Refrigerator

Abstract

A refrigerator, which belongs to the technical field of refrigeration, and aims to solve the technical problem of a gap being prone to occurring between a door (200) and a cabinet (100) and a poor sealing performance of an accommodating cavity thus being caused in the related art. The refrigerator comprises a cabinet (100), a door (200), and a gravity self-closing structure. The gravity self-closing structure comprises a fixed member (300) and a movable member (400), which cooperate with each other, wherein the movable member (400) is provided with a trajectory groove (420); the fixed member (300) is provided with a first hinge shaft (310) and a second hinge shaft (320); the movable member (400) is provided with an abutting portion facing the fixed member (300); the fixed member (300) has an inclined portion (340); a first end of the inclined portion (340) is higher than a second end of the inclined portion (340); and during the closing of the door (200), the abutting portion moves from at least the first end of the inclined portion (340) toward the second end of the inclined portion (340), and the door (200) generates a downward displacement in a vertical direction. The refrigerator can reduce the occurrence of a gap between the door (200) and the cabinet (100), thereby improving the sealing performance of the accommodating cavity.

Description

refrigerator

[0001] This application claims priority to Chinese patent application No. 202410669673.X, filed on May 28, 2024; Chinese patent application No. 202421190099.1, filed on May 28, 2024; and Chinese patent application No. 202421188348.3, filed on May 28, 2024. Priority to Chinese patent application No. 202421189943.9, filed on May 28, 2024; priority to Chinese patent application No. 202421190063.3, filed on May 28, 2024; and priority to Chinese patent application No. 202421188463.0, filed on May 28, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of refrigeration technology, and more particularly to a refrigerator. Background Technology

[0003] A refrigerator is a common household appliance that keeps food or other items at a constant low temperature. A refrigerator consists of a cabinet and a door. The cabinet forms a cavity for holding food or other items, and the door is movable within the cabinet to close or open the cavity. However, when the door is closed to seal the cavity, gaps can easily appear between the door and the cabinet, resulting in poor sealing of the cavity.

[0004] Summary of the Invention

[0005] This application provides a refrigerator that solves the technical problem that when the door is closed to seal the cavity, gaps easily appear between the door and the cabinet, resulting in poor sealing of the cavity.

[0006] In a first aspect, embodiments of this application provide a refrigerator, comprising:

[0007] Box;

[0008] The door is rotatably mounted on the housing;

[0009] The gravity-operated self-closing structure includes a fixing component and a movable component that cooperate with each other. The fixing component is disposed in the housing, and the movable component is fixedly disposed in the door.

[0010] The movable component is provided with a track groove; the fixed component is provided with a first hinge shaft and a second hinge shaft spaced apart, the first hinge shaft and the second hinge shaft can move in the track groove;

[0011] The movable component is provided with an abutting portion facing the fixed component; the fixed component has an inclined portion facing the movable component, the inclined portion having a high end and a low end;

[0012] During the process of the door rotating and closing, the first hinge shaft and the second hinge shaft move within the track groove along the extension direction of the track groove, the abutting part moves at least from the high end of the inclined part toward the low end of the inclined part, and the door body generates a downward displacement in the vertical direction.

[0013] Secondly, embodiments of this application provide a refrigerator, including a cabinet, a door, and a gravity-operated self-closing structure. The door is used to close or open the receiving cavity of the cabinet. The gravity-operated self-closing structure is disposed at the lower end of the door and includes a fixed member and a movable member. The fixed member is disposed in the cabinet, and the movable member is disposed in the door. The movable member is provided with a track groove facing the fixed member. The fixed member is provided with a first hinge shaft and a second hinge shaft, which are movable along the extension direction of the track groove. The movable member is provided with an abutment portion facing the fixed member. The fixed member also has an inclined portion facing the movable member, with a first end of the inclined portion higher than a second end, and the inclined portion tilting downward from the first end to the second end. During the rotational closing of the door, the first hinge shaft and the second hinge shaft move within the track groove along the extension direction of the track groove, and the abutment portion at least abuts against the inclined portion. The abutment portion moves from the first end of the inclined portion towards the second end of the inclined portion, causing the door to undergo a downward displacement in the vertical direction.

[0014] By adopting the above technical solution, during the process of the door rotating and closing, the hinge shaft can move from the second end of the track groove toward the first end of the track groove, and the abutment part moves at least from the first end of the inclined part toward the second end of the inclined part. The door body generates a downward displacement in the vertical direction, thereby making the connection between the door body and the box body tighter.

[0015] Because the door has a certain weight, during the door's rotation to open, this weight must be overcome to allow the door to move the abutment from the second end of the inclined section to the first end. This allows the inclined section to limit the movement of the abutment, reducing the possibility of it shifting. Furthermore, during the door's rotation to close, when the abutment contacts the inclined section, it can move towards the second end of the inclined section under the door's weight, making the movement from the inclined section to the second contact point easier. When the door is closed to seal the cavity, this reduces the possibility of gaps between the door and the housing, improving the cavity's sealing. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of a refrigerator according to an exemplary embodiment;

[0017] Figure 2 is an explosion diagram of a gravity self-closing structure according to an exemplary embodiment;

[0018] Figure 3 is a schematic diagram of the structure of a hinge plate located at the upper end of a door according to an exemplary embodiment;

[0019] Figure 4 is a schematic diagram showing the relative positions of the fixed and movable parts in a gravity self-closing structure according to an exemplary embodiment.

[0020] Figure 5 is a schematic diagram showing the abutting portion located at the first contact portion according to an exemplary embodiment;

[0021] Figure 6 is a schematic diagram of a gravity self-closing structure from another perspective in Figure 5 of an embodiment of this application;

[0022] Figure 7 is a schematic diagram showing the abutting portion located in the inclined portion according to an exemplary embodiment;

[0023] Figure 8 is a schematic diagram of a gravity self-closing structure from another perspective in Figure 7 of an embodiment of this application;

[0024] Figure 9 is a schematic diagram showing the abutting portion located at the second end of the inclined portion according to an exemplary embodiment;

[0025] Figure 10 is a schematic diagram of a gravity self-closing structure from another perspective in Figure 9 of an embodiment of this application;

[0026] Figure 11 is a schematic diagram showing the first hinge axis located at the second end of the track groove according to an exemplary embodiment;

[0027] Figure 12 is a schematic diagram showing the first hinge axis located at the first inflection point according to an exemplary embodiment;

[0028] Figure 13 is a schematic diagram showing the first hinge shaft located in the first groove segment according to an exemplary embodiment;

[0029] Figure 14 is a schematic diagram showing the second hinge shaft located at the first end of the track groove according to an exemplary embodiment;

[0030] Figure 15 is a schematic diagram showing that when the abutting portion abuts against the first end of the inclined portion according to an exemplary embodiment, the first hinge shaft is located in the first groove segment.

[0031] Figure 16 is a schematic diagram showing the first hinge shaft and the second hinge shaft located in the first groove segment according to an exemplary embodiment;

[0032] Figure 17 is a schematic diagram showing the hinge shaft located at the second end of the track groove according to an exemplary embodiment;

[0033] Figure 18 is a schematic diagram showing the hinge axis located at the first inflection point according to an exemplary embodiment;

[0034] Figure 19 is a schematic diagram showing the hinge shaft located in the first groove segment according to an exemplary embodiment;

[0035] Figure 20 is a schematic diagram showing the hinge shaft located at the first end of the track groove according to an exemplary embodiment;

[0036] Figure 21 is a structural schematic diagram of a movable member showing a first abutting surface, a second abutting surface, and a third abutting surface according to an exemplary embodiment;

[0037] Figure 22 is a schematic diagram of the structure of a movable member having a columnar abutment portion according to an exemplary embodiment;

[0038] Figure 23 is a schematic diagram of the structure of a movable member having a roller-type abutment portion according to an exemplary embodiment;

[0039] Figure 24 is a schematic diagram of the connection structure between the fastener and the hinge plate according to an exemplary embodiment;

[0040] Figure 25 is a schematic diagram of the structure of the adjustment plate according to an exemplary embodiment;

[0041] Figure 26 is a schematic diagram of the structure of the adjustment plate and the connector according to an exemplary embodiment;

[0042] Figure 27 is a schematic diagram showing the structure of the lock hook and the stop part cooperating when the door is opened, according to an exemplary embodiment;

[0043] Figure 28 is a schematic diagram showing the structure of the lock hook and the stop part cooperating when the door is closed, according to an exemplary embodiment;

[0044] Figure 29 is a schematic diagram of the structure of an end cap, bushing and hinge plate provided at the upper end of a door according to an exemplary embodiment. Embodiments of the present invention

[0045] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0046] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0047] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0048] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] In related technologies, refrigerators include a cabinet and a door. The cabinet has a cavity for storing food or other items, and the door is movably disposed on the cabinet to close or open the cavity. For example, the door can be rotatably disposed on the cabinet; when the door is against the cabinet, it closes the cavity; when an angle is formed between the door and the cabinet, it opens the cavity to allow food or other items to be retrieved or placed inside.

[0053] However, when the door is rotated to close the receiving cavity, the door moves toward the receiving cavity. When the door is in contact with the surface of the box, due to the influence of changes in air pressure inside the receiving cavity, the door is prone to popping off the surface of the box, resulting in a gap between the door and the surface of the box, thus affecting the sealing of the receiving cavity.

[0054] In view of this, in the refrigerator of the present application embodiment, during the process of the door rotating and closing, the hinge shaft can move from the second end of the track groove toward the first end of the track groove, the abutting part moves toward the first contact part and the inclined part in sequence, the abutting part can move from the first end of the first contact part to the inclined part, and can move downward from the first end of the inclined part toward the second end of the inclined part.

[0055] Because the door has a certain weight, during the door's rotation and opening process, this weight needs to be overcome so that the door can move the abutment part from the second end of the inclined section to the first end. This allows the inclined section to limit the abutment part, reducing the possibility of it moving further. Furthermore, during the door's rotation and closing process, when the abutment part contacts the inclined section, it can move towards the second end of the inclined section under the influence of the door's weight, making the movement from the inclined section to the second contact part easier. When the abutment part faces the inclined section, the first and second hinge axes are located on either side of the abutment part, supporting the moving parts and making their movement more stable. When the door is closed to seal the cavity, this reduces the possibility of gaps between the door and the housing, improving the cavity's sealing.

[0056] Referring to FIG1, an embodiment of this application provides a refrigerator, which includes a cabinet 100 having a receiving cavity.

[0057] The cabinet 100 includes an inner liner defining a receiving cavity, an outer shell connected to the outside of the inner liner to form the appearance of a refrigerator, and a heat insulation layer disposed between the inner liner and the outer shell to insulate the receiving cavity.

[0058] The cabinet 100 may define multiple accommodating cavities. In this embodiment, the multiple accommodating cavities may include a refrigerator compartment and a freezer compartment located below the refrigerator compartment. It should be noted that the types and arrangements of the multiple accommodating cavities of the refrigerator are not limited to this.

[0059] The front end of the receiving cavity has a pick-and-place opening, through which the user can place food into or remove food from the receiving cavity.

[0060] The refrigerator also includes a door 200 connected to the cabinet 100 to open and close the receiving cavity, and the cabinet 100 is provided with a rotatable door 200 to open or close the receiving cavity's access port.

[0061] For example, the door 200 can be rotatably connected to the housing 100 by a hinge assembly located at the upper part of the door 200 and a hinge assembly located at the lower part of the door 200.

[0062] As shown in Figures 1 and 3, the door 200 may have a rear wall 202 that is close to the housing 100 when the door 200 is closed, a front wall 201 that is away from the housing 100 when the door 200 is closed, and a side wall 203 connecting the rear wall 202. The front wall 201 and the rear wall 202 are arranged opposite to each other, and the front wall 201 and the side wall 203 are connected to form a front edge, and the rear wall 202 and the side wall 203 are connected to form a rear edge. The rear edge and the front edge are arranged parallel to each other.

[0063] In some possible implementations, the hinge assembly may be located close to the door sidewall so that the door 200 can rotate relative to the housing 100 via the hinge assembly to close or open the receiving cavity via the door 200.

[0064] For example, when the hinge assembly is located on the right side of the housing 100, the right side wall of the door 200 can be configured as a door side wall. When the hinge assembly is located on the left side of the housing 100, the left side wall of the door 200 can be configured as a door side wall.

[0065] A door seal can be provided on the rear wall of the door 200. When the door 200 is closed, the door seal surrounds the access opening and fits against the front face of the cabinet 100 to effectively seal the connection between the door 200 and the cabinet 100, thereby ensuring that the door 200 seals the access opening and preventing cold air from escaping. For example, the door seal can be in the shape of a ring.

[0066] For example, hinge assemblies can be provided at both the upper and lower ends of the door body 200. For the hinge assembly located at the upper end of the door body 200, as shown in Figure 3, the hinge assembly may include a hinge plate 360 ​​connected to the upper end of the housing 100, at least one hinge shaft 301, and a defining shaft connected to the hinge plate 360 ​​to form a guide for the movement of the door body 200. The hinge plate 360 ​​and the hinge shaft 301 may be integrally formed, or they may be provided separately and assembled together.

[0067] The number of hinge axes 301 can be set to one. Alternatively, the number of hinge axes 301 can also be set to at least two. For example, the number of hinge axes 301 can be set to two, with the two hinge axes 301 being the first hinge axis 310 and the second hinge axis 320, respectively.

[0068] For the hinge assembly located at the upper end of the door body 200, the hinge assembly may include a guide member connected to the upper end of the door body 200. The guide member may be provided with a track groove 420. The track groove 420 may accommodate the hinge shaft 301, thereby enabling the door body 200 to open or close through the sliding process of the hinge shaft 301 within the track groove 420.

[0069] A refrigerator also includes a refrigeration unit that supplies cold air to the compartment to achieve the refrigerator's refrigeration or freezing function.

[0070] Referring to Figures 1 and 2, in some embodiments, the refrigerator may further include a gravity-operated self-closing structure. The gravity-operated self-closing structure may be disposed at the lower end of the door 200, and may include a cooperating fixing member 300 and a moving member 400.

[0071] The fixed member 300 can be fixedly installed on the housing 100, and the movable member 400 can be fixedly installed on the door 200. The movable member 400 and the fixed member 300 can be arranged vertically. The hinge assembly located at the lower end of the door 200 can be reused to form at least one of the fixed member 300 and the movable member 400, so as to facilitate the formation process of the gravity self-closing structure.

[0072] Alternatively, the fastener 300 can be fixedly installed on the door 200, and the movable part 400 can be fixedly installed on the box 100.

[0073] When the door 200 is rotated to the closed state, the door 200 can move toward the box 100 through the gravity self-closing structure. The door 200 can move vertically relative to the fixed part 300 under the drive of the movable part 400, so that the door 200 can abut against the box 100.

[0074] When the door 200 needs to be rotated to open, the weight of the door 200 needs to be overcome to separate the door 200 from the housing 100, thereby reducing the gap between the door 200 and the housing 100 when the door 200 is in the closed state and improving the sealing of the receiving cavity.

[0075] For example, the refrigerator can be configured as a side-by-side refrigerator, with two doors 200 to seal multiple cavities. Compared to other types of refrigerators such as cross-door refrigerators, the doors 200 of the side-by-side refrigerator are taller and heavier, resulting in better gravity self-closing effect of the doors 200 through the gravity self-closing structure, and increasing the gravity that needs to be overcome when rotating to open the doors 200.

[0076] It should be noted that a suction aid or similar structure can be installed between the door 200 and the cabinet 100 to reduce the gap between them. However, compared to other types of refrigerators such as French door refrigerators, the door 200 of a side-by-side refrigerator is heavier. Side-by-side refrigerators typically cannot achieve a tight seal between the door 200 and the cabinet 100 using only a suction aid. This makes gravity-based self-closing structures more suitable for refrigerators with heavy door 200s, such as side-by-side refrigerators, or other types of refrigerators where the door 200 can support a significant weight, to further improve the sealing effect of the door 200 on the cavity.

[0077] In some embodiments, the height of the door 200 can be set to be greater than or equal to 1700 mm and less than or equal to 2000 mm. For example, the height of the door 200 can be set within any of the following height ranges: 1700 mm-1750 mm, 1750 mm-1800 mm, 1800 mm-1850 mm, 1850 mm-1900 mm, 1900 mm-1950 mm, and 1950 mm-2000 mm.

[0078] The height of the door 200 will affect the gravity of the door 200. For example, when the material and thickness of the door 200 are kept constant, the higher the door 200 is, the greater its weight, and the better the gravity self-closing effect of the door 200 through the gravity self-closing structure.

[0079] Furthermore, when the distance the door 200 moves vertically during the process of rotating to close or open remains constant, the higher the door 200 is, the lower the ratio of the distance the door 200 moves vertically to the height of the door 200, and the less jerky the user feels during the process of rotating to close or open the door 200.

[0080] Each of the aforementioned height ranges may include at least one of the two endpoint values. For example, when the height of the door 200 is set within the range of 1700 mm to 1750 mm, the height of the door 200 may be greater than or equal to 1700 mm and less than or equal to 1750 mm. Alternatively, the height of the door 200 may also be greater than 1700 mm and less than or equal to 1750 mm. Or, the height of the door 200 may be greater than or equal to 1700 mm and less than 1750 mm.

[0081] Alternatively, any of the above height ranges may not include the two endpoint values. For example, when the height of the door 200 is set within the range of 1700 mm to 1750 mm, the height of the door 200 may also be set to be greater than 1700 mm and less than 1750 mm.

[0082] It should be noted that the various numerical ranges appearing in the embodiments of this application, such as the thickness range or weight range that appear later, can all refer to the height range. That is, the numerical range can include at least one of the two endpoint values, or the numerical range may not include the two endpoint values. This will not be elaborated further in the embodiments of this application.

[0083] In some embodiments, the thickness of the door body 200 can be set to be greater than or equal to 45 mm and less than or equal to 65 mm. For example, the thickness of the door body 200 can be set within any height range of 45 mm-48 mm, 48 mm-50 mm, 50 mm-52 mm, 52 mm-55 mm, 55 mm-58 mm, 58 mm-60 mm, 60 mm-62 mm, and 62 mm-65 mm.

[0084] The thickness of the door 200 will affect the gravity of the door 200. For example, when the material and height of the door 200 are kept the same, the thicker the door 200, the greater the weight of the door 200, and the better the gravity self-closing effect of the door 200 through the gravity self-closing structure.

[0085] The weight of the door body 200 can be set to less than or equal to 10 kg. For example, the weight of the door body 200 can be set to any of the following weight ranges: 5 kg-6 kg, 6 kg-7 kg, 7 kg-8 kg, 8 kg-9 kg, and 9 kg-10 kg.

[0086] During the use of the refrigerator, the door 200 can be used to support items of a certain weight, thereby increasing the total weight of the door 200 and improving the gravity self-closing effect of the door 200.

[0087] Alternatively, the weight of the door 200 can be set to be greater than or equal to 10 kg and less than or equal to 30 kg. For example, the weight of the door 200 can be set within any weight range of 10 kg-15 kg, 15 kg-20 kg, 20 kg-25 kg, and 25 kg-30 kg, so that the connection between the door 200 and the housing 100 can be made tighter by the gravity of the door 200.

[0088] In some embodiments, referring to Figures 2 and 4, a ramp 300a is formed on the surface of the fixing member 300 facing the moving member 400. The ramp 300a is located on the path of the door 200 during opening or closing. During the opening or closing of the door 200, the ramp 300a contacts the moving member 400, causing the door 200 to have a downward tendency when it is closed, and through the action of gravity of the door 200, the connection between the door 200 and the housing 100 is made tighter.

[0089] In some embodiments, ramp 300a may be part of the surface of fastener 300. Ramps 300a may be integrally formed during the formation of fastener 300.

[0090] In some embodiments, the ramp 300a includes a first contact portion 330 and an inclined portion 340. The inclined portion 340 is connected to the first contact portion 330. The inclined portion 340 is an inclined surface, and the high end of the inclined portion 340 is connected to the first contact portion 330.

[0091] In some embodiments, the ramp 300a includes a first contact portion 330, an inclined portion 340, and a second contact portion 350. The inclined portion 340 connects the first contact portion 330 and the second contact portion 350. The inclined portion 340 is an inclined surface, with its high end connected to the first contact portion 330 and its low end connected to the second contact portion 350.

[0092] The first contact portion 330, the inclined portion 340, and the second contact portion 350 constitute the surface of the fixing member 300 facing the moving member 400.

[0093] In some embodiments, referring to FIG4, the surface of the fixing member 300 facing the moving member 400 may be provided with an inclined portion 340. The inclined portion 340 may have a high end and a low end. The high end of the inclined portion 340 may be set as the first end of the inclined portion, and the low end of the inclined portion 340 may be set as the second end of the inclined portion.

