refrigerator

Abstract

The present application provides a refrigerator, which belongs to the technical field of household appliances, and aims to solve the technical problem that it is difficult to limit the door body of the refrigerator after the door body is opened. The refrigerator includes a box body, a door body and a hinge, and the hinge includes a fixed seat, a hinge arm, a transmission assembly and an elastic telescopic rod. The fixed seat is connected to the box body, the hinge arm is connected to the door body, the transmission assembly is connected between the fixed seat and the hinge arm, and the elastic telescopic rod is arranged in the transmission assembly. During the rotation of the door body, elastic deformation is generated within at least a partial angle range and the movement of the hinge is damped to reduce the impact force of the door body when the door body is at the maximum opening angle. When the door body is opened to a set angle, the fixed end of the elastic telescopic rod abuts against the side of the third connecting rod away from the fourth connecting rod to limit the position, thereby reducing the possibility that the door opening angle of the door body is greater than the set angle, thereby 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 opening angle of the door body.

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 fixed seat connected to the box body, the fixed seat is provided with a pressing wheel;

[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 second connecting rod is pivotally connected to the fourth connecting rod, and the second end of the third connecting rod is pivotally connected to the second connecting rod;

[0011] The elastic telescopic rod has a fixed end and a movable end. The fixed end is fixedly connected to the first connecting rod, and the movable end is slidably arranged relative to the first connecting rod. The movable end elastically presses against the pressing wheel 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. When the door body is opened to a set angle, the fixed end abuts against the side of the third connecting rod away from the fourth connecting rod to limit the position.

[0012] In the refrigerator of this embodiment, an elastic telescopic rod is added to the hinge. When the door is opened, the elastic telescopic rod is compressed to produce elastic deformation and damp the movement of the hinge, thereby buffering at least part of the door opening force and reducing the door opening impact force when the door is at the maximum door opening angle. In addition, when the door is opened to a set angle, the fixed end of the elastic telescopic rod abuts against the side of the third connecting rod away from the fourth connecting rod to limit the position, thereby reducing the possibility that the door opening angle is greater than the set angle, thereby reducing the pulling between the door and the hinge arm, and between the box and the fixing seat caused by the excessively large door opening angle.

[0013] In some embodiments of the present application, the second link rotates around the first pivot axis relative to the third link, and the second link rotates around the second pivot axis relative to the fourth link. A limiting notch is constructed on the side of the second link facing away from the first link, and the limiting notch is located between the first pivot axis and the second pivot axis; the third link rotates around the third pivot axis relative to the hinge arm, and the third pivot axis is engaged in the limiting notch when the door body is opened to a set angle.

[0014] This arrangement is used to reduce the possibility of the angle formed by connecting the axes of the second pivot shaft, the first pivot shaft and the third pivot shaft in sequence continuing to decrease, thereby reducing the possibility of the opening angle of the door body being greater than the set angle, so as to limit the door body and reduce the pulling between the door body and the hinge arm, and between the box body and the fixed seat caused by the excessive opening angle of the door body.

[0015] In some embodiments of the present application, a first limiting edge is constructed on the side of the first connecting rod facing the hinge arm, and the first limiting edge is close to the second end of the first connecting rod; the hinge arm is constructed with a second limiting edge, and the second limiting edge is close to the first end of the third connecting rod, and the second limiting edge abuts against the first limiting edge for limiting when the door body is opened to a set angle.

[0016] This arrangement is used to reduce the possibility of the angle formed by connecting the axes of the fifth pivot shaft, the eighth pivot shaft and the third pivot shaft in sequence continuing to decrease, thereby reducing the possibility of the opening angle of the door body being greater than the set angle, so as to limit the door body and reduce the pulling between the door body and the hinge arm, and between the box body and the fixed seat caused by the excessive opening angle of the door body.

