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 refrigerator comprises a refrigerator body, a door body and a hinge, the hinge comprises a fixing base, a hinge arm, a transmission assembly, an elastic telescopic rod and an elastic piece, the fixing base is connected to the refrigerator body, the hinge arm is connected to the door body, the transmission assembly is connected between the fixing base and the hinge arm, and the elastic telescopic rod and the elastic piece are arranged on the transmission assembly. In the rotating process of the door body, elastic deformation is generated within at least part of the angle range, and the motion of the hinge is damped, so that at least part of door opening force or door closing force is buffered. The elastic piece abuts against the transmission assembly for limiting when the door body is opened to the set door opening angle, so that the possibility that the maximum door opening angle of the door body is larger 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 fixing base caused by the fact that the door opening angle of the door body is too large 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, it is difficult to limit the door of the relevant refrigerator after it is opened. When the door opening force applied to the door is too large, the door still has a large opening impact force after it is opened to bypass the edge of the cabinet, causing the hinge and the door to pull against each other, which can easily damage the hinge and the door. 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 includes:

[0008] A fixing seat connected to the box body;

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

[0010] A transmission assembly, comprising a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, wherein the first end of the first connecting rod and the first end of the second connecting rod are both pivotally connected to a fixing seat, the first end of the second connecting rod is farther away from a front wall of a box body than the first end of the first connecting rod, the first end of the third connecting rod and the first end of the fourth connecting rod are both pivotally connected to a hinge arm, the first end of the third connecting rod is closer to a side wall of the box body close to the fixing seat than the first end of the fourth connecting rod, the second end of the first connecting rod is pivotally connected to the second end of the fourth connecting rod, the second end of the third connecting rod is pivotally connected to the first connecting rod, and the second end of the second connecting rod is pivotally connected to the third connecting rod;

[0011] An elastic telescopic rod, arranged on the fourth connecting rod, wherein the elastic telescopic rod elastically presses against the hinge arm within at least a partial angle range during the opening process of the door body and realizes a damping effect on the movement of the hinge;

[0012] The spring piece is arranged on the third connecting rod. During the process of opening the door body, the spring piece elastically presses against the second connecting rod within at least a partial angle range and realizes a damping effect on the movement of the hinge. A first limiting portion is constructed on the side of the spring piece facing the second connecting rod. When the door body is opened to a set opening angle, the first limiting portion presses against the side of the second connecting rod facing the first connecting rod to limit the position.

[0013] In the refrigerator of the present embodiment, during the opening process of the door body, the elastic telescopic rod and the spring sheet are squeezed to produce elastic deformation and realize damping effect on the movement of the hinge, thereby buffering at least part of the door opening force and reducing the door opening impact force of the door body at the maximum door opening angle; in addition, the spring sheet stops on the side of the second connecting rod toward the first connecting rod when the door body is opened to the set door opening angle, and when the door body still has a tendency to open, the second connecting rod squeezes the spring sheet, and the spring sheet applies an elastic force from the spring sheet to 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, buffering 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 cabinet and the fixing seat caused by the excessively large door opening angle of the door body.

[0014] In some embodiments of the present application, the elastic telescopic rod includes:

[0015] a first rod;

[0016] The second rod is nested with the first rod;

[0017] A positioning member is arranged at an end of the first rod member away from the second rod member, and the positioning member is arranged on the fourth connecting rod;

[0018] A sliding member is arranged at an end of the second rod member away from the first rod member, the sliding member is slidably arranged along the axis direction of the second rod member relative to the fourth connecting rod, and the sliding member is closer to the hinge arm than the positioning member;

[0019] A spring is sleeved outside the first rod and the second rod, one end of the spring abuts against the positioning member, and the other end of the spring abuts against the sliding member;

[0020] The hinge arm squeezes the sliding member and compresses the spring within at least a partial angle range during the opening process of the door body, and the elastic force of the elastic telescopic rod on the hinge arm realizes a damping effect on the movement of the hinge.

[0021] In this way, the hinge arm squeezes the sliding member within at least a partial angle range during the door opening process. After being squeezed, the sliding member moves toward the spring relative to the fourth connecting rod and compresses the spring. After the spring is compressed, an elastic force is generated, which is directly applied to the sliding member and indirectly transmitted to the hinge arm by the sliding member. The elastic force transmitted from the sliding member to the hinge arm can offset at least part of the pressure from the hinge arm on the sliding member, that is, buffer at least part of the door opening force, thereby achieving a certain damping effect on the movement of the hinge.

[0022] In some embodiments of the present application, a pressing structure is provided on the side of the hinge arm facing away from the door body, and the pressing structure extends between the first end of the third connecting rod and the first end of the fourth connecting rod; the sliding member has a second limiting portion, and the second limiting portion is arranged toward the third connecting rod, and the second limiting portion abuts against the pressing structure for limiting when the door body is opened to a set opening angle.

[0023] In this way, the second limiting portion abuts against the pressing structure to limit the door when the door is opened to the set opening angle, so as to reduce the possibility of the angle continuing to decrease, thereby reducing the possibility of the door opening angle being greater than the set opening angle, so as to limit the door.

[0024] In some embodiments of the present application, the pressing structure has a pressing surface on one side of the first end of the fourth connecting rod; when the door body opens from the first angle to the second angle, the pressing surface presses the sliding member and causes the sliding member to move toward the spring relative to the first rod.

[0025] In this way, when the door body opens from a first angle to a second angle, the pressing surface presses the sliding member and causes the sliding member to move toward the spring relative to the fourth connecting rod. In this process, since the compression amount of the spring gradually increases, the elastic force of the spring gradually increases, and the damping effect of the spring on the hinge movement gradually increases.

[0026] In the process of closing the door body from the second angle to the first angle, the compression amount of the spring gradually decreases, the elastic force of the spring on the hinge arm gradually decreases, the elastic force of the spring is gradually released, and the elastic potential energy of the spring is converted into kinetic energy, so that the spring returns to the state of the spring when the door opening angle is the first angle, driving the door body to gradually close to the first angle, that is, the elastic force of the spring is released to form an assist force for closing the door body, so that the external force required for closing the door body is reduced, so that the door body is more labor-saving when closing.

