Refrigerator

Abstract

The invention provides a refrigerator, belongs to the technical field of household appliances, and aims to solve the technical problem that after a door body of a related refrigerator is opened under the action of external force, the door body is easy to continuously rotate by a larger angle when the external force is relieved. The refrigerator comprises a refrigerator body, a door body and a hinge, the hinge comprises a fixing base, a hinge arm, a transmission assembly and an elastic piece, the fixing base is connected to the refrigerator body, the hinge arm is connected to the door body, the transmission assembly is connected between the fixing base and the hinge arm, and the elastic piece is connected to one rod piece in the transmission assembly. The elastic piece is matched with the other rod piece in the transmission assembly in an abutting mode within at least part of angle range in the rotating process of the door body, so that elastic deformation is generated, and the damping effect on movement of the hinge is achieved. When the door body is opened to a certain door opening angle and external force applied to the door body is relieved, the damping effect from the elastic piece can buffer at least part of door opening force or door closing force, and then the continuous rotating angle of the door body under the influence of inertia, self weight or manufacturing deviation and the like can be reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of household appliances, and in particular to a refrigerator. BACKGROUND

[0002] The refrigerator comprises a cabinet, a door body and a hinge. The cabinet is formed with a containing cavity for containing food or other articles. The door body is movably arranged on the cabinet by the hinge to close or open the containing cavity.

[0003] In the related art, the hinge comprises six connecting rods. When the refrigerator needs to be embedded in a cabinet, the hinge can control the door body to pass the edge of the cabinet and move outward during opening, so as to avoid interference between the door body and the cabinet during opening and to avoid the door body from blocking the containing cavity.

[0004] However, after the door body is opened to the opening angle required by the user, when the external force applied to the door body for rotating the door body relative to the cabinet is removed, the door body is prone to continue to rotate a large angle under the influence of inertia, self-weight or manufacturing deviation, etc., resulting in an increase in the deviation between the final opening angle of the door body and the opening angle required by the user. SUMMARY

[0005] Embodiments of the present application provide a refrigerator, which can solve the technical problem that the door body of the related refrigerator is prone to continue to rotate a large angle after being opened under the action of an external force.

[0006] In a first aspect, embodiments of the present application provide a refrigerator, comprising a cabinet, a door body and a hinge. The door body is rotatably connected to the cabinet by the hinge.

[0007] The hinge comprises:

[0008] a fixed seat connected to the cabinet;

[0009] a hinge arm connected to the door body;

[0010] a transmission assembly comprising four rods. Two of the rods are pivotally connected to the fixed seat, and the other two rods are pivotally connected to the hinge arm. The four rods are pivotally connected to each other, and the four rods, the fixed seat and the hinge arm form two independent quadrilaterals.

[0011] a spring connected to one of the rods in the transmission assembly. The spring is in mutual pressing cooperation with another rod in the transmission assembly at least in part of the angle range during the rotation of the door body, so as to generate elastic deformation and realize damping action on the movement of the hinge.

[0012] When the door body is opened to a certain opening angle and the opening or closing external force applied to the door body is removed, the damping effect of the elastic sheet can buffer at least part of the opening or closing force, and the angle of the door body continuing to rotate under the influence of inertia, weight or manufacturing deviation can be reduced.

[0013] In some embodiments of the present application, the transmission assembly includes a first link, a second link, a third link and a fourth link, the first end of the first link and the first end of the second link are pivotally connected to the fixed seat, the first end of the second link is farther away from the front wall of the box than the first end of the first link, the first end of the third link and the first end of the fourth link are pivotally connected to the hinge arm, the first end of the third link is closer to the side wall of the box near the fixed seat than the first end of the fourth link, the second end of the first link is pivotally connected to the second end of the fourth link, the second end of the third link is pivotally connected to the first link, the second end of the second link is pivotally connected to the third link, and the circumferential side wall of the second end of the second link is configured with a pressing portion.

[0014] The two ends of the elastic sheet are connected to the two ends of the third link, and the elastic sheet is in mutual pressing fit with the pressing portion within at least part of the angle range during the rotation of the door body, thereby generating elastic deformation to the movement of the hinge to achieve damping effect.

[0015] In this way, during the opening or closing of the door body, when the elastic sheet is in pressing fit with the pressing portion, the elastic sheet is extruded by the pressing portion to generate elastic deformation and apply a spring force to the pressing portion, the direction of the spring force is from the elastic sheet to the pressing portion, the spring force increases the pressure between the elastic sheet and the pressing portion, thereby increasing the frictional resistance between the elastic sheet and the pressing portion, and further achieving a certain damping effect on the movement of the hinge.

[0016] In some embodiments of the present application, the second end of the second link is pivotally connected to the third link through a first pivot shaft.

[0017] The pressing portion includes:

[0018] A curved segment, the direction of the spring force of the elastic sheet to the curved segment is directed to the first pivot shaft; and / or,

[0019] A first edge, the first edge is away from the front wall of the box, the spring force of the elastic sheet to the first edge has a force arm for rotating the second end of the second link around the first pivot shaft towards the front wall of the box; and / or,

[0020] The distance between the first edge and the axis of the first pivot gradually increases from the end close to the door body to the end away from the door body, the elastic force of the elastic sheet on the first edge has two perpendicular components, one of which is in the direction of the axis of the first pivot, and the other is in the direction of the box body;

[0021] The second edge is towards the front wall of the box body, and the elastic force of the elastic sheet on the second edge has a force arm that rotates the second end of the second connecting rod away from the front wall of the box body around the first pivot;

[0022] When the abutting part comprises a curved segment and a first edge, the first edge is farther away from the front wall of the box body than the curved segment;

[0023] When the abutting part comprises a curved segment and a second edge, the second edge is closer to the front wall of the box body than the curved segment.

[0024] In this way, the elastic sheet and the curved segment abut to prevent the elastic sheet from providing assistance to open or close the door body. The elastic sheet and the first edge abut to provide assistance to close the door body. The elastic sheet and the second edge abut to provide assistance to open the door body.

[0025] In some embodiments of the present application, the distance between the first edge and the axis of the first pivot gradually decreases from the end away from the first end of the second connecting rod to the end close to the first end of the second connecting rod.

[0026] In this way, as the door body gradually closes, the compression of the elastic sheet by the first edge gradually decreases, reducing the damping effect of the elastic sheet on the hinge and the assistance to close the door body when the door body is in a closed state, thereby reducing the opening force required to open the closed door body and facilitating the opening of the door body.

[0027] In some embodiments of the present application, the distance between the second edge and the axis of the first pivot gradually decreases from the end away from the first end of the second connecting rod to the end close to the first end of the second connecting rod.

[0028] In this way, as the door body gradually opens, the compression of the elastic sheet by the second edge gradually decreases, and the damping effect of the elastic sheet on the hinge and the assistance to open the door body also gradually decreases, thereby reducing the resistance of the door body when the door body is closed at the position where the elastic sheet and the second edge abut at the end close to the fourth pivot.

[0029] In some embodiments of the present application, the elastic sheet is recessed away from the second connecting rod.

[0030] In this way, the structure of the elastic sheet is simplified, and the elastic sheet is convenient to manufacture.

[0031] In some embodiments of the present application, the elastic sheet is configured with a matching protrusion, which protrudes towards the second connecting rod, and the matching protrusion and the pressing part are matched with each other to generate elastic deformation to dampen the movement of the hinge in at least a part of the angle range during the rotation of the door body.

[0032] In this way, the length between the first end and the second end of the elastic sheet remains unchanged, and the matching protrusion is configured on the elastic sheet, which can increase the expansion length of the elastic sheet, thereby increasing the deformation amount of the elastic sheet, and further increasing the elastic force of the matching protrusion on the pressing part, and improving the damping effect, door closing assistance and door opening assistance of the elastic sheet on the door body.

[0033] In some embodiments of the present application, the elastic sheet is configured with a matching section, which is recessed in a direction away from the second connecting rod, and the matching section and the pressing part are matched with each other to generate elastic deformation to dampen the movement of the hinge in at least a part of the angle range during the rotation of the door body.

[0034] In this way, when the matching section and the pressing part are matched with each other, the matching section and the pressing part can at least partially match with each other, that is, the matching section and the pressing part are in surface contact, so as to increase the contact area between the matching section and the pressing part, and further increase the frictional resistance between the matching section and the pressing part, thereby improving the damping effect of the elastic sheet on the movement of the hinge.

[0035] In some embodiments of the present application, the second connecting rod is configured with a limiting part on one side facing the first connecting rod.

[0036] The elastic sheet is configured with an auxiliary protrusion, which protrudes towards the second connecting rod, and the auxiliary protrusion abuts against and is limited by the limiting part when the door body is opened to the maximum door opening angle.

[0037] In this way, when the door body is opened to the maximum door opening angle and still has a tendency to open, the limiting part will press the auxiliary protrusion towards the fourth connecting rod and cause the auxiliary protrusion to elastically deform. Since the auxiliary protrusion has elasticity, the auxiliary protrusion will exert an elastic force from the auxiliary protrusion to the limiting part after the elastic deformation of the auxiliary protrusion, which can offset at least part of the pressure from the second connecting rod to the auxiliary protrusion, that is, buffer at least part of the door opening force, thereby reducing the possibility of the included angle between the second connecting rod and the third connecting rod continuing to decrease, reducing the possibility of the door opening angle of the door body being greater than the maximum door opening angle, and reducing the pulling between the door body and the hinge arm and between the cabinet and the fixed seat due to the excessive door opening angle of the door body.

[0038] In some embodiments of the present application, the third connecting rod comprises a first part and a second part which are arranged at intervals along the height direction of the refrigerator, and the second end of the second connecting rod extends between the first part and the second part.

[0039] The elastic sheet is configured with a positioning portion which is directed towards and connected to the first part and / or the second part.

[0040] In this way, the rigidity of the part of the elastic sheet which cooperates with the abutting portion is increased, the resistance during opening of the door body is increased, the damping effect of the elastic sheet on the movement of the hinge is improved, and after the external force for opening the door body is removed, the rotation speed of the door body relative to the cabinet can be reduced, thereby reducing the rotation angle of the door body.

[0041] In some embodiments of the present application, the thickness of the elastic sheet is between 1.5 mm and 2.5 mm, and the ratio of the thickness of the elastic sheet to the unfolded length of the elastic sheet is between 0.01 and 0.03.

[0042] In this way, the thickness of the elastic sheet between 1.5 mm and 2.5 mm can reduce the possibility of fatigue fracture of the elastic sheet due to too small thickness, while making it more laborious to open and close the door. The ratio of the thickness of the elastic sheet to the unfolded length of the elastic sheet is between 0.01 and 0.03, so as to facilitate bending and forming of the elastic sheet, and the elastic sheet is easy to produce and manufacture.

