Refrigerator

Abstract

The utility model provides a refrigerator, belongs to the technical field of household appliances, and aims to solve the technical problem that a door body of a related refrigerator is difficult to limit after the door body is opened. The hinge of the refrigerator comprises a fixing base, a hinge arm, a transmission assembly and an elastic piece, the fixing base is connected to a refrigerator body, the hinge arm is connected to a door body, the transmission assembly is connected between the fixing base and the hinge arm and comprises a second connecting rod and a third connecting rod, and the elastic piece is connected to the third connecting rod. When the door body is opened to a set door opening angle, the third connecting rod is stopped at one side, facing the first connecting rod, of the second connecting rod, so that the possibility that the included angle between the third connecting rod and the second connecting rod is continuously reduced is reduced, and the possibility that the maximum door opening angle of the door body is greater than the set door opening angle is reduced; and pulling between the door body and the hinge arm and pulling between the box body and the fixed seat caused by an overlarge door opening angle of the door body are reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of household appliances, and in particular to a refrigerator. Background Art

[0002] The refrigerator includes a box body, a door body and a hinge. The box body is formed with a receiving cavity for accommodating food or other items. The door body is movably arranged on the box body through the hinge so as to close or open the receiving cavity through the door body.

[0003] In the related art, the hinge is a six-link structure. When the refrigerator needs to be embedded in a cabinet, the hinge can control the door body to bypass the edge of the cabinet and move the door body outward during the opening process, so as to avoid interference between the door body and the cabinet during the opening process and avoid the door body blocking the accommodating cavity.

[0004] However, when the user opens the door with force, the door body will continue to open after it is opened to bypass the edge of the cabinet, causing the hinge and the door body to pull against each other, which may easily damage the hinge and the door body. Utility Model Content

[0005] The embodiment of the present application provides a refrigerator that can solve the technical problem that it is difficult to limit the door body of related refrigerators after the door body is opened.

[0006] In a first aspect, an embodiment of the present application provides a refrigerator, comprising a box body, a door body and a hinge, wherein the door body is rotatably connected to the box body through the hinge;

[0007] The hinge comprises:

[0008] A fixing seat connected to the box;

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

[0010] A transmission assembly, comprising a first link, a second link, a third link and a fourth link, wherein the first link and the second link are both pivotally connected to the fixing seat, the first link is closer to the box body than the second link, the third link and the fourth link are both pivotally connected to the hinge arm, the third link is closer to the side wall of the box body than the fourth link, the third link and the fourth link are also pivotally connected to the first link, the end of the second link facing away from the fixing seat is pivotally connected to the third link, a first limiting portion is configured on a side of the second link facing the first link, a pressing portion is configured on a circumferential side wall of an end of the second link facing away from the fixing seat, and the pressing portion is closer to the hinge arm than the first limiting portion;

[0011] A spring sheet, both ends of which are connected to the two ends of the third connecting rod. The spring sheet presses against the pressing portion within at least a partial angle range during the opening process of the door body, thereby generating elastic deformation to damp the movement of the hinge. A second limiting portion is configured on the side of the spring sheet facing the second connecting rod. The second limiting portion abuts against the first limiting portion to limit the position when the door body is opened to a set opening angle.

[0012] In the refrigerator of the embodiment of the present application, when the door body is opened to the set door opening angle, the second limiting portion abuts against the first limiting portion for limiting, and when the door body still has a tendency to open, the first limiting portion presses the second limiting portion toward the fourth connecting rod, and the second limiting portion applies an elastic force from the spring sheet to the first limiting portion to the first limiting portion after elastic deformation, and the elastic force can offset at least part of the pressure from the first limiting portion to the second limiting portion, that is, buffer at least part of the door opening force, thereby reducing the possibility of the angle between the second connecting rod and the third connecting rod continuing to decrease, thereby reducing the possibility of the door opening angle being greater than the set door opening angle, and further reducing the pulling between the door body and the hinge arm, and between the box body and the fixed seat caused by the excessively large door opening angle of the door body.

[0013] Within at least a partial angular range before the door body opens to the set door opening angle, the spring sheet and the pressing part press against each other, causing the spring sheet to deform along the pressing direction. The deformation causes the spring sheet to apply an elastic force to the pressing part, which increases the pressure between the spring sheet and the pressing part, thereby increasing the frictional resistance to rotation between the spring sheet and the pressing part, thereby achieving a certain damping effect on the movement of the hinge, so that the rotation speed of the door body relative to the box body can be reduced after the external force of opening the door is released.

[0014] In some embodiments of the present application, the second limiting portion includes a matching protrusion, and the matching protrusion protrudes in a direction away from the fourth connecting rod.

[0015] With such arrangement, when the door body is opened to the set door-opening angle and the door body still has a tendency to open, the second connecting rod presses the mating protrusion toward the fourth connecting rod and causes the mating protrusion to undergo elastic deformation. Since the mating protrusion is elastic, the mating protrusion exerts an elastic force directed from the mating protrusion to the second connecting rod after the elastic deformation. The elastic force can offset at least part of the pressure from the second connecting rod on the mating protrusion, that is, buffer at least part of the door-opening force, thereby reducing the possibility that the angle between the second connecting rod and the third connecting rod continues to decrease, thereby reducing the possibility that the door opening angle is greater than the set door opening angle, and further reducing the pulling between the door body and the hinge arm, and between the box body and the fixing seat caused by the excessively large door opening angle.

[0016] In some embodiments of the present application, the second limiting portion also includes an auxiliary protrusion, which protrudes in a direction away from the fourth connecting rod; the matching protrusion and the auxiliary protrusion are constructed to simultaneously abut and limit with the first limiting portion when the door body is opened to a set door opening angle.

[0017] With such arrangement, when the door body is opened to the set door opening angle, the matching protrusion and the auxiliary protrusion abut against the second connecting rod at the same time. When the door body still has a tendency to open, the second connecting rod presses the matching protrusion and the auxiliary protrusion toward the fourth connecting rod, and causes the matching protrusion to undergo elastic deformation. Since the matching protrusion and the auxiliary protrusion are elastic, the matching protrusion and the auxiliary protrusion exert an elastic force directed from the spring sheet to the second connecting rod on the second connecting rod after the elastic deformation. The elastic force can offset at least part of the pressure from the second connecting rod on the matching protrusion and the auxiliary protrusion, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle between the second connecting rod and the third connecting rod continues to decrease, thereby reducing the possibility that the door opening angle of the door body is greater than the set door opening angle, and further reducing the pulling between the door body and the hinge arm, and between the box body and the fixing seat caused by the excessively large door opening angle of the door body.

[0018] In some embodiments of the present application, the first limiting portion includes a limiting recess, which is recessed in a direction away from the first connecting rod, and the second limiting portion is configured to move into the limiting recess and abut against the limiting recess when the door body is opened to a set door opening angle; or, the first limiting portion is a limiting edge, and the limiting edge is configured to abut against the second limiting portion when the door body is opened to a set door opening angle.

[0019] With such arrangement, when the door body is opened to the set door opening angle, at least part of the matching convex part moves into the limiting recess and abuts against the limiting recess. When the door opening force of the door body remains unchanged, compared with the implementation mode of linear contact between the matching convex part and the second connecting rod, the abutment and matching of the matching convex part and the limiting recess can increase the contact area between the matching convex part and the limiting recess, thereby dispersing the pressure applied by the second connecting rod on the matching convex part, increasing the pressure required for the matching convex part to deform, that is, increasing the door opening force required for the matching convex part to deform, thereby reducing the possibility of the angle α between the second connecting rod and the third connecting rod continuing to decrease, and further reducing the possibility of the door opening angle of the door body being greater than the set door opening angle.

[0020] In some embodiments of the present application, the mating protrusion is located on a side of the auxiliary protrusion away from the first connecting rod; before the door body is opened to a set door opening angle, the mating protrusion and the pressing portion press and fit against each other.