[0027] In some embodiments of the present application, the sliding member is configured with a sliding channel, which extends along the axial direction of the second rod; the fourth connecting rod rotates around the first pivot axis relative to the hinge arm, and the first pivot axis is slidably disposed in the sliding channel.

[0028] Such arrangement enables the sliding member to slide relative to the fourth connecting rod along the axial direction of the second rod.

[0029] In some embodiments of the present application, the pressure surface extends obliquely from an end close to the inner side of the door body to an end away from the inner side of the door body, and the end of the pressure surface close to the inner side of the door body is closer to the first end of the fourth connecting rod than the end away from the inner side of the door body, and the distance between the pressure surface and the axis of the first pivot shaft gradually increases from the end close to the inner side of the door body to the end away from the inner side of the door body; the sliding member has a first edge on the side facing the third connecting rod; in the process of the door body opening from the first angle to the second angle, the end of the first edge facing away from the second rod is pressed and matched with the pressure surface, and the position on the pressure surface that matches with the first edge moves toward the inner side of the door body.

[0030] In this way, when the door body is opened from the first angle to the second angle, the distance between the pressure surface and the axis of the first pivot shaft gradually decreases. Since the position of the first pivot shaft relative to the fourth connecting rod remains unchanged, the pressure surface will squeeze the sliding member and make the sliding member slide along the axis direction of the second connecting rod, and gradually compress the spring, so that the elastic force of the spring gradually increases, and the damping effect of the elastic force of the spring on the hinge gradually increases.

[0031] In the process of closing the door body from the second angle to the first angle, the distance between the pressure surface and the axis of the first pivot shaft gradually increases, the compression of the spring gradually decreases, the elastic force of the spring is gradually released, and the elastic potential energy of the spring is converted into kinetic energy, so that the spring returns to the state of the spring when the opening angle of the door body is the first angle, driving the door body to gradually close to the first angle, that is, the elastic force of the spring is released to form an assist for closing the door body, thereby reducing the external force required to close the door body, thereby making it more labor-saving to close the door body.

[0032] In some embodiments of the present application, during the process of the door body opening from the third angle to the fourth angle, the pressing surface and the first edge press against each other, and the force of the pressing surface on the first edge is directed toward the first pivot axis.

[0033] With such arrangement, the elastic force of the first edge on the pressing surface is in opposite direction to the direction of the force, and the extension line of the elastic force passes through the first pivot axis. Therefore, the force arm from the rotation axis of the first pivot axis to the elastic force is small, and the elastic force is not easy to generate a force arm that causes the hinge arm to rotate around the first pivot axis. After the external force applied to the door body is released, the door body can easily be suspended to facilitate taking and placing items from the storage cavity.

[0034] In some embodiments of the present application, the sliding member has a second edge on the side facing away from the third connecting rod, and the distance between the second edge and the axis of the first pivot shaft gradually decreases from the end close to the third connecting rod to the end away from the third connecting rod; when the door body is in a closed state, the second edge is spaced apart from the hinge arm.

[0035] With such an arrangement, when the door body is closed from the second angle, the second edge and the hinge arm are spaced apart, thereby reducing the possibility of scratching between the second edge and the hinge arm.

[0036] In some embodiments of the present application, the positioning member is provided with a through hole; the first connecting rod rotates around the second pivot axis relative to the fourth connecting rod, and the second pivot axis is penetrated by the through hole.

[0037] This arrangement simplifies the assembly structure of the positioning member and the transmission assembly.

[0038] In some embodiments of the present application, the first limiting portion includes a limiting protrusion, and the limiting protrusion protrudes in a direction away from the fourth connecting rod.

[0039] With such arrangement, when the door body is opened to the set door opening angle, the limiting protrusion and the second connecting rod abut against one side of the first connecting rod, and when the door body still has a tendency to open, the second connecting rod squeezes the limiting protrusion toward the fourth connecting rod and elastically deforms the limiting protrusion. Since the limiting protrusion is elastic, the limiting protrusion applies an elastic force from the limiting protrusion to the second connecting rod after elastic deformation. The elastic force can offset at least part of the pressure from the second connecting rod on the limiting 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. 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 It is a schematic diagram of the structure of the refrigerator according to the embodiment of the present application when the door is at a set door opening angle from a first viewing 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 4 It 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 a set door 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 the refrigerator according to an embodiment of the present application when the door opening angle is a second angle;

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

[0048] Figure 8 This is a schematic diagram of the structure of an elastic telescopic rod in a refrigerator according to an embodiment of the present application;

[0049] Fig. 9 This is a schematic diagram of the structure of the spring piece in the refrigerator according to an embodiment of the present application;

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

[0051] Description of reference numerals:

[0052] 1-Box;

[0053] 2- portal;

[0054] 3- Hinge;

[0055] 31-fixed seat;

[0056] 32- hinged arm;

[0057] 321-pressing structure; 322-pressing surface;

[0058] 33- transmission assembly;

[0059] 331-first connecting rod; 332-second connecting rod;

[0060] 335-limiting concave portion; 337-curve segment;

[0061] 333-third connecting rod; 334-fourth connecting rod;

[0062] 307-first pivot axis; 306-second pivot axis;

[0063] 302 - sixth pivot axis; 303 - third pivot axis;

[0064] 304 - fourth pivot axis; 305 - fifth pivot axis;

[0065] 301-seventh pivot axis;

[0066] 34-shrapnel;

[0067] 341-first end; 342-second end;

[0068] 344-limiting convex part; 346-matching section;

[0069] 347-Mating surface;

[0070] 35-elastic telescopic rod;

[0071] 351-first rod; 352-second rod;

[0072] 353-positioning member; 354-sliding member;

[0073] 355-sliding channel; 356-first edge;

[0074] 357 - second edge; 358 - second limiting portion;

[0075] 359-spring; 3531-through hole;

[0076] 4-Cabinet;

[0077] 41-end face; 42-edge. DETAILED DESCRIPTION

[0078] 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. When the door opening force is too large, after the door body is opened to the maximum opening angle, there is still a large door opening impact force, which causes the hinge and the door body to pull each other, causing damage to the hinge and the door body.