[0094] In some embodiments, the inclined portion 340 is part of the surface of the fastener 300.

[0095] The fastener 300 may include a first contact portion 330. The first contact portion 330 may be disposed parallel to the horizontal plane. Alternatively, the first contact portion 330 may be disposed at an angle to the horizontal plane. For example, the end of the first contact portion 330 away from the inclined portion 340 may be inclined upward or downward.

[0096] The first end of the inclined portion 340 is connected to the first contact portion 330, and the second end of the inclined portion 340 is connected to the second contact portion 350. The first end of the inclined portion 340 is higher than the second end of the inclined portion 340, and the inclination angle of the inclined portion 340 is greater than the inclination angle of the first contact portion 330.

[0097] As shown in Figure 2, the inclined portion 340 can extend obliquely along the width direction of the fixing member 300. As shown in Figure 8, the end line 340b of the first end of the inclined portion 340 intersects obliquely with the wide side of the fixing member 300, and the end line 340a of the second end of the inclined portion 340 intersects obliquely with the wide side of the fixing member 300. In other words, the oblique extension of the inclined portion 340 along the width direction makes the door body 200 move downward from the first end to the second end of the inclined portion 340 more smoothly.

[0098] During the rotational opening or closing of the door 200, when the first hinge axis 310 and the second hinge axis 320 move within the first groove section 421, the line connecting the first hinge axis 310 and the second hinge axis 320 can be perpendicular to the end line 340b where the first end of the inclined portion 340 is located and the end line 340a where the second end is located. This allows the door 200 to move more smoothly upwards or downwards.

[0099] The surface of the movable part 400 facing the fixed part 300 may be provided with an abutment part 410. During the rotation and opening of the door 200, the abutment part 410 can move obliquely upward from the second end of the inclined part 340 to the first end of the inclined part 340, and then move to the first contact part 330 through the first end of the inclined part 340, thereby realizing the opening process of the door 200.

[0100] During the process of rotating and closing the door 200, the abutment part 410 can move from the first contact part 330 to the first end of the inclined part 340, and then move downward from the first end of the inclined part 340 to the second end of the inclined part 340, thereby realizing the closing process of the door 200.

[0101] Alternatively, the surface of the fixing member 300 facing the movable member 400 may be provided with a first contact portion 330, an inclined portion 340, and a second contact portion 350 connected in sequence. The first end of the inclined portion 340 is connected to the first contact portion 330, and the second end of the inclined portion 340 is connected to the second contact portion 350. The first end of the inclined portion 340 is higher than the second end of the inclined portion 340, and the first contact portion 330 is closer to the movable member 400 relative to the second contact portion 350.

[0102] At least one of the first contact portion 330 and the second contact portion 350 may be arranged parallel to the horizontal plane. For example, the first contact portion 330 and the second contact portion 350 may be arranged parallel to the horizontal plane. Alternatively, one of the first contact portion 330 and the second contact portion 350 may be arranged parallel to the horizontal plane, while the other of the first contact portion 330 and the second contact portion 350 may be arranged at an angle.

[0103] For example, the end of the first contact portion 330 that is away from the inclined portion 340 can be tilted upwards or downwards. The tilt angle of the first contact portion 330 can be greater than the tilt angle of the inclined portion 340. Alternatively, the tilt angle of the first contact portion 330 can be less than the tilt angle of the inclined portion 340. The second contact portion 350 can be arranged parallel to the horizontal plane.

[0104] The first contact portion 330 can be arranged parallel to the horizontal plane. The end of the second contact portion 350 away from the inclined portion 340 can be tilted upward or downward. The tilt angle of the second contact portion 350 can be greater than the tilt angle of the inclined portion 340. Alternatively, the tilt angle of the second contact portion 350 can be less than the tilt angle of the inclined portion 340.

[0105] Alternatively, the end of the first contact portion 330 away from the inclined portion 340 can be tilted upwards or downwards. The tilt angle of the first contact portion 330 can be greater than or less than the tilt angle of the inclined portion 340. The end of the second contact portion 350 away from the inclined portion 340 can be tilted upwards or downwards. The tilt angle of the second contact portion 350 can be greater than or less than the tilt angle of the inclined portion 340.

[0106] In some embodiments, the surface of the movable member 400 facing the fixed member 300 may be provided with an abutment portion 410. The abutment portion 410 may be used to abut against the first contact portion 330, the inclined portion 340, and the second contact portion 350. When the opening angle φ of the door body 200 is set to 0 degrees, that is, when the door body 200 is in the closed state, the bottom of the abutment portion 410 may abut against the second contact portion 350.

[0107] It should be noted that when the refrigerator is set as a side-by-side refrigerator, during the process of the door 200 rotating to open or close, the door 200 needs to move in the horizontal direction and the door 200 needs to move in the vertical direction relative to the fixed part 300 under the drive of the movable part 400. This means that the first hinge shaft 310 and the second hinge shaft 320 in the gravity self-closing structure not only need to drive the door 200 to move in the horizontal direction, but also need to bear the gravity from the door 200. Due to the large weight of the door 200, the first hinge shaft 310 and the second hinge shaft 320 are prone to deformation or even breakage due to excessive stress.

[0108] Therefore, by providing the abutment part 410 and using it in conjunction with the fixing member 300, the abutment part 410 can share part of the weight of the door body 200, allowing part of the weight of the door body 200 to be transferred to the fixing member 300 through the abutment part 410, and part of the weight of the door body 200 to be transferred to the first hinge shaft 310 and the second hinge shaft 320, thereby reducing the force on the first hinge shaft 310 and the second hinge shaft 320, and thus reducing the possibility of deformation of the first hinge shaft 310 and the second hinge shaft 320.

[0109] It should be noted that the opening angle φ of the door 200 can be determined according to the relative position of the door 200 and the box 100. Taking the door 200 located on the left side of the box 100 as an example, the opening angle φ of the door 200 can be equal to the angle between the horizontal line perpendicular to the left side of the box 100 and the door 200 facing the surface of the box 100.

[0110] For example, the opening angle φ of the door 200 can be set as the difference between the angle between the horizontal line inside the left side of the box 100 and the horizontal line of the door 200 facing the surface of the box 100, and 90 degrees. Furthermore, when the door 200 is in the closed state, if the angle between the horizontal line inside the left side of the box 100 and the horizontal line of the door 200 facing the surface of the box 100 is less than 90 degrees, the opening angle φ of the door 200 can also be less than 0 degrees.

[0111] The following describes the relative motion relationship between the abutment portion 410 and the fixing member 300 during the rotational opening or closing of the door body 200, taking the fixing member 300 as an example, which is provided with a first contact portion 330, an inclined portion 340 and a second contact portion 350.

[0112] During the process of rotating and opening the door 200, the abutment part 410 can move from the second contact part 350 to the second end of the inclined part 340, then move upward from the second end of the inclined part 340 to the first end of the inclined part 340, and then move to the first contact part 330 through the first end of the inclined part 340, thereby realizing the opening process of the door 200.

[0113] During the process of rotating and closing the door 200, the abutment part 410 can move from the first contact part 330 to the first end of the inclined part 340, then move downward from the first end of the inclined part 340 to the second end of the inclined part 340, and then move to the second contact part 350 through the second end of the inclined part 340, thereby realizing the closing process of the door 200.

[0114] It should be noted that the door 200 has a certain weight. During the process of rotating and opening the door 200, it is necessary to overcome the weight of the door 200 so that the door 200 can drive the abutment part 410 to move from the second end of the inclined part 340 to the first end of the inclined part 340. In this way, the inclined part 340 plays a certain limiting role on the abutment part 410, reducing the possibility of the abutment part 410 moving.

[0115] During the process of the door 200 rotating and closing, when the abutting part 410 abuts against the inclined part 340, the abutting part 410 can move towards the second end of the inclined part 340 under the action of the gravity of the door 200, thereby making it more convenient for the door 200 to move from the inclined part 340 to the second contact part 350.

[0116] For example, when the abutment part 410 moves to the second contact part 350, the door seal located on the rear wall of the door can surround the access opening, so that the door seal fits against the front end face of the box 100 to effectively seal the connection between the door 200 and the box 100. Thus, the gravity self-closing structure and the door seal work together to ensure that the door 200 seals the access opening and prevents cold air from escaping.

[0117] When the abutment portion 410 is located on the surface of the second contact portion 350, the bottom of the abutment portion 410 can abut against the surface of the second contact portion 350, and the bottom of the abutment portion 410 can be slidably disposed on the second contact portion 350, so that part of the weight of the door body 200 can be transmitted to the second contact portion 350 through the abutment portion 410, and part of the weight of the door body 200 can be transmitted to the first hinge shaft 310 and the second hinge shaft 320, thereby increasing the support of the fixing member 300 for the door body 200.

[0118] With the second contact portion 350 spaced apart from the abutment portion 410, by abutting the bottom of the abutment portion 410 against the surface of the second contact portion 350, the abutment portion 410 and the second contact portion 350 come into contact. The second contact portion 350 can bear part of the weight of the door body 200, reducing the force on the first hinge shaft 310 and the second hinge shaft 320, thereby reducing the possibility of deformation of the first hinge shaft 310 and the second hinge shaft 320.

[0119] Alternatively, the bottom of the abutment portion 410 (e.g., the subsequent first abutment surface 411) may be spaced apart from the second contact portion 350. When the abutment portion 410 is located on the surface of the second contact portion 350, the bottom of the abutment portion 410 may be spaced apart from the second contact portion 350. The distance between the bottom of the abutment portion 410 and the second contact portion 350 may be greater than or equal to 0.5 mm and less than or equal to 3 mm.

[0120] For example, the distance between the bottom of the abutment portion 410 and the second contact portion 350 can be set within any of the following ranges: 0.5 mm-1 mm, 1 mm-1.5 mm, 1.5 mm-2 mm, 2 mm-2.5 mm, and 2.5 mm-3 mm, in order to reduce the friction between the abutment portion 410 and the second contact portion 350, reduce the wear of the abutment portion 410, and reduce the possibility of the abutment portion 410 being squeezed and deformed.

[0121] Furthermore, the distance between the bottom of the abutment portion 410 and the second contact portion 350 can be determined based on parameters such as the thickness of the door body 200, the height of the door body 200, and the assembly space of the gravity self-closing structure. For example, the larger the assembly space of the gravity self-closing structure, the greater the distance between the bottom of the abutment portion 410 and the second contact portion 350 can be. Conversely, the smaller the distance between the bottom of the abutment portion 410 and the second contact portion 350, the more compact the positions of the fixing member 300 and the moving member 400, and the smaller the assembly space required for the gravity self-closing structure.

[0122] The positions of the tilting portion 340 and the second contact portion 350 can be determined according to the opening angle φ of the door body 200. For example, the opening angle φ of the door body 200 can have a first set angle, a second set angle, and a third set angle that decrease sequentially. Specifically, when the opening angle φ of the door body 200 is set to the second set angle, the abutting portion 410 abuts against the first end of the tilting portion 340. When the opening angle φ of the door body 200 is set to the third set angle, the abutting portion 410 abuts against the second end of the tilting portion 340.

[0123] For example, when the opening angle φ of the door 200 is set to 130 degrees, the opening angle φ of the door 200 is set to a first set angle, and the abutment portion 410 is located at the end of the first contact portion 330 away from the inclined portion 340. When the opening angle φ of the door 200 is set to 30 degrees ≤ φ ≤ 130 degrees, the abutment portion 410 abuts against the first contact portion 330. When the opening angle φ of the door 200 is 30 degrees, the opening angle φ of the door 200 is set to a second set angle, and the abutment portion 410 abuts against the first end of the inclined portion 340. When the opening angle φ of the door 200 is 15 degrees, the opening angle φ of the door 200 is set to a third set angle, and the abutment portion 410 abuts against the second end of the inclined portion 340. When the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 15 degrees, the abutment portion 410 abuts against the second contact portion 350.

[0124] Phase 1

[0125] During the rotation and closing of the door 200, when the opening angle φ of the door 200 is set to 130 degrees, the opening angle φ of the door 200 is set to the first set angle, and the abutment part 410 is located at the end of the first contact part 330 away from the inclined part 340. When the opening angle of the door 200 is 30 degrees < φ ≤ 130 degrees, as shown in Figures 5 and 6, the abutment part 410 abuts against the first contact part 330, and the abutment part 410 moves from the end of the first contact part 330 away from the inclined part 340 toward the inclined part 340. When the opening angle φ of the door 200 is 30 degrees, the door 200 is at the second set angle, as shown in Figures 7 and 8, and the abutment part 410 can move to the first end of the inclined part 340.

[0126] Phase Two

[0127] When the opening angle φ of the door 200 is set to 15 degrees ≤ φ ≤ 30 degrees, the abutment part 410 abuts against the inclined part 340, and the door 200 can move the abutment part 410 downward under the action of gravity, so that the abutment part 410 moves from the first end of the inclined part 340 to the second end of the inclined part 340, and the movable part 400 drives the door 200 downward through the abutment part 410; when the opening angle φ of the door 200 is 15 degrees, the door 200 is at the third set angle, as shown in Figures 10 and 11, and the abutment part 410 moves to the second end of the inclined part 340.

[0128] Phase Three

[0129] When the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 15 degrees, the abutting part 410 abuts against the second contact part 350, thereby driving the abutting part 410 to move towards the end of the second contact part 350 away from the inclined part 340; when the opening angle φ of the door 200 is ≤ 5 degrees, the abutting part 410 abuts against the second contact part 350, and the door seal on the rear wall of the door 200 fits against the front end face of the box 100, thereby effectively sealing the connection between the door 200 and the box 100.

[0130] It should be noted that when the user pushes the door 200 to rotate and close it, the door 200 will move downwards as the abutting part 410 abuts against the first contact part 330, the tilting part 340 and the second contact part 350 in sequence, which will cause the user to experience a certain sense of jerkiness. The vertical movement distance of the door 200 can be changed by adjusting the tilting angle of the tilting part 340 and the height difference between the first contact part 330 and the second contact part 350, thereby reducing the user's sense of jerkiness during the closing process and improving the user experience.

[0131] For example, the first set angle, second set angle and third set angle of the door body 200 can be changed by adjusting the position and length of the first contact part 330, the tilting part 340 and the second contact part 350 in the horizontal direction, so as to change the time of the first stage, the second stage and the third stage during the rotation and closing process of the door body 200.

[0132] The angle corresponding to the first contact portion 330 is equal to the difference between the first set angle and the second set angle. The angle corresponding to the tilting portion 340 is equal to the difference between the second set angle and the third set angle. The angle corresponding to the second contact portion 350 is equal to the third set angle.

[0133] For example, during the rotation and closing of the door 200, when the length of the first contact portion 330 increases, the movement time of the abutment portion 410 in the horizontal direction of the first contact portion 330 increases. When the length of the inclined portion 340 in the horizontal direction increases, the movement time of the abutment portion 410 in both the horizontal and vertical directions of the inclined portion 340 increases, and the difference between the second set angle and the third set angle increases; when the length of the second contact portion 350 increases, the movement time of the abutment portion 410 in the horizontal direction of the first contact portion 330 increases.

[0134] Furthermore, the position of the second set angle of the door body 200 can be changed by adjusting the position of the first end of the tilting part 340 in the horizontal direction, and the position of the third set angle of the door body 200 can be adjusted by adjusting the position of the second end of the tilting part 340 in the horizontal direction, so as to determine the movement time of the door body 200 in the vertical direction.

[0135] The angle corresponding to the tilting part 340 (for example, the difference between the second set angle and the third set angle) can be set to be greater than or equal to 5 degrees and less than or equal to 20 degrees. The abutting part 410 moves from the first end of the tilting part 340 to the second end of the tilting part 340, and the rotation angle of the door body 200 is greater than or equal to 5 degrees and less than or equal to 20 degrees.

[0136] For example, the angle corresponding to the tilting part 340 (i.e., the difference between the second set angle and the third set angle) can be set within any angle range of 5-10 degrees, 10-15 degrees, and 15-20 degrees to reduce the user's sense of jerkiness during the closing process.

[0137] In some embodiments, the length of the first contact portion 330 in the horizontal direction may be equal to the length of the second contact portion 350. Alternatively, the length of the first contact portion 330 in the horizontal direction may be greater than the length of the second contact portion 350, and the length of the first contact portion 330 may be greater than the length of the inclined portion 340.

[0138] For example, in the horizontal direction, the length of the first contact portion 330 is greater than or equal to three times the length of the inclined portion 340, that is, the difference between the first set angle and the second set angle is greater than or equal to three times the difference between the second set angle and the third set angle.

[0139] For example, when the opening angle φ of the door 200 is set to 130 degrees, the opening angle φ of the door 200 is set to a first set angle, and the abutment portion 410 is located at the end of the first contact portion 330 away from the inclined portion 340. When the opening angle φ of the door 200 is set to 20 degrees ≤ φ ≤ 130 degrees, the abutment portion 410 can abut against the first contact portion 330. When the opening angle φ of the door 200 is 20 degrees, the opening angle φ of the door 200 is set to a second set angle, and the abutment portion 410 abuts against the first end of the inclined portion 340. The difference between the first set angle and the second set angle is 110 degrees.

[0140] When the opening angle φ of the door 200 is 5 degrees, the opening angle φ of the door 200 is set to the third set angle, and the abutment part 410 abuts against the second end of the inclined part 340. The difference between the second set angle and the third set angle is 15 degrees. When the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 5 degrees, the abutment part 410 abuts against the second contact part 350.

[0141] Phase 1

[0142] During the rotation and closing of the door 200, when the opening angle φ of the door 200 is set to 130 degrees, the opening angle φ of the door 200 is set to the first set angle, and the abutment part 410 is located at the end of the first contact part 330 away from the inclined part 340. When the opening angle of the door 200 is 20 degrees < φ ≤ 130 degrees, the abutment part 410 abuts against the first contact part 330, and the abutment part 410 moves from the end of the first contact part 330 away from the inclined part 340 toward the inclined part 340. When the opening angle φ of the door 200 is 20 degrees, the door 200 is at the second set angle, and the abutment part 410 can move to the first end of the inclined part 340.

[0143] Phase Two

[0144] When the opening angle φ of the door 200 is set to 5 degrees ≤ φ ≤ 20 degrees, the abutment part 410 abuts against the inclined part 340, and the door 200 can move the abutment part 410 downward under the action of gravity, so that the abutment part 410 moves from the first end of the inclined part 340 to the second end of the inclined part 340, and the movable member 400 drives the door 200 downward through the abutment part 410; when the opening angle φ of the door 200 is 5 degrees, the door 200 is at the third set angle, and the abutment part 410 moves to the second end of the inclined part 340.

[0145] Phase Three

[0146] When the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 5 degrees, the abutment part 410 abuts against the second contact part 350, thereby driving the abutment part 410 to move towards the end of the second contact part 350 away from the inclined part 340. When the opening angle φ of the door 200 is ≤ 5 degrees, the abutment part 410 abuts against the second contact part 350, and the door seal located on the rear wall of the door 200 fits against the front end face of the box 100 to effectively seal the connection between the door 200 and the box 100.

[0147] It should be noted that when the abutment portion 410 has a certain width in the horizontal direction, the abutment portion 410 can correspond to a partial central angle. For example, if the central angle corresponding to the abutment portion 410 is 5 degrees, and the angle corresponding to the second contact portion 350 (i.e., the third set angle) is 5 degrees, then when the abutment portion 410 moves to the second end of the inclined portion 340, the abutment portion 410 moves to the second contact portion 350, and the abutment portion 410 will not move on the second contact portion 350.

[0148] For example, when the opening angle φ of the door 200 is set to 30 degrees, the opening angle φ of the door 200 is set to the first set angle, and the abutment part 410 is located at the end of the first contact part 330 away from the inclined part 340. When the opening angle φ of the door 200 is set to 20 degrees ≤ φ ≤ 30 degrees, the abutment part 410 abuts against the first contact part 330. When the opening angle φ of the door 200 is 20 degrees, the opening angle φ of the door 200 is set to the second set angle, and the abutment part 410 abuts against the first end of the inclined part 340. The difference between the first set angle and the second set angle is 10 degrees.

[0149] When the opening angle φ of the door 200 is 5 degrees, the opening angle φ of the door 200 is set to the third set angle, and the abutment part 410 abuts against the second end of the inclined part 340. The difference between the second set angle and the third set angle is 15 degrees. When the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 5 degrees, the abutment part 410 abuts against the second contact part 350.