[0021] With such arrangement, before the door body is opened to the set door opening angle, the pressing portion and the matching protrusion press against each other, and the pressing portion presses against the matching protrusion, causing the matching protrusion to deform along the pressing direction. The deformation causes the matching protrusion to apply an elastic force to the pressing portion, and the elastic force increases the pressure between the matching protrusion and the pressing portion, thereby increasing the friction force between the matching protrusion and the pressing portion, thereby increasing the friction resistance when the second connecting rod and the third connecting rod rotate relative to each other, thereby achieving a certain damping effect on the movement of the hinge, so that the rotation speed of the door body relative to the box body can be reduced after the external force of opening the door is released.

[0022] In some embodiments of the present application, the second connecting rod rotates around the first pivot axis relative to the third connecting rod, and the pressing portion includes an arc segment, and the axis corresponding to the arc segment is colinear with the axis of the first pivot axis; the spring sheet and the arc segment press against each other, and the direction of the elastic force of the spring sheet on the arc segment passes through the axis of the first pivot axis.

[0023] With such arrangement, before the door body is opened to the set door opening angle, the spring sheet and the arc segment press against each other, and the arc segment presses the spring sheet, causing the spring sheet to deform along the pressing direction and exerting an elastic force on the arc segment. The direction of the elastic force is from the spring sheet to the arc segment and passes through the axis of the first pivot shaft. The elastic force increases the pressure between the spring sheet and the arc segment, thereby increasing the friction between the spring sheet and the arc segment, and further makes it difficult for the arc segment and the spring sheet, as well as the second connecting rod and the third connecting rod to continue to rotate relative to each other under the influence of the door body inertia, dead weight or manufacturing deviation, etc. This allows the door body to easily hover after the external force of opening the door is released, so as to facilitate users to take and put items in the accommodating cavity.

[0024] In some embodiments of the present application, the spring sheet is further configured with a mating segment, the mating segment has a pressing surface on a side facing the second connecting rod, the pressing surface is a curved surface, and the pressing surface and the arc segment are pressed and mated with each other.

[0025] With such arrangement, when the lengths of both ends of the pressing surface in the extension direction remain unchanged, compared with the implementation method in which the pressing surface is a plane, when the pressing surface is a curved surface, the extension length of the pressing surface increases, thereby increasing the deformation of the spring piece and the elastic force on the arc segment.

[0026] In some embodiments of the present application, the pressing surface is an arc surface, the axis corresponding to the pressing surface is located on the side of the spring sheet facing the arc segment, and the pressing surface and the arc segment are at least partially in contact with each other.

[0027] With such arrangement, the arc segment and the pressure surface fit each other, thereby increasing the contact area between the pressure surface and the arc segment, thereby increasing the friction between the pressure surface and the arc segment, making it easier for the door body to hover after opening.

[0028] In some embodiments of the present application, the pressing portion also includes a flange section, which is adjacent to one end of the arc section close to the door body, and the distance between the flange section and the axis of the first pivot shaft gradually increases from one end away from the arc section to one end close to the arc section; the elastic force of the spring sheet on the flange section has two mutually perpendicular components, one of which is directed through the axis of the first pivot shaft, and the other is directed toward the box body.

[0029] With such a configuration, when the spring sheet and the flange section are pressed together, the elastic force of the spring sheet on the flange section has two mutually perpendicular force components, one of which is directed through the axis of the first pivot shaft, and the other is directed toward the box body. The force component directed toward the axis of the first pivot shaft causes the spring sheet and the flange section to be pressed tightly, that is, the pressure between the spring sheet and the flange section is increased, thereby increasing the friction between the spring sheet and the flange section. The force component directed toward the box body can push the flange section toward the box body, causing the end of the second connecting rod that is away from the fixed seat to move toward the fixed seat, driving the door body to move toward the box body, forming a force for closing the door, and increasing the possibility of the door body closing automatically.

[0030] In some embodiments of the present application, the thickness of the spring sheet is between 1.5 mm and 2.5 mm, and the ratio of the thickness of the spring sheet to the unfolded length of the spring sheet is between 0.01 and 0.03.

[0031] In this way, the thickness of the spring sheet is between 1.5 mm and 2.5 mm, which can prevent the spring sheet from fatigue fracture and reduce the external force required when opening and closing the door. The ratio of the thickness of the spring sheet to the unfolded length of the spring sheet is between 0.01 and 0.03, so that the spring sheet can be bent and formed, making it easy to produce.

[0032] In a second aspect, an embodiment of the present application provides a refrigerator, comprising a cabinet, a door and a hinge;

[0033] The hinge comprises:

[0034] A fixing seat connected to the box;

[0035] A hinge arm connected to the door body;

[0036] A transmission assembly, comprising a first link, a second link, a third link and a fourth link, wherein the first link and the second link are both pivotally connected to the fixing seat, the first link is closer to the box body than the second link, the third link and the fourth link are both pivotally connected to the hinge arm, the third link is closer to the side wall of the box body than the fourth link, the third link and the fourth link are also pivotally connected to the first link, and the end of the second link facing away from the fixing seat is pivotally connected to the third link;

[0037] A spring sheet, both ends of which are connected to the two ends of the third connecting rod. The spring sheet presses against the pressing portion within at least a partial angle range during the opening process of the door body, thereby generating elastic deformation to damp the movement of the hinge. When the door body is opened to a set opening angle, it stops on the side of the second connecting rod facing the first connecting rod.

[0038] In the refrigerator of the embodiment of the present application, when the door body is opened to the set door-opening angle, the spring sheet stops at the side of the second connecting rod toward the first connecting rod, and when the door body still has a tendency to open, the second connecting rod squeezes the spring sheet toward the fourth connecting rod, and the spring sheet applies an elastic force from the spring sheet to the second connecting rod on the second connecting rod after elastic deformation, and the elastic force can offset at least part of the pressure from the second connecting rod on the spring sheet, that is, buffer at least part of the door-opening force, thereby reducing the possibility of the angle between the second connecting rod and the third connecting rod continuing to decrease, thereby reducing the possibility of the door opening angle being greater than the set door opening angle, and further reducing the pulling between the door body and the hinge arm, and between the cabinet and the fixing seat caused by the excessively large door opening angle.

[0039] Within at least a partial angular range before the door body opens to the set door opening angle, the circumferential side walls of the spring sheet and the second connecting rod at one end facing away from the fixed seat press against each other, causing the spring sheet to deform along the pressing direction. The deformation causes the spring sheet to exert an elastic force on the second connecting rod, and the elastic force increases the pressure between the spring sheet and the second connecting rod, thereby increasing the frictional resistance to rotation between the spring sheet and the second connecting rod, thereby achieving a certain damping effect on the movement of the hinge, so that the rotation speed of the door body relative to the box body can be reduced after the external force of opening the door is released. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0041] Figure 1 This is a schematic diagram of the structure of the refrigerator according to an embodiment of the present application from a first viewing angle when the door is at the maximum opening angle;

[0042] Figure 2 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application from a first perspective when the door is in a closed state;

[0043] Figure 3 This is a schematic structural diagram of the refrigerator according to an embodiment of the present application from a second viewing angle when the door is in a closed state;

[0044] Figure 4This is a schematic diagram of the structure of the refrigerator according to the embodiment of the present application from a second viewing angle when the door is at the maximum opening angle;

[0045] Figure 5 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door is in a closed state;

[0046] Figure 6 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door opening angle is 30°;

[0047] Figure 7 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door opening angle is 60°;

[0048] Figure 8 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door opening angle is 90°;

[0049] Fig. 9 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door is opened to the maximum door opening angle;

[0050] Fig.10 This is a schematic diagram of the structure of a second connecting rod in a refrigerator according to an embodiment of the present application;

[0051] Fig.11 This is a schematic diagram of the structure of a spring in a refrigerator according to an embodiment of the present application;

[0052] Fig.12 This is a schematic structural diagram of a refrigerator according to another embodiment of the present application, with the door in a closed state;

[0053] Fig.13 This is a schematic structural diagram of a refrigerator according to another embodiment of the present application when the door opening angle is 30°;

[0054] Fig.14 This is a schematic structural diagram of a refrigerator according to another embodiment of the present application when the door opening angle is 60°;

[0055] Fig.15 This is a schematic structural diagram of a refrigerator according to another embodiment of the present application when the door opening angle is 90°;

[0056] Fig.16 This is a schematic structural diagram of a refrigerator according to another embodiment of the present application when the door is opened to the maximum door opening angle;

[0057] Fig.17 This is a schematic structural diagram of a second connecting rod in a refrigerator according to another embodiment of the present application;

[0058] Fig.18 This is a schematic structural diagram of a spring piece in a refrigerator according to another embodiment of the present application.

