Refrigerator

Abstract

The utility model provides a refrigerator which comprises a door body, a first hinge piece connected with a refrigerator body, a second hinge piece connected with the door body and matched with the first hinge piece, a movable piece fixed to the lower end of the door body and a fixed piece located on the second hinge piece and matched with the movable piece. The first hinge piece comprises a hinge plate connected to the box body, a first hinge shaft and a second hinge shaft, wherein the first hinge shaft and the second hinge shaft are arranged on the hinge plate. The first hinge shaft is located on the second hinge shaft and close to the first body side wall. The fixing piece comprises a first guiding part located on the side, away from the first body side wall, of the second hinge shaft. A first gap mu is formed between the plane of the opening of the first through hole far away from the hinge plate and the plane of the opening of the second through hole far away from the hinge plate, and mu is greater than 0; the distance between the gravity action of the door body and the contact matching stress supporting position of the movable part and the fixed part is large, and the moment generated by the gravity action of the door body is large, so that the moment generated by gravity is enough to enable the door body to be automatically closed.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a refrigerator. Background Art

[0002] Currently, to meet the needs of embedded installations, most systems employ dual shafts on one of the door and the housing, and a guide structure on the other to control the inward movement of the door as it rotates open. The combination of the dual shafts and the guide structure allows the door to move inward during opening, ensuring that the corners of the door do not extend significantly beyond the dimensions of the housing.

[0003] In order to ensure the sealing between the door body and the box body when closing, a gravity self-closing structure is set to utilize the door body's own gravity to make the door body have a tendency to close automatically in the final stage of closing, so that the door body keeps a tendency to approach the box body, thereby making the door body seal the box body.

[0004] However, in actual practice, when the door's gravity self-closing structure is in effect, the door often has a tendency to close automatically under its own gravity, but it is not enough to close the door in place, resulting in the door being unable to effectively seal the box.

[0005] In view of this, this application is filed. Summary of the Invention

[0006] The present application provides a refrigerator, in which during the action of the gravity self-closing structure, the gravity of the door body is far away from the contact and force-supporting position of the movable part and the fixed part, and the torque generated by the gravity of the door body is large, so that the torque generated by the gravity is sufficient to automatically close the door body.

[0007] The present application provides a refrigerator comprising:

[0008] The box body defines a plurality of accommodating cavities; the box body has a first side wall and a second side wall that are oppositely arranged;

[0009] a door body, the door body being rotatably disposed on the box body to close or open the accommodating cavity;

[0010] A hinge assembly connects the door body to the box body so that the door body can be flipped relative to the box body; the hinge assembly includes:

[0011] A first hinge member is provided on the box body and is close to the side wall of the first body; the first hinge member includes:

[0012] a hinge plate connected to the box body;

[0013] A first hinge axis and a second hinge axis are provided on the hinge plate; the first hinge axis is located where the second hinge axis is close to the side wall of the first body;

[0014] A second hinge member is provided on the door body; the second hinge member comprises:

[0015] A first track groove and a second track groove; wherein the first hinge shaft cooperates with the first track groove, and the second hinge shaft cooperates with the second track groove, so that the door body moves relative to the box body;

[0016] A gravity self-closing structure is located on the lower side of the door body; the gravity self-closing structure includes:

[0017] A movable part is located at the lower end of the door body; the movable part includes:

[0018] a second guide portion, which is provided at the lower end portion of the door body;

[0019] A fixing member connected to the hinge plate located on the lower side of the door body; the fixing member includes:

[0020] a first guide portion, which is used to cooperate with the second guide portion to enable the door body to move along the height direction of the box body in a direction away from the top wall of the box body under the action of its gravity;

[0021] a supporting portion, which cooperates with the movable member to support the door body;

[0022] a first through hole passing through the support portion; the first hinge shaft passes through the first through hole;

[0023] a second through hole passing through the fixing member; the second hinge shaft passing through the second through hole; and the first guide portion being located on a side of the second hinge shaft away from the side wall of the first body;

[0024] The plane where the first through hole passes through the support portion and is away from the opening of one end of the hinge plate is recorded as the first plane, and the plane where the second through hole is away from the opening of one end of the hinge plate is recorded as the second plane;

[0025] The first plane is located on a side of the second plane away from the hinge plate; a first gap μ is formed between the first plane and the second plane, where μ>0;

[0026] During the process of the door body closing from an open state and the first guide portion interacting with the second guide portion, the first plane of the support portion cooperates with the movable part, the support portion supports the door body, and the second plane does not interact with the door body.

[0027] In the above technical solution, the first guide portion provided on the fixed part is located on the side of the second hinge axis away from the first hinge axis, and the fixed part and the movable part cooperate through the support portion surrounding the first hinge axis. When the first guide portion and the second guide portion of the gravity self-closing structure interact with each other, the gravity of the door is far away from the contact and matching force support position of the movable part and the fixed part (the matching position of the support portion and the movable part), and the torque generated by the gravity of the door is large, which is more conducive to the door body rising and falling under the action of its gravity, so that the torque generated by gravity is sufficient to make the door body close automatically.

[0028] In some embodiments of the present application,

[0029] The end surface of the fixing member close to the hinge plate is recorded as a fixed matching surface;

[0030] Along the direction of the central axis of the first hinge shaft, the point on the first guide portion at the maximum distance from the fixed matching surface is recorded as the first maximum adjustment point A1;

[0031] The first maximum adjustment point A1 is located on a side of the first hinge axis away from the rear wall of the box; the first maximum adjustment point A1 is located on a side of the second hinge axis close to the rear wall of the box.

[0032] In the above technical solution, the relative positional relationship between the first maximum adjustment point A1 and the first hinge axis and the second hinge axis in the front-to-back direction is further defined. When there is a height difference between the first maximum adjustment point A1 and the second plane of the support portion, and when the gravitational potential energy is at its maximum during the action of the gravity self-closing structure (the first maximum adjustment point A1 of the first guide portion is the action point), the definition of the above solution will limit the inclination of the door body to a smaller range, so as to effectively ensure the matching relationship between the first hinge axis and the first track groove, and the second hinge axis and the second track groove, and avoid excessive force between the double axes and the double grooves due to excessive inclination of the door body, which will cause the door body to be unable to open or close smoothly.

[0033] In some embodiments of the present application,

[0034] The fixing member further comprises:

[0035] a fixed plate connected to the hinge plate located at the lower side of the door body; the first guide portion is provided on the fixed plate;

[0036] The movable part further comprises:

[0037] a movable plate fixedly connected to the lower end of the door body; the second guide portion is provided on the movable plate;

[0038] The first guide portion includes:

[0039] a first inclined surface, wherein a first end of the first inclined surface is connected to the first portion of the fixing plate; and a second end of the first inclined surface is farther away from the fixing plate than the first end of the first inclined surface;

[0040] a second inclined surface, wherein a first end of the second inclined surface is connected to the second portion of the fixing plate; a second end of the second inclined surface is connected to the second end of the first inclined surface; and the second end of the second inclined surface is farther away from the fixing plate than the first end of the second inclined surface;

[0041] A first protrusion having the largest distance from the fixing plate is formed at a connection between the second end of the first inclined surface and the second end of the second inclined surface;

[0042] The second guide portion includes:

[0043] a third inclined surface, wherein a first end of the third inclined surface is connected to the first portion of the movable plate; and a second end of the third inclined surface is farther away from the movable plate than the first end of the third inclined surface;

[0044] a fourth inclined surface, wherein a first end of the fourth inclined surface is connected to the second portion of the movable plate; a second end of the fourth inclined surface is connected to the second end of the third inclined surface; and the second end of the fourth inclined surface is farther away from the movable plate than the first end of the fourth inclined surface;

[0045] A second convex portion having the largest distance from the movable plate is formed at a connection between the second end of the third inclined surface and the second end of the fourth inclined surface;

[0046] The third inclined surface is used to cooperate with the second inclined surface, the fourth inclined surface is used to cooperate with the first inclined surface, and the second convex portion is used to cooperate with the first convex portion.

[0047] In the above technical solution, the specific setting form of the first guide part and the second guide part is defined, and the structure is simple and easy to form; in addition, the setting of the inclined surface makes the interaction between the first guide part and the second guide part smoother and more fluent.

[0048] In some embodiments of the present application,

[0049] The refrigerator further comprises:

[0050] A height adjustment component is used to adjust the height of the door body relative to the box body; the height adjustment component includes:

[0051] a backing plate, which is provided between the hinge plate and the fixing member;

[0052] a height-adjusting bolt passing through the hinge plate and capable of moving relative to the hinge plate along the central axis of the height-adjusting bolt; the height-adjusting bolt is located on a side of the backing plate away from the fixing member;

[0053] a first guide post, which is provided at an end of the first hinge shaft close to the hinge plate;

[0054] a second guide post, which is provided at an end of the second hinge shaft close to the hinge plate;

[0055] Wherein, the pad and the fixing member are mounted on the first guide post and the second guide post;

[0056] Wherein, in a plane projection perpendicular to the central axis of the height-adjusting bolt, the central axis of the first guide column, the central axis of the second guide column, and the central axis of the height-adjusting bolt are not on the same straight line;

[0057] The position of the height-adjusting bolt relative to the hinge plate is adjusted, and the height-adjusting bolt drives the pad and the fixing member to move along the first guide column and the second guide column, and drives the door body to move along the central axis of the height-adjusting bolt.

[0058] In the above technical solution, through the surface contact support between the height adjustment bolt and the pad, under the guiding action of the first guide column and the second guide column on the pad, the two-dimensional plane movement of the pad and the like in the plane perpendicular to the central axis of the height adjustment bolt is effectively restricted, so that it can only move along the central axis of the height adjustment bolt. In addition, through the above surface contact support between the height adjustment bolt and the pad, combined with the guidance of the pad by the first guide column and the second guide column, the pad can move smoothly along the central axis of the height adjustment bolt without tilting, which can avoid the pad from getting stuck due to the interaction with the first guide column and / or the second guide column during movement, resulting in failure of height adjustment, thereby avoiding the tilt of the adjusted pad (fixed part) and the tilt of the adjusted door body, which causes excessive stress when interacting with the gravity self-closing structure of the door.

[0059] In some embodiments of the present application,

[0060] The box body includes a first side wall and a second side wall that are oppositely arranged; the first hinge is arranged on the box body and is close to the first side wall;

[0061] The accommodating cavity has a taking-in and putting-out opening for taking and putting items;

[0062] The first hinge axis is located on a side of the second hinge axis close to the side wall of the first body and close to the plane where the access opening is located;

[0063] In a plane projection perpendicular to the central axis of the height adjustment bolt, the projection of the central axis of the height adjustment bolt is marked as the height adjustment bolt projection point T, the projection of the central axis of the first guide post is marked as the first guide post projection point J1, and the projection of the central axis of the second guide post is marked as the second guide post projection point J2;

[0064] Among them, the height adjustment bolt projection point T is located on the side of the first guide column projection point J1 away from the first body side wall and close to the plane where the pick-up and release port is located, and the height adjustment bolt projection point T is located on the side of the second guide column projection point J2 close to the first body side wall and the plane where the pick-up and release port is located.

[0065] In the above technical solution, the relative positions of the height-adjusting bolt, the first guide column and the second guide column are defined, so that along the width direction of the box body, the height-adjusting bolt is located between the first guide column and the second guide column, so that the surface support effect of the height-adjusting bolt, the guiding effect of the first guide column and the guiding effect of the second guide column are more balanced, so that the height of the door body can be adjusted in a balanced manner without tilting.

[0066] In some embodiments of the present application,

[0067] The fixing member is provided with a first fixing hole; the backing plate is provided with a first connecting hole; the hinge plate is provided with the first hinge hole; wherein the positions of the first fixing hole, the first connecting hole and the first hinge hole correspond to each other;

[0068] The refrigerator further comprises:

[0069] A first fastener passes through the first fixing hole and is fixedly connected to the first connecting hole, and an end of the first fastener located on the side of the backing plate away from the fixing member passes through the first hinge hole.

[0070] In the above technical solution, the first fastener is fixedly connected only to the first connecting hole, which reduces the connection and fixing length between the first fastener and other components and facilitates installation.

[0071] In some embodiments of the present application,

[0072] The first fastener passes through the first hinge hole and is located at an end of the hinge plate away from the fixing member to form a limit ring by riveting; the outer diameter of the limit ring is larger than the inner diameter of the first hinge hole;

[0073] The sum of the thicknesses of the fixing member, the backing plate, and the hinge plate around the first fastener is denoted as h, and the length of the first fastener is denoted as L; wherein L is greater than h.

[0074] In the above technical solution, the setting of the limit ring can prevent the fixing member and the backing plate from falling off the hinge plate, and at the same time ensure that the connected fixing member and the backing plate can move a certain distance relative to the hinge plate along the axis direction of the first fastener.

[0075] In some embodiments of the present application,

[0076] The fixing piece is provided with a second fixing hole;

[0077] The backing plate is provided with a second connecting hole;

[0078] The hinge plate is provided with a second hinge hole; the positions of the second fixing hole, the second connecting hole and the second hinge hole correspond to each other;

[0079] The refrigerator further comprises:

[0080] The second fastener passes through the second fixing hole and is fixedly connected to the second connecting hole. The end of the second fastener located on the side of the backing plate away from the fixing member is located in the second hinge hole.

[0081] In the above technical solution, the second fastener is fixedly connected only to the second connecting hole, which reduces the connection and fixing length of the second fastener and other components, making installation easier.

[0082] In some embodiments of the present application,

[0083] In the projection of the plane where the hinge plate is located, the first guide post is located on a side of the second guide post close to the first body side wall and the rear wall of the box body;

[0084] The first fastener is located on a side of the first hinge axis close to the first body side wall and close to the rear wall of the box body; the second fastener is located on a side of the second hinge axis away from the first body side wall and close to the rear wall of the box body;

[0085] Wherein, the second fastener and the first fastener are both located on a side of the first hinge axis and the second hinge axis close to the rear wall of the box body.

[0086] In the above technical solution, when the fixedly connected fixing member and the pad move toward the side away from the hinge plate, the first fastener moves along the first hinge hole, the second fastener moves along the second hinge hole, the first through hole and the first guide hole move relative to the first hinge axis, and the second through hole and the second guide hole move relative to the second hinge axis.

[0087] The first guide post and the second guide post play a primary guiding role, and the second fastener and the first fastener play an auxiliary guiding role. The second fastener, the first fastener, the first guide post, and the second guide post jointly guide the fixedly connected fixing member and the backing plate, so that the fixedly connected fixing member and the backing plate can move in a direction perpendicular to the hinge plate, avoiding displacement such as offset or tilt, so that the backing plate and the hinge plate in the fixedly connected fixing member and the backing plate after adjustment remain parallel, so that the adjusted position of the door body does not deviate or tilt, reducing the unbalanced stress caused by the interaction between the fixed member and the movable member of the gravity self-closing structure, ensuring the effective life of the gravity self-closing structure and the effectiveness of the gravity self-closing structure in promoting the automatic closing of the door body under its own gravity.

