q 5 .

[0315] In the door body 30 by G max Rotate to close G 4 During the process, the first hinge axis moves along the curved trajectory segment of the first trajectory line S in the direction away from the door side wall 32 and away from the door front wall 31. For every unit angle of rotation of the door body 30 to close, the speed at which the first hinge axis moves away from the door front wall 31 is approximately equal to the speed at which it moves away from the door side wall 32 (for example, the difference between the two speeds may be less than 1 mm).

[0316] In the first stage, the contact portion 210 always contacts the surface of the fixing member 100 facing the movable member 200 , is located on the surface of the first inclined portion 110 away from the second inclined portion 120 , and moves toward the first end of the first inclined portion 110 .

[0317] Furthermore, 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 , and the second hinge shaft 42 moves in the second track groove 60 .

[0318] In the second stage, the door body 30 is made of G 4 Rotate to close G 3 ;

[0319] In the second stage, the first hinge axis moves in a curve 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 recorded as the second average speed v 2 , and the relationship between the first average velocity and the second average velocity satisfies: ν 1 >ν 2 ;

[0320] Door 30 by G 4 Passing G 3 Close to G 2 , the center axis P is located by the fifth positioning point P 5The curved track segment along the first track line S moves toward the direction close to the door side wall 32 and the door front wall 31, and the guide center axis Q is from the fifth guide point Q 5 Move along the second trajectory line K in a direction away from the door side wall 32 and close to the door front wall 31 .

[0321] For example, the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S passes through the fourth positioning point P 4 Move to the third positioning point P 3 ; The guiding center axis Q is from the fifth guiding point Q 5 Passing the fourth guide point Q along the second trajectory line K 4 Move to the third guide point Q 3 .

[0322] Furthermore, in the second stage, the first setting 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 The second inflection point V of the second track groove 60 can be set at the fifth guide point Q 5 and the fourth guide point Q 4 For example, when the door body 30 is at the fourth angle G 4 When , the positioning center axis P moves to the inflection point of the first track groove 50 (i.e., the first inflection point U), and the guide center axis Q does not move to the inflection point of the second track groove 60 (i.e., the second inflection point V);

[0323] Then, the positioning center axis P passes through the fifth positioning point P 5 And towards the fourth positioning point P 4 The guide center axis Q of the second hinge axis 42 passes through the fifth guide point Q 5 And move to the fourth guide 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 toward the second end of the first inclined portion 110 ;

[0324] The second angle G 2 It can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge axis 41 moves to the third positioning point P 3 , and the guide center axis Q of the second hinge axis 42 moves to the third guide point Q 3 When the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110; and, when the guide center axis Q is moved from the fourth guide point Q 4 Towards the third guide point Q 3 During the movement, the guide center axis Q passes through the second inflection point V.

[0325] When the door body 30 is at the third angle G 3 When the door body 30 is moved by G 4 Passing G 3 Close to G 2 When the contact portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110 , the door body 30 is driven to move upward in the vertical direction.

[0326] In the third stage, the door body 30 is made of G 2 Rotate to close;

[0327] 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 is moved from the third positioning point P 3 The linear track segment along the first track line S moves in a direction away from the door side wall 32; the guide center axis Q is guided by the third guide point Q 3 Move along the second trajectory line K in a direction away from the door side wall 32 and away from the door front wall 31 .

[0328] For example, the positioning center axis P is determined by the third positioning point P 3 The straight line segment along the first trajectory line S passes through the second positioning point P 2 Move to the first positioning point P 1 ; The guiding center axis Q is from the third guiding point Q 3 Passing the second guide point Q along the second trajectory line K 2 Move to the first guide point Q 1 .

[0329] Implementation Method 8

[0330] When the inflection point of the first track groove 50 and the inflection point of the second track groove 60 correspond to different angles of the door body 30, when the door body 30 rotates to close to the first set angle, the positioning center axis P does not move to the first inflection point U, and the guide 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 axes relative to the two track grooves can be known, and 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.

[0331] In the first stage, the door body 30 is made of G maxRotate to close G 4 ;

[0332] In the first stage, the first hinge axis moves linearly along the straight groove section of the first track groove 50, and the average movement speed of the first hinge axis relative to the straight groove section of the first track groove 50 is recorded as the first average speed v 1 ;

[0333] For example, the positioning center axis P is determined by the sixth positioning point P 6 The curved track segment along the first track line S moves away from the door side wall 32 and the door front wall 31, and the guide center axis Q is from the sixth guide point Q 6 The second track line K moves away from the door side wall 32 and the door front wall 31. For example, the positioning center axis P is located at the sixth positioning point P 6 Move along the curved track segment of the first track line S to the fifth positioning point P 5 ; The guiding center axis Q is from the sixth guiding point Q 6 Move along the second trajectory line K to the fifth guide point Q 5 .

[0334] In the door body 30 by G max Rotate to close G 4 During the process, the first hinge axis moves along the curved trajectory segment of the first trajectory line S in the direction away from the door side wall 32 and away from the door front wall 31. For every unit angle of rotation of the door body 30 to close, the speed at which the first hinge axis moves away from the door front wall 31 is approximately equal to the speed at which it moves away from the door side wall 32 (for example, the difference between the two speeds may be less than 1 mm).

[0335] In the first stage, the contact portion 210 always contacts the surface of the fixing member 100 facing the movable member 200 , is located on the surface of the first inclined portion 110 away from the second inclined portion 120 , and moves toward the first end of the first inclined portion 110 .

[0336] Moreover, in the first stage, the first hinge axis moves linearly along the straight groove section of the first trajectory groove 50, the positioning center axis P does not move to the first inflection point U of the first trajectory groove 50, the second hinge axis 42 moves in the second trajectory groove 60, and the guide center axis Q passes through the second inflection point V of the second trajectory groove 60.

[0337] In the second stage, the door body 30 is made of G 4 Rotate to close G 3 ;

[0338] In the second stage, the first hinge axis moves in a curve 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 recorded as the second average speed v 2, and the relationship between the first average velocity and the second average velocity satisfies: ν 1 >ν 2 ;

[0339] Door 30 by G 4 Passing G 3 Close to G 2 , the center axis P is located by the fifth positioning point P 5 The curved track segment along the first track line S moves toward the direction close to the door side wall 32 and the door front wall 31, and the guide center axis Q is from the fifth guide point Q 5 Move along the second trajectory line K in a direction away from the door side wall 32 and close to the door front wall 31 .

[0340] For example, the positioning center axis P is determined by the fifth positioning point P 5 The curved track segment along the first track line S passes through the fourth positioning point P 4 Move to the third positioning point P 3 ; The guiding center axis Q is from the fifth guiding point Q 5 Passing the fourth guide point Q along the second trajectory line K 4 Move to the third guide point Q 3 .

[0341] Furthermore, in the second stage, the first setting 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 and the second inflection point V of the second track groove 60 can be set at the fifth guide point Q 5 For example, when the door body 30 is at the fourth angle G 4 When , the guide center axis Q moves to the inflection point of the second track groove 60 (i.e., the second inflection point V), and the positioning center axis P does not move to the inflection point of the first track groove 50 (i.e., the first inflection point U);

[0342] Then, the positioning center axis P passes through the fifth positioning point P 5 And towards the fourth positioning point P 4 The positioning center axis P passes through the first inflection point U, and the guide center axis Q of the second hinge axis 42 passes through the fifth guide point Q 5 And move to the fourth guide 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 toward the second end of the first inclined portion 110 ;

[0343] The second angle G 2 It can be reused to form a second set angle. For example, when the positioning center axis P of the first hinge axis 41 moves to the third positioning point P3 , and the guide center axis Q of the second hinge axis 42 moves to the third guide point Q 3 When the contact portion 210 is moved from the first end of the first inclined portion 110 to the second end of the first inclined portion 110, the contact portion 210 is able to 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 center axis P is moved from the fourth positioning point P 4 Towards the third positioning point P 3 During the movement, the positioning center axis P passes through the first inflection point U.

[0344] When the door body 30 is at the third angle G 3 When the positioning center 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 upwardly, 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. 4 Passing G 3 Close to G 2 When the contact portion 210 moves along the first end of the first inclined portion 110 to the second end of the first inclined portion 110 , the door body 30 is driven to move upward in the vertical direction.