[0017] In some embodiments of the present application, the pressure wheel is fixedly connected to the fixed seat via a fixed shaft, and the periphery of the pressure wheel has a first edge, and the distance between the first edge and the axis of the fixed shaft gradually decreases from the end away from the front wall of the box body to the end close to the front wall of the box body; in the process of closing the door body from the second angle to the first angle, the movable end and the first edge press against each other, and move from the end of the first edge away from the front wall of the box body to the end close to the front wall of the box body, and the compression amount of the elastic telescopic rod by the pressure wheel gradually decreases.

[0018] With such arrangement, during the process of the door body closing from the second angle to the first angle, the movable end and the first edge press against each other, and move from the end of the first edge away from the front wall of the box body to the end close to the front wall of the box body, and the elastic force of the elastic telescopic rod is released to assist the door body in closing, thereby reducing the external force required to close the door body, thereby making it easier to close the door body.

[0019] In some embodiments of the present application, the pressure wheel is fixedly connected to the fixed seat via a fixed shaft, and the periphery of the pressure wheel has a second edge. From the end of the second edge close to the front wall of the box body to the end away from the front wall of the box body, the distance between the second edge and the axis of the fixed shaft is equal; in the process of opening the door body from the third angle to the fourth angle, the movable end and the second edge press against each other, and the compression amount of the elastic telescopic rod by the pressure wheel is constant.

[0020] With such arrangement, when the door body is opened from the third angle to the fourth angle, the movable end and the second edge are pressed against each other, the compression amount of the second edge on the spring remains constant, and the elastic force of the spring on the second edge remains unchanged. The elastic telescopic member is not easy to release the elastic force, so the elastic telescopic member is not easy to form an assisting force for closing the door body. The compression amount of the elastic telescopic member is not easy to continue to increase, so the elastic telescopic member is not easy to form an assisting force for opening the door body, so that the door body can easily achieve hovering.

[0021] In some embodiments of the present application, the elastic telescopic rod includes:

[0022] a first rod;

[0023] The second rod is nested with the first rod;

[0024] 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 first connecting rod;

[0025] A movable member is disposed at an end of the second rod member away from the first rod member, and the movable member is closer to the first end of the first connecting rod than the positioning member;

[0026] A roller is arranged on a side of the movable member away from the second rod, and the roller is slidably arranged relative to the first connecting rod along the axis direction of the second rod;

[0027] 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 movable member;

[0028] The pressing wheel presses against the roller 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 spring on the pressing wheel realizes a damping effect on the movement of the hinge.

[0029] With such arrangement, the pressure wheel squeezes the roller (or the movable end of the elastic telescopic rod) within at least a partial angle range during the door opening process. Since the position of the positioning piece (or the fixed end of the elastic telescopic rod) relative to the first connecting rod remains unchanged, the roller is squeezed to compress the spring, and the spring generates elastic force after being compressed. The elastic force is applied to the pressure wheel by the roller to increase the friction resistance of the roller relative to the pressure wheel, and the roller is not easy to rotate relative to the pressure wheel, thereby achieving a certain damping effect on the movement of the hinge, thereby buffering at least part of the door opening force, reducing the door opening impact force at the maximum door opening angle, and reducing the pulling between the door body and the hinge arm, and between the box body and the fixed seat.

[0030] In some embodiments of the present application, the roller includes a wheel body and a sliding shaft, the axis of the wheel body and the axis of the sliding shaft are collinear, the sliding shaft passes through the wheel body, both ends of the sliding shaft are slidably arranged on the first connecting rod, and the sliding direction of the sliding shaft is parallel to the axis of the second rod; a limiting structure is provided on the side of the movable part away from the spring, and part of the roller is clamped in the limiting structure.

[0031] Such arrangement enables the roller to be positioned and connected to the movable part.

[0032] In some embodiments of the present application, the limiting structure includes a first limiting recess and a second limiting recess, a portion of the wheel body is clamped in the first limiting recess, and a portion of the sliding shaft is clamped in the second limiting recess.

[0033] Such arrangement enables the wheel body and the sliding shaft to be positioned and connected to the movable part.

[0034] In some embodiments of the present application, the positioning member and the first connecting rod are pivotally connected via a fourth pivot axis.

