Refrigerator

Abstract

The refrigerator 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, a fixed piece located on the second hinge piece and matched with the movable piece, and a rolling piece arranged on the side, away from the top wall of the refrigerator body, of the first hinge piece. The fixing piece comprises a supporting part used for being matched with the movable plate to support the door body. In the height direction of the box body, a point, which is the largest distance from the top wall of the box body, on the rolling piece is marked as a first point F1; the point where the distance between the supporting part and the top wall of the box body is the smallest is marked as a second point F2; in the height direction of the box body, the distance between the first point F1 and the second point F2 is recorded as W; 32 mm < = W < = 36 mm; according to the utility model, the occupied space of a part on one side of the bottom wall of the box body far away from the top wall is reduced to enlarge the height space of the box body and enlarge the volume of the accommodating cavity of the box body.

Description

Technical Field

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

[0002] Currently, in order to meet the requirements of embedding, a double shaft is mostly arranged on one of the door and the box body, and a guiding structure cooperating with the double shaft is arranged on the other to control the door to move inwards while rotating and opening, so as to meet the installation requirements of embedding. With the combination of the double shaft and the guiding structure, the door moves inwards during the opening process to ensure that the corners of the door body do not exceed the size of the box body too much during the door opening process.

[0003] In order to ensure the sealing performance between the door body and the box body when the door body is closed, a gravity self-closing structure is arranged to make the door body have a tendency of automatic closing in the last stage of closing by using the self-gravity of the door body, so that the door body keeps a tendency of approaching the box body, thereby making the door body seal the box body.

[0004] To meet the requirements of the height of the refrigerator for the height of the target users, the maximum height of the refrigerator is limited, resulting in the limitation of the height dimension of the box body, and further resulting in the limitation of the volume of the accommodation cavity defined by the box body.

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

[0006] This application provides a refrigerator, which reduces the space occupied by the components on the side of the bottom wall of the box body far from the top wall, so as to increase the height space of the box body and the volume of the accommodation cavity of the box body.

[0007] A refrigerator provided by this application includes:

[0008] A box body that defines a plurality of accommodation cavities;

[0009] A door body rotatably arranged on the box body to close or open the accommodation cavity;

[0010] A hinge assembly connecting the door body and the box body to enable the door body to flip relative to the box body; the hinge assembly includes:

[0011] A first hinge member arranged on the box body; the first hinge member includes:

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

[0013] A first hinge shaft and a second hinge shaft arranged on the hinge plate;

[0014] A second hinge member arranged on the door body; the second hinge member includes:

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

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

[0017] A movable member, which is provided at the lower end of the door body;

[0018] A fixed member, which is connected to a hinge plate located at the lower side of the door body; the fixed member interacts with the movable member, so that the door body moves in the height direction of the box body away from the top wall of the box body under the action of its own gravity; the fixed member includes:

[0019] A support portion, which is engaged with the movable member to support the door body;

[0020] A rolling member, which is provided on the side of the hinge plate located at the lower side of the door body away from the top wall of the box body;

[0021] In the height direction of the box body, the point on the rolling member with the maximum distance from the top wall of the box body is denoted as the first point F1; the point on the support portion of the fixed member with the minimum distance from the top wall of the box body is denoted as the second point F2;

[0022] In the height direction of the box body, the distance between the first point F1 and the second point F2 is denoted as W; wherein, 32mm ≤ W ≤ 36mm.

[0023] In the above technical solution, 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 in the height direction of the box body to increase the volume of the accommodation cavity.

[0024] To meet the height requirements of the refrigerator for the height of the refrigerator audience, the maximum height of the refrigerator is limited.

[0025] When 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 body away from the top wall in the height direction of the box body, resulting in a decrease in the distance between the bottom wall of the box body and the top wall of the box body, and ultimately resulting in a decrease in the accommodation cavity in the box body.

[0026] When W < 32mm, W is too small, then the dimensions of the components (fixed member, backing plate, hinge plate and rolling member) between the first point F1 and the second point F2 are limited and correspondingly reduced, resulting in a reduction in the strength of at least one of the fixed member, backing plate, hinge plate and rolling member with reduced dimensions, and unable to meet the product quality requirements.

[0027] In some embodiments of the present application, the plane on the supporting part for cooperating with the movable part is the first plane; the second point F2 is located on the first plane;

[0028] The end face of the fixing part close to the hinge plate is denoted as the fixed mating surface;

[0029] Along the height direction of the box body, the distance from the first plane to the fixed mating surface is denoted as W G , 6 mm ≤ W G ≤ 8 mm.

[0030] In the above technical solution, the setting of 6 mm ≤ W G ≤ 8 mm ensures that the fixing part has sufficient strength and reduces the space occupied by the fixing part along the central axis direction of the first hinge axis.

[0031] To meet the height requirements of the refrigerator for the height of the refrigerator audience, the maximum height of the refrigerator is limited.

[0032] W G > 8 mm, W G is too large, which will lead to too large W, resulting in an increase in the space occupied by the components on the side of the bottom wall of the box body away from the top wall, a decrease in the distance between the bottom wall and the top wall of the box body, and ultimately a decrease in the accommodation cavity in the box body.

[0033] W G < 6 mm, W G is too small, and the strength of the fixing part is too poor to support the box body, and the product quality is unqualified.

[0034] In some embodiments of the present application, along the height direction of the box body, the thickness of the hinge plate is denoted as W J , 4 mm ≤ W J ≤ 5 mm.

[0035] In the above technical solution, the setting of 4 mm ≤ W J ≤ 5 mm ensures that the hinge plate has sufficient strength and reduces the space occupied by the hinge plate along the central axis direction of the first hinge axis.

[0036] To meet the height requirements of the refrigerator for the height of the refrigerator audience, the maximum height of the refrigerator is limited.

[0037] W J > 5 mm, W J is too large, which will lead to too large W, resulting in an increase in the space occupied by the components on the side of the bottom wall of the box body away from the top wall, a decrease in the distance between the bottom wall and the top wall of the box body, and ultimately a decrease in the accommodation cavity in the box body.

[0038] W J < 4 mm, W JToo small, the strength of the hinge plate is too poor to support the box body, and the product quality is unqualified.

[0039] In some embodiments of the present application, the refrigerator further includes:

[0040] A height adjustment component for adjusting the height of the door body relative to the box body; the height adjustment component includes:

[0041] A backing plate provided between the hinge plate and the fixing member;

[0042] A height adjustment bolt passing through the hinge plate and capable of moving relative to the hinge plate along the central axis of the height adjustment bolt; the height adjustment bolt is located on the side of the backing plate away from the fixing member;

[0043] A first guide post provided at an end of the first hinge shaft close to the hinge plate;

[0044] A second guide post provided at an end of the second hinge shaft close to the hinge plate;

[0045] Wherein, the backing plate and the fixing member are sleeved on the first guide post and the second guide post;

[0046] Wherein, in the plane projection perpendicular to the central axis of the height adjustment bolt, the central axes of the first guide post, the second guide post, and the central axis of the height adjustment bolt are not on the same straight line;

[0047] Adjusting the position of the height adjustment bolt relative to the hinge plate, the height adjustment bolt drives the backing plate and the fixing member to move along the first guide post and the second guide post, and drives the door body to move along the central axis of the height adjustment bolt.

[0048] In the above technical solution, through the surface contact support of the height adjustment bolt and the backing plate, under the guiding action of the first guide post and the second guide post on the backing plate, the two-dimensional plane movement of the backing plate, etc. 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 of the height adjustment bolt and the backing plate, combined with the guiding of the first guide post and the second guide post on the backing plate, the backing plate can move smoothly and without tilting along the central axis of the height adjustment bolt, and it can be avoided that the backing plate interacts with the first guide post and / or the second guide post due to tilting during the movement, resulting in jamming and failure of height adjustment, thereby avoiding the inclination of the adjusted backing plate (fixing member) and causing the inclination of the adjusted door body, resulting in excessive stress when the gravity self-closing structure of the door body interacts.

[0049] In some embodiments of the present application, along the height direction of the box body, the thickness of the backing plate is denoted as W D , 2.5 mm ≤ W D ≤ 5 mm.

[0050] In the above technical solution, 2.5 mm ≤ W D ≤ 5 mm ensures that the backing plate, the backing plate and the first fastener and / or the second fastener have sufficient strength, and reduces the space occupied by the backing plate along the central axis direction of the first hinge axis.

[0051] W D > 5 mm, W D is too large, resulting in an increase in the space occupied by the components on the side of the bottom wall of the box body away from the top wall, resulting in a decrease in the distance between the bottom wall and the top wall of the box body, and ultimately resulting in a decrease in the accommodation cavity in the box body.

[0052] W D < 2.5 mm, W D is too small, the depths of the first connection hole and the second connection hole on the backing plate are reduced, the length of the threaded connection between the first connection hole and the second fastener and the connection length between the second connection hole and the first fastener, and the connection strength between the fixing member connected by the second fastener and the first fastener and the backing plate is poor.

[0053] In some embodiments of the present application, the hinge plate includes:

[0054] A second plate portion connected to the box body;

[0055] A first plate portion extending forward from the second plate portion;

[0056] A third plate portion including a relatively arranged first connection end and a second connection end; wherein, the first connection end is located on the side of the second connection end away from the top wall of the box body;

[0057] The first connection end of the third plate portion is connected to the first plate portion, and the second connection end of the third plate portion is connected to the second plate portion;

[0058] Wherein, the first hinge axis and the second hinge axis are arranged on the first plate portion; the backing plate is installed on the first plate portion, and the fixing member is installed on the side of the backing plate away from the first plate portion;

[0059] The rolling member is installed on the second plate portion and is at least partially located on the side of the second plate portion away from the bottom wall of the box body.

[0060] In the above technical solution, with the above arrangement of the hinge plate, the distance between the first plate portion and the bottom wall of the box body is increased to leave more height space for installing the backing plate and the fixing member. To ensure the thickness dimensions of the backing plate and the fixing member and meet the strength requirements.

[0061] In addition, the second plate portion cooperates with the bottom wall of the box body. The space on the side of the second plate portion away from the bottom of the box body is large, increasing the height space for installing the rolling members, enabling the installation of rolling members with a larger diameter, and ensuring that the installed rolling members meet the strength requirements.

[0062] In some embodiments of the present application, in the height direction of the box body, the distance between the first plate portion and the second plate portion is denoted as the first folding height W F , where 1 mm ≤ W F ≤ 2 mm.

[0063] In the above technical solution, 1 mm ≤ W F ≤ 2 mm can ensure that the backing plate and the fixing member effectively support the door body, and reduce the overall space occupied in the height direction of the box body, so as to increase the volume of the accommodation cavity of the box body.

[0064] W F > 2 mm, the first folding height W F is too large, resulting in an excessive downward displacement of the positions of the backing plate and the fixing member, and unable to effectively support the door body. If it is necessary to ensure the support for the door body, it is necessary to increase the thickness of the backing plate and the fixing member, which will result in an overall excessive size between the first point F1 and the second point F2, reducing the volume of the accommodation cavity of the box body. In addition, it requires rolling members with a larger diameter so that the lowest point of the rolling members is located below the first plate portion to ensure the effective rolling action of the rolling members, which will cause the box body to be lifted and reduce the accommodation space of the box body.

[0065] W F < 1 mm, the first folding height W F is too small, unable to effectively utilize the height space, the height dimensions occupied by the backing plate and the fixing member increase, the height space occupied by the rolling members increases, resulting in an overall excessive size between the first point F1 and the second point F2, reducing the accommodation space of the box body.

[0066] In some embodiments of the present application, the second plate portion is provided with mounting holes; a ring convex is formed by protruding from the edge of the mounting hole toward the side away from the backing plate;

[0067] The rolling member includes a rotating shaft and a rolling body that rotates around the rotating shaft;

[0068] The opposite ends of the rotating shaft of the rolling member are fixedly connected to the ring convex, and the rolling body is located on the side of the surface of the hinge plate close to the backing plate away from the backing plate;

[0069] In the projection on the plane of the rear wall of the box body, the projection of the rolling body at least partially coincides with the projection of the second plate portion.

[0070] In the above technical solution, the above settings can make full use of the thickness dimension space of the hinge plate, reduce the dimension from the hinge plate to the lowest point (F2) of the rolling member away from the backing plate, thereby reducing the height of the box body, and further increasing the accommodation cavity of the box body.

[0071] In some embodiments of the present application, the height-adjusting bolt is arranged on the first plate portion;

[0072] A foot pad is arranged on the side of the hinge plate away from the backing plate;

[0073] The foot pad is located on the side of the height-adjusting bolt away from the first body side wall of the box body and the plane of the rear wall of the box body;

[0074] The rolling member is located on the side of the height-adjusting bolt close to the rear wall of the box body.

[0075] In the above technical solution, the adjusting portion of the height-adjusting bolt located on the side of the hinge plate away from the backing plate is close to the first body side wall and is not blocked by the foot pad, the rolling member, etc., which is convenient for the user to apply an action to the adjusting portion from the side of the first body side wall of the box body for height adjustment.

[0076] The embodiments of the present application also propose another refrigerator, including:

[0077] A box body that defines a plurality of accommodation cavities;

[0078] A door body that is rotatably arranged on the box body to close or open the accommodation cavity;

[0079] A hinge assembly that connects the door body to the box body to enable the door body to flip relative to the box body; the hinge assembly includes:

[0080] A first hinge member that is arranged on the box body; the first hinge member includes:

[0081] A hinge plate that is connected to the box body;

[0082] A first hinge shaft and a second hinge shaft that are arranged on the hinge plate;

[0083] A second hinge member that is arranged on the door body; the second hinge member includes:

[0084] 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 to enable the door body to move relative to the box body;

[0085] A gravity self-closing structure that is located on the lower side of the door body; the gravity self-closing structure includes:

[0086] A movable member that is arranged at the lower end of the door body;

[0087] A fixing member, which is connected to a hinge plate located on the lower side of the door body; the fixing member interacts with the movable member to enable the door body to move in the height direction of the cabinet away from the top wall of the cabinet under the action of its gravity; the fixing member includes:

[0088] A supporting portion, which cooperates with the movable member to support the door body;

[0089] A rolling member, which is arranged on the side of the hinge plate located on the lower side of the door body away from the top wall of the cabinet;

[0090] In the height direction of the cabinet, the point on the rolling member with the maximum distance from the top wall of the cabinet is denoted as the first point F1; the point on the supporting portion of the fixing member with the minimum distance from the top wall of the cabinet is denoted as the second point F2;

[0091] In the height direction of the cabinet, the distance between the bottom wall of the cabinet and the first point F1 is denoted as W1; wherein, 22mm ≤ W1 ≤ 28mm;

[0092] In the height direction of the cabinet, the distance between the second point F2 and the hinge plate is denoted as W2; wherein, 8mm ≤ W2 ≤ 12mm.