[0345] In the third stage, the door body 30 is made of G 2 Rotate to close;

[0346] 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 is moved from the third positioning point P 3 The linear track segment along the first track line S moves in a direction away from the door side wall 32; the guide center axis Q is guided by the third guide point Q 3 Move along the second trajectory line K in a direction away from the door side wall 32 and away from the door front wall 31 .

[0347] For example, the positioning center axis P is determined by the third positioning point P 3 The straight line segment along the first trajectory line S passes through the second positioning point P 2 Move to the first positioning point P 1 ; The guiding center axis Q is from the third guiding point Q 3 Passing the second guide point Q along the second trajectory line K 2 Move to the first guide point Q 1 .

[0348] It is easy to understand that, taking the movement process of the positioning center axis P in the first trajectory groove 50 as an example, “not moved to” means that the positioning center axis P is before a certain point in the first trajectory groove 50, “moved to” means that the positioning center axis P is located at a certain point in the first trajectory groove 50, and “passed by” means that the positioning center axis P is after a certain point in the first trajectory groove 50.

[0349] During the process of the door body 30 rotating and closing, when the positioning center axis P moves to the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 is located at the first set angle. For example, as described in the first embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P moves to the inflection point of the first track groove 50 , and the guide center axis Q moves to the inflection point of the second track groove 60 .

[0350] Alternatively, during the process of the door body 30 rotating and closing, when the positioning center axis P moves to the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 has not rotated to the first set angle, when the positioning center axis P passes the inflection point of the first track groove 50, and the guide 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 the second embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is not rotated to the first setting angle, the positioning center axis P moves to the inflection point of the first track groove 50. 3 When , the guide center axis Q moves to the inflection point of the second track groove 60;

[0351] Alternatively, during the process of the door body 30 rotating and closing, when the positioning center axis P has not moved to the inflection point of the first track groove 50 and the guide center axis Q has moved 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 moves to the inflection point of the first track groove 50 and the guide center axis Q passes the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in the third embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is not rotated to the first setting angle, the guide center axis Q moves to the inflection point of the second track groove 60. 3 When , the positioning center axis P moves to the inflection point of the first track groove 50;

[0352] Alternatively, during the process of the door body 30 rotating and closing, while the positioning center axis P moves to the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 has not rotated to the first set angle; after the positioning center axis P passes the inflection point of the first track groove 50 and the guide center axis Q passes the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in the fourth embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is not rotated to the first set angle, the positioning center axis P passes through the inflection point of the first track groove 50 , and the guide center axis Q passes through 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 center axis P passes through the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 is located at the first set angle. For example, as described in the fifth embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P passes through the inflection point of the first track groove 50 , and the guide center axis Q moves to the inflection point of the second track groove 60 .

[0354] Alternatively, during the process of the door body 30 rotating and closing, after the positioning center axis P moves to the inflection point of the first track groove 50 and the guide center axis Q moves to the inflection point of the second track groove 60, the door body 30 is located at the first set angle. For example, as described in the sixth embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P moves to the inflection point of the first track groove 50 , and the guide center 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, before the positioning center axis P moves to the inflection point of the first track groove 50 and the guide center axis Q moves to the inflection point of the second track groove 60, the door body 30 is located at the first set angle. For example, as described in Embodiment 7, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P moves to the inflection point of the first track groove 50 , and the guide center axis Q does not move to the inflection point of the second track groove 60 .

[0356] Alternatively, during the process of the door body 30 rotating and closing, before the positioning center axis P moves to the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 is located at the first set angle. For example, as described in the sixth embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P does not move to the inflection point of the first track groove 50 , and the guide center axis Q moves to the inflection point of the second track groove 60 .

[0357] It should be noted that when the first trajectory groove 50 is provided with a first inflection point U and the second trajectory groove 60 is not provided with a second inflection point V, the gravity self-closing structure is configured as follows: when the door body 30 is rotated to a first set angle, the positioning center axis P moves to the first inflection point U, or the positioning center axis P passes through the first inflection point U.

[0358] 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 as follows: when the door body 30 rotates to a first set angle, the guide center axis Q moves to the second inflection point V, or the guide center axis Q passes through the second inflection point V.

[0359] 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 1 and Embodiment 4, the first track groove 50 in Embodiment 1 can be arranged the same as the first track groove 50 in Embodiment 4, the second track groove 60 in Embodiment 1 can be arranged the same as the second track groove 60 in Embodiment 4, and the first end of the first inclined portion 110 in Embodiment 4 contacts the abutment portion 210 first relative to the first end of the first inclined portion 110 in Embodiment 1.

[0360] In some embodiments, the second end of the first inclined portion 110 can be directly connected to the first end of the second inclined portion 120, and 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 are arranged to form 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 abutment portion 210 can move along the moving path during the process of rotating the door body 30 to open or close.

[0361] The inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120 can be set to have a smooth transition, that is, an arc surface can 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 movement process of the abutting portion 210 more convenient.

[0362] For example, 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 smaller, the user's sense of frustration during the door closing process is smaller, and 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 can be set to be greater than or equal to 1 mm and less than or equal to 5 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 surface of the fixing member 100 can 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, and 4.5 mm-5 mm to reduce the user's sense of frustration during the door closing process.

[0363] The length of the abutting portion 210 can 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 can 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, and 4.5 mm-5 mm to reduce the user's sense of frustration during the door closing process.

[0364] The smaller the inclination angle of the first inclined portion 110 is, the less frustration the user feels during the door closing process. The inclination angle of the first inclined portion 110 can be set to be less than or equal to 40 degrees. For example, the inclination angle of the first inclined portion 110 can be set to one of 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees and 40 degrees to reduce the frustration the user feels during the door closing process.

[0365] Furthermore, 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.

[0366] It is easy to understand that, in 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, and 2 mm-2.5 mm, and the smaller the distance between the lower end of the door body 30 and the top surface of the fixing member 100, the more compact the overall structure of the gravity self-closing structure.

[0367] Reference Fig.36 and Fig.37 In some embodiments, the abutting portion 210 may be provided with a first abutting surface 211 and a second abutting surface 212 connected to each other, and the first abutting surface 211 and the second abutting surface 212 are both inclined relative to the vertical direction. When the door body 30 is in a closed state (i.e. When the door body 30 is in the open state (for example, When the contact portion 210 is in contact with the fixed member 100, the bottom of the contact portion 210 may contact the surface of the fixed member 100 facing the movable member 200, and the contact portion 210 is located on a side of the first inclined portion 110 away from the second inclined portion 120.

[0368] The first abutting surface 211 and the second abutting surface 212 are used to abut against the inclined surface of the first inclined portion 110 , and the second abutting surface 212 is used to abut against the inclined surface of the second inclined portion 120 . The bottom end of the first abutting surface 211 is connected to the bottom end of the second abutting surface 212 .

[0369] During the process of rotating and opening the door body 30, the bottom of the abutment 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 abutment surface 212 can move along the second end of the second inclined portion 120 to the first end of the second inclined portion 120, and the movable member 200 drives the door body 30 to move upward through the abutment portion 210; and the bottom of the abutment 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 abutment surface 211 can move along the second end of the first inclined portion 110 to the first end of the first inclined portion 110, and the movable member 200 drives the door body 30 to move downward through the abutment portion 210, so that the abutment 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 abutment 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.

[0370] During the process of rotating and closing the door body 30, the bottom of the abutment 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 abutment surface 211 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 abutment portion 210; and the bottom of the abutment 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 abutment surface 212 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 abutment portion 210, so that the abutment 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 abutment 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.

[0371] For example, in a vertical plane, the first abutment surface 211 can be arranged parallel to the inclined surface of the first inclined portion 110, and the second abutment surface 212 can be arranged parallel to the inclined surface of the second inclined portion 120, so as to increase the fitting area between the first abutment surface 211 and the first inclined portion 110 and the fitting area between the second abutment surface 212 and the second inclined portion 120, thereby improving the stability of the bottom end of the abutment portion 210 moving along the moving path during the rotation and closing of the door body 30.

[0372] When the bottom of the abutment 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 abutment surface 211 is in contact with the first inclined portion 110. When the abutment portion 210 moves from the first end of the first inclined portion 110 toward the second end of the first inclined portion 110, the area in which the first abutment surface 211 is in contact with the first inclined portion 110 gradually decreases. When the abutment portion 210 moves to the second end of the first inclined portion 110, the first abutment surface 211 is completely separated from the first inclined portion 110, and the bottom of the abutment portion 210 abuts against the arc surface.