[0035] This arrangement makes it difficult for the positioning member to move radially relative to the first connecting rod along the fourth pivot axis.

[0036] In some embodiments of the present application, the first connecting rod rotates around the fifth pivot axis relative to the fourth connecting rod; the elastic telescopic rod also includes a support rod, one end of the support rod is connected to the fourth pivot axis, and the other end of the support rod is connected to the fifth pivot axis.

[0037] With such arrangement, the support rod can be supported between the fourth pivot shaft and the fifth pivot shaft to improve the support strength for the fourth pivot shaft and the positioning member. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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.

[0039] Figure 1 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door is at a set angle from a first viewing angle;

[0040] 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;

[0041] 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;

[0042] Figure 4 This 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 angle from a second viewing angle;

[0043] 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;

[0044] 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;

[0045] 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 between the second angle and the set angle;

[0046] 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 at a set angle;

[0047] Fig. 9 This is a schematic diagram of the structure of an elastic telescopic rod in a refrigerator according to an embodiment of the present application;

[0048] Fig.10 for Fig. 9 Exploded view of the elastic telescopic rod;

[0049] Fig.11 This is a schematic diagram of the structure of a refrigerator in an embodiment of the present application when the hinge is in a closed state;

[0050] Fig.12 This is a schematic structural diagram of a refrigerator in an embodiment of the present application when the opening angle of the hinge is a second angle;

[0051] Fig.13This is a schematic structural diagram of a refrigerator in an embodiment of the present application when the opening angle of the hinge is between the second angle and the set angle;

[0052] Fig.14 It is a structural schematic diagram of the opening angle of the hinge of the refrigerator in the embodiment of the present application when it is at a set angle;

[0053] Fig.15 This is a schematic diagram of the structure of the pressure wheel and the fixed shaft in the refrigerator of the embodiment of the present application.

[0054] Description of reference numerals:

[0055] 1-Box;

[0056] 2- portal;

[0057] 3- Hinge;

[0058] 31-fixed seat;

[0059] 311-pressure wheel; 312-fixed shaft;

[0060] 313-first edge; 314-second edge;

[0061] 32- hinged arm;

[0062] 321-second limiting edge;

[0063] 33- transmission assembly;

[0064] 331 - first connecting rod; 310 - first limiting edge;

[0065] 332-second connecting rod; 309-limiting notch;

[0066] 333-third connecting rod; 334-fourth connecting rod;

[0067] 301-first pivot axis; 302-second pivot axis;

[0068] 303 - third pivot axis; 304 - fourth pivot axis;

[0069] 305 - fifth pivot axis; 306 - sixth pivot axis;

[0070] 307 - seventh pivot axis; 308 - eighth pivot axis;

[0071] 34-elastic telescopic rod;

[0072] 341-first rod; 342-second rod;

[0073] 343-positioning member; 344-movable member;

[0074] 345-roller; 346-spring;

[0075] 347-wheel body; 348-sliding shaft;

[0076] 349-first limiting recess; 340-second limiting recess;

[0077] 35-fixed end; 36-movable end;

[0078] 37- support rod;

[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. 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.

[0082] In view of this, the refrigerator in the embodiment of the present application adds an elastic telescopic rod in the hinge. When the door body is opened, the elastic telescopic rod is compressed 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, when the door body is opened to a set angle, the fixed end of the elastic telescopic rod abuts and limits the side of the third connecting rod away from the fourth connecting rod, thereby reducing the possibility of the door opening angle being greater than the set 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 excessive 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 2and 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 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 fourth connecting rod 334, and the projection of the second end of the second connecting rod 332 on the fourth connecting rod 334 is located between the first end of the fourth connecting rod 334 and the second end of the fourth connecting rod 334.

[0101] 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 second link 332, and the projection of the second end of the third link 333 on the second link 332 is located between the first end of the second link 332 and the second end of the second link 332.

[0102] The fixing base 31 , the first connecting rod 331 , the second connecting rod 332 and the fourth connecting rod 334 form a quadrilateral.