[0088] The present application also provides another refrigerator, comprising:

[0089] The box body defines a plurality of accommodating cavities; the box body has a first side wall and a second side wall that are oppositely arranged;

[0090] a door body, the door body being rotatably disposed on the box body to close or open the accommodating cavity;

[0091] A hinge assembly connects the door body to the box body so that the door body can be flipped relative to the box body; the hinge assembly includes:

[0092] A first hinge member is provided on the box body and is close to the side wall of the first body; the first hinge member includes:

[0093] a hinge plate connected to the box body;

[0094] A first hinge axis and a second hinge axis are provided on the hinge plate; the first hinge axis is located where the second hinge axis is close to the side wall of the first body;

[0095] A second hinge member is provided on the door body; the second hinge member comprises:

[0096] A first track groove and a second track groove; wherein the first hinge shaft cooperates with the first track groove, and the second hinge shaft cooperates with the second track groove, so that the door body moves relative to the box body;

[0097] A gravity self-closing structure is located on the lower side of the door body; the gravity self-closing structure includes:

[0098] A movable member fixed to the lower end of the door body; the movable member includes:

[0099] a second guide portion, which is provided at the lower end portion of the door body;

[0100] A fixing member connected to the hinge plate located on the lower side of the door body; the fixing member includes:

[0101] a first guide portion, which is used to cooperate with the second guide portion to enable the door body to move along the height direction of the box body in a direction away from the top wall of the box body under the action of its gravity;

[0102] a supporting portion, which cooperates with the movable member to support the door body;

[0103] a first through hole passing through the support portion; the first hinge shaft passes through the first through hole;

[0104] a second through hole passing through the fixing member; the second hinge shaft passing through the second through hole; a distance between the first guide portion and the first hinge shaft being greater than a distance between the first guide portion and the second hinge shaft;

[0105] The plane where the first through hole passes through the support portion and is away from the opening of one end of the hinge plate is recorded as the first plane, and the plane where the second through hole is away from the opening of one end of the hinge plate is recorded as the second plane; the end surface of the fixing member close to the hinge plate is recorded as the fixing mating surface;

[0106] The distance between the second plane and the fixed mating surface is recorded as X1;

[0107] The distance between the first plane and the fixed mating surface is recorded as X2; wherein X1<X2;

[0108] During the process of the door body closing from an open state and the first guide portion interacting with the second guide portion, the first plane of the support portion cooperates with the movable part, the support portion supports the door body, and the second plane does not interact with the door body.

[0109] In the above technical solution, the first guide portion provided on the fixed part is located on the side of the second hinge axis away from the first hinge axis, and the fixed part and the movable part cooperate through the support portion surrounding the first hinge axis. When the first guide portion and the second guide portion of the gravity self-closing structure interact with each other, the gravity of the door is far away from the contact and matching force support position of the movable part and the fixed part (the matching position of the support portion and the movable part), and the torque generated by the gravity of the door is large, which is more conducive to the door body rising and falling under the action of its gravity, so that the torque generated by gravity is sufficient to make the door body close automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0110] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0111] Figure 1 is a schematic diagram of the overall structure of a refrigerator according to an exemplary embodiment;

[0112] Figure 2 1 is a schematic structural diagram of a hinge assembly area at the lower end of a door body of a refrigerator according to an exemplary embodiment;

[0113] Figure 3 is a structural schematic diagram of a gravity self-closing structure of a refrigerator according to an exemplary embodiment;

[0114] Figure 4 is a structural schematic diagram of a gravity self-closing structure of a refrigerator according to another exemplary embodiment from another perspective;

[0115] Figure 5 is a cross-sectional view of a gravity self-closing structure of a refrigerator according to an exemplary embodiment;

[0116] Figure 6 is a schematic diagram of an exploded structure of a gravity self-closing structure of a refrigerator according to an exemplary embodiment;

[0117] Figure 7 is a schematic diagram of an exploded structure of a gravity self-closing structure of a refrigerator according to another exemplary embodiment;

[0118] Figure 8 is a schematic diagram of the exploded structure of a fixing member, a backing plate, and a second hinge member of a refrigerator according to an exemplary embodiment;

[0119] Figure 9 is a schematic diagram of an exploded structure of a fixing member, a backing plate, and a second hinge member of a refrigerator from another perspective according to an exemplary embodiment;

[0120] Figure 10 is a schematic diagram of an assembly structure of a fixing member, a backing plate, and a second hinge member of a refrigerator according to an exemplary embodiment;

[0121] Figure 11 is a schematic diagram of an assembly structure of a fixing member, a backing plate, and a second hinge member of a refrigerator from another perspective according to an exemplary embodiment;

[0122] Figure 12 is a cross-sectional view of an assembly structure of a fixing member, a backing plate, and a second hinge member of a refrigerator according to an exemplary embodiment;

[0123] Figure 13 for Figure 12 Another perspective view of the sectional view;

[0124] Figure 14 is another cross-sectional view of the assembly structure of the fixing member, the backing plate, and the second hinge member of the refrigerator according to an exemplary embodiment;

[0125] Figure 15 for Figure 14 Another perspective view of the sectional view;

[0126] Figure 16 is another cross-sectional view of the assembly structure of the fixing member, the backing plate, and the second hinge member of the refrigerator according to an exemplary embodiment;

[0127] Figure 17 is a schematic diagram of the exploded structure of a height adjustment bolt and a limiting gasket of a refrigerator according to an exemplary embodiment;

[0128] Figure 18 is a schematic diagram of an exploded structure of a height adjustment bolt and a limiting gasket of a refrigerator according to an exemplary embodiment from another perspective;

[0129] Figure 19 is a schematic diagram showing the relative positions of a hinge plate, a first hinge shaft, a second hinge shaft, and a height adjustment bolt of a refrigerator according to an exemplary embodiment;

[0130] Figure 20 is a schematic diagram of the relative positions of a rolling member and a hinge plate of a refrigerator according to an exemplary embodiment;

[0131] Figure 21 is a schematic structural diagram of a hinge assembly region located at an upper end of a door body of a refrigerator according to an exemplary embodiment;

[0132] Figure 22 is a schematic diagram of the exploded structure of a hinge assembly located at the upper end of a door body of a refrigerator according to an exemplary embodiment;

[0133] Figure 23 is a schematic structural diagram of a second hinge member located at an upper end of a door body of a refrigerator according to an exemplary embodiment;

[0134] Figure 24 is a structural schematic diagram of a second hinge member located at an upper end of a door body of a refrigerator from another perspective according to an exemplary embodiment;

[0135] Figure 25 is a cross-sectional view of a second hinge member located at an upper end of a door body of a refrigerator according to an exemplary embodiment;

[0136] In the above figures:

[0137] Refrigerator 100; cabinet 1; door 3; door front wall 31; door rear wall 32; door side wall 33; first side edge W; second side edge N;

[0138] Hinge plate 4; first plate portion 41; second plate portion 42; mounting hole 421; annular protrusion 422; connecting plate 423;

[0139] The third plate portion 43; the first hinge hole 44; the second hinge hole 45; the adjustment hole 46;

[0140] First hinge axis 5; first guide column 50; second hinge axis 6; second guide column 60;

[0141] First track groove 7; first groove bottom 70; first groove wall 71; first notch 72;

[0142] Second track groove 8; second groove bottom 80; second groove wall 81; second groove opening 82; first groove section 83; second groove section 84; third groove section 85; plate 86;

[0143] Fixing member 200; fixing plate 210; first through hole 211; second through hole 212; first avoidance recess 213; first countersunk hole 214; second countersunk hole 215; first fixing hole 216; second fixing hole 217; second matching recess 218; first guide portion 220; first inclined surface 221; second inclined surface 222; first protrusion 223; support portion 230; fixed matching surface 240; first plane 250; second plane 260;

[0144] Movable member 300; movable plate 310; second guide portion 320; third inclined surface 321; fourth inclined surface 322; second protrusion 323; backing plate 400; first guide hole 401; second guide hole 402; first connecting hole 403; second connecting hole 404; first matching recess 405; limiting protrusion 406;

[0145] First fastener 91; first limiting portion 911; limiting retaining ring 912; second fastener 92; second limiting portion 921;

[0146] Height adjustment bolt 2; threaded section 21; top plate 22; mounting portion 23; adjustment portion 24; clamping portion 25;

[0147] Height limiting gasket 10; foot 11; rolling element 12; mounting block 13. DETAILED DESCRIPTION

[0148] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may also be beneficially combined in other embodiments.

[0149] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0150] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0151] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0152] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0153] The present application embodiment provides a refrigerator 100, referring to Figure 1-Figure 25 Refrigerator 100 includes a housing 1 having a storage cavity, a door 3 connected to housing 1 to open and close the storage cavity, and a refrigeration device that supplies cold air to the storage cavity. Housing 1 includes an inner container defining the storage cavity, an outer shell connected to the outer side of the inner container to form the appearance of refrigerator 100, and an insulating layer provided between the inner container and the outer shell to insulate the storage cavity.

[0154] Among them, see Figure 1 The direction from the bottom wall to the top wall of the box body 1 is the height direction. The direction in which the intersection line of the top wall and the rear wall of the box body 1 extends is the width direction.

[0155] In the embodiment of the present application, the box body 1 defines a plurality of accommodating cavities.

[0156] The front end of the storage chamber is formed with an access opening for placing and removing items. A user can place food into or remove food from the storage chamber through this access opening. A rotatable door 3 is provided on the refrigerator body 1 to open and close the access opening. For example, the door 3 is rotatably connected to the refrigerator body 1 by a hinge assembly located at the upper portion of the refrigerator 100 and a hinge assembly located at the lower portion of the refrigerator 100.

[0157] In some embodiments of the present application, the multiple accommodating chambers may include a refrigeration chamber and a freezer chamber.

[0158] In some embodiments of the present application, the refrigerating chamber and the freezing chamber are distributed along the width direction of the refrigerator 100. The refrigerating chamber extends along the height direction of the cabinet 1. The freezing chamber extends along the height direction of the cabinet 1.

[0159] In some embodiments of the present application, the refrigerator body 1 is provided with two doors 3. These doors 3 are a refrigerator door and a freezer door, respectively. The refrigerator door is used to open or close the refrigerator compartment, while the freezer door is used to open or close the freezer compartment. When both doors are closed, the front wall 31 of the refrigerator door and the front wall 31 of the freezer door together form the front wall of the refrigerator 100.

[0160] The above two accommodating cavities are arranged along the width direction of the refrigerator 100. The door body 3 corresponding to each accommodating cavity is large in volume and weight, and it is easy for the door body 3 to sink. When adjusting the height of the sunken door body 3, it is difficult to lift it up manually.

[0161] The box body 1 includes a first side wall (i.e., one of the left and right sides of the box body 1) and a second side wall (i.e., the other of the left and right sides of the box body 1) disposed opposite each other along its width. A hinge assembly is disposed on the box body 1 near the first side wall to connect a door body 3 near the first side wall to the box body 1, allowing the door body 3 to rotate relative to the box body 1 to open or close.

[0162] The door body 3 includes a front wall 31 that is spaced away from the housing 1 when the door body 3 is closed, a rear wall 32 that is disposed opposite the front wall 31, and a side wall 33 that is adjacent to the hinge assembly and connected to the front wall 31. For example, when the hinge assembly is located on the right side of the housing 1, the right side wall of the door body 3 serves as the side wall 33. When the hinge assembly is located on the left side of the housing 1, the left side wall of the door body 3 serves as the side wall 33.

[0163] In some embodiments of the present application, the door side wall 33 is connected to the door front wall 31 and is close to the rotation axis of the door body 3 .

[0164] The front wall 31 and the side wall 33 of the door body 3 intersect to form a first side edge W, and the side wall 33 and the rear wall 32 intersect to form a second side edge N. When the door body 3 is closed, the first side edge W is located on the side of the second side edge N away from the box body 1.

[0165] It should be noted that when both the front door wall 31 and the side door wall 33 are flat walls, the intersection line of the plane where the front door wall 31 is located and the plane where the side door wall 33 is located is the first side edge W. When the rounded transition is set at the intersection of the front door wall 31 and the side door wall 33, a first side edge W is formed along the height direction of the door body 3 (i.e. Figure 1 ). For ease of description, any straight line on this curved surface extending in the height direction of the door body 3 represents a first side edge W. Similarly, the intersection of the rear door wall 32 and the side door wall 33 is rounded, and the second side edge N can be represented by the intersection line of the planes on which the rear door wall 32 and the side door wall 33 lie, or by a straight line located close to and parallel to the intersection line.

[0166] In some embodiments of the present application, a door seal is provided on the rear wall of the door 3. The door seal surrounds the access opening. When the door 3 is closed, the door seal abuts against the front surface of the cabinet 1, effectively sealing the connection between the door 3 and the cabinet 1. This ensures that the door 3 seals the access opening and prevents cold air from escaping.

[0167] In some embodiments of the present application, the door body 3 is rotatably connected to the box body 1 through a hinge assembly located at the upper portion and a hinge assembly located at the lower portion.

[0168] In some embodiments of the present application, the hinge assembly includes a first hinge component and a second hinge component, and the first hinge component and the second hinge component cooperate with each other and can rotate relative to each other.

[0169] In some embodiments of this application, refer to Figures 2 to 7 The first hinge member includes a hinge plate 4. The hinge plate 4 includes a second plate portion 42 connected to the box body 1 and a first plate portion 41 extending forward from the second plate portion 42. The first plate portion 41 is parallel to the top wall of the box body 1. The second plate portion 42 can be fastened to the top wall of the box body 1 using fasteners such as screws, pins, and bolts.

[0170] Specifically, for the hinge at the upper end of the door body 3, the second plate portion 42 is connected to the top wall of the box body 1. For the hinge at the lower end of the door body 3, the second plate portion 42 is connected to the front end surface of the box body 1. The first hinge member includes a first hinge shaft 5 and a second hinge shaft 6 provided on the first plate portion 41. The second hinge shaft 6 is located on the side of the first hinge shaft 5 away from the side wall of the first body. The first hinge shaft 5 is perpendicular to the first plate portion 41. The second hinge shaft 6 is perpendicular to the first plate portion 41.

[0171] The second hinge member includes a guide portion and a guide portion located near the end of the door body 3 near the first hinge member. The first hinge shaft 5 is adapted to fit within the guide portion, while the second hinge shaft 6 is adapted to fit within the guide portion. When the door body 3 rotates to open or close, the first hinge shaft 5 moves relative to the guide portion, while the second hinge shaft 6 moves relative to the guide portion.

[0172] In some embodiments of the present application, the guide portion is located on a side of the guiding portion away from the first side edge.

[0173] In some embodiments of the present application, the first hinge shaft 5 moves relative to the door body 3 under the guidance of the guide portion, and the second hinge shaft 6 moves relative to the door body 3 under the guidance of the guide portion.

[0174] The first hinge shaft 5 and the second hinge shaft 6 of the first hinge member are connected to the housing 1 via the hinge plate 4 to form a defined axis for guiding the movement of the door 3. Specifically, the first hinge shaft 5 extends along the height direction of the housing 1 to fit the guide portion provided on the door 3. The second hinge shaft 6 extends along the height direction of the housing 1 to fit the guide portion provided on the door 3.

[0175] The guide portion has a guide track line. When the door body 3 is opened or closed, the central axis of the first hinge shaft 5 moves relative to the guide track line of the guide portion.

[0176] The guide portion has a guide track line. When the door body 3 is opened or closed, the central axis of the second hinge shaft 6 moves relative to the guide track line of the guide portion.

[0177] The guide track line is located on a side of the guide track line away from the first side edge W. The length of the guide track line is greater than the length of the guide track line.

[0178] In some embodiments of the present application, the guiding portion is configured as a first track groove 7 , and the guiding portion is configured as a second track groove 8 .

[0179] In some embodiments of the present application, the guide trajectory line is a curve; when the door body 3 is opened or closed, the first hinge shaft 5 makes a curved motion relative to the door body 3 under the guidance of the guide part, and the second hinge shaft 6 makes a curved motion relative to the door body 3 under the guidance of the guide part.