[0093] In the above technical solution, to meet the height requirements of the refrigerator for the height of the refrigerator audience, the maximum height of the refrigerator is restricted.

[0094] If 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 cabinet away from the top wall in the height direction of the cabinet, a decrease in the distance between the bottom wall of the cabinet and the top wall of the cabinet, and ultimately a decrease in the accommodation cavity in the cabinet.

[0095] If W1 < 22mm, W1 is too small, then the sizes of the components (hinge plate and rolling member) between the bottom wall of the cabinet and the first point F1 are limited and correspondingly reduced, resulting in a reduction in the strength of at least one of the hinge plate and the rolling member with a reduced size, and the product quality requirements cannot be met.

[0096] 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 in the height direction of the cabinet to increase the volume of the accommodation cavity.

[0097] If W2 > 12mm, W2 is too large, resulting in an increase in the space occupied by the components on the side of the lower end wall of the door body away from its top wall in the height direction of the cabinet, a decrease in the height of the door body, a decrease in the height of the access opening of the accommodation cavity that it can close or open, and ultimately a decrease in the accommodation cavity in the cabinet.

[0098] If W2 < 8 mm, i.e., W2 is too small, the dimensions of the components (fasteners, backing plates) between the lower end wall of the door body (the second point F2) and the hinge plate are limited and correspondingly reduced, resulting in a decrease in the strength of at least one of the fasteners and backing plates, which cannot meet the product quality requirements.

[0099] The setting of 8 mm ≤ W2 ≤ 12 mm not only ensures the strength of each component to meet the product quality requirements but also reduces the space occupied in the height direction of the cabinet to increase the volume of the accommodation cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0100] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0101] Figure 1 is a schematic diagram of the overall structure of a refrigerator according to an exemplary embodiment;

[0102] Figure 2 is a schematic diagram of the structure of the hinge assembly area at the lower end of the door body of the refrigerator according to an exemplary embodiment;

[0103] Figure 3 is a schematic diagram of the gravity self-closing structure of the refrigerator according to an exemplary embodiment;

[0104] Figure 4 is a schematic diagram of another perspective of the gravity self-closing structure of the refrigerator according to an exemplary embodiment;

[0105] Figure 5 is a cross-sectional view of the gravity self-closing structure of the refrigerator according to an exemplary embodiment;

[0106] Figure 6 is an exploded view of the gravity self-closing structure of the refrigerator according to an exemplary embodiment;

[0107] Figure 7 is an exploded view of another perspective of the gravity self-closing structure of the refrigerator according to an exemplary embodiment;

[0108] Figure 8 is an exploded view of the fasteners, backing plates, and second hinge members of the refrigerator according to an exemplary embodiment;

[0109] Figure 9 is an exploded view of another perspective of the fasteners, backing plates, and second hinge members of the refrigerator according to an exemplary embodiment;

[0110] Figure 10 Schematic diagram of the assembly structure of the fixing part, backing plate and second hinge part of the refrigerator according to an exemplary embodiment;

[0111] Figure 11 Schematic diagram of the assembly structure of the fixing part, backing plate and second hinge part of the refrigerator from another perspective according to an exemplary embodiment;

[0112] Figure 12 Cross-sectional view of the assembly structure of the fixing part, backing plate and second hinge part of the refrigerator according to an exemplary embodiment;

[0113] Figure 13 For Figure 12 Another perspective view of the cross-sectional view;

[0114] Figure 14 Another cross-sectional view of the assembly structure of the fixing part, backing plate and second hinge part of the refrigerator according to an exemplary embodiment;

[0115] Figure 15 For Figure 14 Another perspective view of the cross-sectional view;

[0116] Figure 16 Another cross-sectional view of the assembly structure of the fixing part, backing plate and second hinge part of the refrigerator according to an exemplary embodiment;

[0117] Figure 17 Exploded view of the height-adjusting bolt and the limiting gasket of the refrigerator according to an exemplary embodiment;

[0118] Figure 18 Another perspective exploded view of the height-adjusting bolt and the limiting gasket of the refrigerator according to an exemplary embodiment;

[0119] Figure 19 Schematic diagram of the relative positions of the hinge plate, first hinge shaft, second hinge shaft and height-adjusting bolt of the refrigerator according to an exemplary embodiment;

[0120] Figure 20 Schematic diagram of the relative positions of the rolling element and the hinge plate of the refrigerator according to an exemplary embodiment;

[0121] Figure 21 Schematic diagram of the structure of the hinge assembly area at the upper end of the door body of the refrigerator according to an exemplary embodiment;

[0122] Figure 22 Exploded view of the hinge assembly at the upper end of the door body of the refrigerator according to an exemplary embodiment;

[0123] Figure 23 Schematic diagram of the structure of the second hinge part at the upper end of the door body of the refrigerator according to an exemplary embodiment;

[0124] Figure 24 It is a schematic structural diagram of another perspective of the second hinge member located at the upper end of the door body of the refrigerator according to an exemplary embodiment;

[0125] Figure 25 It is a cross-sectional view of the second hinge member located at the upper end of the door body of the refrigerator according to an exemplary embodiment;

[0126] In the above figures:

[0127] Refrigerator 100; Cabinet 1; Door body 3; Front door wall 31; Rear door wall 32; Door side wall 33; First side edge W; Second side edge N;

[0128] Hinge plate 4; First plate portion 41; Second plate portion 42; Mounting hole 421; Ring convex 422; Connecting plate 423;

[0129] Third plate portion 43; First hinge hole 44; Second hinge hole 45; Adjusting hole 46;

[0130] First hinge shaft 5; First guide post 50; Second hinge shaft 6; Second guide post 60;

[0131] First track groove 7; First groove bottom 70; First groove wall 71; First groove opening 72;

[0132] 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 body 86;

[0133] Fixing member 200; Fixing plate 210; First through hole 211; Second through hole 212; First avoiding recess 213; First counterbore 214; Second counterbore 215; First fixing hole 216; Second fixing hole 217; Second mating recess 218; First guiding portion 220; First inclined surface 221; Second inclined surface 222; First convex portion 223; Supporting portion 230; Fixing mating surface 240; First plane 250; Second plane 260;

[0134] Movable member 300; Movable plate 310; Second guiding portion 320; Third inclined surface 321; Fourth inclined surface 322; Second convex portion 323; Spacer 400; First guiding hole 401; Second guiding hole 402; First connecting hole 403; Second connecting hole 404; First mating recess 405; Limiting convex portion 406;

[0135] First fastener 91; First limiting portion 911; Limiting retaining ring 912; Second fastener 92; Second limiting portion 921;

[0136] Heightening bolt 2; Threaded section 21; Top plate 22; Mounting portion 23; Adjusting portion 24; Clamping portion 25;

[0137] Height-limiting gasket 10; Foot pad 11; Rolling member 12; Mounting block 13. Specific implementation manner

[0138] Next, the present utility model will be specifically described through exemplary implementation manners. However, it should be understood that without further narration, the elements, structures, and features in one implementation manner can also be beneficially combined into other implementation manners.

[0139] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0140] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0141] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0142] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0143] The embodiment of the present application provides a refrigerator 100, refer to Figures 1 - 25 , the refrigerator 100 includes a box body 1 having a receiving cavity, a door body 3 connected to the box body 1 to open and close the receiving cavity, and a refrigeration device for supplying cold air to the receiving cavity. The box body 1 includes an inner liner defining the receiving cavity, a housing connected to the outside of the inner liner to form the appearance of the refrigerator 100, and a heat insulation layer disposed between the inner liner and the housing to insulate the receiving cavity.

[0144] Among them, referring to 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.

[0145] In the embodiments of the present application, the box body 1 defines a plurality of accommodation cavities.

[0146] A pick-and-place opening for picking and placing items is formed at the front end of the accommodation cavity. Users can place food into the accommodation cavity or take out food from the accommodation cavity through the pick-and-place opening. A rotatable door body 3 is provided on the box body 1 to open or close the pick-and-place opening of the accommodation cavity. For example, the door body 3 is rotatably connected to the box body 1 by a hinge assembly located at the upper part of the refrigerator 100 and a hinge assembly located at the lower part of the refrigerator 100.

[0147] In some embodiments of the present application, the plurality of accommodation cavities may include a refrigerating chamber and a freezing chamber.

[0148] 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 box body 1. The freezing chamber extends along the height direction of the box body 1.

[0149] In some embodiments of the present application, two door bodies 3 are provided on the box body 1. The two door bodies 3 are a refrigerating door and a freezing door respectively. Among them, the refrigerating door is used to open or close the refrigerating chamber, and the freezing door is used to open or close the freezing chamber. When the refrigerating door and the freezing door are both closed, the front wall 31 of the refrigerating door and the front wall 31 of the freezing door together form the front wall of the refrigerator 100.

[0150] With the above arrangement of two accommodation cavities along the width direction of the refrigerator 100, the volume and weight of the door body 3 corresponding to each accommodation cavity are large, and it is easy for the door body 3 to sink. And when adjusting the height of the sunken door body 3, it is difficult to lift it up manually.

[0151] The box body 1 includes a first body side wall (i.e., one of the left side wall and the right side wall of the box body 1) and a second body side wall (i.e., the other of the left side wall and the right side wall of the box body 1) that are oppositely arranged along its width direction. The hinge assembly is provided on the box body 1 and is close to the first body side wall to connect the door body 3 close to the first body side wall to the box body 1, so that the door body 3 can rotate relative to the box body 1 to open or close.

[0152] The door body 3 has a front wall 31 that is far from the box body 1 when the door body 3 is closed, a door rear wall 32 that is oppositely arranged to the front wall 31, and a door side wall 33 that is close to the hinge assembly and is connected to the front wall 31. For example, when the hinge assembly is located on the right side of the box body 1, the right side wall of the door body 3 is the door side wall 33. When the hinge assembly is located on the left side of the box body 1, the left side wall of the door body 3 is the door side wall 33.

[0153] In some embodiments of the present application, the door side wall 33 is connected to the front door wall 31 and is close to the rotation axis of the door body 3.

[0154] The front door wall 31 and the door side wall 33 of the door body 3 intersect to form a first side edge W, and the door side wall 33 and the rear door 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 away from the box body 1 of the second side edge N.

[0155] It should be noted that when both the front door wall 31 and the door side wall 33 are flat wall surfaces, the intersection line of the plane where the front door wall 31 is located and the plane where the door side wall 33 is located is the first side edge W. When the intersection of the front door wall 31 and the door side wall 33 is provided with a rounded corner transition, a curved surface extending along the height direction of the door body 3 (i.e., the height direction as shown in Figure 1 is formed. For the convenience of description, any straight line extending along the height direction of the door body 3 on this curved surface represents the first side edge W. Similarly, when the intersection of the rear door wall 32 and the door side wall 33 is provided with a rounded corner transition, the intersection line of the planes where the rear door wall 32 and the door side wall 33 are located can be used to represent the second side edge N, or a straight line close to and parallel to this intersection line can be used to represent the second side edge N.

[0156] In some embodiments of the present application, a door seal is provided on the rear wall of the door body 3. Among them, the door seal surrounds the access opening. When the door body 3 is closed, the door seal fits against the front end surface of the box body 1 to effectively seal the connection between the door body 3 and the box body 1, so as to ensure that the door body 3 seals the access opening and prevent cold air from leaking out.

[0157] 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 part and a hinge assembly located at the lower part.

[0158] In some embodiments of the present application, the hinge assembly includes a first hinge member and a second hinge member, and the first hinge member cooperates with the second hinge member and can rotate relative to each other.

[0159] In some embodiments of the present application, referring to Figures 2 - 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. Among them, 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 through fasteners such as screws, pins and bolts.

[0160] 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 face of the box body 1. Among them, the first hinge member includes a first hinge shaft 5 and a second hinge shaft 6 provided on the first plate portion 41. Among them, the second hinge shaft 6 is located on the side of the first hinge shaft 5 away from the first body side wall. Among them, 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.

[0161] The second hinge member includes a guiding portion and a guiding part located at the end of the door body 3 close to the first hinge member. Among them, the first hinge shaft 5 is adapted to the guiding portion, and the second hinge shaft 6 is adapted to the guiding part. During the process of the door body 3 rotating open or closed, the first hinge shaft 5 moves relative to the guiding portion, and the second hinge shaft 6 moves relative to the guiding part.

[0162] In some embodiments of the present application, the guiding part is located on the side of the guiding portion away from the first side edge.

[0163] In some embodiments of the present application, the first hinge shaft 5 moves relative to the door body 3 under the guiding action of the guiding portion, and the second hinge shaft 6 moves relative to the door body 3 under the guiding action of the guiding part.

[0164] The first hinge shaft 5 and the second hinge shaft 6 of the first hinge member are connected to the box body 1 through the hinge plate 4 to form a limiting shaft for guiding the movement of the door body 3. Specifically, the first hinge shaft 5 extends along the height direction of the box body 1 to be adapted to the guiding portion provided on the door body 3. The second hinge shaft 6 extends along the height direction of the box body 1 to be adapted to the guiding part provided on the door body 3.

[0165] The guiding portion has a guiding track line. During the process of the door body 3 opening or closing, the central axis of the first hinge shaft 5 moves relative to the guiding track line of the guiding portion.

[0166] The guiding part has a guiding track line. During the process of the door body 3 opening or closing, the central axis of the second hinge shaft 6 moves relative to the guiding track line of the guiding part.

[0167] The guiding track line is located on the side of the guiding track line away from the first side edge W. The length of the guiding track line is greater than the length of the guiding track line.

[0168] In some embodiments of the present application, the guiding portion is set as the first track groove 7, and the guiding part is set as the second track groove 8.