[0043] In a second aspect, the embodiments of the present application provide a refrigerator, comprising a cabinet, a door body and a hinge;

[0044] The hinge comprises:

[0045] A fixed seat connected to the cabinet;

[0046] A hinge arm connected to the door body;

[0047] A transmission assembly comprising a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the first end of the first connecting rod and the first end of the second connecting rod are both pivotally connected to the fixed seat, the first end of the second connecting rod is farther away from the front wall of the cabinet than the first end of the first connecting rod, the first end of the third connecting rod and the first end of the fourth connecting rod are both pivotally connected to the hinge arm, the first end of the third connecting rod is closer to the side wall of the cabinet near the fixed seat than the first end of the fourth connecting rod, the second end of the first connecting rod is pivotally connected to the second end of the fourth connecting rod, the second end of the second connecting rod is pivotally connected to the fourth connecting rod, the second end of the third connecting rod is pivotally connected to the second connecting rod, and the circumferential side wall of the second end of the third connecting rod is configured with an abutting portion;

[0048] A spring sheet is connected to both ends of the second connecting rod, and the spring sheet is in mutual pressing cooperation with the pressing part in at least a part of the angle range during the rotation of the door body, so as to generate elastic deformation to the pressing part, thereby achieving the damping effect on the movement of the hinge.

[0049] The refrigerator of the embodiment of the present application can buffer at least part of the opening force or closing force from the spring sheet when the door body is opened to a certain opening angle and the opening or closing external force applied to the door body is removed, thereby reducing the angle of the door body to continue to rotate under the influence of inertia, self-weight or manufacturing deviation, etc. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the drawings needed to be used in the embodiment or related art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0051] Figure 1 The first perspective structural schematic view of the refrigerator of the embodiment of the present application when the door body is at the maximum opening angle;

[0052] Figure 2 The first perspective structural schematic view of the refrigerator of the embodiment of the present application when the door body is at the maximum opening angle;

[0053] Figure 3 The second perspective structural schematic view of the refrigerator of the embodiment of the present application when the door body is at the maximum opening angle;

[0054] Figure 4 The second perspective structural schematic view of the refrigerator of the embodiment of the present application when the door body is at the maximum opening angle;

[0055] Figure 5 The structural schematic view of a transmission assembly of the refrigerator of the embodiment of the present application;

[0056] Figure 6 The structural schematic view of another transmission assembly of the refrigerator of the embodiment of the present application;

[0057] Figure 7 The structural schematic view of the refrigerator of the embodiment one of the present application when the door body is at the maximum opening angle;

[0058] Figure 8 The structural schematic view of the refrigerator of the embodiment one of the present application when the door body is at the maximum opening angle;

[0059] Figure 9 The structural schematic view of the refrigerator of the embodiment one of the present application when the door body is at the maximum opening angle;

[0060] Figure 10 FIG. 2 is a structural schematic view of the refrigerator of Embodiment 1 when the door body is opened to a maximum door opening angle;

[0061] Figure 11 FIG. 3 is a structural schematic view of the refrigerator of Embodiment 1 when the door body is opened to a maximum door opening angle;

[0062] Figure 12 FIG. 6 is a structural schematic view of the second link in the refrigerator of Embodiment 2;

[0063] Figure 13 FIG. 7 is a structural schematic view of the refrigerator of Embodiment 2 when the door body is in a closed state;

[0064] Figure 14 FIG. 8 is a structural schematic view of the refrigerator of Embodiment 2 when the door body is opened to a 30° door opening angle;

[0065] Figure 15 FIG. 9 is a structural schematic view of the refrigerator of Embodiment 2 when the door body is opened to a 60° door opening angle;

[0066] Figure 16 FIG. 10 is a structural schematic view of the refrigerator of Embodiment 2 when the door body is opened to a 90° door opening angle;

[0067] Figure 17 FIG. 11 is a structural schematic view of the refrigerator of Embodiment 2 when the door body is opened to a maximum door opening angle;

[0068] Figure 18 FIG. 14 is a structural schematic view of the second link in the refrigerator of Embodiment 3; Figure 1 ;

[0069] Figure 19 FIG. 14 is a structural schematic view of the second link in the refrigerator of Embodiment 3; Figure 2 ;

[0070] Figure 20 FIG. 17 is a structural schematic view of the refrigerator of Embodiment 3 when the door body is in a closed state;

[0071] Figure 21 FIG. 18 is a structural schematic view of the refrigerator of Embodiment 3 when the door body is opened to a 30° door opening angle;

[0072] Figure 22 FIG. 19 is a structural schematic view of the refrigerator of Embodiment 3 when the door body is opened to a 60° door opening angle;

[0073] Figure 23 FIG. 20 is a structural schematic view of the refrigerator of Embodiment 3 when the door body is opened to a 90° door opening angle;

[0074] Figure 24Structure diagram of the refrigerator of Embodiment Three of the present application when the door body is opened to the maximum opening angle;

[0075] Figure 25 Structure diagram of the spring piece in the refrigerator of the present application Figure 1 ;

[0076] Figure 26 Structure diagram of the spring piece in the refrigerator of the present application Figure 2 ;

[0077] Figure 27 Structure diagram of the spring piece in the refrigerator of the present application Figure 3 ;

[0078] Figure 28 Structure diagram of the refrigerator of Embodiment Four of the present application when the door body is in the closed state;

[0079] Figure 29 Structure diagram of the refrigerator of Embodiment Four of the present application when the opening angle of the door body is 30°;

[0080] Figure 30 Structure diagram of the refrigerator of Embodiment Four of the present application when the opening angle of the door body is 60°;

[0081] Figure 31 Structure diagram of the refrigerator of Embodiment Four of the present application when the opening angle of the door body is 90°;

[0082] Figure 32 Structure diagram of the refrigerator of Embodiment Four of the present application when the door body is opened to the maximum opening angle;

[0083] Figure 33 Structure diagram of the refrigerator of Embodiment Five of the present application when the door body is in the closed state;

[0084] Figure 34 Structure diagram of the refrigerator of Embodiment Five of the present application when the opening angle of the door body is 30°;

[0085] Figure 35 Structure diagram of the refrigerator of Embodiment Five of the present application when the opening angle of the door body is 60°;

[0086] Figure 36 Structure diagram of the refrigerator of Embodiment Five of the present application when the opening angle of the door body is 90°;

[0087] Figure 37 Structure diagram of the refrigerator of Embodiment Five of the present application when the door body is opened to the maximum opening angle;

[0088] Figure 38 Structure diagram of the spring piece in the refrigerator of the present applicationFigure 4 ;

[0089] Figure 39 Structure diagram of the spring in the refrigerator of the embodiment of the present application Figure 5 ;

[0090] Figure 40 Structure diagram of the refrigerator of the embodiment six of the present application when the door body is in the closed state

[0091] Figure 41 Structure diagram of the refrigerator of the embodiment six of the present application when the opening angle of the door body is 30°

[0092] Figure 42 Structure diagram of the refrigerator of the embodiment six of the present application when the opening angle of the door body is 60°

[0093] Figure 43 Structure diagram of the refrigerator of the embodiment six of the present application when the opening angle of the door body is 90°

[0094] Figure 44 Structure diagram of the refrigerator of the embodiment six of the present application when the door body is opened to the maximum opening angle

[0095] Figure 45 Structure diagram of the second connecting rod, the third connecting rod and the spring in the refrigerator of the embodiment of the present application Figure 1 ;

[0096] Figure 46 Structure diagram of the second connecting rod, the third connecting rod and the spring in the refrigerator of the embodiment of the present application Figure 2 ;

[0097] Figure 47 Structure diagram of the second connecting rod, the third connecting rod and the spring in the refrigerator of the embodiment of the present application Figure 46 .

[0098] Explanation of reference signs:

[0099] 1 - cabinet

[0100] 2 - door body

[0101] 3 - hinge

[0102] 31 - fixed seat

[0103] 32 - hinge arm

[0104] 33 - transmission assembly

[0105] 331 - first connecting rod

[0106] 332 - second connecting rod

[0107] 335 - abutment part; 336 - curved section;

[0108] 337 - first edge; 3371 - first curved surface;

[0109] 3372 - first flat surface; 338 - second edge;

[0110] 3381 - second curved surface; 3382 - second flat surface;

[0111] 339 - limiting part;

[0112] 333 - third connecting rod;

[0113] 3331 - first part; 3332 - second part;

[0114] 3333 - first connecting hole; 3334 - second connecting hole;

[0115] 3335 - connecting part;

[0116] 334 - fourth connecting rod;

[0117] 301 - first pivot shaft; 302 - second pivot shaft;

[0118] 303 - third pivot shaft; 304 - fourth pivot shaft;

[0119] 305 - fifth pivot shaft; 306 - sixth pivot shaft;

[0120] 307 - seventh pivot shaft;

[0121] 34 - elastic sheet;

[0122] 341 - first end; 342 - second end;

[0123] 343 - matching convex part; 344 - auxiliary convex part;

[0124] 345 - first convex part; 346 - second convex part;

[0125] 347 - matching section;

[0126] 4 - cabinet;

[0127] 41 - end face; 42 - edge; DETAILED DESCRIPTION

[0128] In order to make the purposes, embodiments and advantages of the present application clearer, the following will describe the exemplary embodiments of the present application clearly and completely with reference to the accompanying drawings. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application.

[0129] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the embodiments described next, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0130] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclusively include, for example, a product or device containing a series of components does not have to be limited to those components clearly listed, but can include other components not clearly listed or inherent to these products or devices.

[0131] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0132] The terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0133] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0134] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0135] Reference Figure 1The refrigerator of the embodiments of the present application comprises a cabinet 1, a door body 2 and a hinge 3. The cabinet 1 is formed with a receiving cavity for accommodating food or other articles. The opening of the receiving cavity faces the cabinet door side of the cabinet 1. The door body 2 is arranged at the cabinet door side of the cabinet 1. The door body 2 is rotationally connected with the cabinet 1 through the hinge 3 to close or open the receiving cavity through the door body 2.

[0136] With reference to Figure 2 And Figure 3 The refrigerator of the embodiments of the present application can be embedded in a cabinet 4 when installed. After installation is completed, the outer side of the door body 2 can be flush with the end surface 41 of the cabinet 4. An edge 42 is formed between the side of the cabinet 4 facing the cabinet 1 and the end surface 41 of the cabinet 4.

[0137] With reference to Figure 4 The hinge 3 comprises a fixed seat 31, a hinge arm 32 and a transmission assembly 33. The fixed seat 31 is connected to the cabinet 1. The hinge arm 32 is connected to the door body 2. The transmission assembly 33 is connected between the fixed seat 31 and the hinge arm 32.

[0138] With reference to Figure 5 And Figure 6 The transmission assembly 33 can comprise four linkages. Two of the four linkages are pivotally connected with the fixed seat 31. The other two of the four linkages are pivotally connected with the hinge arm 32. The four linkages are pivotally connected with each other. The four linkages, the fixed seat 31 and the hinge arm 32 enclose two independent quadrilaterals.