[0103] The second link 332 , the third link 333 , the fourth link 334 and the hinge arm 32 form a quadrilateral.

[0104] The third link 333 can rotate relative to the second link 332 around the axis of the first pivot shaft 301 .

[0105] The fourth link 334 can rotate relative to the second link 332 around the axis of the second pivot shaft 302 .

[0106] The third link 333 can rotate relative to the hinge arm 32 around the axis of the third pivot shaft 303 .

[0107] The first link 331 can rotate relative to the fourth link 334 around the axis of the fifth pivot shaft 305 .

[0108] The first connecting rod 331 can rotate relative to the fixing base 31 around the axis of the sixth pivot shaft 306 .

[0109] The second connecting rod 332 can rotate relative to the fixing base 31 around the axis of the seventh pivot shaft 307 .

[0110] The fourth link 334 can rotate relative to the hinge arm 32 around the axis of the eighth pivot shaft 308 .

[0111] The fixing seat 31, the first connecting rod 331, the second connecting rod 332 and the fourth connecting rod 334 form a quadrilateral, that is, the axis of the second pivot shaft 302, the axis of the fifth pivot shaft 305, the axis of the sixth pivot shaft 306 and the axis of the seventh pivot shaft 307 are connected to form a quadrilateral.

[0112] The second link 332, the third link 333, the fourth link 334 and the hinge arm 32 form a quadrilateral, that is, the axis of the first pivot axis 301, the axis of the second pivot axis 302, the axis of the third pivot axis 303 and the axis of the eighth pivot axis 308 are connected to form a quadrilateral.

[0113] In some possible embodiments, reference Figure 5-Figure 8 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.

[0114] 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.

[0115] refer to Figure 5-Figure 10 In some possible implementations of the embodiments of the present application, the hinge 3 may include an elastic telescopic rod 34 , and the elastic telescopic rod 34 is arranged on the first connecting rod 331 .

[0116] In some possible implementations of the embodiment of the present application, the elastic telescopic rod 34 may include a first rod member 341 , a second rod member 342 , a positioning member 343 , a movable member 344 , a roller 345 and a spring 346 .

[0117] The positioning member 343 is connected to one end of the first rod 341 in the extending direction.

[0118] The positioning member 343 is disposed on the first connecting rod 331 . The positioning member 343 constitutes the fixed end 35 of the elastic telescopic rod 34 .

[0119] In some possible implementations of the present application, the positioning member 343 may be block-shaped. The positioning member 343 may be provided with a through hole. The positioning member 343 and the first connecting rod 331 may be pivotally connected via the fourth pivot axis 304 passing through the through hole, so that the positioning member 343 is not easily moved relative to the first connecting rod 331 along the radial direction of the fourth pivot axis 304.

[0120] In some possible implementations of the embodiments of the present application, the elastic telescopic rod 34 may further include a support rod 37, and the support rod 37 may be supported between the fourth pivot axis 304 and the fifth pivot axis 305 to improve the support strength of the fourth pivot axis 304 and the positioning member 343.

[0121] The movable member 344 is connected to one end of the second rod 342 in the extending direction.

[0122] The second rod 342 and the first rod 341 are nested, and the second rod 342 can be sleeved outside the first rod 341 , or the first rod 341 can be sleeved outside the second rod 342 .

[0123] The spring 346 is sleeved outside the first rod 341 and the second rod 342. Two ends of the spring 346 are respectively in contact with the positioning member 343 and the movable member 344.

[0124] When the spring 346 is at its original length, a portion of the first rod 341 and a portion of the second rod 342 are nested.

[0125] When the spring 346 is compressed, the overlap between the first rod 341 and the second rod 342 increases, and the length of the entire structure consisting of the first rod 341 and the second rod 342 decreases.

[0126] The movable member 344 is closer to the first end of the first connecting rod 331 than the positioning member 343 .