[0150] Phase 1

[0151] During the rotation and closing of the door 200, when the opening angle φ of the door 200 is set to 30 degrees, the opening angle φ of the door 200 is set to the first preset angle, and the abutment part 410 is located at the end of the first contact part 330 away from the inclined part 340. When the opening angle of the door 200 is 20 degrees < φ ≤ 30 degrees, the abutment part 410 abuts against the first contact part 330. The abutment part 410 moves from the end of the first contact part 330 away from the inclined part 340 toward the inclined part 340. When the opening angle φ of the door 200 is 20 degrees, the door 200 is at the second preset angle, and the abutment part 410 can move to the first end of the inclined part 340.

[0152] Phase Two

[0153] When the opening angle φ of the door 200 is set to 5 degrees ≤ φ ≤ 20 degrees, the abutment part 410 abuts against the inclined part 340, and the door 200 can move the abutment part 410 downward under the action of gravity, so that the abutment part 410 moves from the first end of the inclined part 340 to the second end of the inclined part 340, and the movable part 400 drives the door 200 downward through the abutment part 410.

[0154] When the opening angle φ of the door 200 is 5 degrees, the door 200 is at the third set angle, the abutment part 410 moves to the second end of the inclined part 340, the bottom surface of the abutment part 410 is completely attached to the second contact part 350, and the door seal on the rear wall of the door 200 is attached to the front end of the box 100 to effectively seal the connection between the door 200 and the box 100.

[0155] It should be noted that when the bottom of the abutting part 410 does not have width in the horizontal direction, for example, the abutting part 410 can be set as a triangular abutting part 410, with the first surface of the abutting part 410 arranged parallel to the inclined part 340 and the second surface of the abutting part 410 arranged vertically; then the angle of the second contact part 350 can be set to 0 degrees, that is, the second contact part 350 can be omitted, and the third setting angle can be equal to 0 degrees.

[0156] For example, when the opening angle φ of the door 200 is set to 30 degrees, the opening angle φ of the door 200 is set to a first set angle, and the abutment portion 410 is located at the end of the first contact portion 330 away from the inclined portion 340. When the opening angle φ of the door 200 is set to 20 degrees ≤ φ ≤ 30 degrees, the abutment portion 410 abuts against the first contact portion 330. When the opening angle φ of the door 200 is 20 degrees, the opening angle φ of the door 200 is set to a second set angle, and the abutment portion 410 abuts against the first end of the inclined portion 340. The difference between the first set angle and the second set angle is 10 degrees.

[0157] When the opening angle φ of the door 200 is 0 degrees, the opening angle φ of the door 200 is set to the third set angle. The abutting part 410 abuts against the second end of the inclined part 340, and the first surface of the abutting part 410 is completely in contact with the inclined part 340. The difference between the second set angle and the third set angle is 20 degrees.

[0158] Phase 1

[0159] During the rotation and closing of the door 200, when the opening angle φ of the door 200 is set to 30 degrees, the opening angle φ of the door 200 is set to the first set angle, and the abutment part 410 is located at the end of the first contact part 330 away from the inclined part 340. When the opening angle of the door 200 is 20 degrees < φ ≤ 30 degrees, the abutment part 410 abuts against the first contact part 330, and the abutment part 410 moves from the end of the first contact part 330 away from the inclined part 340 toward the inclined part 340. When the opening angle φ of the door 200 is 20 degrees, the door 200 is at the second set angle, and the abutment part 410 can move to the first end of the inclined part 340.

[0160] Phase Two

[0161] When the opening angle φ of the door 200 is set to 0 degrees ≤ φ ≤ 20 degrees, the abutment part 410 abuts against the inclined part 340, and the door 200 can move the abutment part 410 downward under the action of gravity, so that the abutment part 410 moves from the first end of the inclined part 340 to the second end of the inclined part 340, and the movable part 400 drives the door 200 downward through the abutment part 410.

[0162] When the opening angle φ of the door 200 is 0 degrees, the door 200 is at the third set angle, the abutment part 410 moves to the second end of the inclined part 340, and the first surface of the abutment part 410 is completely attached to the inclined part 340. The door seal on the rear wall of the door 200 is attached to the front end of the box 100 to effectively seal the connection between the door 200 and the box 100.

[0163] For example, when the opening angle φ of the door 200 is 130 degrees, the opening angle φ of the door 200 is set to a first set angle. When the opening angle φ of the door 200 is 30 degrees, the opening angle φ of the door 200 is set to a second set angle. When the opening angle φ of the door 200 is 15 degrees, the opening angle φ of the door 200 is set to a third set angle.

[0164] At this time, on the surface of the fixed member 300 facing the movable member 400, the central angle corresponding to the first contact portion 330, the inclined portion 340 and the second contact portion 350 is set to 115 degrees. That is, during the process of the abutting portion 410 moving from the end of the first contact portion 330 away from the second contact portion 350 through the inclined portion 340 to the end of the second contact portion 350 away from the first contact portion 330, the rotation angle of the door body 200 is 115 degrees.

[0165] For example, when the opening angle φ of the door 200 is 30 degrees, the opening angle φ of the door 200 is set to the first set angle. When the opening angle φ of the door 200 is 20 degrees, the opening angle φ of the door 200 is set to the second set angle. When the opening angle φ of the door 200 is 5 degrees, the opening angle φ of the door 200 is set to the third set angle.

[0166] At this time, on the surface of the fixed member 300 facing the movable member 400, the central angle corresponding to the first contact portion 330, the inclined portion 340 and the second contact portion 350 is set to 25 degrees. That is, during the process of the abutting portion 410 moving from the end of the first contact portion 330 away from the second contact portion 350 through the inclined portion 340 to the end of the second contact portion 350 away from the first contact portion 330, the rotation angle of the door body 200 is 25 degrees.

[0167] For example, when the opening angle φ of the door 200 is 30 degrees, the opening angle φ of the door 200 is set to a first set angle. When the opening angle φ of the door 200 is 20 degrees, the opening angle φ of the door 200 is set to a second set angle. When the opening angle φ of the door 200 is 0 degrees, the opening angle φ of the door 200 is set to a third set angle.

[0168] At this time, on the surface of the fixed member 300 facing the movable member 400, the central angle corresponding to the first contact portion 330, the inclined portion 340 and the second contact portion 350 is set to 30 degrees. That is, during the process of the abutting portion 410 moving from the end of the first contact portion 330 away from the second contact portion 350 through the inclined portion 340 to the end of the second contact portion 350 away from the first contact portion 330, the rotation angle of the door body 200 is 30 degrees.

[0169] It should be noted that the second set angle can be set to greater than or equal to 8 degrees and less than or equal to 25 degrees. For example, the second set angle can be set within any of the following angle ranges: 8-10 degrees, 10-12 degrees, 12-14 degrees, 14-16 degrees, 16-18 degrees, 18-20 degrees, 20-22 degrees, and 22-25 degrees.

[0170] When the door 200 is at the third preset angle, the door 200 may not be in a closed state. Alternatively, the door 200 may not be in a closed state.

[0171] The third setting angle can be set to be greater than or equal to -5 degrees, less than or equal to 10 degrees, and less than the second setting angle. For example, the third setting angle can be set within any of the following angle ranges: -5 degrees to 0 degrees, 0 degrees to 5 degrees, 5 degrees to 8 degrees, 8 degrees to 10 degrees, 10 degrees to 12 degrees, 12 degrees to 15 degrees, 15 degrees to 18 degrees, and 18 degrees to 20 degrees.

[0172] During the process of the door 200 rotating to open or close, the user pulls or pushes the door 200 to rotate around the first hinge axis 310 and the second hinge axis 320. When the door 200 rotates to between the second set angle and the third set angle, the door 200 moves vertically relative to the fixed member 300 under the drive of the movable member 400.

[0173] During the process of the door 200 rotating and opening, the door 200 can rotate from the third set angle to the second set angle, the opening angle of the door 200 gradually increases, and the door 200 moves upward in the vertical direction under the action of the abutment part 410.

[0174] The smaller the angle of the third setting angle, the sooner the user will feel the door 200 rising during the opening process. The smaller the angle of the second setting angle, the sooner the user will feel the end of the door 200 rising process during the opening process. The smaller the difference between the second and third setting angles, the shorter the door 200 rising process will feel to the user during the opening process.

[0175] During the process of the door 200 rotating and closing, the door 200 can rotate from the second set angle to the third set angle, the opening angle of the door 200 gradually decreases, and the door 200 drives the abutment part 410 to move downward in the vertical direction.

[0176] The smaller the second set angle, the sooner the user will feel the door 200 descending during the closing process. The smaller the third set angle, the sooner the user will feel the door 200 descending process ending during the opening process. The smaller the difference between the second and third set angles, the shorter the door 200 descending process will feel for the user during the opening process.

[0177] In some embodiments, the refrigerator can be installed inside a cabinet. In an embedded refrigerator where the front wall of the door 200 is flush with the front end of the cabinet wall when the door 200 is closed, interference occurs between the front wall and the cabinet wall after the door 200 is opened to the point where the front wall and the cabinet wall are on the same plane (e.g., the door 200 is opened approximately 90°), preventing the door 200 from being opened further. That is, the maximum opening angle of the door 200 is 90°, which affects the user's ability to access items inside the refrigeration unit.

[0178] For example, during the rotation and opening of the door 200, the movement trajectory of the door 200 can be controlled in the following stages: as the door 200 continues to open from the preset opening angle to the maximum opening angle, the door 200 is moved from the opening side to the pivoting side. This can avoid interference between the door 200 and the cabinet wall when the door 200 is further opened, thereby increasing the opening angle of the door 200 (e.g., greater than 120°), making it easier for users to store and retrieve items.

[0179] In some embodiments, the hinge assembly may be configured such that, before the door 200 is rotated open to a preset opening angle, the door 200 moves first to the opening side and then to the pivoting side while rotating open.

[0180] During the rotation and opening of the door 200, the door 200 first moves towards the opening side, that is, the door gradually moves away from the cabinet wall located on the pivot side. This increases the distance between the end of the door 200 on the pivot side and the cabinet wall on the pivot side, thus avoiding interference with the cabinet wall. On the one hand, even if the built-in refrigerator is seamlessly integrated into the cabinet, interference between the door 200 and the cabinet wall can be avoided during the opening process. On the other hand, it provides more space for the door 200 to move towards the pivot side during subsequent further opening, avoiding interference between the door 200 and the cabinet wall during the opening process.

[0181] After the door 200 moves to the opening side, it moves to the pivot side to further open the door 200, allowing a larger area of ​​the storage space inside the cabinet 100 to be exposed to the user, making it easier for the user to access items.

[0182] It should be noted that the pivot side mentioned above refers to the side of the built-in refrigerator corresponding to the rotating end of the door 200. In other words, the pivot side refers to the side of the cabinet 100 where the door 200 is installed. The opening side mentioned above refers to the side of the built-in refrigerator corresponding to the free end of the door 200. In other words, the opening side refers to the other side of the cabinet 100 opposite to the pivot side where the door 200 is not installed. For example, if the door 200 is installed on the right side of the opening of the cabinet 100, then the pivot side refers to the right side, and the opening side corresponds to the left side of the opening of the cabinet 100.

[0183] In some embodiments, the number of hinge shafts 301 is set to one. As shown in FIG20, when the door 200 is in the closed state, the hinge shaft 301 can be located at the first end of the track groove 420. As shown in FIG17, when the door 200 is in the open state, the hinge shaft 301 can be located at the second end of the track groove 420. During the rotational opening of the door 200, the hinge shaft 301 can move from the first end of the track groove 420 toward the second end of the track groove 420, thereby realizing the rotation of the door 200. As shown in FIG19 and FIG18, the hinge shaft 301 moves step by step from the direction near the first end of the track groove 420 toward the direction near the second end of the track groove 420. Compared with FIG19, the hinge shaft 301 in FIG18 is closer to the second end of the track groove 420; in other words, the door in FIG18 opens at a larger angle.

[0184] For example, the track groove 420 may include a groove wall and an arc-shaped groove bottom that is smoothly connected to the groove wall.

[0185] The end of the hinge shaft 301 that mates with the bottom of the arc-shaped groove can have an arc-shaped end face, the shape of which matches the shape of the bottom of the arc-shaped groove. This enhances the smoothness of the opening and closing of the door body 200, making the fit between the hinge shaft 301 and the track groove 420 tighter and smoother. Of course, this is not a limitation; the hinge shaft 301 can also be directly set as a column, in which case the groove wall and bottom of the track groove 420 are set as a plate that mates with the hinge shaft 301.

[0186] In some embodiments, the shaft portion of the hinge shaft 301 that mates with the track groove 420 is cylindrical. The shaft diameter is the same as the groove width of the track groove 420 to enhance the stability of the hinge mechanism's movement. Of course, this is not a limitation. The shaft portion can also be stepped, as long as the fit between the shaft portion and the track groove 420 allows the door body 200 to move along a preset motion trajectory.

[0187] Specifically, the track groove 420 can extend along the arrangement direction of the pivot side and the opening side. During the rotation and opening of the door 200, the hinge shaft 301 can first move along the track groove 420 towards the end of the track groove 420 closer to the opening side, then move along the track groove 420 towards the end of the track groove 420 closer to the pivot side, and then move along the track groove 420 towards the end of the track groove 420 closer to the opening side. This causes the door 200 to move towards the opening side first, then towards the pivot side, and then towards the opening side again during the rotation and opening process.

[0188] Along the direction from the open side toward the pivot side, the track groove 420 may include a first groove segment 421, a second groove segment 422, and a third groove segment 423 connected in sequence. The end of the first groove segment 421 furthest from the second groove segment 422 is designated as the first end of the track groove 420, and the end of the third groove segment 423 furthest from the second groove segment 422 is designated as the second end of the track groove 420. The first groove segment 421, the second groove segment 422, and the third groove segment 423 form a continuous arc-shaped groove.

[0189] During the process of the door 200 rotating and opening, when the hinge shaft 301 is in the first groove 421 and moving towards the second groove 422, it guides the hinge shaft 301 to move along the track groove 420 towards the opening side, so as to drive the door 200 to move towards the opening side first.

[0190] From Figure 20 to Figure 17, the hinge shaft 301 moves step by step from the first groove segment 421 to the third groove segment 423. As shown in Figure 20, the hinge shaft 301 is located within the first groove segment 421 and at the first end of the track groove 420, at which point the door 200 is in a closed state. As shown in Figure 19, the door 200 opens step by step from the closed state, with the hinge shaft 301 located within the first groove segment 421 and moving towards the second groove segment 422. As shown in Figure 18, the hinge shaft 301 moves to the junction of the first groove segment 421 and the second groove segment 422, further increasing the opening angle of the door 200. As shown in Figure 17, the hinge shaft 301 moves to the third groove segment 423, until it reaches the second end of the track groove 420, at which point the opening angle of the door 200 is at its maximum.

[0191] When the door 200 is rotated open to the point where the hinge shaft 301 is located at the junction of the first groove segment 421 and the second groove segment 422, and continues to rotate open, the hinge shaft 301 moves within the second groove segment 422 and toward the third groove segment 423, guiding the hinge shaft 301 to move along the track groove 420 toward the end of the track groove 420 closer to the pivot side, so as to drive the door 200 to move toward the pivot side.

[0192] When the door 200 is rotated open to the point where the hinge shaft 301 is located at the junction of the second groove segment 422 and the third groove segment 423, and continues to rotate open, the hinge shaft 301 moves within the third groove segment 423 and in a direction away from the second groove segment 422, guiding the hinge shaft 301 to move along the track groove 420 toward the end of the track groove 420 closer to the opening side, so as to drive the door 200 to move toward the opening side.

[0193] Of course, this is not a limitation. It is understood that in other embodiments, the specific structure of the trajectory groove 420 and the setting of its extension direction are only required to guide the hinge shaft 301 to move along a preset motion trajectory.

[0194] Referring to Figures 1-4 and 5-10, in some embodiments, the number of hinge axes 301 is set to two. The two hinge axes 301 are respectively set as a first hinge axis 310 and a second hinge axis 320. The first hinge axis 310 is located at the second end of the track groove 420 relative to the second hinge axis 320, and the second hinge axis 320 is located at the first end of the track groove 420 relative to the first hinge axis 310.

[0195] When the door 200 is in the closed state, the second hinge shaft 320 can be located at the first end of the track groove 420, and the first hinge shaft 310 and the second hinge shaft 320 are spaced apart. When the door 200 is in the open state, the first hinge shaft 310 can be located at the second end of the track groove 420.

[0196] During the process of the door 200 rotating and opening, when the first hinge shaft 310 and the second hinge shaft 320 are in the first groove 421 and moving towards the second groove 422, the hinge shaft 301 is guided to move along the track groove 420 towards the opening side, so as to drive the door 200 to move towards the opening side first.

[0197] From Figures 14 to 11, the first hinge shaft 310 and the second hinge shaft 320 move sequentially from the first slot 421 to the third slot 423. As shown in Figure 14, the second hinge shaft 320 is located at the first end of the first slot 421, within the first slot 421, and moves towards the second slot 422; at this time, the door 200 is in a closed state. As shown in Figure 13, the door 200 opens sequentially from the closed state, with the first hinge shaft 310 and the second hinge shaft 320 located within the first slot 421 and moving towards the second slot 422. As shown in Figure 12, the first hinge shaft 310 is located within the first slot 421, and the second hinge shaft 320 moves to the junction of the first slot 421 and the second slot 422, further increasing the opening angle of the door 200. As shown in Figure 11, the second hinge shaft 310 is located in the second groove segment 422, and the first hinge shaft 310 moves to the third groove segment 423 and is located at the second end of the track groove 420, so that the opening angle of the door 200 is the largest.

[0198] When the door 200 is rotated open to the point where the second hinge shaft 320 is located in the first groove segment 421 and the first hinge shaft 310 is located in the second groove segment 422, and continues to rotate open, the first hinge shaft 310 moves within the second groove segment 422 and toward the third groove segment 423, guiding the hinge shaft 301 to move along the track groove 420 toward the end of the track groove 420 closer to the pivot side, thereby driving the door 200 to move toward the pivot side.

[0199] When the door 200 rotates open to the point where the second hinge shaft 320 is located in the second groove segment 422 and the first hinge shaft 310 is located in the third groove segment 423, and continues to rotate open, the first hinge shaft 310 moves in the third groove segment 423 and away from the second groove segment 422, guiding the hinge shaft 301 to move along the track groove 420 towards the end of the track groove 420 closer to the opening side, so as to drive the door 200 to move towards the opening side.

[0200] It should be noted that the trajectory slot 420 can be provided with a first inflection point P and a second inflection point Q set at intervals. The first inflection point P can be set between the first slot segment 421 and the second slot segment 422, and the second inflection point Q can be set between the second slot segment 422 and the third slot segment 423.

[0201] In a plane perpendicular to the rear wall and side wall of the door, for example, in the top or bottom surface of the door body 200, a straight line parallel to the rear wall of the door can be used as the first reference line. The first reference line can be gradually moved from the rear wall of the door toward the front wall of the door. The position where the first reference line is tangent to the track groove 420 can be set as the first inflection point P of the track groove 420.

[0202] In a plane perpendicular to the back wall and side wall of the door, for example, in the top or bottom surface of the door body 200, a straight line parallel to the side wall of the door can be used as a second reference line. The second reference line can be moved from the side wall of the door towards the middle of the door body 200. The position where the second reference line is tangent to the track groove 420 can be set as the second inflection point Q of the track groove 420.

[0203] The curvature of the first groove segment 421 can be less than the curvature of the second groove segment 422, and the curvature of the second groove segment 422 can be greater than the curvature of the third groove segment 423. The first end of the track groove 420 is closer to the front wall of the door relative to the first inflection point P, and the first end of the first groove segment 421 is farther from the side wall of the door relative to the first inflection point P. The first inflection point P is closer to the rear wall of the door relative to the second inflection point Q, and the first inflection point P is farther from the side wall of the door relative to the second inflection point Q. The second inflection point Q is farther from the front wall of the door relative to the second end of the track groove 420, and the second inflection point Q is closer to the side wall of the door relative to the second end of the track groove 420.

[0204] In some embodiments, during the process of the door 200 rotating to open or rotate to close, the moving directions of the first hinge axis 310 and the second hinge axis 320 can be determined according to the trajectory groove 420 at the corresponding position.

[0205] For example, when the first hinge axis 310 and the second hinge axis 320 move within the track groove 420, the first hinge axis 310 and the second hinge axis 320 will contact the inner wall of the track groove 420. The tangential direction of the track groove 420 that contacts the first hinge axis 310 can be set as the moving direction of the first hinge axis 310, and the tangential direction of the track groove 420 that contacts the second hinge axis 320 can be set as the moving direction of the second hinge axis 320.