[0139] With reference to Figure 5 In some possible implementation manners of the embodiments of the present application, the transmission assembly 33 can comprise a first linkage 331, a second linkage 332, a third linkage 333 and a fourth linkage 334.

[0140] The first linkage 331 has a first end. The first end of the first linkage 331 is pivotally connected with the fixed seat 31.

[0141] The second linkage 332 has a first end. The first end of the second linkage 332 is farther away from the front wall of the cabinet 1 than the first end of the first linkage 331. The front wall of the cabinet 1 refers to the side of the cabinet 1 facing the door body 2. The first end of the second linkage 332 is pivotally connected with the fixed seat 31.

[0142] The third linkage 333 has a first end. The first end of the third linkage 333 is pivotally connected with the hinge arm 32.

[0143] The fourth linkage 334 has a first end. The first end of the fourth linkage 334 is farther away from the side wall of the cabinet 1 close to the fixed seat 31 than the first end of the third linkage 333. The side wall of the cabinet 1 refers to the two sides of the cabinet 1 along the width direction X. The first end of the fourth linkage 334 is pivotally connected with the hinge arm 32.

[0144] The first link 331 has a second end, and the second end of the first link 331 is located at one end of the first link 331 in the extension direction of the first link 331.

[0145] The fourth link 334 has a second end, and the second end of the fourth link 334 is located at one end of the fourth link 334 in the extension direction of the fourth link 334. The second end of the fourth link 334 is pivotally connected to the second end of the first link 331.

[0146] The third link 333 has a second end, and the second end of the third link 333 is located at one end of the third link 333 in the extension direction of the third link 333. The second end of the third link 333 is pivotally connected to the first link 331, and the projection of the second end of the third link 333 on the first link 331 is located between the first end of the first link 331 and the second end of the first link 331.

[0147] The second link 332 has a second end, and the second end of the second link 332 is located at one end of the second link 332 in the extension direction of the second link 332. The second end of the second link 332 is pivotally connected to the third link 333, and the projection of the second end of the second link 332 on the third link 333 is located between the first end of the third link 333 and the second end of the third link 333.

[0148] The first link 331 and the second link 332 are both pivotally connected to the fixed seat 31. The first link 331 is closer to the front wall of the box body 1 than the second link 332. The third link 333 and the fourth link 334 are both pivotally connected to the hinge arm 32. The third link 333 is closer to the side wall of the box body 1 near the fixed seat 31 than the fourth link 334.

[0149] The third link 333 and the fourth link 334 are also pivotally connected to the first link 331. The first link 331, the third link 333, the fourth link 334, and the hinge arm 32 form a quadrilateral. The end of the second link 332 away from the fixed seat 31 is pivotally connected to the third link 333. The fixed seat 31, the first link 331, the second link 332, and the third link 333 form a quadrilateral.

[0150] The third connecting rod 333 can rotate relative to the first connecting rod 331 about the second pivot axis 302. The hinged arm 32 can rotate relative to the third connecting rod 333 about the third pivot axis 303. The third connecting rod 333 can rotate relative to the second connecting rod 332 about the first pivot axis 301. The second connecting rod 332 can rotate relative to the fixed seat 31 about the fourth pivot axis 304. The first connecting rod 331 can rotate relative to the fixed seat 31 about the fifth pivot axis 305. The fourth connecting rod 334 can rotate relative to the first connecting rod 331 about the sixth pivot axis 306. The hinged arm 32 can rotate relative to the fourth connecting rod 334 about the seventh pivot axis 307.

[0151] That is, the third connecting rod 333 can rotate relative to the first connecting rod 331 about the axis of the second pivot axis 302. The hinged arm 32 can rotate relative to the third connecting rod 333 about the axis of the third pivot axis 303. The third connecting rod 333 can rotate relative to the second connecting rod 332 about the axis of the first pivot axis 301. The second connecting rod 332 can rotate relative to the fixed seat 31 about the axis of the fourth pivot axis 304. The first connecting rod 331 can rotate relative to the fixed seat 31 about the axis of the fifth pivot axis 305. The fourth connecting rod 334 can rotate relative to the first connecting rod 331 about the axis of the sixth pivot axis 306. The hinged arm 32 can rotate relative to the fourth connecting rod 334 about the axis of the seventh pivot axis 307.

[0152] The first connecting rod 331, the third connecting rod 333, the fourth connecting rod 334 and the hinged arm 32 form a quadrilateral, that is, the axis of the second pivot axis 302, the axis of the third pivot axis 303, the axis of the sixth pivot axis 306 and the axis of the seventh pivot axis 307 are connected to form a quadrilateral.

[0153] The fixed seat 31, the first connecting rod 331, the second connecting rod 332 and the third connecting rod 333 form a quadrilateral, that is, the axis of the second pivot axis 302, the axis of the first pivot axis 301, the axis of the fourth pivot axis 304 and the axis of the fifth pivot axis 305 are connected to form a quadrilateral.

[0154] Reference Figure 6 In some possible implementation manners of the embodiments of the present application, the transmission assembly 33 can include the first connecting rod 331, the second connecting rod 332, the third connecting rod 333 and the fourth connecting rod 334.

[0155] The first connecting rod 331 has a first end, and the first end of the first connecting rod 331 is pivotally connected with the fixed seat 31.

[0156] The second link 332 has a first end, and the first end of the second link 332 is farther away from the front wall of the cabinet 1 than the first end of the first link 331. The front wall of the cabinet 1 refers to the side of the cabinet 1 facing the door body 2. The first end of the second link 332 is pivotally connected with the fixed seat 31.

[0157] The third link 333 has a first end, and the first end of the third link 333 is pivotally connected with the hinge arm 32.

[0158] The fourth link 334 has a first end, and the first end of the fourth link 334 is closer to the side wall of the cabinet 1 near the fixed seat 31 than the first end of the third link 333. The side wall of the cabinet 1 refers to the two sides of the cabinet 1 along the width direction X. The first end of the fourth link 334 is pivotally connected with the hinge arm 32.

[0159] The first link 331 has a second end, and the second end of the first link 331 is located at the other end of the first link 331 along the extension direction of the first link 331 from the first end of the first link 331.

[0160] The fourth link 334 has a second end, and the second end of the fourth link 334 is located at the other end of the fourth link 334 along the extension direction of the fourth link 334 from the first end of the fourth link 334. The second end of the fourth link 334 is pivotally connected with the second end of the first link 331.

[0161] The second link 332 has a second end, and the second end of the second link 332 is located at the other end of the second link 332 along the extension direction of the second link 332 from the first end of the second link 332. The second end of the second link 332 is pivotally connected with the fourth link 334, and the projection of the second end of the second link 332 on the fourth link 334 is located between the first end of the fourth link 334 and the second end of the fourth link 334.

[0162] The third link 333 has a second end, and the second end of the third link 333 is located at the other end of the third link 333 along the extension direction of the third link 333 from the first end of the third link 333. The second end of the third link 333 is pivotally connected with the second link 332, and the projection of the second end of the third link 333 on the second link 332 is located between the first end of the second link 332 and the second end of the second link 332.

[0163] The first link 331 and the second link 332 are both pivotally connected with the fixed seat 31. The first link 331 is closer to the front wall of the cabinet 1 than the second link 332. The third link 333 and the fourth link 334 are both pivotally connected with the hinge arm 32. The third link 333 is closer to the side wall of the cabinet 1 near the fixed seat 31 than the fourth link 334.

[0164] The first connecting rod 331 and the second connecting rod 332 are also pivotally connected with the fourth connecting rod 334. The first connecting rod 331, the second connecting rod 332, the fixed seat 31 and the fourth connecting rod 334 enclose a quadrilateral. The second end of the third connecting rod 333 is pivotally connected with the second connecting rod 332. The hinge arm 32, the second connecting rod 332, the third connecting rod 333 and the fourth connecting rod 334 enclose a quadrilateral.

[0165] The second connecting rod 332 can rotate about the axis of the second pivot shaft 302 relative to the fourth connecting rod 334. The hinge arm 32 can rotate about the axis of the third pivot shaft 303 relative to the third connecting rod 333. The third connecting rod 333 can rotate about the axis of the first pivot shaft 301 relative to the second connecting rod 332. The second connecting rod 332 can rotate about the axis of the fourth pivot shaft 304 relative to the fixed seat 31. The first connecting rod 331 can rotate about the axis of the fifth pivot shaft 305 relative to the fixed seat 31. The fourth connecting rod 334 can rotate about the axis of the sixth pivot shaft 306 relative to the first connecting rod 331. The hinge arm 32 can rotate about the axis of the seventh pivot shaft 307 relative to the fourth connecting rod 334.

[0166] The first connecting rod 331, the second connecting rod 332, the fixed seat 31 and the fourth connecting rod 334 enclose a quadrilateral, that is, the axis of the second pivot shaft 302, the axis of the fourth pivot shaft 304, the axis of the fifth pivot shaft 305 and the axis of the sixth pivot shaft 306 are connected to enclose a quadrilateral.

[0167] The hinge arm 32, the second connecting rod 332, the third connecting rod 333 and the fourth connecting rod 334 enclose a quadrilateral, that is, the axis of the first pivot shaft 301, the axis of the second pivot shaft 302, the axis of the third pivot shaft 303 and the axis of the seventh pivot shaft 307 are connected to enclose a quadrilateral.

[0168] With reference to Figure 5 and Figure 6 , in the process of opening, the hinge 3 changes position under the restraint of the two quadrilaterals formed by itself, drives the door body 2 to open along the set trajectory, increases the opening angle of the door body 2, and reduces the possibility of interference between the door body 2 and the cabinet 4.

[0169] The following embodiments take the hinge shown in Figure 5 as an example to describe the structure of the refrigerator of the embodiments of the present application.

[0170] In some possible implementation manners of the embodiments of the present application, with reference to Figures 7-11 , in the process of opening, the hinge 3 changes position under the restraint of the two quadrilaterals, drives the hinge arm 32 to move outward along the depth direction Y of the refrigerator and move outward along the width direction X of the refrigerator, thereby driving the door body 2 to also move outward along the depth direction Y of the refrigerator and move outward along the width direction X of the refrigerator.

[0171] It should be noted that outward along the depth direction Y of the refrigerator refers to the direction along the depth direction Y of the refrigerator from the cabinet 1 to the fixed seat 31, for example, the positive direction of the direction Y shown in FIG. 6. Outward along the width direction X of the refrigerator refers to the direction along the width direction X of the refrigerator from the cabinet 1 to the cabinet 4, for example, the positive direction of the direction X shown in FIG. 6. Figure 5 Figure 5

[0172] In this way, not only can the maximum door opening angle of the door body 2 be increased, for example, the maximum door opening angle of the door body 2 is greater than 90°, and the possibility of the door body 2 blocking the accommodation cavity is reduced, but also the second connecting rod 332 and the third connecting rod 333 form an avoidance area, which can avoid the edge 42 of the cabinet 4 after the door body 2 is opened at an angle greater than 90°, and the possibility of interference between the door body 2 and the cabinet 4 during opening is reduced.