[0059] Description of reference numerals:

[0060] 1-Box;

[0061] 2- portal;

[0062] 3- Hinge;

[0063] 31-fixed seat;

[0064] 32- hinged arm;

[0065] 33- transmission assembly;

[0066] 331-first connecting rod; 332-second connecting rod;

[0067] 339-limiting edge; 335-limiting recess;

[0068] 336-pressing portion; 337-arc segment;

[0069] 338- flange section;

[0070] 333-third connecting rod; 334-fourth connecting rod;

[0071] 301-first pivot axis; 302-second pivot axis;

[0072] 303 - third pivot axis; 304 - fourth pivot axis;

[0073] 305 - fifth pivot axis; 306 - sixth pivot axis;

[0074] 307-seventh pivot axis;

[0075] 34-shrapnel;

[0076] 341-first end; 342-second end;

[0077] 344-matching convex part; 345-auxiliary convex part;

[0078] 346-matching section; 347-pressing surface;

[0079] 4-Cabinet;

[0080] 41-end face; 42-edge. DETAILED DESCRIPTION

[0081] As described in the background technology, related refrigerators have the problem of being difficult to limit the door body after the door body is opened. The inventors have found through research that the reason for this problem is that the hinges of the refrigerators in the related technology lack a structure that can limit the door body after the door body is opened, resulting in that when the user opens the door forcefully, the door body will be pulled between the hinge and the door body due to the excessive opening angle, causing damage to the hinge and the door body.

[0082] In view of this, the refrigerator in the embodiment of the present application is provided with a spring sheet on the third connecting rod. When the door body is opened to the set door opening angle, the spring sheet stops on the side of the second connecting rod toward the first connecting rod. When the door body still has a tendency to open, the second connecting rod squeezes the spring sheet toward the fourth connecting rod. After elastic deformation, the spring sheet applies an elastic force from the spring sheet to the second connecting rod on the second connecting rod. The elastic force can offset at least part of the pressure from the second connecting rod on the spring sheet, that is, buffer at least part of the door opening force, thereby reducing the possibility of the angle between the second connecting rod and the third connecting rod continuing to decrease, thereby reducing the possibility of the door opening angle being greater than the set door opening angle, and further reducing the pulling between the door body and the hinge arm, and between the box body and the fixed seat caused by the excessively large door opening angle of the door body.

[0083] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0084] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0085] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0086] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0087] The terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0088] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0090] refer to Figure 1 The refrigerator of the embodiment of the present application includes a cabinet 1, a door body 2 and a hinge 3. The cabinet 1 is formed with a receiving cavity for receiving food or other items. The opening of the receiving cavity faces the door side of the cabinet 1. The door body 2 is arranged on the door side of the cabinet 1. The door body 2 is rotatably connected to the cabinet 1 through the hinge 3 so as to close or open the receiving cavity through the door body 2.

[0091] refer to Figure 2 and Figure 3 The refrigerator of the embodiment of the present application can be embedded in the cabinet 4 during installation. After installation, the outer side of the door body 2 can be flush with the end surface 41 of the cabinet 4, and an edge 42 is formed between the side of the cabinet 4 facing the box body 1 and the end surface 41 of the cabinet 4.

[0092] refer to Figure 4 The hinge 3 includes a fixing seat 31, a hinge arm 32 and a transmission assembly 33. The fixing seat 31 is connected to the box body 1. The hinge arm 32 is connected to the door body 2. The transmission assembly 33 is connected between the fixing seat 31 and the hinge arm 32.

[0093] refer to Figure 5 The transmission assembly 33 may include a first connecting rod 331 , a second connecting rod 332 , a third connecting rod 333 and a fourth connecting rod 334 .

[0094] The first connecting rod 331 has a first end, and the first end of the first connecting rod 331 is pivotally connected to the fixing base 31 .

[0095] The second connecting rod 332 has a first end, and the first end of the second connecting rod 332 is farther away from the front wall of the box body 1 than the first end of the first connecting rod 331. The front wall of the box body 1 refers to the side of the box body 1 facing the door body 2. The first end of the second connecting rod 332 is pivotally connected to the fixing seat 31.

[0096] The third link 333 has a first end, and the first end of the third link 333 is pivotally connected to the hinge arm 32 .

[0097] The fourth connecting rod 334 has a first end, and the first end of the fourth connecting rod 334 is farther away from the side wall of the box body 1 close to the fixing seat 31 than the first end of the third connecting rod 333. The side wall of the box body 1 refers to both sides of the box body 1 along the width direction X. The first end of the fourth connecting rod 334 is pivotally connected to the hinge arm 32.

[0098] The first connecting rod 331 has a second end. The second end of the first connecting rod 331 and the first end of the first connecting rod 331 are respectively located at two ends of an extending direction of the first connecting rod 331 .

[0099] The fourth link 334 has a second end, and the second end of the fourth link 334 and the first end of the fourth link 334 are respectively located at two ends of 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.

[0100] The third link 333 has a second end, and the second end of the third link 333 and the first end of the third link 333 are respectively located at two ends of 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.

[0101] The second connecting rod 332 has a second end, and the second end of the second connecting rod 332 and the first end of the second connecting rod 332 are respectively located at two ends of the extension direction of the second connecting rod 332. The second end of the second connecting rod 332 is pivotally connected to the third connecting rod 333, and the projection of the second end of the second connecting rod 332 on the third connecting rod 333 is located between the first end of the third connecting rod 333 and the second end of the third connecting rod 333.

[0102] The first link 331 and the second link 332 are both pivotally connected to the fixing 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 close to the fixing seat 31 than the fourth link 334.

[0103] 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 facing away from the fixing seat 31 is pivotally connected to the third link 333. The fixing seat 31, the first link 331, the second link 332 and the third link 333 form a quadrilateral.

[0104] The third link 333 can rotate relative to the first link 331 around the second pivot axis 302. The hinge arm 32 can rotate relative to the third link 333 around the third pivot axis 303. The third link 333 can rotate relative to the second link 332 around the first pivot axis 301. The second link 332 can rotate relative to the fixing seat 31 around the fourth pivot axis 304. The first link 331 can rotate relative to the fixing seat 31 around the fifth pivot axis 305. The fourth link 334 can rotate relative to the first link 331 around the sixth pivot axis 306. The hinge arm 32 can rotate relative to the fourth link 334 around the seventh pivot axis 307.

[0105] That is, the third link 333 can rotate relative to the first link 331 around the axis of the second pivot shaft 302. The hinge arm 32 can rotate relative to the third link 333 around the axis of the third pivot shaft 303. The third link 333 can rotate relative to the second link 332 around the axis of the first pivot shaft 301. The second link 332 can rotate relative to the fixing seat 31 around the axis of the fourth pivot shaft 304. The first link 331 can rotate relative to the fixing seat 31 around the axis of the fifth pivot shaft 305. The fourth link 334 can rotate relative to the first link 331 around the axis of the sixth pivot shaft 306. The hinge arm 32 can rotate relative to the fourth link 334 around the axis of the seventh pivot shaft 307.

[0106] The first link 331 , the third link 333 , the fourth link 334 and the hinge arm 32 form a quadrilateral, that is, the axis of the second pivot shaft 302 , the axis of the third pivot shaft 303 , the axis of the sixth pivot shaft 306 and the axis of the seventh pivot shaft 307 form a quadrilateral.

[0107] The fixing 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 shaft 302 , the axis of the first pivot shaft 301 , the axis of the fourth pivot shaft 304 and the axis of the fifth pivot shaft 305 form a quadrilateral.