[0169] In some other embodiments of the present application, the guiding track line is a curve, and the guiding track line is a curve; during the process of the door body 3 opening or closing, the first hinge shaft 5 makes a curvilinear motion relative to the door body 3 under the guiding action of the guiding portion, and the second hinge shaft 6 makes a curvilinear motion relative to the door body 3 under the guiding action of the guiding part.

[0170] 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 one 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 the length of the second track groove 8.

[0171] In some embodiments of the present application, the first track groove 7 includes a straight groove section and a curved groove section located on the side of the straight groove section close to the door side wall 33. Along the direction from one end of the door body 3 opposite to the door side wall 33 to the door side wall 33, the distance between the curved groove section and the door side wall 33 decreases. The curved groove section protrudes towards the second side edge N.

[0172] In some embodiments of the present application, the straight groove section is parallel to the front wall 31 of the door.

[0173] It should be noted that the specific extension trends of the guiding part and the guiding portion are not limited to the above limitations.

[0174] Corresponding to the position of the hinge plate 4, the first track groove 7 and the second track groove 8 are provided at both the upper and lower ends of the door body 3. Exemplarily, the positions of the two first track grooves 7 at the upper and lower ends of the door body 3 correspond to each other in the height direction of the refrigerator 100, and the positions of the two second track grooves 8 correspond to each other in the height direction of the refrigerator 100, so that the movements of the upper and lower ends of the door body 3 are consistent, thereby making the opening or closing of the door body 3 smoother.

[0175] In this embodiment, continue to refer to Figure 2 , the plane where the side wall (i.e., the first body side wall) of the cabinet 1 close to the hinge plate 4 is defined as the reference plane M0. When the refrigerator 100 is received in the cabinet, the side close to the cabinet of the reference plane M0 is defined as the outer side, and the side close to the accommodation cavity opposite thereto is defined as the inner side.

[0176] It can be understood that in order to enable the door body 3 of the refrigerator 100 to be opened normally, during the rotation of the door body 3, the first side edge W cannot protrude too much beyond the reference plane M0 to avoid the first side edge W colliding with the cabinet and causing the door body 3 to be unable to be opened normally.

[0177] In summary, if the door body 3 can move inward during rotation, the first side edge W will not protrude too much beyond the reference plane M0. For example, when the hinge plate 4 is provided on the right side of the door body 3, the inner side is the left side of the reference plane M0, then the door body 3 needs to move to the left during rotation. When the hinge plate 4 is provided on the left side of the door body 3, the inner side is the right side of the reference plane M0, then the door body 3 needs to move to the right during rotation.

[0178] Refer to Figure 2 and Figure 7, in some embodiments, the refrigerator 100 further includes a gravity self-closing structure, and the gravity self-closing structure can be disposed at the lower end of the door body 3.

[0179] In some embodiments of the present application, the gravity self-closing structure may include a cooperating fixed member 200 and a movable member 300. Among them, the fixed member 200 can be fixedly disposed on the cabinet 1, the movable member 300 can be fixedly disposed on the door body 3, and the movable member 300 and the fixed member 200 can be arranged along the height direction of the cabinet 1.

[0180] 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 cabinet 1 through the gravity self-closing structure, realizing the automatic closing of the door body 3, so that the door body 3 can abut against the cabinet 1 in the closed state, reducing the gap between the door body 3 and the cabinet 1.

[0181] Refer to Figure 6 , the fixed 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. Among them, the first hinge shaft 5 passes through the first through hole 211, and the second hinge shaft 6 passes through the second through hole 212.

[0182] The fixed member 200 includes a first guiding portion 220. The first guiding portion 220 is located on the surface of the fixing plate 210 facing the movable member 300. The first guiding portion 220 includes a first inclined surface 221 and a second inclined surface 222. Among them, the first end of the first inclined surface 221 is connected to the first part of the fixing plate 210. The second end of the first inclined surface 221 is farther away from the fixing plate 210 than the first end of the first inclined surface 221.

[0183] The first end of the second inclined surface 222 is connected to the second part 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 of the second inclined surface 222.

[0184] The second inclined surface 222 is located on the side of the first inclined surface 221 away from the cabinet 1. The first end of the second inclined surface 222 is located on the side of the first end of the first inclined surface 221 away from the cabinet 1.

[0185] 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.

[0186] A first convex portion 223 with the maximum distance from the fixing plate 210 is formed at the connection between 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 transitionally connected, so that the relative movement between the fixing member 200 and the movable member 300 is smoother.

[0187] In some embodiments of the present application, the movable member 300 includes a movable plate 310.

[0188] Referring to Figure 7 , the movable member 300 includes a second guiding portion 320. The second guiding portion 320 is located on the surface of the movable plate 310 facing the fixing member 200.

[0189] The second guiding portion 320 includes a third inclined surface 321 and a fourth inclined surface 322. Among them, the first end of the third inclined surface 321 is connected to the first part of the movable plate 310. The second end of the third inclined surface 321 is away from the movable plate 310 relative to the first end of the third inclined surface 321.

[0190] The first end of the fourth inclined surface 322 is connected to the second part 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 away from the movable plate 310 relative to the first end of the fourth inclined surface 322.

[0191] The fourth inclined surface 322 is located on the side of the third inclined surface 321 close to the front door wall 31. The first end of the fourth inclined surface 322 is located on the side of the first end of the third inclined surface 321 close to the front door wall 31.

[0192] 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.

[0193] A second convex portion 323 with the maximum distance from the movable plate 310 is formed at the connection between 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 transitionally connected, so that the relative movement between the fixing member 200 and the movable member 300 is smoother.

[0194] In the above technical solutions, the specific setting forms of the first guiding portion and the second guiding portion are defined, and the structure is simple and easy to form; the setting of the inclined surfaces makes the interaction between the first guiding portion and the second guiding portion smoother and more fluent.

[0195] When the door body 3 closes from the open state, as the opening angle of the door body 3 gradually decreases, the second guiding part 320 gradually approaches the first guiding part 220. When the second guiding part 320 contacts the first guiding part 220, the third inclined surface 321 of the second guiding part 320 contacts the second inclined surface 222 of the first guiding part 220.

[0196] The door body 3 continues to close, and the third inclined surface 321 of the second guiding part 320 cooperates with the second inclined surface 222 of the first guiding part 220. The third inclined surface 321 of the second guiding part 320 moves relative to the second inclined surface 222 of the first guiding part 220 in a direction approaching the first inclined surface 221, and the second convex part 323 gradually approaches the first convex part 223. As the door body 3 closes, the distance between the second inclined surface 222 cooperating 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 gradually increases, and the distance between the fixed plate 210 and the movable plate 310 gradually increases, driving the door body 3 fixedly connected to the movable plate 310 to move away from the fixed plate 210 (upward). During the above process, as the door body 3 moves upward, the self - gravity of the door body 3 does negative work, and the gravitational potential energy of the door body 3 increases.

[0197] When the second convex part 323 of the second guiding part 320 cooperates with the first convex part 223 of the first guiding part 220, the distance that the second guiding part 320 moves away from the movable plate 310 reaches the maximum, and the height that the door body 3 moves upward reaches the maximum.

[0198] As the door body 3 continues to close, the second convex part 323 of the second guiding part 320 gradually moves away from the first convex part 223 of the first guiding part 220, and the fourth inclined surface 322 of the second guiding part 320 cooperates with the first inclined surface 221 of the first guiding part 220. Under the action of the gravity of the door body 3, the fourth inclined surface 322 of the second guiding part 320 moves relative to the first inclined surface 221 of the first guiding part 220 in a direction away from the second inclined surface 222. As the door body 3 continues to close, the distance between the first inclined surface 221 cooperating 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 gradually decreases, and the distance between the fixed plate 210 and the movable plate 310 gradually decreases, driving the door body 3 of the movable plate 310 to move closer to the fixed plate 210 (downward). During the above process, the gravitational potential energy of the door body 3 decreases, and its gravitational potential energy is converted into kinetic energy, causing the door body 3 to automatically move downward to achieve the automatic closing of the door body 3.

[0199] During the process that the second convex part 323 of the second guiding part 320 gradually moves away from the first convex part 223 of the first guiding part 220, under the action of the gravity of the door body 3, the fourth inclined surface 322 and the first inclined surface 221 slide relatively, causing the door body 3 to gradually approach the box body 1, so that the door body 3 can be automatically closed under its own gravity.

[0200] In some embodiments of the present application, the first track groove 7 and the second track groove 8 located at the lower end of the door body 3 are formed on the movable plate 310. The second guiding part 320 is located on one side of the second track groove 8 away from the first track groove 7.

[0201] 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 guiding part 320 from the first end of the third inclined surface 321 through the second end 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 part of the second track groove 8 close to the second guiding part 320.

[0202] 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 settings in the present application make the movement trend of the second guiding part 320 relative to the first guiding part 220 synchronous with the movement trend of the second hinge shaft 6 relative to the second track groove 8 during the interaction process of the second guiding part 320 and the first guiding part 220, so as to form an organic unity with the movement of the first hinge shaft 5 relative to the first track groove 7 in this process, ensuring that the gravity self-closing structure can effectively play its role while the door body rotates and opens and has a displacement in the width direction of the box body 1 during the action of the above gravity self-closing structure.

[0203] Refer to Figures 2 - 16 , in some embodiments of the present application, the refrigerator includes a height adjustment component for adjusting the height of the door body 3 relative to the box body 1.

[0204] In some embodiments of the present application, the height adjustment component includes a backing plate 400, and the backing plate 400 is arranged between the hinge plate 4 and the fixed plate 210. The material of the backing plate 400 can be a metal with a relatively high hardness such as steel.

[0205] In some embodiments of the present application, one side of the fixed plate 210 away from the movable plate 310 cooperates with the backing plate 400. One side of the backing plate 400 away from the fixed plate 210 cooperates with the hinge plate 4.

[0206] In some embodiments of the present application, the backing plate 400 is provided with a first guiding hole 401 and a second guiding hole 402. Among them, the positions of the first through hole 211 and the first guiding hole 401 correspond to each other. The positions of the second through hole 212 and the second guiding hole 402 correspond to each other.

[0207] The first hinge shaft 5 passes through the first guiding hole 401 and the first through hole 211. The second hinge shaft 6 passes through the second guiding hole 402 and the second through hole 212. In this way, the backing plate 400 and the fixing member 200 are sleeved on the first hinge shaft 5 and the second hinge shaft 6.

[0208] In some embodiments of the present application, the height adjustment assembly includes a first guiding post 50. The first guiding post 50 is disposed at the end of the first hinge shaft 5 close to the hinge plate 4. The first guiding post 50 surrounds the end of the first hinge shaft 5 close to the hinge plate 4. The first guiding post 50 is installed in the first guiding hole 401 of the backing plate 400 to guide the movement of the backing plate 400 along the central axis direction of the first hinge shaft 5. Wherein, the outer diameter of the first guiding post 50 is larger than the diameter of the first hinge shaft 5 to reduce the relative friction between the backing plate 400 and the first hinge shaft 5.

[0209] In some embodiments of the present application, the first guiding post 50 is in contact and cooperation with the hole wall of the first guiding hole 401. The above setting improves the guiding accuracy of the first guiding post 50 for the movement of the backing plate 400 along the central axis direction of the first hinge shaft 5.

[0210] Refer to Figure 8 、 Figure 14 、 Figure 15 、 Figure 16 and, the height adjustment assembly includes a second guiding post 60. The second guiding post 60 is disposed at the end of the second hinge shaft 6 close to the hinge plate 4. The second guiding post 60 surrounds the end of the second hinge shaft 6 close to the hinge plate 4. The second guiding post 60 is installed in the second guiding hole 402 of the backing plate 400 to guide the movement of the backing plate 400 along the central axis direction of the second hinge shaft 6 (the first hinge shaft 5). Wherein, the outer diameter of the second guiding post 60 is larger than the diameter of the second hinge shaft 6 to reduce the relative friction between the backing plate 400 and the second hinge shaft 6.

[0211] In some embodiments of the present application, the second guiding post 60 is in contact and cooperation with the hole wall of the second guiding hole 402. The above setting improves the guiding accuracy of the second guiding post 60 for the movement of the backing plate 400 along the central axis direction of the second hinge shaft 6 (the first hinge shaft 5).

[0212] In some embodiments of the present application, the first guiding post 50 and the first hinge shaft 5 are integrally formed. The above setting ensures the integrity of the first guiding post 50 and the first hinge shaft 5 and increases its overall strength. The second guiding post 60 and the second hinge shaft 6 are integrally formed. The above setting ensures the integrity of the second guiding post 60 and the second hinge shaft 6 and increases its overall strength.

[0213] 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.

[0214] Among them, with reference to Figure 15 , the distance between the end face of the first guide post 50 away from the hinge plate 4 and the hinge plate 4 is denoted as H1, the distance between the end face of the second guide post 60 away from the hinge plate 4 and the hinge plate 4 is denoted as H2, and the thickness of the backing plate 400 (the dimension in the normal direction of the mating surface of the backing plate 400 and the hinge plate 4) is denoted as W D .

[0215] In some embodiments of the present application, W D is not greater than H1. When W D is greater than H1, when the backing plate 400 moves away from the hinge plate 4 along the central axis direction of the first hinge shaft 5, as the moving distance increases, the contact size between the backing plate 400 and the first guide post 50 is too small, and the guiding effect of the first guide post 50 on the backing plate 400 along the central axis direction of the first hinge shaft 5 is too poor, resulting in poor stability of the backing plate 400 moving away from the hinge plate 4 side relative to the first hinge shaft 5.

[0216] When W D is not greater than H1, when the backing plate 400 moves away from the hinge plate 4 along the central axis direction of the first hinge shaft 5, as the moving distance increases, although the contact size between the backing plate 400 and the first guide post 50 decreases, within the limited relative moving distance range (the height adjustment distance of the door body 3), the contact size between the backing plate 400 and the first guide post 50 can effectively ensure the guiding effect of the first guide post 50 on the backing plate 400 along the central axis direction of the first hinge shaft 5, so as to ensure the stability of the backing plate 400 moving away from the hinge plate 4 side relative to the first hinge shaft 5.

[0217] In some embodiments of the present application, W D is not greater than H2.