[0173] In some possible implementation manners of the embodiments of the present application, referring to Figures 7-11 , the hinge 3 can include a spring 34. The spring 34 has elasticity, and the spring 34 will be elastically deformed and have elastic force under the action of an external force.

[0174] In some possible implementation manners of the embodiments of the present application, the spring 34 can be a leaf spring, which has simple structure, reliable work, low cost and convenient maintenance.

[0175] The spring 34 is arranged on the third connecting rod 333. One side of the spring 34 faces the second connecting rod 332, and the other side of the spring 34 faces the fourth connecting rod 334.

[0176] In some possible implementation manners of the embodiments of the present application, the spring 34 can have a first end 341. The first end 341 of the spring 34 is located at one end of the extension direction of the spring 34.

[0177] In some possible implementation manners of the embodiments of the present application, the first end 341 of the spring 34 can be arranged around the second pivot shaft 302, so as to reduce the assembly difficulty of the first end 341 of the spring 34 and the second pivot shaft 302.

[0178] In some possible implementation manners of the embodiments of the present application, the spring 34 can have a second end 342. The second end 342 of the spring 34 and the first end 341 of the spring 34 are respectively located at two ends of the extension direction of the spring 34.

[0179] In some possible implementation manners of the embodiments of the present application, the second end 342 of the spring 34 can be arranged around the third pivot shaft 303, so as to reduce the assembly difficulty of the second end 342 of the spring 34 and the third pivot shaft 303.

[0180] ​​In some possible implementations of the embodiments of the present application, the circumferential side wall of the end of the second connecting rod 332 facing away from the fixing seat 31 can be constructed with a pressing portion 335, that is, the circumferential side wall of the second end of the second connecting rod 332 can be constructed with a pressing portion 335.

[0181] During the opening or closing process of the door body 2 , the elastic piece 34 presses against the pressing portion 335 within at least a partial angular range, thereby generating elastic deformation to damp the movement of the hinge 3 .

[0182] During the process of opening or closing the door body 2, when the spring piece 34 is pressed against the pressing part 335, the spring piece 34 is squeezed by the pressing part 335 to elastically deform and exerts an elastic force F on the pressing part 335. The direction of the elastic force F is from the spring piece 34 to the pressing part 335. The elastic force F increases the pressure between the spring piece 34 and the pressing part 335, thereby increasing the friction resistance of rotation between the spring piece 34 and the pressing part 335, and then achieving a certain damping effect on the movement of the hinge 3.

[0183] When the door body 2 is opened to a certain door opening angle and the external door opening force or door closing force applied to the door body 2 is released, the damping effect from the spring piece 34 can buffer at least part of the door opening force or door closing force, thereby reducing the angle at which the door body 2 continues to rotate under the influence of inertia, deadweight or manufacturing deviation.

[0184] In some possible implementations of the embodiments of the present application, if the thickness of the spring piece 34 is less than 1.5 mm, since the carbon content of spring steel is usually higher than that of ordinary steel, usually between 0.6% and 1.2%, the material properties are relatively brittle. For example, when the door is closed, the spring piece 34 is prone to fatigue fracture.

[0185] In some possible implementations of the embodiment of the present application, the thickness of the spring 34 is greater than or equal to 1.5 mm, so that the service life of the spring 34 can be extended.

[0186] In some possible implementations of the embodiments of the present application, if the thickness of the spring piece 34 is greater than 2.5 mm, the strength of the spring piece 34 is too high, resulting in difficulty in opening or closing the door when the spring piece 34 and the pressing portion 335 are pressed together, making the hinge 3 inconvenient to use.

[0187] In some possible implementations of the embodiment of the present application, the thickness of the spring piece 34 is greater than or equal to 1.5 mm and less than or equal to 2.5 mm, which can not only extend the service life of the spring piece 34, but also make the hinge 3 more labor-saving when used.

[0188] In some possible implementations of the embodiment of the present application, if the ratio of the thickness of the spring 34 to the expanded length of the spring 34 is less than or equal to 0.03, the spring 34 is easy to produce.

[0189] In some possible implementation manners of the embodiments of the present application, the ratio of the thickness of the elastic sheet 34 to the unfolded length of the elastic sheet 34 is greater than or equal to 0.01 and less than or equal to 0.03, for example, the thickness of the elastic sheet 34 is 2 mm, and the unfolded length of the elastic sheet 34 is 50 mm, 100 mm or 150 mm, so that the production and manufacturing of the elastic sheet 34 are facilitated, and the service life of the elastic sheet 34 is prolonged.

[0190] The material of the elastic sheet 34 contains manganese, and if the ratio of the thickness of the elastic sheet 34 to the unfolded length of the elastic sheet 34 is too large or too small, the elastic sheet 34 is difficult to be bent and formed due to the influence of its own elasticity, and the size deviation after forming is large.

[0191] In some possible implementation manners of the embodiments of the present application, referring to Figures 7-24 The pressing part 335 can include a curved segment 336.

[0192] In the process of opening or closing the door body 2, when the elastic sheet 34 is in abutting pressure cooperation with the curved segment 336, the elastic sheet 34 is elastically deformed by being extruded by the curved segment 336 and exerts an elastic force F on the curved segment 336, the direction of the elastic force F is from the elastic sheet 34 to the curved segment 336, the elastic force F increases the pressure between the elastic sheet 34 and the curved segment 336, thereby increasing the frictional resistance between the elastic sheet 34 and the curved segment 336, and further achieving a certain damping effect on the movement of the hinge 3.

[0193] In some possible implementation manners of the embodiments of the present application, the curved segment 336 can be a circular arc, and the curved segment 336 can also have a certain deviation with respect to the circular arc, as long as the curved segment 336 as a whole conforms to the rule of rotating around the axis of the first pivot shaft 301 in the process of rotating the door body 2.

[0194] In the implementation manner in which the curved segment 336 is a circular arc, the axis corresponding to the curved segment 336 can be collinear with the axis of the first pivot shaft 301.

[0195] In the process of rotating the door body 2, when the elastic sheet 34 is in abutting pressure cooperation with the curved segment 336, the direction of the elastic force F of the elastic sheet 34 on the curved segment 336 is from the elastic sheet 34 to the curved segment 336 and to the first pivot shaft 301, so that the force arm of the elastic force F from the rotation axis of the first pivot shaft 301 is small, and the elastic force F is not easy to generate a force arm to rotate the second connecting rod 332 around the first pivot shaft 301, after the opening door external force or the closing door external force applied on the door body 2 is removed, the elastic sheet 34 is not easy to form a closing door or opening door assisting force, and the elastic sheet 34 only achieves a certain damping effect on the movement of the hinge 3.

[0196] It should be noted that the direction of the elastic force F directed to the first pivot shaft 301 can be the direction of the elastic force F passing through the axis of the first pivot shaft 301, or the direction of the elastic force F can have a certain deviation relative to the axis of the first pivot shaft 301, as long as the elastic force F does not easily generate a force arm that makes the second connecting rod 332 rotate about the first pivot shaft 301.

[0197] In some possible implementation manners of the embodiments of the present application, during the process that the door body 2 is opened from the first set angle to the second set angle (the second set angle is greater than the first set angle), the curved section 336 abuts against the elastic sheet 34. During this process, after the external force for opening the door body 2 is removed, the elastic sheet 34 has a certain damping effect on the movement of the hinge 3.

[0198] In some possible implementation manners of the embodiments of the present application, referring to Figures 7-11 , the first set angle can be 0°, and the second set angle can be the maximum opening angle of the refrigerator. At this time, the second set angle is greater than 90°, so that the elastic sheet 34 has a damping effect on the movement of the hinge 3 when the refrigerator is opened at any angle.

[0199] In some possible implementation manners of the embodiments of the present application, referring to Figures 13-17 , the first set angle can be greater than 0°, and the second set angle can be the maximum opening angle of the refrigerator. In this way, the elastic sheet 34 has a damping effect on the movement of the hinge 3 when the refrigerator is opened at an angle greater than or equal to the first set angle.

[0200] In some possible implementation manners of the embodiments of the present application, referring to Figures 20-24 , the first set angle can be greater than 0°, and the second set angle can be equal to 90°. In this way, the elastic sheet 34 has a damping effect on the movement of the hinge 3 when the refrigerator is opened at an angle between the first set angle and 90°.

[0201] In some possible implementation manners of the embodiments of the present application, referring to Figures 12-17 , the abutting portion 335 can include a first edge 337. The first edge 337 can be away from the front wall of the cabinet 1.

[0202] During the closing process of the door body 2, when the elastic sheet 34 abuts against the first edge 337, the elastic force F of the elastic sheet 34 has a force arm that makes the second end of the second connecting rod 332 rotate about the first pivot shaft 301 towards the front wall of the cabinet 1, so that the elastic force F forms a closing assist force, thereby reducing the external force required for closing the door body 2 and making it more labor-saving to close the door body 2.

[0203] In some possible implementation manners of the embodiments of the present application, referring to Figure 13The elastic piece 34 has two mutually perpendicular components of the elastic force F on the first edge 337, one component F1 is directed along the axis of the first pivot shaft 301, and the other component F2 is directed towards the first connecting rod 331.

[0204] The component F2 of the elastic piece 34 directed towards the first connecting rod 331 has a force arm for rotating the second connecting rod 332 about the first pivot shaft 301 towards the front wall of the cabinet 1, so that the component F2 can push the first edge 337 towards the first connecting rod 331, and rotate the second end of the second connecting rod 332 towards the front wall of the cabinet 1, drive the door body 2 to rotate towards the front wall of the cabinet 1, form a door closing assisting force, and reduce the external force required for closing the door body 2, so that the door body 2 is easier to close.

[0205] The component F1 of the elastic piece 34 directed along the axis of the first pivot shaft 301 does not have a force arm for rotating the second connecting rod 332 about the first pivot shaft 301, so that the component F1 increases the pressure between the elastic piece 34 and the first edge 337, and increases the rotating friction resistance between the elastic piece 34 and the first edge 337, and further damp the movement of the hinge 3. After the closing external force applied to the door body 2 is removed, the damping effect of the elastic piece 34 can buffer at least part of the opening force or the closing force, so that the door body 2 slowly closes, reduces the closing speed of the door body 2, reduces the possibility of the refrigerator shaking or the door body 2 being damaged due to the closing speed of the door body 2 being too fast, and also reduces the possibility of hand being pinched due to the closing speed of the door body 2 being too fast.