[0206] When the hinge shaft 301 moves within the first groove 421 and the second groove 422, the curvature of the first groove 421 is less than that of the second groove 422. The movement direction of the hinge shaft 301 within the first groove 421 changes less, while the movement direction of the first hinge shaft 310 within the second groove 422 changes more.

[0207] When the first hinge shaft 310 moves within the second groove 422 and the third groove 423, the curvature of the third groove 423 is less than that of the second groove 422, so the movement direction of the hinge shaft 301 within the third groove 423 changes less, while the movement direction of the first hinge shaft 310 within the second groove 422 changes more.

[0208] For example, when the first hinge axis 310 and the second hinge axis 320 move within the first segment 421 of the track groove 420, the direction of movement of the first hinge axis 310 is relatively close to the direction of movement of the second hinge axis 320. When the first hinge axis 310 moves within the first segment 421 of the track groove 420 and the second hinge axis 320 moves within the second segment 422 of the track groove 420, the angle between the direction of movement of the first hinge axis 310 and the direction of movement of the second hinge axis 320 is relatively large.

[0209] During the rotational closing process of the door 200, as shown in Figures 11 to 14, the first hinge shaft 310 and the second hinge shaft 320 can move within the track groove 420 from the second end of the track groove 420 toward the first end of the track groove 420. The abutment portion 410 can move from the first contact portion 330 to the first end of the inclined portion 340, then move obliquely downward from the first end of the inclined portion 340 to the second end of the inclined portion 340, and then move through the second end of the inclined portion 340 to the second contact portion 350, thereby realizing the closing process of the door 200.

[0210] In some embodiments, the opening angle φ of the door 200 may have a first preset angle, a second preset angle, and a third preset angle that decrease sequentially. Specifically, when the opening angle φ of the door 200 is set to the second preset angle, the abutting portion 410 abuts against the first end of the inclined portion 340. When the opening angle φ of the door 200 is set to the third preset angle, the abutting portion 410 abuts against the second end of the inclined portion 340.

[0211] During the process of the door 200 rotating and closing, the first hinge shaft 310 and the second hinge shaft 320 can move from the second end of the track groove 420 toward the first end of the track groove 420 within the track groove 420, and the first hinge shaft 310 and the second hinge shaft 320 can move from the third groove segment 423 toward the second groove segment 422 and the first groove segment 421.

[0212] When the opening angle φ of the door 200 is set to the first set angle, the abutment part 410 is located at the end of the first contact part 330 away from the inclined part 340. The first hinge shaft 310 may be located at the second end of the track groove 420, the second hinge shaft 320 may be located in the second groove segment 422, or the second hinge shaft 320 may be located in the first groove segment 421.

[0213] When the opening angle φ of the door 200 is set to the second preset angle, the abutment portion 410 is located at the first end of the inclined portion 340. As shown in Figure 15, the first hinge shaft 310 can be located within the first groove section 421, or the first hinge shaft 310 can be located within the second groove section 422. The second hinge shaft 320 can be located within the first groove section 421 to make the process of rotating and closing the door 200 more stable.

[0214] When the opening angle φ of the door 200 is set to the third preset angle, the abutment part 410 is located at the second end of the inclined part 340. As shown in FIG16, the first hinge shaft 310 and the second hinge shaft 320 can be located within the first groove section 421.

[0215] Alternatively, when the opening angle φ of the door 200 is set to the third preset angle, the abutment portion 410 is located at the second end of the inclined portion 340. The first hinge shaft 310 may be located within the first groove segment 421. The second hinge shaft 320 may be located at the second end of the track groove 420, with the first hinge shaft 310 and the second hinge shaft 320 spaced apart.

[0216] During the process of the door 200 rotating and closing, when the opening angle φ of the door 200 is greater than the third set angle and less than the second set angle, the abutment part 410 is located at the inclined part 340 and moves downward from the first end of the inclined part 340 to the second end of the inclined part 340. The door 200 moves downward under the action of the abutment part 410 and the inclined part 340.

[0217] The first hinge shaft 310 and the second hinge shaft 320 move within the first groove segment 421 of the track groove 420. The moving direction of the first hinge shaft 310 is close to that of the second hinge shaft 320, thereby making the horizontal movement of the door body 200 more stable under the drive of the first hinge shaft 310 and the second hinge shaft 320, and reducing the jerking sensation of the door body 200 during the rotation and closing process.

[0218] Referring to Figures 11-16, in some embodiments, the first groove segment 421 can be configured as a straight groove segment. When the first hinge shaft 310 and the second hinge shaft 320 move within the first groove segment 421 of the track groove 420, the moving direction of the first hinge shaft 310 is the same as the moving direction of the second hinge shaft 320.

[0219] During the rotational closing of the door 200, the abutment portion 410 is located on the inclined portion 340 and moves downwards from the first end of the inclined portion 340 to the second end of the inclined portion 340. During the rotational opening of the door 200, the abutment portion 410 is located on the inclined portion 340 and moves upwards from the second end of the inclined portion 340 to the first end of the inclined portion 340, making the descent of the door 200 more stable.

[0220] For example, when the opening angle φ of the door 200 is set to 130 degrees, the opening angle φ of the door 200 is set to a first set angle, and the abutment portion 410 is located at the end of the first contact portion 330 away from the inclined portion 340. When the opening angle φ of the door 200 is set to 30 degrees ≤ φ ≤ 130 degrees, the abutment portion 410 abuts against the first contact portion 330.

[0221] When the opening angle φ of the door 200 is 30 degrees, the opening angle φ of the door 200 is set to the second preset angle, the abutment part 410 abuts against the first end of the inclined part 340, the first hinge shaft 310 can be located at the first inflection point P, and the second hinge shaft 320 can be located within the first groove segment 421. Alternatively, the first hinge shaft 310 can be located within the first groove segment 421, and the second hinge shaft 320 can be located within the first groove segment 421. When the opening angle φ of the door 200 is 15 degrees, the opening angle φ of the door 200 is set to the third preset angle, and the abutment part 410 abuts against the second end of the inclined part 340; when the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 15 degrees, the abutment part 410 abuts against the second contact part 350.

[0222] When the opening angle φ of the door 200 is greater than the third set angle and less than the second set angle, the first hinge shaft 310 and the second hinge shaft 320 move within the first groove segment 421 of the track groove 420, thereby making the horizontal movement of the door 200 more stable under the drive of the first hinge shaft 310 and the second hinge shaft 320.

[0223] Phase 1

[0224] During the rotation and closing of the door 200, when the opening angle φ of the door 200 is set to 130 degrees, the opening angle φ of the door 200 is set to the first set angle, and the abutment part 410 is located at the end of the first contact part 330 away from the inclined part 340. When the opening angle of the door 200 is 30 degrees < φ ≤ 130 degrees, the abutment part 410 abuts against the first contact part 330, and the abutment part 410 moves from the end of the first contact part 330 away from the inclined part 340 toward the inclined part 340. When the opening angle φ of the door 200 is 30 degrees, the door 200 is at the second set angle, and the abutment part 410 can move to the first end of the inclined part 340.

[0225] The first hinge shaft 310 and the second hinge shaft 320 can move from the second end of the track groove 420 toward the first end of the track groove 420 within the track groove 420. The second hinge shaft 320 can move through the second groove segment 422 to the first groove segment 421. The first hinge shaft 310 can move from the third groove segment 423 through the second groove segment 422 to the first inflection point P or the first groove segment 421.

[0226] When the opening angle of the door 200 is 30 degrees < φ ≤ 130 degrees, the angle between the moving direction of the first hinge axis 310 and the moving direction of the second hinge axis 320 is relatively large, resulting in greater forces on both hinge axes 310 and 320. The abutting part 410 abuts against the first contact part 330, allowing the door 200 to move only in the horizontal direction without needing to move in the vertical direction, thus making the rotation process of the door 200 more stable.

[0227] Phase Two

[0228] When the opening angle φ of the door 200 is set to 15 degrees ≤ φ ≤ 30 degrees, the abutment part 410 abuts against the inclined part 340, and the door 200 can move the abutment part 410 downward under the action of gravity, so that the abutment part 410 moves from the first end of the inclined part 340 to the second end of the inclined part 340, and the movable member 400 drives the door 200 downward through the abutment part 410; when the opening angle φ of the door 200 is 15 degrees, the door 200 is at the third set angle, and the abutment part 410 moves to the second end of the inclined part 340;

[0229] The first hinge shaft 310 and the second hinge shaft 320 move within the first groove segment 421 of the track groove 420. The moving direction of the first hinge shaft 310 is close to that of the second hinge shaft 320, thereby making the horizontal movement of the door body 200 more stable under the drive of the first hinge shaft 310 and the second hinge shaft 320.

[0230] Phase Three

[0231] When the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 15 degrees, the abutting part 410 abuts against the second contact part 350, thereby driving the abutting part 410 to move towards the end of the second contact part 350 away from the inclined part 340; when the opening angle φ of the door 200 is ≤ 5 degrees, the abutting part 410 abuts against the second contact part 350, and the door seal located on the rear wall of the door 200 fits against the front end face of the box 100, thereby effectively sealing the connection between the door 200 and the box 100.

[0232] For example, the number of hinge pins 301 can be set to one. When the opening angle φ of the door body 200 is set to 130 degrees, the opening angle φ of the door body 200 is set to a first set angle, and the abutment portion 410 is located at the end of the first contact portion 330 away from the inclined portion 340. When the opening angle φ of the door body 200 is set to 30 degrees ≤ φ ≤ 130 degrees, the abutment portion 410 abuts against the first contact portion 330.

[0233] When the opening angle φ of the door 200 is 30 degrees, the opening angle φ of the door 200 is set to the second set angle, and the abutment part 410 abuts against the first end of the inclined part 340. The hinge shaft 301 can be located at the first inflection point P, or the hinge shaft 301 can be located within the first groove segment 421. When the opening angle φ of the door 200 is 15 degrees, the opening angle φ of the door 200 is set to the third set angle, and the abutment part 410 abuts against the second end of the inclined part 340; when the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 15 degrees, the abutment part 410 abuts against the second contact part 350.

[0234] When the opening angle φ of the door 200 is greater than the third set angle and less than the second set angle, the hinge shaft 301 moves within the first groove segment 421 of the track groove 420, thereby making the horizontal movement of the door 200 more stable under the drive of the hinge shaft 301.

[0235] Phase 1

[0236] During the rotation and closing of the door 200, when the opening angle φ of the door 200 is set to 130 degrees, the opening angle φ of the door 200 is set to the first set angle, and the abutment part 410 is located at the end of the first contact part 330 away from the inclined part 340. When the opening angle of the door 200 is 30 degrees < φ ≤ 130 degrees, the abutment part 410 abuts against the first contact part 330, and the abutment part 410 moves from the end of the first contact part 330 away from the inclined part 340 toward the inclined part 340. When the opening angle φ of the door 200 is 30 degrees, the door 200 is at the second set angle, and the abutment part 410 can move to the first end of the inclined part 340.

[0237] The hinge shaft 301 can move from the second end of the track groove 420 toward the first end of the track groove 420 within the track groove 420. The hinge shaft 301 can move through the second groove segment 422 to the first inflection point P or move into the first groove segment 421.

[0238] When the opening angle of the door 200 is 30 degrees < φ ≤ 130 degrees, the hinge shaft 301 is subjected to a large force. The abutment part 410 abuts against the first contact part 330, so that the door 200 only needs to move in the horizontal direction and does not need to move in the vertical direction, making the rotation process of the door 200 more stable.

[0239] Phase Two

[0240] When the opening angle φ of the door 200 is set to 15 degrees ≤ φ ≤ 30 degrees, the abutment part 410 abuts against the inclined part 340, and the door 200 can move the abutment part 410 downward under the action of gravity, so that the abutment part 410 moves from the first end of the inclined part 340 to the second end of the inclined part 340, and the movable member 400 drives the door 200 downward through the abutment part 410; when the opening angle φ of the door 200 is 15 degrees, the door 200 is at the third set angle, and the abutment part 410 moves to the second end of the inclined part 340;

[0241] The hinge shaft 301 moves within the first groove segment 421 of the track groove 420, thereby making the horizontal movement of the door body 200 more stable under the drive of the hinge shaft 301.

[0242] Phase Three

[0243] When the opening angle φ of the door 200 is set to 0 degrees ≤ φ < 15 degrees, the abutting part 410 abuts against the second contact part 350, thereby driving the abutting part 410 to move towards the end of the second contact part 350 away from the inclined part 340; when the opening angle φ of the door 200 is ≤ 5 degrees, the abutting part 410 abuts against the second contact part 350, and the door seal located on the rear wall of the door 200 fits against the front end face of the box 100, thereby effectively sealing the connection between the door 200 and the box 100.

[0244] In some embodiments, as shown in Figures 27 and 28, the refrigerator also has a cooperating locking hook 210 and a stop portion 110. The stop portion 110 is used to cooperate with the locking hook 210 to lock and unlock the door 200 and the cabinet 100. The locking hook 210 can be relatively fixed to one of the cabinet 100 and the door 200, and the stop portion 110 can be relatively fixed to the other of the cabinet 100 and the door 200.

[0245] For example, the hook 210 can be relatively fixed to the movable part 400. The hook 210 extends away from the door side wall and bends towards the door rear wall and close to the door side wall. The opening of the hook 210 faces the door side wall, and the free end of the hook 210 is closer to the door rear wall than its fixed end.

[0246] For example, the stop portion 110 can be relatively fixed to the fastener 300. A hook gap is formed on the side of the stop portion 110 near the cabinet 100. When the door 200 is in the closed state, the free end of the lock hook 210 is received in the hook gap, the stop portion 110 is located in the lock hook 210, and the lock hook 210 on the door 200 hooks the stop portion 110 on the hinge plate 360, thereby locking the door 200 and preventing the door 200 from not closing tightly, which would affect the refrigeration and freezing effect of the refrigerator.

[0247] When the door 200 is opened, the locking hook 210 deforms under force and overcomes the obstruction of the stop part 110, thereby disengaging from the stop part 110.

[0248] For example, the lock hook 210 includes a connecting portion 210a and a hook portion 210b. The hook portion 210b is connected to the connecting portion 210a and bends towards the side wall of the door, near the rear wall. A screw passes through the connecting portion 210a and is inserted into the door body 200 to fix the connecting portion 210a to the door body 200, thereby strengthening the connection between the connecting portion 210a and the door body 200, so that when the lock hook 210 is disengaged from the stop portion 110, only the hook portion deforms.

[0249] The free ends of the hook portion 210a and / or the stop portion 110 are both arc-shaped, which facilitates the hook portion to smoothly hook onto or disengage from the stop portion 110.

[0250] During the closing process of the door 200, the free end of the hook 210a gradually approaches the stop 110. When the hook 210a comes into contact with the stop 110, the hook 210a deforms under the action of the reaction force of the stop 110, causing the stop 110 to enter the hook and the free end of the hook 110 to enter the hook gap, thereby locking the lock hook 210 with the hinge plate 360 ​​and locking the door 200 with the box 100.

[0251] It is understandable that during the opening of the door 200, the function between the hook part 210a and the stop part 110 is the opposite of that during the closing of the door 200, which will not be elaborated here.

[0252] For example, when the opening angle of the door 200 is less than or equal to the second preset angle, the door 200 can automatically close under the action of the hook part 210a and the stop part 110. Alternatively, when the opening angle of the door 200 is less than or equal to 30 degrees, the door 200 can automatically close under the action of the hook part 210a and the stop part 110.

[0253] Understandably, in the second or third stage of the door 200 rotation closing process, the door 200 gradually approaches the housing 100 so that the locking hook 210 and the stop part 100 can engage with each other, that is, the locking hook 210 on the door 200 hooks the stop part 110 to lock the door 200.

[0254] In some embodiments, in the hinge assembly located at the lower end of the door body 200, the first hinge shaft 310 and the second hinge shaft 320 may be disposed on the surface of the fixed member 300 facing the movable member 400, and both the first hinge shaft 310 and the second hinge shaft 320 may extend upward in the vertical direction.

[0255] At least one of the first hinge shaft 310 and the second hinge shaft 320 may be disposed between the first contact portion 330 and the inclined portion 340, and the track groove 420 may be correspondingly disposed on the surface of the movable member 400 facing the fixed member 300.

[0256] It should be noted that, in the extending direction of the first hinge shaft 310 and the second hinge shaft 320, when the first hinge shaft 310 is disposed between the first contact portion 330 and the inclined portion 340, the orthographic projection portion of the first hinge shaft 310 is located at the first contact portion 330, and the remaining orthographic projection portion of the first hinge shaft 310 is located at the inclined portion 340.

[0257] When the second hinge shaft 320 is disposed between the first contact portion 330 and the inclined portion 340, the orthographic projection portion of the second hinge shaft 320 is located at the first contact portion 330, and the remaining orthographic projection portion of the second hinge shaft 320 is located at the inclined portion 340.

[0258] In some embodiments, the first hinge shaft 310 may be disposed at the first contact portion 330, and the second hinge shaft 320 may be disposed at the second contact portion 350.

[0259] The inclined portion 340 can be elongated, with its length direction parallel to the horizontal direction and its width direction parallel to the inclined direction. The first end and the second end of the inclined portion 340 are spaced apart along the width direction of the inclined portion 340, thereby increasing the contact area between the inclined portion 340 and the abutment portion 410, making the movement of the door 200 more stable.

[0260] In the horizontal direction, the arrangement of the first hinge shaft 310 and the second hinge shaft 320 can be approximately perpendicular to the length direction of the inclined portion 340.

[0261] During the opening and closing of the door 200, as the first hinge shaft 310 and the second hinge shaft 320 move within the first groove 421, the direction of movement of the first hinge shaft 310 is quite close to that of the second hinge shaft 320. The direction of movement of the first hinge shaft 310 and the second hinge shaft 320 can be approximately equal to their arrangement direction, and the direction of movement of the first hinge shaft 310 and the second hinge shaft 320 can be approximately equal to the width direction of the inclined portion 340, making the opening and closing process of the door 200 more stable.

[0262] For example, between the first contact portion 330 and the inclined portion 340, the plane where the first contact portion 330 is located can be used as a reference plane. The portion located on the reference plane is the first contact portion 330, and the portion with a height lower than the reference plane is the inclined portion 340. The inclined portion 340 coincides with the reference plane to form a positioning line.

[0263] For example, when the first hinge axis 310 is disposed between the first contact portion 330 and the inclined portion 340, the positioning line may pass through the first hinge axis 310, or the positioning line may be tangential to or coincident with the edge of the first hinge axis 310. When the second hinge axis 320 is disposed between the first contact portion 330 and the inclined portion 340, the positioning line passes through the second hinge axis 320, or the positioning line may be tangential to or coincident with the edge of the second hinge axis 320.

[0264] During the rotation of the door 200 to open or close, in the horizontal direction, the first hinge shaft 310 and the second hinge shaft 320 move relative to the track groove 420 along the extension direction of the track groove 420. In the vertical direction, when the movable member 400 drives the door 200 to move vertically through the abutment part 410, the fixed member 300 is relatively fixed to the door 200, so that the first hinge shaft 310 and the second hinge shaft 320 move relative to the track groove 420 in the vertical direction.

[0265] For example, when the movable member 400 moves the door body 200 upward via the abutment part 410, a portion of the first hinge shaft 310 extends out of the track groove 420, increasing the distance between the first hinge shaft 310 and the bottom surface of the track groove 420. A portion of the second hinge shaft 320 also extends out of the track groove 420, increasing the distance between the second hinge shaft 320 and the bottom surface of the track groove 420.

[0266] In some embodiments, the length of the first hinge shaft 310 extending out of the fixing member 300 may be equal to the length of the second hinge shaft 320 extending out of the fixing member 300.

[0267] The lengths of the first hinge shaft 310 extending beyond the fixing member 300 and the second hinge shaft 320 extending beyond the fixing member 300 can be set to be greater than or equal to 6 mm and less than or equal to 15 mm. For example, the lengths of the first hinge shaft 310 extending beyond the fixing member 300 and the second hinge shaft 320 extending beyond the fixing member 300 can be set within any length range of 6 mm-8 mm, 8 mm-10 mm, 10 mm-12 mm, and 12 mm-15 mm to ensure the stability of the first hinge shaft 310 and the second hinge shaft 320 during movement.

[0268] The length of the first hinge shaft 310 extending out of the track groove 420 and the length of the second hinge shaft 320 extending out of the track groove 420 are equal to the height difference between the first contact portion 330 and the second contact portion 350 in the vertical direction. The greater the length of the first hinge shaft 310 within the track groove 420, the better the stability of the first hinge shaft 310. The greater the length of the second hinge shaft 320 within the track groove 420, the better the stability of the second hinge shaft 320.

