Refrigerator

Abstract

The utility model provides a refrigerator, belongs to the technical field of household appliances, and aims to solve the technical problem of large external force required when a door body of a related refrigerator is closed. According to the refrigerator, an elastic piece is additionally arranged in a hinge, the elastic piece abuts against and is matched with a flange section within at least a part of angle range in the rotating process of a door body so as to generate elastic deformation to provide assistance for closing of the hinge, the elastic force of the elastic piece to the flange section has two mutually perpendicular component forces, and the direction of one component force passes through the axis of a first pivot shaft while the direction of the other component force passes through the axis of a second pivot shaft. And the direction of the other component force points to the first connecting rod. The component force pointing to the first connecting rod has a force arm enabling the second connecting rod to rotate around the first pivot shaft, so that the component force can push the flange section towards the first connecting rod, the end, deviating from the fixing base, of the second connecting rod rotates towards the front wall of the box body, the door body is driven to rotate towards the front wall of the box body, and door closing assistance is formed. And the external force required for closing the door body is reduced, so that more labor is saved when the door body is closed.

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 the door body from interfering with the cabinet during the opening process and avoid the door body from blocking the storage cavity. However, when the refrigerator door needs to be closed, a large force needs to be manually applied to the door body to make the door body completely closed, which makes it more laborious to close the door body. Utility Model Content

[0004] The embodiment of the present application provides a refrigerator, which can solve the technical problem that a large external force is required when closing the door of related refrigerators.

[0005] 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;

[0006] The hinge includes:

[0007] A fixing seat connected to the box;

[0008] A hinge arm connected to the door body;

[0009] 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 fixed 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 fixed seat than the first end of the fourth connecting rod, the second end of the first connecting rod is pivotally connected to the second end of the fourth connecting rod, the second end of the third connecting rod is pivotally connected to the first connecting rod, the second end of the second connecting rod is pivotally connected to the third connecting rod via a first pivot shaft, a pressing portion is configured on a circumferential side wall of the second end of the second connecting rod, the pressing portion comprises a flange section, and a distance between the flange section and an axis line of the first pivot shaft gradually increases from an end close to the hinge arm to an end close to the first connecting rod;

[0010] The two ends of the spring sheet are connected to the two ends of the third connecting rod. During the closing process of the door body, the spring sheet presses against the flange section within at least a partial angle range to generate elastic deformation to assist the closing of the hinge. The elastic force of the spring sheet on the flange section has two mutually perpendicular components, one of which is directed through the axis of the first pivot shaft, and the other is directed toward the first connecting rod.

[0011] In the refrigerator in the embodiment of the present application, the component force directed to the first connecting rod has a force arm that causes the second connecting rod to rotate around the first pivot axis. Therefore, the component force can push the flange section toward the first connecting rod, causing the end of the second connecting rod that is away from the fixed seat to rotate toward the front wall of the box body, thereby driving the door body to rotate toward the front wall of the box body, forming an assist force for closing the door, reducing the external force required to close the door body, and making it more labor-saving to close the door body.

[0012] In some embodiments of the present application, the flange section is a curved surface, and the flange section protrudes toward the elastic sheet.

[0013] Such an arrangement improves the contact rate between the spring sheet and the flange section at each position, reduces the possibility that the spring sheet and part of the flange section cannot achieve a press fit, and improves the stability of the press fit between the flange section and the spring sheet.

[0014] In some embodiments of the present application, when the opening angle of the door body is within a set angle, the spring sheet and the flange section press and fit against each other.

[0015] This arrangement enables the spring to assist the door in closing when the door opening angle is within the set angle and the external force is released.

[0016] In some embodiments of the present application, the pressing portion includes a curved segment, which is farther away from the hinge arm than the flange segment. The curved segment rotates around the axis of the first pivot axis during the rotation of the door body. The spring sheet presses against the curved segment within at least a partial angle range during the rotation of the door body to generate elastic deformation. The direction of the elastic force of the spring sheet on the curved segment points to the first pivot axis.

[0017] With such arrangement, when the spring sheet and the curved section are pressed against each other, the direction of the elastic force of the spring sheet on the curved section is from the spring sheet to the curved section and to 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 for rotating the second connecting rod 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 accommodating cavity.

[0018] In some embodiments of the present application, the curved segment and the flange segment are adjacent.

[0019] Such an arrangement improves the consistency between the angle range of the spring-assisted door closing and the angle range of the door hovering.