[0127] The roller 345 may be disposed on a side of the movable member 344 away from the second rod 342. The roller 345 may roll relative to the movable member 344 with its own axis as the center.

[0128] In some possible implementations of the present application, the roller 345 may include a wheel body 347 and a sliding shaft 348, the axis of the wheel body 347 and the axis of the sliding shaft 348 may be colinearly arranged, and the sliding shaft 348 may pass through the wheel body 347. The sliding shaft 348 may rotate with the wheel body 347. Alternatively, the sliding shaft 348 may rotate relative to the wheel body 347.

[0129] In some possible implementations of the embodiments of the present application, a limiting structure may be provided on the side of the movable member 344 facing away from the spring 346 , and part of the roller 345 is clamped in the limiting structure to position the roller 345 and connect it to the movable member 344 .

[0130] In some possible implementations of the embodiments of the present application, the limiting structure may include a first limiting recess 349 , and a portion of the wheel body 347 is clamped in the first limiting recess 349 to position the wheel body 347 and connect it to the movable part 344 .

[0131] The limiting structure may include a second limiting recess 340. There may be two second limiting recesses 340, and the two second limiting recesses 340 may be arranged on both sides of the first limiting recess 349 along the axis direction of the sliding shaft 348. Part of the sliding shaft 348 is clamped in the second limiting recess 340 to position the sliding shaft 348 and connect it to the movable member 344.

[0132] In some possible implementations of the present application, the limiting structure may include a limiting groove, and a portion of the wheel body 347 may be rotatably disposed in the limiting groove. Both ends of the sliding shaft 348 may be passed through the movable member 344 to position and connect the roller 345 to the movable member 344, and a portion of the roller 345 is clamped in the limiting groove.

[0133] In some possible implementations of the embodiment of the present application, the roller 345 is slidably disposed on the first connecting rod 331. The roller 345 constitutes the movable end 36 of the elastic telescopic rod 34.

[0134] In some possible implementations of the present application, the first connecting rod 331 may be configured with a slide groove, and the extension direction of the slide groove may be parallel to the axis of the second rod 342. The roller 345 may include a wheel body 347 and a sliding shaft 348. The axis of the roller 345 may be colinear with the axis of the sliding shaft 348. Both ends of the sliding shaft 348 may be slidably disposed in the slide groove of the first connecting rod 331, so that the roller 345 can slide relative to the first connecting rod 331 along the axis direction of the second rod 342.

[0135] The pressure wheel 311 squeezes the roller 345 (or the movable end 36 of the elastic telescopic rod 34) within at least a partial angle range during the opening process of the door body 2. Since the position of the positioning piece 343 (or the fixed end 35 of the elastic telescopic rod 34) relative to the first connecting rod 331 remains unchanged, the roller 345 compresses the spring 346 after being squeezed. The spring 346 generates an elastic force F after being compressed. The elastic force F is applied to the pressure wheel 311 by the roller 345 to increase the friction resistance of the roller 345 relative to the pressure wheel 311, and the roller 345 is not easy to rotate relative to the pressure wheel 311, thereby achieving a certain damping effect on the movement of the hinge 3, thereby buffering at least part of the door opening force, reducing the door opening impact force of the door body at the maximum door opening angle, and reducing the pulling between the door body and the hinge arm, and between the box body and the fixed seat.

[0136] refer to Figure 5-Figure 8 In the quadrilateral surrounded by the second link 332, 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 γ formed by connecting the axis of the first pivot axis 301, the axis of the third pivot axis 303 and the axis of the eighth pivot axis 308 in sequence gradually increases.

[0137] In some possible implementations of the embodiments of the present application, the fixed end 35 (or the positioning member 343) abuts against the side of the third connecting rod 333 that is away from the fourth connecting rod 334 to limit the position when the door body 2 is opened to a set angle, so as to reduce the possibility of the angle γ continuing to decrease, thereby reducing the possibility of the opening angle of the door body 2 being greater than the set angle, so as to limit the door body 2 and reduce the pulling between the door body and the hinge arm, and between the box body and the fixed seat caused by the excessive opening angle of the door body.