[0373] 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 toward the second end of the second inclined portion 120, the area of ​​the second abutting surface 212 fitting against the second inclined portion 120 gradually increases. When the abutting portion 210 moves to the second end of the second inclined portion 120, the fitting 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 fixed member 100 facing the movable member 200.

[0374] 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 smaller than the inclination angle of the second inclined portion 120, the inclination angle of the first abutting surface 211 can be correspondingly smaller than the inclination angle of the second inclined portion 120, so as 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.

[0375] For example, the inclination angle of the second inclined portion 120 may also be greater than the inclination angle of the first inclined portion 110. When the door body 30 is in the closed state (ie When the inclination angle of the second inclined portion 120 is larger, 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 connection between the door body 30 and the box body 10, thereby improving the sealing of the closed loading and unloading port of the door body 30 by adjusting the inclination angle of the second inclined portion 120.

[0376] In some embodiments, the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120 can be set in the same vertical plane as the moving path, that is, the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120 are both facing the vertical direction; or, the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120 can also face the first hinge axis 41 and the second hinge axis 42. When the movable part 200 rotates relative to the fixed part 100 through the first hinge axis 41 and the second hinge axis 42, the abutment portion 210 can abut against the surfaces of the first inclined portion 110 and the second inclined portion 120 facing the first hinge axis 41 and the second hinge axis 42.

[0377] For example, on the surface of the fixed part 100 facing the movable part 200, the first inclined portion 110 and the second inclined portion 120 integrally form a raised structure, the first surface of the raised structure faces the first hinge axis 41 and the second hinge axis 42, the second surface of the raised structure turns away from the first hinge axis 41 and the second hinge axis 42, the first surface of the raised structure forms an inclined surface of the first inclined portion 110 and an inclined surface of the second inclined portion 120 connected to each other, and the first surface of the raised structure also forms an arc surface.

[0378] On the surface of the movable part 200 facing the fixed part 100, the first surface of the abutment portion 210 faces the first track groove 50 and the second track groove 60, and the second surface of the abutment portion 210 turns away from the first track groove 50 and the second track groove 60, and the second surface of the abutment portion 210 forms a first abutment surface 211 and a second abutment surface 212 connected to each other; when the movable part 200 rotates relative to the fixed part 100 through the first hinge axis 41 and the second hinge axis 42, the abutment portion 210 is arranged on the first surface of the raised structure.

[0379] Reference Figure 36-Figure 38 In some embodiments, the abutment portion 210 may be provided with a contact piece 213, which may be configured as a ball or a roller, etc., so as to reduce the friction between the abutment portion 210 and the first inclined portion 110, and between the abutment portion 210 and the second inclined portion 120 through the contact piece 213, so that the process of the door body 30 moving in the vertical direction is smoother.

[0380] By way of example, the number of contact members 213 can be set to one or more. When the number of contact members 213 is set to one, the contact member 213 can be set at one of the first abutting surface 211, the second abutting surface 212 and other positions of the abutting portion 210; or, the number of contact members 213 can also be set to multiple, multiple contact members 213 can be distributed at different positions of the abutting portion 210, and multiple contact members 213 can be used to form at least one of the first abutting surface 211 and the second abutting surface 212.

[0381] For example, the number of contact members 213 can be set to one, the contact member 213 is set to a roller, the roller can be set on the abutment portion 210, the rotation axis of the roller can be parallel to the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120, and the first part of the circumferential surface of the roller forms the first abutment surface 211, the second part of the circumferential surface of the roller forms the bottom of the abutment portion 210, and the third part of the circumferential surface of the roller forms the second abutment surface 212.

[0382] For example, the abutment portion 210 is arranged in a receiving groove, which accommodates part of the roller, and at least part of the roller extends out of the receiving groove so that at least part of the circumference of the roller is exposed, and the part of the circumference located outside the receiving groove is used to form a first abutment surface 211, a bottom of the abutment portion 210 and a second abutment surface 212 that are connected.

[0383] During the process of rotating and closing the door body 30, the second portion of the roller surface can move from the surface of the fixing member 100 to the first end of the first inclined portion 110, the first portion of the roller surface rolls in contact with the inclined surface of the first inclined portion 110, and the remaining portion of the first abutting surface 211 slides in contact with 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, and then, the third portion of the roller surface rolls in contact with the inclined surface of the second inclined portion 120, and the remaining portion of the second abutting surface 212 slides in contact with 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 reducing the friction between the abutting portion 210 and the fixing member 100 through the contact member 213.

[0384] Alternatively, when the number of contact members 213 can be set to multiple, the first part of the contact members 213 among the multiple contact members 213 can be arranged in 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, and the first part of the contact members 213 is used to abut against the inclined surface of the first inclined portion 110 to reduce the friction between the abutting portion 210 and the first inclined portion 110 when the door body 30 moves upward.

[0385] The second part of the contact members 213 among the multiple contact members 213 can be arranged in 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 a second abutting surface 212 of the abutting portion 210. The second part of the contact members 213 is used to abut against the inclined surface of the second inclined portion 120 to reduce the friction between the abutting portion 210 and the second inclined portion 120 when the door body 30 moves downward.

[0386] It is easy to understand that during the process of rotating and closing the door body 30, the abutment portion 210 rolls in contact with the inclined surface of the first inclined portion 110 through the first part of the contact piece 213, and rolls in contact with the inclined surface of the second inclined portion 120 through the second part of the contact piece 213, so that the abutment portion 210 can roll in contact with the first inclined portion 110 and the second inclined portion 120, thereby reducing the friction between the abutment portion 210 and the first inclined portion 110 and the second inclined portion 120 when the door body 30 moves in the vertical direction.

[0387] By way of example, the number of contact members 213 is set to be multiple, and the contact members 213 can be set to be ball rollers, and multiple ball rollers are installed on the abutment portion 210, and at least part of each ball roller extends out of the abutment portion 210, and the part of the ball roller extending out of the abutment portion 210 is used to form at least one of the first abutment surface 211 and the second abutment surface 212. For example, a first part of the ball rollers are used to form the first abutment surface 211, and a second part of the ball rollers are used to form the second abutment surface 212.

[0388] The abutment portion 210 may be provided with a first mounting groove, which may extend in a direction parallel to the first abutment surface 211, wherein a first portion of balls are accommodated in the first mounting groove, and the balls in the first mounting groove at least partially extend out of the first mounting groove, and the portion of the balls extending out of the first mounting groove is used to form the first abutment surface 211.

[0389] The abutment portion 210 may be provided with a second mounting groove, which may extend in a direction parallel to the second abutment surface 212, wherein a second portion of balls are accommodated in the second mounting groove, and the balls in the second mounting groove at least partially extend out of the second mounting groove, and the portion of the balls extending out of the second mounting groove is used to form the second abutment surface 212.

[0390] By way of example, the number of contact members 213 is set to be multiple, and the contact members 213 can be set to be rollers, the rotation axis of the first part of the roller is perpendicular to the extension direction of the inclined surface of the first inclined portion 110, and the peripheral surface of the first part of the roller is used to form the first abutment surface 211; the rotation axis of the second part of the roller is perpendicular to the extension direction of the inclined surface of the second inclined portion 120, the rotation axis of the second part of the roller can be set parallel to the rotation axis of the first part of the roller, and the peripheral surface of the second part of the roller is used to form the second abutment surface 212.

[0391] It should be noted that, during the process of the door body 30 rotating to close, when the door body 30 is at the maximum angle G max During the process of rotating to the closed state, the relative position of the abutment portion 210 can be set to the position of the bottom of the abutment portion 210, for example, when the door body 30 is in the closed state (ie When the door body 30 is at a first setting angle, the bottom of the abutting portion 210 abuts against the surface of the fixed part 100 facing the movable part 200; when the door body 30 is at a first setting 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 a second setting 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 is separated from the first inclined portion 110, and the second abutting surface 212 is separated from the second inclined portion 120; when the door body 30 is at a third setting 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.

[0392] Reference Fig.39 In some embodiments, the abutment portion 210 can be set as a columnar abutment portion 210, the first end of the columnar abutment portion 210 is connected to the surface of the movable part 200 facing the fixed part 100, the columnar abutment portion 210 extends in the vertical direction, and the second end of the columnar abutment portion 210 forms the bottom of the abutment portion 210, and the second end of the columnar abutment portion 210 is used to abut the surface of the fixed part 100 facing the movable part 200, the first abutment portion 210 and the second abutment portion 210, so that the movable part 200 drives the door body 30 to move in the vertical direction through the columnar abutment portion 210.