[0206] In some possible implementation manners of the embodiments of the present application, the distance between the first edge 337 and the axis of the first pivot shaft 301 gradually decreases from the end away from the fourth pivot shaft 304 to the end close to the fourth pivot shaft 304. During the closing process of the door body 2, the elastic piece 34 first abuts against the end of the first edge 337 away from the fourth pivot shaft 304, and then abuts against the end of the first edge 337 close to the fourth pivot shaft 304 as the door body 2 gradually closes. Since the distance between the first edge 337 and the axis of the first pivot shaft 301 gradually decreases from the end away from the fourth pivot shaft 304 to the end close to the fourth pivot shaft 304, the compression amount of the elastic piece 34 by the first edge 337 gradually decreases as the door body 2 gradually closes, and the damping effect of the elastic piece 34 on the hinge 3 and the door closing assisting force in the closed state of the door body 2 are reduced, so that the opening force required for opening the closed door body 2 is reduced, and the door body 2 is easier to open.

[0207] In some possible implementation manners of the embodiments of the present application, the distance between the first edge 337 and the axis of the first pivot shaft 301 gradually decreases from the end away from the fourth pivot shaft 304 to the end close to the fourth pivot shaft 304. During the closing process of the door body 2, the elastic piece 34 first abuts against the end of the first edge 337 away from the fourth pivot shaft 304, and then abuts against the end of the first edge 337 close to the fourth pivot shaft 304 as the door body 2 gradually closes. Since the distance between the first edge 337 and the axis of the first pivot shaft 301 gradually decreases from the end away from the fourth pivot shaft 304 to the end close to the fourth pivot shaft 304, the compression amount of the elastic piece 34 by the first edge 337 gradually decreases as the door body 2 gradually closes, and the damping effect of the elastic piece 34 on the hinge 3 and the door closing assisting force in the closed state of the door body 2 are reduced, so that the opening force required for opening the closed door body 2 is reduced, and the door body 2 is easier to open. Figure 12 、 Figure 13 、 Figure 19 and Figure 20When the door opening angle of the door body 2 is within the third set angle, the first edge 337 abuts against the elastic sheet 34, and the elastic sheet 34 provides assistance for closing of the door body 2.

[0208] In some possible implementation manners of the embodiments of the present application, the third set angle can be greater than 0° and less than or equal to 30°, so that the elastic sheet 34 can provide assistance for closing of the door body 2 when the door body 2 is opened to a small angle within 30° and the external force is removed.

[0209] In some possible implementation manners of the embodiments of the present application, referring to Figure 18 , Figure 19 and Figure 20 , the first edge 337 can include a first curved surface 3371. The elastic force F of the elastic sheet 34 on the first curved surface 3371 has a force arm for rotating the second end of the second connecting rod 332 about the first pivot shaft 301 towards the front wall of the cabinet 1, so that the elastic sheet 34 has a certain door closing assistance for the door body 2.

[0210] The first curved surface 3371 can be convex towards the elastic sheet 34. Compared with the implementation manner that the first curved surface 3371 is concave away from the elastic sheet 34, the first curved surface 3371 is convex towards the elastic sheet 34, so as to facilitate abutting cooperation of different positions on the elastic sheet 34 and the first curved surface 3371, improve the contact rate of each position of the elastic sheet 34 and the first curved surface 3371, reduce the possibility that the elastic sheet 34 and part of the first curved surface 3371 cannot be abutted, and improve the stability when the first curved surface 3371 and the elastic sheet 34 are abutted.

[0211] In some possible implementation manners of the embodiments of the present application, the first curved surface 3371 can be a circular arc surface, so that the distance between the first curved surface 3371 and the axis of the first pivot shaft 301 increases smoothly from one end of the first curved surface 3371 away from the front wall of the cabinet 1 to the end close to the front wall of the cabinet 1, and the change range of the damping effect of the elastic sheet 34 on the hinge 3 in the process of rotating the door body 2 is reduced, so that the door body 2 is more smooth when opening or closing the door.

[0212] In some possible implementation manners of the embodiments of the present application, the first edge 337 can include a first flat surface 3372. The elastic force F of the elastic sheet 34 on the first flat surface 3372 has a force arm for rotating the second end of the second connecting rod 332 about the first pivot shaft 301 towards the front wall of the cabinet 1, so that the elastic sheet 34 has a certain door closing assistance for the door body 2.

[0213] In some possible implementation manners of the embodiments of the present application, referring to Figures 18-24 , the abutting part 335 can include a second edge 338. The second edge 338 can be towards the front wall of the cabinet 1.

[0214] When the elastic sheet 34 is in abutting engagement with the second edge 338 during the opening of the door body 2, the elastic force F of the elastic sheet 34 on the second edge 338 has a force arm to rotate the second end of the second connecting rod 332 away from the front wall of the cabinet 1 about the first pivot axis 301, and the elastic force F forms an opening assisting force, thereby reducing the external force required during the opening of the door body 2 and making the opening process of the door body 2 more labor-saving.

[0215] In some possible implementation manners of the embodiments of the present application, referring to Figure 24 When the elastic sheet 34 is in abutting engagement with the second edge 338 during the opening of the door body 2, the elastic force F of the elastic sheet 34 on the second edge 338 has two mutually perpendicular components, one component F1 is in the direction of the axis of the first pivot axis 301, and the other component F2 is away from the front wall of the cabinet 1.

[0216] The component F2 away from the front wall of the cabinet 1 has a force arm to rotate the second connecting rod 332 away from the front wall of the cabinet 1 about the first pivot axis 301, and thus the component F2 can push the second edge 338 away from the front wall of the cabinet 1, rotate the second end of the second connecting rod 332 away from the front wall of the cabinet 1, drive the door body 2 to rotate away from the front wall of the cabinet 1, form an opening assisting force, thereby reducing the external force required during the opening of the door body 2 and making the opening process of the door body 2 more labor-saving.

[0217] The component F1 in the direction of the axis of the first pivot axis 301 does not have a force arm to rotate the second connecting rod 332 about the first pivot axis 301, and thus the component F1 increases the pressure between the elastic sheet 34 and the second edge 338, thereby increasing the rotating friction resistance between the elastic sheet 34 and the second edge 338, and further realizing a certain damping effect on the movement of the hinge 3. When the opening external force applied to the door body 2 is removed, the damping effect from the elastic sheet 34 can buffer at least part of the opening force or closing force, so that the door body 2 can be slowly opened.

[0218] In some possible implementation manners of the embodiments of the present application, the distance between the second edge 338 and the axis of the first pivot shaft 301 gradually decreases from the end of the fourth pivot shaft 304 far away to the end of the fourth pivot shaft 304 close. During the opening of the door body 2, the elastic sheet 34 first abuts against the end of the second edge 338 far away from the fourth pivot shaft 304, and as the opening angle of the door body 2 gradually increases, the elastic sheet 34 gradually abuts against the end of the second edge 338 close to the fourth pivot shaft 304. Since the distance between the second edge 338 and the axis of the first pivot shaft 301 gradually decreases from the end of the fourth pivot shaft 304 far away to the end of the fourth pivot shaft 304 close, as the opening angle of the door body 2 gradually increases, the compression amount of the second edge 338 to the elastic sheet 34 gradually decreases, and the damping effect and the opening assisting force of the elastic sheet 34 to the hinge 3 also gradually decrease, thereby reducing the resistance of the door body when the door body is closed at the position where the elastic sheet 34 abuts against the end of the second edge 338 close to the fourth pivot shaft 304.

[0219] In some possible implementation manners of the embodiments of the present application, referring to Figure 23 and Figure 24 , when the opening angle of the door body 2 is between the fourth set angle and the fifth set angle, the second edge 338 abuts against the elastic sheet 34 to provide the opening assisting force of the elastic sheet 34 to the door body 2.

[0220] In some possible implementation manners of the embodiments of the present application, the fourth set angle can be greater than 0°. The fifth set angle is greater than the fourth set angle. The fifth set angle is less than or equal to the maximum opening angle of the door body 2.

[0221] In some possible implementation manners of the embodiments of the present application, referring to Figure 18 , Figure 19 and Figure 20 , the second edge 338 can include a second curved surface 3381. The elastic force F of the elastic sheet 34 to the second curved surface 3381 has a force arm for rotating the second end of the second connecting rod 332 away from the front wall of the cabinet 1 around the first pivot shaft 301, so that the elastic sheet 34 has a certain opening assisting force to the door body 2.

[0222] The second curved surface 3381 can protrude towards the elastic sheet 34. Compared with the implementation manner that the second curved surface 3381 is concave away from the elastic sheet 34, the second curved surface 3381 protrudes towards the elastic sheet 34, so as to facilitate the abutting cooperation of different positions on the elastic sheet 34 and the second curved surface 3381, improve the contact rate of each position of the elastic sheet 34 and the second curved surface 3381, reduce the possibility that the elastic sheet 34 cannot abut against part of the second curved surface 3381, and improve the stability when the elastic sheet 34 and the second curved surface 3381 abut against each other.

[0223] In some possible implementation manners of the embodiments of the present application, the second curved surface 3381 can be a circular arc surface, so that the distance between the second curved surface 3381 and the axis of the first pivot shaft 301 increases smoothly from one end of the second curved surface 3381 close to the fourth pivot shaft 304 to the other end of the second curved surface 3381 away from the fourth pivot shaft 304, and the change range of the damping effect of the spring sheet 34 on the hinge 3 is reduced during the rotation of the door body 2, so that the door body 2 is more smooth when opening or closing the door.

[0224] In some possible implementation manners of the embodiments of the present application, the second edge 338 can include a second plane 3382. The elastic force F of the spring sheet 34 on the second plane 3382 has a force arm for rotating the second end of the second connecting rod 332 away from the front wall of the cabinet 1 around the first pivot shaft 301, so that the spring sheet 34 has a certain opening door assisting force on the door body 2.

[0225] In some possible implementation manners of the embodiments of the present application, referring to Figures 12-17 , the abutting portion 335 can include a curved segment 336 and a first edge 337. The first edge 337 is farther away from the front wall of the cabinet 1 than the curved segment 336.

[0226] During the gradual opening of the door body 2 from the closed state, the spring sheet 34 abuts against the first edge 337 and the curved segment 336 in sequence.

[0227] During the gradual closing of the door body 2, the spring sheet 34 abuts against the first edge 337 and the curved segment 336 in sequence.

[0228] During the abutting of the spring sheet 34 against the first edge 337 and the curved segment 336, the spring sheet 34 can have a certain damping effect on the movement of the hinge 3 to buffer part of the opening door force or the closing door force and reduce the rotation angle of the door body 2 after the external force is removed.

[0229] In addition, when the spring sheet 34 abuts against the first edge 337, the spring sheet 34 has a force arm for rotating the second connecting rod 332 toward the front wall of the cabinet 1 around the first pivot shaft 301, thereby providing a certain assisting force for closing the door body 2, reducing the external force required in the process of closing the door body 2, and making the process of closing the door body 2 more labor-saving.