[0079] In view of this, the refrigerator in the embodiment of the present application is provided with an elastic telescopic rod and a spring sheet in the hinge. During the opening process of the door body, the elastic telescopic rod and the spring sheet are squeezed to produce elastic deformation and realize damping effect on the movement of the hinge, thereby buffering at least part of the door opening force and reducing the door opening impact force of the door body at the maximum door opening angle; in addition, the spring sheet is stopped on the side of the second connecting rod toward the first connecting rod when the door body is opened to the set door opening angle. When the door body still has a tendency to open, the second connecting rod squeezes the spring sheet. After elastic deformation, the spring sheet will apply 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, buffering 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 of the door body 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 fixing seat caused by the excessively large door opening angle of the door body.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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 .

[0091] 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 .

[0092] 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.

[0093] 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 .

[0094] 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.

[0095] 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 .

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] The third link 333 can rotate relative to the first link 331 around the sixth 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 seventh 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 second pivot axis 306. The hinge arm 32 can rotate relative to the fourth link 334 around the first pivot axis 307.

[0102] That is, the third link 333 can rotate relative to the first link 331 around the axis of the sixth pivot axis 302. The hinge arm 32 can rotate relative to the third link 333 around the axis of the third pivot axis 303. The third link 333 can rotate relative to the second link 332 around the axis of the seventh pivot axis 301. The second link 332 can rotate relative to the fixing seat 31 around the axis of the fourth pivot axis 304. The first link 331 can rotate relative to the fixing seat 31 around the axis of the fifth pivot axis 305. The fourth link 334 can rotate relative to the first link 331 around the axis of the second pivot axis 306. The hinge arm 32 can rotate relative to the fourth link 334 around the axis of the first pivot axis 307.

[0103] 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 sixth pivot axis 302 , the axis of the third pivot axis 303 , the axis of the second pivot axis 306 and the axis of the first pivot axis 307 form a quadrilateral.

[0104] 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 sixth pivot axis 302 , the axis of the seventh pivot axis 301 , the axis of the fourth pivot axis 304 and the axis of the fifth pivot axis 305 form a quadrilateral.

[0105] In some possible embodiments, reference Figure 5 , Figure 6 and Figure 7 When the door body 2 is opened, the hinge 3 drives the door body 2 to change its position under the restraint of the above two quadrilaterals, so that the hinge arm 32 and the door body 2 move along the positive direction of the depth direction Y of the refrigerator when rotating relative to the cabinet 1, and move outward along the positive direction of the width direction X of the refrigerator at the same time.

[0106] 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.

[0107] In some possible implementations of the present application, reference is made to Figure 5-Figure 8 The hinge 3 may include an elastic telescopic rod 35 , and the elastic telescopic rod 35 is arranged on the fourth connecting rod 334 .

[0108] In some possible implementations of the present application, reference is made to Figure 5-Figure 8 The elastic telescopic rod 35 may include a first rod member 351 , a second rod member 352 , a positioning member 353 , a sliding member 354 and a spring 359 .

[0109] The positioning member 353 is connected to one end of the first rod 351 in the extending direction.

[0110] The positioning member 353 is disposed on the fourth connecting rod 334 .

[0111] In some possible implementations of the present application, reference is made to Figure 5 and Figure 8 The positioning member 353 may be block-shaped. The positioning member 353 may be provided with a through hole 3531. The second pivot shaft 306 may be inserted into the through hole 3531 so that the positioning member 353 is not easily moved relative to the fourth connecting rod 334 along the radial direction of the second pivot shaft 306.

[0112] In some possible implementations of the present application, the positioning member 353 may be disposed at a position between the first end of the fourth connecting rod 334 and the second end of the fourth connecting rod 334. The positioning member 353 may be connected to the fourth connecting rod 334 via a positioning shaft. Exemplarily, the positioning member 353 may be block-shaped, the positioning member 353 may be provided with a through hole 3531, the positioning shaft is penetrated in the through hole 3531, and the end of the positioning shaft along the axial direction may be connected to the fourth connecting rod 334, so that during the opening and closing process of the hinge 3, the positioning member 353 is not easy to move relative to the fourth connecting rod 334 along the radial direction of the positioning shaft.

[0113] The sliding member 354 is connected to one end of the second rod 352 in the extending direction.

[0114] The second rod 352 and the first rod 351 are nested, and the second rod 352 can be sleeved outside the first rod 351 , or the first rod 351 can be sleeved outside the second rod 352 .

[0115] The spring 359 is sleeved outside the first rod 351 and the second rod 352. Two ends of the spring 359 are respectively in contact with the positioning member 353 and the sliding member 354.

[0116] When the spring 359 is at its original length, a portion of the first rod 351 and a portion of the second rod 352 are nested.

[0117] When the spring 359 is compressed, the overlap between the first rod 351 and the second rod 352 increases, and the length of the entire structure consisting of the first rod 351 and the second rod 352 decreases.

[0118] The sliding member 354 may be slidably disposed on the fourth connecting rod 334 . The sliding direction of the sliding member 354 relative to the fourth connecting rod 334 may be parallel to the axial direction of the second rod 352 .

[0119] In some possible implementations of the present application, reference is made to Figure 5 and Figure 8 The sliding member 354 may be configured with a sliding channel 355. The sliding channel 355 extends along the axis direction of the second rod 352. The fourth connecting rod 334 rotates around the first pivot shaft 307 relative to the hinge arm 32, and the first pivot shaft 307 is slidably disposed in the sliding channel 355, so that the sliding member 354 can slide relative to the fourth connecting rod 334 along the axis direction of the second rod 352.

[0120] In some possible implementations of the embodiments of the present application, a sliding column may be provided on the sliding member 354, and a sliding groove may be provided on the fourth connecting rod 334. The extension direction of the sliding groove may be parallel to the axial direction of the second rod 352. The sliding column is slidably arranged in the sliding groove, so that the sliding member 354 can slide relative to the fourth connecting rod 334 along the axial direction of the second rod 352.