[0218] When W D is greater than H2, when the backing plate 400 moves away from the hinge plate 4 along the central axis direction of the second hinge shaft 6 (the first hinge shaft 5), as the moving distance increases, the contact size between the backing plate 400 and the second guide post 60 is too small, and the guiding effect of the second guide post 60 on the backing plate 400 along the central axis direction of the second hinge shaft 6 (the first hinge shaft 5) is too poor, resulting in poor stability of the backing plate 400 moving away from the hinge plate 4 side relative to the second hinge shaft 6 (the first hinge shaft 5).

[0219] When W DWhen it is not greater than H2, when the backing plate 400 moves away from the hinge plate 4 along the central axis direction of the second hinge axis 6 (the first hinge axis 5), as the moving distance increases, although the contact size between the backing plate 400 and the second guide post 60 decreases, within a limited relative moving distance range (the height adjustment distance of the door body 3), the contact size between the backing plate 400 and the second guide post 60 can effectively ensure the guiding effect of the second guide post 60 on the backing plate 400 along the central axis direction of the second hinge axis 6 (the first hinge axis 5), so as to ensure the stability of the backing plate 400 moving away from the hinge plate 4 relative to the second hinge axis 6 (the first hinge axis 5).

[0220] The above settings enable the first guide post 50 and the second guide post 60 to maintain the stability of guiding the movement of the backing plate 400 away from the hinge plate 4, so that the backing plate 400 can move away from the hinge plate 4 stably and without tilting.

[0221] In some embodiments of the present application, H1 = H2. The distance H1 between the end face 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 face of the second guide post 60 away from the hinge plate 4 and the hinge plate 4, and the matching lengths of the first guide post 50 and the second guide post 60 for the backing plate 400 are equal, making the guiding effects of the first guide post 50 and the second guide post 60 on the backing plate 400 more balanced.

[0222] In some embodiments of the present application, 4mm ≤ H1 ≤ 7mm. The above setting of 4mm ≤ H1 ≤ 7mm meets the contact size requirements of the first guide post 50 for the backing plate 400 etc. when the door body 3 is height-adjusted, effectively ensuring the guiding effect of the first guide post 50 on the backing plate 400 along the central axis direction of the first hinge axis 5, so as to ensure the stability of the backing plate 400 moving away from the hinge plate 4 relative to the first hinge axis 5.

[0223] When H1 < 4mm, when the door body 3 is height-adjusted to make the backing plate 400 move away from the hinge plate 4 along the central axis direction of the first hinge axis 5, as the moving distance increases, the contact size between the backing plate 400 and the first guide post 50 is too small, the guiding effect of the first guide post 50 on the backing plate 400 along the central axis direction of the first hinge axis 5 is too poor, and the stability of the backing plate 400 moving away from the hinge plate 4 relative to the first hinge axis 5 is poor.

[0224] When H1 > 7mm, H1 is too large, resulting in too long a length of the first guide post 50 provided at the end of the first hinge axis 5 along its central axis, resulting in an increase in the thickness of the fixing member 200, reducing the matching length between the first hinge axis 5 and the first track groove 7, and the first hinge axis 5 is easily detached from the first track groove 7.

[0225] In some embodiments of the present application, 4mm ≤ H2 ≤ 7mm.

[0226] The setting of 4mm ≤ H2 ≤ 7mm above satisfies the contact dimension requirements of the second guide post 60 on the backing plate 400, etc. when the door body 3 is raised, effectively ensuring the guiding effect of the second guide post 60 on the backing plate 400 along the central axis direction of the second hinge axis 6, so as to ensure the stability of the backing plate 400 moving away from the hinge plate 4 side relative to the second hinge axis 6.

[0227] When H2 < 4mm, H2 is too small. When the door body 3 is raised and the backing plate 400 moves away from the hinge plate 4 along the central axis direction of the second hinge axis 6, as the moving distance increases, the contact dimension between the backing plate 400 and the second guide post 60 is too small, the guiding effect of the second guide post 60 on the backing plate 400 along the central axis direction of the second hinge axis 6 is too poor, and the stability of the backing plate 400 moving away from the hinge plate 4 side relative to the second guide post 60 is poor.

[0228] When H2 > 7mm, H2 is too large, resulting in too long length of the second guide post 60 provided at the end of the second hinge axis 6 along its central axis, resulting in an increase in the thickness of the fixing member 200, reducing the mating length between the second hinge axis 6 and the second track groove 8, and the second hinge axis 6 is easily disengaged from the second track groove 8.

[0229] In some embodiments of the present application, a first avoidance recess 213 is formed on one side of the fixing plate 210 close to the backing plate 400.

[0230] Refer to Figure 9 , in the plane projection of the fixing plate 210 that cooperates with the backing plate 400 (in the plane projection perpendicular to the central axis of the first hinge axis 5), the projections of the first hinge axis 5 and the second hinge axis 6 are both completely located within the projection of the first avoidance recess 213.

[0231] In some embodiments of the present application, after the fixing plate 210 is sleeved on the first hinge axis 5 and the second hinge axis 6, the bottom wall of the first avoidance recess 213 opposite to the backing plate 400 cooperates with the end face of the first guide post 50 away from the hinge plate 4 and / or the end face of the second guide post 60 away from the hinge plate 4. The above setting enables the first guide post 50 and / or the second guide post 60 to support the end face of the fixing plate 50 away from the hinge plate 4 on the fixing member 200, so as to increase the overall support strength of the fixing member 200 for the door body 3.

[0232] In some embodiments of the present application, after the fixing plate 210 is sleeved on the first hinge axis 5 and the second hinge axis 6, there is a gap between the bottom wall of the first avoidance recess 213 opposite to the backing plate 400 and the end face of the first guide post 50 away from the hinge plate 4 and / or the end face of the second guide post 60 away from the hinge plate 4.

[0233] Refer to Figures 8 - 13, in some embodiments of the present application, a first fixing hole 216 is provided on the fixing plate 210. A first connection hole 403 is provided on the backing plate 400. Among them, the first connection hole 403 corresponds to the first fixing hole 216.

[0234] The refrigerator 100 includes a first fastener 91. The first fastener 91 is installed in the first fixing hole 216 and the first connection hole 403 to fixedly connect the fixing plate 210 and the backing plate 400.

[0235] 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 connection hole 403. The above setting makes the first fastener 91 only fixedly connected to the first connection hole 43, which reduces the connection and fixing length of the first fastener 91 with other components and is convenient for installation.

[0236] In some embodiments of the present application, the first fastener 91 is threadedly connected to the first connection hole 403.

[0237] In some embodiments of the present application, a first counterbore 214 is formed at one end of the first fixing hole 216 close to the movable plate 310. The inner diameter of the first counterbore 214 is larger than the inner diameter of the first through hole 211. The first fastener 91 includes a first limiting portion 911, and the first limiting portion 911 is completely received in the first counterbore 214 so that the end of the first fastener 91 close to the movable plate 310 does not protrude beyond the movable plate 310.

[0238] In some embodiments of the present application, a first hinge hole 44 is provided on the hinge plate 4. The first hinge hole 44 corresponds to the position of the first connection hole 403. That is, when the backing plate 400 is installed on the hinge plate 4 and the fixing plate 210 is installed 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 to each other.

[0239] Among them, the end of the first fastener 91 on the side of the backing plate 400 away from the fixing 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 fixing plate 210 forms a limiting retaining ring 912 by riveting. The outer diameter of the limiting retaining ring 912 is larger than the inner diameter of the first hinge hole 44 so that the limiting retaining ring 912 is always located on the side of the hinge plate 4 away from the movable plate 310 to prevent the first fastener 91 from detaching from the hinge plate 4.

[0240] During the product manufacturing process, components such as the hinge plate 4, the backing plate 400, and the movable plate 310 are transported as an integral assembly, and the integral assembly is directly connected to the box body 1 to complete the assembly. In the above embodiments, on the one hand, the first fastener 91 fixedly connects the movable plate 310 and the backing plate 400 to ensure 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. On the other hand, connecting the integrally fixed movable plate 310 and backing plate 400 to the hinge plate 4 can prevent the integrally fixed movable plate 310 and backing plate 400 from detaching from the hinge plate 4 during transportation, resulting in the separation of components.

[0241] In some embodiments of the present application, the aperture of the first hinge hole 44 is larger than the outer diameter of the end of the first fastener 91 on the side of the backing plate 400 away from the fixed plate 210. That is, there is a radial gap between the hole wall of the first hinge hole 44 and the first fastener 91. The above setting 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 direction of the first hinge hole 44, so as to adjust the position of the fixed plate 210 and the backing plate 400 connected fixedly away from the hinge plate 4, and finally adjust the height of the door body 3.

[0242] Refer to Figure 12 , around the first fastener 91, the sum of the thicknesses of the fixed plate 210, the backing plate 400, and the hinge plate 4 is denoted as h, and the length of the first fastener 91 is denoted as L. Among them, L is the distance between the first limiting portion 911 and the limiting retaining ring 912.

[0243] Among them, L is greater than h. The above setting can prevent the fixed plate 210 and the backing plate 400 from detaching from the hinge plate 4. At the same time, it also ensures that the integrally connected fixed plate 210 and backing plate 400 can move a certain distance relative to the hinge plate 4 along the axis direction of the first fastener 91.

[0244] In some embodiments of the present application, the difference L - h between L and h is not less than the maximum height adjustment amount of the door body 3. When L - h is less than the maximum height adjustment amount of the door body 3, the door body 3 cannot be adjusted to the maximum height adjustment amount, and its actual maximum height adjustment amount is limited and reduced.

[0245] When L - h is not less than the maximum height adjustment amount of the door body 3, on the one hand, it ensures that the integrally fixed plate 210 and backing plate 400 do not detach from the hinge plate 4; on the other hand, it does not affect adjusting the maximum height adjustment amount of the door body 3 by adjusting the backing plate 400, so as to meet the actual height adjustment requirements when adjusting the height.

[0246] The fixed plate 210 is provided with a second fixing hole 217. The backing plate 400 is provided with a second connection hole 404. Among them, the second connection hole 404 corresponds to the second fixing hole 217.

[0247] 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 fixedly connect the fixing plate 210 and the backing plate 400.

[0248] 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. With the above arrangement, the second fastener 92 is only fixedly connected to the second connecting hole 404, which reduces the connection and fixing length of the second fastener 92 with other components and facilitates installation.

[0249] In some embodiments of the present application, the second fastener 92 is threadedly connected to the first connecting hole 403.

[0250] In some embodiments of the present application, a second counterbore 215 is formed at one end of the second fixing hole 217 close to the movable plate 310. The inner diameter of the second counterbore 215 is larger than the inner diameter of the second through hole 212. The second fastener 92 includes a second limiting portion 921, and the second limiting portion 921 is completely received in the second counterbore 215 so that the end of the second fastener 92 close to the movable plate 310 does not protrude beyond the movable plate 310.

[0251] In some embodiments of the present application, a second hinge hole 45 is provided on the hinge plate 4. The position of the second hinge hole 45 corresponds to that of the first connecting hole 403. That is, when the backing plate 400 is installed on the hinge plate 4 and the fixing plate 210 is installed on the side of the backing plate 400 away from the hinge plate 4, the positions of the second fixing hole 217, the second connecting hole 404, and the second hinge hole 45 correspond to each other.

[0252] Wherein, the end of the second fastener 92 on the side of the backing plate 400 away from the fixing plate 210 is located in the second hinge hole 45.

[0253] In some embodiments of the present application, the aperture of the second hinge hole 45 is larger than the outer diameter of the end of the second fastener 92 on the side of the backing plate 400 away from the fixing plate 210. That is, there is a radial gap between the hole wall of the second hinge hole 45 and the second fastener 92. By providing the second hinge hole 45 on the hinge plate 4 above, the second fastener 92 can be avoided when connecting the fixing plate 210 and the backing plate 400 through the second fastener 92, ensuring the effective connection length of the second fastener 92 and the backing plate 400, thereby ensuring the connection strength between the fixing plate 210 and the backing plate 400. In addition, the above arrangement enables the fixing plate 210 and the gasket connected by the second fastener 92 to move relative to the hinge plate 4 in the direction of the central axis of the second hinge hole 45, so as to adjust the position of the fixedly connected fixing plate 210 and the backing plate 400 away from the hinge plate 4, and finally realize the adjustment of the height of the door body 3.

[0254] In some embodiments of the present application, in the projection on the plane where the hinge plate 4 is located (in the plane projection perpendicular to the central axis of the first hinge shaft 5), the first guide post 50 is located on the side of the second guide post 60 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 shaft 5 close to the first body side wall and the rear wall of the box body 1. The second fastener 92 is located on the side of the second hinge shaft 6 away from the first body side wall and close to the rear wall of the box body 1. Among them, both the second fastener 92 and the first fastener 91 are located on the side of the first hinge shaft 5 and the second hinge shaft 6 close to the rear wall of the box body 1.

[0255] When the fixed connecting fixing plate 210 and the backing plate 400 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 moves relative to the first hinge shaft 5 with respect to the first guide hole 401, and the second through hole 212 moves relative to the second hinge shaft 6 with respect to the second guide hole 402. Among them, the first guide post 50 and the second guide post 60 play a main guiding role, and 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 post 50, and the second guide post 60 jointly guide the fixed connecting fixing plate 210 and the backing plate 400, so that the fixed connecting fixing plate 210 and the backing plate 400 can move in the direction perpendicular to the hinge plate 4 (the central axis direction of the first hinge shaft 5), avoiding displacement situations such as deviation or tilt, so that the backing plate 400 in the adjusted fixed connecting fixing plate 210 and the backing plate 400 is parallel to the hinge plate 4, so that the position of the adjusted door body 3 does not deviate or tip over, reducing the unbalanced stress action of the interaction between the fixed part 200 and the movable part 300 of the gravity self-closing structure, and ensuring the effective life of the gravity self-closing structure and the effectiveness of the gravity self-closing structure to promote the automatic closing of the door body 3 under its own gravity.

[0256] In some embodiments of the present application, the height adjustment assembly includes a height adjustment bolt 2, and the height adjustment bolt 2 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. Among them, the height adjustment bolt 2 is located on the side of the backing plate 400 away from the fixing plate.

[0257] 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 close to the backing plate 400 is controlled, so as to adjust the distance between the overall backing plate 400 and the fixed part 200 of the fixed connection and the hinge plate 4, and finally the height of the door body 3 is adjusted through the interaction between the fixed part 200 and the door body 3.