[0180] In some embodiments of the present application, the first track groove 7 is a curved groove, and the second track groove 8 is a curved groove. The first track groove 7 is located on a side of the second track groove 8 close to the first side edge W. The length of the first track groove 7 is less than that of the second track groove 8.

[0181] In some embodiments of the present application, the first track groove 7 includes a straight groove segment and a curved groove segment located on the side of the straight groove segment close to the door side wall 33. As the end of the door body 3 opposite the door side wall 33 points toward the door side wall 33, the distance between the curved groove segment and the door side wall 33 decreases. The curved groove segment protrudes toward the second side edge N.

[0182] In some embodiments of the present application, the straight groove section is parallel to the door front wall 31 .

[0183] It should be noted that the specific extension trends of the guiding portion and the guide portion are not limited to the above definition.

[0184] Corresponding to the position of the hinge plate 4, the upper and lower ends of the door body 3 are provided with a first track groove 7 and a second track groove 8. For example, the two first track grooves 7 at the upper and lower ends of the door body 3 correspond in position in the height direction of the refrigerator 100, and the two second track grooves 8 correspond in position in the height direction of the refrigerator 100, so that the movement of the upper and lower ends of the door body 3 is consistent, thereby making the door body 3 open or close more smoothly.

[0185] In this embodiment, continue to refer to Figure 2 The plane where the side wall of the box body 1 close to the hinge plate 4 (i.e., the first body side wall) is located is defined as the reference plane M0. When the refrigerator 100 is housed in a cabinet, the side of the reference plane M0 close to the cabinet is defined as the outer side, and the opposite side close to the accommodating cavity is defined as the inner side.

[0186] It is understandable that in order for the door body 3 of the refrigerator 100 to open normally, during the rotation of the door body 3, the first side edge W cannot exceed the reference plane M0 too much to avoid the first side edge W colliding with the cabinet and causing the door body 3 to fail to open normally.

[0187] In summary, if the door body 3 can move inward during rotation, the first side edge W will not extend significantly beyond the reference plane M0. For example, when the hinge plate 4 is located on the right side of the door body 3, the inner side is to the left of the reference plane M0, and the door body 3 needs to move to the left during rotation. When the hinge plate 4 is located on the left side of the door body 3, the inner side is to the right of the reference plane M0, and the door body 3 needs to move to the right during rotation.

[0188] Reference Figure 2 and Figure 7 In some embodiments, the refrigerator 100 further includes a gravity self-closing structure, which can be disposed at the lower end of the door body 3 .

[0189] In some embodiments of the present application, the gravity self-closing structure may include a matching fixed member 200 and a movable member 300. The fixed member 200 may be fixedly disposed on the box body 1, the movable member 300 may be fixedly disposed on the door body 3, and the movable member 300 and the fixed member 200 may be arranged along the height direction of the box body 1.

[0190] During the process of the door body 3 rotating from the open state to the closed state, the door body 3 can automatically move toward the box body 1 through the gravity self-closing structure, thereby realizing automatic closing of the door body 3, so that the door body 3 can abut against the box body 1 when in the closed state, reducing the gap between the door body 3 and the box body 1.

[0191] Reference Figure 6 The fixing member 200 includes a fixing plate 210. A first through hole 211 and a second through hole 212 are formed on the fixing plate 210. The first hinge axis 5 passes through the first through hole 211, and the second hinge axis 6 passes through the second through hole 212.

[0192] The fixed member 200 includes a first guide portion 220. The first guide portion 220 is located on the surface of the fixed plate 210 facing the movable member 300. The first guide portion 220 includes a first inclined surface 221 and a second inclined surface 222. The first end of the first inclined surface 221 is connected to the first portion of the fixed plate 210. The second end of the first inclined surface 221 is farther away from the fixed plate 210 than the first end of the first inclined surface 221.

[0193] The first end of the second inclined surface 222 is connected to the second portion of the fixing plate 210, and the second end of the second inclined surface 222 is connected to the second end of the first inclined surface 221. The second end of the second inclined surface 222 is farther away from the fixing plate 210 than the first end.

[0194] The second inclined surface 222 is located on a side of the first inclined surface 221 away from the box body 1 . A first end of the second inclined surface 222 is located on a side of the first end of the first inclined surface 221 away from the box body 1 .

[0195] The second end of the first inclined surface 221 is connected to the second end of the second inclined surface 222 and is located between the first end of the second inclined surface 222 and the first end of the first inclined surface 221 .

[0196] A first protrusion 223, which is at the greatest distance from the fixed plate 210, is formed at the junction of the second end of the first inclined surface 221 and the second end of the second inclined surface 222. In some embodiments of the present application, the first inclined surface 221 and the second inclined surface 222 are smoothly transitioned to facilitate smoother relative movement between the fixed member 200 and the movable member 300.

[0197] In some embodiments of the present application, the movable member 300 includes a movable plate 310 .

[0198] Reference Figure 7 The movable member 300 includes a second guide portion 320. The second guide portion 320 is located on the surface of the movable plate 310 facing the fixed member 200.

[0199] The second guide portion 320 includes a third inclined surface 321 and a fourth inclined surface 322. The first end of the third inclined surface 321 is connected to the first portion of the movable plate 310. The second end of the third inclined surface 321 is farther away from the movable plate 310 than the first end of the third inclined surface 321.

[0200] The first end of the fourth inclined surface 322 is connected to the second portion of the movable plate 310 , and the second end of the fourth inclined surface 322 is connected to the second end of the third inclined surface 321 . The second end of the fourth inclined surface 322 is farther away from the movable plate 310 than the first end of the fourth inclined surface 322 .

[0201] The fourth inclined surface 322 is located on a side of the third inclined surface 321 close to the door front wall 31 . A first end of the fourth inclined surface 322 is located on a side of the first end of the third inclined surface 321 close to the door front wall 31 .

[0202] The second end of the third inclined surface 321 is connected to the second end of the fourth inclined surface 322 , and is located between the first end of the third inclined surface 321 and the first end of the fourth inclined surface 322 .

[0203] A second protrusion 323, which is at the greatest distance from the movable plate 310, is formed at the junction of the second end of the third inclined surface 321 and the second end of the fourth inclined surface 322. In some embodiments of the present application, the third inclined surface 321 and the fourth inclined surface 322 are smoothly transitioned to each other to facilitate smoother relative movement between the fixed member 200 and the movable member 300.

[0204] In the above technical solution, the specific arrangement of the first guide portion and the second guide portion is defined, and the structure is simple and easy to form; the arrangement of the inclined surface makes the interaction between the first guide portion and the second guide portion smoother and more fluent.

[0205] When the door body 3 is closed from the open state, as the opening angle of the door body 3 gradually decreases, the second guide portion 320 gradually approaches the first guide portion 220. When the second guide portion 320 contacts the first guide portion 220, the third inclined surface 321 of the second guide portion 320 contacts the second inclined surface 222 of the first guide portion 220.

[0206] As the door 3 continues to close, the third inclined surface 321 of the second guide portion 320 engages with the second inclined surface 222 of the first guide portion 220. The third inclined surface 321 of the second guide portion 320 moves relative to the second inclined surface 222 of the first guide portion 220 toward the first inclined surface 221, and the second protrusion 323 gradually approaches the first protrusion 223. As the door 3 closes, the distance between the second inclined surface 222, which engages with the third inclined surface 321, and the fixed plate 210 gradually increases. The distance between the third inclined surface 321 and the movable plate 310 also gradually increases, increasing the distance between the fixed plate 210 and the movable plate 310. This gradually increases, driving the door 3, which is fixedly connected to the movable plate 310, to move away from the fixed plate 210 (upward). During this process, the door 3 moves upward, and the weight of the door 3 itself performs negative work, increasing the gravitational potential energy of the door 3.

[0207] When the second protrusion 323 of the second guide portion 320 matches the first protrusion 223 of the first guide portion 220 , the distance the second guide portion 320 moves away from the movable plate 310 reaches a maximum, and the height of the door body 3 moving upward reaches a maximum.

[0208] As the door 3 continues to close, the second protrusion 323 of the second guide portion 320 gradually moves away from the first protrusion 223 of the first guide portion 220. The fourth inclined surface 322 of the second guide portion 320 engages with the first inclined surface 221 of the first guide portion 220. Under the action of gravity on the door 3, the fourth inclined surface 322 of the second guide portion 320 moves away from the second inclined surface 222 relative to the first inclined surface 221 of the first guide portion 220. As the door 3 continues to close, the distance between the first inclined surface 221, which engages with the fourth inclined surface 322, and the fixed plate 210 gradually decreases. The distance between the fourth inclined surface 322 and the movable plate 310 also decreases, gradually reducing the distance between the fixed plate 210 and the movable plate 310. This gradually reduces the distance between the door 3 and the movable plate 310, driving the door 3 in a direction closer to the fixed plate 210 (downward). During this process, the gravitational potential energy of the door 3 decreases, which is converted into kinetic energy, causing the door 3 to automatically move downward, thus achieving automatic closing.

[0209] In the process that the second protrusion 323 of the second guide part 320 gradually moves away from the first protrusion 223 of the first guide part 220, the fourth inclined surface 322 and the first inclined surface 221 are caused to slide relative to each other under the action of the gravity of the door body 3, so that the door body 3 gradually approaches the box body 1, so that the door body 3 can be automatically closed under the action of its own gravity.

[0210] In some embodiments of the present application, the first track groove 7 and the second track groove 8 at the lower end of the door body 3 are formed on the movable plate 310. The second guide portion 320 is located on a side of the second track groove 8 away from the first track groove 7.

[0211] In some embodiments of the present application, in the projection of the surface of the movable plate 310 close to the fixed plate 210, the extension trend of the second guide portion 320 from the first end of the third inclined surface 321 through the two ends of the third inclined surface 321 (the second end of the fourth inclined surface 322) to the first end of the fourth inclined surface 322 is consistent with the extension trend of the second track groove 8 close to the second guide portion 320.

[0212] During the closing or opening process of the door body 3, the first hinge shaft 5 moves relative to the first track groove 7, and the second hinge shaft 6 moves relative to the second track groove 8. The above configuration of the present application ensures that during the interaction between the second guide portion 320 and the first guide portion 220, the movement trend of the second guide portion 320 relative to the first guide portion 220 is synchronized with the movement trend of the second hinge shaft 6 relative to the second track groove 8, so as to form an organic unity with the movement of the first hinge shaft 5 relative to the first track groove 7 during this process, so that during the above process of the gravity self-closing structure, the door body rotates to open and has a displacement along the width direction of the box body 1 while ensuring that the gravity self-closing structure effectively functions.

[0213] Reference Figure 2-Figure 16 In some embodiments of the present application, the refrigerator includes a height adjustment component for adjusting the height of the door 3 relative to the box body 1.

[0214] In some embodiments of the present application, the height adjustment assembly includes a backing plate 400, which is disposed between the hinge plate 4 and the fixing plate 210. The backing plate 400 may be made of a metal with a relatively high hardness, such as steel.

[0215] In some embodiments of the present application, the side of the fixed plate 210 away from the movable plate 310 cooperates with the backing plate 400. The side of the backing plate 400 away from the fixed plate 210 cooperates with the hinge plate 4.

[0216] In some embodiments of the present application, the backing plate 400 is provided with a first guide hole 401 and a second guide hole 402. The first through hole 211 and the first guide hole 401 are positioned correspondingly, and the second through hole 212 and the second guide hole 402 are positioned correspondingly.

[0217] The first hinge shaft 5 passes through the first guide hole 401 and the first through hole 211. The second hinge shaft 6 passes through the second guide hole 402 and the second through hole 212. The backing plate 400 and the fixing member 200 are fitted onto the first hinge shaft 5 and the second hinge shaft 6.

[0218] In some embodiments of the present application, the height adjustment assembly includes a first guide post 50, which is disposed at the end of the first hinge shaft 5 near the hinge plate 4. The first guide post 50 surrounds the end of the first hinge shaft 5 near the hinge plate 4. The first guide post 50 is installed in the first guide hole 401 of the backing plate 400 to guide the backing plate 400 along the central axis of the first hinge shaft 5. The outer diameter of the first guide post 50 is larger than the diameter of the first hinge shaft 5 to reduce relative friction between the backing plate 400 and the first hinge shaft 5.

[0219] In some embodiments of the present application, the first guide post 50 contacts and cooperates with the wall of the first guide hole 401. The above arrangement improves the guiding accuracy of the first guide post 50 in guiding the pad 400 along the central axis of the first hinge shaft 5.

[0220] Reference Figure 8 、 Figure 14 、 Figure 15 、 Figure 16 The height adjustment assembly includes a second guide post 60, which is located at the end of the second hinge shaft 6 near the hinge plate 4. The second guide post 60 surrounds the end of the second hinge shaft 6 near the hinge plate 4. The second guide post 60 is installed in the second guide hole 402 of the backing plate 400 to guide the backing plate 400 along the central axis of the second hinge shaft 6 (first hinge shaft 5). The outer diameter of the second guide post 60 is larger than the diameter of the second hinge shaft 6 to reduce relative friction between the backing plate 400 and the second hinge shaft 6.

[0221] In some embodiments of the present application, the second guide post 60 contacts and cooperates with the wall of the second guide hole 402. The above arrangement improves the guiding accuracy of the second guide post 60 for the pad 400 to move along the central axis of the second hinge axis 6 (first hinge axis 5).

[0222] In some embodiments of the present application, the first guide post 50 is integrally formed with the first hinge shaft 5. This arrangement ensures the integrity of the first guide post 50 and the first hinge shaft 5, thereby increasing their overall strength. The second guide post 60 is integrally formed with the second hinge shaft 6. This arrangement ensures the integrity of the second guide post 60 and the second hinge shaft 6, thereby increasing their overall strength.

[0223] When adjusting the height of the door body 3 , the height of the door body 3 is adjusted by adjusting the height of the backing plate 400 and the fixing member 200 relative to the hinge plate 4 .

[0224] Among them, reference Figure 15The distance between the end face of the first guide column 50 away from the hinge plate 4 and the hinge plate 4 is recorded as H1, the distance between the end face of the second guide column 60 away from the hinge plate 4 and the hinge plate 4 is recorded as H2, and the thickness of the pad 400 (the dimension in the normal direction of the mating surface of the pad 400 and the hinge plate 4) is recorded as W D .

[0225] In some embodiments of the present application, W D Not greater than H1. When W D When it is greater than H1, when the pad 400 moves along the central axis of the first hinge shaft 5 toward the direction away from the hinge plate 4, as the moving distance increases, the contact size between the pad 400 and the first guide column 50 is too small, and the guiding effect of the first guide column 50 on the pad 400 along the central axis of the first hinge shaft 5 is too poor, and the stability of the pad 400 moving relative to the first hinge shaft 5 toward the side away from the hinge plate 4 is poor.

[0226] When W D When it is not greater than H1, when the pad 400 moves along the central axis of the first hinge shaft 5 toward the direction away from the hinge plate 4, as the moving distance increases, although the contact size between the pad 400 and the first guide column 50 decreases, within the limited relative moving distance range (the height adjustment distance of the door body 3), the contact size between the pad 400 and the first guide column 50 can effectively ensure the guiding effect of the first guide column 50 on the pad 400 along the central axis of the first hinge shaft 5, so as to ensure the stability of the pad 400 moving relative to the first hinge shaft 5 toward the side away from the hinge plate 4.

[0227] In some embodiments of the present application, W D Not greater than H2.