[0121] The hinge arm 32 squeezes the sliding member 354 within at least a partial angle range during the opening process of the door body 2. After being squeezed, the sliding member 354 moves toward the spring 359 relative to the fourth connecting rod 334 and compresses the spring 359. After being compressed, the spring 359 generates an elastic force, which is directly applied to the sliding member 354 and indirectly transmitted to the hinge arm 32 by the sliding member 354. The elastic force F1 transmitted from the sliding member 354 to the hinge arm 32 can offset at least part of the pressure from the hinge arm 32 on the sliding member 354, that is, buffer at least part of the door opening force, thereby achieving a certain damping effect on the movement of the hinge 3.

[0122] In some possible implementations of the present application, the elastic telescopic rod 35 may include a spring and at least two mutually nested rods, the spring may be arranged inside the nested rods, and the two ends of the spring are respectively in contact with the rods at the two ends. One of the rods at the two ends may be connected to the second pivot axis, and the other may be provided with a slideway, the extension direction of the slideway may be parallel to the axis direction of the rod, and the first pivot axis 307 is slidably arranged in the slideway.

[0123] The hinge arm 32 squeezes the elastic telescopic rod 35 within at least a partial angle range during the opening process of the door body 2. After being squeezed, the elastic telescopic rod 35 compresses the spring 359. After being compressed, the spring 359 generates elastic force, which is applied to the hinge arm 32 by the elastic telescopic rod 35 to offset at least part of the pressure from the hinge arm 32 on the elastic telescopic rod 35, that is, to buffer at least part of the door opening force, thereby achieving a certain damping effect on the movement of the hinge 3.

[0124] In some possible implementations of the present application, reference is made to Figure 5 , Figure 6 and Figure 7 In the quadrilateral surrounded by the first link 331, the third link 333, the fourth link 334 and the hinge arm 32, as the opening angle of the door body 2 gradually increases, the angle α formed by connecting the axis of the second pivot axis 306, the axis of the first pivot axis 307 and the axis of the third pivot axis 303 in sequence gradually decreases.

[0125] refer to Figure 5-Figure 7 The hinge arm 32 may be provided with a pressing structure 321 on the side facing away from the door body 2. The pressing structure 321 may be block-shaped. The pressing structure 321 may extend from the hinge arm 32 to between the first end of the third connecting rod 333 and the first end of the fourth connecting rod 334.

[0126] The sliding member 354 may have a second limiting portion 358 . The second limiting portion 358 is disposed toward the third connecting rod 333 .

[0127] In some possible implementations of the present application, Figure 5-Figure 7 The second limiting portion 358 may be an edge formed by a side of the sliding member 354 facing the third connecting rod 333 and a side of the sliding member 354 facing the spring 359 .

[0128] In some possible implementations of the embodiment of the present application, the second limiting portion 358 may be a protrusion disposed on a side of the sliding member 354 facing the third connecting rod 333 .

[0129] The second limiting portion 358 in the above implementation method abuts against the pressing structure 321 to limit the door body 2 when the door body 2 is opened to the set opening angle, so as to reduce the possibility of the angle α continuing to decrease, thereby reducing the possibility of the opening angle of the door body 2 being greater than the set opening angle, so as to limit the door body 2.

[0130] The set door opening angle may be the maximum door opening angle of the door body 2 .

[0131] In some possible implementations of the embodiment of the present application, a side of the pressing structure 321 facing the first end of the fourth connecting rod 334 may have a pressing surface 322 , and the pressing surface 322 is used for pressing and cooperating with the sliding member 354 .

[0132] refer to Figure 5 and Figure 6 In the process of the door body 2 opening from the first angle to the second angle, the pressing surface 322 presses the sliding member 354 and causes the sliding member 354 to move toward the spring 359 relative to the fourth connecting rod 334. In this process, since the compression amount of the spring 359 gradually increases, the elastic force of the spring 359 gradually increases, and the damping effect of the spring 359 on the movement of the hinge 3 gradually increases.

[0133] The second angle is greater than the first angle, and the first angle may be greater than or equal to 0°. When the first angle is equal to 0°, the door body 2 is in a closed state.

[0134] During the process of closing the door body 2 from the second angle to the first angle, the compression of the spring 359 gradually decreases, the elastic force of the spring 359 on the hinge arm 32 gradually decreases, the elastic force of the spring 359 is gradually released, and the elastic potential energy of the spring 359 is converted into kinetic energy, so that the spring 359 returns to the state of the spring 359 when the opening angle of the door body 2 is the first angle, driving the door body 2 to gradually close to the first angle, that is, the elastic force of the spring 359 is released to form a boost for closing the door body 2, thereby reducing the external force required to close the door body 2, thereby making it more labor-saving to close the door body 2.

[0135] In some possible implementations of the embodiment of the present application, the pressing surface 322 extends obliquely from an end close to the inner side of the door body 2 to an end away from the inner side of the door body 2 .

[0136] In some possible implementations of the present application, reference is made to Figure 5-Figure 7 The pressing surface 322 may be a curved surface.

[0137] In some possible implementations of the embodiment of the present application, the pressing surface 322 may also be a plane.

[0138] An end of the pressing surface 322 close to the inner side of the door body 2 is closer to the first end of the fourth connecting rod 334 than an end of the pressing surface 322 far from the inner side of the door body 2 .

[0139] The distance between the pressing surface 322 and the axis of the first pivot shaft 307 gradually increases from an end close to the inner side of the door body 2 to an end far away from the inner side of the door body 2 .

[0140] The sliding member 354 may have a first edge 356 on one side facing the third link 333 .

[0141] When the door body 2 is opened from the first angle to the second angle, the end of the first edge 356 away from the second rod 352 is pressed against the pressing surface 322 , and the position of the pressing surface 322 that is matched with the first edge 356 moves toward the inside of the door body 2 .