[0138] refer to Figure 5-Figure 8 In the quadrilateral surrounded by the second link 332, 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 shaft 302, the axis of the first pivot shaft 301 and the axis of the third pivot shaft 303 in sequence gradually decreases.

[0139] In some possible implementations of the present application, reference is made to Figure 5-Figure 8 A limiting notch 309 may be constructed on a side of the second connecting rod 332 facing away from the first connecting rod 331 , and the limiting notch 309 is located between the first pivot shaft 301 and the second pivot shaft 302 .

[0140] The third pivot shaft 303 is engaged in the limiting notch 309 when the door body 2 is opened to a set 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 angle, so as to limit the door body 2 and reduce the pulling between the door body and the hinge arm, and between the box body and the fixed seat caused by the excessive opening angle of the door body.

[0141] refer to Figure 11-Figure 14 As the opening angle of the door body 2 gradually increases, the angle β formed by sequentially connecting the axis of the fifth pivot axis 305, the axis of the eighth pivot axis 308 and the axis of the third pivot axis 303 gradually decreases.

[0142] In some possible implementations of the present application, reference is made to Figure 11-Figure 14 The first link 331 may be configured with a first limiting edge 310 on one side thereof facing the hinge arm 32 . The first limiting edge 310 is close to the second end of the first link 331 .

[0143] The hinge arm 32 is configured with a second limiting edge 321. The second limiting edge 321 is close to the first end of the third connecting rod 333. When the door body 2 is opened to a set angle, the second limiting edge 321 abuts against the first limiting edge 310 to limit the position, so as to reduce the possibility that the angle β continues to decrease, thereby reducing the possibility that the opening angle of the door body 2 is greater than the set angle, so as to limit the door body 2 and reduce the pulling between the door body and the hinge arm, and between the box body and the fixing seat caused by the excessively large opening angle of the door body.

[0144] In some possible implementations of the present application, reference is made to Figure 5 and Fig.15 The pressing wheel 311 can be fixedly connected to the fixing seat 31 through the fixing shaft 312. The pressing wheel 311 and the fixing seat 31 are fixedly connected, which means that during the rotation of the door body 2, the pressing wheel 311 and the fixing seat 31 do not change their positions. Since the fixing seat 31 is fixedly connected to the front wall of the box body 1, the position of the fixing seat 31 does not change when the door body 2 rotates. The pressing wheel 311 and the fixing seat are fixedly connected, and the position of the pressing wheel 311 does not change during the rotation of the door body 2.

[0145] The periphery of the pressing wheel 311 may have a first edge 313 , and the distance between the first edge 313 and the axis of the fixed shaft 312 gradually decreases from an end away from the front wall of the box body 1 to an end close to the front wall of the box body 1 .

[0146] When the door 2 is closed from the second angle to the first angle, the roller 345 and the first edge 313 are pressed against each other and move from the end of the first edge 313 away from the front wall of the box body 1 to the end close to the front wall of the box body 1 .

[0147] Since the distance between the first edge 313 and the axis of the fixed shaft 312 gradually decreases from the end away from the front wall of the box body 1 to the end close to the front wall of the box body 1, during the process of closing the door body 2 from the second angle to the first angle, the compression of the spring 346 by the pressure wheel 311 gradually decreases, and the elastic force of the spring 346 is gradually released, and the elastic potential energy of the spring 346 is converted into kinetic energy, so that the spring 346 returns to the state of the spring 346 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 346 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 easier to close the door body 2.

[0148] In some possible implementations of the present application, the fixed shaft 312 may be the sixth pivot shaft 306, and the sixth pivot shaft 306 is fixedly connected to the fixing seat 31, and the two do not rotate relative to each other during the rotation of the door body 2. The pressing wheel 311 is fixedly connected to the fixing seat 31 via the sixth pivot shaft 306, which can simplify the structure of the hinge 3.