[0020] In some embodiments of the present application, when the opening angle of the door body is between a set angle and a maximum opening angle, the spring sheet and the curved segment press against each other.

[0021] This arrangement allows the door body to easily hover when the opening angle is between the set angle and the maximum opening angle after the external force is released.

[0022] In some embodiments of the present application, the curved segment is in the shape of an arc.

[0023] Such arrangement enables the direction of the elastic force of the spring sheet on the curved segment to point from the spring sheet to the curved segment and to the first pivot axis.

[0024] In some embodiments of the present application, the first end of the spring sheet is wrapped around the pivot axis between the third connecting rod and the first connecting rod, and the second end of the spring sheet is wrapped around the pivot axis between the third connecting rod and the hinge arm; the part of the spring sheet between the first end and the second end is in the shape of a curved plate.

[0025] Such an arrangement increases the unfolded length of the spring sheet, thereby increasing the deformation of the spring sheet, increasing the elastic force applied by the spring sheet to the pressing portion, and making it easier for the door body to hover and automatically close.

[0026] In some embodiments of the present application, the thickness of the spring is between 1.5 mm and 2.5 mm, and the ratio of the thickness of the spring to the unfolded length of the spring is between 0.01 and 0.03.

[0027] In this way, the thickness of the spring sheet is between 1.5 mm and 2.5 mm, which can prevent the spring sheet from fatigue fracture and reduce the external force required when opening and closing the door. The ratio of the thickness of the spring sheet to the unfolded length of the spring sheet is between 0.01 and 0.03, so that the spring sheet can be bent and formed, making it easy to produce.

[0028] In a second aspect, an embodiment of the present application provides a refrigerator, comprising a cabinet, a door and a hinge;

[0029] The hinge includes:

[0030] A fixing seat connected to the box;

[0031] A hinge arm connected to the door body;

[0032] A transmission assembly, comprising a first link, a second link, a third link and a fourth link, wherein the first end of the first link and the first end of the second link are both pivotally connected to a fixed seat, the first end of the second link is farther away from a front wall of a box body than the first end of the first link, the first end of the third link and the first end of the fourth link are both pivotally connected to a hinge arm, the first end of the third link is closer to a side wall of the box body close to the fixed seat than the first end of the fourth link, the second end of the first link is pivotally connected to the second end of the fourth link, the second end of the third link is pivotally connected to the first link, the second end of the second link is pivotally connected to the third link via a first pivot shaft, and a flange section is configured on a circumferential side wall of the second end of the second link;

[0033] The two ends of the spring sheet are connected to the two ends of the third connecting rod. During the closing process of the door body, the spring sheet presses against the flange section within at least a partial angle range to generate elastic deformation to assist the closing of the hinge.

[0034] In the refrigerator of the embodiment of the present application, the spring sheet provides assistance to the hinge closure, so that the external force required to close the door body is reduced, thereby making it easier to close the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 This is a schematic diagram of the structure of the refrigerator according to an embodiment of the present application from a first viewing angle when the door is at the maximum opening angle;

[0037] 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;

[0038] 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;

[0039] Figure 4 This is a schematic diagram of the structure of the refrigerator according to the embodiment of the present application from a second viewing angle when the door is at the maximum opening angle;

[0040] 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;

[0041] Figure 6 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door opening angle is 30°;

[0042] Figure 7 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door opening angle is 60°;

[0043] Figure 8 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door opening angle is 90°;

[0044] Fig. 9 This is a schematic structural diagram of a refrigerator according to an embodiment of the present application when the door is opened to the maximum door opening angle;

[0045] Fig.10 This is a schematic diagram of the structure of the spring piece in the refrigerator according to an embodiment of the present application;

[0046] Fig.11 This is a schematic diagram of the structure of the second connecting rod in the refrigerator according to an embodiment of the present application.

[0047] Description of reference numerals:

[0048] 1-Box;

[0049] 2- portal;

[0050] 3- Hinge;

[0051] 31-fixed seat; 32-hinge arm;

[0052] 33-transmission assembly; 331-first connecting rod;

[0053] 332-second connecting rod; 335-pressing portion;

[0054] 336-curve segment; 337-flange segment;

[0055] 333-third connecting rod; 334-fourth connecting rod;

[0056] 301-first pivot axis; 302-second pivot axis;

[0057] 303 - third pivot axis; 304 - fourth pivot axis;

[0058] 305 - fifth pivot axis; 306 - sixth pivot axis;

[0059] 307-seventh pivot axis; 34-spring;

[0060] 341-first end; 342-second end;

[0061] 4-Cabinet;

[0062] 41- end face; 42- edge. DETAILED DESCRIPTION

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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 .