[0142] That is, when the door opening angle of the door body 2 is the first angle, the first edge 356 cooperates with the first position P1 of the pressing surface 322. When the door opening angle of the door body 2 is the second angle, the first edge 356 cooperates with the second position P2 of the pressing surface 322, and the second position P2 is closer to the inner side of the door body 2 than the first position P1. Since the distance between the pressing surface 322 and the axis of the first pivot shaft 307 gradually increases from the end close to the inner side of the door body 2 to the end away from the inner side of the door body 2, the distance L2 between the second position P2 and the axis of the first pivot shaft 307 is smaller than the distance L1 between the first position P1 and the axis of the first pivot shaft 307.

[0143] During the process of the door body 2 opening from the first angle to the second angle, the first edge 356 moves from the first position P1 of the pressing surface 322 to the second position P2, and the distance between the pressing surface 322 and the axis of the first pivot shaft 307 gradually decreases. Since the position of the first pivot shaft 307 relative to the fourth connecting rod 334 remains unchanged, the pressing surface 322 will squeeze the sliding member 354 and make the sliding member 354 slide along the axial direction of the second connecting rod, and gradually compress the spring 359, so that the elastic force of the spring 359 gradually increases, and the damping effect of the elastic force of the spring 359 on the hinge 3 gradually increases.

[0144] In the process of closing the door body 2 from the second angle to the first angle, the first edge 356 moves from the second position P2 of the pressing surface 322 to the first position P1, and the distance between the pressing surface 322 and the axis of the first pivot shaft 307 gradually increases, the compression of the spring 359 gradually decreases, and the elastic force of the spring 359 is gradually released. The elastic potential energy of the spring 359 is converted into kinetic energy, so that the spring 359 returns to the state of the spring 359 when the opening angle of the door body 2 is the first angle, driving the door body 2 to gradually close to the first angle, that is, the elastic force of the spring 359 is released to form a booster for closing the door body 2, thereby reducing the external force required to close the door body 2, thereby making it more labor-saving to close the door body 2.

[0145] In some possible implementations of the present application, reference is made to Figure 6 and Figure 7In the process of the door body 2 opening from the third angle to the fourth angle, the pressing surface 322 and the first edge 356 are pressed against each other, and the force of the pressing surface 322 on the first edge 356 is directed to the first pivot axis 307. The elastic force F1 of the first edge 356 on the pressing surface 322 is opposite to the direction of the force. The extension line of the elastic force F1 passes through the first pivot axis 307. Therefore, the force arm from the rotation axis of the first pivot axis 307 to the elastic force F1 is small. The elastic force F1 is not easy to generate a force arm that causes the hinge arm 32 to rotate around the first pivot axis 307. After the external force applied to the door body 2 is released, the door body 2 can easily be suspended to facilitate the taking and placing of items from the accommodating cavity.

[0146] The third angle may be equal to the second angle. The fourth angle is greater than the third angle. The fourth angle may be a set door opening angle.

[0147] Among them, after the door body 2 is opened to a certain opening angle under the action of external force, when the external force is released, the door body 2 maintains the opening angle before the external force is released, which is called the door body 2 achieving hovering.

[0148] In some possible implementations of the present application, the distance between the first edge 356 and the axis of the first pivot shaft 307 may be equal from the end away from the spring 359 to the end close to the spring 359. For example, the first edge 356 may be in an arc shape, and the center of the circle corresponding to the first edge 356 may coincide with the axis of the first pivot shaft 307. In this way, during the process of the door body 2 opening from the third angle to the fourth angle, the compression amount of the spring 359 does not change, thereby reducing the influence of the change in the elastic force of the spring 359 on the rotation of the door body 2, making it easier for the door body 2 to achieve hovering.

[0149] In some possible implementations of the present application, the sliding member 354 may have a second edge 357 on a side away from the third link 333. The distance between the second edge 357 and the axis of the first pivot shaft 307 gradually decreases from the end close to the third link 333 to the end away from the third link 333. Figure 5 When the door body 2 is in a closed state, the second edge 357 is spaced apart from the hinge arm 32 so that during the process of the door body 2 being closed from the second angle, the second edge 357 and the hinge arm 32 maintain a space therebetween, thereby reducing the possibility of scratching between the second edge 357 and the hinge arm 32.

[0150] In some possible implementations of the present application, reference is made to Figure 5-Figure 7 The hinge 3 may further include a spring sheet 34, which is elastic and will be elastically deformed and have elastic force under the action of an external force.

[0151] In some possible embodiments, the spring 34 may be a leaf spring, which has a simple structure, reliable operation, low cost and easy maintenance.

[0152] 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 .

[0153] In some possible embodiments, reference Figure 5 and Fig. 9 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.

[0154] In some possible embodiments, reference Figure 5 and Fig. 9 The first end 341 of the spring sheet 34 can be arranged around the sixth pivot shaft 302 to reduce the difficulty of assembling the first end 341 of the spring sheet 34 and the sixth pivot shaft 302 .

[0155] In some possible embodiments, reference Figure 5 and Fig. 9 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.

[0156] In some possible embodiments, reference Figure 5 and Fig. 9 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 .

[0157] In some possible embodiments, the elastic sheet 34 may be configured with a first limiting portion.

[0158] In some possible embodiments, reference Figure 5-Figure 7 ,as well as Fig. 9 , the first limiting portion may be a limiting convex portion 344. The limiting convex portion 344 protrudes in a direction away from the fourth connecting rod 334, that is, the side of the limiting convex portion 344 away from the fourth connecting rod 334 protrudes in a direction away from the fourth connecting rod 334, and the side of the limiting convex portion 344 facing the fourth connecting rod 334 may form a recess away from the fourth connecting rod 334. The limiting convex portion 344 may be formed by bending a part of the spring sheet 34 toward the second connecting rod 332, so that the limiting convex portion 344 is constructed on the spring sheet 34.

[0159] The limiting protrusion 344 is configured to press and limit the second connecting rod 332 toward one side of the first connecting rod 331 when the door body 2 is opened to a set door opening angle.

[0160] 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.

[0161] In the quadrilateral surrounded by the fixed seat 31, the first connecting rod 331, the second connecting rod 332 and the third connecting rod 333, as the opening angle of the door body 2 gradually increases, the angle β formed by connecting the axis of the sixth pivot axis 302, the axis of the seventh pivot axis 301 and the axis of the fourth pivot axis 304 in sequence gradually decreases.