[0149] In some possible implementations of the present application, the pressing wheel 311 can be fixedly connected to the fixing seat 31 through the fixing shaft 312, and the periphery of the pressing wheel 311 has a second edge 314, and the distance between the second edge 314 and the axis of the fixing shaft 312 is equal from the end of the second edge 314 close to the front wall of the box body 1 to the end away from the front wall of the box body 1. Exemplarily, the second edge 314 can be an arc surface, or the second edge 314 can be an arc surface with a pit, as long as the distance between each position where the second edge 314 cooperates with the roller 345 and the fixing shaft 312 is equal.

[0150] When the door body 2 is opened from the third angle to the fourth angle, the movable end 36 (or the roller 345) and the second edge 314 are pressed against each other. The fourth angle is greater than the third angle. The fourth angle can be a set angle. The third angle can be greater than or equal to the second angle.

[0151] Since the distances between the positions where the second edge 314 and the roller 345 match and the fixed shaft 312 are equal, the compression amount of the spring 346 by the second edge 314 remains constant, and the elastic force of the spring 346 on the second edge 314 remains unchanged. The spring 346 is not easy to release its elastic force, so the spring 346 is not easy to form an assisting force for closing the door body 2. The compression amount of the spring 346 is not easy to continue to increase, so the spring 346 is not easy to form an assisting force for opening the door body 2. The compression amount of the spring 346 by the second edge 314 reaches the maximum and remains constant, so that the friction resistance of the roller 345 relative to the second edge 314 reaches the maximum, and the damping effect of the elastic telescopic rod 34 on the hinge 3 is also the maximum, so that the door body 2 can easily achieve hovering.

[0152] In some possible implementations of the present application, the second edge 314 may be adjacent to an end of the first edge 313 facing away from the front wall of the box body 1, so that the third angle is equal to the second angle, the first angle may be equal to 0°, and the fourth angle may be a set angle.

[0153] In this way, when the door body 2 is closed from the second angle, the elastic force of the spring 346 is released to assist the door body 2 in closing, thereby reducing the external force required to close the door body 2, thereby making it easier to close the door body 2.

[0154] When the door body 2 opens from the second angle to the set angle, the compression of the spring 346 by the second edge 314 reaches a maximum and remains constant. In this way, the friction resistance of the roller 345 relative to the second edge 314 reaches a maximum, and the damping effect of the elastic telescopic rod 34 on the hinge 3 is also maximum, making it easy for the door body 2 to hover.

[0155] 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.

[0156] 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 fixed seat (31) connected to the box body (1), the fixed seat (31) being provided with a pressing wheel (311); 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 second link (332) is pivotally connected to the fourth link (334), and the second end of the third link (333) is pivotally connected to the second link (332); An elastic telescopic rod (34) comprises a fixed end (35) and a movable end (36), wherein the fixed end (35) is fixedly connected to the first connecting rod (331), and the movable end (36) is slidably arranged relative to the first connecting rod (331). During the opening process of the door body (2), the movable end (36) elastically presses against the pressing wheel (311) within at least a partial angle range and realizes a damping effect on the movement of the hinge (3). When the door body (2) is opened to a set angle, the fixed end (35) abuts against a side of the third connecting rod (333) away from the fourth connecting rod (334) to limit the position.

2. The refrigerator according to claim 1, characterized in that: The second connecting rod (332) rotates relative to the third connecting rod (333) around the first pivot axis (301), the second connecting rod (332) rotates relative to the fourth connecting rod (334) around the second pivot axis (302), a limiting notch (309) is configured on a side of the second connecting rod (332) away from the first connecting rod (331), and the limiting notch (309) is located between the first pivot axis (301) and the second pivot axis (302); The third connecting rod (333) rotates around the third pivot axis (303) relative to the hinge arm (32), and the third pivot axis (303) is engaged in the limiting notch (309) when the door body (2) is opened to a set angle.