[0108] In some possible embodiments, reference Figure 5-Figure 9When the door body 2 is opened, the hinge 3 changes its position under the restraint of the above two quadrilaterals, so that the hinge arm 32 moves outward along the depth direction Y of the refrigerator and outward along the width direction X of the refrigerator, thereby driving the door body 2 to move outward along the depth direction Y of the refrigerator and outward along the width direction X of the refrigerator.

[0109] It should be noted that, outward along the depth direction Y of the refrigerator refers to the direction from the box body 1 to the cabinet 4 along the depth direction Y of the refrigerator. Figure 5 The positive direction of the direction Y shown in FIG. Outward along the width direction X of the refrigerator refers to the direction from the box body 1 to the fixing seat 31 along the width direction X of the refrigerator, for example Figure 5 The positive direction of the direction X shown in .

[0110] This can not only increase the maximum opening angle of the door body 2, for example, make the maximum opening angle of the door body 2 greater than 90°, thereby reducing the possibility of the door body 2 blocking the accommodating cavity; it can also enable the second connecting rod 332 and the third connecting rod 333 to form an avoidance area. After the opening angle of the door body 2 is greater than 90°, the avoidance area can avoid the edge 42 of the cabinet 4, thereby reducing the possibility of the door body 2 interfering with the cabinet 4 during the opening process.

[0111] In the quadrilateral surrounded by the fixed seat 31, the first link 331, the second link 332 and the third link 333, as the opening angle of the door body 2 gradually increases, the angle α between the second link 332 and the third link 333 gradually decreases, wherein the angle α between the second link 332 and the third link 333 is the angle formed by connecting 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.

[0112] In some possible embodiments, reference Figure 5-Figure 18 The hinge 3 may include a spring sheet 34. The spring sheet 34 is elastic and will be elastically deformed and have elastic force under the action of external force.

[0113] In some possible embodiments, the spring 34 may be a leaf spring, which has a simple structure, reliable operation, low cost and easy maintenance.

[0114] The spring piece 34 is disposed on the third connecting rod 333 . One side of the spring piece 34 faces the second connecting rod 332 , and the other side faces the fourth connecting rod 334 .

[0115] In some possible embodiments, reference Fig.11 and Fig.18 The spring piece 34 may have a first end 341. The first end 341 of the spring piece 34 is located at one end of the extension direction of the spring piece 34.

[0116] In some possible embodiments, reference Figure 5 and Fig.12 The first end 341 of the spring sheet 34 can be arranged around the second pivot shaft 302 to reduce the difficulty of assembling the first end 341 of the spring sheet 34 and the second pivot shaft 302 .

[0117] In some possible embodiments, reference Fig.11 and Fig.18 The spring piece 34 may have a second end 342. The second end 342 of the spring piece 34 and the first end 341 of the spring piece 34 are respectively located at two ends of the extension direction of the spring piece 34.

[0118] In some possible embodiments, reference Figure 5 and Fig.12 The second end 342 of the spring piece 34 can be arranged around the third pivot shaft 303 to reduce the difficulty of assembling the second end 342 of the spring piece 34 and the third pivot shaft 303 .

[0119] In some possible embodiments, the elastic sheet 34 may be configured with a second limiting portion.

[0120] In some possible embodiments, reference Figure 5-Figure 11 , the second limiting portion may be a matching protrusion 344. The matching protrusion 344 protrudes in a direction away from the fourth connecting rod 334, that is, the side of the matching protrusion 344 away from the fourth connecting rod 334 protrudes in a direction away from the fourth connecting rod 334, and the side of the matching protrusion 344 facing the fourth connecting rod 334 may form a recess away from the fourth connecting rod 334. The matching protrusion 344 may be formed by bending a part of the spring sheet 34 toward the second connecting rod 332, so that the matching protrusion 344 is constructed on the spring sheet 34.

[0121] The mating protrusion 344 is configured to abut against the second link 332 when the door body 2 is opened to a set door opening angle.

[0122] It should be noted that the set door opening angle in the embodiment of the present application can be greater than 90°. When the door opening angle of the door body 2 is set, the possibility of the door body 2 blocking the accommodating cavity is reduced. The set door opening angle in the embodiment of the present application can be greater than 90° and less than 180° to reduce the possibility of the door body 2 colliding with the cabinet 4. When the door opening angle of the door body 2 does not exceed the set door opening angle, the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 can be reduced.

[0123] When the door body 2 is opened to the set door opening angle, the mating protrusion 344 and the second connecting rod 332 abut against each other. When the door body 2 still has a tendency to open, the second connecting rod 332 presses the mating protrusion 344 toward the fourth connecting rod 334 and elastically deforms the mating protrusion 344. Since the mating protrusion 344 is elastic, the mating protrusion 344 applies an elastic force from the mating protrusion 344 to the second connecting rod 332 after elastic deformation. The elastic force can offset at least part of the pressure from the second connecting rod 332 on the mating protrusion 344, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle α between the second connecting rod 332 and the third connecting rod 333 continues to decrease, thereby reducing the possibility that the door opening angle of the door body 2 is greater than the set door opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessively large door opening angle of the door body 2.

[0124] 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.

[0125] 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, so that the service life of the spring piece 34 can be extended.

[0126] 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 second connecting rod 332 are pressed together, making the hinge 3 inconvenient to use.

[0127] In some possible implementations of the embodiments 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.

[0128] In some possible implementations of the embodiments of the present application, if the ratio of the thickness of the spring piece 34 to the unfolded length of the spring piece 34 is less than or equal to 0.03, the spring piece 34 is easy to produce.

[0129] In some possible implementations of the embodiments of the present application, when the ratio of the thickness of the spring 34 / the unfolded length of the spring 34 is greater than or equal to 0.01 and less than or equal to 0.03, for example, when the thickness of the spring 34 is 2 mm, the unfolded length of the spring 34 is 50 mm, 100 mm or 150 mm. This not only facilitates the production of the spring 34, but also helps to extend the service life of the spring 34.

[0130] The material of the spring piece 34 contains manganese. If the ratio of the thickness of the spring piece 34 to the unfolded length of the spring piece 34 is too large or too small, it will be affected by its own elasticity, making it difficult to bend and form, and the dimensional deviation after forming will be large.

[0131] In some possible embodiments, a first limiting portion may be configured on a side of the second connecting rod 332 facing the first connecting rod 331 , and the matching protrusion 344 is configured to abut against the first limiting portion.

[0132] In some possible embodiments, the first limiting portion may be a limiting curved surface configured on a side of the second connecting rod 332 facing the first connecting rod 331 .

[0133] In some possible embodiments, reference Figure 5-Figure 11 The first limiting portion may be a limiting recess 335. The limiting recess 335 is configured on a side of the second connecting rod 332 facing the first connecting rod 331. The limiting recess 335 may be recessed in a direction away from the first connecting rod 331.

[0134] Before the door body 2 is opened to the set door opening angle, the matching convex portion 344 and the limiting concave portion 335 are spaced apart and do not contact each other. As the door body 2 opens to the set door opening angle, the space between the matching convex portion 344 and the limiting concave portion 335 gradually decreases. When the door body 2 opens to the set door opening angle, at least part of the matching convex portion 344 moves into the limiting concave portion 335 and contacts the limiting concave portion 335.

[0135] When the door opening force of the door body 2 remains unchanged, compared with the implementation method of linear contact between the mating protrusion 344 and the second connecting rod 332, the abutment fit between the mating protrusion 344 and the limiting recess 335 can increase the contact area between the mating protrusion 344 and the limiting recess 335, thereby dispersing the pressure applied by the second connecting rod 332 on the mating protrusion 344, increasing the pressure required for the mating protrusion 344 to deform, that is, increasing the door opening force required for the mating protrusion 344 to deform, thereby reducing the possibility of the angle α between the second connecting rod 332 and the third connecting rod 333 continuing to decrease, and further reducing the possibility of the door opening angle of the door body 2 being greater than the set door opening angle.