[0269] The smaller the length of the first hinge shaft 310 extending out of the fixing member 300 and the shorter the length of the second hinge shaft 320 extending out of the fixing member 300, the smaller the torque on the first hinge shaft 310 and the second hinge shaft 320, and the better the stability of the first hinge shaft 310 and the second hinge shaft 320.

[0270] For example, when the height difference between the first contact portion 330 and the second contact portion 350 in the vertical direction remains unchanged, the stability of the first hinge shaft 310 in the track groove 420 can be improved by increasing the length of the first hinge shaft 310 and the depth of the track groove 420, and the stability of the second hinge shaft 320 in the track groove 420 can be improved by increasing the length of the second hinge shaft 320 and the depth of the track groove 420, so as to reduce the possibility of the moving member 400 disengaging from the fixed member 300.

[0271] For example, when the abutting portion 410 abuts against the second end of the inclined portion 340 or the second contact portion 350, the length of the first hinge shaft 310 located in the track groove 420 is set as the first length of the first hinge shaft 310, and the length of the second hinge shaft 320 located in the track groove 420 is set as the first length of the second hinge shaft 320; when the abutting portion 410 abuts against the first end of the inclined portion 340 or the first contact portion 330, the length of the first hinge shaft 310 located in the track groove 420 is set as the second length of the first hinge shaft 310, and the length of the second hinge shaft 320 located in the track groove 420 is set as the second length of the second hinge shaft 320.

[0272] When the abutting part 410 abuts against the second end of the inclined part 340 or the second contact part 350, the end of the first hinge shaft 310 away from the fixing member 300 can abut against the bottom surface of the track groove 420, and the first length of the first hinge shaft 310 is equal to 5 mm. The end of the second hinge shaft 320 away from the fixing member 300 can abut against the bottom surface of the track groove 420, and the first length of the second hinge shaft 320 is equal to 7 mm. When the abutting part 410 moves to the first end of the inclined part 340 or the first contact part 330, the length of the first hinge shaft 310 extending out of the track groove 420 is equal to 2 mm, the second length of the first hinge shaft 310 is equal to 3 mm, the length of the second hinge shaft 320 extending out of the track groove 420 is equal to 2 mm, and the second length of the second hinge shaft 320 is equal to 5 mm.

[0273] Alternatively, the length of the first hinge axis 310 can be equal to the length of the second hinge axis 320. When the height difference in the vertical direction between the first contact portion 330 and the second contact portion 350 is set to 2 mm, the lengths of the first hinge axis 310 and the second hinge axis 320 can be set to be greater than or equal to 10 mm and less than or equal to 12 mm. For example, the lengths of the first hinge axis 310 and the second hinge axis 320 can be set to 11 mm. The depth of the track groove 420 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 track groove 420 can be set within the range of 6 mm-7 mm or 7 mm-8 mm.

[0274] When the abutting part 410 abuts against the second end of the inclined part 340 or the second contact part 350, the end of the first hinge shaft 310 away from the fixing member 300 can abut against the bottom surface of the track groove 420, and the first length of the first hinge shaft 310 is equal to 7 mm.

[0275] The end of the second hinge shaft 320 facing away from the fixing member 300 can abut against the bottom surface of the track groove 420. The first length of the second hinge shaft 320 is equal to 7 mm. When the abutting part 410 moves to the first end of the inclined part 340 or the first contact part 330, the length of the first hinge shaft 310 extending from the track groove 420 is equal to 2 mm, and the second length of the first hinge shaft 310 is equal to 5 mm. The length of the second hinge shaft 320 extending from the track groove 420 is equal to 2 mm, and the second length of the second hinge shaft 320 is equal to 5 mm.

[0276] For example, the angle between the line connecting the first hinge axis 310 and the second hinge axis 320 and the line connecting the first end and the second end of the inclined portion 340 can be set to be greater than or equal to 0 degrees and less than or equal to 15 degrees.

[0277] For example, the angle between the line connecting the first hinge shaft 310 and the second hinge shaft 320 and the line connecting the first end and the second end of the inclined portion 340 can be set in any of the following ranges: 0 degrees-5 degrees, 5 degrees-10 degrees, and 10 degrees-15 degrees, to ensure the stability of the abutment portion 410 during its movement along the inclined portion 340.

[0278] That is, the angle between the line connecting the first hinge shaft 310 and the second hinge shaft 320 and the extension direction of the inclined portion 340 can be set to be greater than or equal to 75 degrees and less than or equal to 105 degrees. The extension direction of the inclined portion 340 can be set perpendicular to the movement direction of the abutment portion 410 on the surface of the inclined portion 340. For example, the angle between the line connecting the first hinge shaft 310 and the second hinge shaft 320 and the extension direction of the inclined portion 340 can be set within any angle range of 75-80 degrees, 80-85 degrees, 85-90 degrees, 90-95 degrees, 95-100 degrees, and 100-105 degrees to ensure the stability of the abutment portion 410 during the movement along the inclined portion 340.

[0279] The distance between the first hinge axis 310 and the front edge of the door body 200 can be equal to the distance between the second hinge axis 320 and the front edge of the door body 200.

[0280] During the rotational opening or closing of the door 200, the first hinge axis 310 and the second hinge axis 320 move within the track groove 420. When the abutment portion 410 faces the inclined portion 340, the door 200 undergoes vertical displacement, and the abutment portion 410 abuts against the inclined portion 340, causing the door 200 to rotate around the front edge of the door 200. During the process of the abutment portion 410 moving downwards from the first end of the inclined portion 340 to the second end of the inclined portion 340, the direction of movement of the abutment portion 410 is relatively parallel to the line connecting the first hinge axis 310 and the second hinge axis 320.

[0281] It should be noted that "relatively parallel" can be understood as the angle formed by the moving direction of the abutment part 410 on the surface of the inclined part 340 and the line connecting the first hinge axis 310 and the second hinge axis 320 being small. For example, the angle formed by the moving direction of the abutment part 410 on the surface of the inclined part 340 and the line connecting the first hinge axis 310 and the second hinge axis 320 can be set to be greater than or equal to 0 degrees and less than or equal to 15 degrees, so as to make the moving process of the abutment part 410 more stable. The diameters of the first hinge shaft 310 and the second hinge shaft 320 can be the same, or they can be different. For example, one of the first hinge shaft 310 and the second hinge shaft 320 can serve as the main shaft of the gravity self-closing structure, and the other can serve as the secondary shaft of the gravity self-closing structure. In this case, the force on the main shaft of the gravity self-closing structure is greater than the force on the secondary shaft, so the diameter of the main shaft of the gravity self-closing structure is greater than the diameter of the secondary shaft to ensure the stability of the gravity self-closing structure and reduce the possibility of deformation of the main shaft.

[0282] The diameters of the first hinge shaft 310 and the second hinge shaft 320 can be set to be greater than or equal to 7 mm and less than or equal to 9 mm. For example, the diameters of the first hinge shaft 310 and the second hinge shaft 320 can be set within the range of 7 mm-8 mm or 8 mm-9 mm.

[0283] Alternatively, the diameters of the first hinge shaft 310 and the second hinge shaft 320 can be set within the range of 6.6 mm to 6.9 mm, or 7.3 mm to 7.9 mm, 8.1 mm to 8.9 mm, 9.1 mm to 9.9 mm, and 10.1 mm to 10.9 mm.

[0284] The materials of the first hinge shaft 310 and the second hinge shaft 320 can both be cold-forged steel. The yield strength of the first hinge shaft 310 and the second hinge shaft 320 is greater than or equal to 260 MPa and less than or equal to 400 MPa, so as to ensure the strength of the first hinge shaft 310 and the second hinge shaft 320 and reduce the possibility of the first hinge shaft 310 and the second hinge shaft 320 breaking.

[0285] The diameters of the first hinge shaft 310 and the second hinge shaft 320 can be adjusted according to the thickness of the door body 200. When the thickness of the door body 200 is greater, the diameters of the first hinge shaft 310 and the second hinge shaft 320 can be larger, and the assembly space of the first hinge shaft 310 and the second hinge shaft 320 is larger.

[0286] For example, the ratio of the diameter of the first hinge shaft 310 and the second hinge shaft 320 to the thickness of the door body 200 can be set to be greater than or equal to one-tenth and less than or equal to one-sixth, to ensure sufficient assembly space for the first hinge shaft 310 and the second hinge shaft 320 and to reduce the possibility of breakage of the first hinge shaft 310 and the second hinge shaft 320. For example, the thickness of the door body 200 can be set to 60 mm, and the diameter of the first hinge shaft 310 and the second hinge shaft 320 can be set to 8 mm.

[0287] The larger the ratio of the diameter of the first hinge shaft 310 and the second hinge shaft 320 to the thickness of the door body 200, the lower the possibility of the first hinge shaft 310 and the second hinge shaft 320 breaking, and the more stable the door body 200 is in rotating open or closed. The smaller the ratio of the diameter of the first hinge shaft 310 and the second hinge shaft 320 to the thickness of the door body 200, the larger the assembly space of the first hinge shaft 310 and the second hinge shaft 320, and the more flexible the arrangement of the track groove 420.

[0288] In the vertical direction, the first hinge shaft 310 moves up and down relative to the track groove 420, and the second hinge shaft 320 moves up and down relative to the track groove 420, so that the first hinge shaft 310 and the second hinge shaft 320 need to bear forces from both the horizontal and vertical directions simultaneously. By setting the diameter of the first hinge shaft 310 and the second hinge shaft 320 to be greater than or equal to 7 mm, and the yield strength of the first hinge shaft 310 and the second hinge shaft 320 to be greater than or equal to 260 MPa, the possibility of deformation of the first hinge shaft 310 and the second hinge shaft 320 due to force is reduced, thereby improving the stability of the first hinge shaft 310 and the second hinge shaft 320.

[0289] The angle between the line connecting the first hinge axis 310 and the second hinge axis 320 and the line connecting the first end and the second end of the inclined portion 340 can be set to be greater than or equal to 0 degrees and less than or equal to 15 degrees.

[0290] That is, the angle between the line connecting the first hinge axis 310 and the second hinge axis 320 and the extending direction of the inclined portion 340 can be set to be greater than or equal to 75 degrees and less than or equal to 105 degrees. For example, in the horizontal plane, the angle between the line connecting the first hinge axis 310 and the second hinge axis 320 and the extending direction of the door body 200 is greater than or equal to 15 degrees and less than or equal to 45 degrees.

[0291] When the distance between the first hinge axis 310 and the second hinge axis 320 is constant, the larger the angle between the line connecting the first hinge axis 310 and the second hinge axis 320 and the line connecting the first end and the second end of the inclined portion 340, the larger the layout space required for the gravity self-closing structure and the larger the required thickness of the door body 200.

[0292] It should be noted that the distance between the first hinge shaft 310 and the second hinge shaft 320 can be greater than or equal to 16 mm and less than or equal to 20 mm. For example, the distance between the first hinge shaft 310 and the second hinge shaft 320 can be set within any of the following ranges: 16 mm-17 mm, 17 mm-18 mm, 18 mm-19 mm, and 19 mm-20 mm. This makes the arrangement of the track grooves 420 more compact, thereby increasing the diameter of the first hinge shaft 310 and the second hinge shaft 320 and improving the stability of the first hinge shaft 310 and the second hinge shaft 320.

[0293] The weight of the door body 200 can be set to be greater than or equal to 10 kg, thereby improving the self-closing effect of the gravity self-closing structure that utilizes the gravity of the door body 200. Furthermore, when the weight of the door body 200 is greater than or equal to 10 kg, by setting the diameter of the first hinge shaft 310 and the second hinge shaft 320 to be greater than or equal to 7 mm, and the yield strength of the first hinge shaft 310 and the second hinge shaft 320 to be greater than or equal to 260 MPa, the possibility of deformation of the first hinge shaft 310 and the second hinge shaft 320 due to force can be reduced.

[0294] When the thickness of the door body 200 is greater, the layout space of the gravity self-closing structure is larger, the distance between the first hinge axis 310 and the second hinge axis 320 increases, and the diameter of the first hinge axis 310 and the second hinge axis 320 can also be increased. By setting the ratio of the diameter of the first hinge axis 310 and the second hinge axis 320 to the thickness of the door body 200 to be greater than or equal to one-tenth and less than or equal to one-sixth, the layout space of the gravity self-closing structure is guaranteed, and the first hinge axis 310 and the second hinge axis 320 in the gravity self-closing structure can obtain a larger diameter to improve the strength of the first hinge axis 310 and the second hinge axis 320.

[0295] Referring to Figures 5-10, the abutment portion 410 contacts the first contact portion 330, the inclined portion 340, and the second contact portion 350 at different positions. When the abutment portion 410 faces the inclined portion 340, the abutment portion 410 abuts against the inclined portion 340, and the door body 200 is displaced in the vertical direction. In the direction of movement of the abutment portion 410, the first hinge shaft 310 contacts the portion of the movable member 400 located behind the abutment portion 410, and the second hinge shaft 320 contacts the portion of the movable member 400 located in front of the abutment portion 410.

[0296] When the door 200 moves vertically, the first hinge shaft 310 and the second hinge shaft 320 can contact the movable parts 400 on the front and rear sides of the abutment part 410. This allows the first hinge shaft 310 and the second hinge shaft 320 to support the front and rear sides of the abutment part 410, making the relative movement between the movable part 400 and the fixed part 300 more stable and reducing the possibility of wobbling or large gaps between the movable part 400 and the fixed part 300.

[0297] In some possible implementations, the first hinge shaft 310 may be located on the side of the second end of the inclined portion 340 away from the first end of the inclined portion 340. The second hinge shaft 320 is located on the side of the first end of the inclined portion 340 away from the second end of the inclined portion 340, so that the first hinge shaft 310 and the second hinge shaft 320 provided on the front and rear sides of the inclined portion 340 can provide a certain support for the front and rear sides of the inclined portion 340.

[0298] For example, the angle between the line connecting the first hinge axis 310 and the second hinge axis 320 and the extension direction of the door body 200 can be greater than or equal to 15 degrees and less than or equal to 45 degrees.

[0299] For example, the angle between the line connecting the first hinge axis 310 and the second hinge axis 320 and the extension direction of the door body 200 can be set within at least one of the following angle ranges: 15-20 degrees, 20-25 degrees, 25-30 degrees, 30-35 degrees, 35-40 degrees, and 40-45 degrees.

[0300] During the process of the door 200 rotating open from the closed state, the horizontal movement direction of the door 200 is approximately equal to the extension direction of the first groove segment 421, and the extension direction of the first groove segment 421 is approximately equal to the line direction connecting the first hinge shaft 310 and the second hinge shaft 320. That is, the horizontal movement direction of the door 200 is approximately equal to the line direction connecting the first hinge shaft 310 and the second hinge shaft 320.

[0301] By allowing the angle between the line connecting the first hinge axis 310 and the second hinge axis 320 and the extension direction of the door body 200 to be greater than or equal to 15 degrees and less than or equal to 45 degrees, the door body 200 can simultaneously have a tendency to move away from the housing 100 and toward the inside of the housing 100, thereby realizing the embedded design of the door body 200.

[0302] The inclined portion 340 is configured as a square inclined portion 340, and the extending direction of the square inclined portion 340 is perpendicular to the line connecting the first end and the second end of the inclined portion 340.

[0303] The angle between the extending direction of the square inclined portion 340 and the line connecting the first hinge axis 310 and the second hinge axis 320 is greater than or equal to 75 degrees and less than or equal to 105 degrees. For example, the angle between the extending direction of the square inclined portion 340 and the line connecting the first hinge axis 310 and the second hinge axis 320 can be set within the range of 75-85 degrees, 85-95 degrees, and 95-105 degrees.

[0304] By setting the inclined portion 340 as a square inclined portion 340, the contact area between the inclined portion 340 and the abutment portion 410 can be increased. The angle between the extension direction of the square inclined portion 340 and the line connecting the first hinge axis 310 and the second hinge axis 320 is greater than or equal to 75 degrees and less than or equal to 105 degrees. When the abutment portion 410 abuts against the inclined portion 340, the movement direction of the abutment portion 410 is approximately parallel to the line connecting the first hinge axis 310 and the second hinge axis 320. The square inclined portion 340 can provide a certain support for both sides of the movement direction of the abutment portion 410, making the movement process of the abutment portion 410 more stable.

[0305] Furthermore, since the first hinge shaft 310 and the second hinge shaft 320 can provide certain support to the front and rear sides of the abutment part 410 in the direction of movement, the contact area between the movable part 400 and the fixed part 300 can be further increased through the first hinge shaft 310, the second hinge shaft 320 and the square inclined part 340, thereby further improving the stability of the mutual cooperation process between the fixed part 300 and the movable part 400.

[0306] In some embodiments, in the hinge assembly located at the upper end of the door body 200, the first hinge shaft 310 and the second hinge shaft 320 may be disposed on the hinge plate 360, the first hinge shaft 310 and the second hinge shaft 320 extend downward in the vertical direction, and the door body 200 is correspondingly provided with a track groove 420.

[0307] When the movable part 400 drives the door body 200 to move upward through the abutment part 410, part of the first hinge shaft 310 extends into the track groove 420, and the distance between the first hinge shaft 310 and the bottom surface of the track groove 420 decreases; part of the second hinge shaft 320 extends into the track groove 420, and the distance between the second hinge shaft 320 and the bottom surface of the track groove 420 decreases.

[0308] For example, when the abutting part 410 abuts against the first contact part 330 or the second contact part 350, there is a first gap between the first hinge shaft 310 and the bottom surface of the track groove 420, and there is a second gap between the second hinge shaft 320 and the bottom surface of the track groove 420. The first gap and the second gap can be determined according to the height difference between the first contact part 330 and the second contact part 350 in the vertical direction. The first gap and the second gap are greater than or equal to the height difference between the first contact part 330 and the second contact part 350 in the vertical direction.

[0309] For example, the size of the first interval and the second interval can be set to be greater than or equal to 3 mm and less than or equal to 5 mm. The size of the first interval and the second interval can be set within any interval range of 3 mm-3.5 mm, 3.5 mm-4 mm, 4 mm-4.5 mm, and 4.5 mm-5 mm, so as to reduce the possibility of collision between the first hinge shaft 310 and the bottom surface of the track groove 420, and between the second hinge shaft 320 and the bottom surface of the track groove 420 by setting a certain margin in the first interval and the second interval.

[0310] An end cap may be provided at the upper end of the door body 200, and the end cap may be fixedly installed on the door body 200. In the thickness direction of the door body 200, the width of the end cap is equal to the thickness of the door body 200. The end cap may be provided with a bushing, and the bushing may be embedded in the end cap, with the top surface of the bushing recessed relative to the top surface of the end cap.

[0311] As shown in Figure 27, the height difference between the top surface of the end cap 31 and the top surface of the bushing 32 can be greater than or equal to 0.5 mm and less than or equal to 1.5 mm. For example, the height difference between the top surface of the end cap 31 and the top surface of the bushing 32 can be set to any of the following height difference ranges: 0.5 mm-0.8 mm, 0.8 mm-1 mm, 1 mm-1.2 mm, and 1.2 mm-1.5 mm.

[0312] In the vertical direction, the height of the top surface of the bushing 31 is lower than the height of the top surface of the housing 100. The height difference between the top surface of the housing 100 and the top surface of the bushing 32 is greater than or equal to 4 mm and less than or equal to 7 mm. For example, the height difference between the top surface of the housing 100 and the top surface of the bushing 32 can be set within any of the following ranges: 4 mm-5 mm, 5 mm-6 mm, and 6 mm-7 mm, so that the door 200 can drive the bushing 32 to move up and down in the vertical direction.

[0313] The bushing 32 is provided with a track groove 420 and is correspondingly disposed on the hinge plate 360 ​​so that the first hinge shaft 310 located on the hinge plate 360 ​​can move relative to the track groove 420 of the bushing 32, and the second hinge shaft 320 located on the hinge plate 360 ​​can move relative to the track groove 420 of the bushing.

[0314] During the process of rotating to open or close the door 200, the hinge assembly located at the upper end of the door 200 allows the first hinge shaft 310 to move relative to the track groove 420 along its horizontal extension direction in the horizontal direction, and the second hinge shaft 320 to move relative to the track groove 420 along its horizontal extension direction. In the vertical direction, the first hinge shaft 310 moves up and down relative to the track groove 420, and the second hinge shaft 320 moves up and down relative to the track groove 420.