[0228] When W D When it is greater than H2, when the pad 400 moves along the central axis of the second hinge shaft 6 (first hinge shaft 5) toward the direction away from the hinge plate 4, as the moving distance increases, the contact size between the pad 400 and the second guide column 60 is too small, and the guiding effect of the second guide column 60 on the pad 400 along the central axis of the second hinge shaft 6 (first hinge shaft 5) is too poor, and the pad 400 has poor stability when moving relative to the second hinge shaft 6 (first hinge shaft 5) toward the side away from the hinge plate 4.

[0229] When W DWhen it is not greater than H2, when the pad 400 moves along the central axis of the second hinge shaft 6 (first hinge shaft 5) toward the direction away from the hinge plate 4, as the moving distance increases, although the contact size between the pad 400 and the second guide column 60 decreases, within the limited relative moving distance range (the height adjustment distance of the door body 3), the contact size between the pad 400 and the second guide column 60 can effectively ensure the guiding effect of the second guide column 60 on the pad 400 along the central axis of the second hinge shaft 6 (first hinge shaft 5), so as to ensure the stability of the pad 400 moving relative to the second hinge shaft 6 (first hinge shaft 5) toward the side away from the hinge plate 4.

[0230] The above arrangement enables the first guide post 50 and the second guide post 60 to maintain stability in guiding the movement of the backing plate 400 away from the hinge plate 4 , so that the backing plate 400 can move stably and non-tiltingly toward the side away from the hinge plate 4 .

[0231] In some embodiments of the present application, H1 = H2. The distance H1 between the end surface of the first guide post 50 away from the hinge plate 4 and the hinge plate 4 is equal to the distance H2 between the end surface of the second guide post 60 away from the hinge plate 4 and the hinge plate 4. The mating lengths of the first guide post 50 and the second guide post 60 relative to the backing plate 400 are equal, making the guiding effect of the first guide post 50 and the second guide post 60 on the backing plate 400 more balanced.

[0232] In some embodiments of the present application, 4mm≤H1≤7mm. The above setting of 4mm≤H1≤7mm satisfies the contact dimension requirement between the first guide post 50 and the backing plate 400 when the door body 3 is raised, effectively ensuring that the first guide post 50 guides the backing plate 400 along the central axis of the first hinge shaft 5, thereby ensuring the stability of the backing plate 400 when moving relative to the first hinge shaft 5 away from the hinge plate 4.

[0233] H1 is less than 4mm. When the door body 3 is raised to move the pad 400 along the central axis of the first hinge shaft 5 away from the hinge plate 4, as the moving distance increases, the contact size between the pad 400 and the first guide column 50 is too small, and the guiding effect of the first guide column 50 on the pad 400 along the central axis of the first hinge shaft 5 is too poor. The pad 400 has poor stability when moving relative to the first hinge shaft 5 toward the side away from the hinge plate 4.

[0234] H1>7mm, H1 is too large, resulting in the first guide column 50 provided at the end of the first hinge shaft 5 having a too large length along its central axis, resulting in an increase in the thickness of the fixing part 200, reducing the matching length between the first hinge shaft 5 and the first track groove 7, and the first hinge shaft 5 is easily detached from the first track groove 7.

[0235] In some embodiments of the present application, 4mm≤H2≤7mm.

[0236] The above setting of 4mm≤H2≤7mm meets the contact size requirements of the second guide column 60 to the pad 400 when the door body 3 is raised, effectively ensuring the guiding effect of the second guide column 60 on the pad 400 along the central axis direction of the second hinge shaft 6, so as to ensure the stability of the pad 400 moving relative to the second hinge shaft 6 toward the side away from the hinge plate 4.

[0237] H2 is less than 4mm, H2 is too small. When the door body 3 is raised to make the pad 400 move along the central axis of the second hinge shaft 6 in the direction away from the hinge plate 4, as the moving distance increases, the contact size between the pad 400 and the second guide column 60 is too small. The guiding effect of the second guide column 60 on the pad 400 along the central axis of the second hinge shaft 6 is too poor, and the stability of the pad 400 moving relative to the second guide column 60 toward the side away from the hinge plate 4 is poor.

[0238] H2>7mm, H2 is too large, resulting in the second guide column 60 provided at the end of the second hinge shaft 6 being too long along its central axis, resulting in the thickness of the fixing part 200 being increased, reducing the matching length between the second hinge shaft 6 and the second track groove 8, and the second hinge shaft 6 is easily detached from the second track groove 8.

[0239] In some embodiments of the present application, a first avoidance recess 213 is formed on a side of the fixing plate 210 close to the pad 400 .

[0240] Reference Figure 9 In the plane projection on the fixing plate 210 that matches the pad 400 (in the plane projection perpendicular to the central axis of the first hinge axis 5), the projection of the first hinge axis 5 and the projection of the second hinge axis 6 are both completely located within the projection of the first avoidance recess 213.

[0241] In some embodiments of the present application, after the fixing plate 210 is mounted on the first hinge shaft 5 and the second hinge shaft 6, the bottom wall of the first avoidance recess 213, which is opposite the backing plate 400, mates with the end surface of the first guide post 50 away from the hinge plate 4 and / or the end surface of the second guide post 60 away from the hinge plate 4. This arrangement enables the first guide post 50 and / or the second guide post 60 to support the end surface of the fixing plate 50 away from the hinge plate 4 with respect to the fixing member 200, thereby increasing the overall support strength of the fixing member 200 on the door body 3.

[0242] In some embodiments of the present application, after the fixing plate 210 is mounted on the first hinge shaft 5 and the second hinge shaft 6, there is a gap between the bottom wall of the first avoidance recess 213 opposite to the pad 400 and the end face of the first guide column 50 away from the hinge plate 4 and / or the end face of the second guide column 60 away from the hinge plate 4.

[0243] Reference Figures 8-13In some embodiments of the present application, the fixing plate 210 is provided with a first fixing hole 216 . The backing plate 400 is provided with a first connecting hole 403 . The first connecting hole 403 corresponds to the first fixing hole 216 .

[0244] The refrigerator 100 includes a first fastener 91. The first fastener 91 is installed in the first fixing hole 216 and the first connecting hole 403 to fix the fixing plate 210 and the backing plate 400.

[0245] In some embodiments of the present application, the first fastener 91 passes through the first fixing hole 216 and is fixedly connected to the first connecting hole 403. The above arrangement of the first fastener 91 being fixedly connected only to the first connecting hole 43 reduces the length of the connection and fixing between the first fastener 91 and other components, facilitating installation.

[0246] In some embodiments of the present application, the first fastener 91 is threadedly connected to the first connecting hole 403 .

[0247] In some embodiments of the present application, a first countersunk hole 214 is formed at one end of the first fixing hole 216 near the movable plate 310. The inner diameter of the first countersunk hole 214 is larger than the inner diameter of the first through hole 211. The first fastener 91 includes a first stopper 911 that is completely received within the first countersunk hole 214, so that the end of the first fastener 91 near the movable plate 310 does not protrude outside the movable plate 310.

[0248] In some embodiments of the present application, the hinge plate 4 is provided with a first hinge hole 44. The first hinge hole 44 corresponds to the position of the first connection hole 403. That is, when the backing plate 400 is mounted on the hinge plate 4 and the fixing plate 210 is mounted on the side of the backing plate 400 away from the hinge plate 4, the positions of the first fixing hole 216, the first connection hole 403, and the first hinge hole 44 correspond.

[0249] The end of the first fastener 91 on the side of the backing plate 400 away from the fixed plate 210 passes through the first hinge hole 44. The end of the first fastener 91 passing through the first hinge hole 44 and located on the side of the hinge plate 4 away from the fixed plate 210 is riveted to form a retaining ring 912. The outer diameter of the retaining ring 912 is larger than the inner diameter of the first hinge hole 44, ensuring that the retaining ring 912 is always located on the side of the hinge plate 4 away from the movable plate 310, preventing the first fastener 91 from detaching from the hinge plate 4.

[0250] During product manufacturing, the hinge plate 4, backing plate 400, and movable plate 310 are transported as a single assembly, which is then directly connected to the housing 1 for assembly. In the above embodiment, the first fasteners 91 securely connect the movable plate 310 to the backing plate 400, ensuring the effective connection length between the second fasteners 92 and the backing plate 400, thereby ensuring the connection strength between the fixed plate 210 and the backing plate 400. Furthermore, the integral connection of the fixedly connected movable plate 310 and backing plate 400 to the hinge plate 4 prevents the fixedly connected movable plate 310 and backing plate 400 from becoming dislodged from the hinge plate 4 during transportation, potentially leading to component separation.

[0251] In some embodiments of the present application, the diameter of the first hinge hole 44 is larger than the outer diameter of the end of the first fastener 91 located on the side of the backing plate 400 away from the fixed plate 210. That is, a radial gap exists between the hole wall of the first hinge hole 44 and the first fastener 91. This arrangement enables the fixed plate 210 and the backing plate 400, connected by the first fastener 91, to move relative to the hinge plate 4 along the central axis of the first hinge hole 44, thereby adjusting the position of the fixed plate 210 and the backing plate 400 away from the hinge plate 4, and ultimately adjusting the height of the door body 3.

[0252] Reference Figure 12 The sum of the thicknesses of the fixing plate 210 , the backing plate 400 , and the hinge plate 4 surrounding the first fastener 91 is denoted as h, and the length of the first fastener 91 is denoted as L. L is the distance between the first limiting portion 911 and the limiting retaining ring 912 .

[0253] The above arrangement prevents the fixing plate 210 and the backing plate 400 from falling off the hinge plate 4 , and also ensures that the connected fixing plate 210 and the backing plate 400 can move a certain distance relative to the hinge plate 4 along the axis of the first fastener 91 .

[0254] In some embodiments of the present application, the difference Lh between L and h is not less than the maximum height adjustment of the door body 3. When Lh is less than the maximum height adjustment of the door body 3, the door body 3 cannot be adjusted to the maximum height adjustment, and its actual maximum height adjustment is limited.

[0255] When Lh is not less than the maximum height adjustment amount of the door body 3, on the one hand, it ensures that the fixing plate 210 and the pad 400 as a whole do not fall off the hinge plate 4; on the other hand, it does not affect the maximum height adjustment amount of the door body 3 by raising the pad 400, so that the actual height adjustment requirements can be met when adjusting the height.

[0256] The fixing plate 210 is provided with a second fixing hole 217 . The backing plate 400 is provided with a second connecting hole 404 . The second connecting hole 404 corresponds to the second fixing hole 217 .

[0257] The refrigerator 100 includes a second fastener 92 . The second fastener 92 is installed in the second fixing hole 217 and the second connecting hole 404 to fix the fixing plate 210 and the backing plate 400 together.

[0258] In some embodiments of the present application, the second fastener 92 passes through the second fixing hole 217 and is fixedly connected to the second connecting hole 404. The second fastener 92 is fixedly connected only to the second connecting hole 404, which reduces the connection and fixing length of the second fastener 92 with other components and facilitates installation.

[0259] In some embodiments of the present application, the second fastener 92 is threadedly connected to the first connecting hole 403 .

[0260] In some embodiments of the present application, a second countersunk hole 215 is formed at one end of the second fixing hole 217 near the movable plate 310. The inner diameter of the second countersunk hole 215 is larger than the inner diameter of the second through hole 212. The second fastener 92 includes a second stopper 921 that is completely received within the second countersunk hole 215, so that the end of the second fastener 92 near the movable plate 310 does not protrude outside the movable plate 310.

[0261] In some embodiments of the present application, the hinge plate 4 is provided with a second hinge hole 45. The second hinge hole 45 corresponds to the position of the first connection hole 403. That is, when the backing plate 400 is mounted on the hinge plate 4 and the fixing plate 210 is mounted on the side of the backing plate 400 away from the hinge plate 4, the positions of the second fixing hole 217, the second connection hole 404, and the second hinge hole 45 correspond.

[0262] The end portion of the second fastener 92 located on the side of the backing plate 400 away from the fixing plate 210 is located in the second hinge hole 45 .

[0263] In some embodiments of the present application, the diameter of the second hinge hole 45 is larger than the outer diameter of the end of the second fastener 92 located on the side of the backing plate 400 away from the fixed plate 210. That is, a radial gap exists between the wall of the second hinge hole 45 and the second fastener 92. The second hinge hole 45 is provided on the hinge plate 4 to allow the second fastener 92 to be avoided when the second fastener 92 is used to connect the fixed plate 210 and the backing plate 400, ensuring the effective connection length between the second fastener 92 and the backing plate 400, thereby ensuring the connection strength between the fixed plate 210 and the backing plate 400. Furthermore, this arrangement enables the fixed plate 210 and the gasket connected by the second fastener 92 to move relative to the hinge plate 4 along the central axis of the second hinge hole 45, thereby adjusting the position of the fixed plate 210 and the backing plate 400 away from the hinge plate 4, ultimately achieving adjustment of the height of the door body 3.

[0264] In some embodiments of the present application, in the projection of the plane in which the hinge plate 4 lies (in the projection of the plane perpendicular to the central axis of the first hinge axis 5), the first guide post 50 is located on the side of the second guide post 60 that is close to the first body side wall and the rear wall of the box body 1. The first fastener 91 is located on the side of the first hinge axis 5 that is close to the first body side wall and close to the rear wall of the box body 1. The second fastener 92 is located on the side of the second hinge axis 6 that is away from the first body side wall and close to the rear wall of the box body 1. The second fastener 92 and the first fastener 91 are both located on the side of the first hinge axis 5 and the second hinge axis 6 that is close to the rear wall of the box body 1.

[0265] When the fixed plate 210 and the backing plate 400, which are fixedly connected, move away from the hinge plate 4, the first fastener 91 moves along the first hinge hole 44, the second fastener 92 moves along the second hinge hole 45, the first through hole 211 and the first guide hole 401 move relative to the first hinge axis 5, and the second through hole 212 and the second guide hole 402 move relative to the second hinge axis 6. The first guide post 50 and the second guide post 60 play a primary guiding role, while the second fastener 92 and the first fastener 91 play an auxiliary guiding role. The second fastener 92, the first fastener 91, the first guide column 50, and the second guide column 60 jointly guide the fixedly connected fixing plate 210 and the pad 400 so that the fixedly connected fixing plate 210 and the pad 400 can move in a direction perpendicular to the hinge plate 4 (the direction of the central axis of the first hinge shaft 5) to avoid displacement such as offset or tilt, so that the pad 400 in the adjusted fixedly connected fixing plate 210 and the pad 400 remains parallel to the hinge plate 4, so that the adjusted position of the door body 3 does not deviate or tilt, reducing the unbalanced stress of the interaction between the fixed part 200 and the movable part 300 of the gravity self-closing structure, ensuring the effective life of the gravity self-closing structure and the effectiveness of the gravity self-closing structure in promoting the automatic closing of the door body 3 under its own gravity.

[0266] In some embodiments of the present application, the height adjustment assembly includes a height adjustment bolt 2, which passes through the hinge plate 4 and can move relative to the hinge plate 4 along the central axis of the height adjustment bolt 2. The height adjustment bolt 2 is located on the side of the backing plate 400 away from the fixed plate.

[0267] In some embodiments of the present application, the hinge plate 4 is provided with an adjustment hole 46. The height adjustment bolt 2 is installed in the adjustment hole 46. By adjusting the position of the height adjustment bolt 2 in the adjustment hole 46, the length of the height adjustment bolt 2 on the side of the hinge plate 4 near the backing plate 400 is controlled, thereby adjusting the distance between the backing plate 400 and the fixed member 200 and the hinge plate 4. Ultimately, the height of the door body 3 is adjusted through the interaction between the fixed member 200 and the door body 3.