3. The refrigerator according to claim 1, characterized in that: A first limiting edge (310) is configured on one side of the first connecting rod (331) facing the hinge arm (32), and the first limiting edge (310) is close to the second end of the first connecting rod (331); The hinge arm (32) is constructed with a second limiting edge (321), the second limiting edge (321) is close to the first end of the third connecting rod (333), and the second limiting edge (321) abuts against the first limiting edge (310) to limit when the door body (2) is opened to a set angle.

4. The refrigerator according to claim 1, characterized in that: The pressing wheel (311) is fixedly connected to the fixing seat (31) via a fixing shaft (312); the periphery of the pressing wheel (311) has a first edge (313); the distance between the first edge (313) and the axis of the fixing shaft (312) gradually decreases from an end away from the front wall of the box body (1) to an end close to the front wall of the box body (1); During the process of the door body (2) closing from the second angle to the first angle, the movable end (36) and the first edge (313) are pressed against each other, and the first edge (313) moves from the end away from the front wall of the box body (1) to the end close to the front wall of the box body (1), and the compression amount of the elastic telescopic rod (34) by the pressing wheel (311) gradually decreases.

5. The refrigerator according to claim 1, characterized in that: The pressing wheel (311) is fixedly connected to the fixing seat (31) via a fixing shaft (312); the periphery of the pressing wheel (311) has a second edge (314); from an end of the second edge (314) close to the front wall of the box body (1) to an end of the second edge (314) away from the front wall of the box body (1), the distance between the second edge (314) and the axis of the fixing shaft (312) is equal; During the process of the door body (2) opening from the third angle to the fourth angle, the movable end (36) and the second edge (314) press against each other, and the compression amount of the elastic telescopic rod (34) by the pressing wheel (311) is constant.

6. The refrigerator according to any one of claims 1 to 5, characterized in that: The elastic telescopic rod (34) comprises: A first rod (341); The second rod (342) is nested with the first rod (341); A positioning member (343) is arranged at one end of the first rod (341) away from the second rod (342), and the positioning member (343) is arranged on the first connecting rod (331); A movable member (344) is disposed at an end of the second rod (342) away from the first rod (341), and the movable member (344) is closer to the first end of the first connecting rod (331) than the positioning member (343); A roller (345) is arranged on a side of the movable member (344) away from the second rod member (342), and the roller (345) is slidably arranged along the axial direction of the second rod member (342) relative to the first connecting rod (331); A spring (346) is sleeved outside the first rod (341) and the second rod (342), one end of the spring (346) abuts against the positioning member (343), and the other end abuts against the movable member (344); The pressing wheel (311) presses against the roller (345) and compresses the spring (346) within at least a partial angle range during the opening process of the door body (2); the elastic force of the spring (346) on the pressing wheel (311) achieves a damping effect on the movement of the hinge (3).

7. The refrigerator according to claim 6, characterized in that: The roller (345) comprises a wheel body (347) and a sliding shaft (348), the axis of the wheel body (347) and the axis of the sliding shaft (348) are colinear, the sliding shaft (348) passes through the wheel body (347), both ends of the sliding shaft (348) are slidably arranged on the first connecting rod (331), and the sliding direction of the sliding shaft (348) is parallel to the axis of the second rod (342); A limiting structure is provided on a side of the movable member (344) facing away from the spring (346), and a portion of the roller (345) is clamped in the limiting structure.

8. The refrigerator according to claim 7, characterized in that: The limiting structure comprises a first limiting recess (349) and a second limiting recess (340), a portion of the wheel body (347) is clamped in the first limiting recess (349), and a portion of the sliding shaft (348) is clamped in the second limiting recess (340).

9. The refrigerator according to claim 6, characterized in that: The positioning member (343) and the first connecting rod (331) are pivotally connected via a fourth pivot axis (304).

10. The refrigerator according to claim 9, characterized in that: The first connecting rod (331) rotates relative to the fourth connecting rod (334) around a fifth pivot axis (305); The elastic telescopic rod (34) further comprises a support rod (37), one end of the support rod (37) being connected to the fourth pivot shaft (304), and the other end of the support rod (37) being connected to the fifth pivot shaft (305).

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