[0315] It should be noted that the first hinge shaft 310 and the second hinge shaft 320 located at the upper end of the door body 200 are respectively set in the first hinge shaft 310 and the second hinge shaft 320 in the gravity self-closing structure. The first hinge shaft 310 located at the upper end of the door body 200 is coaxially set with the first hinge shaft 310 in the gravity self-closing structure, and the second hinge shaft 320 located at the upper end of the door body 200 is coaxially set with the second hinge shaft 320 in the gravity self-closing structure, so as to make the rotation process of the door body 200 more stable.

[0316] Furthermore, the diameter of the first hinge shaft 310 located at the upper end of the door body 200 can be less than or equal to the diameter of the first hinge shaft 310 in the gravity self-closing structure, and the diameter of the second hinge shaft 320 located at the upper end of the door body 200 can be less than or equal to the diameter of the second hinge shaft 320 in the gravity self-closing structure. For example, the thickness of the door body 200 can be set to 60 mm, the diameter of the first hinge shaft 310 and the diameter of the second hinge shaft 320 in the gravity self-closing structure can be set to 8 mm, and the diameters of the first hinge shaft 310 and the second hinge shaft 320 located at the upper end of the door body 200 can both be set to 6 mm or 7 mm.

[0317] Furthermore, the hinge assembly located at the upper end of the door body 200, the hinge plate 360 ​​may be provided with a shim 33, the shim 33 is used to fix the first hinge shaft 310 and the second hinge shaft 320, so as to make the installation of the first hinge shaft 310 and the second hinge shaft 320 more stable.

[0318] The shim 33 can be sleeved on the outside of the first hinge shaft 310 and the second hinge shaft 320. The number of shims 33 can be set to one or two. For example, the first hinge shaft 310 and the second hinge shaft 320 can be fixed by two shims 33 respectively, or the first hinge shaft 310 and the second hinge shaft 320 can be fixed by one shim 33 at the same time.

[0319] The thickness of the gasket 33 can be set to be greater than or equal to 0.6 mm and less than or equal to 1.5 mm. For example, the thickness of the gasket 33 can be set within any of the following thickness ranges: 0.6 mm-0.8 mm, 0.8 mm-1 mm, 1 mm-1.2 mm, and 1.2 mm-1.5 mm.

[0320] The greater the thickness of the shim 33, the more stable the connection between the first hinge shaft 310 and the second hinge shaft 320 and the hinge plate 360. The smaller the thickness of the shim 33, the greater the length of the first hinge shaft 310 extending out of the shim 33, and the greater the length of the second hinge shaft 320 extending out of the shim 33. When the depth of the bushing 32 remains unchanged, the smaller the thickness of the shim 33, the smaller the total length of the first hinge shaft 310 and the second hinge shaft 320, and the more compact the hinge assembly structure at the upper end of the door body 200, thus reducing the assembly space required for the hinge assembly at the upper end of the door body 200.

[0321] In some embodiments, as shown in FIG4, the fixing member 300 includes a first contact portion 330, an inclined portion 340, and a second contact portion 350 connected to each other. The fixing member 300 contacts the movable member 400 through the first contact portion 330, the inclined portion 340, and the second contact portion 350. The first surface of the fixing member 300 faces the movable member 400, and the second surface of the fixing member 300 faces away from the movable member 400. The surfaces of the first contact portion 330, the inclined portion 340, and the second contact portion 350 facing the movable member 400 together form the first surface of the fixing member 300, so as to increase the contact area between the movable member 400 and the fixing member 300 and improve the stability of the contact between the movable member 400 and the fixing member 300.

[0322] The first contact portion 330 and the second contact portion 350 can both be arranged in parallel in the horizontal direction. The height difference between the first contact portion 330 and the second contact portion 350 in the vertical direction can be set to be greater than or equal to 1 mm and less than or equal to 5 mm.

[0323] For example, the height difference between the first contact portion 330 and the second contact portion 350 in the vertical direction can be set within any of the following ranges: 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, in order to reduce the user's sense of jerkiness during the door closing process.

[0324] Alternatively, in some embodiments, at least one of the first contact portion 330 and the second contact portion 350 may be inclined, and the inclination direction of the first contact portion 330 and the second contact portion 350 may be the same as or different from the inclination direction of the inclined portion 340. The inclination angle of the first inclined portion 340 and the inclination angle of the second contact portion 350 may be less than or greater than the inclination angle of the inclined portion 340, so as to further improve the closing effect of the gravity self-closing structure.

[0325] The height difference in the vertical direction between the first end and the second end of the inclined portion 340 can be set to be greater than or equal to 1 mm and less than or equal to 5 mm. For example, the height difference in the vertical direction between the first end and the second end of the inclined portion 340 can be set within any of the following ranges: 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, in order to reduce the user's sense of jerkiness during the closing process.

[0326] The height difference in the vertical direction between the first contact portion 330 and the second contact portion 350, and the height difference in the vertical direction between the first end of the inclined portion 340 and the second end of the inclined portion 340, can all be equal to the vertical distance that the door 200 moves during the rotational opening or closing process.

[0327] The smaller the height difference in the vertical direction between the first contact portion 330 and the second contact portion 350, and the smaller the height difference in the vertical direction between the first end of the inclined portion 340 and the second end of the inclined portion 340, the smaller the vertical movement distance of the door 200 during the rotation opening or rotation closing process.

[0328] Furthermore, the smaller the vertical movement distance of the door 200 during the rotation opening or closing process, the less jerky the user will feel during the opening and closing process. The larger the vertical movement distance of the door 200 during the rotation opening or closing process, the better the gravity self-closing effect of the door 200, and the greater the force required for the user to open the door.

[0329] The smaller the tilt angle of the tilting part 340, the less jerky the user feels during the closing process. The tilt angle of the tilting part 340 can be set to less than or equal to 40 degrees. For example, the tilt angle of the tilting part 340 can be set to any of the following tilt angle ranges: 10-15 degrees, 15-20 degrees, 20-25 degrees, 25-30 degrees, 30-35 degrees, and 35-40 degrees, in order to reduce the jerky feeling of the user during the closing process.

[0330] The tilt angle of the inclined portion 340 can be determined based on the vertical height difference between the first end and the second end of the inclined portion 340 in the vertical direction, and the horizontal distance between the first end and the second end of the inclined portion 340 in the horizontal direction. That is, when the vertical height difference between the first end and the second end of the inclined portion 340 is constant, the greater the horizontal distance between the first end and the second end of the inclined portion 340, the smaller the tilt angle of the inclined portion 340; when the horizontal distance between the first end and the second end of the inclined portion 340 is constant, the greater the vertical height difference between the first end and the second end of the inclined portion 340, the greater the tilt angle of the inclined portion 340.

[0331] It should be noted that the first end of the inclined portion 340 can be determined by a reference plane of the plane where the first contact portion 330 is located. For example, between the first contact portion 330 and the inclined portion 340, the plane where the first contact portion 330 is located can be used as a reference plane. The part located on the reference plane is the first contact portion 330, and the part with a height lower than the reference plane is the inclined portion 340. The inclined portion 340 coincides with the reference plane to form a positioning line. That is, the first end of the inclined portion 340 forms the above-mentioned positioning line, and the position of the positioning line can be used to refer to the first end of the inclined portion 340.

[0332] The second end of the inclined portion 340 can be configured such that when the door 200 is in the closed state, the horizontal plane at the bottom of the abutment portion 410 of the door 200 is set as the reference plane, and the intersection of the reference plane and the inclined portion 340 is the second end of the inclined portion 340; and the bottom end of the inclined portion 340 can be used to connect the second contact portion 350.

[0333] When the length of the inclined portion 340 is relatively long, that is, when the door 200 is in the closed state, the first part of the inclined portion 340 can be located above the reference surface, and the first part of the inclined portion 340 is used to contact the abutment portion 410; the second part of the inclined portion 340 can be located below the reference surface, and the second part of the inclined portion 340 can be used to connect the hinge plate 360 ​​and other structures. In this case, both the first end and the second end of the inclined portion 340 are the first part of the inclined portion 340, and the second part of the inclined portion 340 will not be used to contact the abutment portion 410, so that the second end of the inclined portion 340 can be connected to the second contact portion 350 through the second part of the inclined portion 340.

[0334] In some possible implementations, when the door 200 is in the closed state, the length of the movable member 400 is greater than the length of the fixed member 300 in the extending direction of the door 200. During the rotational opening or closing of the door 200, at least a portion of the movable member 400 does not contact the fixed member 300.

[0335] Compared to the thickness direction of the door body 200, the extension direction of the door body 200 has greater design freedom. By making the length of the movable part 400 greater than the length of the fixed part 300 in the extension direction of the door body 200, the movable part 400 can be arranged more in the extension direction of the door body 200, thereby increasing the contact area between the movable part 400 and the fixed part 300 in the extension direction of the door body 200.

[0336] During the process of rotating the door 200 to open or close, at least some of the moving parts 400 do not contact the fixed parts 300, and some of the moving parts 400 are in a suspended state, so that the door 200 can be connected through the suspended part, and the part of the moving part 400 that does not contact the fixed parts 300 is located at the end of the moving part 400 along the extension direction of the door 200.

[0337] The inclined portion 340 can be configured as a planar inclined portion 340, which has a plane, and the first end of the planar inclined portion 340 can be directly connected to the first contact portion 330.

[0338] Alternatively, the first end of the planar inclined portion 340 can be connected to the first contact portion 330 by means of an arc transition, etc. The planar inclined portion 340 can have the first part and the second part connected as described above. The first part of the planar inclined portion 340 can be used to contact the abutment portion 410, and the second part of the planar inclined portion 340 can be used to connect the hinge plate 360 ​​and other mounting base structures.

[0339] Alternatively, the bottom end of the planar inclined portion 340 can be used to form a second end of the planar inclined portion 340, that is, the bottom end of the planar inclined portion 340 can be used to connect the mounting base structure such as the hinge plate 360, or the bottom end of the planar inclined portion 340 can also be used to connect the second contact portion 350.

[0340] In some embodiments, the inclined portion 340 may also be configured as an arc-shaped inclined portion 340, which has an arc-shaped surface and may protrude away from the first contact portion 330. That is, from the first end of the arc-shaped inclined portion 340 to the second end of the arc-shaped inclined portion 340, the inclination angle of the arc-shaped inclined portion 340 gradually increases.

[0341] During the rotation and opening of the door 200, the abutment part 410 needs to move from the second end of the arc-shaped inclined part 340 to the first end of the arc-shaped inclined part 340. Since the inclination angle of the part of the arc-shaped inclined part 340 near the second end is large, the process of the abutment part 410 moving to the arc-shaped inclined part 340 is more laborious, which further improves the self-closing effect of the gravity self-closing structure.

[0342] Alternatively, the arc-shaped inclined portion 340 may be recessed away from the first contact portion 330, that is, from the first end of the arc-shaped inclined portion 340 to the second end of the arc-shaped inclined portion 340, the inclination angle of the arc-shaped inclined portion 340 gradually decreases.

[0343] During the process of rotating and opening the door 200, the abutment part 410 needs to move from the second end of the arc-shaped inclined part 340 to the first end of the arc-shaped inclined part 340. When the weight of the door 200 is large or the inclination angle of the arc-shaped inclined part 340 is large, the gravity self-closing effect of the gravity self-closing structure can be guaranteed. Since the inclination angle of the part of the arc-shaped inclined part 340 near the second end is small, the process of moving the abutment part 410 to the arc-shaped inclined part 340 is more effortless, making it more convenient for the user to rotate and open the door 200.

[0344] In some embodiments, the inclined portion 340 may also have multiple planes or multiple arcuate surfaces, or the inclined portion 340 may also have at least one plane and at least one arcuate surface, and both the plane and the arcuate surface are used to contact the abutment portion 410.

[0345] The inclined portion 340 may have multiple planes arranged sequentially in the vertical direction, and at least two of the planes have different inclination angles. For example, from the first end of the inclined portion 340 to the second end of the inclined portion 340, the inclination angles of the multiple planes may gradually decrease. When the weight of the door 200 is large or the inclination angle of the curved inclined portion 340 is large, the gravity self-closing effect of the gravity self-closing structure can be guaranteed. Since the inclination angle of the part of the inclined portion 340 near the second end is smaller, the process of the abutment portion 410 moving to the inclined portion 340 is more effortless, and the process of the user rotating to open the door 200 is more convenient.

[0346] For example, from the first end of the inclined portion 340 to the second end of the inclined portion 340, the inclination angle of multiple planes can gradually increase. During the rotation and opening of the door 200, the abutment portion 410 needs to move from the second end of the inclined portion 340 to the first end of the inclined portion 340. Since the inclination angle of the planes near the second end of the inclined portion 340 is larger, the process of the abutment portion 410 moving to the inclined portion 340 is more laborious, further improving the self-closing effect of the gravity self-closing structure.

[0347] The inclined portion 340 may have multiple arc-shaped surfaces. The arc-shaped surfaces may protrude from the first contact portion 330, and the inclination angle of the upper part of the arc-shaped surface is greater than the inclination angle of the lower part of the arc-shaped surface; or, the arc-shaped surfaces may be recessed from the first contact portion 330, and the inclination angle of the upper part of the arc-shaped surface is less than the inclination angle of the lower part of the arc-shaped surface.

[0348] In some embodiments, the fastener 300 may also be provided with at least one recessed structure. The recessed structure may be provided in at least one of the first contact portion 330, the inclined portion 340, and the second contact portion 350. For example, the recessed structure may be provided in the inclined portion 340, and the number of recessed structures may be set to multiple. Multiple recessed structures may be evenly provided in the inclined portion 340 to increase the stress on the inclined portion 340.

[0349] When the abutting part 410 comes into contact with the inclined part 340, the abutting part 410 will transfer part of the weight of the door body 200 to the fixing member 300. By setting the recessed structure, the contact area between the abutting part 410 and the inclined part 340 can be reduced, so that the stress between the abutting part 410 and the inclined part 340 is more concentrated, thereby improving the self-closing effect of the gravity self-closing structure.

[0350] In some embodiments, the abutment portion 410 can be reused to form the track groove 420, that is, the first hinge shaft 310 and the second hinge shaft 320 can pass through the abutment portion 410 so that at least a portion of the abutment portion 410 can surround the first hinge shaft 310 and the second hinge shaft 320, so that the first hinge shaft 310 and the second hinge shaft 320 can be inside the abutment portion 410, and the contact area between the abutment portion 410 and the fixing member 300 can be increased, thereby increasing the relative stability of the abutment portion 410 when the abutment portion 410 and the fixing member 300 move relative to each other.

[0351] In some embodiments, the abutment portion 410 may be formed with a sidewall, the inner surface of which surrounds a track groove 420 to increase the contact area between the abutment portion 410 and the fixing member 300 and increase the stability of the abutment portion 410 during movement.

[0352] The sidewall is configured such that its width is greater than or equal to 1 mm. The width of the sidewall can be uniformly set along the extension direction of the track groove 420, and can be set within any of the following width ranges: 1 mm - 1.2 mm, 1.2 mm - 1.4 mm, 1.4 mm - 1.6 mm, 1.6 mm - 1.8 mm, 1.8 mm - 2 mm, and 2 mm - 2.2 mm.

[0353] The wider the sidewall, the larger the contact area between the abutment part 410 and the fixing member 300, making the movement of the abutment part 410 relative to the fixing member 300 more stable.

[0354] Alternatively, the second sidewall is configured such that, along the extension direction of the track groove 420, at least a portion of the sidewall has a width greater than or equal to 1 millimeter.

[0355] Along the extension direction of the track groove 420, the width of the sidewall may be uneven, and at least part of the sidewall width may be set within any of the following width ranges: 1 mm-1.2 mm, 1.2 mm-1.4 mm, 1.4 mm-1.6 mm, 1.6 mm-1.8 mm, 1.8 mm-2 mm, and 2 mm-2.2 mm.

[0356] The abutment portion 410 has an inclined abutment surface formed on its surface facing the fixing member 300, which is used to mate with the inclined portion 340. In some embodiments, as shown in FIG21, a first abutment surface 411 is also formed on the surface of the abutment portion 410 facing the fixing member 300, and the first abutment surface 411 and the second abutment surface 412 form an inclination. The inclined abutment surface may be the second abutment surface 412.

[0357] In the direction facing the fastener 300, the inclination direction of the second abutment surface 412 is the same as the inclination direction of the inclined portion of the fastener 300.

[0358] In some embodiments, the second abutment surface 412 may be a portion of the surface of the movable member 400 facing the fixed member 300.

[0359] For example, as shown in FIG21, the abutment portion 410 may be provided with a first abutment surface 411 and a second abutment surface 412 connected to each other. The first abutment surface 411 may be arranged parallel to the horizontal plane and parallel to the first contact portion 330 and the second contact portion 350. The second abutment surface 412 may be arranged inclined relative to the vertical direction and parallel to the inclined portion 340, so as to make the movement process of the abutment portion 410 more stable. The connection position of the first abutment surface 411 and the second abutment surface 412 can be used to represent the bottom position of the abutment portion 410.

[0360] The movement process of the abutting part 410 will be described below with the bottom of the abutting part 410 abutting against the first contact part 330 as an example.

[0361] For example, during the rotational opening of the door 200, the first abutting surface 411 of the abutting part 410 abuts against the second contact part 350, so that the abutting part 410 can move horizontally from the second contact part 350 to the second end of the inclined part 340. Then, the second abutting surface 412 of the abutting part 410 abuts against the inclined part 340. The abutting part 410 moves obliquely upward from the second end of the inclined part 340 to the first end of the inclined part 340, and then moves through the first end of the inclined part 340 to the first contact part 330, so that the first abutting surface 411 of the abutting part 410 abuts against the first contact part 330. The first abutting surface 411 can move horizontally relative to the first contact surface, thereby realizing the opening process of the door 200.

[0362] During the rotation and closing process of the door 200, the first abutting surface 411 of the abutting part 410 abuts against the first contact part 330. The abutting part 410 can move horizontally from the first contact part 330 to the first end of the inclined part 340. Then, the second abutting surface 412 of the abutting part 410 abuts against the inclined part 340. The abutting part 410 moves downward at an angle from the first end of the inclined part 340 to the second end of the inclined part 340, and then moves to the second contact part 350 through the second end of the inclined part 340, so that the first abutting surface 411 of the abutting part 410 abuts against the second contact part 350. The first abutting surface 411 can move horizontally relative to the second contact surface, thereby realizing the closing process of the door 200.

[0363] The first part of the track groove 420 is located on the first abutment surface 411, and the second part of the track groove 420 is located on the second abutment surface 412; and / or, the first part of the track groove 420 is located on the first abutment surface 411, and the second part of the track groove 420 is located on the second abutment surface 412.

[0364] In some embodiments, the track groove 420 extends through the first abutment surface 411 and the second abutment surface 412. That is, the track groove 420 can extend from the first abutment surface 411 to the second abutment surface 412.

[0365] During the rotation and closing of the door 200, the first abutting surface 411 of the abutting part 410 abuts against the first contact part 330. The abutting part 410 can move horizontally from the first contact part 330 to the first end of the inclined part 340. Then, the second abutting surface 412 of the abutting part 410 abuts against the inclined part 340. The abutting part 410 moves downward at an angle from the first end of the inclined part 340 to the second end of the inclined part 340. The first hinge shaft 310 and the second hinge shaft 320 can be located within the first abutting surface 411 or the second abutting surface 412, thereby making the movement of the movable part 400 more stable.

[0366] For example, the abutting part 410 may also be provided with a third abutting surface 413, which is connected to the end of the second abutting surface 412 that is away from the first abutting surface 411. The third abutting surface 413 may be arranged parallel to the first contact part 330, that is, the third abutting surface 413 may be arranged parallel to the first abutting surface 411.

[0367] Alternatively, the movable component 400 may also have the aforementioned third abutment surface 413, which is connected to the first end of the second abutment surface 412. When the door 200 is in the closed state, the third abutment surface 413 faces the first contact portion 330.

[0368] The first part of the track groove 420 is located on the first abutment surface 411, the second part of the track groove 420 is located on the second abutment surface 412, and the third part of the track groove 420 is located on the third abutment surface 413.

[0369] The track groove 420 passes through the first abutment surface 411, the second abutment surface 412 and the third abutment surface 413, that is, the track groove 420 extends from the position of the first abutment surface 411 through the second abutment surface 412 to the third abutment surface 413.

[0370] In some embodiments, the second abutment surface 412 is a square inclined surface. The width and slope of the square inclined surface are the same as the width and slope of the inclined portion 340. As the abutment portion 410 moves from the first end of the inclined portion 340 downwards towards the second end of the inclined portion 340, the area of ​​the second abutment surface 412 in contact with the inclined surface of the inclined portion 340 increases or decreases. When the abutment portion 410 moves to the second end of the inclined portion 340, the second abutment surface 412 can be completely in contact with the inclined surface of the inclined portion 340.