[0136] In some possible embodiments, the first limiting portion may be a limiting protrusion (not shown in the drawings) configured on a side of the second connecting rod 332 facing the first connecting rod 331 . The limiting protrusion may protrude toward the first connecting rod 331 .

[0137] When the door body 2 is opened to the set door opening angle, the mating protrusion 344 and the limiting protrusion abut against each other. When the door body 2 still has a tendency to open, the limiting protrusion squeezes the mating protrusion 344 and causes the mating protrusion 344 to undergo elastic deformation. Since the mating protrusion 344 is elastic, the mating protrusion 344 applies an elastic force from the mating protrusion 344 to the second connecting rod 332 on the limiting protrusion after the elastic deformation. The elastic force can offset at least part of the pressure from the limiting protrusion on the mating protrusion 344, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle α between the second connecting rod 332 and the third connecting rod 333 continues to decrease, thereby reducing the possibility that the door opening angle of the door body 2 is greater than the set door opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessively large door opening angle of the door body 2.

[0138] In some possible embodiments, the first limiting portion may be a limiting groove portion (not shown in the drawings) formed by a circumferential side wall of the second end of the second connecting rod 332 and an adjacent position between a side of the second connecting rod 332 facing the first connecting rod 331 .

[0139] When the door body 2 is opened to the set door opening angle, the mating protrusion 344 and the limiting groove portion abut against each other. When the door body 2 still has a tendency to open, the limiting groove portion squeezes the mating protrusion 344 and causes the mating protrusion 344 to undergo elastic deformation. Since the mating protrusion 344 is elastic, the mating protrusion 344 will exert an elastic force on the limiting groove portion from the mating protrusion 344 to the second connecting rod 332 after the elastic deformation. The elastic force can offset at least part of the pressure from the limiting groove portion on the mating protrusion 344, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle α between the second connecting rod 332 and the third connecting rod 333 will continue to decrease, thereby reducing the possibility that the door opening angle of the door body 2 will be greater than the set door opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessively large door opening angle of the door body 2.

[0140] In some possible embodiments, the first limiting portion may be a limiting edge (not shown in the drawings) configured on the side of the second connecting rod 332 facing the first connecting rod 331. The limiting edge may be a plane, or have a certain undulation relative to the plane, as long as the limiting edge can abut against the matching protrusion 344 when the door opening angle of the door body 2 is the set door opening angle.

[0141] When the door body 2 is opened to the set door opening angle, the mating protrusion 344 abuts against the limiting edge. When the door body 2 still has a tendency to open, the limiting edge squeezes the mating protrusion 344 and causes the mating protrusion 344 to undergo elastic deformation. Since the mating protrusion 344 is elastic, the mating protrusion 344 exerts an elastic force from the mating protrusion 344 to the second connecting rod 332 on the limiting edge after elastic deformation. The elastic force can offset at least part of the pressure from the limiting edge on the mating protrusion 344, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle α between the second connecting rod 332 and the third connecting rod 333 continues to decrease, thereby reducing the possibility that the door opening angle of the door body 2 is greater than the set door opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessively large door opening angle of the door body 2.

[0142] In some possible embodiments, there may be multiple matching protrusions 344. Multiple matching protrusions 344 may be arranged in sequence along the extension direction of the spring sheet 34. There may be one first limiting portion, and multiple matching protrusions 344 may be matched with one first limiting portion at the same time. There may be multiple first limiting portions, and the number of first limiting portions may correspond to the number of matching protrusions 344, and multiple matching protrusions 344 respectively match with corresponding first limiting portions.

[0143] Multiple mating protrusions 344 can disperse the pressure applied by the second connecting rod 332 on each mating protrusion 344, thereby increasing the pressure required for the mating protrusion 344 to deform, that is, increasing the door-opening force required to deform the mating protrusion 344, thereby reducing the possibility of the angle α between the second connecting rod 332 and the third connecting rod 333 continuing to decrease, and further reducing the possibility of the door opening angle of the door body 2 being greater than the set door opening angle.

[0144] In some embodiments, the circumferential side wall of the second connecting rod 332 at one end away from the fixing seat 31 may be configured with an arc segment 337, that is, the circumferential side wall of the second end of the second connecting rod 332 may be configured with an arc segment 337. The arc segment 337 is closer to the hinge arm 32 than the first limiting portion. The axis corresponding to the arc segment 337 is colinear with the axis of the first pivot shaft 301.

[0145] It should be noted that the arc segment 337 may be in an arc shape, and the arc segment 337 may also have a certain deviation relative to the arc shape, as long as the arc segment 337 as a whole conforms to the law of rotation around the axis of the first pivot shaft 301 .

[0146] refer to Figure 5-Figure 8, within at least a partial angle range before the door body 2 is opened to the set door opening angle, the spring piece 34 and the arc segment 337 press against each other, and the arc segment 337 presses the spring piece 34, causing the spring piece 34 to deform along the pressing direction and applying an elastic force F to the arc segment 337. The direction of the elastic force F is from the spring piece 34 to the arc segment 337, and passes through the axis of the first pivot shaft 301. The elastic force F increases the pressure between the spring piece 34 and the arc segment 337, thereby increasing the frictional resistance to rotation between the spring piece 34 and the arc segment 337, thereby achieving a certain damping effect on the movement of the hinge 3. After the external force for opening the door body 2 is released, the rotation speed of the door body 2 relative to the box body 1 can be reduced, so that the door body 2 can be easily hovered, so as to facilitate users to take and put items from the accommodating cavity.

[0147] In addition, the elastic force exerted by the spring piece 34 on the arc segment 337 can offset at least part of the pressure of the arc segment 337 on the spring piece 34, thereby buffering at least part of the door opening force or door closing force and reducing the impact force when the door body 2 is opened and closed.

[0148] In some possible embodiments, the spring sheet 34 may be configured with a matching section 346. The matching section 346 may be located on the side of the matching protrusion 344 away from the first end 341 of the spring sheet 34. As the door opening angle of the door body 2 gradually increases, the second connecting rod 332 successively matches with the matching section 346 and the matching protrusion 344. When the door opening angle of the door body 2 is less than the set door opening angle, the matching section 346 and the arc section 337 are pressed against each other. When the door opening angle of the door body 2 is the set door opening angle, the matching protrusion 344 abuts against the first limit portion on the second connecting rod 332.

[0149] The arc segment 337 applies pressure to the matching segment 346 toward the fourth connecting rod 334, so that the spring piece 34 is elastically deformed toward the fourth connecting rod 334 and an elastic force F is applied to the arc segment 337. The direction of the elastic force F is from the matching segment 346 to the arc segment 337 and passes through the axis of the first pivot shaft 301. Therefore, the elastic force F increases the pressure between the spring piece 34 and the arc segment 337, thereby increasing the frictional resistance to rotation between the spring piece 34 and the arc segment 337. After the external force of opening the door body 2 is released, the arc segment 337 and the spring piece 34, as well as the second connecting rod 332 and the third connecting rod 333 are not likely to continue to rotate relative to each other under the influence of the inertia, dead weight or manufacturing deviation of the door body 2. In this way, the door body 2 can be easily suspended after the external force of opening the door is released, so as to facilitate the user to take and put items from the accommodating cavity.

[0150] Under the condition that the length between the first end 341 and the second end 342 of the spring piece 34 remains unchanged, constructing the matching section 346 and the matching protrusion 344 on the spring piece 34 can increase the extension length of the spring piece 34, so that when the matching section 346 and the arc section 337 are pressed and matched, the deformation of the spring piece 34 is increased, thereby increasing the elastic force F applied by the spring piece 34 to the arc section 337, and improving the stability of the door body 2 when it is hovering.

[0151] In some possible embodiments, the mating section 346 can be adjacent to the end of the mating protrusion 344 facing away from the first connecting rod 331, so that the structure of the mating section 346 and the mating protrusion 344 is more compact, so that when the opening angle of the door body 2 is the set opening angle, the second connecting rod 332 can quickly engage with the mating protrusion 344.