[0258] In some embodiments of the present application, with reference to Figures 12 - 13 and Figures 17 - 18The height-adjusting bolt 2 includes a threaded section 21 provided with threads. One end of the threaded section 21 close to the backing plate 400 has a top plate 22 for cooperating with the backing plate 400. An installation portion 23 for cooperating with tools such as a screwdriver for installing the height-adjusting bolt 2 is provided on the top plate 22. As an optional setting method, the installation portion 23 is set as a cross-shaped recess for cooperating with a cross-shaped screwdriver, etc., to install the height-adjusting bolt 2 in the adjustment hole 46.

[0259] 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-adjusting bolt 2 rotates relative to the adjustment hole 46, so that the height-adjusting bolt 2 moves relative to the hinge plate 4, thereby adjusting the length of the height-adjusting bolt 2 on the side of the hinge plate 4 close to the backing plate 400, and thus adjusting the distance between the overall fixed connection of the backing plate 400 and the fixing member 200 and the hinge plate 4. Finally, the height of the door body 3 is adjusted through the interaction between the fixing member 200 and the door body 3.

[0260] In some embodiments of the present application, the length of the threaded section 21 of the height-adjusting bolt 2 is not less than the sum of the maximum height adjustment amount and the depth of the second hinge hole 45. The above setting enables the adjustment portion 24 to remain on the side of the hinge plate 4 away from the backing plate 400 during the overall height adjustment process, facilitating the user to rotate the height-adjusting bolt 2 by acting on the adjustment portion 24 with tools such as a wrench to achieve the height adjustment of the door body 3.

[0261] In some embodiments of the present application, the adjustment portion 24 is set as a prism, which is convenient for cooperating with a common tool wrench for adjustment. As an optional setting method, the adjustment portion 24 is set such that the cross-section perpendicular to the central axis of the threaded section 21 is a hexagon. That is, the adjustment portion 24 is set as a hexagonal prism.

[0262] In some embodiments of the present application, a clamping portion 25 is provided between the adjustment portion 24 and the threaded section 21. A height-limiting gasket 10 is installed in the clamping portion 25.

[0263] 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. The above setting, on the one hand, enables the height-limiting gasket 10 not to pass through the adjustment hole 46, so that the height-limiting gasket 10 is restricted on the side of the hinge plate 4 away from the backing plate 400, which can limit the length of the height-adjusting bolt 2 on the side of the hinge plate 4 close to the backing plate 400 to limit the maximum height adjustment amount and avoid over-adjustment. On the other hand, it can limit the adjustment portion 24 to always be on the side of the hinge plate 4 away from the backing plate 400, facilitating the user to rotate the height-adjusting bolt 2 by acting on the adjustment portion 24 with tools such as a wrench to achieve the height adjustment of the door body 3.

[0264] In some embodiments of the present application, the clamping portion 25 is provided as a clamping groove. The clamping groove is an annular groove surrounding the central axis of the threaded section 21. The height-limiting gasket 10 is installed in the clamping groove.

[0265] 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.

[0266] In some embodiments of the present application, a first mating recess 405 is provided on one side of the backing plate 400 close to the hinge plate 4. The height-adjusting bolt 2 corresponds to the position of the first mating recess 405. The top plate 22 of the height-adjusting bolt 2 cooperates with the first mating recess 405. The above settings define the relative position of the height-adjusting bolt 2 and the backing plate 400 in a plane perpendicular to the central axis of the height-adjusting bolt 2, so that the acting position of the height-adjusting bolt 2 on the backing plate 400 along the central axis of the height-adjusting bolt 2 always remains consistent.

[0267] In some embodiments of the present application, the first mating recess 405 includes a bottom wall opposite to the hinge plate 4 and a circumferential side wall surrounding the bottom wall. The bottom wall of the first mating recess 405 cooperates with the surface of the top plate 22 away from the hinge plate 4. The circumferential side wall of the first mating recess 405 cooperates with the side wall of the top plate 22.

[0268] In some embodiments of the present application, one end of the first mating recess 405 away from the hinge plate 4 protrudes towards the side away from the hinge plate 4 to form a limiting convex portion 406.

[0269] In some embodiments of the present application, a second mating recess 218 is provided on one side of the fixing plate 210 close to the hinge plate 4. The second mating recess 218 corresponds to the position of the limiting convex portion 406, and at least a part of the limiting convex portion 406 is received in the second mating recess 218. The above settings further define the relative position of the fixing plate 210 and the backing plate 400 in a plane perpendicular to the central axis of the height-adjusting bolt 2, and increase the overall connectivity between the fixing plate 210 and the backing plate 400.

[0270] In some embodiments of the present application, the circumferential side wall of the limiting convex portion 406 cooperates with the circumferential inner side wall of the second mating recess 218.

[0271] In some embodiments of the present application, the top wall of the limiting convex portion 406 cooperates with the bottom wall of the second mating recess 218. The above settings increase the supporting area of the backing plate 400 for the fixing plate 210 to enhance the supporting strength of the fixing member 200 for the door body 3.

[0272] In some embodiments of the present application, the distance between the bottom wall of the first mating recess 405 and the end face of the opening end of the first mating recess 405 is equal to the height of the limiting protrusion 406 along the central axis direction of the height-adjusting bolt 2. The above setting can ensure the thickness and strength of the backing plate 400 at the first mating recess 405.

[0273] In some embodiments of the present application, with reference to Figure 19 , in the plane projection perpendicular to the central axis of the height-adjusting bolt 2, the projection of the central axis of the height-adjusting bolt 2 is denoted as the height-adjusting bolt projection point T, the projection of the central axis of the first guiding column 50 is denoted as the first guiding column projection point J1, and the projection of the central axis of the second guiding column 60 is denoted as the second guiding column projection point J2. Among them, the height-adjusting bolt projection point T, the first guiding column projection point J1, and the second guiding column projection point J2 are not on the same straight line.

[0274] That is, the height-adjusting bolt projection point T, the first guiding column projection point J1, and the second guiding column projection point J2 are connected in sequence to form a triangle TJ1J2.

[0275] That is, the height-adjusting bolt 2, the first guiding column 50, and the second guiding column 60 are distributed in a triangular position.

[0276] With the above setting, through the surface contact support of the top plate 22 of the height-adjusting bolt 2 and the backing plate 400, under the guiding action of the first guiding column 50 and the second guiding column 60 on the backing plate 400, the two-dimensional plane movement of the backing plate 400 and the like in the plane perpendicular to the central axis of the height-adjusting bolt 2 is effectively restricted, so that it can only move along the central axis of the height-adjusting bolt 2. In addition, through the surface contact support of the top plate 22 of the height-adjusting bolt 2 and the backing plate 400 as described above, in cooperation with the guiding of the first guiding column 50 and the second guiding column 60 on the backing plate 400, the backing plate 400 can move smoothly and without tilting along the central axis of the height-adjusting bolt 2, and it can be avoided that the backing plate 400 gets stuck due to the interaction with the first guiding column 50 and / or the second guiding column 60 during the movement process due to tilting, resulting in the failure of height adjustment. Thus, it can be avoided that the adjusted backing plate 400 (fixed plate 210) tilts, causing the adjusted door body 3 to tilt, resulting in excessive stress when the gravity self-closing structure of the door body 3 interacts.

[0277] In some embodiments of the present application, the height-adjusting bolt projection point T is located on the side of the first guiding column projection point J1 away from the first body side wall and close to the plane where the access opening is located, and the height-adjusting bolt projection point T is located on the side of the second guiding column projection point J2 close to the first body side wall and the plane where the access opening is located.

[0278] The above settings define the relative positions of the height-adjusting bolt 2, the first guiding column 50, and the second guiding column 60, such that in the width direction of the cabinet 1, the height-adjusting bolt 2 is located between the first guiding column 50 and the second guiding column 20, so that the surface supporting effect of the height-adjusting bolt 2, the guiding effect of the first guiding column 50, and the guiding effect of the second guiding column 60 are more balanced, enabling the height of the door body 3 to be adjusted in a balanced and non-tilting manner.

[0279] Among them, in triangle TJ1J2, in the width direction of the cabinet 1, the distance between the projection point T of the height-adjusting bolt and the projection point J1 of the first guiding column is denoted as |TJ1|`, and the distance between the projection point T of the height-adjusting bolt and the projection point J2 of the second guiding column is denoted as |TJ2|`; among them, |TJ2|` < |TJ1|`.

[0280] In some embodiments of the present application, 2 ≤ |TJ1|`:|TJ2|` ≤ 4.

[0281] When |TJ1|`:|TJ2|` > 4 as above, |TJ1|`:|TJ2|` is too large, and the height-adjusting bolt 2 is too close to the second guiding column 60 relative to the first guiding column 50, resulting in too large a distance between the height-adjusting bolt 2 and the first guiding column 50. A small inclination of the backing plate 400 and the like will cause the backing plate 400 to be stuck by the first guiding column 50, and further cause the inclination of the backing plate 400 to increase, resulting in a large inclination of the door body 3 after height adjustment.

[0282] When |TJ1|`:|TJ2|` < 2 as above, |TJ1|`:|TJ2|` is too small, and the height-adjusting bolt 2 is too close to the first guiding column 50 relative to the second guiding column 60, resulting in too large a distance between the height-adjusting bolt 2 and the second guiding column 60. A small inclination of the backing plate 400 and the like will cause the backing plate 400 to be stuck by the second guiding column 60, and further cause the inclination of the backing plate 400 to increase, resulting in a large inclination of the door body 3 after height adjustment.

[0283] The setting of 2 ≤ |TJ1|`:|TJ2|` ≤ 4 makes the height-adjusting bolt 2 moderately biased towards the second guiding column 60 relative to the first guiding column 50, making the supporting force of the height-adjusting bolt 2 on the backing plate 400 and the like more balanced, so as to adjust the height of the backing plate 400 and the like smoothly and without tilting, and further enabling the height of the door body 3 to be adjusted in a balanced and non-tilting manner.

[0284] In some embodiments of the present application, in triangle TJ1J2, the straight line passing through the projection point T of the height-adjusting bolt and perpendicular to the side J1J2 intersects J1J2 at Z. Z is the foot of the perpendicular, TZ is the height of triangle TJ1J2, and its length is denoted as |TZ|. The length of the TJ1 side of triangle TJ1J2 is denoted as |TJ1|, the length of the TJ2 side is denoted as |TJ2|, and the length of J1J2 is denoted as |J1J2|.

[0285] Among them, 0.8 ≤ |TZ| : |J1J2| ≤ 1.1.

[0286] When |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 backing plate 400, etc. will cause the backing plate 400 to be stuck by the first guide post 50 and / or the second guide post 60, thereby increasing the inclination of the backing plate 400 and resulting in a large inclination of the door body 3 after being adjusted.

[0287] When |T Z | : |J1J2| < 0.8, |TZ| : |J1J2| is too small, the distance between T and J1J2 is too small, and the guiding action surface of the height-adjusting bolt 2, the first guide post 50, and the second guide post 60 on the backing plate 400, etc. is small, and it cannot more effectively support the backing plate 400, etc., easily causing the overall inclination of the backing plate 400, etc., resulting in the backing plate 400 being directly stuck by the first guide post 50 and / or the second guide post 60, and resulting in a large inclination of the door body 3 after being adjusted.

[0288] The setting of 0.8 ≤ |TZ| : |J1J2| ≤ 1.1 makes the distance between the height-adjusting bolt 2 and the first guide post 50 and the second guide post 60 moderate, and enables the guiding action surface of the height-adjusting bolt 2 cooperating with the first guide post 50 and the second guide post 60 on the backing plate 400, etc. to meet the support requirements, so that the supporting force on the backing plate 400, etc. is more balanced, and the height of the backing plate 400, etc. can be adjusted smoothly without inclination, thereby ensuring that the adjusted door body 3 is in a non-inclined state.

[0289] In some embodiments of the present application, 0.9 ≤ |J1Z| : |J2Z| ≤ 1.2.

[0290] When |J1Z| : |J2Z| > 1.2, |J1Z| : |J2Z| is too large, the height-adjusting bolt 2 is too close to the second guide post 60 relative to the first guide post 50, resulting in too large a distance between the height-adjusting bolt 2 and the first guide post 50. A small inclination of the backing plate 400, etc. will cause the backing plate 400 to be stuck by the first guide post 50, thereby increasing the inclination of the backing plate 400 and resulting in a large inclination of the door body 3 after being adjusted.

[0291] When |J1Z| : |J2Z| < 0.9, |J1Z| : |J2Z| is too small, the height-adjusting bolt 2 is too close to the first guide post 50 relative to the second guide post 60, resulting in too large a distance between the height-adjusting bolt 2 and the second guide post 60. A small inclination of the backing plate 400, etc. will cause the backing plate 400 to be stuck by the second guide post 60, thereby increasing the inclination of the backing plate 400 and resulting in a large inclination of the door body 3 after being adjusted.

[0292] The setting of 0.9 ≤ |J1Z| : |J2Z| ≤ 1.2 makes the height-adjusting bolt 2 moderately deviate towards the second guiding column 60 relative to the first guiding column 50, making the supporting force of the height-adjusting bolt 2 on the backing plate 400, etc. more balanced, so as to adjust the height of the backing plate 400, etc. smoothly without tilting, thereby ensuring that the adjusted door body is in a non-tilted state.

[0293] In some embodiments of the present application, the cross-section of the top plate 22 perpendicular to the central axis of the height-adjusting bolt 2 is circular. The radius of the circular cross-section of the top plate 22 perpendicular to the central axis of the height-adjusting bolt 2 is denoted as R T 。

[0294] The radius of the cross-section of the first guiding column 50 perpendicular to the central axis of the height-adjusting bolt 2 is R1.

[0295] The distance between the projection point T of the height-adjusting bolt and the projection point J1 of the first guiding column is denoted as |TJ1|.

[0296] Among them, 0.7 ≤ (R1 + R T ) : |TJ1| ≤ 0.9.