[0268] In some embodiments of this application, refer to Figure 12-13 and Figure 17-18The height adjustment bolt 2 includes a threaded section 21. The end of the threaded section 21, located near the backing plate 400, has a top plate 22 for mating with the backing plate 400. The top plate 22 is provided with a mounting portion 23 for engaging a tool such as a screwdriver to install the height adjustment bolt 2. As a possible configuration, the mounting portion 23 is configured as a cross-shaped recessed portion to engage a Phillips screwdriver, etc., to install the height adjustment bolt 2 in the adjustment hole 46.

[0269] In some embodiments of the present application, an adjustment portion 24 is provided at one end of the threaded section 21 away from the top plate 22. The adjustment portion 24 is located on the side of the hinge plate 4 away from the backing plate 400. By rotating the adjustment portion 24, the height adjustment bolt 2 rotates relative to the adjustment hole 46, thereby moving the height adjustment bolt 2 relative to the hinge plate 4, thereby adjusting the length of the height adjustment bolt 2 on the side of the hinge plate 4 closer to the backing plate 400. This, in turn, adjusts the distance between the backing plate 400 and the fixed member 200, which are fixedly connected, and the hinge plate 4. Ultimately, the height of the door body 3 is adjusted through the interaction between the fixed member 200 and the door body 3.

[0270] In some embodiments of the present application, the length of the threaded section 21 of the height adjustment bolt 2 is not less than the sum of the maximum height adjustment amount and the depth of the second hinge hole 45. This arrangement allows the adjustment portion 24 to remain on the side of the hinge plate 4 away from the backing plate 400 during overall height adjustment, making it convenient for the user to use a tool such as a wrench to apply force to the adjustment portion 24 to rotate the height adjustment bolt 2 to adjust the height of the door body 3.

[0271] In some embodiments of the present application, the adjustment portion 24 is configured as a prism to facilitate its use with a commonly used wrench. Alternatively, the adjustment portion 24 may be configured to have a hexagonal cross-section perpendicular to the central axis of the threaded segment 21. In other words, the adjustment portion 24 is configured as a hexagonal prism.

[0272] In some embodiments of the present application, a clamping portion 25 is provided between the adjusting portion 24 and the threaded section 21 , and a height-limited gasket 10 is installed in the clamping portion 25 .

[0273] In some embodiments of the present application, the distance between the edge of the height-limiting gasket 10 away from the central axis of the height-adjusting bolt 2 and the central axis of the height-adjusting bolt 2 is greater than the inner diameter of the adjustment hole 46, so that the height-limiting gasket 10 is always located on the side of the hinge plate 4 away from the backing plate 400. On the one hand, the above arrangement prevents the height-limiting gasket 10 from passing through the adjustment hole 46, and the height-limiting gasket 10 is restricted to the side of the hinge plate 4 away from the backing plate 400. It can limit the length of the height-adjusting bolt 2 on the side of the hinge plate 4 close to the backing plate 400, thereby limiting the maximum height adjustment amount and avoiding over-adjustment. On the other hand, it can limit the adjustment portion 24 to always be located on the side of the hinge plate 4 away from the backing plate 400, so that the user can use a tool such as a wrench to act on the adjustment portion 24 to rotate the height-adjusting bolt 2 to adjust the height of the door body 3.

[0274] In some embodiments of the present application, the clamping portion 25 is configured as a clamping groove, which is an annular groove surrounding the central axis of the threaded section 21. The height limiting gasket 10 is installed in the clamping groove.

[0275] In some embodiments of the present application, the height limiting gasket 10 is a C-shaped gasket. The C-shaped height limiting gasket 10 is installed in the clamping portion 25 through its opening.

[0276] In some embodiments of the present application, a first mating recess 405 is provided on the backing plate 400 near the hinge plate 4. The height adjustment bolt 2 is positioned correspondingly to the first mating recess 405. The top plate 22 of the height adjustment bolt 2 mates with the first mating recess 405. This arrangement defines the relative position of the height adjustment bolt 2 and the backing plate 400 within a plane perpendicular to the central axis of the height adjustment bolt 2, ensuring that the force exerted by the height adjustment bolt 2 on the backing plate 400 remains consistent along the central axis of the height adjustment bolt 2.

[0277] In some embodiments of the present application, the first mating recess 405 includes a bottom wall disposed opposite the hinge plate 4 and a circumferential side wall surrounding the bottom wall. The bottom wall of the first mating recess 405 mates with the surface of the top plate 22 away from the hinge plate 4. The circumferential side wall of the first mating recess 405 mates with the side wall of the top plate 22.

[0278] In some embodiments of the present application, one end of the first matching recess 405 away from the hinge plate 4 is raised toward a side away from the hinge plate 4 to form a limiting protrusion 406 .

[0279] In some embodiments of the present application, a second mating recess 218 is provided on the side of the fixing plate 210 proximal to the hinge plate 4. The second mating recess 218 corresponds to the position of the limiting protrusion 406, and the limiting protrusion 406 is at least partially received in the second mating recess 218. This arrangement further defines the relative position of the fixing plate 210 and the backing plate 400 within a plane perpendicular to the central axis of the height adjustment bolt 2, thereby enhancing the overall connectivity between the fixing plate 210 and the backing plate 400.

[0280] In some embodiments of the present application, the circumferential side wall of the limiting protrusion 406 cooperates with the circumferential inner side wall of the second matching recess 218 .

[0281] In some embodiments of the present application, the top wall of the limiting protrusion 406 cooperates with the bottom wall of the second matching recess 218. The above configuration increases the support area of the pad 400 on the fixing plate 210, thereby enhancing the support strength of the fixing member 200 on the door body 3.

[0282] In some embodiments of the present application, the distance between the bottom wall of the first mating recess 405 and the end surface of the opening of the first mating recess 405 is equal to the height of the limiting protrusion 406 along the central axis of the height adjustment bolt 2. The above arrangement can ensure the thickness and strength of the backing plate 400 at the first mating recess 405.

[0283] In some embodiments of this application, refer to Figure 19 In the plane projection perpendicular to the central axis of the height adjustment bolt 2, the projection of the central axis of the height adjustment bolt 2 is denoted as the height adjustment bolt projection point T, the projection of the central axis of the first guide post 50 is denoted as the first guide post projection point J1, and the projection of the central axis of the second guide post 60 is denoted as the second guide post projection point J2. The height adjustment bolt projection point T, the first guide post projection point J1, and the second guide post projection point J2 are not collinear.

[0284] That is, the projection point T of the height-adjusting bolt, the projection point J1 of the first guide column, and the projection point J2 of the second guide column are sequentially connected to form a triangle TJ1J2.

[0285] That is, the height-adjusting bolt 2 , the first guide post 50 , and the second guide post 60 are distributed in a triangle.

[0286] The above arrangement, through the surface contact support between the top plate 22 of the height adjustment bolt 2 and the pad 400, and under the guiding action of the first guide column 50 and the second guide column 60 on the pad 400, effectively limits the two-dimensional planar movement of the pad 400 and the like in a plane perpendicular to the central axis of the height adjustment bolt 2, so that it can only move along the central axis of the height adjustment bolt 2. In addition, through the surface contact support between the top plate 22 of the height adjustment bolt 2 and the pad 400, in conjunction with the guidance of the pad 400 by the first guide column 50 and the second guide column 60, the pad 400 can move smoothly and without tilting along the central axis of the height adjustment bolt 2, and can avoid the pad 400 from becoming stuck during movement due to the interaction with the first guide column 50 and / or the second guide column 60, resulting in a failure in height adjustment, thereby preventing the adjusted pad 400 (fixed plate 210) from tilting, which in turn causes the adjusted door body 3 to tilt, resulting in excessive stress when interacting with the gravity self-closing structure of the door body 3.

[0287] In some embodiments of the present application, the height adjustment bolt projection point T is located on the side of the first guide column projection point J1 away from the side wall of the first body and close to the plane where the pick-up and release port is located, and the height adjustment bolt projection point T is located on the side of the second guide column projection point J2 close to the side wall of the first body and the plane where the pick-up and release port is located.

[0288] The above setting limits the relative positions of the height-adjusting bolt 2, the first guide column 50 and the second guide column 60, so that along the width direction of the box body 1, the height-adjusting bolt 2 is located between the first guide column 50 and the second guide column 20, so that the surface support effect of the height-adjusting bolt 2, the guiding effect of the first guide column 50, and the guiding effect of the second guide column 60 are more balanced, so that the height of the door body 3 can be adjusted in a balanced manner without tilting.

[0289] Among them, in the triangle TJ1J2, along the width direction of the box body 1, the distance between the height adjustment bolt projection point T and the first guide column projection point J1 is recorded as |TJ1|`, and the distance between the height adjustment bolt projection point T and the second guide column projection point J2 is recorded as |TJ2|`; among them, |TJ2|`<|TJ1|`.

[0290] In some embodiments of the present application, 2≤|TJ1|`:|TJ2|`≤4.

[0291] When |TJ1|`:|TJ2|`>4, |TJ1|`:|TJ2|` is too large, and the height adjustment bolt 2 is too close to the second guide column 60 relative to the first guide column 50, resulting in a large distance between the height adjustment bolt 2 and the first guide column 50. A small amount of inclination of the pad 400 will cause the pad 400 to be stuck by the first guide column 50, which will increase the inclination of the pad 400, resulting in a large inclination of the door body 3 after being raised.

[0292] When |TJ1|`:|TJ2|` is less than 2, |TJ1|`:|TJ2|` is too small, and the height adjustment bolt 2 is too close to the first guide column 50 relative to the second guide column 60, resulting in a large distance between the height adjustment bolt 2 and the second guide column 60. A small amount of inclination of the pad 400 will cause the pad 400 to be stuck by the second guide column 60, thereby increasing the inclination of the pad 400, resulting in a large inclination of the door body 3 after being raised.

[0293] The setting of 2≤|TJ1|`:|TJ2|`≤4 makes the height-adjusting bolt 2 moderately biased toward the second guide column 60 relative to the first guide column 50, so that the supporting force of the height-adjusting bolt 2 on the pad 400, etc. is more balanced, so as to adjust the height of the pad 400, etc. smoothly and without tilting, and thus the height of the door body 3 can be adjusted in a balanced and non-tilted manner.

[0294] In some embodiments of the present application, in triangle TJ1J2, a line passing through the projection point T of the height adjustment bolt and perpendicular to side J1J2 intersects J1J2 at Z. Z is the foot of the perpendicular, and TZ is the height of triangle TJ1J2, its length denoted as |TZ|. The length of side TJ1 of triangle TJ1J2 is denoted as |TJ1|, the length of side TJ2 is denoted as |TJ2|, and the length of J1J2 is denoted as |J1J2|.

[0295] Among them, 0.8≤|TZ|:|J1J2|≤1.1.

[0296] Above|T Z |:|J1J2|>1.1,|T Z |:|J1J2| is too large, the distance between T and J1J2 is too large, and a small inclination of the pad 400 will cause the pad 400 to be stuck by the first guide column 50 and / or the second guide column 60, thereby increasing the inclination of the pad 400 and causing the door body 3 to be tilted more after being raised.

[0297] |T Z |:|J1J2|<0.8, |TZ|:|J1J2| is too small, the distance between T and J1J2 is too small, the guiding surface of the height adjustment bolt 2, the first guide column 50, and the second guide column 60 on the pad 400, etc. is small, and the pad 400, etc. cannot be supported more effectively, which may easily cause the pad 400, etc. to tilt as a whole, causing the pad 400 to be directly stuck by the first guide column 50 and / or the second guide column 60, resulting in a large inclination of the door body 3 after being raised.

[0298] The setting of 0.8≤|TZ|:|J1J2|≤1.1 makes the distance between the height-adjusting bolt 2 and the first guide column 50 and the second guide column 60 moderate, so that the height-adjusting bolt 2 cooperates with the first guide column 50 and the second guide column 60 to meet the supporting requirements of the guiding surface of the pad 400, etc., so that the supporting force on the pad 400, etc. is more balanced, and the height of the pad 400, etc. can be adjusted smoothly and without tilting, thereby ensuring that the adjusted door body 3 is in a non-tilted state.

[0299] In some embodiments of the present application, 0.9≤|J1Z|:|J2Z|≤1.2.

[0300] In the above, |J1Z|:|J2Z|>1.2, |J1Z|:|J2Z| is too large, and the height adjustment bolt 2 is too close to the second guide column 60 relative to the first guide column 50, resulting in a large distance between the height adjustment bolt 2 and the first guide column 50. A small amount of inclination of the pad 400 will cause the pad 400 to be stuck by the first guide column 50, which will further increase the inclination of the pad 400, resulting in a large inclination of the door body 3 after being adjusted.

[0301] In the above, |J1Z|:|J2Z| is less than 0.9, and |J1Z|:|J2Z| is too small. The height adjustment bolt 2 is too close to the first guide column 50 relative to the second guide column 60, resulting in a large distance between the height adjustment bolt 2 and the second guide column 60. A small amount of inclination of the pad 400 will cause the pad 400 to be stuck by the second guide column 60, thereby increasing the inclination of the pad 400, resulting in a large inclination of the door body 3 after being raised.

[0302] The setting of 0.9≤|J1Z|:|J2Z|≤1.2 makes the height-adjusting bolt 2 moderately biased toward the second guide column 60 relative to the first guide column 50, so that the supporting force of the height-adjusting bolt 2 on the pad 400, etc. is more balanced, so as to adjust the height of the pad 400, etc. smoothly and without tilting, thereby ensuring that the door body is in a non-tilted state after adjustment.

[0303] In some embodiments of the present application, the cross section of the top plate 22 perpendicular to the central axis of the height adjustment bolt 2 is circular. The radius of the circular cross section of the top plate 22 perpendicular to the central axis of the height adjustment bolt 2 is denoted as R T .

[0304] The cross-sectional radius of the first guide column 50 perpendicular to the central axis of the height-adjusting bolt 2 is R1.

[0305] The distance between the projection point T of the height adjustment bolt and the projection point J1 of the first guide column is recorded as |TJ1|.

[0306] Among them, 0.7≤(R1+R T ):|TJ1|≤0.9.

[0307] 0.7≤(R1+R T ): The setting of |TJ1|≤0.9 limits the distance between the top plate 22 of the height-adjusting bolt 2 supporting the pad 400 and the guiding interaction surface of the first guide column 50 for guiding the pad 400, so as to limit the distance between the height-adjusting bolt 2 and the first guide column 50 without interaction with the pad 400, so that the height-adjusting bolt 2 can better support and drag the pad 400, etc., and more steadily lift the pad 400, etc., to avoid the pad 400 from tilting and being stuck by the first guide column 50.

[0308] (R1+R T ):|TJ1|>0.9,(R1+R T If |TJ1| is too large, the combined area of the support provided by the height-adjusting bolt 2 on the backing plate 400 and the outer diameter of the first guide post 50 are too large. Consequently, the combined area occupied by the first mating recess 405 on the backing plate 400 and the diameter of the first guide hole 401 on the backing plate 400, which mates with the first guide post 50, is too large, restricting the location and placement of the second fastener 92 or the first fastener 91 on the backing plate 400. Furthermore, if the distance between the height-adjusting bolt 2 and the first guide post 50 is too small, the hinge plate 4 between the adjustment hole 46 for mounting the height-adjusting bolt 2 and the first guide post 50 is weakened, making the hinge plate 4 susceptible to damage.

[0309] (R1+R T ): |TJ1|<0.7, (R1+R T): |TJ1| is too small, the sum of the supporting area of the height-adjusting bolt 2 on the pad 400 and the outer diameter of the first guide column 50 is too small, then the sum of the area occupied by the first matching recess 405 on the pad 400 and the area occupied by the aperture of the first guide hole 401 on the pad 400 that matches the first guide column 50 is too small, and the distance between the height-adjusting bolt 2 and the first guide column 50 is too large, causing the pad 400 to be easily stuck by the first guide column 50.