[0371] During the rotation and closing of the door 200, the first abutting surface 411 of the abutting part 410 abuts against the first contact part 330. The abutting part 410 can move horizontally from the first contact part 330 to the first end of the inclined part 340. Then, the second abutting surface 412 of the abutting part 410 abuts against the inclined part 340. The abutting part 410 moves downward at an angle from the first end of the inclined part 340 to the second end of the inclined part 340. The first hinge shaft 310 and the second hinge shaft 320 can be located within the first abutting surface 411, the second abutting surface 412, or the third abutting surface 413, thereby making the movement of the movable part 400 more stable.

[0372] During the process of rotating the door 200 to open or close, when the abutting part 410 is facing the second contact part 350, the abutting part 410 can also be spaced apart from the second contact part 350. There is a gap between the first abutting surface 411 of the abutting part 410 and the second contact part 350, and the third abutting surface 413 can abut against the first contact part 330.

[0373] Alternatively, during the process of the door 200 rotating open or closed, when the abutment part 410 faces the second contact part 350, the abutment part 410 can also abut against the second contact part 350, the first abutment surface 411 abuts against the second contact part 350, and the third abutment surface 413 abuts against the first contact part 330, so that the movable part 400 can abut against the second contact part 350 through the first abutment surface 411 and against the first contact part 330 through the third abutment surface 413, thereby increasing the contact area between the abutment part 410 and the fixed part 300, making the movement of the movable part 400 more stable.

[0374] During the process of the door 200 rotating and closing, the lower end of the door 200 is spaced apart from the top surface of the fixing member 300.

[0375] The distance between the lower end of the door body 200 and the top surface of the fixing member 300 can be set to be greater than or equal to 0.5 mm and less than or equal to 2.5 mm. For example, the distance between the lower end of the door body 200 and the top surface of the fixing member 300 can be set within any of the following ranges: 0.5 mm-1 mm, 1 mm-1.5 mm, 1.5 mm-2 mm, and 2 mm-2.5 mm. Furthermore, the smaller the distance between the lower end of the door body 200 and the top surface of the fixing member 300, the more compact the overall structure of the gravity self-closing structure.

[0376] The number of pushing structures can be set to one, and the number of abutting parts 410 can be set to multiple. Multiple abutting parts 410 move the pushing structure at the same time, so that the relative movement process between the moving part 400 and the fixed part 300 is more stable.

[0377] It should be noted that in the movable part 400, the depth of the track groove 420 can be adjusted according to the position of the abutment part 410. For example, in some other embodiments, the track groove 420 may include a first part and a second part connected together. When the abutment part 410 abuts against the first contact part 330 and the inclined part 340, the first hinge shaft 310 is located in the first part of the track groove 420.

[0378] When the abutting part 410 abuts against the second contact part 350, the first hinge shaft 310 is located in the second part of the track groove 420, and the length of the first hinge shaft 310 in the second part of the track groove 420 is less than the length of the first hinge shaft 310 in the first part of the track groove 420.

[0379] For example, the depth of the second part of the track groove 420 may be less than the depth of the first part of the track groove 420, so that the first hinge shaft 310 can be closer to the bottom surface of the second part of the track groove 420, making the movement of the first hinge shaft 310 within the second part of the track groove 420 more stable.

[0380] For example, the track groove 420 may include a first part and a second part connected together. When the abutting part 410 abuts against the first contact part 330 and the inclined part 340, the second hinge shaft 320 is located in the first part of the track groove 420. When the abutting part 410 abuts against the second contact part 350, the second hinge shaft 320 is located in the second part of the track groove 420. The length of the second hinge shaft 320 in the second part of the track groove 420 is less than the length of the second hinge shaft 320 in the first part of the track groove 420.

[0381] For example, the depth of the second part of the track groove 420 can be less than the depth of the first part of the track groove 420, so that the second hinge shaft 320 can be closer to the bottom surface of the second part of the track groove 420, making the movement of the second hinge shaft 320 within the second part of the track groove 420 more stable.

[0382] For example, the track groove 420 may include a first part, a second part, and a third part connected together. When the abutting part 410 abuts against the first contact part 330, the first hinge shaft 310 is located within the first part of the track groove 420. When the abutting part 410 abuts against the inclined part 340, the first hinge shaft 310 is located within the second part of the track groove 420.

[0383] When the abutting part 410 abuts against the second contact part 350, the first hinge shaft 310 is located in the third part of the track groove 420, and during the process of the door body 200 rotating and closing, the length of the first hinge shaft 310 located in the second part of the track groove 420 gradually decreases; the length of the first hinge shaft 310 located in the third part of the track groove 420 is less than the length of the first hinge shaft 310 located in the first part of the track groove 420.

[0384] For example, the depth of the third part of the track groove 420 may be less than the depth of the first part of the track groove 420, and the depth of the second part of the track groove 420 gradually decreases from the first part of the track groove 420 to the third part of the track groove 420, so that the first hinge shaft 310 can get closer to the bottom surface of the second part of the track groove 420, making the movement of the first hinge shaft 310 in the second part of the track groove 420 more stable.

[0385] For example, the track groove 420 may include a first part, a second part and a third part connected together. When the abutting part 410 abuts against the first contact part 330, the second hinge shaft 320 is located in the first part of the track groove 420; when the abutting part 410 abuts against the inclined part 340, the second hinge shaft 320 is located in the second part of the track groove 420.

[0386] When the abutting part 410 abuts against the second contact part 350, the second hinge shaft 320 is located in the third part of the track groove 420, and during the process of the door body 200 rotating and closing, the length of the second hinge shaft 320 located in the second part of the track groove 420 gradually decreases; the length of the second hinge shaft 320 located in the third part of the track groove 420 is less than the length of the second hinge shaft 320 located in the first part of the track groove 420.

[0387] For example, the depth of the third part of the track groove 420 can be less than the depth of the first part of the track groove 420, and the depth of the second part of the track groove 420 gradually decreases from the first part of the track groove 420 to the third part of the track groove 420, so that the second hinge shaft 320 can get closer to the bottom surface of the second part of the track groove 420, making the movement of the second hinge shaft 320 in the second part of the track groove 420 more stable.

[0388] In some embodiments, the surface of the abutment portion 410 facing the fixing member 300 may be provided with an inclined protrusion, and an inclined surface is formed on the protrusion. The inclined surface engages with the inclined portion 340 during the rotation of the door. When the abutment portion 410 abuts against the second end of the inclined portion 340, the inclined surface and the inclined portion 340 can be completely fitted together.

[0389] In some embodiments, the abutment portion 410 may be provided with a contact element, which may be a ball or a roller, etc., to reduce the friction between the abutment portion 410 and the first contact portion 330, the inclined portion 340 and the second contact portion 350, so that the process of the door body 200 moving in the vertical direction is smoother.

[0390] For example, as shown in Figure 23, the number of contact elements can be set to one, and the contact element can be a roller. The roller can be disposed in the abutment portion 410, and the rotation axis of the roller can be parallel to one of the first contact portion 330, the inclined portion 340, and the second contact portion 350. The abutment portion 410 can be provided with a receiving groove that accommodates part of the roller. At least a portion of the roller extends out of the receiving groove so that at least a portion of the circumferential surface of the roller is exposed. The portion of the circumferential surface located outside the receiving groove is used to abut against the first contact portion 330, the inclined portion 340, and the second contact portion 350.

[0391] Alternatively, when the number of contacts can be set to multiple, the first part of the contacts can be arranged in a horizontal direction, and the first part of the contacts can be used to form the first abutting surface 411 of the abutting part 410. The first part of the contacts is used to abut against the first contact part 330 and the second contact part 350 to reduce the friction between the first abutting surface 411 of the abutting part 410 and the first contact part 330 and the second contact part 350 when moving in the horizontal direction.

[0392] The second part of the multiple contact members can be arranged in a direction parallel to the inclined portion 340, and the second part of the contact members can be used to form the second abutting surface 412 of the abutting portion 410. The second part of the contact members is used to abut against the inclined portion 340 to reduce the friction between the second abutting surface 412 of the abutting portion 410 and the inclined portion 340 when the door body 200 moves downward.

[0393] During the rotation and closing of the door 200, the abutment portion 410 rolls against the first contact portion 330 and the second contact portion 350 through the first part of the contact member, and rolls against the inclined portion 340 through the second part of the contact member, so that the abutment portion 410 can roll against the first contact portion 330, the inclined portion 340 and the second contact portion 350.

[0394] For example, the number of contact elements is set to multiple, and the contact elements can be set as balls. Multiple balls are mounted on the abutment portion 410, and at least a portion of each ball extends out of the abutment portion 410. The portion of the ball extending out of the abutment portion 410 is used to form at least one of the first abutment surface 411 and the second abutment surface 412. For example, the first portion of the ball is used to form the first abutment surface 411, and the second portion of the ball is used to form the second abutment surface 412.

[0395] The abutting portion 410 may be provided with a first mounting groove, which may extend in a direction parallel to the first abutting surface 411. The first mounting groove contains a first portion of the ball, and the ball located in the first mounting groove extends at least partially out of the first mounting groove. The portion of the ball extending out of the first mounting groove is used to form the first abutting surface 411.

[0396] The abutment portion 410 may be provided with a second mounting groove, which may extend in a direction parallel to the second abutment surface 412. The second mounting groove contains a second portion of the ball, and the ball located in the second mounting groove extends at least partially out of the second mounting groove. The portion of the ball extending out of the second mounting groove is used to form the second abutment surface 412.

[0397] For example, the number of contact elements is set to multiple, and the contact elements can be set as rollers. The rotation axis of the first roller is perpendicular to the extension direction of the inclined surface of the first inclined portion 340, and the circumferential surface of the first roller is used to form a first abutment surface 411. The rotation axis of the second roller is perpendicular to the extension direction of the inclined surface of the second inclined portion 340, and the rotation axis of the second roller can be arranged parallel to the rotation axis of the first roller. The circumferential surface of the second roller is used to form a second abutment surface 412.

[0398] In some embodiments, as shown in FIG22, the abutment portion 410 may be configured as a columnar abutment portion 410. The first end of the columnar abutment portion 410 is connected to the surface of the movable member 400 facing the fixed member 300. The columnar abutment portion 410 extends in the vertical direction. The second end of the columnar abutment portion 410 forms the bottom of the abutment portion 410. The second end of the columnar abutment portion 410 is used to abut against the first contact portion 330, the inclined portion 340 and the second contact portion 350, so that the movable member 400 drives the door body 200 to move in the vertical direction through the columnar abutment portion 410.

[0399] For example, the door body 200 can be reused to form the movable part 400, that is, the column-shaped abutment part 410 can be provided at the lower end of the door body 200, and the track groove 420 is provided at the lower end of the door body 200, so as to simplify the structure of the gravity self-closing structure.

[0400] The column-shaped abutment 410 can be integrally formed on the door body 200, or the column-shaped abutment 410 can be detachably formed on the lower end of the door body 200. For example, the first end of the column-shaped abutment 410 can be provided with threads so that the column-shaped abutment 410 can be threadedly connected to the lower end of the door body 200, and the second end of the column-shaped abutment 410 extends downward so that the disassembly and assembly process of the column-shaped abutment 410 is more convenient.

[0401] The column-shaped abutment part 410 can also be fixed to the lower end of the door body 200 by means of snap-fit ​​or other methods. When the column-shaped abutment part 410 is assembled to form a gravity self-closing structure, the first end of the column-shaped abutment part 410 can be inserted into the lower end of the door body 200, so that the column-shaped abutment part 410 is connected to the door body 200, thereby making the assembly process of the gravity self-closing structure more convenient.

[0402] During the rotation and closing process of the door 200, the second end of the column-shaped abutment 410 abuts against the first contact portion 330. The second end of the column-shaped abutment 410 can move horizontally from the first contact portion 330 to the first end of the inclined portion 340. Then, the second end of the column-shaped abutment 410 abuts against the inclined portion 340. The second end of the column-shaped abutment 410 moves downwards from the first end of the inclined portion 340 to the second end of the inclined portion 340, and then moves to the second contact portion 350 through the second end of the inclined portion 340, so that the second end of the column-shaped abutment 410 abuts against the second contact portion 350. The second end of the column-shaped abutment 410 can move horizontally relative to the second contact surface, thereby realizing the closing process of the door 200.

[0403] For example, the housing 100 can be reused to form the fastener 300. For instance, the hinge assembly located at the lower end of the door 200 can be reused to form the fastener 300. The hinge assembly can be provided with a hinge plate 360. The surface of the hinge plate 360 ​​facing the movable part 400 is provided with a first hinge shaft 310, a second hinge shaft 320, a first contact portion 330, an inclined portion 340, and a second contact portion 350, so that the fastener 300 is formed through the hinge plate 360, thereby making the structure of the gravity self-closing structure simpler.

[0404] The first hinge shaft 310 and the second hinge shaft 320 can both be fixed to the hinge plate 360 ​​by means of threads, etc. The first hinge shaft 310 is provided with a first threaded section and is threaded to the hinge plate 360 ​​through the first threaded section. The second hinge shaft 320 is provided with a second threaded section and is threaded to the hinge plate 360 ​​through the second threaded section, so that the process of connecting the first hinge shaft 310 and the second hinge shaft 320 to the hinge plate 360 ​​is more convenient.

[0405] The lower end of the door 200 is reused to form the movable part 400, and the hinge assembly of the box 100 is reused to form the fixed part 300, so as to make the assembly process of the gravity self-closing structure more convenient.

[0406] In some embodiments, as shown in FIG22, the second end of the cylindrical abutment portion 410 can be configured as an arc-shaped abutment end. 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 340, so that the circular abutment end always abuts against the first contact portion 330, the inclined portion 340 and the second contact portion 350 through the arc-shaped surface.

[0407] Alternatively, when the circular abutment end is provided with a hemispherical surface, the hemispherical surface protrudes towards the movable member 400, and the center of the hemispherical surface is located in the extending direction of the cylindrical abutment portion 410, so that the circular abutment end always abuts against the first contact portion 330, the inclined portion 340 and the second contact portion 350 through the arc surface.

[0408] The cylindrical abutment part 410 can abut against the first contact part 330, the inclined part 340 and the second contact part 350 through the circumferential surface of the cylinder, so as to increase the contact area between the cylindrical abutment part 410 and the first contact part 330, the inclined part 340 and the second contact part 350, making the process of the cylindrical abutment part 410 driving the door body 200 to move in the vertical direction more stable.

[0409] In some embodiments, the second end of the column-shaped abutment portion 410 may be provided with a rolling element, which may be a ball or a roller, etc., so as to reduce the friction between the column-shaped abutment portion 410 and the first contact portion 330, the inclined portion 340 and the second contact portion 350, so that the door body 200 moves more smoothly in the vertical direction.

[0410] For example, the rolling element can be set as a ball; the cylindrical abutment portion 410 is provided with a third mounting groove, which is located on the end face of the second end of the cylindrical abutment portion 410. A portion of the ball extends out of the third mounting groove, and the portion of the ball extending out of the third mounting groove forms the bottom of the cylindrical abutment portion 410. The portion of the ball extending out of the third mounting groove is used to abut against the first contact portion 330, the inclined portion 340 and the second contact portion 350 to reduce the friction between the cylindrical abutment portion 410 and the fixing member 300.

[0411] Alternatively, the rolling element can be configured as a roller, the rotation axis of the roller can be parallel to the inclined portion 340, and the bottom end of the circumferential surface of the roller forms the bottom end of the cylindrical abutment portion 410. The circumferential surface of the roller is used to abut against the first contact portion 330, the inclined portion 340 and the second contact portion 350 to reduce the friction between the cylindrical abutment portion 410 and the fixing element 300.

[0412] During the process of the cylindrical abutment portion 410 moving from the inclined portion 340 to the second contact portion 350 by the rolling member, the cylindrical abutment portion 410 can move quickly in the inclined portion 340 under the action of the rolling member, thereby reducing the possibility that the cylindrical abutment portion 410 stays on the surface of the inclined portion 340.

[0413] In some embodiments, the abutment portion 410 may be configured as a roller abutment portion 410. The roller abutment portion 410 is rotatably disposed on the surface of the movable member 400 facing the fixed member 300, and the peripheral surface of the roller abutment portion 410 is used to abut against the first contact portion 330, the inclined portion 340 and the second contact portion 350. The bottom end of the peripheral surface of the roller abutment portion 410 forms the bottom of the abutment portion 410, and the rotation axis of the roller abutment portion 410 may be parallel to one of the first contact portion 330, the inclined portion 340 and the second contact portion 350.

[0414] For example, the surface of the movable member 400 facing the fixed member 300 may be provided with a mounting bracket, and the mounting bracket is provided with a mounting hole for the rotation shaft of the roller abutment part 410 to pass through, so that the roller abutment part 410 can rotate relative to the movable member 400 via the rotation shaft and the mounting bracket.

[0415] During the rotation and closing process of the door 200, the bottom end of the roller-type abutment part 410 can abut against the first contact part 330. The bottom end of the roller-type abutment part 410 can move horizontally from the first contact part 330 to the first end of the inclined part 340. Then, the bottom end of the roller-type abutment part 410 abuts against the inclined part 340. The bottom end of the roller-type abutment part 410 moves downward from the first end of the inclined part 340 to the second end of the inclined part 340, and then moves to the second contact part 350 through the second end of the inclined part 340, so that the bottom end of the roller-type abutment part 410 abuts against the second contact part 350. The bottom end of the roller-type abutment part 410 can move horizontally relative to the second contact surface, thereby realizing the closing process of the door 200.

[0416] Furthermore, during the process of the roller-type abutment portion 410 moving from the inclined portion 340 to the second contact portion 350 by the rolling member, the roller-type abutment portion 410 can move quickly in the inclined portion 340 under the action of the rolling member, thereby reducing the possibility that the roller-type abutment portion 410 will remain on the surface of the inclined portion 340.

[0417] A first arc portion may be provided between the first contact portion 330 and the first end of the inclined portion 340, so that the process of the roller-type abutment portion 410 moving from the first contact portion 330 to the first end of the inclined portion 340 is more convenient. The curvature of the first arc portion may be less than or equal to the curvature of the roller-type abutment portion 410, so that the roller-type abutment portion 410 can move from the first contact portion 330 to the first end of the inclined portion 340 through the first arc portion, thereby making the process of the door body 200 moving downward in the vertical direction smoother.

[0418] An angled portion may be provided between the second end of the inclined portion 340 and the second contact portion 350, or a second arc portion may be provided between the second end of the inclined portion 340 and the second contact portion 350, and the curvature of the second arc portion may be greater than the curvature of the roller-type abutment portion 410. When the roller-type abutment portion 410 can move from the second contact portion 350 to the second end of the inclined portion 340, it is more difficult for the roller-type abutment portion 410 to move to the inclined portion 340 through the angled portion or the second arc portion, thereby increasing the difficulty for the roller-type abutment portion 410 to move to the inclined portion 340, and further reducing the possibility of a gap between the door body 200 and the box body 100.

[0419] In some embodiments, at least one of the first contact portion 330, the inclined portion 340, and the second contact portion 350 may be provided with a movable member, which may be configured as a ball or a roller, etc., to reduce the friction between the abutment portion 410 and the first contact portion 330, the abutment portion 410 and the second contact portion 350, so that the door body 200 moves more smoothly in the horizontal direction, and can reduce the friction between the abutment portion 410 and the inclined portion 340, so that the door body 200 moves more smoothly in the vertical direction.

[0420] For example, the number of movable members can be set to one or more. When the number of movable members is set to one, the contact member can be provided in the first contact portion 330, the inclined portion 340 and the second contact portion 350; or, the number of movable members can be set to multiple, and the multiple movable members can be used to form at least one of the first contact portion 330, the inclined portion 340 and the second contact portion 350.

[0421] When the number of movable members on the first contact portion 330 and / or the second contact portion 350 is set to multiple, the multiple movable members can be arranged parallel to the horizontal direction, and the multiple movable members can be reused to form the surface of the first contact portion 330 and / or the second contact portion 350 facing the movable member 400, so as to reduce the friction between the abutment portion 410 and the first contact portion 330, the abutment portion 410 and the second contact portion 350, so that the process of the door body 200 moving in the horizontal direction is smoother.

[0422] When the number of movable members on the inclined portion 340 is set to multiple, the multiple movable members can be arranged in a direction parallel to the inclined portion 340, and the multiple movable members can be reused to form the inclined surface of the inclined portion 340, so as to reduce the friction between the abutment portion 410 and the inclined portion 340 when the door body 200 moves up or down, making the process of the door body 200 moving in the vertical direction smoother.

[0423] 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.