[0393] For example, the door body 30 can be reused to form the movable part 200, that is, the columnar abutment portion 210 can be arranged at the lower end of the door body 30, and the first track groove 50 and the second track groove 60 are both arranged at the lower end of the door body 30 to make the structure of the gravity self-closing structure simpler.

[0394] The columnar abutment 210 may be integrally provided on the door body 30, or the columnar abutment 210 may be detachably provided on the lower end of the door body 30. For example, the first end of the columnar abutment 210 may be provided with a thread so that the columnar abutment 210 can be threadedly connected to the lower end of the door body 30, and the second end of the columnar abutment 210 extends downward to facilitate the assembly and disassembly process of the columnar abutment 210.

[0395] The columnar abutment 210 can also be relatively fixed to the lower end of the door body 30 by means of snap-fitting or the like. When the columnar abutment 210 is assembled to form a gravity self-closing structure, the first end of the columnar abutment 210 can be inserted into the lower end of the door body 30, so that the columnar abutment 210 is connected to the door body 30, thereby making the assembly process of the gravity self-closing structure more convenient.

[0396] During the process of the door body 30 rotating and closing, the second end of the columnar abutment 210 can move from the surface of the fixing member 100 to the first end of the first inclined portion 110, and the second end of the columnar abutment 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 abutment 210; and the second end of the columnar abutment 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 columnar abutment 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 abutment 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 part 200 drives the door body 30 to move downward through the columnar abutment portion 210, so that the columnar abutment portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixing part 100 facing the movable part 200, so that the columnar abutment 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.

[0397] For example, the box body 10 can be reused to form the fixing part 100. For example, the hinge assembly located at the lower end of the door body 30 can be reused to form the fixing part 100. The hinge assembly can be provided with a hinge plate 40. The surface of the hinge plate 40 facing the movable part 200 is provided with a first hinge axis 41, a second hinge axis 42 and a protruding structure. The protruding structure forms a first inclined portion 110 and a second inclined portion 120, so that the formation process of the fixing part 100 is realized through the hinge plate 40, thereby making the structure of the gravity self-closing structure simpler.

[0398] Among them, 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 thread segment, and the first hinge shaft 41 is threadedly connected to the hinge plate 40 through the first thread segment. The second hinge shaft 42 is provided with a second thread segment, and the second hinge shaft 42 is threadedly connected to the hinge plate 40 through the second thread segment, so that the process of connecting the first hinge shaft 41 and the second hinge shaft 42 to the hinge plate 40 is more convenient.

[0399] The raised structure can be integrally formed on the hinge plate 40, or the raised structure can also be relatively fixed to the hinge plate 40 by means of snap-fitting or plug-in. The surface of the raised structure facing away from the hinge plate 40 forms an inclined surface of the first inclined portion 110 and an inclined surface of the second inclined portion 120. The surface of the raised structure facing the hinge plate 40 can be provided with a positioning column, and the hinge plate 40 is correspondingly provided with a positioning groove. The positioning column is inserted into the positioning groove, so that the installation position of the raised structure is positioned to a certain extent through the positioning column, making the installation process of the raised structure more convenient.

[0400] It is easy to understand that the lower end of the door body 30 is reused to form the movable part 200, and the hinge assembly of the box body 10 is reused to form the fixed part 100, so as to make the assembly process of the gravity self-closing structure more convenient.

[0401] In some embodiments, the second end of the cylindrical abutment portion 210 can be set as an arc-shaped abutment end, and the arc-shaped abutment end can be provided with a cylindrical circumferential surface or a hemispherical surface. When the arc-shaped abutment end is provided with a cylindrical circumferential surface, the extension direction of the cylindrical circumferential surface can be perpendicular to the extension direction of the inclined surface of the first inclined portion 110, so that the circular abutment 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.

[0402] Alternatively, when the circular abutting end is provided with a hemispherical surface, the hemispherical surface is protruded toward the movable part 200, and the center of the hemispherical surface is located in the extension direction of the cylindrical 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.

[0403] The columnar abutment portion 210 can abut against the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120 through the cylindrical circumferential surface to increase the contact area between the columnar abutment portion 210 and the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120, so that the process of the columnar abutment portion 210 driving the door body 30 to move in the vertical direction is more stable.

[0404] It should be noted that, during the process of the door body 30 rotating to close, when the door body 30 is at the maximum angle G max During the process of rotating to the closed state, the relative position of the columnar abutment portion 210 can be set to the second end of the columnar abutment portion 210. For example, when the door body 30 is in the closed state (ie, When the door body 30 is at a first setting angle, the second end of the columnar abutment portion 210 abuts against the surface of the fixed part 100 facing the movable part 200; when the door body 30 is at a first setting angle, the second end of the columnar abutment portion 210 abuts against the first end of the first inclined portion 110; when the door body 30 is at a second setting angle, the second end of the columnar abutment 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 a third setting angle, the second end of the columnar abutment portion 210 abuts against the second end of the second inclined portion 120.

[0405] Reference Fig.40 In some embodiments, a rolling member 214 may be provided at the second end of the columnar abutment portion 210. The rolling member 214 may be provided as a ball or a roller, etc., so as to reduce the friction between the columnar abutment portion 210 and the first inclined portion 110, and between the columnar abutment portion 210 and the second inclined portion 120 through the rolling member 214, so that the process of the door body 30 moving in the vertical direction is smoother.

[0406] By way of example, the rolling member 214 can be configured as a ball; the columnar abutment portion 210 is provided with a third mounting groove, the third mounting groove is located on the end face of the second end of the columnar abutment portion 210, part of the ball extends out of the third mounting groove, the part of the ball extending out of the third mounting groove forms the bottom of the columnar abutment portion 210, and the part of the ball extending 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 to reduce the friction between the columnar abutment portion 210 and the fixing member 100.

[0407] Alternatively, the rolling member 214 can be set as a roller, the rotation axis of the roller can be parallel to the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120, and the bottom end of the circumferential surface of the roller forms the bottom end of the columnar abutment portion 210, and the circumferential surface of the roller is used to abut the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120 to reduce the friction between the columnar abutment portion 210 and the fixing member 100.

[0408] It is easy to understand that in the process of the abutment portion 210 moving from the second end of the second inclined portion 120 to the surface of the fixed portion 100 facing the movable portion 200 through the rolling member 214, the abutment portion 210 can move quickly on the inclined surface of the second inclined portion 120 under the action of the rolling member 214, thereby reducing the possibility of the abutment portion 210 staying on the surface of the second inclined portion 120.

[0409] Reference Fig.41 In some embodiments, the abutment portion 210 can be set as a roller-type abutment portion 210, which can be rotatably set on the surface of the movable part 200 facing the fixed part 100, and the peripheral surface of the roller-type abutment portion 210 is used to abut the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined surface. The bottom end of the peripheral surface of the roller-type abutment portion 210 forms the bottom of the abutment portion 210, and the rotation axis of the roller-type abutment portion 210 can be parallel to the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120.

[0410] For example, a mounting frame may be provided on the surface of the movable part 200 facing the fixed part 100, and a mounting hole is provided on the mounting frame. The mounting hole is used to pass the rotating shaft of the roller abutment part 210 so that the roller abutment part 210 can rotate relative to the movable part 200 through the rotating shaft and the mounting frame.

[0411] 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, and 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 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. The bottom end of the abutment 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 part 200 drives the door body 30 to move downward through the roller-type abutment portion 210, so that the roller-type abutment portion 210 can move from the second end of the second inclined portion 120 to the surface of the fixing part 100 facing the movable part 200, so that the roller-type abutment 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.

[0412] Moreover, in the process of the roller abutment portion 210 moving from the second end of the second inclined portion 120 to the surface of the fixed member 100 facing the movable member 200, the roller abutment portion 210 can move quickly on the inclined surface of the second inclined portion 120, thereby reducing the possibility of the roller abutment portion 210 staying on the surface of the second inclined portion 120.

[0413] A first arc portion may be provided between the surface of the fixed member 100 facing the movable member 200 and the first inclined portion 110 to facilitate the process of the roller-type abutting portion 210 moving from the surface of the fixed member 100 to the first inclined portion 110, and the curvature of the first arc portion may 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 fixed member 100 facing the movable member 200 through the first arc portion to the first inclined portion 110, thereby making the process of the door body 30 moving upward in the vertical direction smoother.