[0074] 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 .

[0075] 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.

[0076] 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 .

[0077] 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.

[0078] 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 .

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] The third link 333 can rotate relative to the first link 331 around the second pivot axis 302. The hinge arm 32 can rotate relative to the third link 333 around the third pivot axis 303. The third link 333 can rotate relative to the second link 332 around the first pivot axis 301. The second link 332 can rotate relative to the fixing seat 31 around the fourth pivot axis 304. The first link 331 can rotate relative to the fixing seat 31 around the fifth pivot axis 305. The fourth link 334 can rotate relative to the first link 331 around the sixth pivot axis 306. The hinge arm 32 can rotate relative to the fourth link 334 around the seventh pivot axis 307.

[0085] That is, the third link 333 can rotate relative to the first link 331 around the axis of the second pivot shaft 302. The hinge arm 32 can rotate relative to the third link 333 around the axis of the third pivot shaft 303. The third link 333 can rotate relative to the second link 332 around the axis of the first pivot shaft 301. The second link 332 can rotate relative to the fixing seat 31 around the axis of the fourth pivot shaft 304. The first link 331 can rotate relative to the fixing seat 31 around the axis of the fifth pivot shaft 305. The fourth link 334 can rotate relative to the first link 331 around the axis of the sixth pivot shaft 306. The hinge arm 32 can rotate relative to the fourth link 334 around the axis of the seventh pivot shaft 307.

[0086] The first link 331 , the third link 333 , the fourth link 334 and the hinge arm 32 form a quadrilateral, that is, the axis of the second pivot shaft 302 , the axis of the third pivot shaft 303 , the axis of the sixth pivot shaft 306 and the axis of the seventh pivot shaft 307 form a quadrilateral.

[0087] The fixing seat 31 , the first connecting rod 331 , the second connecting rod 332 and the third connecting rod 333 form a quadrilateral, that is, the axis of the second pivot shaft 302 , the axis of the first pivot shaft 301 , the axis of the fourth pivot shaft 304 and the axis of the fifth pivot shaft 305 form a quadrilateral.

[0088] In some possible embodiments, reference Figure 5-Figure 9 When the door body 2 is opened, the hinge 3 changes its position under the restraint of the above two quadrilaterals, so that the hinge arm 32 moves outward along the depth direction Y of the refrigerator and outward along the width direction X of the refrigerator, thereby driving the door body 2 to move outward along the depth direction Y of the refrigerator and outward along the width direction X of the refrigerator.

[0089] It should be noted that, outward along the depth direction Y of the refrigerator refers to the direction from the box body 1 to the fixing seat 31 along the depth direction Y of the refrigerator. Figure 5The positive direction of the direction Y shown in FIG. Outward along the width direction X of the refrigerator refers to the direction from the box body 1 to the cabinet 4 along the width direction X of the refrigerator, for example Figure 5 The positive direction of X is shown in .

[0090] 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.

[0091] In some possible implementations of the present application, reference is made to Figure 5-Figure 9 The hinge 3 may include a spring sheet 34. The spring sheet 34 is elastic and will be elastically deformed and have elastic force under the action of external force.

[0092] In some possible embodiments, the spring 34 may be a leaf spring, which has a simple structure, reliable operation, low cost and easy maintenance.

[0093] The two ends of the elastic sheet 34 in the extension direction can be connected to the two ends of the third connecting rod 333. One side of the elastic sheet 34 faces the second connecting rod 332, and the other side faces the fourth connecting rod 334.

[0094] In some possible embodiments, the elastic sheet 34 may have a first end 341. The first end 341 of the elastic sheet 34 is located at one end of the extension direction of the elastic sheet 34.

[0095] In some possible embodiments, reference Figure 5 and Fig.10 The first end 341 of the spring sheet 34 is bent and wound around the second pivot shaft 302 to reduce the difficulty of assembling the first end 341 of the spring sheet 34 and the second pivot shaft 302 .

[0096] In some possible embodiments, the elastic sheet 34 may have a second end 342. The second end 342 of the elastic sheet 34 and the first end 341 of the elastic sheet 34 are respectively located at two ends of the extension direction of the elastic sheet 34.

[0097] In some possible embodiments, reference Figure 5 and Fig.10 The second end 342 of the spring sheet 34 is bent and arranged around the third pivot shaft 303 to reduce the difficulty of assembling the second end 342 of the spring sheet 34 and the third pivot shaft 303 .