[0230] In some possible implementation manners of the embodiments of the present application, the first edge 337 can be adjacent to the curved segment 336, that is, the third set angle can be equal to the first set angle, so as to improve the continuity of the damping effect of the spring sheet 34 on the hinge 3.

[0231] In some possible implementation manners of the embodiments of the present application, during the opening of the door body 2, referring to Figure 13 and Figures 14-17In the process that the door body 2 is opened from the first set angle to the second set angle, the elastic sheet 34 and the curved segment 336 are matched with each other to provide damping effect for the opening process of the hinge 3, and the second set angle can be between 90° and the maximum opening angle of the door body 2.

[0232] The first set angle can be greater than 0° and less than or equal to 30°.

[0233] With reference to Figures 14-17 In the process that the door body 2 is opened from the first set angle to the second set angle, the elastic sheet 34 and the curved segment 336 are matched with each other to provide damping effect for the opening process of the hinge 3, and the second set angle can be between 90° and the maximum opening angle of the door body 2.

[0234] The second set angle is greater than the first set angle and less than or equal to the maximum opening angle of the door body 2.

[0235] In some possible implementation manners of the embodiment, in the process that the door body 2 is closed, with reference to Figure 13 In the process that the door body 2 is closed from the second set angle to the first set angle, the elastic sheet 34 and the curved segment 336 are matched with each other to provide damping effect for the closing process of the hinge 3, and the second set angle can be between 90° and the maximum opening angle of the door body 2.

[0236] With reference to Figure 14 and Figures 18-24 In the process that the door body 2 is gradually closed from the first set angle to the closed state, the elastic sheet 34 and the first edge 337 are matched with each other to provide damping effect and door closing assistance for the closing process of the hinge 3.

[0237] In some possible implementation manners of the embodiment, the first edge 337 protrudes towards the elastic sheet 34. The first edge 337 can be a circular arc surface. The curved segment 336 can be a circular arc. The tangent line of the one end of the first edge 337 close to the curved segment 336 and the tangent line of the one end of the curved segment 336 close to the first edge 337 can be collinear, so that the distance between the one end of the first edge 337 close to the curved segment 336 and the axis of the first pivot shaft 301 is equal to the distance between the curved segment 336 and the axis of the first pivot shaft 301, the elastic force of the elastic sheet 34 on the critical position of the first edge 337 and the curved segment 336 is consistent with the elastic force on the curved segment 336, so that the elastic sheet 34 is more smooth when transitioning from the first edge 337 to the curved segment 336, and the door body 2 is more smooth in the process of rotating.

[0238] In some possible implementation manners of the embodiments of the present application, the radius corresponding to the first edge 337 can be smaller than the radius corresponding to the curved segment 336. Since the first edge 337 and the curved segment 336 are both located on the circumferential sidewall of the second end of the second connecting rod 332, and the axis of the curved segment 336 is collinear with the axis of the first pivot shaft 301, the bending degree of the first edge 337 increases when the radius corresponding to the first edge 337 is smaller than the radius of the curved segment 336, under the premise that the arc length corresponding to the first edge 337 is unchanged, the compression amount of the elastic sheet 34 to the first edge 337 will increase, thereby increasing the elastic force of the elastic sheet 34 to the first edge 337, and the component force F2 (door closing assisting force) of the elastic force also increases, thereby increasing the assisting force to the closing of the door body 2.

[0239] In some possible implementation manners of the embodiments of the present application, referring to Figure 21 , the abutting portion 335 can include the curved segment 336 and a second edge 338. The second edge 338 is closer to the front wall of the cabinet 1 than the curved segment 336.

[0240] In the process of gradually opening the door body 2 from the closed state, the elastic sheet 34 abuts against the curved segment 336 and the second edge 338 in sequence.

[0241] In the process of gradually closing the door body 2, the elastic sheet 34 abuts against the second edge 338 and the curved segment 336 in sequence.

[0242] In the process of the elastic sheet 34 abutting against the curved segment 336 and the second edge 338, the elastic sheet 34 can dampen the movement of the hinge 3 to some extent, thereby buffering part of the opening force or closing force, and reducing the rotation angle of the door body 2 after the external force is removed.

[0243] In addition, when the elastic sheet 34 abuts against the second edge 338, the elastic sheet 34 has a force arm to rotate the second connecting rod 332 away from the front wall of the cabinet 1 about the first pivot shaft 301, thereby providing a certain assisting force to the opening of the door body 2, reducing the external force required in the process of opening the door body 2, and making the process of opening the door body 2 more labor-saving.

[0244] In some possible implementation manners of the embodiments of the present application, the second edge 338 can be adjacent to the curved segment 336, that is, the fourth set angle can be equal to the second set angle, to improve the continuity of the damping effect of the elastic sheet 34 to the hinge 3.

[0245] In some possible implementation manners of the embodiments of the present application, in the process of opening the door body 2, referring to Figure 22 , Figure 23 and Figure 23, the elastic sheet 34 and the curved segment 336 are in abutting pressure cooperation with each other to provide damping effect for the opening process of the hinge 3.

[0246] The first set angle can be greater than 0°, and the second set angle is greater than the first set angle and less than the maximum opening angle of the door body 2. For example, the second set angle can be equal to 90°.

[0247] Reference Figure 24 and Figures 18-24 , the elastic sheet 34 and the second edge 338 are in abutting pressure cooperation with each other to provide damping effect and opening assistance for the opening process of the hinge 3.

[0248] The fifth set angle is greater than the second set angle and less than or equal to the maximum opening angle of the door body 2.

[0249] In some possible implementation manners of the embodiments of the present application, in the closing process of the door body 2, the elastic sheet 34 is in abutting pressure cooperation with the second edge 338 and the curved segment 336 in turn in the process that the door body 2 is closed from the fifth set angle to the first set angle, to provide damping effect for the closing process of the hinge 3.

[0250] In some possible implementation manners of the embodiments of the present application, reference Figures 7-11 The abutting portion 335 can include the curved segment 336, the first edge 337 and the second edge 338. The first edge 337 is farther away from the front wall of the cabinet 1 than the curved segment 336. The second edge 338 is closer to the front wall of the cabinet 1 than the curved segment 336.

[0251] In the process that the door body 2 is gradually opened from the closed state, the elastic sheet 34 is in abutting pressure cooperation with the first edge 337, the curved segment 336 and the second edge 338 in turn.

[0252] In the process that the door body 2 is gradually closed, the elastic sheet 34 is in abutting pressure cooperation with the second edge 338, the curved segment 336 and the first edge 337 in turn.

[0253] In the process that the elastic sheet 34 is in abutting pressure cooperation with the first edge 337, the curved segment 336 and the second edge 338, certain damping effect can be achieved for the movement of the hinge 3, to buffer part of the opening force or closing force, and to reduce the rotation angle of the door body 2 after the external force is removed.

[0254] When the elastic sheet 34 is in abutting pressure cooperation with the first edge 337, the elastic sheet 34 has a force arm to make the second connecting rod 332 rotate around the first pivot shaft 301 towards the front wall of the cabinet 1, thereby providing certain assistance for the closing of the door body 2, reducing the external force required in the process of closing the door body 2, and making the process of closing the door body 2 more labor-saving.

[0255] When the elastic sheet 34 is in abutting contact with the second edge 338, the elastic sheet 34 has a force arm for rotating the second connecting rod 332 away from the front wall of the cabinet 1 about the first pivot shaft 301, thereby providing a certain assisting force for opening the door body 2, reducing the external force required in the process of opening the door body 2, and making the process of opening the door body 2 more labor-saving.

[0256] In some possible implementation manners of the embodiments of the present application, referring to Figures 13-17 , Figure 25 and Figures 20-24 , the elastic sheet 34 can be recessed in a direction away from the abutting portion 335, so as to simplify the structure of the elastic sheet 34 and facilitate the processing and manufacturing of the elastic sheet 34.

[0257] In some possible implementation manners of the embodiments of the present application, referring to Figures 26-37 , Figures 38-44 , the elastic sheet 34 can include a matching protrusion 343. The matching protrusion 343 protrudes towards the abutting portion 335. The matching protrusion 343 can be formed by bending the elastic sheet 34. The matching protrusion 343 is used for abutting contact with the abutting portion 335 in the process of rotating the door body 2.

[0258] In the case that the length between the first end 341 and the second end 342 of the elastic sheet 34 is unchanged, the construction of the matching protrusion 343 on the elastic sheet 34 can increase the unfolded length of the elastic sheet 34, thereby increasing the deformation amount of the elastic sheet 34, and further increasing the elastic force of the matching protrusion 343 on the abutting portion 335, and improving the damping effect, the closing assisting force and the opening assisting force of the elastic sheet 34 on the door body 2.

[0259] In some possible implementation manners of the embodiments of the present application, referring to Figures 27-44 , the elastic sheet 34 can be constructed with a matching section 347. The matching section 347 is in abutting contact with the abutting portion 335 in at least a part of the angle range in the process of opening the door body 2, thereby generating elastic deformation and exerting an elastic force F on the abutting portion 335. The direction of the elastic force F is from the matching section 347 to the abutting portion 335. The elastic force F increases the pressure between the matching section 347 and the abutting portion 335, thereby increasing the frictional resistance between the elastic sheet 34 and the abutting portion 335, and further realizing a certain damping effect on the movement of the hinge 3.

[0260] When the door body 2 is opened to a certain opening angle and the opening external force or the closing external force applied on the door body 2 is removed, the damping effect from the elastic sheet 34 can buffer at least part of the opening force or the closing force, thereby reducing the angle of the continued rotation of the door body 2 under the influence of inertia, self-weight or manufacturing deviation, etc.

[0261] In some possible implementation manners of the embodiments of the present application, the matching section 347 can be recessed in a direction away from the abutting portion 335.

[0262] In some possible implementation manners of the embodiments of the present application, when the fitting section 347 and the abutting portion 335 abut against each other, the fitting section 347 and the abutting portion 335 can at least partially abut against each other, i.e., the fitting section 347 and the abutting portion 335 are in surface contact, so as to increase the contact area between the fitting section 347 and the abutting portion 335, and further increase the frictional resistance between the fitting section 347 and the abutting portion 335, thereby improving the damping effect of the elastic sheet 34 on the movement of the hinge 3.

[0263] In some possible implementation manners of the embodiments of the present application, referring to Figures 33-37 , the elastic sheet 34 can be configured with an auxiliary protrusion 344. The auxiliary protrusion 344 protrudes away from the fourth connecting rod 334.

[0264] The auxiliary protrusion 344 can be formed by bending a part of the elastic sheet 34 towards the second connecting rod 332, so as to configure the auxiliary protrusion 344 on the elastic sheet 34.

[0265] In some possible implementation manners of the embodiments of the present application, the auxiliary protrusion 344 can be located between the fitting section 347 or the fitting protrusion 343 and the first end 341 of the elastic sheet 34.