[0414] An angle portion may 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 may 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 may be greater than the curvature of the roller-type abutment portion 210. When the roller-type abutment 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 abutment portion 210 cannot move to the second inclined portion 120 through the angle portion or the second arc portion, thereby increasing the difficulty of the roller-type abutment portion 210 moving to the second inclined portion 120, and further reducing the possibility of a gap between the door body 30 and the box body 10.

[0415] It should be noted that, during the process of the door body 30 rotating to close, when the door body 30 is at the maximum angle G max During the process of rotating 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. When the door body 30 is at a first set angle, the bottom end of the circumferential surface of the roller abutting portion 210 abuts against the surface of the fixed part 100 facing the movable part 200; when the door body 30 is at a first set angle, the bottom end of the circumferential surface of the roller abutting portion 210 abuts against the first end of the first inclined portion 110; when the door body 30 is at a second set angle, the bottom end of the circumferential surface of the roller 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 a third set angle, the bottom end of the circumferential surface of the roller abutting portion 210 abuts against the second end of the second inclined portion 120.

[0416] 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 abutment 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, and the surface of the transition structure 130 facing the movable part 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 abutment portion 210 can more stably abut against the surface of the transition structure 130 facing the movable part 200.

[0417] In some embodiments, when the abutting portion 210 forms a first inclined surface and a second inclined surface, the abutting portion 210 is configured as a columnar abutting portion 210, the abutting portion 210 is configured as a roller-type abutting portion 210, or when the abutting portion 210 is configured in other forms, the implementation of the first inclined portion 110 and the second inclined portion 120 is as follows:

[0418] 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, which protrudes toward the movable part 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 abutment portion 210 moving from the second end of the first inclined portion 110 to the first end of the second inclined portion 120 smoother.

[0419] For example, the transition structure 130 may 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 sequentially connected to form a protruding structure.

[0420] The transition structure 130 can also form 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, and 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 abutment 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.

[0421] The length of the transition plane can be adjusted according to the positions of the inflection point of the first trajectory groove 50 and the inflection point of the second trajectory groove 60. For example, when the bottom of the abutment portion 210 abuts against the transition plane, the positioning center axis P can be moved to the inflection point of the first trajectory groove 50, or the guide center axis Q is moved to the inflection point of the second trajectory groove 60, so as to set a transition plane between the second end of the first inclined portion 110 and the first end of the second inclined portion 120 so that the movement process of the abutment portion 210 is more stable, so that it can pass through the first inflection point U or the second inflection point V more stably.

[0422] For example, the first setting 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 When the positioning center 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 When the guide center axis Q moves to the inflection point of the second track groove 60, and the bottom of the abutment portion 210 can abut against the transition plane, so that the abutment portion 210 can stably pass through the inflection point of the second track groove 60.

[0423] The specific configuration is: when the door body 30 is at the fourth angle G 4 When the positioning center axis P moves to the inflection point of the first track groove 50, the bottom of the abutment portion 210 moves to the first end of the first inclined portion 110; 4 Rotate to close G 3 During the process, the bottom of the abutting portion 210 can move from the first end of the first inclined portion 110 to the transition plane through the second end of the first inclined portion 110; when the door body 30 is at the third angle G 3 When the guide center axis Q moves to the inflection point of the second track groove 60, the bottom of the abutment portion 210 moves toward the first end of the second inclined portion 120 on the transition plane, so that the movement process of the abutment portion 210 is more stable by setting the transition plane.

[0424] Reference Fig.42 - Figure 6, in some embodiments, the transition structure 130 may include a support body 131, and a transition piece 132 arranged at the top end of the support body 131, at least a portion of the transition piece 132 extends out of the support body 131 toward the movable part 200, the transition piece 132 can be configured as a ball or a roller, etc., the transition piece 132 is arranged between the second end of the first inclined portion 110 and the first end of the second inclined portion 120, and the top end of the transition piece 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 abutment 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 piece 132.

[0425] For example, the transition piece 132 can be configured as a ball, which is embedded in the top of the support body 131 and at least partially extends out of the support body 131. The portion of the ball extending out of the support body 131 can be used to abut the abutment portion 210, so that the abutment 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.

[0426] The transition piece 132 can also be set as a roller, the rotating axis of the roller can be parallel to the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120, and the top end of the circumferential surface of the roller is used to abut the abutment portion 210, so that the abutment 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.

[0427] It is easy to understand that the number of transition pieces 132 can be set to one or more. When the number of transition pieces 132 is set to multiple, multiple transition pieces 132 can form at least one row of transition pieces 132, the first end of the row of transition pieces 132 is connected to the second end of the first inclined portion 110, and the second end of the row of transition pieces 132 is connected to the first end of the second inclined portion 120. Each row of transition pieces 132 includes several transition pieces 132, and the number of rows of transition pieces 132 can be set to several, and the arrangement direction of the several rows of transition pieces 132 is perpendicular to the row direction of the rows of transition pieces 132.

[0428] For example, the number of transition pieces 132 is set to multiple, and the multiple transition pieces 132 form several rows of transition pieces 132. Among the several rows of transition pieces 132, each row of transition pieces 132 may include ball bearings, or each row of transition pieces 132 may include rollers; or, among the several rows of transition pieces 132, at least one row of transition pieces 132 includes ball bearings, and at least one row of transition pieces 132 includes rollers.

[0429] In some embodiments, the transition structure 130 may include a support body 131 and a transition piece 132 arranged at the top of the support body 131, the number of transition pieces 132 is set to one, the transition piece 132 can be set to a ball or a roller, etc., at least a portion of the transition piece 132 extends out of the support body 131, the portion of the transition piece 132 extending out of the support body 131 can be used to abut the abutment portion 210, and the top of the transition piece 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 portion of the transition piece 132 is reused to form the inclined surface of the first inclined portion 110, and at least a portion of the transition piece 132 is reused to form the inclined surface of the second inclined portion 120.

[0430] For example, when the abutment 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 piece 132, the abutment portion 210 continues to move upward from the second end of the first inclined portion 110 through the surface of the transition piece 132 to the top of the transition piece 132, and then moves downward from the top of the transition piece 132 through the surface of the transition piece 132 to the first end of the second inclined portion 120.

[0431] The transition piece 132 can be set as a ball, which is embedded in the top of the support body 131 and at least partially extends out of the support body 131. The part of the ball extending out of the support body 131 can be used to abut the abutment portion 210, so that the abutment 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.

[0432] The transition piece 132 can also be set as a roller, the rotating axis of the roller can be parallel to the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120, and the top end of the circumferential surface of the roller is used to abut the abutment portion 210, so that the abutment 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.

[0433] In some embodiments, the first surface of the protruding structure faces the first hinge axis 41 and the second hinge axis 42, and the second surface of the protruding structure faces away from the first hinge axis 41 and the second hinge axis 42, and the first surface of the protruding structure forms an inclined surface of the first inclined portion 110 and an inclined surface of the second inclined portion 120 connected to each other; the second surface of the abutting portion 210 forms a first abutting surface 211 and a second abutting surface 212 connected to each other; when the movable part 200 rotates relative to the fixed part 100 through the first hinge axis 41 and the second hinge axis 42, the abutting portion 210 is arranged on the first surface of the protruding structure.

[0434] For example, the transition structure 130 has an arc surface, which is located on the first surface of the convex structure, the arc surface faces the first hinge axis 41 and the second hinge axis 42, and 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 center axis of the cylindrical arc surface is set at an inclination.

[0435] Alternatively, the transition structure 130 may include a support body 131, and a transition piece 132 arranged at the top end of the support body 131, at least a portion of the transition piece 132 extends out of the support body 131 toward the movable part 200, the transition piece 132 may be configured as a ball or a roller, etc., the transition piece 132 is disposed between the second end of the first inclined portion 110 and the first end of the second inclined portion 120, and the top end of the transition piece 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 abutment 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 piece 132.

[0436] The transition piece 132 can be set as a roller, the rotation axis of the roller can be parallel to the inclined surface of the first inclined portion 110 and the inclined surface of the second inclined portion 120, and the rotation axis of the roller is set at an angle, the rotation axis of the roller forms the central axis of the cylindrical arc surface, and the partial circumferential surface of the roller extending out of the support body 131 is used to abut the abutment portion 210, and the partial circumferential surface of the roller extending out of the support body 131 forms a cylindrical arc surface, so that the abutment 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.