[0098] refer to Figure 5-Figure 10In some possible implementations of the embodiments of the present application, the circumferential side wall of the end of the second connecting rod 332 away from the fixed seat 31 can be constructed with a pressing portion 335, that is, the circumferential side wall of the second end of the second connecting rod 332 can be constructed with a pressing portion 335.

[0099] During the rotation of the door body 2, the spring piece 34 presses against the pressing portion 335 within at least a partial angular range, thereby generating elastic deformation and applying an elastic force F to the curved segment 336. The direction of the elastic force F is from the spring piece 34 to the curved segment 336. The elastic force F increases the pressure between the spring piece 34 and the curved segment 336, thereby increasing the frictional resistance to rotation between the spring piece 34 and the curved segment 336, thereby achieving a certain damping effect on the movement of the hinge 3.

[0100] When the door body 2 is opened to a certain door opening angle and the external door opening force or door closing force applied to the door body 2 is released, the damping effect from the spring 34 can reduce the rotation speed of the door body 2 relative to the box body 1, thereby reducing the angle at which the door body 2 continues to rotate under the influence of inertia, deadweight or manufacturing deviation.

[0101] In some possible implementations of the present application, reference is made to Figure 5-Figure 9 ,as well as Fig.11 The pressing portion 335 may include a curved segment 336 .

[0102] It should be noted that the curved segment 336 may be an arc shape, and the curved segment 336 may also have a certain deviation relative to the arc shape, as long as the curved segment 336 as a whole conforms to the law of rotation around the axis of the first pivot shaft 301 during the rotation of the door body 2.

[0103] In an implementation in which the curved segment 336 is in an arc shape, the axis corresponding to the curved segment 336 may be colinear with the axis of the first pivot shaft 301 .

[0104] refer to Figure 6-Figure 9 During the rotation of the door body 2, when the spring sheet 34 and the curved segment 336 are pressed against each other, the direction of the elastic force F of the curved segment 336 exerted by the spring sheet 34 is directed from the spring sheet 34 to the curved segment 336 and to the first pivot axis 301. Therefore, the force arm from the rotation axis of the first pivot axis 301 to the elastic force F is small, and the elastic force F is not easy to generate a force arm for rotating the second connecting rod 332 around the first pivot axis 301. After the external force applied to the door body 2 is released, the door body 2 can easily be suspended to facilitate taking and placing items from the accommodating cavity.

[0105] 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.

[0106] It should be noted that the direction of the elastic force F pointing to the first pivot axis 301 can be the direction of the elastic force F passing through the axis of the first pivot axis 301, or the direction of the elastic force F can have a certain deviation relative to the axis of the first pivot axis 301, as long as the elastic force F is not easy to generate a force arm that causes the second connecting rod 332 to rotate around the first pivot axis 301.

[0107] In some possible implementations of the present application, the pressing portion 335 may include a flange section 337. The flange section 337 is closer to the second end 342 of the elastic sheet 34 than the curved section 336. The distance between the flange section 337 and the axis of the first pivot shaft 301 gradually increases from the end away from the curved section 336 to the end close to the curved section 336.

[0108] refer to Figure 5 and Figure 6 In the process of closing the door body 2, when the spring sheet 34 is pressed against the flange section 337, the elastic force F of the spring sheet 34 on the flange section 337 has two mutually perpendicular components, one of which is F1 and passes through the axis of the first pivot shaft 301, and the other is F2 and points to the first connecting rod 331.

[0109] The component force F1 pointing to the axis of the first pivot axis 301 does not have a force arm that causes the second connecting rod 332 to rotate around the first pivot axis 301. Therefore, the function of the component force F1 is to increase the pressure between the spring piece 34 and the flange section 337, thereby increasing the friction resistance to rotation between the spring piece 34 and the flange section 337, and further achieving a certain damping effect on the movement of the hinge 3.

[0110] The component force F2 directed toward the first connecting rod 331 has a force arm that causes the second connecting rod 332 to rotate around the first pivot axis 301. Therefore, the component force F2 can push the flange section 337 toward the first connecting rod 331, causing the end of the second connecting rod 332 that is away from the fixed seat 31 to rotate toward the front wall of the box body 1, thereby driving the door body 2 to rotate toward the front wall of the box body 1, forming an assist force for closing the door, reducing the external force required to close the door body 2, and making it more labor-saving to close the door body 2.