[0297] 0.7 ≤ (R1 + R T ) : |TJ1| ≤ 0.9's setting limits the distance between the top plate 22 of the height-adjusting bolt 2 supporting the backing plate 400 and the interaction surface between the first guiding column 50 guiding the backing plate 400, so as to limit the non-interacting distance between the height-adjusting bolt 2 and the first guiding column 50 with respect to the backing plate 400, so that the height-adjusting bolt 2 can better support the backing plate 400, etc., and more smoothly lift the backing plate 400, etc., to prevent the backing plate 400 from tilting and being stuck by the first guiding column 50.

[0298] (R1 + R T ) : |TJ1| > 0.9, (R1 + R T ) : |TJ1| is too large, the sum of the supporting area of the height-adjusting bolt 2 on the backing plate 400 and the outer diameter of the first guiding column 50 is too large, then the sum of the area occupied by the first mating recess 405 on the backing plate 400 and the area occupied by the aperture of the first guiding hole 401 on the backing plate 400 that mates with the first guiding column 50 is too large, and the position and setting for installing the second fastener 92 or the first fastener 91 on the backing plate 400 are restricted. On the other hand, the distance between the height-adjusting bolt 2 and the first guiding column 50 is too small, and the strength of the hinge plate 4 between the adjusting hole 46 for installing the height-adjusting bolt 2 and the first guiding column 50 is small, and the hinge plate 4 is easily damaged.

[0299] (R1 + R T ) : |TJ1| < 0.7, (R1 + R T: If |TJ1| is too small, that is, the sum of the supporting area of the height-adjusting bolt 2 on the backing plate 400 and the outer diameter of the first guiding column 50 is too small, then the sum of the area occupied by the first mating recess 405 on the backing plate 400 and the area of the aperture of the first guiding hole 401 on the backing plate 400 that mates with the first guiding column 50 is too small, and the distance between the height-adjusting bolt 2 and the first guiding column 50 is too large, resulting in the backing plate 400 being easily stuck by the first guiding column 50.

[0300] The cross-sectional radius of the second guiding column 60 perpendicular to the central axis of the height-adjusting bolt 2 is R2. The distance between the projection point T of the height-adjusting bolt and the projection point J2 of the second guiding column is denoted as |TJ2|;

[0301] 0.6 ≤ (R2 + R T ): |TJ2| ≤ 0.9.

[0302] 0.6 ≤ (R2 + R T ) : The setting of |TJ2| ≤ 0.9 limits the distance between the top plate 22 of the backing plate 400 supported by the height-adjusting bolt 2 and the interaction surface between the second guiding column 60 and the backing plate 400 for guiding, so as to limit the distance between the height-adjusting bolt 2 and the second guiding column 60 where there is no interaction with the backing plate 400, so that the height-adjusting bolt 2 can better support the backing plate 400, etc., lift the backing plate 400, etc. more smoothly, and prevent the backing plate 400 from tilting and being stuck by the second guiding column 60.

[0303] (R2 + R T ) : |TJ2| > 0.9, (R1 + R T ) : If |TJ1| is too large, that is, the sum of the supporting area of the height-adjusting bolt 2 on the backing plate 400 and the outer diameter of the second guiding column 60 is too large, then the sum of the area occupied by the first mating recess 405 on the backing plate 400 and the area of the aperture of the second guiding hole 402 on the backing plate 400 that mates with the second guiding column 60 is too large, and the position and setting for installing the second fastener 92 or the first fastener 91 on the backing plate 400 are restricted. On the other hand, the distance between the height-adjusting bolt 2 and the second guiding column 60 is too small, and the strength of the hinge plate 4 between the adjusting hole 46 for installing the height-adjusting bolt 2 and the second guiding column 60 is small, and the hinge plate 4 is easily damaged.

[0304] (R2 + R T ) : |TJ2| < 0.6, (R1 + R T ) : If |TJ1| is too small, that is, the sum of the supporting area of the height-adjusting bolt 2 on the backing plate 400 and the outer diameter of the second guiding column 60 is too small, then the sum of the area occupied by the first mating recess 405 on the backing plate 400 and the area of the aperture of the second guiding hole 402 on the backing plate 400 that mates with the second guiding column 60 is too small, and the distance between the height-adjusting bolt 2 and the second guiding column 60 is too large, resulting in the backing plate 400 being easily stuck by the second guiding column 60.

[0305] The distance between the edge of the height-adjusting bolt 2 supporting the cushion plate 400 and the guiding interaction surface of the first guiding column 50 for guiding the cushion plate 400, and the distance between the edge of the height-adjusting bolt 2 supporting the cushion plate 400 and the guiding interaction surface of the second guiding column 60 for guiding the cushion plate 400 are simultaneously defined above, so that the supporting force of the height-adjusting bolt 2 can balance the interaction between the cushion plate 400 and the first guiding column 50, and between the cushion plate 400 and the second guiding column 60, so that the cushion plate 400 and the like can move smoothly and without tilting under the supporting force of the height-adjusting bolt 2.

[0306] In some embodiments of the present application, the projection point T of the height-adjusting bolt is located at the geometric center of the cushion plate 400, so that the height-adjusting bolt 2 can bear the force on the gasket more smoothly, so that the height of the cushion plate 400 and the like can be adjusted more smoothly and without tilting by the height-adjusting bolt 2, ensuring that the adjusted door body 3 does not tilt.

[0307] In some embodiments of the present application, a foot pad 11 is provided on the side of the hinge plate 4 away from the cushion plate 400. The foot pad 11 is connected to the hinge plate 4 by bolts. By adjusting the position of the foot pad 11 relative to the hinge plate 4 in the direction perpendicular to the hinge plate 4, the box body 1 can be placed stably.

[0308] In some embodiments of the present application, rolling elements 12 are provided on the hinge plate 4 to facilitate pushing the refrigerator to move.

[0309] In some embodiments of the present application, the foot pad 11 is located on the side of the height-adjusting bolt 2 away from the first body side wall of the box body 1 and the plane of the access opening.

[0310] In some embodiments of the present application, the rolling elements 12 are located on the side of the height-adjusting bolt 2 close to the rear wall of the box body 1.

[0311] In some embodiments of the present application, the height-adjusting bolt 2 is provided on the first plate portion 41.

[0312] The above settings make the adjusting portion 24 of the height-adjusting bolt 2 on the side of the hinge plate 4 away from the cushion plate 400 close to the first body side wall and not blocked by the foot pad 11, the rolling elements 12, etc., facilitating the user to apply an action to the adjusting portion 24 from the side of the first body side wall of the box body 1 for height adjustment.

[0313] In some embodiments of the present application, with reference to Figures 4 - 5 , the fixing member 200 includes a supporting portion 230 for supporting the door body 3. The supporting portion 230 is located on the side of the fixing plate 210 away from the cushion plate 400. Among them, the supporting portion 230 is disposed 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 supporting portion 230.

[0314] In some embodiments of the present application, the fixing plate 210 and the supporting portion 230 are integrally formed.

[0315] When the movable member 300 on the door body 3 cooperates with the fixed member 200, the support portion 230 on the movable member 300 cooperates with the support portion 230 on the fixed member 200. The above supports the door body 3 by the cooperation of the support portion 230 on the fixed member 230 fixed to the box body 1 and the movable member 300 fixed to the door body 3.

[0316] In some embodiments of the present application, the surface of the fixing plate 210 that is in contact and cooperation with the backing plate 400 is denoted as the fixed cooperation surface 240.

[0317] In some embodiments of the present application, the end face of the fixing plate 210 close to the hinge plate 400 is denoted as the fixed cooperation surface 240.

[0318] The plane where the opening at the end of the second through hole 212 away from the backing plate 400 is located is denoted as the second plane 260. Among them, the distance between the second plane 260 and the fixed cooperation surface 240 is denoted as X1.

[0319] The plane where the opening at the end of the first through hole 211 passing through the support portion 230 and away from the backing plate 400 is located is denoted as the first plane 250. Among them, the distance between the first plane 250 and the fixed cooperation surface 240 is denoted as X2.

[0320] Among them, X1 < X2. The above settings make the movable member 300 on the door body 3 cooperate with the first plane 250, and at the same time, there is a first gap μ between the movable member 300 on the door body 3 and the second plane 260. The setting of the above first gap μ makes the door body 3 not interact with the second plane 260. The above settings reduce the mutual contact area between the fixed member 200 and the movable member 300, thereby reducing the wear area of the components due to the relative movement friction between the fixed member 200 and the movable member 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 settings avoid the wear of the second track groove 8 that cooperates with the second hinge shaft 6 caused by the relative movement between the fixed member 200 and the movable member 300.

[0321] Among them, the first gap μ = X2 - X1.

[0322] In some embodiments of the present application, the first guiding portion 220 is located on the side of the second hinge shaft 6 away from the first hinge shaft 5. The distance between the first guiding portion 220 and the first hinge shaft 5 is greater than the distance between the first guiding portion 220 and the second hinge shaft 6.

[0323] In some embodiments of the present application, along the central axis direction of the first hinge shaft 5, the point on the first guiding portion 220 with the maximum distance from the fixed cooperation surface 240 is denoted as the first adjustment maximum point A1.

[0324] In some embodiments of the present application, in a plane perpendicular to the central axis of the first hinge shaft 5, the first maximum adjustment point A1 is located on the side of the second hinge shaft 6 away from the first hinge shaft 5 (or the side wall of the first body). That is, the distance between the first maximum adjustment point A1 and the first hinge shaft 5 is greater than the distance between the first guiding portion 220 and the second hinge shaft 6.

[0325] Correspondingly, the first guiding portion 220 on the movable member 300 is located on the side of the second track groove 8 away from the first track groove 7.

[0326] In some embodiments of the present application, the first maximum adjustment point A1 is located on the side of the first hinge shaft 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 shaft 6 close to the rear wall of the box body 1.

[0327] The above further defines the relative positional relationship between the first maximum adjustment point A1 and the first hinge shaft and the second hinge shaft in the front-rear 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 of the first guiding portion is located on the side close to the door body 3), and when the gravitational potential energy is the largest during the operation of the gravity self-closing structure (the first maximum adjustment point A1 of the first guiding portion is the acting point), the above-described scheme limits the inclination of the door body within a small range, so as to effectively ensure the cooperation relationship between the first hinge shaft and the first track groove, and the second hinge shaft and the second track groove, and avoid excessive inclination of the door body resulting in excessive force between the double shafts and the double grooves, which may cause the door body to fail to open or close smoothly.

[0328] It should be noted that when there are multiple points with the maximum distance between the first guiding portion 220 and the fixed mating surface 240, the point with the minimum distance from the central axis of the first hinge shaft 5 is the first maximum adjustment point A1. For example, when the end face of the first guiding portion 220 away from the backing plate 400 is a plane parallel to the fixed mating surface 240, all the points on the above plane are the points with the maximum distance from the fixed mating surface 240, and the point on this plane with the minimum distance from the central axis of the first hinge shaft 5 is the first maximum adjustment point A1.

[0329] Similarly, when the end face of the first guiding portion 220 away from the backing plate 400 is a straight line parallel to the fixed mating surface 240, all the points on the above straight line (line segment) are the points with the maximum distance from the fixed mating surface 240, and the point on this straight line (line segment) with the minimum distance from the central axis of the first hinge shaft 5 is the first maximum adjustment point A1.

[0330] The second guiding part 320 provided on the fixing part 200 is located on the side of the second hinge shaft 6 away from the first hinge shaft 5. The fixing part 200 and the moving part 300 are cooperated through the supporting part 230 surrounding the first hinge shaft 5. When the first guiding part 220 and the second guiding part 320 of the gravity self-closing structure act on each other, the distance of the door body 3 under the action of gravity relative to the contact and cooperation stress support position (the cooperation position of the supporting part 230 and the moving part 300) between the moving part 300 and the fixing part 200 is large, and the moment generated by the gravity of the door body 3 is large, which is more conducive to the rising and falling of the door body 3 under the action of its own gravity, so that the moment generated by the gravity is sufficient to automatically close the door body 3.

[0331] As above, the second plane 260 of the fixing part 200 cooperates with the moving part 300 on the door body 3 to support the door body 3. When the gravity self-closing structure acts, the first guiding part 220 and the second guiding part 320 act on each other to support the door body 3.

[0332] When the door body 3 is in the closed state, the first guiding part 220 and the second guiding part 320 still keep in contact with each other to always provide a force to promote the automatic closing of the door body 3, so that the door body 3 still has a tendency to approach the box body 1 in the closed state to press the door seal strip, effectively ensuring the sealing performance between the door body 3 and the box body 1.

[0333] In some embodiments of the present application, the height direction of the box body 1 and the central axis direction of the first hinge shaft 5 are in the same direction.

[0334] In some embodiments of the present application, refer to Figure 10 , along the height direction of the box body 1, the point on the rolling part 12 with the largest distance from the top wall of the box body 1 is denoted as the first point F1. Along the height direction of the box body 1, the supporting part 230 of the fixing part 200 is the point on the fixing part 200 with the smallest distance from the top wall of the box body 1 and is denoted as the second point F2.

[0335] Among them, along the height direction of the box body 1 (along the central axis direction of the first hinge shaft 5), the distance between the first point F1 and the second point F2 is denoted as W.

[0336] In some embodiments of the present application, 32mm ≤ W ≤ 36mm.

[0337] To meet the height requirements of the refrigerator 100 for the height of the target audience of the refrigerator 100, the maximum height of the refrigerator 100 is limited.

[0338] When 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 body 1 away from the top wall along the height direction of the box body 1, resulting in a decrease in the distance between the bottom wall and the top wall of the box body 1, and ultimately resulting in a decrease in the accommodation cavity inside the box body 1.

[0339] If W < 32 mm and W is too small, the dimensions of the components (fastening member 200, backing plate 400, hinge plate 4, and rolling member 12) between the first point F1 and the second point F2 are restricted and correspondingly reduced, resulting in a decrease in the strength of at least one of the components with reduced dimensions, such as the fastening member 200, the backing plate 400, the hinge plate 4, and the rolling member 12, and thus failing to meet the product quality requirements.

[0340] The setting of 32 mm ≤ W ≤ 36 mm not only ensures the strength of each component to meet the product quality requirements but also reduces the space occupied in the height direction of the cabinet 1 to increase the volume of the accommodation cavity.

[0341] In some embodiments of the present application, along the height direction of the cabinet 1, the distance between the bottom wall of the cabinet and the first point F1 is denoted as W1; wherein, 22 mm ≤ W1 ≤ 28 mm.