[0437] In some embodiments, at least one of the first inclined portion 110 and the second inclined portion 120 may be provided with a moving part, which may be configured as a ball or a roller, etc., so as to reduce the friction between the abutting portion 210 and the first inclined portion 110, the abutting portion 210 and the second inclined portion 120 through the moving part, so that the process of the door body 30 moving in the vertical direction is smoother.

[0438] By way of example, the number of moving parts can be set to one or more, and when the number of moving parts is set to one, the contact member 213 can be set on the first inclined portion 110 or the second inclined portion 120; or, the number of moving parts can also be set to multiple, and multiple moving parts can be used to form at least one of the inclined surfaces of the first inclined portion 110 and the second inclined portion 120.

[0439] On the first inclined portion 110, when the number of moving parts is set to be multiple, the multiple moving parts can be arranged in a direction parallel to the inclined surface of the first inclined portion 110, and the multiple moving parts can be reused to form the inclined surface of the first inclined portion 110 to reduce the friction between the abutment portion 210 and the first inclined portion 110 when the door body 30 moves upward.

[0440] On the second inclined portion 120, when the number of moving parts is set to be multiple, the multiple moving parts can be arranged in a direction parallel to the inclined surface of the second inclined portion 120, and the multiple moving parts can be reused to form the inclined surface of the second inclined portion 120 to reduce the friction between the abutment portion 210 and the second inclined portion 120 when the door body 30 moves downward.

[0441] In the first inclined portion 110 and / or the second inclined portion 120, when the number of moving parts is set to multiple, the multiple moving parts can form at least one moving part row, each moving part row includes several moving parts, and the number of moving part rows can be set to multiple, and the arrangement direction of the multiple moving part rows is perpendicular to the row direction of the transition part 132 row.

[0442] For example, in the first inclined portion 110 and / or the second inclined portion 120, the number of transition pieces 132 is set to be multiple, and the multiple moving pieces form several moving piece rows. Among the several moving piece rows, each moving piece row can include ball bearings, or each moving piece row can include rollers; or, among the several moving piece rows, at least one moving piece row includes ball bearings, and at least one moving piece row includes rollers.

[0443] Reference Figure 47-Figure 48 In some embodiments, the surface of the fixed member 100 facing the movable member 200 may further include a guide structure 160. The guide structure 160 may be arranged corresponding to the moving path of the abutment 210 relative to the fixed member 100, so as to play a certain guiding role in the moving process of the abutment 210 through the guide structure 160, thereby reducing the possibility of the abutment 210 being offset during the movement process.

[0444] By way of example, the guide structure 160 may be configured as a groove-type guide structure 160, and the groove-type guide structure 160 may include a first portion and a second portion that are spaced apart, wherein the first portion of the groove-type guide structure 160 is disposed on a side of the first inclined portion 110 away from the second inclined portion 120, and the second portion of the groove-type guide structure 160 is disposed on a 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 abutment portion 210 can pass through the first portion of the groove-type guide structure 160, the first inclined portion 110, the second inclined portion 120 and the second portion of the groove-type guide structure 160 in sequence.

[0445] The shape of the groove-type guiding structure 160 can be adjusted according to the bottom shape of the abutment portion 210. For example, when the abutment portion 210 is set as a columnar abutment portion 210, and the bottom of the columnar abutment portion 210 is in an arc shape, the cross-sectional shape of the groove-type guiding structure 160 can be correspondingly set to an arc shape. When the bottom of the columnar abutment portion 210 is in a cylindrical shape, the cross-sectional shape of the groove-type guiding structure 160 can be correspondingly set to a square shape, so that the groove-type guiding structure 160 can play a certain guiding role on the columnar abutment portion 210.

[0446] Alternatively, the grooved guiding structure 160 can also be used to abut against the abutting portion 210 having the first abutting surface 211 and the second abutting surface 212 , and the grooved guiding structure 160 can be used to guide the bottom of the abutting portion 210 having the first abutting surface 211 and the second abutting surface 212 .

[0447] The grooved guide structure 160 may also be provided with structures such as rollers or balls. The number of rollers and the number of balls may be set to multiple, and the multiple rollers or multiple balls may be arranged along the extension direction of the grooved guide structure 160, so that the bottom of the abutment portion 210 can be rolled in contact with the grooved guide structure 160 through the multiple rollers or multiple balls, thereby reducing the friction between the abutment portion 210 and the grooved guide structure 160.

[0448] By way of example, the guide structure 160 may also be configured as a raised guide structure 160, which may include a first portion and a second portion that are spaced apart, wherein the first portion of the raised guide structure 160 is disposed on a side of the first inclined portion 110 away from the second inclined portion 120, and the second portion of the raised guide structure 160 is disposed on a 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 abutment portion 210 can pass through the first portion of the raised guide structure 160, the first inclined portion 110, the second inclined portion 120 and the second portion of the raised guide structure 160 in sequence.

[0449] The raised guide structure 160 includes two matching guide bars, which are arranged at intervals, and the interval between the two guide bars is used to pass the abutment portion 210; the surface of the fixed part 100 facing the movable part 200, and the surfaces of the two guide bars facing each other form a guide groove, wherein the surface of the fixed part 100 facing the movable part 200 forms the bottom surface of the guide groove, and the surfaces of the two guide bars facing each other form the side wall surfaces of the guide groove.

[0450] The shape of the guide groove can be adjusted according to the bottom shape of the abutment portion 210. For example, when the abutment portion 210 is set as a columnar abutment portion 210, and the bottom of the columnar abutment portion 210 is in an arc shape, the cross-sectional shape of the guide groove can be correspondingly set to an arc shape. When the bottom of the columnar abutment portion 210 is in a cylindrical shape, the cross-sectional shape of the guide groove can be correspondingly set to a square shape, so as to play a certain guiding role on the columnar abutment portion 210 through the guide groove.

[0451] Alternatively, the guide groove can also be used to abut the abutment portion 210 having the first abutment surface 211 and the second abutment surface 212 , and the guide groove can be used to guide the bottom of the abutment portion 210 having the first abutment surface 211 and the second abutment surface 212 to a certain extent.

[0452] The bottom surface of the guide groove can also be provided with structures such as rollers or balls. The number of rollers and the number of balls can be set to multiple, and the multiple rollers or multiple balls can be arranged along the extension direction of the guide groove, so that the bottom of the abutment portion 210 can roll and contact with the guide groove through the multiple rollers or multiple balls, thereby reducing the friction between the abutment portion 210 and the guide groove.

[0453] By way of example, the guide structure 160 can also be set as a hidden guide structure 160, and a movable groove is set on the surface of the fixed part 100 facing the movable part 200, and the first inclined portion 110 and the second inclined portion 120 can be set in the movable groove, and the first inclined portion 110 and the second inclined portion 120 separate the movable groove into a first part and a second part which are set at intervals, and the first part of the movable groove is set on the side of the first inclined portion 110 away from the second inclined portion 120, and the second part of the movable groove is set on the side of the second inclined portion 120 away from the first inclined portion 110, and the first part of the movable groove forms the first part of the hidden guide structure 160, and the second part of the movable groove forms the second part of the hidden guide structure 160.

[0454] 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 fixed member 100 facing the movable member 200, or the second end of the first inclined portion 110 and the first end of the second inclined portion 120 can also be protruding from the surface of the fixed member 100 facing the movable member 200.

[0455] The shape of the movable groove can be adjusted according to the bottom shape of the abutment portion 210. For example, when the abutment portion 210 is set as a columnar abutment portion 210, and the bottom of the columnar abutment portion 210 is in an arc shape, the cross-sectional shape of the movable groove can be correspondingly set to an arc shape. When the bottom of the columnar abutment portion 210 is in a cylindrical shape, the cross-sectional shape of the movable groove can be correspondingly set to a square shape, so as to play a certain guiding role on the columnar abutment portion 210 through the movable groove.

[0456] Alternatively, the movable groove can also be used to abut against the abutting portion 210 having the first abutting surface 211 and the second abutting surface 212 , and the movable 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 .

[0457] The bottom surface of the movable groove may also be provided with structures such as rollers or balls. The number of rollers and the number of balls may be set to multiple, and the multiple rollers or balls may be arranged along the extension direction of the movable groove, so that the bottom of the abutment portion 210 can be rolled in contact with the movable groove through the multiple rollers or balls, thereby reducing the friction between the abutment portion 210 and the movable groove.