[0424] In some embodiments, the first contact portion 330, the inclined portion 340, and the second contact portion 350 may be integrally formed. For example, the first contact portion 330, the inclined portion 340, and the second contact portion 350 may together form a pushing structure. The pushing structure is used in conjunction with the abutment portion 410. The number of pushing structures may be set to one or more. When the number of pushing structures is set to multiple, the number of abutment portions 410 is correspondingly set to multiple, so that each pushing structure can be used in conjunction with one abutment portion 410.

[0425] For example, the housing 100 can be reused to form the fastener 300. For instance, the hinge assembly located at the lower end of the door 200 can be reused to form the fastener 300. The hinge assembly can be provided with a hinge plate 360. The surface of the hinge plate 360 ​​facing the movable part 400 is provided with a first hinge shaft 310, a second hinge shaft 320, a first contact portion 330, an inclined portion 340, and a second contact portion 350, so that the fastener 300 is formed through the hinge plate 360, thereby making the structure of the gravity self-closing structure simpler.

[0426] The first hinge shaft 310 and the second hinge shaft 320 can both be fixed to the hinge plate 360 ​​by means of threads, etc. The first hinge shaft 310 is provided with a first threaded section and is threaded to the hinge plate 360 ​​through the first threaded section. The second hinge shaft 320 is provided with a second threaded section and is threaded to the hinge plate 360 ​​through the second threaded section, so that the process of connecting the first hinge shaft 310 and the second hinge shaft 320 to the hinge plate 360 ​​is more convenient.

[0427] The lower end of the door 200 is reused to form the movable part 400, and the hinge assembly of the box 100 is reused to form the fixed part 300, so as to make the assembly process of the gravity self-closing structure more convenient.

[0428] In some embodiments, along the extending directions of the first hinge axis 310 and the second hinge axis 320, the projected areas of the first inclined portion 340 and the second inclined portion 340 on the surface of the fixed member 300 toward the movable member 400 can be adjusted according to the magnitude of the second set angle, the third set angle, and the third set angle.

[0429] The hinge plate 360 ​​has pads on its surface opposite to the first hinge axis 310 and the second hinge axis 320. The hinge plate 360 ​​is supported by the pads so that the weight of the door 200 can be transferred to the ground through the pads, thereby reducing the stress on the hinge plate 360 ​​and reducing the possibility of bending and breaking of the hinge plate 360.

[0430] The hinge plate 360 ​​is also equipped with a rotatable roller. The roller has a rotating surface, and the bottom surface of the rotating surface is flush with the bottom of the pad. The rotating surface drives the box 100 to move, making the movement of the box 100 more convenient.

[0431] In some embodiments, the fastener 300 can be relatively fixedly disposed on the housing 100. For example, the fastener 300 can be directly connected to the housing 100, or the fastener 300 can also be connected to the housing 100 through a hinge assembly located at the lower end of the door 200. The materials of the fastener 300 and the movable part 400 can be set as POM material.

[0432] For example, the fastener 300 can be configured as a plate fastener 300 or a column fastener 300, etc. The first surface of the fastener 300 can face the housing 100, or the fastener 300 can also face the hinge plate 360 ​​of the hinge assembly. The second surface of the fastener 300 faces the lower end of the door 200, and the second surface of the fastener 300 is connected to the first hinge shaft 310 and the second hinge shaft 320.

[0433] As shown in Figure 24, the fastener 300 may be provided with at least one connector 370 so that the fastener 300 is relatively fixed to the housing 100 through the connector 370. For example, the fastener 300 can be fixed to the hinge plate 360 ​​of the hinge assembly through the connector 370.

[0434] The connector 370 can be configured as a connecting post, which can be fixedly mounted on the hinge plate 360. The first end of the connecting post is connected to the hinge plate 360, and the second end of the connecting post extends toward the movable member 400. The fixing member 300 is provided with a movable opening, and the connecting post passes through the movable opening so that the fixing member 300 can be relatively movable on the hinge plate 360 ​​along the extension direction of the connecting post. Thus, the fixing member 300 and the hinge plate 360 ​​can be fixed through the connecting post.

[0435] The connector 370 can also be configured as a fixing bolt, fixing pin, or other structure, or the connector 370 can also be configured as a snap-fit ​​connector, so that the fastener 300 can be detachably connected to the hinge plate 360 ​​by snap-fit ​​or other means.

[0436] The number of connectors 370 can be set to one or more. When the number of connectors 370 is set to multiple, the multiple connectors 370 can be evenly distributed on the fixing member 300, and the extension directions of the multiple connectors 370 are arranged parallel to each other, so that the process of the fixing member 300 moving along the extension direction of the connectors 370 is more stable.

[0437] For example, the first hinge shaft 310 and the second hinge shaft 320 may also be disposed on the hinge plate 360. The extension direction of the first hinge shaft 310 and the extension direction of the second hinge shaft 320 are both parallel to the extension direction of the connector 370. The fixing member 300 may be provided with two through holes, which are respectively used to pass through the first hinge shaft 310 and the second hinge shaft 320, so that the ends of the first hinge shaft 310 and the second hinge shaft 320 away from the hinge plate 360 ​​can pass through the fixing member 300 and extend toward the movable member 400. The fixing member 300 can move along the extension direction of the first connector 370 through the two through holes.

[0438] When the fastener 300 is fixed relative to the housing 100, the fastener 300 can be moved in a direction close to the hinge plate 360, so that the connecting post passes through the movable opening, and the first hinge shaft 310 and the second hinge shaft 320 fixed relative to the hinge plate 360 ​​can pass through the through hole. The first surface of the fastener 300 faces the hinge plate 360, thereby fixing the fastener 300 relative to the housing 100.

[0439] For example, as shown in Figure 24, the fastener 300 may also be provided with a connector 370. The first end of the connector 370 may be connected to the fastener 300, and the second end of the connector 370 may be connected to the hinge plate 360. The second end of the connector 370 may be extended and retracted along the extension direction of the connecting post so as to adjust the distance between the fastener 300 and the hinge plate 360.

[0440] The movable part 400 is relatively fixed to the door body 200. When the distance between the fixed part 300 and the hinge plate 360 ​​is adjusted by the connector 370, the distance between the movable part 400 and the fixed part 300 remains relatively fixed, allowing the distance between the movable part 400 and the door body 200 and the hinge plate 360 ​​to change. When it is necessary to adjust the height of the door body 200, the height of the door body 200 can be adjusted by adjusting the distance between the fixed part 300 and the hinge plate 360 ​​through the connector 370.

[0441] As shown in Figures 25 and 26, the fixing member 300 may be provided with an adjusting plate 380. The first surface of the adjusting plate 380 faces the connecting member 370, and the second surface of the adjusting plate 380 is connected to the fixing member 300, so that the fixing member 300 is connected to the adjusting plate 380 through the connecting member 370. The material of the adjusting plate 380 may be a metal material.

[0442] When the height of the fastener 300 needs to be adjusted, the height of the adjusting plate 380 can be changed through the connecting piece 370. This allows the fastener 300 to move up and down vertically through the adjusting plate 380, thereby reducing the possibility of the connecting piece 370 directly contacting the fastener 300 and reducing the possibility of the fastener 300 being damaged by collision.

[0443] The adjusting plate 380 may also be provided with at least one connecting part 381. The number of connecting parts 381 may be set to one or more. The connecting part 381 protrudes towards the fixing member 300 and is recessed away from the surface of the fixing member 300, so as to increase the support strength of the adjusting plate 380, increase the stability of the adjusting plate 380, and reduce the possibility of deformation of the adjusting plate 380.

[0444] The connector 370 can be configured as an adjusting bolt. The first end of the adjusting bolt can be rotatably connected to the fixing member 300, and the adjusting bolt can be threadedly connected to the hinge plate 360. The second end of the adjusting bolt can protrude from the surface of the fixing member 300 relative to the hinge plate 360. When it is necessary to adjust the distance between the fixing member 300 and the hinge plate 360, the adjusting bolt can be rotated so that the threaded rod of the adjusting bolt is screwed into or out of the hinge plate 360, thereby changing the length of the adjusting bolt located between the fixing member 300 and the hinge plate 360. This allows for the adjustment of the distance between the fixing member 300 and the hinge plate 360, and also enables the adjustment of the height of the refrigerator door 200, reducing the possibility of unevenness in the refrigerator door 200.

[0445] Furthermore, the connecting part 381 can be reused to connect the adjusting nut. The connecting part 381 can correspond to the center of gravity of the fixing plate 300. The surface of the connecting part 381 facing away from the fixing member 300 can be reused to connect the adjusting bolt. The connecting part 381 can play a certain positioning role for the adjusting bolt, so that the process of the adjusting bolt driving the fixing member 300 to move up and down in the vertical direction through the adjusting plate 380 is more stable.

[0446] Alternatively, in some embodiments, the adjusting plate 380 can be replaced by an adjusting nut, which can be threaded to the connecting post (e.g., the connecting member 370 is the connecting post), and the adjusting nut abuts against the fixing member 300 on the surface away from the hinge plate 360. When it is necessary to adjust the distance between the fixing member 300 and the hinge plate 360, the adjusting nut can be rotated to move the adjusting nut along the extension direction of the connecting post, thereby changing the length of the connecting post located between the fixing member 300 and the hinge plate 360, so as to realize the adjustment process of the distance between the fixing member 300 and the hinge plate 360.

[0447] In one embodiment, the connector 370 can also be reused to form a structure including an adjusting nut and an adjusting bolt. For example, the adjusting nut of the connector 370 can be rotatably disposed on the hinge plate 360 ​​about the extension direction of the connector 370, and the first end of the connector 370 protrudes from the surface of the hinge plate 360 ​​away from the fixing member 300. The connector 370 is threadedly connected to the fixing member 300. When it is necessary to adjust the distance between the fixing member 300 and the hinge plate 360, the adjusting nut of the connector 370 can be rotated to screw the threaded rod of the connector 370 into or out of the fixing member 300, thereby changing the length of the connector 370 located between the fixing member 300 and the hinge plate 360, so as to realize the adjustment process of the distance between the fixing member 300 and the hinge plate 360.

[0448] Alternatively, the adjusting nut of the connector 370 can be rotatably mounted on the fixing member 300 about the extension direction of the connector 370, and the first end of the connector 370 protrudes from the surface of the hinge plate 360 ​​relative to the fixing member 300. The connector 370 is threadedly connected to the hinge plate 360. When it is necessary to adjust the distance between the fixing member 300 and the hinge plate 360, the adjusting nut of the connector 370 can be rotated to screw the threaded rod of the connector 370 into or out of the hinge plate 360, thereby changing the length of the connector 370 located between the fixing member 300 and the hinge plate 360, so as to realize the adjustment process of the distance between the fixing member 300 and the hinge plate 360.

[0449] The first hinge axis 310 and the second hinge axis 320 can be disposed on the hinge plate 360, and the first hinge axis 310 and the second hinge axis 320 pass through the adjusting plate 380 and the fixing member 300, such that at least a portion of the first hinge axis 310 and the second hinge axis 320 extends toward the moving member 400, and the length of the first hinge axis 310 and the second hinge axis 320 can be greater than or equal to 8 mm and less than or equal to 18 mm. For example, the length of the first hinge axis 310 and the second hinge axis 320 can be set to any length range of 8 mm-10 mm, 10 mm-12 mm, 12 mm-14 mm, 14 mm-16 mm, and 16 mm-18 mm.

[0450] Furthermore, the adjustment range of the height of the connector 370 adjusting the fastener 300 can be set to be greater than or equal to 0.5 mm and less than or equal to 3.5 mm. For example, the adjustment range of the height of the connector 370 adjusting the fastener 300 can be set to any one of the following: 0.5 mm-1 mm, 1 mm-1.5 mm, 1.5 mm-2 mm, 2 mm-2.5 mm, 2.5 mm-3 mm, and 3 mm-3.5 mm.

[0451] The lengths of the first hinge shaft 310 and the second hinge shaft 320 affect the adjustment range of the height of the fastener 300 by the connector 370. For example, the greater the lengths of the first hinge shaft 310 and the second hinge shaft 320, and the longer the first hinge shaft 310 and the second hinge shaft 320 extend beyond the fastener 300, the greater the adjustment range of the height of the fastener 300 by the connector 370.

[0452] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0453] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, comprising: Box; The door is rotatably mounted on the housing; The gravity-operated self-closing structure includes a fixing component and a movable component that cooperate with each other. The fixing component is disposed in the housing, and the movable component is fixedly disposed in the door. The movable component is provided with a track groove; the fixed component is provided with a first hinge shaft and a second hinge shaft spaced apart, the first hinge shaft and the second hinge shaft can move in the track groove; The movable component is provided with an abutting portion facing the fixed component; the fixed component has an inclined portion facing the movable component, the inclined portion having a high end and a low end; During the process of the door rotating and closing, the first hinge shaft and the second hinge shaft move within the track groove along the extension direction of the track groove, the abutting part moves at least from the high end of the inclined part toward the low end of the inclined part, and the door body generates a downward displacement in the vertical direction.

2. The refrigerator according to claim 1, wherein, The trajectory slot includes a first slot segment, a second slot segment, and a third slot segment connected in sequence; the curvature of the first slot segment is less than the curvature of the second slot segment, and the curvature of the second slot segment is greater than the curvature of the third slot segment.

3. The refrigerator according to claim 2, wherein, The first hinge shaft and the second hinge shaft are movably disposed within the track groove, with the first hinge shaft being closer to the second end of the track groove than the second hinge shaft; When the door is in the closed state, the first hinge shaft and the second hinge shaft are located in the first groove segment, and the second hinge shaft is located at the first end of the track groove.

4. The refrigerator according to claim 3, wherein, The track groove has a first inflection point and a second inflection point set at intervals. The first inflection point is closer to the second end of the track groove than the second inflection point. The first inflection point separates the first groove segment and the second groove segment, and the second inflection point separates the second groove segment and the third groove segment.

5. The refrigerator according to claim 4, wherein, The first end of the track groove is close to the front wall of the door body relative to the first inflection point, and the first end of the first groove segment is far away from the side wall of the door body relative to the first inflection point. The first inflection point is closer to the rear wall of the door body relative to the second inflection point, and the first inflection point is farther away from the side wall of the door body relative to the second inflection point; The second inflection point is away from the front wall of the door body relative to the second end of the track groove, and the second inflection point is close to the side wall of the door body relative to the second end of the track groove.

6. The refrigerator according to claim 2, wherein, The first groove segment, the second groove segment, and the third groove segment form a continuous arc-shaped groove.

7. The refrigerator according to claim 1, wherein, The first hinge shaft contacts the track groove to form a first contact point, the second hinge shaft contacts the track groove to form a second contact point, and the abutting portion contacts one of the first inclined portion and the second inclined portion to form a third contact point. The first contact point, the second contact point, and the third contact point are not collinear.

8. The refrigerator according to claim 1, wherein, The fixed member has a ramp formed on its surface facing the movable member. The ramp is located on the path of the door during the opening or closing process, and the ramp includes the inclined portion.

9. The refrigerator according to claim 8, wherein, The ramp is part of the surface of the fastener; the ramp is integrally formed during the formation of the fastener.

10. The refrigerator according to claim 8 or 9, wherein, The ramp includes a first contact portion and an inclined portion, the inclined portion being connected to the first contact portion, the inclined portion being an inclined surface, and the high end of the inclined portion being connected to the first contact portion.

11. The refrigerator according to claim 10, wherein, The ramp also includes a second contact portion, which is connected to the lower end of the inclined portion.

12. The refrigerator according to claim 11, wherein, The first contact portion, the inclined portion, and the second contact portion constitute the surface of the fixing member facing the moving member.

13. The refrigerator according to claim 1, wherein, The fastener includes a first contact portion and a second contact portion. The first contact portion is connected to a first end of the inclined portion, and the second contact portion is connected to a second end of the inclined portion. The height of the second contact portion is less than the height of the first contact portion. During the process of the door rotating and closing, the abutting part moves from the first contact part through the inclined part to the second contact part; when the door is in the closed state, the abutting part faces the second contact part.

14. The refrigerator according to claim 13, wherein, The first end of the inclined portion is connected to the first contact portion, the second end of the inclined portion is connected to the second contact portion, the first end of the inclined portion is higher than the second end of the inclined portion, and the first contact portion is closer to the movable part relative to the second contact portion.

15. The refrigerator according to claim 13, wherein, At least one of the first contact portion and the second contact portion is arranged parallel to each other on a horizontal plane.

16. The refrigerator according to claim 13, wherein, In the horizontal direction, the length of the first contact portion is greater than or equal to the length of the second contact portion, and the length of the first contact portion is greater than the length of the inclined portion.

17. The refrigerator according to claim 13, wherein, The inclined portion is configured as a square inclined portion, and the angle between the extension direction of the square inclined portion and the line connecting the first hinge axis and the second hinge axis is greater than or equal to 75 degrees and less than or equal to 105 degrees.

18. The refrigerator according to claim 13, wherein, The inclined portion extends obliquely along the width direction of the fixing member.

19. The refrigerator according to claim 1, wherein, The surface of the abutting part facing the fixing member has an inclined abutting surface, which is used to cooperate with the inclined part.

20. The refrigerator according to claim 18, wherein, In the direction facing the fastener, the inclination direction of the abutment surface is the same as the inclination direction of the inclined portion of the fastener.

21. The refrigerator according to claim 1, wherein, The abutting part is provided with a first abutting surface and a second abutting surface connected to each other. The first abutting surface can be arranged parallel to the horizontal plane, and the second abutting surface is arranged inclined relative to the vertical direction and parallel to the inclined part.

22. The refrigerator according to claim 13, wherein, The abutting portion has a first abutting surface, a second abutting surface and a third abutting surface, the first abutting surface is parallel to the second contact portion, the second abutting surface is parallel to the inclined portion, and the third abutting surface is parallel to the first contact portion; When the door is in the closed state, the first abutting surface abuts against the second contact portion, and / or the third abutting surface abuts against the first contact portion.

23. The refrigerator according to claim 22, wherein, The second abutment surface connects the first abutment surface and the third abutment surface.

24. The refrigerator according to claim 22, wherein, The track groove extends from the location of the first abutment surface, through the second abutment surface, to the third abutment surface.

25. The refrigerator according to claim 22, wherein, The second contact surface is a square inclined surface, and the width and slope of the square inclined surface are the same as the width and slope of the inclined portion.

26. The refrigerator according to claim 22, wherein, The first abutting surface, the second abutting surface, and the third abutting surface form the surface of the movable member facing the fixed member.

27. The refrigerator according to claim 1, wherein, The abutting part is configured as a column-shaped abutting part or a roller-shaped abutting part.

28. The refrigerator according to claim 1, wherein, The fastener has two through holes through which the first hinge shaft and the second hinge shaft pass.

29. The refrigerator according to claim 28, wherein, The fastener includes a first contact portion and a second contact portion. The first contact portion is connected to the first end of the inclined portion, and the second contact portion is connected to the second end of the inclined portion. The height of the second contact portion is less than the height of the first contact portion. The two through holes are respectively provided at the first contact portion and the second contact portion.

30. The refrigerator according to claim 28 or 29, wherein, A hinge plate is provided at the lower end of the housing, and one end of the first hinge shaft and the second hinge shaft are provided on the hinge plate; the fastener is located on the hinge plate, and the other end of the first hinge shaft and the second hinge shaft passes through the two through holes of the fastener; the fastener is provided with the first hinge shaft and the second hinge shaft through the hinge plate.

31. The refrigerator according to claim 1, wherein, The first hinge shaft and the second hinge shaft are mounted on the fixing member.

32. The refrigerator according to claim 1, wherein, The refrigerator also has a matching locking hook and a stop, the stop being used to cooperate with the locking hook to lock and unlock the door and the cabinet.

33. A refrigerator, wherein, Includes the enclosure, door, and gravity-operated self-closing structure; The door is used to close or open the receiving cavity of the box; the gravity self-closing structure is disposed at the lower end of the door, and the gravity self-closing structure includes a fixed part and a movable part, the fixed part is disposed in the box, and the movable part is disposed in the door; The movable component is provided with a track groove, which faces the fixed component; the fixed component is provided with a first hinge axis and a second hinge axis, which can move along the extension direction of the track groove. The movable part is provided with an abutting part facing the fixed part; the fixed part also has an inclined part facing the movable part, the first end of the inclined part is higher than the second end of the inclined part, and the inclined part is inclined downward from the first end to the second end. During the process of the door rotating and closing, the first hinge shaft and the second hinge shaft move within the track groove along the extension direction of the track groove, the abutting part abuts at least with the inclined part, the abutting part moves from the first end of the inclined part toward the second end of the inclined part, and the door body generates a downward displacement in the vertical direction.

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