[0152] In some possible embodiments, the side of the matching section 346 facing the second connecting rod 332 may have a pressing surface 347. The pressing surface 347 is used to press and cooperate with the arc section 337, and the pressing surface 347 is configured to apply an elastic force F to the arc section 337, and the direction of the elastic force F passes through the axis of the first pivot shaft 301.

[0153] In at least a partial angle range before the door body 2 is opened to the set door opening angle, the pressing surface 347 and the arc segment 337 press against each other, and the arc segment 337 applies pressure to the pressing surface 347 toward the fourth connecting rod 334, so that the spring piece 34 is elastically deformed toward the fourth connecting rod 334 and an elastic force F is applied to the arc segment 337. The direction of the elastic force F is from the pressing surface 347 to the arc segment 337 and passes through the axis of the first pivot shaft 301. Therefore, the elastic force F causes the pressure between the spring piece 34 and the arc segment 337 to The force increases, thereby increasing the frictional resistance to rotation between the spring piece 34 and the arc segment 337, thereby achieving a certain damping effect on the movement of the hinge 3. After the external force of opening the door body 2 is released, the arc segment 337 and the spring piece 34, as well as the second connecting rod 332 and the third connecting rod 333 are not easy to continue to rotate relative to each other under the influence of the inertia, dead weight or manufacturing deviation of the door body 2. In this way, the door body 2 can be easily suspended after the external force of opening the door is released, so as to facilitate the user to take and put items from the storage cavity.

[0154] In some possible implementations of the embodiment of the present application, the pressing surface 347 may be a plane, so as to simplify the structure of the spring piece 34 and facilitate the processing and manufacturing of the spring piece 34 .

[0155] In some possible implementations of the embodiment of the present application, the pressing surface 347 may be a curved surface. The pressing surface 347 may be convex toward the arc segment 337 . The pressing surface may also be concave in a direction away from the arc segment 337 .

[0156] When the lengths of both ends of the pressing surface 347 in the extension direction remain unchanged, compared with the implementation method in which the pressing surface 347 is a plane, when the pressing surface 347 is a curved surface, the extension length of the pressing surface 347 increases, thereby increasing the deformation of the spring piece 34 and the elastic force F on the arc segment 337.

[0157] In the implementation method in which the pressing surface is recessed in the direction away from the arc segment 337, the pressing surface 347 can be an arc surface, and the radius corresponding to the pressing surface 347 can be equal to the radius corresponding to the arc segment 337, so that when the arc segment 337 and the pressing surface 347 are pressed together, the arc segment 337 and the pressing surface 347 fit each other, thereby increasing the contact area between the pressing surface 347 and the arc segment 337, thereby increasing the friction force between the pressing surface 347 and the arc segment 337, making it easier for the door body 2 to remain hovering after opening.

[0158] It should be noted that the pressing surface 347 is an arc surface, and the pressing surface 347 may be an arc shape, or the pressing surface 347 may have a certain deviation relative to the arc shape, as long as there is surface contact between the pressing surface 347 and the arc segment 337 .

[0159] In some possible implementations of the present application, reference is made to Figure 5-Figure 9 In the process of the door body 2 opening from the closed state to the maximum opening angle, the arc segment 337 can always press and cooperate with the first matching segment 346, thereby increasing the possibility of the door body 2 hovering at any opening angle.

[0160] In some other possible implementations of the embodiments of the present application, when the opening angle of the door body 2 is between a first angle and a second angle, wherein the first angle is greater than 0°, and the second angle is greater than the first angle and less than the maximum opening angle, the arc segment 337 and the first mating segment 346 press against each other to allow the door body 2 to easily hover when the opening angle is between the first angle and the second angle.

[0161] In some other possible implementations of the embodiments of the present application, when the opening angle of the door body 2 is between the first angle and the maximum opening angle, wherein the first angle is greater than 0° and less than the maximum opening angle, the arc segment 337 and the first mating segment 346 press against each other to allow the door body 2 to easily hover when the opening angle is between the first angle and the maximum opening angle.

[0162] In some other possible implementations of the embodiments of the present application, when the door body 2 is opened from a closed state to a first angle, wherein the first angle is greater than 0° and less than the maximum door opening angle, the arc segment 337 and the first mating segment 346 press against each other to allow the door body 2 to easily hover when the door opening angle is within the first angle.

[0163] In some other possible implementations of the embodiments of the present application, refer to Figure 12-Figure 18 The second limiting portion may include a matching protrusion 344 and an auxiliary protrusion 345. The auxiliary protrusion 345 may be located between the matching protrusion 344 and the first end 341 of the elastic sheet 34.

[0164] The matching protrusion 344 and the auxiliary protrusion 345 both protrude in a direction away from the fourth connecting rod 334, that is, the side of the matching protrusion 344 away from the fourth connecting rod 334 protrudes in a direction away from the fourth connecting rod 334, and the side of the matching protrusion 344 facing the fourth connecting rod 334 can form a depression away from the fourth connecting rod 334, and the matching protrusion 344 can be formed by bending a part of the spring sheet 34 toward the second connecting rod 332, so as to construct the matching protrusion 344 on the spring sheet 34. The side of the auxiliary protrusion 345 away from the fourth connecting rod 334 protrudes in a direction away from the fourth connecting rod 334, and the side of the auxiliary protrusion 345 facing the fourth connecting rod 334 can form a depression away from the fourth connecting rod 334, and the auxiliary protrusion 345 can be formed by bending a part of the spring sheet 34 toward the second connecting rod 332, so as to construct the auxiliary protrusion 345 on the spring sheet 34.

[0165] The mating protrusion 344 and the auxiliary protrusion 345 are configured to abut against the second link 332 when the door body 2 is opened to a set door opening angle.

[0166] When the door body 2 is opened to the set door opening angle, the matching protrusion 344 and the auxiliary protrusion 345 are in contact with the second connecting rod 332 at the same time. When the door body 2 still has the tendency to open, the second connecting rod 332 presses the matching protrusion 344 and the auxiliary protrusion 345 toward the fourth connecting rod 334, and causes the matching protrusion 344 to undergo elastic deformation. Since the matching protrusion 344 and the auxiliary protrusion 345 are elastic, the matching protrusion 344 and the auxiliary protrusion 345 will exert a force directed from the spring sheet 34 to the fourth connecting rod 334 on the second connecting rod 332 after the elastic deformation. The elastic force of the second link 332 can offset at least part of the pressure from the second link 332 on the matching protrusion 344 and the auxiliary protrusion 345, that is, buffer at least part of the door opening force, thereby reducing the possibility of the angle α between the second link 332 and the third link 333 continuing to decrease, thereby reducing the possibility of the opening angle of the door body 2 being greater than the set opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessive opening angle of the door body 2.

[0167] In some possible embodiments, a first limiting portion may be constructed on the side of the second connecting rod 332 facing the first connecting rod 331, and the matching protrusion 344 and the auxiliary protrusion 345 are constructed to abut against the first limiting portion when the door body 2 is opened to a set door opening angle.

[0168] In some possible embodiments, the first limiting portion that matches the matching protrusion 344 and the auxiliary protrusion 345 may be a limiting edge 339 configured on the side of the second connecting rod 332 facing the first connecting rod 331. The limiting edge 339 may be a plane, or have a certain undulation relative to the plane, as long as the opening angle of the door body 2 is the set opening angle, the limiting edge 339 can abut against the matching protrusion 344 and the auxiliary protrusion 345.

[0169] When the door body 2 is opened to the set door opening angle, the limiting edge 339 abuts against the matching protrusion 344 and the auxiliary protrusion 345 at the same time (refer to Fig.16 When the door body 2 still has the tendency to open, the limiting edge 339 squeezes the matching protrusion 344 and the auxiliary protrusion 345 and causes the matching protrusion 344 and the auxiliary protrusion 345 to undergo elastic deformation. Since the matching protrusion 344 and the auxiliary protrusion 345 are elastic, the matching protrusion 344 and the auxiliary protrusion 345 will exert an elastic force directed from the spring sheet 34 to the second connecting rod 332 on the limiting edge 339 after the elastic deformation. The elastic force can offset at least part of the pressure from the limiting edge 339 on the matching protrusion 344 and the auxiliary protrusion 345, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle α between the second connecting rod 332 and the third connecting rod 333 continues to decrease, thereby reducing the possibility that the door opening angle of the door body 2 is greater than the set door opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessively large door opening angle of the door body 2.