[0458] Reference Fig.49 In some embodiments, a surface of the hinge plate 40 facing away from the first hinge axis 41 and the second hinge axis 42 is provided with a foot 43, and the hinge plate 40 is supported by the foot 43 so that the weight of the door body 30 can be transferred to the ground through the foot 43, thereby reducing the force on the hinge plate 40 and reducing the possibility of bending and breaking of the hinge plate 40.

[0459] The hinge plate 40 is also provided with a rotatable roller having a rotating surface, the bottom surface of which is flush with the bottom end of the foot 43, so that the box body 10 can be driven to move through the rotating surface, thereby making the movement process of the box body 10 more convenient.

[0460] In some embodiments, along the extension direction of the first hinge axis 41 and the second hinge axis 42, the orthographic projection area of ​​the first inclined portion 110 and the second inclined portion 120 on the surface of the fixed part 100 toward the movable part 200 can be adjusted according to the size of the first set angle, the second set angle and the third set angle.

[0461] For example, when the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the first setting angle. degrees, the opening angle of the door body 30 is set to the second set angle; when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to a third set angle.

[0462] At this time, on the surface of the fixed part 100 facing the movable part 200, the central angle corresponding to 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 abutment 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.

[0463] For example, when the opening angle of the door body 30 is degrees, the opening angle of the door body 30 is set to the first setting angle. degrees, the opening angle of the door body 30 is set to the second set angle; when the opening angle of the door body 30 degrees, the opening angle of the door body 30 is set to a third set angle.

[0464] At this time, on the surface of the fixed part 100 facing the movable part 200, the central angle corresponding to 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 abutment 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.

[0465] It should be noted that, with respect to the surface of the fixed member 100 facing the movable member 200, the central angle corresponding to 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 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.

[0466] In some embodiments, the fixing member 100 can be relatively fixedly disposed on the box body 10 . For example, the fixing member 100 can be directly connected to the box body 10 , or the fixing member 100 can also be connected to the box body 10 via a hinge assembly located at the lower end of the door body 30 .

[0467] For example, the fixing member 100 can be set as a plate-type fixing member 100 or a column-type fixing member 100, and the first surface of the fixing member 100 can face the box body 10, or the fixing member 100 can also face the hinge plate 40 of the hinge assembly, and the second surface of the fixing member 100 faces the lower end of the door body 30, and the second surface of the fixing member 100 is connected to the first hinge axis 41 and the second hinge axis 42.

[0468] The fixing member 100 may be provided with at least one connecting member 140 , so that the fixing member 100 is relatively fixed to the box body 10 through the connecting member 140 . For example, the fixing member 100 may be fixed to the hinge plate 40 of the hinge assembly through the connecting member 140 .

[0469] The connecting member 140 can be configured as a connecting column, which can be relatively fixedly arranged on the hinge plate 40, the first end of the connecting column is connected to the hinge plate 40, the second end of the connecting column extends toward the movable member 200, and the fixing member 100 is provided with a movable opening, and the connecting column is passed through the movable opening, so that the fixing member 100 can be relatively movably arranged on the hinge plate 40 along the extension direction of the connecting column, so that the fixing member 100 and the hinge plate 40 can be fixed by the connecting column.

[0470] The connecting member 140 may also be configured as a fixing bolt, a fixing pin or the like, or the connecting member 140 may also be configured as a card joint or the like, so that the fixing member 100 may be detachably connected to the hinge plate 40 by card connection or the like.

[0471] The number of connecting members 140 can be set to one or more. When the number of connecting members 140 is set to multiple, the multiple connecting members 140 can be evenly distributed on the fixing member 100, and the extension directions of the multiple connecting members 140 are set parallel to each other, so that the process of the fixing member 100 moving along the extension direction of the connecting member 140 is more stable.

[0472] For example, the first hinge axis 41 and the second hinge axis 42 can also be arranged on the hinge plate 40, and the extension direction of the first hinge axis 41 and the extension direction of the second hinge axis 42 are both arranged parallel to the extension direction of the connecting member 140, and the fixing member 100 can be provided with two through holes, and the two through holes are used to pass through the first hinge axis 41 and the second hinge axis 42 respectively, so that the ends of the first hinge axis 41 and the second hinge axis 42 away from the hinge plate 40 can pass through the fixing member 100 and extend toward the movable member 200, and the fixing member 100 can move along the extension direction of the first connecting member 140 through the two through holes.

[0473] When the fixing member 100 is relatively fixed to the box body 10, the fixing member 100 can be moved in a direction close to the hinge plate 40, so that the connecting column is passed through the movable opening, and the first hinge axis 41 and the second hinge axis 42 relatively fixed to the hinge plate 40 can be passed through the through hole, and the first surface of the fixing member 100 faces the hinge plate 40, thereby fixing the fixing member 100 relatively to the box body 10.

[0474] For example, the fixing member 100 may also be provided with an adjusting member 150, the first end of the adjusting member 150 may be connected to the fixing member 100, the second end of the adjusting member 150 may be connected to the hinge plate 40, and the second end of the adjusting member 150 may be telescopically arranged along the extension 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.

[0475] It is easy to understand that the movable part 200 is relatively fixed to the door body 30. When the distance between the fixed part 100 and the hinge plate 40 is adjusted by the adjusting part 150, since the distance between the movable part 200 and the fixed part 100 remains relatively fixed, the distance between the movable part 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 fixed part 100 and the hinge plate 40 through the adjusting part 150.

[0476] The adjusting member 150 can be configured as an adjusting bolt, the first end of which 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 be protruded relative to 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 so that the threaded section of the adjusting bolt is screwed into or out of the hinge plate 40, thereby changing the length of the adjusting bolt located between the fixing member 100 and the hinge plate 40, so as to realize the adjustment process of the distance between the fixing member 100 and the hinge plate 40.

[0477] Alternatively, the adjusting member 150 can also be configured as an adjusting nut, which can be threadedly connected to the connecting column, and the surface of the adjusting nut facing 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 extension direction of the connecting column, thereby changing the length of the connecting column between the fixing member 100 and the hinge plate 40, so as to realize the adjustment process of the distance between the fixing member 100 and the hinge plate 40.

[0478] For example, the connecting member 140 can also be reused to form an adjusting nut. For example, the connecting member 140 can be rotatably set on the hinge plate 40 around the extension direction of the connecting member 140, and the first end of the connecting member 140 is protruded relative to the surface of the hinge plate 40 away from the fixing member 100, and 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 so that the threaded section of the connecting member 140 is screwed into or out of the fixing member 100, thereby changing the length of the connecting member 140 located between the fixing member 100 and the hinge plate 40, so as to realize the adjustment process of the distance between the fixing member 100 and the hinge plate 40.

[0479] Alternatively, the connecting member 140 can be rotatably arranged on the fixing member 100 around the extension direction of the connecting member 140, and the first end of the connecting member 140 is protruded relative to the surface of the fixing member 100 away from the hinge plate 40, and 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 so that the threaded section of the connecting member 140 is screwed into or out of the hinge plate 40, thereby changing the length of the connecting member 140 located between the fixing member 100 and the hinge plate 40, so as to realize the adjustment process of the distance between the fixing member 100 and the hinge plate 40.

[0480] In some embodiments, the shape of the first track groove 50 and the shape of the second track groove 60 can also be set as follows:

[0481] The first track line is defined by the shape of the first track groove 50, wherein the center track line of the first track groove 50 is recorded as the first track line S, and the first track line S includes a first curved track segment and a second curved track segment connected by a smooth transition. The second curved track segment is located on a side of the first curved track segment close to the door side wall 32.

[0482] The second track groove 60 can be set as a curved groove, and one end of the second track groove 60 is farther away from the door rear wall 33 and the door side wall 32 than the other end of the second track groove 60. The second track groove 60 protrudes toward the door rear wall 33. The center track line of the second track groove 60 is recorded 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 protrudes toward the door rear wall 33.

[0483] In the first track groove 50, the first track groove 50 includes a first inflection point U, which separates the first curved track segment and the second curved track segment. In the second track groove 60, the second track groove 60 includes a second inflection point V, which separates the second track line K into a first part and a second part.

[0484] For example, at the first inflection point U in the first trajectory groove 50, the second curved trajectory segment is offset relative to the extension direction of the first curved trajectory segment, and 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 opposite to the offset direction of the second part of the second trajectory line K.