[0162] When the door body 2 is opened to the set door opening angle, the limiting protrusion 344 and the second connecting rod 332 abut against one side of the first connecting rod 331. When the door body 2 still has a tendency to open, the second connecting rod 332 presses the limiting protrusion 344 toward the fourth connecting rod 334 and causes the limiting protrusion 344 to undergo elastic deformation. Since the limiting protrusion 344 is elastic, the limiting protrusion 344 exerts an elastic force on the second connecting rod 332 from the limiting protrusion 344 to the second connecting rod 332 after the elastic deformation occurs. Force F3, the elastic force F3 can offset at least part of the pressure from the second connecting rod 332 on the limiting protrusion 344, that is, buffer at least part of the door opening force, thereby reducing the possibility of the angle β between the second connecting rod 332 and the third connecting rod 333 continuing to decrease, thereby reducing the possibility of the door opening angle of the door body 2 being 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 opening angle of the door body 2.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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 manufacture.

[0168] In some possible implementations of the embodiments of the present application, when the ratio of the thickness of the spring clip 34 to the unfolded length of the spring clip 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 clip 34 is 2 mm, the unfolded length of the spring clip 34 is 50 mm, 100 mm or 150 mm, this not only facilitates the production of the spring clip 34, but also helps to extend the service life of the spring clip 34.

[0169] 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.

[0170] In some possible embodiments, a third limiting portion may be configured on a side of the second connecting rod 332 facing the first connecting rod 331 , and the limiting protrusion 344 is configured to abut against the third limiting portion.

[0171] In some possible embodiments, the third limiting portion may be a limiting curved surface configured on a side of the second connecting rod 332 facing the first connecting rod 331 .

[0172] In some possible embodiments, reference Figure 5-Figure 7 ,as well as Fig.10 The third 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.

[0173] refer to Figure 5 and Figure 6 Before the door body 2 is opened to the set door opening angle, the limiting protrusion 344 and the limiting concave 335 are spaced apart and do not contact each other. As the door opening angle of the door body 2 gradually increases, the space between the limiting protrusion 344 and the limiting concave 335 gradually decreases. Figure 7 , at least part of the limiting protrusion 344 moves into the limiting recess 335 and abuts against the limiting recess 335 .

[0174] When the door opening force of the door body 2 remains unchanged, compared with the implementation method of linear contact between the limiting protrusion 344 and the second connecting rod 332, the abutment and cooperation between the limiting protrusion 344 and the limiting recess 335 can increase the contact area between the limiting protrusion 344 and the limiting recess 335, thereby dispersing the pressure applied by the second connecting rod 332 on the limiting protrusion 344, and increasing the pressure required for the limiting protrusion 344 to deform, that is, increasing the door opening force required for the limiting protrusion 344 to deform, thereby reducing the possibility of the angle β 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.

[0175] In some possible embodiments, the third limiting portion may be a protrusion (not shown in the drawings) configured on a side of the second connecting rod 332 facing the first connecting rod 331 . The protrusion may protrude toward the first connecting rod 331 .

[0176] When the door body 2 is opened to the set door opening angle, the limiting protrusion 344 and the protrusion abut against each other. When the door body 2 still has a tendency to open, the protrusion squeezes the limiting protrusion 344 and causes the limiting protrusion 344 to undergo elastic deformation. Since the limiting protrusion 344 is elastic, the limiting protrusion 344 applies an elastic force from the limiting protrusion 344 to the second connecting rod 332 on the protrusion after the elastic deformation. The elastic force can offset at least part of the pressure from the protrusion on the limiting protrusion 344, that is, buffer at least part of the door opening force, thereby reducing the possibility of the angle β between the second connecting rod 332 and the third connecting rod 333 continuing to decrease, thereby reducing the possibility of the door opening angle of the door body 2 being 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.

[0177] In some possible embodiments, the third limiting portion may be a limiting groove portion (not shown in the drawings) formed by the circumferential side wall of the second end of the second connecting rod 332 and the adjacent position between the side of the second connecting rod 332 facing the first connecting rod 331 .

[0178] When the door body 2 is opened to the set door opening angle, the limiting protrusion 344 and the limiting groove are in contact. When the door body 2 still has a tendency to open, the limiting groove squeezes the limiting protrusion 344 and causes the limiting protrusion 344 to undergo elastic deformation. Since the limiting protrusion 344 is elastic, the limiting protrusion 344 applies an elastic force from the limiting protrusion 344 to the second connecting rod 332 on the limiting groove after the elastic deformation. The elastic force can offset at least part of the pressure from the limiting groove on the limiting protrusion 344, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle β 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.

[0179] In some possible embodiments, the third 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 opening angle of the door body 2 is the set opening angle, the limiting edge can abut against the limiting protrusion 344.

[0180] When the door body 2 is opened to the set door opening angle, the limiting protrusion 344 abuts against the limiting edge. When the door body 2 still has a tendency to open, the limiting edge squeezes the limiting protrusion 344 and causes the limiting protrusion 344 to undergo elastic deformation. Since the limiting protrusion 344 is elastic, the limiting protrusion 344 applies an elastic force from the limiting protrusion 344 to the second connecting rod 332 on the limiting edge after the elastic deformation. The elastic force can offset at least part of the pressure from the limiting edge on the limiting protrusion 344, that is, buffer at least part of the door opening force, thereby reducing the possibility of the angle β between the second connecting rod 332 and the third connecting rod 333 continuing to decrease, thereby reducing the possibility of the door opening angle of the door body 2 being 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.

[0181] In some possible embodiments, there may be multiple limiting protrusions 344. Multiple limiting protrusions 344 may be sequentially arranged along the extension direction of the spring sheet 34. There may be one third limiting portion, and multiple limiting protrusions 344 may cooperate with one third limiting portion at the same time. There may be multiple third limiting portions, and the number of the third limiting portions may correspond to the number of the limiting protrusions 344, and the multiple limiting protrusions 344 respectively cooperate with the corresponding third limiting portions.