[0170] In some possible embodiments, the first limiting portion matched with the matching protrusion 344 and the auxiliary protrusion 345 may be a limiting protrusion (not shown in the drawings) configured on the side of the second connecting rod 332 facing the first connecting rod 331. The limiting protrusion may protrude toward the first connecting rod 331.

[0171] When the door body 2 is opened to the set door opening angle, the limiting protrusion abuts against the matching protrusion 344 and the auxiliary protrusion 345 at the same time. When the door body 2 still has the tendency to open, the limiting protrusion squeezes the matching protrusion 344 and the auxiliary protrusion 345 and causes the matching protrusion 344 and the auxiliary protrusion 345 to undergo elastic deformation. Since the matching protrusion 344 and the auxiliary protrusion 345 are elastic, the matching protrusion 344 and the auxiliary protrusion 345 will exert an elastic force from the spring sheet 34 to the second connecting rod 332 on the limiting protrusion after elastic deformation. The elastic force can offset at least part of the pressure from the limiting protrusion on the matching protrusion 344 and the auxiliary protrusion 345, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle α between the second connecting rod 332 and the third connecting rod 333 will continue to decrease, thereby reducing the possibility that the opening angle of the door body 2 is greater than the set opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessive opening angle of the door body 2.

[0172] In some possible embodiments, the first limiting portion matched with the matching protrusion 344 and the auxiliary protrusion 345 may be a limiting recess (not shown in the drawings) configured on the side of the second connecting rod 332 facing the first connecting rod 331. The limiting recess may be recessed in a direction away from the first connecting rod 331.

[0173] When the door body 2 is opened to the set door opening angle, the matching protrusion 344 and the auxiliary protrusion 345 move to the limiting recess at the same time and abut against the limiting recess. When the door body 2 still has the tendency to open, the limiting recess squeezes the matching protrusion 344 and the auxiliary protrusion 345, and causes the matching protrusion 344 and the auxiliary protrusion 345 to undergo elastic deformation. Since the matching protrusion 344 and the auxiliary protrusion 345 are elastic, the matching protrusion 344 and the auxiliary protrusion 345 will exert an elastic force from the spring sheet 34 to the second connecting rod 332 on the limiting recess after elastic deformation. The elastic force can offset at least part of the pressure from the limiting recess on the matching protrusion 344 and the auxiliary protrusion 345, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle α between the second connecting rod 332 and the third connecting rod 333 continues to decrease, thereby reducing the possibility that the door opening angle of the door body 2 is greater than the set door opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessively large door opening angle of the door body 2.

[0174] In the implementation mode where the spring sheet 34 is elastic, a circumferential side wall of the second connecting rod 332 at one end away from the fixing seat 31 may be configured with a pressing portion 336 , and the pressing portion 336 is adjacent to one end of the limiting edge 339 close to the hinge arm 32 .

[0175] Before the door body 2 is opened to the set door opening angle, the pressing portion 336 and the matching protrusion 344 are pressed and matched with each other, and the pressing portion 336 presses the matching protrusion 344, causing the matching protrusion 344 to deform along the pressing direction. The deformation causes the matching protrusion 344 to apply an elastic force to the pressing portion 336, and the elastic force increases the pressure between the matching protrusion 344 and the pressing portion 336, thereby increasing the friction between the matching protrusion 344 and the pressing portion 336, and further making it difficult for the pressing portion 336 and the spring sheet 34, as well as the second connecting rod 332 and the third connecting rod 333 to rotate relative to each other, so that the door body 2 is not easy to continue to rotate relative to the box body 1 under the influence of the inertia, dead weight or manufacturing deviation of the door body 2 after the external force of opening the door is released.

[0176] In addition, the elastic force applied by the spring sheet 34 on the pressing portion 336 can offset at least part of the pressure of the pressing portion 336 on the spring sheet 34, thereby buffering at least part of the door opening force or door closing force, reducing the rotation speed of the door body 2, and weakening the impact force when the door body 2 is opened and closed.

[0177] The matching protrusion 344 and the auxiliary protrusion 345 can cooperate with the limiting edge 339 when the door body 2 is opened to the set door opening angle to reduce the possibility that the opening angle of the door body 2 is greater than the set door opening angle. When the distance between the first end 341 and the second end 342 of the spring sheet 34 remains unchanged, the matching protrusion 344 and the auxiliary protrusion 345 can also increase the extension length of the spring sheet 34, so that the deformation of the spring sheet 34 can be increased when the door opening angle of the door body 2 is less than the set door opening angle, thereby increasing the elastic force F applied by the spring sheet 34 to the pressing portion 336, and increasing the possibility of the door body 2 realizing automatic closing or hovering.

[0178] In some possible implementations of the present application, the pressing portion 336 may include an arc segment 337. The axis corresponding to the arc segment 337 is collinear with the axis of the first pivot shaft 301. Figure 13-Figure 15 When the mating protrusion 344 and the arc segment 337 are pressed against each other, the direction of the elastic force of the mating protrusion 344 on the arc segment 337 passes through the axis of the first pivot shaft 301. The arc segment 337 presses the mating protrusion 344, causing the spring piece 34 to deform along the pressing direction. The deformation causes the spring piece 34 to apply an elastic force F to the arc segment 337, and the direction of the elastic force F passes through the axis of the first pivot shaft 301, so that the pressure between the mating protrusion 344 and the arc segment 337 increases, thereby increasing the friction force between the mating protrusion 344 and the arc segment 337, thereby achieving a certain damping effect on the movement of the hinge 3, and further making it difficult for the arc segment 337 and the mating protrusion 344, as well as the second connecting rod 332 and the third connecting rod 333 to continue to rotate relative to each other under the influence of the inertia, dead weight or manufacturing deviation of the door body 2. In this way, the door body 2 can be easily suspended after the external force of opening the door is released, so as to facilitate the user to take and put items in the accommodating cavity.

[0179] It should be noted that the arc segment 337 may be in an arc shape, and the arc segment 337 may also have a certain deviation relative to the arc shape, as long as the arc segment 337 as a whole conforms to the law of rotation around the axis of the first pivot shaft 301 .

[0180] In the implementation mode where the pressing portion 336 includes the arc segment 337, the pressing portion 336 may further include a flange segment 338. The flange segment 338 is adjacent to the end of the arc segment 337 close to the door body 2. The distance between the flange segment 338 and the axis of the first pivot shaft 301 gradually increases from the end away from the arc segment 337 to the end close to the arc segment 337.

[0181] As the door body 2 gradually opens from a closed state, the mating protrusion 344 can press and cooperate with the flange section 338 and the arc section 337 in turn, and the spring sheet 34 deforms along the pressing direction, which causes the spring sheet 34 to apply elastic force to the flange section 338 and the arc section 337.

[0182] When the mating protrusion 344 is pressed against the flange section 338, Fig.12 The elastic force F of the spring sheet 34 on the flange section 338 has two mutually perpendicular force components, one of which F1 passes through the axis of the first pivot shaft 301, and the other F2 points to the box body 1. The force component F1 pointing to the axis of the first pivot shaft 301 causes the spring sheet 34 to be pressed against the flange section 338, that is, the pressure between the spring sheet 34 and the flange section 338 is increased, thereby increasing the friction between the spring sheet 34 and the flange section 338. The force component F2 pointing to the box body 1 can push the flange section 338 toward the box body 1, so that the end of the second connecting rod 332 that is away from the fixing seat 31 moves toward the fixing seat 31, driving the door body 2 to move toward the box body 1, forming a power to close the door, and increasing the possibility of the door body 2 closing automatically.

[0183] Due to the friction between the spring piece 34 and the flange section 338, the door body 2 can be closed slowly during the automatic closing process, which 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 door body 2 closing too quickly, and can also reduce the possibility of pinching hands due to the door body 2 closing too quickly.