[0310] The cross-sectional radius of the second guide post 60 perpendicular to the central axis of the height adjustment bolt 2 is R2. The distance between the height adjustment bolt projection point T and the second guide post projection point J2 is denoted as |TJ2|.

[0311] 0.6≤(R2+R T ):|TJ2|≤0.9.

[0312] 0.6≤(R2+R T ): The setting of |TJ2|≤0.9 limits the distance between the top plate 22 of the height-adjusting bolt 2 supporting the pad 400 and the guiding interaction surface of the second guide column 60 for guiding the pad 400, so as to limit the distance between the height-adjusting bolt 2 and the second guide column 60 without interaction with the pad 400, so that the height-adjusting bolt 2 can better support and drag the pad 400, etc., and more steadily lift the pad 400, etc., to avoid the pad 400 from tilting and being stuck by the second guide column 60.

[0313] (R2+R T ):|TJ2|>0.9,(R1+R T If |TJ1| is too large, the combined area of the support provided by the height-adjusting bolt 2 on the backing plate 400 and the outer diameter of the second guide post 60 are too large. Consequently, the combined area occupied by the first mating recess 405 on the backing plate 400 and the diameter of the second guide hole 402 on the backing plate 400, which mates with the second guide post 60, is too large, restricting the location and placement of the second fastener 92 or the first fastener 91 on the backing plate 400. Furthermore, if the distance between the height-adjusting bolt 2 and the second guide post 60 is too small, the hinge plate 4 between the adjustment hole 46 for mounting the height-adjusting bolt 2 and the second guide post 60 is weakened, making the hinge plate 4 susceptible to damage.

[0314] (R2+R T ):|TJ2|<0.6,(R1+R T ): |TJ1| is too small, the sum of the supporting area of the height-adjusting bolt 2 on the pad 400 and the outer diameter of the second guide column 60 is too small, then the sum of the area occupied by the first matching recess 405 on the pad 400 and the area occupied by the aperture of the second guide hole 402 on the pad 400 that matches the second guide column 60 is too small, and the distance between the height-adjusting bolt 2 and the second guide column 60 is too large, causing the pad 400 to be easily stuck by the second guide column 60.

[0315] The above also limits the distance between the edge of the supporting pad 400 of the height-adjusting bolt 2 and the interaction surface for guiding the pad 400 of the first guide column 50, and the distance between the edge of the supporting pad 400 of the height-adjusting bolt 2 and the interaction surface for guiding the pad 400 of the second guide column 60, so that the supporting force of the height-adjusting bolt 2 can balance the interaction between the pad 400 and the first guide column 50, and the pad 400 and the second guide column 60, so that the pad 400 and the like can move smoothly and without tilting as a whole under the supporting force of the height-adjusting bolt 2.

[0316] In some embodiments of the present application, the projection point T of the height adjustment bolt is located at the geometric center of the pad 400, so that the height adjustment bolt 2 can bear the force on the gasket more smoothly, thereby enabling the height adjustment bolt 2 to adjust the height of the pad 400 more smoothly and without tilting, ensuring that the door body 3 does not tilt after adjustment.

[0317] In some embodiments of the present application, a foot 11 is provided on the side of the hinge plate 4 away from the backing plate 400. The foot 11 is connected to the hinge plate 4 by bolts. By adjusting the position of the foot 11 relative to the hinge plate 4 in a direction perpendicular to the hinge plate 4, the box body 1 can be placed stably.

[0318] In some embodiments of the present application, a rolling member 12 is provided on the hinge plate 4 to facilitate the movement of the refrigerator.

[0319] In some embodiments of the present application, the foot 11 is located on a side of the height-adjusting bolt 2 away from the first side wall of the box body 1 and the plane where the access opening is located.

[0320] In some embodiments of the present application, the rolling element 12 is located on a side of the height-adjusting bolt 2 close to the rear wall of the box body 1 .

[0321] In some embodiments of the present application, the height-adjusting bolt 2 is provided on the first plate portion 41 .

[0322] The above arrangement makes the adjustment portion 24 of the height adjustment bolt 2 located on the side of the hinge plate 4 away from the pad 400 close to the first body side wall and not blocked by the pad 11, rolling member 12, etc., making it convenient for the user to apply force to the adjustment portion 24 from the side of the first body side wall of the box body 1 to adjust the height.

[0323] In some embodiments of this application, refer to Figure 4-Figure 5 The fixing member 200 includes a support portion 230 for supporting the door body 3. The support portion 230 is located on a side of the fixing plate 210 away from the backing plate 400. The support portion 230 is arranged around the first through hole 211 on the fixing plate 210. The first hinge shaft 5 passes through the first through hole 211 and is surrounded by the support portion 230.

[0324] In some embodiments of the present application, the fixing plate 210 and the supporting portion 230 are integrally formed.

[0325] When the movable member 300 on the door body 3 cooperates with the fixed member 200, the movable member 300 cooperates with the support portion 230 on the fixed member 200. The door body 3 is supported by the support portion 230 on the fixed member 230 fixed to the box body 1 cooperating with the movable member 300 fixed to the door body 3.

[0326] In some embodiments of the present application, the surface of the fixing plate 210 that contacts and cooperates with the pad 400 is recorded as a fixing matching surface 240 .

[0327] In some embodiments of the present application, the end surface of the fixing plate 210 close to the hinge plate 400 is recorded as the fixing mating surface 240 .

[0328] The plane where the second through hole 212 opens away from the end of the pad 400 is marked as the second plane 260. The distance between the second plane 260 and the fixed matching surface 240 is marked as X1.

[0329] The plane where the opening of the first through hole 211 passes through the support portion 230 and is away from one end of the pad 400 is located is recorded as the first plane 250. The distance between the first plane 250 and the fixed matching surface 240 is recorded as X2.

[0330] Among them, X1<X2. The above setting makes the movable part 300 located on the door body 3 cooperate with the first plane 250, and at the same time makes a first gap μ exist between the movable part 300 located on the door body 3 and the second plane 260. The setting of the above first gap μ prevents the door body 3 from interacting with the second plane 260. The above setting reduces the mutual contact area between the fixed part 200 and the movable part 300, thereby reducing the wear area of the components caused by the friction force of the relative movement of the fixed part 200 and the movable part 300. Since the second hinge shaft 6 moves relative to the second track groove 8, the movement track of the second hinge shaft 6 is long (compared with the first track groove 7, the extension length of the second track groove 8 is large), and the above setting avoids the wear of the second track groove 8 that cooperates with the second hinge shaft 6 caused by the relative movement of the fixed part 200 and the movable part 300.

[0331] Wherein, the first gap μ=X2-X1.

[0332] In some embodiments of the present application, the first guide portion 220 is located on a side of the second hinge axis 6 away from the first hinge axis 5. The distance between the first guide portion 220 and the first hinge axis 5 is greater than the distance between the first guide portion 220 and the second hinge axis 6.

[0333] In some embodiments of the present application, along the direction of the central axis of the first hinge shaft 5 , the point on the first guide portion 220 at the maximum distance from the fixed mating surface 240 is recorded as the first maximum adjustment point A1.

[0334] In some embodiments of the present application, in a plane perpendicular to the central axis of the first hinge axis 5, the first maximum adjustment point A1 is located on the side of the second hinge axis 6 that is away from the first hinge axis 5 (or the side wall of the first body). That is, the distance between the first maximum adjustment point A1 and the first hinge axis 5 is greater than the distance between the first guide portion 220 and the second hinge axis 6.

[0335] Correspondingly, the first guide portion 220 on the movable member 300 is located on a side of the second track groove 8 away from the first track groove 7 .

[0336] In some embodiments of the present application, the first maximum adjustment point A1 is located on the side of the first hinge axis 5 away from the rear wall of the box body 1. The first maximum adjustment point A1 is located on the side of the second hinge axis 6 close to the rear wall of the box body 1.

[0337] The above further defines the relative positional relationship between the first maximum adjustment point A1 and the first hinge axis and the second hinge axis in the front-to-back direction. When there is a height difference between the first maximum adjustment point A1 and the second plane of the support portion (the first maximum adjustment point A1 is located on the side of the second plane close to the door body 3), and when the gravitational potential energy is maximum during the action of the gravity self-closing structure (the first maximum adjustment point A1 of the first guide portion is the action point), the above-mentioned scheme will limit the inclination of the door body to a smaller range, so as to effectively ensure the matching relationship between the first hinge axis and the first track groove, and the second hinge axis and the second track groove, and avoid excessive force between the double axes and the double grooves due to excessive inclination of the door body, which will cause the door body to be unable to open or close smoothly.

[0338] It should be noted that when there are multiple points with the greatest distance between the first guide portion 220 and the fixed mating surface 240, the point with the smallest distance from the central axis of the first hinge axis 5 is the first maximum adjustment point A1. For example, if the end surface of the first guide portion 220 away from the backing plate 400 is a plane parallel to the fixed mating surface 240, then all points on this plane are the points with the greatest distance from the fixed mating surface 240, and the point on this plane with the smallest distance from the central axis of the first hinge axis 5 is the first maximum adjustment point A1.

[0339] Similarly, when the end face of the first guide portion 220 away from the pad 400 is a straight line parallel to the fixed mating surface 240, the points on the above straight line (line segment) are all points with the largest distance from the fixed mating surface 240, and the point on the straight line (line segment) with the smallest distance from the center axis of the first hinge axis 5 is the first maximum adjustment point A1.

[0340] The second guide portion 320 provided on the fixed part 200 is located on the side of the second hinge axis 6 away from the first hinge axis 5. The fixed part 200 and the movable part 300 cooperate through the support portion 230 surrounding the first hinge axis 5. When the first guide portion 220 and the second guide portion 320 of the gravity self-closing structure interact with each other, the gravity of the door body 3 is far away from the contact and matching force support position of the movable part 300 and the fixed part 200 (the matching position of the support portion 230 and the movable part 300), and the torque generated by the gravity of the door body 3 is large, which is more conducive to the door body 3 rising and falling under its gravity, so that the torque generated by gravity is sufficient to make the door body 3 close automatically.

[0341] As described above, the second plane 260 of the fixing member 200 cooperates with the movable member 300 on the door body 3 to support the door body 3. When the gravity self-closing structure acts, the first guide portion 220 and the second guide portion 320 interact with each other to support the door body 3.

[0342] When the door body 3 is in the closed state, the first guide part 220 and the second guide part 320 still maintain contact with each other, so as to always provide a force to promote the automatic closing of the door body 3, so that the door body 3 still tends to approach the box body 1 in the closed state, so as to tighten the door seal and effectively ensure the sealing of the door body 3 and the box body 1.

[0343] In some embodiments of the present application, the height direction of the box body 1 is the same as the central axis direction of the first hinge shaft 5 .

[0344] In some embodiments of this application, refer to Figure 10 Along the height direction of the box body 1, the point on the rolling element 12 at the greatest distance from the top wall of the box body 1 is recorded as the first point F1. Along the height direction of the box body 1, the point on the fixing element 200 at the smallest distance from the top wall of the box body 1 is recorded as the second point F2.

[0345] The distance between the first point F1 and the second point F2 along the height direction of the box body 1 (along the central axis direction of the first hinge shaft 5 ) is recorded as W.

[0346] In some embodiments of the present application, 32 mm ≤ W ≤ 36 mm.

[0347] In order to meet the height requirements of the refrigerator 100 for the target audience, the maximum height of the refrigerator 100 is limited.

[0348] W>36mm, W is too large, resulting in an increase in the space occupied by the components on the side of the bottom wall of the box 1 away from the top wall along the height direction of the box 1, resulting in a decrease in the distance between the bottom wall of the box 1 and the top wall of the box 1, and ultimately resulting in a decrease in the accommodating cavity in the box 1.

[0349] W is less than 32 mm. If W is too small, the size of the components between the first point F1 and the second point F2 (fixing part 200, pad 400, hinge plate 4 and rolling part 12) will be limited and reduced accordingly, resulting in reduced strength of at least one of the components with reduced size among the fixing part 200, pad 400, hinge plate 4 and rolling part 12, which cannot meet product quality requirements.

[0350] The setting of 32mm≤W≤36mm not only ensures the strength of each component to meet the product quality requirements, but also reduces the space occupied by the box body 1 in the height direction to increase the volume of the accommodating cavity.

[0351] In some embodiments of the present application, along the height direction of the box body 1 , the distance between the bottom wall of the box body and the first point F1 is recorded as W1; wherein, 22 mm ≤ W1 ≤ 28 mm.

[0352] In order to meet the height requirements of the refrigerator 100 for the target audience, the maximum height of the refrigerator 100 is limited.

[0353] W1>28mm, W1 is too large, resulting in an increase in the space occupied by the components on the side of the bottom wall of the box 1 away from the top wall along the height direction of the box 1, resulting in a decrease in the distance between the bottom wall of the box 1 and the top wall of the box 1, and ultimately resulting in a decrease in the accommodating cavity in the box 1.

[0354] W1 is less than 22 mm. If W1 is too small, the size of the components between the bottom wall of the box and the first point F1 (the hinge plate 4 and the rolling element 12) will be limited and reduced accordingly, resulting in reduced strength of at least one of the components with reduced size, such as the hinge plate 4 and the rolling element 12, which cannot meet the product quality requirements.

[0355] The setting of 22mm≤W1≤28mm not only ensures the strength of each component to meet the product quality requirements, but also reduces the space occupied by the box body 1 in the height direction to increase the volume of the accommodating cavity.

[0356] In some embodiments of the present application, along the height direction of the box body, the distance between the second point F2 and the hinge plate 4 is recorded as W2; wherein 8mm≤W2≤12mm.

[0357] In order to meet the height requirements of the refrigerator 100 for the target audience, the maximum height of the refrigerator 100 is limited.

[0358] W2>12mm, W2 is too large, resulting in an increase in the space occupied by the lower end wall of the door body 3 away from the side of its top wall along the height direction of the box body 1, a decrease in the height of the door body 3, and a decrease in the height of the access opening of the accommodating cavity that can be closed or opened, which ultimately leads to a reduction in the accommodating cavity in the box body 1.

[0359] W2 is less than 8mm. If W2 is too small, the size of the components (fixing part 200, pad 400) between the lower end wall of the door body 3 (the second point F2) and the hinge plate 4 will be limited and reduced accordingly, resulting in a decrease in the strength of at least one of the components with reduced size, such as the fixing part 200 and the pad 400, which cannot meet the product quality requirements.

[0360] The setting of 8mm≤W2≤12mm not only ensures the strength of each component to meet the product quality requirements, but also reduces the space occupied along the height direction of the box body 1 to increase the volume of the accommodating cavity.

[0361] In some embodiments of the present application, the first plane 250 on the fixing member 200 is the plane where the distance between the supporting portion 230 and the top wall of the box body 1 is the smallest. That is, the second point F2 is located on the first plane 250 .

[0362] In some embodiments of the present application, the first plane 250 on the fixing plate 210 is the plane with the smallest distance between the fixing member 200 and the top wall of the box 1. That is, the distance between the first maximum adjustment point A1 and the top wall of the box 1 is not less than the distance between the first plane 250 and the top wall of the box 1.

[0363] In the height direction of the box body 1 , the first maximum adjustment point A1 is located on a side of the first plane 250 away from the top wall of the box body 1 , or is located on the first plane 250 .

[0364] In some embodiments of the present application, the first maximum adjustment point A1 is located on a side of the first plane 250 close to the top wall of the box body 1 .