[0182] Multiple limiting protrusions 344 can disperse the pressure applied by the second connecting rod 332 on each limiting protrusion 344, thereby increasing the pressure required for the limiting protrusion 344 to deform, that is, increasing the door opening force required to deform the limiting protrusion 344, thereby reducing the possibility of the angle β 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.

[0183] 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 a curved section 337, that is, the circumferential side wall of the second end of the second connecting rod 332 may be configured with a curved section 337. The curved section 337 is closer to the hinge arm 32 than the third limiting portion. The axis corresponding to the curved section 337 is colinear with the axis of the seventh pivot axis 301.

[0184] It should be noted that the curved segment 337 may be in the shape of an arc, and the curved segment 337 may also have a certain deviation relative to the arc, as long as the curved segment 337 as a whole conforms to the law of rotation around the axis of the seventh pivot shaft 301 .

[0185] refer to Figure 5 and Figure 6 , 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 curved segment 337 press against each other, and the curved segment 337 presses the spring piece 34, causing the spring piece 34 to deform along the pressing direction and applying an elastic force F2 to the curved segment 337. The direction of the elastic force F2 is from the spring piece 34 to the curved segment 337, and passes through the axis of the seventh pivot shaft 301. The elastic force F2 increases the pressure between the spring piece 34 and the curved segment 337, thereby increasing the frictional resistance to rotation between the spring piece 34 and the curved 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.

[0186] In addition, the elastic force exerted by the spring piece 34 on the curved segment 337 can offset at least part of the pressure of the curved 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.

[0187] 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 limiting 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 limiting 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 curved section 337 press and match each other. When the door opening angle of the door body 2 is the set door opening angle, the limiting protrusion 344 abuts against the third limiting portion on the second connecting rod 332.

[0188] The curved segment 337 applies pressure on the mating segment 346 toward the fourth connecting rod 334, causing the spring piece 34 to elastically deform toward the fourth connecting rod 334 and applying an elastic force F2 to the curved segment 337. The direction of the elastic force F2 is from the mating segment 346 to the curved segment 337 and passes through the axis of the seventh pivot shaft 301. Therefore, the elastic force F2 increases the pressure between the spring piece 34 and the curved segment 337, thereby increasing the frictional resistance to rotation between the spring piece 34 and the curved segment 337. Further, after the external force of opening the door body 2 is released, it is not easy for the curved segment 337 and the spring piece 34, and between 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 from the accommodating cavity.

[0189] 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 fitting section 346 and the limiting protrusion 344 on the spring piece 34 can increase the extension length of the spring piece 34, thereby increasing the deformation of the spring piece 34 when the fitting section 346 and the curved section 337 are pressed together, thereby increasing the elastic force F2 applied by the spring piece 34 on the curved section 337 and improving the stability of the door body 2 when it is hovering.

[0190] In some possible embodiments, the mating section 346 can be adjacent to the end of the limiting protrusion 344 facing away from the first connecting rod 331, so that the structure of the mating section 346 and the limiting 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 cooperate with the limiting protrusion 344.

[0191] In some possible embodiments, the side of the matching segment 346 facing the second connecting rod 332 may have a matching surface 347. The matching surface 347 is used to press and match with the curved segment 337, and the matching surface 347 is configured to apply an elastic force F2 to the curved segment 337, and the direction of the elastic force F2 passes through the axis of the seventh pivot shaft 301.

[0192] In at least a partial angle range before the door body 2 is opened to the set door opening angle, the matching surface 347 and the curved segment 337 are pressed against each other, and the curved segment 337 applies pressure toward the fourth connecting rod 334 to the matching surface 347, so that the spring piece 34 is elastically deformed toward the fourth connecting rod 334 and an elastic force F2 is applied to the curved segment 337. The direction of the elastic force F2 is from the matching surface 347 to the curved segment 337 and passes through the axis of the seventh pivot shaft 301. Therefore, the elastic force F2 causes the elastic piece 34 and the curved segment 337 to be elastically deformed. The pressure increases, thereby increasing the frictional resistance to rotation between the spring piece 34 and the curved section 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, it is not easy for the curved section 337 and the spring piece 34, and 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 from the storage cavity.

[0193] In some possible implementations of the embodiment of the present application, the mating surface 347 may be a plane to simplify the structure of the spring piece 34 and facilitate the processing and manufacturing of the spring piece 34 .

[0194] In some possible implementations of the embodiment of the present application, the mating surface 347 may be a curved surface. The mating surface 347 may be convex toward the curved segment 337. The mating surface may also be concave in a direction away from the curved segment 337.

[0195] When the lengths of both ends of the mating surface 347 in the extension direction remain unchanged, compared with the implementation method in which the mating surface 347 is a plane, when the mating surface 347 is a curved surface, the extension length of the mating surface 347 increases, thereby increasing the deformation of the spring piece 34 and the elastic force F2 on the curved segment 337.

[0196] In the implementation method in which the mating surface is recessed in the direction away from the curved segment 337, the mating surface 347 can be an arc surface, and the radius corresponding to the mating surface 347 can be equal to the radius corresponding to the curved segment 337, so that when the curved segment 337 is pressed against the mating surface 347, the curved segment 337 and the mating surface 347 fit each other, thereby increasing the contact area between the mating surface 347 and the curved segment 337, thereby increasing the friction force between the mating surface 347 and the curved segment 337, making it easier for the door body 2 to remain hovering after opening.

[0197] It should be noted that the mating surface 347 is an arc surface. The mating surface 347 may be an arc shape, or the mating surface 347 may have a certain deviation relative to the arc shape, as long as there is surface contact between the mating surface 347 and the curved segment 337 .

[0198] In some possible implementations of the present application, reference is made to Figure 5-Figure 7In the process of the door body 2 opening from the closed state to the maximum door opening angle, the curved section 337 can always press and cooperate with the first matching section 346, thereby increasing the possibility of the door body 2 hovering at any door opening angle.

[0199] 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 or equal to 0° and less than the maximum opening angle, the curved 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.

[0200] In some other possible implementations of the embodiment of the present application, the first limiting portion may be a limiting recess, and the third limiting portion may be a limiting convex bump. When the door body 2 is opened to the set door opening angle, the limiting convex bump moves into the limiting recess and abuts against the limiting recess, so as to reduce the possibility that the angle β 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, thereby 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.