[0266] In some possible implementation manners of the embodiments of the present application, the auxiliary protrusion 344 can be located between the fitting section 347 or the fitting protrusion 343 and the second end 342 of the elastic sheet 34.

[0267] In the case where the length between the first end 341 and the second end 342 of the elastic sheet 34 is unchanged, configuring the auxiliary protrusion 344 on the elastic sheet 34 can increase the unfolded length of the elastic sheet 34, thereby improving the deformation amount of the elastic sheet 34 when the fitting section 347 and the abutting portion 335 abut against each other, increasing the elastic force F exerted by the elastic sheet 34 on the abutting portion 335, and improving the damping effect of the elastic sheet 34 on the movement of the hinge 3.

[0268] In some possible implementation manners of the embodiments of the present application, referring to Figures 40-44 , Figures 33-37 In some possible implementation manners of the embodiments of the present application, the auxiliary protrusion 344 can be located between the fitting section 347 or the fitting protrusion 343 and the first end 341 of the elastic sheet 34, and the side of the second connecting rod 332 facing the first connecting rod 331 can be configured with a limiting portion 339, and the auxiliary protrusion 344 is configured to limit the abutting portion 339 when the door body 2 is opened to the maximum opening angle.

[0269] In the quadrangle surrounded by the fixed seat 31, the first connecting rod 331, the second connecting rod 332 and the third connecting rod 333, as the opening angle of the door body 2 gradually increases, the included angle a between the second connecting rod 332 and the third connecting rod 333 gradually decreases, wherein the included angle a between the second connecting rod 332 and the third connecting rod 333 is the included angle formed by the axis of the second pivot shaft 302, the axis of the first pivot shaft 301 and the axis of the fourth pivot shaft 304 in sequence.

[0270] After the door body 2 is opened at a certain initial speed under the action of the external force, and the external force is removed, the door body 2 will gradually increase the opening angle under the action of inertia. Before the door body 2 is opened to the maximum opening angle, the auxiliary protruding part 344 has a spacing with the limiting part 339 and no contact occurs. As the opening angle of the door body 2 gradually increases, the spacing between the auxiliary protruding part 344 and the limiting part 339 gradually decreases. Until the door body 2 is opened to the maximum opening angle, the auxiliary protruding part 344 abuts against the limiting part 339.

[0271] When the door body 2 is opened to the maximum opening angle and still has a tendency to open, the limiting part 339 will extrude the auxiliary protruding part 344 towards the fourth connecting rod 334 and cause the auxiliary protruding part 344 to elastically deform. Since the auxiliary protruding part 344 has elasticity, after the auxiliary protruding part 344 elastically deforms, the auxiliary protruding part 344 will exert a spring force on the limiting part 339, which is directed from the auxiliary protruding part 344 to the limiting part 339. The spring force can offset at least part of the pressure from the second connecting rod 332 on the auxiliary protruding part 344, that is, buffer at least part of the opening force, thereby reducing the possibility of the included angle a between the second connecting rod 332 and the third connecting rod 333 continuing to decrease, reducing the possibility of the opening angle of the door body 2 being greater than the maximum opening angle, and also reducing the pulling between the door body 2 and the hinge arm 32 and between the cabinet 1 and the fixed seat 31 due to the opening angle of the door body 2 being too large.

[0272] In some possible implementation manners of the embodiments of the present application, referring to Figures 40-44 , the limiting part 339 can be a plane or have a certain undulation relative to the plane, as long as the limiting edge can abut against the auxiliary protruding part 344 when the opening angle of the door body 2 is the set opening angle.

[0273] In some possible implementation manners of the embodiments of the present application, referring to Figure 45 , the limiting part 339 can be recessed in a direction away from the first connecting rod 331.

[0274] Before the door body 2 is opened to the maximum opening angle, the auxiliary protrusion 344 is spaced apart from the limiting portion 339 and no contact occurs. As the opening angle of the door body 2 gradually increases, the spacing between the auxiliary protrusion 344 and the limiting portion 339 gradually decreases. Until the door body 2 is opened to the maximum opening angle, at least part of the auxiliary protrusion 344 moves into the limiting portion 339 and abuts against the limiting portion 339.

[0275] In the case where the opening force of the door body 2 is unchanged, the abutting cooperation of the auxiliary protrusion 344 and the limiting portion 339 can increase the contact area of the auxiliary protrusion 344 and the limiting portion 339, thereby dispersing the pressure of the second connecting rod 332 applied to the auxiliary protrusion 344, increasing the pressure required for the auxiliary protrusion 344 to deform, that is, increasing the opening force required for the auxiliary protrusion 344 to deform, thereby reducing the possibility of the included angle α between the second connecting rod 332 and the third connecting rod 333 continuing to decrease, and further reducing the possibility of the opening angle of the door body 2 being greater than the maximum opening angle.

[0276] Reference Figure 46 , Figure 47 and Figure 47 In some possible implementation manners of the embodiments of the present application, the third connecting rod 333 can include a first part 3331 and a second part 3332. The first part 3331 and the second part 3332 are spaced apart along the height direction Z of the refrigerator. The first part 3331 and the second part 3332 are both pivoted about the second pivot shaft 302 relative to the first connecting rod 331. The first part 3331 and the second part 3332 are both pivoted about the third pivot shaft 303 relative to the hinge arm 32. In this way, the connection strength between the third connecting rod 333 and the first connecting rod 331, and between the third connecting rod 333 and the hinge arm 32 is increased.

[0277] The end of the second connecting rod 332 away from the fixed seat 31 can extend between the first part 3331 and the second part 3332. The end of the second connecting rod 332 away from the fixed seat 31 is simultaneously pivotally connected with the first part 3331 and the second part 3332. That is, the first part 3331 and the second part 3332 are both pivoted about the first pivot shaft 301 relative to the second connecting rod 332.

[0278] The end of the second connecting rod 332 away from the fixed seat 31 can extend between the first part 3331 and the second part 3332, so that the structure of the hinge 3 is more compact, and after the second connecting rod 332 and the third connecting rod 333 are connected, the length of the hinge 3 in the height direction Z of the refrigerator is not additionally increased, so that the occupied space of the hinge 3 in the height direction Z of the refrigerator is reduced.

[0279] The elastic sheet 34 can be arranged between the first part 3331 and the second part 3332, so as to make the hinge 3 more compact, and the elastic sheet 34 does not increase the length of the hinge 3 in the height direction Z of the refrigerator after being connected with the third connecting rod 333, so as to reduce the occupied space of the hinge 3 in the height direction Z of the refrigerator.

[0280] In some possible implementation manners of the embodiments of the present application, the elastic sheet 34 can be configured with a positioning part. The positioning part can include a first protruding part 345. The first protruding part 345 can be configured at one end of the elastic sheet 34 towards the first part 3331. The first protruding part 345 can be fixedly connected to the first part 3331.

[0281] In some possible implementation manners of the embodiments of the present application, referring to Figure 46 , the first part 3331 can be provided with a first connecting hole 3333. The first protruding part 345 is inserted into the first connecting hole 3333, so as to improve the assembly strength of the elastic sheet 34 and the first part 3331.

[0282] In some possible implementation manners of the embodiments of the present application, the positioning part can include a second protruding part 346. The second protruding part 346 can be configured at one end of the elastic sheet 34 towards the second part 3332. The second protruding part 346 can be fixedly connected to the second part 3332.

[0283] In some possible implementation manners of the embodiments of the present application, referring to Figure 47 and Figure 46 , the second part 3332 can be provided with a second connecting hole 3334. The second protruding part 346 is inserted into the second connecting hole 3334, so as to improve the assembly strength of the elastic sheet 34 and the second part 3332.

[0284] In some possible implementation manners of the embodiments of the present application, referring to Figure 47 and Figure 47 , the first protruding part 345 and the second protruding part 346 can be arranged between the first pivot shaft 301 and the third pivot shaft 303. The part of the elastic sheet 34 between the one of the first protruding part 345 and the second protruding part 346 close to the first pivot shaft 301 and the first end 341 of the elastic sheet 34 and the abutting part 335 abut each other, so as to produce elastic deformation. The part of the elastic sheet 34 between the one of the first protruding part 345 and the second protruding part 346 close to the first pivot shaft 301 and the second end 342 of the elastic sheet 34 is fixed in position at both ends of the extension direction, and does not abut the abutting part 335 directly, so as to be not easy to produce elastic deformation.

[0285] The length of the part of the elastic sheet 34 between the one of the first and second protruding portions 345 and 346 close to the first pivot shaft 301 and the first end 341 of the elastic sheet 34 is reduced compared with the length of the entire elastic sheet 34, so the elasticity of this part of the elastic sheet 34 is reduced compared with the entire elastic sheet 34, and the rigidity is increased.

[0286] In some possible implementation manners of the embodiments of the present application, the first and second protruding portions 345 and 346 can be arranged between the first and second pivot shafts 301 and 302. The part of the elastic sheet 34 between the one of the first and second protruding portions 345 and 346 close to the first pivot shaft 301 and the second end 342 of the elastic sheet 34 and the abutting portion 335 abut against each other to produce elastic deformation. The part of the elastic sheet 34 between the one of the first and second protruding portions 345 and 346 close to the first pivot shaft 301 and the first end 341 of the elastic sheet 34 is fixed in position at both ends of the extension direction, and does not abut against the abutting portion 335 directly, so it is not easy to produce elastic deformation.

[0287] The length of the part of the elastic sheet 34 between the one of the first and second protruding portions 345 and 346 close to the first pivot shaft 301 and the second end 342 of the elastic sheet 34 is reduced compared with the length of the entire elastic sheet 34, so the elasticity of this part of the elastic sheet 34 is reduced compared with the entire elastic sheet 34, and the rigidity is increased.

[0288] In some possible implementation manners of the embodiments of the present application, one of the first and second protruding portions 345 and 346 is arranged between the first and third pivot shafts 301 and 303. The other of the first and second protruding portions 345 and 346 is arranged between the first and second pivot shafts 301 and 302. The part of the elastic sheet 34 between the first and second protruding portions 345 and 346 and the abutting portion 335 abut against each other to produce elastic deformation.

[0289] The part of the elastic sheet 34 between the first and second protruding portions 345 and 346 is easy to be pressed by the abutting portion 335 and produce elastic deformation. Since the length of this part of the elastic sheet 34 is reduced compared with the length of the entire elastic sheet 34, the elasticity of this part of the elastic sheet 34 is reduced compared with the entire elastic sheet 34, and the rigidity is increased.

[0290] In the above implementation manners, the rigidity of the part of the elastic sheet 34 used to cooperate with the abutting portion 335 is increased, so the resistance in the process of opening the door body 2 is increased, the damping effect of the elastic sheet 34 on the movement of the hinge 3 is improved, and the rotational speed of the door body 2 relative to the cabinet 1 after the external force for opening the door is removed can be reduced, so the rotation angle of the door body can be reduced.