[0342] To meet the height requirements of the target audience of the refrigerator 100, the maximum height of the refrigerator 100 is restricted.

[0343] If W1 > 28 mm and W1 is too large, the space occupied by the components on the side of the bottom wall of the cabinet 1 away from the top wall in the height direction of the cabinet 1 increases, resulting in a decrease in the distance between the bottom wall and the top wall of the cabinet 1, and ultimately leading to a decrease in the accommodation cavity within the cabinet 1.

[0344] If W1 < 22 mm and W1 is too small, the dimensions of the components (hinge plate 4 and rolling member 12) between the bottom wall of the cabinet and the first point F1 are restricted and correspondingly reduced, resulting in a decrease in the strength of at least one of the components with reduced dimensions, such as the hinge plate 4 and the rolling member 12, and thus failing to meet the product quality requirements.

[0345] The setting of 22 mm ≤ W1 ≤ 28 mm not only ensures the strength of each component to meet the product quality requirements but also reduces the space occupied in the height direction of the cabinet 1 to increase the volume of the accommodation cavity.

[0346] In some embodiments of the present application, along the height direction of the cabinet, the distance between the second point F2 and the hinge plate 4 is denoted as W2; wherein, 8 mm ≤ W2 ≤ 12 mm.

[0347] To meet the height requirements of the target audience of the refrigerator 100, the maximum height of the refrigerator 100 is restricted.

[0348] If W2 > 12 mm and W2 is too large, the space occupied by the components on the side of the lower end wall of the door body 3 away from its top wall in the height direction of the cabinet 1 increases, the height of the door body 3 decreases, and the height of the access opening of the accommodation cavity that it can close or open decreases, ultimately leading to a decrease in the accommodation cavity within the cabinet 1.

[0349] If W2 < 8 mm, i.e., W2 is too small, the sizes of the components (the fixing member 200 and the backing plate 400) between the lower end wall of the door body 3 (the second point F2) and the hinge plate 4 are limited and correspondingly reduced, resulting in a decrease in the strength of at least one of the fixing member 200 and the backing plate 400 with a reduced size, and the product quality requirements cannot be met.

[0350] The setting of 8 mm ≤ W2 ≤ 12 mm not only ensures the strength of each component to meet the product quality requirements, but also reduces the space occupied in the height direction of the cabinet 1 to increase the volume of the accommodation cavity.

[0351] In some embodiments of the present application, the first plane 250 on the fixing member 200 is the plane with the smallest distance between the supporting portion 230 and the top wall of the cabinet 1. That is, the second point F2 is located on the first plane 250.

[0352] 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 cabinet 1. That is, the distance between the first maximum adjustment point A1 and the top wall of the cabinet 1 is not less than the distance between the first plane 250 and the top wall of the cabinet 1.

[0353] In the height direction of the cabinet 1, the first maximum adjustment point A1 is located on the side of the first plane 250 away from the top wall of the cabinet 1 or on the first plane 250.

[0354] In some embodiments of the present application, the first maximum adjustment point A1 is located on the side of the first plane 250 close to the top wall of the cabinet 1.

[0355] In some embodiments of the present application, along the central axis direction of the first hinge shaft 5, the distance from the first plane 250 of the fixing member 200 to the fixed mating surface 240 is denoted as W G , 6 mm ≤ W G ≤ 8 mm.

[0356] The above setting of 6 mm ≤ W G ≤ 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.

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

[0358] W G > 8 mm, if W G is too large, it will cause W to be too large, resulting in an increase in the space occupied by the components on the side of the bottom wall of the cabinet 1 away from the top wall, a decrease in the distance between the bottom wall and the top wall of the cabinet 1, and ultimately a decrease in the accommodation cavity inside the cabinet 1.

[0359] W G < 6 mm, if WG Too small, the strength of the fixing member 200 is too poor to support the box body 1, and the product quality is unqualified.

[0360] In some embodiments of the present application, along the central axis direction of the first hinge shaft 5, the thickness of the hinge plate 4 is denoted as W J , 4 mm ≤ W J ≤ 5 mm.

[0361] The above setting of 4 mm ≤ W J ≤ 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.

[0362] To meet the height requirements of the refrigerator 100 for the height of the target audience of the refrigerator 100, the maximum height of the refrigerator 100 is limited.

[0363] W J > 5 mm, W J is too large, which will cause W to 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 and the top wall of the box body 1, and ultimately resulting in a decrease in the accommodation cavity inside the box body 1.

[0364] W J < 4 mm, W J 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.

[0365] Among them, as a definition of the thickness W of the hinge plate 4 J is:

[0366] The plane parallel to the plane where the access opening is located intersects the hinge plate 4 to obtain an intersection section, and the length of this 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 and obtained in the above manner J .

[0367] As another definition of the thickness W of the hinge plate 4 J is:

[0368] The normal line of the plane where the access opening is located is denoted as the first normal line. The cross-section of the hinge plate 4 perpendicular to the first normal line is the thickness cross-section, and the length of this thickness cross-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 and obtained in the above manner J .

[0369] Along the central axis direction of the first hinge shaft 5, the thickness of the backing plate 400 is denoted as W D , 2.5 mm ≤ WD ≤5 mm.

[0370] W D >5 mm, W D is 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, a decrease in the distance between the bottom wall and the top wall of the box body 1, and ultimately a decrease in the accommodation cavity inside the box body 1.

[0371] W D <2.5 mm, W D is too small, the depths of the first connection hole 403 and the second connection hole 404 on the spacer plate 400 are reduced, the lengths of the threaded connection between the first connection hole 403 and the second fastener 92 and the connection length between the second connection hole 404 and the first fastener 91 are affected, and the connection strength between the fixing member 200 and the spacer plate 400 connected by the second fastener 92 and the first fastener 91 is poor.

[0372] 2.5 mm ≤ W D ≤ 5 mm ensures that the spacer plate 400, the spacer plate 400 and the first fastener 91 and / or the second fastener 92 have sufficient strength and reduces the space occupied by the spacer plate 400 along the central axis direction of the first hinge shaft 5.

[0373] Among them, the measurement method of the thickness of the hinge plate 4 is the same; as for the thickness W D of the spacer plate 400 is defined as:

[0374] The plane parallel to the plane where the access opening is located intersects the spacer plate 400 to obtain an intersection section, and the length of this intersection section along the central axis direction of the first hinge shaft 5 is the thickness W of the spacer plate 400 D . As above, the thickness W of the spacer plate 400 can be measured and obtained in the above manner D .

[0375] As another definition of the thickness W D of the hinge plate 4 is:

[0376] The normal line of the plane where the access opening is located is denoted as the first normal line. The cross-section of the spacer plate 400 perpendicular to the first normal line is the thickness cross-section, and the length of this thickness cross-section along the central axis direction of the first hinge shaft 5 is the thickness W of the spacer plate 400 D . As above, the thickness W of the spacer plate 400 can be measured and obtained in the above manner D .

[0377] In some embodiments of the present application, the hinge plate 4 includes a first plate portion 41 and a second plate portion 42. Among them, the first plate portion 41 is located on the side of the second plate portion 42 away from the rear wall of the box body 1.

[0378] The first plate portion 41 and the second plate portion 42 are connected by a third plate portion 43. Among them, the third plate portion 43 includes a first connection end and a second connection end which are oppositely arranged. Among them, the first connection end and the second connection end are distributed along the central axis direction of the first hinge shaft 5, and the first connection end is located on the side of the second connection end away from the top wall of the box body 1.

[0379] The first connection end of the third plate portion 43 is connected to the first plate portion 41, and the second connection 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-back direction (the first normal direction) of the box body 1, the first plate portion 41 is located in front of the second plate portion 42.

[0380] Among them, the first hinge shaft 5 and the second hinge shaft 6 are arranged on the first plate portion 41. The cushion plate 400 is installed on the first plate portion 41, and the fixing member 200 is installed on the side of the cushion plate 400 away from the first plate portion 41.

[0381] The rolling member 12 is installed on the second plate portion 42 and is at least partially located on the side of the second plate portion 42 away from the bottom wall of the box body 1.

[0382] The second point F2 on the rolling member 12 is located on the side of the second plate portion 42 away from the cushion plate 400. To effectively ensure that the rolling member 12 contacts the placement surface of the refrigerator 100, so that the rolling member 12 can play its rolling role.

[0383] The hinge plate 4 is fixedly connected to the bottom wall of the box body 1 through the second plate portion 42.

[0384] With the above setting of the hinge plate 4, the distance between the first plate portion 41 and the bottom wall of the box body 1 is increased, so as to leave more height space for installing the cushion plate 400 and the fixing member 200. To ensure the thickness dimensions of the cushion plate 400 and the fixing member 200 to meet the strength requirements.

[0385] In addition, the second plate portion 42 cooperates with the bottom wall of the box body 1. The space on the side of the second plate portion 42 away from the bottom of the box body 1 is large, increasing the height space for installing the rolling member 12. Larger-diameter rolling members 12 can be installed, so that the installed rolling members 12 meet the strength requirements.

[0386] Through the setting of the height difference between the first plate portion 41 and the second plate portion 42 along the height direction of the box body 1 as described above, the height space along the central axis direction of the first hinge shaft 5 is fully utilized. While ensuring the strength of each component, the distance between the first point F1 and the second point F2 along the height direction of the box body 1 is reduced, reducing the height space of the above components, thereby increasing the dimension of the box body 1 along its height direction and increasing the volume of the accommodation cavity.

[0387] In some embodiments of the present application, along the height direction of the box body 1, the distance between the first plate portion 41 and the second plate portion 42 is denoted as the first folding height W F , where 1 mm ≤ W F ≤ 2 mm.

[0388] 1 mm ≤ W F ≤ 2 mm can ensure that the backing plate 400 and the fixing member 200 effectively support the door body 3, and reduce the space occupied in the height direction of the box body 1 along the whole, so as to increase the volume of the accommodation cavity of the box body.

[0389] W F > 2 mm, the first folding height W F is too large, resulting in an excessive downward displacement of the positions of the backing plate 400 and the fixing member 200, and unable to effectively support the door body 3. If it is necessary to ensure the support for the door body 3, it is necessary to increase the thickness of the backing plate 400 and the fixing member 200, which will cause the overall dimension between the first point F1 and the second point F2 to be too large, reducing the volume of the accommodation cavity of the box body 1. In addition, it requires a rolling member 12 with a larger diameter so that the lowest point of the rolling member 12 is located below the first plate portion 41 to ensure the effective rolling action of the rolling member 12, which will cause the box body 1 to be raised, reducing the accommodation space of the box body 1.

[0390] W F < 1 mm, the first folding height W F is too small, unable to effectively utilize the height space, the height dimension occupied by the backing plate 400 and the fixing member 200 increases, and the height space occupied by the rolling member 12 increases, resulting in the overall dimension between the first point F1 and the second point F2 being too large, reducing the accommodation space of the box body 1.

[0391] As a definition of W F : W F 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.

[0392] As another definition of W F : W F is the projection length of the third plate portion 43 in the height direction of the box body 1. That is, the distance between the first connection end and the second connection end of the third plate portion 43 in the height direction of the box body 1.

[0393] In some embodiments of the present application, the second plate portion 42 is provided with a mounting hole 421. A ring convex 422 is formed by protruding from the edge of the mounting hole 421 toward the side away from the backing plate 400.

[0394] The rolling member 12 includes a rotating shaft and rolling elements. Opposite ends of the rotating shaft of the rolling member 12 are fixedly connected to the annular protrusions 422. The rolling elements rotate about their rotating shaft and are located on the side of the surface of the hinge plate 4 close to the backing plate 400 away from the backing plate 400.

[0395] In some embodiments of the present application, connecting plates 423 are provided on both side walls of the annular protrusions 422 along the width direction of the box body 1. Both ends of the rotating shaft of the rolling member 12 are fixedly connected to the corresponding connecting plates 423.

[0396] In some embodiments of the present application, referring to Figure 20 , at least a part of the rolling elements is located within the mounting holes 421. That is, in the projection on the plane where the access opening is located, the projection of the rolling elements coincides with the projection of the second plate portion 42 at least partially. The above arrangement can make full use of the thickness dimension space of the hinge plate 4, reduce the dimension from the hinge plate 4 to the lowest point (F2) of the rolling member 12 away from the backing plate 400, thereby reducing the height of the box body 1, and further increasing the accommodation cavity of the box body 1.

[0397] In some embodiments of the present application, referring to Figures 21 - 22 , the guiding portion and the guiding part of the second hinge assembly provided at the upper end of the door body 3 are formed on the mounting block 13.

[0398] Specifically, the mounting block 13 includes a plate body 86, and a first track groove 7 and a second track groove 8 are provided on the plate body 86.

[0399] A receiving groove is provided on the end cover at the upper end of the door body 3, and the mounting block 13 is inserted into the receiving groove. Then, the plate body 86 is fixedly connected to the door body 3 by screws or the like.

[0400] In some embodiments of the present application, a plurality of screws for connecting the plate body 81 and the receiving groove are distributed at the edge of the plate body 86 surrounding the first track groove 7 and the second track groove 8.

[0401] In some embodiments of the present application, referring to Figures 7 - 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. Among them, the first groove wall 71 encloses a first groove opening 72 opposite to the first groove bottom 70.

[0402] 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. Among them, the second groove wall 81 encloses a second groove opening 82 opposite to the second groove bottom 80.

[0403] Among them, the length of the second track groove 8 is greater than the length of the first track groove 7. It should be noted that the length of each track groove is the length of the movement track line of the hinge shaft relative to the track groove it fits.

[0404] 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. Among them, S1 > S2. That is, the depth of the first track groove 7 is greater than the depth of the second track groove 8.

[0405] Since the second hinge assembly is installed at the upper end of the door body 3, in order to avoid the first track groove 7 and the second track groove 8, a receiving portion for accommodating the second hinge assembly is formed at the upper end of the door body 3. Therefore, the foam layer content in the area of the door body 3 where the second hinge assembly is installed is low, and the heat preservation effect of the door body 3 is weakened. Since the length of the second track groove 8 along its track direction is longer, the space occupied by the second track groove 8 is larger, and its influence on the heat preservation effect of the door body 3 is greater. The above settings make the depth of the second track groove 8 less than the depth of the first track groove 7 to reduce the space of the door body 3 occupied by the second track groove 8, thereby reducing its influence on the heat preservation effect of the door body 3.