[0201] 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.

[0202] 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 (1), a door body (2) and a hinge (3), wherein the door body (2) is rotatably connected to the box body (1) via the hinge (3); The hinge (3) comprises: A fixing seat (31) connected to the box body (1); A hinge arm (32) connected to the door body (2); The transmission assembly (33) comprises a first connecting rod (331), a second connecting rod (332), a third connecting rod (333) and a fourth connecting rod (334), wherein the first end of the first connecting rod (331) and the first end of the second connecting rod (332) are both pivotally connected to the fixing seat (31), the first end of the second connecting rod (332) is further away from the front wall of the box body (1) than the first end of the first connecting rod (331), and the first end of the third connecting rod (333) and the first end of the fourth connecting rod (334) are both pivotally connected to the fixing seat (31). The hinge arm (32) is pivotally connected, the first end of the third link (333) is closer to the side wall of the box body (1) close to the fixing seat (31) than the first end of the fourth link (334), the second end of the first link (331) is pivotally connected to the second end of the fourth link (334), the second end of the third link (333) is pivotally connected to the first link (331), and the second end of the second link (332) is pivotally connected to the third link (333); an elastic telescopic rod (35) arranged on the fourth connecting rod (334), wherein the elastic telescopic rod (35) elastically presses against the hinge arm (32) within at least a partial angle range during the opening process of the door body (2) and realizes a damping effect on the movement of the hinge (3); A spring sheet (34) is arranged on the third connecting rod (333). During the opening process of the door body (2), the spring sheet (34) elastically presses against the second connecting rod (332) within at least a partial angle range and realizes a damping effect on the movement of the hinge (3). The spring sheet (34) is configured with a first limiting portion on the side facing the second connecting rod (332). When the door body (2) is opened to a set door opening angle, the first limiting portion presses against and limits the side facing the first connecting rod (331) with the second connecting rod (332).

2. The refrigerator according to claim 1, characterized in that: The elastic telescopic rod (35) comprises: A first rod (351); The second rod (352) is nested with the first rod (351); A positioning member (353) is arranged at an end of the first rod (351) away from the second rod (352), and the positioning member (353) is arranged on the fourth connecting rod (334); a sliding member (354) disposed at an end of the second rod (352) away from the first rod (351), the sliding member (354) being slidably disposed along the axial direction of the second rod (352) relative to the fourth connecting rod (334), the sliding member (354) being closer to the hinge arm (32) than the positioning member (353); A spring (359) is sleeved outside the first rod (351) and the second rod (352), one end of the spring (359) abuts against the positioning member (353), and the other end abuts against the sliding member (354); The hinge arm (32) squeezes the sliding member (354) and compresses the spring (359) within at least a partial angle range during the opening process of the door body (2); the elastic force of the elastic telescopic rod (35) on the hinge arm (32) achieves a damping effect on the movement of the hinge (3).

3. The refrigerator according to claim 2, characterized in that: A pressing structure (321) is provided on a side of the hinge arm (32) facing away from the door body (2), and the pressing structure (321) extends between the first end of the third connecting rod (333) and the first end of the fourth connecting rod (334); The sliding member (354) has a second limiting portion (358), and the second limiting portion (358) is arranged toward the third connecting rod (333). When the door body (2) is opened to a set door opening angle, the second limiting portion (358) abuts against the pressing structure (321) for limiting.

4. The refrigerator according to claim 3, characterized in that: The pressing structure (321) has a pressing surface (322) on one side of the first end facing the fourth connecting rod (334); When the door body (2) is opened from the first angle to the second angle, the pressing surface (322) presses the sliding member (354) and causes the sliding member (354) to move relative to the first rod (351) toward the spring (359).

5. The refrigerator according to claim 4, characterized in that: The sliding member (354) is configured with a sliding channel (355), and the sliding channel (355) extends along the axial direction of the second rod member (352); The fourth connecting rod (334) rotates relative to the hinge arm (32) around the first pivot axis (307), and the first pivot axis (307) is slidably disposed in the sliding channel (355).

6. The refrigerator according to claim 5, characterized in that: The pressing surface (322) extends obliquely from an end close to the inner side of the door body (2) to an end away from the inner side of the door body (2), and the end of the pressing surface (322) close to the inner side of the door body (2) is closer to the first end of the fourth connecting rod (334) than the end away from the inner side of the door body (2), and the distance between the pressing surface (322) and the axis of the first pivot axis (307) gradually increases from the end close to the inner side of the door body (2) to the end away from the inner side of the door body (2); The sliding member (354) has a first edge (356) on a side facing the third connecting rod (333); During the process of the door body (2) opening from the first angle to the second angle, the end of the first edge (356) facing away from the second rod (352) is pressed against the pressing surface (322), and the position on the pressing surface (322) that cooperates with the first edge (356) moves toward the inner side of the door body (2).

7. The refrigerator according to claim 6, characterized in that: When the door body (2) is opened from the third angle to the fourth angle, the pressing surface (322) and the first edge (356) press against each other, and the force exerted by the pressing surface (322) on the first edge (356) is directed toward the first pivot axis (307).

8. The refrigerator according to claim 5, characterized in that: The sliding member (354) has a second edge (357) on a side facing away from the third connecting rod (333), and the distance between the second edge (357) and the axis of the first pivot shaft (307) gradually decreases from an end close to the third connecting rod (333) to an end away from the third connecting rod (333); When the door body (2) is in a closed state, the second edge (357) is spaced apart from the hinge arm (32).

9. The refrigerator according to claim 2, characterized in that: The positioning member (353) is provided with a through hole (3531); The first connecting rod (331) rotates relative to the fourth connecting rod (334) around the second pivot axis (306), and the second pivot axis (306) is penetrated in the through hole (3531).

10. The refrigerator according to any one of claims 1 to 9, characterized in that: The first limiting portion comprises a limiting protrusion (344), and the limiting protrusion (344) protrudes in a direction away from the fourth connecting rod (334).

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