[0291] In addition, the rigidity of the part of the elastic sheet 34 for cooperating with the abutting portion 335 is increased, and when the door body 2 is opened to the maximum opening angle, the resistance from the elastic sheet 34 can prevent the door body 2 from continuing to open, reducing the possibility that the opening angle of the door body 2 is greater than the maximum opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32 and between the cabinet 1 and the fixed seat 31 due to the opening angle of the door body 2 being too large.

[0292] In some possible implementation manners of the embodiments of the present application, the first protruding portion 345 can be riveted with the first part 3331, and the second protruding portion 346 can be riveted with the second part 3332, so that the elastic sheet 34, the first part 3331 and the second part 3332 are fixedly connected, simplifying the structure and assembly relationship of the elastic sheet 34, the first part 3331 and the second part 3332, thereby facilitating the production and installation of the hinge 3.

[0293] In addition, by riveting the first protruding portion 345 with the first part 3331 and the second protruding portion 346 with the second part 3332, the elastic sheet 34 is riveted with the third connecting rod 333, thereby improving the connection strength between the elastic sheet 34 and the third connecting rod 333.

[0294] Reference Figure 45 In some possible implementation manners of the embodiments of the present application, the first connecting hole 3333 and the second connecting hole 3334 can be oppositely arranged. Since the first protruding portion 345 corresponds to the position of the first connecting hole 3333 and the second protruding portion 346 corresponds to the position of the second connecting hole 3334, when the first connecting hole 3333 and the second connecting hole 3334 are oppositely arranged, the first protruding portion 345 and the second protruding portion 346 are also oppositely arranged, so that the first protruding portion 345 and the second protruding portion 346 are located on the same side of the first pivot shaft 301, and the distance between the first protruding portion 345 and the second protruding portion 346 and the first pivot shaft 301 is equal. When the abutting portion 335 cooperates with the elastic sheet 34, the synchronization of the deformation degrees of the one end of the elastic sheet 34 toward the first part 3331 and the one end of the elastic sheet 34 toward the second part 3332 is improved, so that the elastic sheet 34 is not prone to torsional deformation, thereby prolonging the service life of the elastic sheet 34 and reducing the possibility of damage to the elastic sheet 34.

[0295] It should be noted that when the first protruding portion 345 and the second protruding portion 346 are not directly opposite, since the fixed position of the first protruding portion 345 to the elastic sheet 34 and the fixed position of the second protruding portion 346 to the elastic sheet 34 are not directly opposite, the deformation degrees of the one end of the elastic sheet 34 toward the first part 3331 and the one end of the elastic sheet 34 toward the second part 3332 are not synchronized, resulting in that the elastic sheet 34 is prone to torsional deformation.

[0296] Reference Figure 6In some possible implementation manners of the embodiments of the present application, the third connecting rod 333 can include a connecting portion 3335. The connecting portion 3335 is connected between the first portion 3331 and the second portion 3332 to connect the first portion 3331 and the second portion 3332.

[0297] The connecting portion 3335 can be located on the side of the elastic sheet 34 away from the second connecting rod 332 to reduce the possibility of interference between the connecting portion 3335 and the second connecting rod 332.

[0298] One end of the connecting portion 3335 along the height direction Z of the refrigerator can be connected to the first portion 3331 near one end of the fourth connecting rod 334, and the other end can be connected to the second portion 3332 near one end of the fourth connecting rod 334. The position of the connecting portion 3335 needs to avoid the deformation path of the elastic sheet 34 to reduce the possibility of the connecting portion 3335 blocking the deformation path of the elastic sheet 34.

[0299] In ​ In the refrigerator shown in the figure, the elastic sheet can be provided on the second connecting rod 332, and the rod member elastically connected with the elastic sheet can be the third connecting rod 333.

[0300] The elastic sheet is in mutual abutting fit with the abutting portion in at least part of the angle range during the opening or closing of the door body 2, thereby generating elastic deformation to achieve damping effect on the movement of the hinge 3.

[0301] During the opening or closing of the door body 2, when the elastic sheet is in abutting fit with the abutting portion, the elastic sheet is extruded by the abutting portion to generate elastic deformation and exert a spring force on the abutting portion. The direction of the spring force is from the elastic sheet to the abutting portion. The spring force increases the pressure between the elastic sheet and the abutting portion, thereby increasing the frictional resistance between the elastic sheet and the abutting portion rotating with each other, and further achieving certain damping effect on the movement of the hinge.

[0302] When the door body 2 is opened to a certain door opening angle and the opening or closing external force applied on the door body 2 is removed, the damping effect from the elastic sheet can buffer at least part of the opening or closing force, thereby reducing the angle of the continued rotation of the door body 2 under the influence of inertia, self-weight or manufacturing deviation, etc.

[0303] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0304] For the sake of explanation, the foregoing descriptions have been presented in terms of specific embodiments. However, it is to be appreciated that specific embodiments described herein are not intended to limit the scope of the present application, which is defined with reference to the following claims. Various modifications and changes can be made thereto by those skilled in the art which fall within the scope of the present application as defined by the following claims. The embodiments were chosen and described in order to explain the principles of the application and the practical application and to enable others skilled in the art to understand for implementing various embodiments and with various modifications as are suited to the particular use contemplated.

Claims

1. A refrigerator characterized by comprising: The hinge comprises: A fixed seat connected to the cabinet; A hinge arm connected to the door body; A transmission assembly comprising four rods, two of which are pivotally connected to the fixed seat, the other two are pivotally connected to the hinge arm, and the four rods are pivotally connected to each other, and the four rods, the fixed seat and the hinge arm are arranged to form two independent quadrilaterals; A spring connected to one of the rods in the transmission assembly, which is in contact with another rod in the transmission assembly at least in part of the angle range during the rotation of the door body, thereby generating elastic deformation to dampen the movement of the hinge. The transmission assembly comprises a first link, a second link, a third link and a fourth link, the first end of the first link and the first end of the second link are pivotally connected to the fixed seat, the first end of the second link is farther away from the front wall of the cabinet than the first end of the first link, the first end of the third link and the first end of the fourth link are pivotally connected to the hinge arm, the first end of the third link is closer to the side wall of the cabinet near the fixed seat than the first end of the fourth link, the second end of the first link and the second end of the fourth link are pivotally connected, the second end of the third link and the first link are pivotally connected, the second end of the second link and the third link are pivotally connected, and the circumferential side wall of the second end of the second link is provided with a pressing part; 2. The refrigerator according to claim 1, characterized in that, Both ends of the spring are connected to both ends of the third link, and the spring is in contact with the pressing part at least in part of the angle range during the rotation of the door body, thereby generating elastic deformation to dampen the movement of the hinge. The second end of the second link and the third link are pivotally connected through a first pivot shaft; 3. The refrigerator according to claim 2, characterized in that, The pressing part comprises: A curved segment, the direction of the elastic force of the spring on the curved segment is directed to the first pivot shaft; and / or, A first edge, the first edge is away from the front wall of the cabinet, and the elastic force of the spring on the first edge has a force arm that makes the second end of the second link rotate around the first pivot shaft towards the front wall of the cabinet; and / or, The distance between the first edge and the axis of the first pivot shaft gradually increases from the end close to the door body to the end away from the door body, and the elastic force of the spring on the first edge has two perpendicular components, one of which is directed through the axis of the first pivot shaft, and the other is directed towards the cabinet; A second edge, the second edge is directed towards the front wall of the cabinet, and the elastic force of the spring on the second edge has a force arm that makes the second end of the second link rotate around the first pivot shaft away from the front wall of the cabinet; When the pressing part comprises a curved segment and a first edge, the first edge is farther away from the front wall of the cabinet than the curved segment; When the pressing part comprises a curved segment and a second edge, the second edge is closer to the front wall of the cabinet than the curved segment. ​ 4. The refrigerator according to claim 3, characterized in that, The distance between the first edge and the axis of the first pivot shaft gradually decreases from one end away from the first end of the second connecting rod to one end close to the first end of the second connecting rod.

5. The refrigerator according to claim 3, characterized in that, The distance between the second edge and the axis of the first pivot shaft gradually decreases from one end away from the first end of the second connecting rod to one end close to the first end of the second connecting rod.

6. The refrigerator according to any one of claims 2 to 5, characterized in that, The elastic sheet is recessed in a direction away from the second connecting rod.

7. The refrigerator according to any one of claims 2-5, characterized in that, The elastic sheet is configured with a matching protrusion protruding towards the second connecting rod, and the matching protrusion and the pressing part are in mutual pressing fit in at least a part of the angle range during the rotation of the door body, so as to generate elastic deformation and realize damping effect on the movement of the hinge.

8. The refrigerator according to any one of claims 2-5, characterized in that, The elastic sheet is configured with a matching protrusion protruding towards the second connecting rod, and the matching protrusion and the pressing part are in mutual pressing fit in at least a part of the angle range during the rotation of the door body, so as to generate elastic deformation and realize damping effect on the movement of the hinge.

9. The refrigerator according to any one of claims 2-5, characterized in that, The second connecting rod is configured with a limiting part on the side facing the first connecting rod; The elastic sheet is configured with an auxiliary protrusion protruding towards the second connecting rod, and the auxiliary protrusion and the limiting part are in abutting limiting when the door body is opened to the maximum opening angle.

10. The refrigerator according to any one of claims 2-5, characterized in that, The third connecting rod includes a first part and a second part arranged at intervals in the height direction of the refrigerator, and the second end of the second connecting rod extends between the first part and the second part. The elastic sheet is configured with a positioning part facing and connected to the first part and / or the second part.

11. The refrigerator according to any one of claims 2-5, characterized in that, The thickness of the elastic sheet is between 1.5mm-2.5mm, and the ratio of the thickness of the elastic sheet to the unfolded length of the elastic sheet is between 0.01-0.

03.

12. A refrigerator characterized by comprising: It comprises a box body, a door body and a hinge. The hinge comprises: A fixed seat connected to the box body; A hinge arm connected to the door body; A transmission assembly comprising a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the first end of the first connecting rod and the first end of the second connecting rod are pivotally connected to the fixed seat, the first end of the second connecting rod is farther away from the front wall of the box body than the first end of the first connecting rod, the first end of the third connecting rod and the first end of the fourth connecting rod are pivotally connected to the hinge arm, the first end of the third connecting rod is closer to the side wall of the box body close to the fixed seat than the first end of the fourth connecting rod, the second end of the first connecting rod and the second end of the fourth connecting rod are pivotally connected, the second end of the second connecting rod and the fourth connecting rod are pivotally connected, the second end of the third connecting rod and the second connecting rod are pivotally connected, and the circumferential side wall of the second end of the third connecting rod is configured with a pressing part; An elastic sheet connected to both ends of the second connecting rod, and the elastic sheet and the pressing part are in mutual pressing fit in at least a part of the angle range during the rotation of the door body, so as to generate elastic deformation and realize damping effect on the movement of the hinge.

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