[0365] In some embodiments of the present application, along the central axis direction of the first hinge axis 5, the distance from the first plane 250 of the fixing member 200 to the fixing mating surface 240 is recorded as W. G , 6mm≤W G ≤8mm.

[0366] Above 6mm≤W G The setting of ≤8 mm ensures that the fixing member 200 has sufficient strength and reduces the space occupied by the fixing member 200 along the central axis direction of the first hinge shaft 5.

[0367] In order to meet the height requirements of the refrigerator 100 for the target audience, the maximum height of the refrigerator 100 is limited.

[0368] W G >8mm,W G If it is too large, W will be too large, resulting in an increase in the space occupied by the components on the side of the bottom wall of the box body 1 away from the top wall, resulting in a decrease in the distance between the bottom wall of the box body 1 and the top wall of the box body 1, and ultimately resulting in a decrease in the accommodating cavity in the box body 1.

[0369] W G <6mm,WG If it is too small, the strength of the fixing member 200 is too poor to support the box body 1, and the product quality is unqualified.

[0370] In some embodiments of the present application, the thickness of the hinge plate 4 along the central axis of the first hinge shaft 5 is recorded as W. J , 4mm≤W J ≤5mm.

[0371] Above 4mm≤W J The setting of ≤5 mm ensures that the hinge plate 4 has sufficient strength and reduces the space occupied by the hinge plate 4 along the central axis direction of the first hinge shaft 5 .

[0372] In order to meet the height requirements of the refrigerator 100 for the target audience, the maximum height of the refrigerator 100 is limited.

[0373] W J >5mm,W J If it is too large, W will be too large, resulting in an increase in the space occupied by the components on the side of the bottom wall of the box body 1 away from the top wall, resulting in a decrease in the distance between the bottom wall of the box body 1 and the top wall of the box body 1, and ultimately resulting in a decrease in the accommodating cavity in the box body 1.

[0374] W J <4mm,W J If it is too small, the strength of the hinge plate 4 is too poor to support the box body 1, and the product quality is unqualified.

[0375] Among them, as a thickness W of the hinge plate 4 J is defined as:

[0376] The plane parallel to the plane where the take-and-put port is located intersects with the hinge plate 4 to obtain an intersection section, and the length of the intersection section along the central axis direction of the first hinge shaft 5 is the thickness W of the hinge plate 4. J As above, the thickness W of the hinge plate 4 can be measured in the above manner. J .

[0377] As another example, regarding the thickness W of the hinge plate 4 J is defined as:

[0378] The normal line of the plane where the take-and-put port is located is recorded as the first normal line. The section of the hinge plate 4 perpendicular to the first normal line is the thickness section, and the length of the thickness section along the central axis of the first hinge shaft 5 is the thickness W of the hinge plate 4. J As above, the thickness W of the hinge plate 4 can be measured in the above manner. J .

[0379] Along the central axis of the first hinge shaft 5, the thickness of the pad 400 is W. D , 2.5mm≤WD ≤5mm.

[0380] W D >5mm,W D If the size of the bottom wall of the box body 1 is too large, the space occupied by the components on the side away from the top wall will increase, resulting in a decrease in the distance between the bottom wall of the box body 1 and the top wall of the box body 1, and ultimately resulting in a decrease in the accommodating cavity in the box body 1.

[0381] W D <2.5mm,W D If the threaded connection length between the first connecting hole 403 and the second connecting hole 404 on the base plate 400 is too small, the depth of the first connecting hole 403 and the second fastener 92 and the connection length between the second connecting hole 404 and the first fastener 91 will increase, and the connection strength between the fixing part 200 and the base plate 400 connected by the second fastener 92 and the first fastener 91 will be poor.

[0382] 2.5mm≤W D The setting of ≤5 mm ensures that the pad 400 , the pad 400 and the first fastener 91 and / or the second fastener 92 have sufficient strength, and reduces the space occupied by the pad 400 along the central axis direction of the first hinge shaft 5 .

[0383] Among them, the thickness measurement method of the hinge plate 4; as a thickness W of the backing plate 400 D is defined as:

[0384] The plane parallel to the plane where the take-and-put port is located intersects with the pad 400 to obtain an intersecting cross section. The length of the intersecting cross section along the central axis of the first hinge shaft 5 is the thickness W of the pad 400. D As above, the thickness W of the pad 400 can be measured and obtained in the above manner. D .

[0385] As another example, regarding the thickness W of the hinge plate 4 D is defined as:

[0386] The normal line of the plane where the access opening is located is recorded as the first normal line. The section of the pad 400 perpendicular to the first normal line is the thickness section, and the length of the thickness section along the central axis of the first hinge axis 5 is the thickness W of the pad 400. D As above, the thickness W of the pad 400 can be measured and obtained in the above manner. D .

[0387] In some embodiments of the present application, the hinge plate 4 includes a first plate portion 41 and a second plate portion 42. The first plate portion 41 is located on a side of the second plate portion 42 away from the rear wall of the box body 1.

[0388] The first plate portion 41 and the second plate portion 42 are connected by a third plate portion 43. The third plate portion 43 includes a first connecting end and a second connecting end that are oppositely disposed. The first connecting end and the second connecting end are arranged along the central axis of the first hinge shaft 5, with the first connecting end located on the side of the second connecting end away from the top wall of the box body 1.

[0389] The first connecting end of the third plate portion 43 is connected to the first plate portion 41, and the second connecting end of the third plate portion 43 is connected to the second plate portion 42. Along the height direction of the box body 1, the first plate portion 41 is located below the second plate portion 42. Along the front-to-back direction of the box body 1 (the first normal direction), the first plate portion 41 is located in front of the second plate portion 42.

[0390] The first hinge axis 5 and the second hinge axis 6 are provided on the first plate portion 41 . The backing plate 400 is mounted on the first plate portion 41 , and the fixing member 200 is mounted on a side of the backing plate 400 away from the first plate portion 41 .

[0391] The rolling element 12 is mounted on the second plate portion 42 and is at least partially located on a side of the second plate portion 42 away from the bottom wall of the box body 1 .

[0392] The second point F2 on the rolling element 12 is located on the side of the second plate portion 42 away from the pad 400. This effectively ensures that the rolling element 12 contacts the placement surface of the refrigerator 100, so that the rolling element 12 can play its rolling role.

[0393] The hinge plate 4 is fixedly connected to the bottom wall of the box body 1 through the second plate portion 42 .

[0394] With the above arrangement of the hinge plate 4, the distance between the first plate portion 41 and the bottom wall of the box body 1 is increased to leave more height space for installing the backing plate 400 and the fixing member 200. This ensures that the thickness of the backing plate 400 and the fixing member 200 meets the strength requirements.

[0395] In addition, the second plate portion 42 cooperates with the bottom wall of the box body 1, and the second plate portion 42 has a large space away from the bottom side of the box body 1, which increases the height space for installing the rolling element 12, and can install a rolling element 12 with a larger diameter, so that the installed rolling element 12 meets the strength requirements.

[0396] The above arrangement makes full use of the height space along the central axis direction of the first hinge shaft 5 by setting the height difference between the first plate portion 41 and the second plate portion 42 along the height direction of the box body 1, thereby ensuring the strength of each component and reducing the distance between the first point F1 and the second point F2 along the height direction of the box body 1, thereby reducing the height space of the above components, thereby increasing the size of the box body 1 along its height direction and increasing the volume of the accommodating cavity.

[0397] In some embodiments of the present application, the distance between the first plate portion 41 and the second plate portion 42 along the height direction of the box body 1 is recorded as the first folding height W. F , where 1mm≤W F ≤2mm.

[0398] 1mm≤W F ≤2mm can ensure that the pad 400 and the fixing member 200 effectively support the door body 3 and reduce the overall occupied space along the height direction of the box body 1 to increase the volume of the accommodating cavity of the box body.

[0399] W F >2mm, first fold height W F If the thickness of the backing plate 400 and the fixing member 200 is too large, the downward displacement of the backing plate 400 and the fixing member 200 will be too large, and the door body 3 will not be effectively supported. To ensure support for the door body 3, the thickness of the backing plate 400 and the fixing member 200 must be increased, which will cause the overall dimension between the first point F1 and the second point F2 to be too large, reducing the storage volume of the box body 1. In addition, a larger diameter rolling member 12 is required to ensure that the lowest point of the rolling member 12 is located below the first plate portion 41 to ensure effective rolling action of the rolling member 12, which will cause the box body 1 to be raised, reducing the storage space of the box body 1.

[0400] W F <1mm, first fold height W F If it is too small, the height space cannot be effectively utilized, the height dimension occupied by the pad 400 and the fixing part 200 increases, and the height space occupied by the rolling part 12 increases, resulting in the overall dimension between the first point F1 and the second point F2 being too large, reducing the accommodating space of the box body 1.

[0401] As a kind of F The definition of W is: F It is the distance between the surface of the first plate portion 41 close to the box body 1 and the surface of the second plate portion 42 close to the box body 1 .

[0402] As another example of W F The definition of W is: F is the projected length of the third plate portion 43 along the height direction of the box body 1. That is, it is the distance between the first connection end and the second connection end of the third plate portion 43 along the height direction of the box body 1.

[0403] In some embodiments of the present application, a mounting hole 421 is provided on the second plate portion 42 , and an annular protrusion 422 is formed along an edge of the mounting hole 421 and protrudes toward a side away from the backing plate 400 .

[0404] The rolling element 12 includes a rotating shaft and a roller. The opposite ends of the rotating shaft of the rolling element 12 are fixedly connected to the annular protrusion 422. The roller rotates around its rotating shaft and is located on the side of the hinge plate 4 close to the backing plate 400 away from the backing plate 400.

[0405] In some embodiments of the present application, connecting plates 423 are provided on both side walls of the annular protrusion 422 along the width direction of the box body 1. The two ends of the rotating shaft of the rolling element 12 are fixedly connected to the connecting plates 423 on the corresponding sides.

[0406] In some embodiments of this application, refer to Figure 20 , the roller is at least partially located within the mounting hole 421. That is, when projected onto the plane of the access opening, the projection of the roller at least partially overlaps with the projection of the second plate portion 42. This arrangement fully utilizes the thickness of the hinge plate 4, reducing the distance from the hinge plate 4 to the lowest point (F2) where the roller 12 is away from the backing plate 400. This reduces the height of the box 1 and further increases the accommodating cavity of the box 1.

[0407] In some embodiments of this application, refer to Figure 21-22 The guide portion and the guiding portion of the second hinge assembly provided at the upper end of the door body 3 are formed on the mounting block 13 .

[0408] Specifically, the mounting block 13 includes a plate body 86 , and the first track groove 7 and the second track groove 8 are provided on the plate body 86 .

[0409] The end cap at the upper end of the door body 3 is provided with a receiving groove, in which the mounting block 13 is inserted. Then the plate 86 is fastened to the door body 3 by screws or the like.

[0410] In some embodiments of the present application, a plurality of screws for connecting the plate 81 and the receiving groove are distributed at the edge of the plate 86 surrounding the first track groove 7 and the second track groove 8 .

[0411] In some embodiments of this application, refer to Figure 7-Figure 8 The first track groove 7 includes a first groove bottom 70 and a first groove wall 71 surrounding the edge of the first groove bottom 70 . The first groove wall 71 encloses a first notch 72 disposed opposite to the first groove bottom 70 .

[0412] The second track groove 8 includes a second groove bottom 80 and a second groove wall 81 surrounding the edge of the second groove bottom 80 . The second groove wall 81 encloses a second groove opening 82 disposed opposite to the second groove bottom 80 .

[0413] The length of the second track groove 8 is greater than that of the first track groove 7. It should be noted that the length of each track groove is the length of the moving track line of the hinge axis relative to the track groove it is adapted to.

[0414] In some embodiments of the present application, the depth of the first track groove 7 is denoted as S1, and the depth of the second track groove 8 is denoted as S2, wherein S1>S2, that is, the depth of the first track groove 7 is greater than the depth of the second track groove 8.

[0415] Because the second hinge assembly is installed at the upper end of the door body 3, a receiving portion for accommodating the second hinge assembly is formed at the upper end of the door body 3 to avoid the first track groove 7 and the second track groove 8. Therefore, the foaming layer content in the area of the door body 3 where the second hinge assembly is installed is low, and the thermal insulation effect of the door body 3 is weakened. Because the second track groove 8 is longer along its track direction, the space occupied by the second track groove 8 is larger, and its impact on the thermal insulation effect of the door body 3 is greater. The above setting makes the depth of the second track groove 8 smaller than the depth of the first track groove 7, so as to reduce the space of the door body 3 occupied by the second track groove 8, thereby reducing its impact on the thermal insulation effect of the door body 3.

[0416] It should be noted that the depth of the first track groove 7 and / or the second track groove 8 is defined as the maximum depth within the groove.

[0417] For a track groove with a flat bottom perpendicular to the groove wall, the distance between the plane where the first notch 72 is located and the first groove bottom 70 is measured as the depth S1 of the first track groove 7. The distance between the plane where the second notch 82 is located and the second groove bottom 80 is the depth S2 of the second track groove 8.

[0418] For a track groove whose groove bottom includes multiple groove sections at different distances from its groove opening, the depth of the first track groove 7 is its maximum depth, and the depth of the second track groove 8 is its minimum depth.

[0419] In some embodiments of the present application, the depth of the second hinge shaft 6 inserted into the second track groove 8 is recorded as C2, where 6 mm ≤ C2 ≤ 12 mm.

[0420] C2>12mm, C2 is too large, and the corresponding depth of the second track groove 8 is too large. In addition to the length of the second track groove 8 along its center track line, the space occupied by the second track groove 8 is too large, resulting in a small content of the foam layer in the area where the second track groove 8 is located on the door body 3, and its thermal insulation effect is poor, which also causes condensation in this area.

[0421] C2 is less than 12mm, C2 is too small, the corresponding depth of the second track groove 8 is too small, the limiting effect of the second track groove 8 on the second hinge shaft 6 is too small, and the second hinge shaft 6 also falls off from the second track groove 8, resulting in the second track groove 8 being unable to guide the second hinge shaft 6.

[0422] The setting of 6mm≤C2≤12mm can prevent the second hinge shaft 6 from falling out of the second track groove 8, and can also ensure that the foaming layer content in the area where the second track groove 8 in the door body 3 is located meets the insulation requirements.

[0423] In some embodiments of the present application, the first groove bottom 70 of the first track groove 7 is perpendicular to the first groove wall 71. The first groove bottom 70 is parallel to the plane where the first notch 72 is located.

[0424] In some embodiments of this application, refer to Figure 23-Figure 25 The second track groove 8 includes a first groove section 83 and a second groove section 84 located on a side of the first groove section 83 close to the door side wall 33 .

[0425] During the process of closing the door body 3 from the open state, the second hinge shaft 6 first moves relative to the second slot section 84, and then moves relative to the first slot section 83. That is, during the process of closing the door body 3 from the open state, the second hinge shaft 6 moves relative to the second slot section 84 and the first slot section 83 in sequence.

[0426] In some embodiments of the present application, the second track groove 8 includes a third groove segment 85. The first groove segment 83, the third groove segment 85, and the second groove segment 84 are sequentially arranged along the extension direction of the central track line of the second track groove 8. One end of the third groove segment 85 is connected to the first groove segment 83, and the other end is connected to the second groove segment 84. The first groove segment 83 is located at the end of the third groove segment 85 away from the door sidewall 33, and the second groove segment 84 is located at the end of the third groove segment 85 closer to the door sidewall 33.