[0485] The first trajectory line S includes a first positioning point P away from the door side wall 32. 1 and a sixth positioning point P close to the door side wall 32 6 The first trajectory line S is formed by the first positioning point P 1 First, it extends along the first curved track segment toward the door side wall 32, and then extends along the second curved track segment to the sixth positioning point P 6 The second trajectory line K includes a first guide point Q away from the door side wall 32 1 and a sixth guide point Q near the door side wall 32 6 . The sixth guide point Q 6 Located at the first guide point Q 1 On the side away from the door front wall 31 and close to the door side wall 32, the second trajectory line K is from the first guide point Q 1 The guide point Q is extended along the curve in a direction away from the door front wall 31 and close to the door side wall 32 to the sixth guide point Q. 6 .

[0486] By way of example, the first trajectory 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 trajectory groove 50” may represent the first first inflection point U among the plurality of first inflection points U, for example, “the positioning center axis P moves to the inflection point of the first trajectory groove 50” may also represent the positioning center axis P moves to the first first inflection point U; or, the “inflection point of the first trajectory groove 50” may represent any remaining first inflection point U among the plurality of first inflection points U, for example, “the positioning center axis P moves to the inflection point of the first trajectory groove 50” may represent the positioning center axis P passes through some of the first inflection points U and moves to a first inflection point U.

[0487] The second trajectory 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 trajectory groove 60” may indicate the first second inflection point V among the plurality of second inflection points V. For example, “the guide center axis Q moves to the inflection point of the second trajectory groove 60” may indicate that the guide center axis Q moves to the first second inflection point V. Alternatively, the “inflection point of the second trajectory groove 60” may also indicate any other second inflection point V among the plurality of second inflection points V. For example, “the guide center axis Q moves to the inflection point of the second trajectory groove 60” may indicate that the guide center axis Q passes through some of the second inflection points V and moves to a second inflection point V.

[0488] When the door body 30 is in the closed state (i.e. When the door 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 (guide central axis Q) is located at the first guide 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.

[0489] During the process of the door body 30 rotating and closing, when the positioning center axis P moves to the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 is located at the first set angle. For example, as described in the first embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P moves to the inflection point of the first track groove 50 , and the guide center axis Q moves to the inflection point of the second track groove 60 .

[0490] Alternatively, during the process of the door body 30 rotating and closing, when the positioning center axis P passes through the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and 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, the guide 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 the second embodiment, when the door body 30 is at the fourth angle G4 When the door body 30 is not rotated to the first setting angle, the positioning center axis P moves to the inflection point of the first track groove 50. 3 When , the guide center axis Q moves to the inflection point of the second track groove 60;

[0491] Alternatively, during the process of the door body 30 rotating and closing, when the positioning center axis P has not moved to the inflection point of the first track groove 50 and the guide center axis Q has moved 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 moves to the inflection point of the first track groove 50 and the guide center axis Q passes the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in the third embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is not rotated to the first set angle, the guide center axis Q moves to the inflection point of the second track groove 60. 3 When , the positioning center axis P moves to the inflection point of the first track groove 50;

[0492] Alternatively, during the process of the door body 30 rotating and closing, while the positioning center axis P moves to the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 has not rotated to the first set angle; after the positioning center axis P passes the inflection point of the first track groove 50 and the guide center axis Q passes the inflection point of the second track groove 60, the door body 30 rotates to the first set angle. For example, as described in the fourth embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is not rotated to the first set angle, the positioning center axis P passes through the inflection point of the first track groove 50 , and the guide center axis Q passes through the inflection point of the second track groove 60 .

[0493] Alternatively, during the process of the door body 30 rotating and closing, when the positioning center axis P passes through the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 is located at the first set angle. For example, as described in the fifth embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P passes through the inflection point of the first track groove 50 , and the guide center axis Q moves to the inflection point of the second track groove 60 .

[0494] Alternatively, during the process of the door body 30 rotating and closing, after the positioning center axis P moves to the inflection point of the first track groove 50 and the guide center axis Q moves to the inflection point of the second track groove 60, the door body 30 is located at the first set angle. For example, as described in the sixth embodiment, when the door body 30 is at the fourth angle G 4When the door body 30 is located at the first set angle, the positioning center axis P moves to the inflection point of the first track groove 50 , and the guide center axis Q passes through the inflection point of the second track groove 60 .

[0495] Alternatively, during the process of the door body 30 rotating and closing, before the positioning center axis P moves to the inflection point of the first track groove 50 and the guide center axis Q moves to the inflection point of the second track groove 60, the door body 30 is located at the first set angle. For example, as described in Embodiment 7, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P moves to the inflection point of the first track groove 50 , and the guide center axis Q does not move to the inflection point of the second track groove 60 .

[0496] Alternatively, during the process of the door body 30 rotating and closing, before the positioning center axis P moves to the inflection point of the first track groove 50, the guide center axis Q moves to the inflection point of the second track groove 60, and the door body 30 is located at the first set angle. For example, as described in the sixth embodiment, when the door body 30 is at the fourth angle G 4 When the door body 30 is located at the first set angle, the positioning center axis P does not move to the inflection point of the first track groove 50 , and the guide center axis Q moves to the inflection point of the second track groove 60 .

[0497] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0498] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: include: A box body, wherein the box body is formed with a receiving cavity; A door body, the door body can be rotatably arranged on the box body to close or open the accommodating cavity; A gravity self-closing structure is arranged at the lower end of the door body, and the gravity self-closing structure includes a matching fixed part and a movable part, the fixed part is 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, and the first track groove and the second track groove are both facing the fixed member; 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 part is provided with an abutment portion, and the abutment portion is provided with a contact piece; during the process of the door body rotating and closing, the abutment portion abuts against the first inclined portion and the second inclined portion in sequence through the contact piece; the first hinge shaft moves from the first end of the first trajectory groove toward the second end of the first trajectory groove; the second hinge shaft moves from the first end of the second trajectory groove toward the second end of the second trajectory groove.

2. 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.

3. The refrigerator according to claim 2, characterized in that: The number of the contact members is set to be multiple, the first part of the contact members among the multiple contact members are arranged in a direction parallel to the first inclined portion, the first part of the contact members are used to form the first abutting surface, and the first part of the contact members are used to abut against the first inclined portion; A second portion of the contact members among the plurality of contact members are arranged in a direction parallel to the second inclined portion, the second portion of the contact members are used to form the second abutting surface, and the second portion of the contact members are used to abut against the second inclined portion.

4. The refrigerator according to claim 3, characterized in that: The contact member is configured as a ball; a plurality of the balls are mounted on the abutment portion, at least a portion of the balls extend out of the abutment portion, and a portion of the balls extending out of the abutment portion forms at least one of the first abutment surface and the second abutment surface; Alternatively, the contact piece is configured as a roller; the rotation axis of the roller in the first part is perpendicular to the extension direction of the first inclined portion, and the circumferential surface of the roller in the first part forms the first abutment surface; the rotation axis of the roller in the second part is perpendicular to the extension direction of the second inclined portion, the rotation axis of the roller in the second part is arranged parallel to the rotation axis of the roller in the first part, and the circumferential surface of the roller in the second part is used to form the second abutment surface.

5. The refrigerator according to claim 1, characterized in that: The abutting portion is provided with an accommodating groove, the accommodating groove accommodates part of the contact piece, at least part of the contact piece extends out of the accommodating groove, and the part of the contact piece extending out of the accommodating groove is used to abut the first inclined portion and the second inclined portion.

6. The refrigerator according to claim 1, characterized in that: At least one of the first inclined portion and the second inclined portion is provided with a moving member, and the moving member is used to abut against the abutting portion.

7. The refrigerator according to claim 2, 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.

8. The refrigerator according to any one of claims 1 to 7, characterized in that: The first track groove has a first inflection point, and the second track groove has a second inflection point; 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.

9. The refrigerator according to any one of claims 1 to 7, characterized in that: The first track groove has a first inflection point, and the second track groove has a second inflection point; 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.

10. 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 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 abutting portion, and the abutting portion is provided with a contact member; the abutting portion abuts against the first inclined portion and the second inclined portion through the contact member; During the process of the door body rotating and closing to the first setting angle, the abutting portion is movably disposed on the first part of the fixing member through the contact member; when the door body is located at the first setting angle, the abutting portion is located at the first end of the first inclined portion; 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 through the contact piece; 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 through the contact piece.

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