[0406] 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.

[0407] For a track groove with a flat bottom and the bottom perpendicular to the groove wall. As a measurable method, the distance between the plane where the first notch 72 is located and the first bottom 70 is the depth S1 of the first track groove 7. The distance between the plane where the second notch 82 is located and the second bottom 80 is the depth S2 of the second track groove 8.

[0408] For a track groove with a bottom including multiple groove segments with different distances from its notch, the depth of the above first track groove 7 is its maximum depth, and the depth of the second track groove 8 is its minimum depth.

[0409] In some embodiments of the present application, the depth of the second hinge shaft 6 inserted into the second track groove 8 is denoted as C2. Among them, 6 mm ≤ C2 ≤ 12 mm.

[0410] When C2 > 12 mm, C2 is too large, and the corresponding depth of the second track groove 8 is too large. Adding to the length of the second track groove 8 along its central track line, the space occupied by the second track groove 8 is too large, resulting in less foam layer content in the area of the door body 3 where the second track groove 8 is located, poor heat preservation effect, and also causing condensation in this area.

[0411] When C2 < 12 mm, C2 is too small, and 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.

[0412] The setting of 6 mm ≤ C2 ≤ 12 mm can not only prevent the second hinge shaft 6 from falling off from the second track groove 8, but also ensure that the foam layer content in the area of the second track groove 8 in the door body 3 meets the heat preservation requirements.

[0413] In some embodiments of the present application, the first bottom 70 of the first track groove 7 is perpendicular to the first groove wall 71. The first bottom 70 is parallel to the plane where the first notch 72 is located.

[0414] In some embodiments of the present application, with reference to Figures 23 - 25 , the second track groove 8 includes a first groove section 83 and a second groove section 84 located on one side of the first groove section 83 close to the door side wall 33.

[0415] During the process of the door body 3 closing from the open state, the second hinge shaft 6 first moves relative to the second groove section 84 and then relative to the first groove section 83. That is, during the process of the door body 3 closing from the open state, the second hinge shaft 6 sequentially moves relative to the second groove section 84 and the first groove section 83.

[0416] In some embodiments of the present application, the second track groove 8 includes a third groove section 85. The first groove section 83, the third groove section 85, and the second groove section 84 are sequentially distributed along the extension direction of the central track line of the second track groove 8. One end of the third groove section 85 is connected to the first groove section 83, and the other end is connected to the second groove section 84. Among them, the first groove section 83 is located at one end of the third groove section 85 far from the door side wall 33, and the second groove section 84 is located at one end of the third groove section 85 close to the door side wall 33.

[0417] During the process of the door body 3 closing from the open state, the second hinge shaft 6 first moves relative to the second groove section 84, then relative to the third groove section 85, and then relative to the first groove section 83. That is, during the process of the door body 3 closing from the open state, the second hinge shaft 6 sequentially moves relative to the second groove section 84, the third groove section 85, and the first groove section 83.

[0418] The above setting of the third groove section 85 enables the first groove section 83 to be transitionally connected to 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.

[0419] The depth of the first groove section 83 is the first groove depth S 21 , and the depth of the second groove section 84 is the second groove depth S 22 . Among them, the first groove depth S 21 > the second groove depth S 22 .

[0420] As above, the first groove depth S 21 , the second groove depth S 22 is the groove depth inside the corresponding groove section.

[0421] In some embodiments of the present application, the distance between the first groove section 83 and the plane where the second notch 82 is located is the first groove depth S 21 . The distance between the second groove section 84 and the plane where the second notch 82 is located is the second groove depth S 22 .

[0422] In some embodiments of the present application, the connection surface between the first guiding portion 220 and the fixing plate 210 is denoted as the fixed connection surface.

[0423] In the height direction of the box body 1, the distance between the first adjustment maximum point A1 and the fixed connection surface is denoted as K A1 。

[0424] The connection surface between the second guiding portion 320 and the movable plate 310 is denoted as the movable connection surface. Along the central axis direction of the first hinge shaft 5, the point on the second guiding portion 320 with the maximum distance from the movable connection surface is denoted as the second adjustment maximum point A2. In the height direction of the box body 1, the distance between the second adjustment maximum point A2 and the movable connection surface is denoted as K A2 。

[0425] The distance between the first plane 250 and the fixed connection surface is denoted as Z.

[0426] In the height direction of the box body 1, the maximum displacement (maximum height adjustment amount) by which the door body 3 is lifted is S0. S0 = K A1 +K A2 -Z.

[0427] In some embodiments of the present application, at least during the process in which the first guiding portion 220 and the second guiding portion 320 interact to move the door body 3 in the height direction of the box body 1 (upward or downward), the second hinge shaft 6 moves relative to the first groove section 83.

[0428] The above settings make 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 without colliding with the second hinge shaft 6, so as to avoid the reduction of the heat preservation layer thickness caused by the long second track groove and the deterioration of the heat preservation effect.

[0429] In some embodiments of the present application, during the process in which the door body 3 is closed from the open state and the movable member 300 does not interact with the fixed member 200, the second hinge shaft 6 moves relative to the second groove section 84;

[0430] During the process in which the movable member 300 interacts with the fixed member 200 to move the door body 3 in the height direction of the box body 1 (upward or downward), the second hinge shaft 6 moves relative to the first groove section 83. The above settings make 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 without colliding with the second hinge shaft 6, so as to avoid the reduction of the heat preservation layer thickness caused by the long second track groove and the deterioration of the heat preservation effect.

[0431] In some embodiments of the present application, during the interaction between the first guiding portion 220 and the second guiding portion 320 of the gravity self-closing structure of the door body 3, the second hinge shaft 6 moves relative to the first groove section 83.

[0432] In some embodiments of the present application, S 21 -S 22 ≥ S0. The above settings ensure that during the process of the gravity closing structure interacting to lift the door body 3, there is no interaction between the second hinge shaft 6 and the second bottom 80 of the second track groove 8, thereby ensuring that the second hinge shaft 6 does not collide with the second track groove 8.

[0433] In some embodiments of the present application, one end of the third groove section 85 connected to the second groove section 84 is denoted as the second transition end; one end of the third groove section 85 connected to the first groove section 83 is denoted as the first transition end.

[0434] Wherein, the distance between the second transition end and the plane where the second groove opening 82 is located is less than the distance between the first transition end and the plane where the second groove opening 82 is located.

[0435] The above settings connect the first groove section 83 and the second groove section 84 with different depths through the inner bottom wall of the third groove, avoiding jamming when the second hinge shaft 6 moves relative to the second track groove 8.

[0436] Along the direction from the second transition end to the first transition end, the inner bottom wall of the third groove section 85 opposite to the second groove opening 82 extends away from the plane where the second groove opening 82 is located.

[0437] As above, the inner bottom wall of the third groove section 85 is smoothly connected to the inner bottom wall of the first groove section 83 and the inner bottom wall of the second groove section 84, so that the first groove section 83 and the second groove section 84 with different depths are smoothly transitionally connected. The above settings of the inclined inner bottom wall of the third groove gradually transition the depths of the first groove section 83 and the second groove section 84, avoiding jamming when the second hinge shaft 6 moves relative to the second track groove 8.

[0438] In some embodiments of the present application, a stepped connection can be formed on the outer wall of the bottom of the second track groove 8 on the side away from the second groove opening 82 corresponding to the connection between the first groove section 83 and the second groove section 84.

[0439] In some embodiments of the present application, along the direction from the second transition end to the first transition end, the bottom thickness of the third groove section 85 continuously decreases.

[0440] In some embodiments of the present application, along the direction from the second transition end to the first transition end, the bottom thickness of the third groove section 85 remains unchanged.

[0441] As above, the 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.

[0442] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. A refrigerator, characterized in that, Comprising: A box body, which defines a plurality of accommodation cavities; A door body, which is rotatably arranged on the box body to close or open the accommodation cavity; A hinge assembly, which connects the door body to the box body so that the door body can flip relative to the box body; The hinge assembly includes: A first hinge member, which is arranged on the box body; The first hinge member includes: A hinge plate, which is connected to the box body; A first hinge shaft and a second hinge shaft, which are arranged on the hinge plate; A second hinge member, which is arranged on the door body; The second hinge member includes: 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, which is located at the lower side of the door body; The gravity self-closing structure includes: A movable member, which is arranged at the lower end of the door body; A fixed member, which is connected to the hinge plate located at the lower side of the door body; The fixed member interacts with the movable member so that the door body moves in the height direction of the box body away from the top wall of the box body under the action of its own gravity; The fixed member includes: A support portion, which cooperates with the movable member to support the door body; A rolling member, which is arranged on the side of the hinge plate located at the lower side of the door body away from the top wall of the box body; In the height direction of the box body, the point on the rolling member with the maximum distance from the top wall of the box body is denoted as the first point F1; The point on the support portion of the fixed member with the minimum distance from the top wall of the box body is denoted as the second point F2; In the height direction of the box body, the distance between the first point F1 and the second point F2 is denoted as W; wherein, 32mm ≤ W ≤ 36mm.

2. The refrigerator according to claim 1, wherein The plane on the support portion for cooperating with the movable member is the first plane; The second point F2 is located on the first plane; The end face of the fixed member close to the hinge plate is denoted as the fixed mating surface; In the height direction of the box body, the distance from the first plane to the fixed mating surface is denoted as W G , 6 mm ≤ W G ≤ 8 mm.

3. The refrigerator according to claim 2, wherein In the height direction of the box body, the thickness of the hinge plate is denoted as W J , 4mm ≤ W J ≤ 5mm.

4. The refrigerator according to claim 1 or 2 or 3, wherein The refrigerator further includes: A height adjustment assembly, which is used to adjust the height of the door body relative to the box body; The height adjustment assembly includes: A spacer plate, which is arranged between the hinge plate and the fixed member; A height adjustment bolt, which passes through the hinge plate and can move relative to the hinge plate along the central axis of the height adjustment bolt; The height adjustment bolt is located on the side of the spacer plate away from the fixed member; A first guide post, which is arranged at the end of the first hinge shaft close to the hinge plate; A second guide post, which is arranged at the end of the second hinge shaft close to the hinge plate; Wherein, the spacer plate and the fixed member are sleeved on the first guide post and the second guide post; Wherein, in the plane projection perpendicular to the central axis of the height adjustment bolt, the central axis of the first guide post, the central axis of the second guide post, and the central axis of the height adjustment bolt are not on the same straight line; Adjust the position of the height-adjusting bolt relative to the hinge plate, and the height-adjusting bolt drives the backing plate and the fixing member to move along the first guide post and the second guide post, and drives the door body to move along the central axis of the height-adjusting bolt.

5. The refrigerator according to claim 4, wherein In the height direction of the box body, the thickness of the backing plate is denoted as W D , 2.5 mm ≤ W D ≤ 5 mm.

6. The refrigerator according to claim 4, wherein The hinge plate includes: A second plate portion connected to the cabinet; A first plate portion extending forward from the second plate portion; A third plate portion including a relatively arranged first connection end and a second connection end; wherein the first connection end is located on a side of the second connection end away from the top wall of the cabinet; The first connection end of the third plate portion is connected to the first plate portion, and the second connection end of the third plate portion is connected to the second plate portion; Wherein, the first hinge shaft and the second hinge shaft are arranged on the first plate portion; the backing plate is installed on the first plate portion, and the fixing member is installed on a side of the backing plate away from the first plate portion; The rolling member is installed on the second plate portion and at least partially located on a side of the second plate portion away from the bottom wall of the cabinet.

7. The refrigerator according to claim 6, wherein In the height direction of the box body, the distance between the first plate portion and the second plate portion is denoted as the first folding height W F , where 1 mm ≤ W F ≤ 2 mm.

8. The refrigerator according to claim 6 or 7, wherein An installation hole is provided on the second plate portion; a ring convex is formed by protruding from the edge of the installation hole toward a side away from the backing plate; The rolling member includes a rotating shaft and a rolling body rotating around the rotating shaft; Opposite ends of the rotating shaft of the rolling member are fixedly connected to the ring convex, and the rolling body is located on a side of the surface of the hinge plate close to the backing plate away from the backing plate; In a projection on a plane where the rear wall of the cabinet is located, the projection of the rolling body at least partially coincides with the projection of the second plate portion.

9. The refrigerator according to claim 6, wherein The height-adjusting bolt is arranged on the first plate portion; A foot pad is provided on a side of the hinge plate away from the backing plate; The foot pad is located on a side of the height-adjusting bolt away from the first body side wall of the cabinet and in a plane of the rear wall of the cabinet; The rolling member is located on a side of the height-adjusting bolt close to the rear wall of the cabinet.

10. A refrigerator, characterized in that, Comprising: A cabinet defining a plurality of accommodation chambers; A door body rotatably arranged on the cabinet to close or open the accommodation chamber; A hinge assembly connecting the door body to the cabinet so that the door body can be flipped relative to the cabinet; the hinge assembly includes: A first hinge member arranged on the cabinet; the first hinge member includes: A hinge plate connected to the cabinet; A first hinge shaft and a second hinge shaft arranged on the hinge plate; A second hinge member arranged on the door body; the second hinge member includes: 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 cabinet; A gravity self-closing structure located on the lower side of the door body; the gravity self-closing structure includes: A movable member arranged at the lower end of the door body; A fixing member, which is connected to a hinge plate located on the lower side of the door body; the fixing member interacts with the movable member to enable the door body to move in the height direction of the cabinet away from the top wall of the cabinet under the action of its own gravity; the fixing member includes: A supporting portion, which cooperates with the movable member to support the door body; A rolling member, which is arranged on the side of the hinge plate located on the lower side of the door body away from the top wall of the cabinet; In the height direction of the cabinet, the point on the rolling member with the maximum distance from the top wall of the cabinet is denoted as the first point F1; the point on the supporting portion of the fixing member with the minimum distance from the top wall of the cabinet is denoted as the second point F2; In the height direction of the cabinet, the distance between the bottom wall of the cabinet and the first point F1 is denoted as W1; wherein, 22mm ≤ W1 ≤ 28mm; In the height direction of the cabinet, the distance between the second point F2 and the hinge plate is denoted as W2; wherein, 8mm ≤ W2 ≤ 12mm.

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