[0427] When the door body 3 is closed from an open state, the second hinge shaft 6 first moves relative to the second slot section 84, then moves relative to the third slot section 85, and finally moves relative to the first slot section 83. That is, when the door body 3 is closed from an open state, the second hinge shaft 6 moves relative to the second slot section 84, the third slot section 85, and the first slot section 83 in sequence.

[0428] The third groove section 85 is provided to transitionally connect the first groove section 83 and the second groove section 85 , so as to facilitate forming and meet the requirement of the second hinge shaft 6 moving relative to the second track groove 8 .

[0429] The depth of the first groove section 83 is the first groove depth S 21 The depth of the second groove section 84 is the second groove depth S 22 Among them, the first groove depth S 21 >Second groove depth S 22 .

[0430] Above, the first groove depth S 21 , the second groove depth S 22 is the groove depth of the corresponding groove section.

[0431] In some embodiments of the present application, the distance between the first groove section 83 and the plane where the second groove opening 82 is located is the first groove depth S 21 The distance between the second groove section 84 and the plane where the second groove opening 82 is located is the second groove depth S 22 .

[0432] In some embodiments of the present application, the connection surface between the first guide portion 220 and the fixing plate 210 is referred to as a fixed connection surface.

[0433] Along the height direction of the box 1, the distance between the first maximum adjustment point A1 and the fixed connection surface is recorded as K A1 .

[0434] The connection surface between the second guide portion 320 and the movable plate 310 is recorded as the movable connection surface. Along the direction of the central axis of the first hinge shaft 5, the point on the second guide portion 320 with the maximum distance from the movable connection surface is recorded as the second maximum adjustment point A2. Along the height direction of the box body 1, the distance between the second maximum adjustment point A2 and the movable connection surface is recorded as K A2 .

[0435] The distance between the first plane 250 and the fixed connection surface is denoted as Z.

[0436] The maximum displacement (maximum height adjustment) of the door body 3 along the height direction of the box body 1 is S0. S0 = K A1 +K A2 -Z.

[0437] In some embodiments of the present application, at least when the first guide portion 220 and the second guide portion 320 interact to move the door body 3 along the height direction of the box body 1 (upward or downward), the second hinge shaft 6 moves relative to the first slot section 83.

[0438] The above setting makes the depth setting of the second track groove 8 more targeted, so as to further reduce the space occupied by the second track groove 8 while ensuring that it does not collide with the second hinge shaft 6, so as to avoid the second track groove having a long length causing the insulation layer to be thinned and the insulation effect to be worse.

[0439] In some embodiments of the present application, during the process of the door body 3 being closed from the open state and the movable member 300 not interacting with the fixed member 200 , the second hinge shaft 6 moves relative to the second slot section 84 ;

[0440] During the process of the movable member 300 and the fixed member 200 interacting to move the door body 3 along the height direction of the box (upward or downward), the second hinge shaft 6 moves 83 relative to the first groove section. The above arrangement allows the depth setting of the second track groove 8 to be more targeted, thereby further reducing the space occupied by the second track groove 8 while ensuring that there is no collision with the second hinge shaft 6, thereby preventing the long second track groove from causing the insulation layer to be thinned and the insulation effect to be reduced.

[0441] In some embodiments of the present application, during the interaction between the first guide portion 220 and the second guide portion 320 of the gravity self-closing structure of the door body 3 , the second hinge shaft 6 moves relative to the first slot section 83 .

[0442] In some embodiments of the present application, S 21 -S 22 The above arrangement ensures that when the door body 3 is lifted by the interaction of the gravity closing structure, no interaction occurs between the second hinge shaft 6 and the second groove bottom 80 of the second track groove 8, thereby ensuring that the second hinge shaft 6 and the second track groove 8 do not collide.

[0443] In some embodiments of the present application, the end where the third slot segment 85 is connected to the second slot segment 84 is recorded as the second transition end; the end where the third slot segment 85 is connected to the first slot segment 83 is recorded as the first transition end.

[0444] The distance between the second transition end and the plane where the second notch 82 is located is smaller than the distance between the first transition end and the plane where the second notch 82 is located.

[0445] The third groove inner bottom wall is provided to transitionally connect the first groove section 83 and the second groove section 84 of different depths, thereby preventing the second hinge shaft 6 from being stuck when moving relative to the second track groove 8 .

[0446] Along the direction from the second transition end to the first transition end, the third groove inner bottom wall of the third groove section 85 opposite to the second groove opening 82 extends in a direction away from the plane where the second groove opening 82 is located.

[0447] As described above, the inner bottom wall of the third groove section 85 smoothly connects the inner bottom wall of the first groove section 83 and the inner bottom wall of the second groove section 84, thereby providing a smooth transition between the first groove section 83 and the second groove section 84, which have different depths. The inclined inner bottom wall of the third groove allows for a gradual transition in depth between the first groove section 83 and the second groove section 84, preventing the second hinge shaft 6 from becoming stuck when moving relative to the second track groove 8.

[0448] In some embodiments of the present application, the outer wall of the groove bottom of the second track groove 8 on the side away from the second groove opening 82 may form a step-shaped connection corresponding to the connection between the first groove section 83 and the second groove section 84 .

[0449] In some embodiments of the present application, the groove bottom thickness of the third groove section 85 decreases continuously along the direction from the second transition end to the first transition end.

[0450] In some embodiments of the present application, the groove bottom thickness of the third groove section 85 remains unchanged along the direction from the second transition end to the first transition end.

[0451] In the above description, the groove bottom thickness of the third groove section 85 is defined as the dimension of the third groove section 85 along the normal direction of the plane where the second groove opening 82 is located.

[0452] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A refrigerator, characterized in that: include: The box body defines a plurality of accommodating cavities; the box body has a first side wall and a second side wall that are oppositely arranged; a door body, the door body being rotatably disposed on the box body to close or open the accommodating cavity; A hinge assembly connects the door body to the box body so that the door body can be flipped relative to the box body; the hinge assembly includes: A first hinge member is provided on the box body and is close to the side wall of the first body; the first hinge member includes: a hinge plate connected to the box body; A first hinge axis and a second hinge axis are provided on the hinge plate; the first hinge axis is located where the second hinge axis is close to the side wall of the first body; A second hinge member is provided on the door body; the second hinge member comprises: A first track groove and a second track groove; wherein the first hinge shaft cooperates with the first track groove, and the second hinge shaft cooperates with the second track groove, so that the door body moves relative to the box body; A gravity self-closing structure is located on the lower side of the door body; the gravity self-closing structure includes: A movable part is located at the lower end of the door body; the movable part includes: a second guide portion, which is provided at the lower end portion of the door body; A fixing member connected to the hinge plate located on the lower side of the door body; the fixing member includes: a first guide portion, which is used to cooperate with the second guide portion to enable the door body to move along the height direction of the box body in a direction away from the top wall of the box body under the action of its gravity; a supporting portion, which cooperates with the movable member to support the door body; a first through hole passing through the support portion; the first hinge shaft passes through the first through hole; a second through hole passing through the fixing member; the second hinge shaft passing through the second through hole; and the first guide portion being located on a side of the second hinge shaft away from the side wall of the first body; The plane where the first through hole passes through the support portion and is away from the opening of one end of the hinge plate is recorded as the first plane, and the plane where the second through hole is away from the opening of one end of the hinge plate is recorded as the second plane; The first plane is located on a side of the second plane away from the hinge plate; a first gap μ is formed between the first plane and the second plane, where μ>0; During the process of the door body closing from an open state and the first guide portion interacting with the second guide portion, the first plane of the support portion cooperates with the movable part, the support portion supports the door body, and the second plane does not interact with the door body.

2. The refrigerator according to claim 1, wherein: The end surface of the fixing member close to the hinge plate is recorded as a fixed matching surface; Along the direction of the central axis of the first hinge shaft, the point on the first guide portion at the maximum distance from the fixed matching surface is recorded as the first maximum adjustment point A1; The first maximum adjustment point A1 is located on a side of the first hinge axis away from the rear wall of the box; the first maximum adjustment point A1 is located on a side of the second hinge axis close to the rear wall of the box.

3. The refrigerator according to claim 1 or 2, characterized in that: The fixing member further comprises: a fixed plate connected to the hinge plate located at the lower side of the door body; the first guide portion is provided on the fixed plate; The movable part further comprises: a movable plate fixedly connected to the lower end of the door body; the second guide portion is provided on the movable plate; The first guide portion includes: a first inclined surface, wherein a first end of the first inclined surface is connected to the first portion of the fixing plate; and a second end of the first inclined surface is farther away from the fixing plate than the first end of the first inclined surface; a second inclined surface, wherein a first end of the second inclined surface is connected to the second portion of the fixing plate; a second end of the second inclined surface is connected to the second end of the first inclined surface; and the second end of the second inclined surface is farther away from the fixing plate than the first end of the second inclined surface; A first protrusion having the largest distance from the fixing plate is formed at a connection between the second end of the first inclined surface and the second end of the second inclined surface; The second guide portion includes: a third inclined surface, wherein a first end of the third inclined surface is connected to the first portion of the movable plate; and a second end of the third inclined surface is farther away from the movable plate than the first end of the third inclined surface; a fourth inclined surface, wherein a first end of the fourth inclined surface is connected to the second portion of the movable plate; a second end of the fourth inclined surface is connected to the second end of the third inclined surface; and the second end of the fourth inclined surface is farther away from the movable plate than the first end of the fourth inclined surface; A second convex portion having the largest distance from the movable plate is formed at a connection between the second end of the third inclined surface and the second end of the fourth inclined surface; The third inclined surface is used to cooperate with the second inclined surface, the fourth inclined surface is used to cooperate with the first inclined surface, and the second convex portion is used to cooperate with the first convex portion.

4. The refrigerator according to claim 1 or 2, characterized in that: The refrigerator further comprises: A height adjustment component is used to adjust the height of the door body relative to the box body; the height adjustment component includes: a backing plate, which is provided between the hinge plate and the fixing member; a height-adjusting bolt passing through the hinge plate and capable of moving relative to the hinge plate along the central axis of the height-adjusting bolt; the height-adjusting bolt is located on a side of the backing plate away from the fixing member; a first guide post, which is provided at an end of the first hinge shaft close to the hinge plate; a second guide post, which is provided at an end of the second hinge shaft close to the hinge plate; Wherein, the pad and the fixing member are mounted on the first guide post and the second guide post; Wherein, in a plane projection perpendicular to the central axis of the height-adjusting bolt, the central axis of the first guide column, the central axis of the second guide column, and the central axis of the height-adjusting bolt are not on the same straight line; The position of the height-adjusting bolt relative to the hinge plate is adjusted, and the height-adjusting bolt drives the pad and the fixing member to move along the first guide column and the second guide column, and drives the door body to move along the central axis of the height-adjusting bolt.

5. The refrigerator according to claim 4, characterized in that The box body includes a first side wall and a second side wall that are oppositely arranged; the first hinge is arranged on the box body and is close to the first side wall; The accommodating cavity has a taking-in and putting-out opening for taking and putting items; The first hinge axis is located on a side of the second hinge axis close to the side wall of the first body and close to the plane where the access opening is located; In a plane projection perpendicular to the central axis of the height adjustment bolt, the projection of the central axis of the height adjustment bolt is marked as the height adjustment bolt projection point T, the projection of the central axis of the first guide post is marked as the first guide post projection point J1, and the projection of the central axis of the second guide post is marked as the second guide post projection point J2; Among them, the height adjustment bolt projection point T is located on the side of the first guide column projection point J1 away from the first body side wall and close to the plane where the pick-up and release port is located, and the height adjustment bolt projection point T is located on the side of the second guide column projection point J2 close to the first body side wall and the plane where the pick-up and release port is located.

6. The refrigerator according to claim 4, characterized in that The fixing member is provided with a first fixing hole; the backing plate is provided with a first connecting hole; the hinge plate is provided with a first hinge hole; wherein the positions of the first fixing hole, the first connecting hole and the first hinge hole correspond to each other; The refrigerator further comprises: A first fastener passes through the first fixing hole and is fixedly connected to the first connecting hole, and an end of the first fastener located on the side of the backing plate away from the fixing member passes through the first hinge hole.

7. The refrigerator according to claim 6, characterized in that The first fastener passes through the first hinge hole and is located at an end of the hinge plate away from the fixing member to form a limit ring by riveting; the outer diameter of the limit ring is larger than the inner diameter of the first hinge hole; The sum of the thicknesses of the fixing member, the backing plate, and the hinge plate around the first fastener is denoted as h, and the length of the first fastener is denoted as L; wherein L is greater than h.

8. The refrigerator according to claim 7, characterized in that The fixing piece is provided with a second fixing hole; The backing plate is provided with a second connecting hole; The hinge plate is provided with a second hinge hole; the positions of the second fixing hole, the second connecting hole and the second hinge hole correspond to each other; The refrigerator further comprises: The second fastener passes through the second fixing hole and is fixedly connected to the second connecting hole. The end of the second fastener located on the side of the backing plate away from the fixing member is located in the second hinge hole.

9. The refrigerator according to claim 8, characterized in that In the projection of the plane where the hinge plate is located, the first guide post is located on a side of the second guide post close to the first body side wall and the rear wall of the box body; The first fastener is located on a side of the first hinge axis close to the first body side wall and close to the rear wall of the box body; the second fastener is located on a side of the second hinge axis away from the first body side wall and close to the rear wall of the box body; Wherein, the second fastener and the first fastener are both located on a side of the first hinge axis and the second hinge axis close to the rear wall of the box body.

10. A refrigerator, characterized in that: include: The box body defines a plurality of accommodating cavities; the box body has a first side wall and a second side wall that are oppositely arranged; a door body, the door body being rotatably disposed on the box body to close or open the accommodating cavity; A hinge assembly connects the door body to the box body so that the door body can be flipped relative to the box body; the hinge assembly includes: A first hinge member is provided on the box body and is close to the side wall of the first body; the first hinge member includes: a hinge plate connected to the box body; A first hinge axis and a second hinge axis are provided on the hinge plate; the first hinge axis is located where the second hinge axis is close to the side wall of the first body; A second hinge member is provided on the door body; the second hinge member comprises: A first track groove and a second track groove; wherein the first hinge shaft cooperates with the first track groove, and the second hinge shaft cooperates with the second track groove, so that the door body moves relative to the box body; A gravity self-closing structure is located on the lower side of the door body; the gravity self-closing structure includes: A movable part is located at the lower end of the door body; the movable part includes: a second guide portion, which is provided at the lower end portion of the door body; A fixing member connected to the hinge plate located on the lower side of the door body; the fixing member includes: a first guide portion, which is used to cooperate with the second guide portion to enable the door body to move along the height direction of the box body in a direction away from the top wall of the box body under the action of its gravity; a supporting portion, which cooperates with the movable member to support the door body; a first through hole passing through the support portion; the first hinge shaft passes through the first through hole; a second through hole passing through the fixing member; the second hinge shaft passing through the second through hole; a distance between the first guide portion and the first hinge shaft being greater than a distance between the first guide portion and the second hinge shaft; The plane where the first through hole passes through the support portion and is away from the opening of one end of the hinge plate is recorded as the first plane, and the plane where the second through hole is away from the opening of one end of the hinge plate is recorded as the second plane; the end surface of the fixing member close to the hinge plate is recorded as the fixing mating surface; The distance between the second plane and the fixed mating surface is recorded as X1; The distance between the first plane and the fixed mating surface is recorded as X2; wherein X1 <X2; During the process of the door body closing from an open state and the first guide portion interacting with the second guide portion, the first plane of the support portion cooperates with the movable part, the support portion supports the door body, and the second plane does not interact with the door body.

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