[0184] When the mating protrusion 344 is pressed against the flange section 338, as the door opening angle of the door body 2 gradually increases, the spring piece 34 first cooperates with the end of the flange section 338 away from the arc section 337, and then the portion of the flange section 338 used for pressing against the spring piece 34 gradually approaches the arc section 337 until it cooperates with the end of the flange section 338 close to the arc section 337. In this process, the compression of the spring piece 34 by the flange section 338 gradually increases, that is, the spring piece 34 gradually moves away from the first pivot axis 301 under the pressure of the flange section 338, and the deformation of the spring piece 34 gradually increases. Therefore, the elastic force F of the spring piece 34 on the flange section 338 also gradually increases. In this way, as the door opening angle gradually increases, the component force F2 also increases accordingly, so that the door body 2 can rotate a larger angle during the door closing process, thereby increasing the possibility of automatic closing of the door body 2.

[0185] When the mating protrusion 344 and the arc segment 337 are pressed together, Figure 13-Figure 15 The direction of the elastic force F of the spring piece 34 on the arc segment 337 passes through the axis of the first pivot shaft 301. Therefore, the elastic force F makes it difficult for the pressing portion 336 to rotate relative to the spring piece 34, thereby increasing the pressure between the spring piece 34 and the pressing portion 336. The pressure passes through the axis of the first pivot shaft 301, thereby increasing the friction between the spring piece 34 and the pressing portion 336, making it difficult for relative rotation between the spring piece 34 and the pressing portion 336, and between the second connecting rod 332 and the third connecting rod 333. In this way, the hinge 3 is not likely to change position after the external force for opening the door is released, thereby increasing the possibility of the door body 2 remaining in the open position.

[0186] In some possible implementations of the embodiments of the present application, when the door body 2 is opened from a closed state to a first angle, the mating protrusion 344 and the flange section 338 can be pressed against each other to increase the possibility of automatic closing of the door body 2 after the external force for opening the door is released when the opening angle of the door body 2 is within the first angle.

[0187] When the opening angle of the door body 2 is between the first angle and the maximum opening angle, the mating protrusion 344 and the arc segment 337 can press against each other to increase the possibility of the door body 2 hovering after the external force of opening the door is released when the opening angle of the door body 2 is between the first angle and the maximum opening angle.

[0188] The first angle may be greater than 0° and less than or equal to 30°, so as to increase the possibility of the door body 2 automatically closing after the door opening external force is released at a smaller door opening angle.

[0189] In some possible implementations of the embodiments of the present application, the tangent of one end of the flange segment 338 close to the arc segment 337 and the tangent of one end of the arc segment 337 close to the flange segment 338 can be colinear, so that the distance between the end of the flange segment 338 close to the arc segment 337 and the axis of the first pivot shaft 301 is equal to the distance between the arc segment 337 and the axis of the first pivot shaft 301, and the elastic force of the spring piece 34 on the critical position of the flange segment 338 and the arc segment 337 is consistent with the elastic force on the arc segment 337, and the mating protrusion 344 transitions from mating with the flange segment 338 to mating with the arc segment 337 more smoothly, which correspondingly reduces the variation amplitude of the door opening resistance of the door body 2 in the corresponding door opening process.

[0190] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0191] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: It comprises a box body, a door body and a hinge, wherein the door body is rotatably connected to the box body through the hinge; The hinge comprises: A fixing seat connected to the box; A hinge arm connected to the door body; A transmission assembly, comprising a first link, a second link, a third link and a fourth link, wherein the first link and the second link are both pivotally connected to the fixing seat, the first link is closer to the box body than the second link, the third link and the fourth link are both pivotally connected to the hinge arm, the third link is closer to the side wall of the box body than the fourth link, the third link and the fourth link are also pivotally connected to the first link, the end of the second link facing away from the fixing seat is pivotally connected to the third link, a first limiting portion is configured on a side of the second link facing the first link, a pressing portion is configured on a circumferential side wall of an end of the second link facing away from the fixing seat, and the pressing portion is closer to the hinge arm than the first limiting portion; A spring sheet, both ends of which are connected to the two ends of the third connecting rod. The spring sheet presses against the pressing portion within at least a partial angle range during the opening process of the door body, thereby generating elastic deformation to damp the movement of the hinge. A second limiting portion is configured on the side of the spring sheet facing the second connecting rod. The second limiting portion abuts against the first limiting portion to limit the position when the door body is opened to a set opening angle.

2. The refrigerator according to claim 1, characterized in that: The second limiting portion includes a matching protrusion, and the matching protrusion protrudes in a direction away from the fourth connecting rod.

3. The refrigerator according to claim 2, characterized in that: The second limiting portion further includes an auxiliary protrusion, and the auxiliary protrusion protrudes in a direction away from the fourth connecting rod; The matching protrusion and the auxiliary protrusion are configured to abut against and limit the first limiting portion at the same time when the door body is opened to a set door opening angle.

4. The refrigerator according to claim 2, characterized in that: The first limiting portion is a limiting recess, which is recessed in a direction away from the first connecting rod, and the second limiting portion is configured to move into the limiting recess and abut against the limiting recess when the door body is opened to a set door opening angle; or The first limiting portion is a limiting edge, and the limiting edge is configured to abut against the second limiting portion when the door body is opened to a set door opening angle.

5. The refrigerator according to claim 3, characterized in that: The matching protrusion is located on a side of the auxiliary protrusion away from the first connecting rod; Before the door body is opened to a set door opening angle, the matching protrusion and the pressing portion are pressed and matched with each other.

6. The refrigerator according to any one of claims 1 to 5, characterized in that: The second connecting rod rotates relative to the third connecting rod around the axis of the first pivot shaft, the pressing portion comprises an arc segment, and the axis corresponding to the arc segment is colinear with the axis of the first pivot shaft; When the spring sheet and the arc segment are pressed against each other, the direction of the elastic force of the spring sheet on the arc segment passes through the axis of the first pivot shaft.

7. The refrigerator according to claim 6, characterized in that: The elastic sheet is further configured with a matching section, and the matching section has a pressing surface on a side facing the second connecting rod, the pressing surface is a curved surface, and the pressing surface and the arc section are pressed and matched with each other.

8. The refrigerator according to claim 7, characterized in that: The pressing surface is an arc surface, the axis corresponding to the pressing surface is located on the side of the spring sheet facing the arc segment, and the pressing surface and the arc segment are at least partially fitted.

9. The refrigerator according to claim 6, characterized in that: The pressing portion further includes a flange section, the flange section is adjacent to an end of the arc section close to the door body, and the distance between the flange section and the axis of the first pivot shaft gradually increases from the end away from the arc section to the end close to the arc section; The elastic force of the elastic sheet on the flange section has two mutually perpendicular force components, wherein the direction of one force component passes through the axis of the first pivot shaft, and the direction of the other force component points to the box body.

10. The refrigerator according to any one of claims 1 to 5, characterized in that: The thickness of the spring sheet is between 1.5 mm and 2.5 mm, and the ratio of the thickness of the spring sheet to the unfolded length of the spring sheet is between 0.01 and 0.

03.

11. A refrigerator, characterized in that: Including box body, door body and hinge; The hinge comprises: A fixing seat connected to the box; A hinge arm connected to the door body; A transmission assembly, comprising a first link, a second link, a third link and a fourth link, wherein the first link and the second link are both pivotally connected to the fixing seat, the first link is closer to the box body than the second link, the third link and the fourth link are both pivotally connected to the hinge arm, the third link is closer to the side wall of the box body than the fourth link, the third link and the fourth link are also pivotally connected to the first link, and the end of the second link facing away from the fixing seat is pivotally connected to the third link; A spring sheet, both ends of which are connected to the two ends of the third connecting rod. The spring sheet is constructed to press and cooperate with the circumferential side wall of the end of the second connecting rod that is away from the fixed seat within at least a partial angle range during the opening process of the door body, thereby generating elastic deformation to achieve a damping effect on the movement of the hinge, and stop on the side of the second connecting rod facing the first connecting rod when the door body is opened to a set opening angle.

Images