[0111] In some possible implementations of the embodiments of the present application, during the closing process of the door body 2, due to the damping effect of the component force F1 on the movement of the hinge 3, the door body 2 can be closed slowly during the closing process, thereby reducing the closing speed of the door body 2, reducing the possibility of the refrigerator shaking or the door body 2 being damaged due to the excessively fast closing speed of the door body 2, and also reducing the possibility of pinching hands due to the excessively fast closing speed of the door body 2.

[0112] refer to Figure 5-Figure 9Since the flange section 337 is closer to the second end 342 of the spring piece 34 than the curved section 336 , during the door opening process, the spring piece 34 first presses against the flange section 337 and then presses against the curved section 336 .

[0113] When the spring piece 34 and the flange section 337 are pressed against each other, the spring piece 34 first cooperates with the end of the flange section 337 away from the curved section 336. As the door opening angle gradually increases, the part of the flange section 337 used for pressing against the spring piece 34 gradually approaches the curved section 336 until it cooperates with the end of the flange section 337 close to the curved section 336.

[0114] Since the distance between the flange section 337 and the axis of the first pivot axis 301 gradually increases from the end away from the curved section 336 to the end close to the curved section 336, the compression degree of the flange section 337 on the spring sheet 34 gradually increases during the process that the portion of the flange section 337 used for pressing against the spring sheet 34 gradually approaches the curved section 336, that is, the spring sheet 34 gradually moves away from the first pivot axis 301 under the pressing action of the flange section 337, so that the deformation amount of the spring sheet 34 gradually increases. Increases, therefore, the elastic force F of the spring clip 34 on the flange section 337 also gradually increases, and the damping effect of the spring clip 34 on the movement of the hinge 3 also gradually increases. In this way, as the door opening angle gradually increases, the component force F2 also increases accordingly, so that the door closing assistance of the spring clip 34 to the door body 2 gradually increases. That is to say, when the spring clip 34 cooperates with the flange section 337, the greater the opening angle of the door body 2, the greater the door closing assistance of the spring clip 34 to the door body 2, thereby reducing the external force required to close the door body 2, making it more labor-saving to close the door body 2.

[0115] In some possible implementations of the embodiment of the present application, the flange segment 337 may be spaced apart from the curved segment 336 .

[0116] In some possible implementations of the embodiments of the present application, when the door body 2 is opened from a closed state to a first set angle, the spring piece 34 and the flange section 337 press against each other, so that when the opening angle of the door body 2 is within the first set angle and the external force is released, the spring piece 34 can help the door body 2 to close.

[0117] The set angle may be greater than 0° and less than or equal to 30°, so that after the door body 2 is released from the external force at a relatively small door opening angle, the spring piece 34 can assist the door body 2 in closing the door.

[0118] In some possible implementations of the embodiments of the present application, when the opening angle of the door body 2 is between the second set angle and the third set angle, the spring piece 34 and the curved segment 336 press against each other to make it easy for the door body 2 to hover when the opening angle is between the second set angle and the third set angle after the external force is released.

[0119] The second setting angle may be greater than the first setting angle. The third setting angle may be less than or equal to the maximum door opening angle.

[0120] Refer to 5- Fig. 9 In some possible implementations of the embodiments of the present application, the flange segment 337 may be adjacent to the curved segment 336 .

[0121] In some possible implementations of the embodiments of the present application, when the door body 2 is opened from a closed state to a set angle, the spring piece 34 and the flange section 337 press against each other, so that when the opening angle of the door body 2 is within the set angle and the external force is released, the spring piece 34 can help the door body 2 to close.

[0122] The setting angle may be greater than 0° and less than or equal to 30°, so that after the door body 2 is released from the external force at a smaller door opening angle, the spring piece 34 can assist the door body 2 in closing.

[0123] In some possible implementations of the embodiments of the present application, when the opening angle of the door body 2 is between the set angle and the maximum opening angle, the spring piece 34 and the curved segment 336 press against each other so that the door body 2 can easily hover when the opening angle is between the set angle and the maximum opening angle after the external force is released.

[0124] In some possible implementations of the embodiment of the present application, the flange section 337 may be a curved surface and may protrude toward the elastic sheet 34 .

[0125] Compared with the implementation method in which the flange section 337 is recessed in the direction away from the spring sheet 34, the flange section 337 protrudes toward the spring sheet 34 to facilitate the press fit between the spring sheet 34 and different positions on the flange section 337, thereby improving the contact rate between the spring sheet 34 and each position of the flange section 337, reducing the possibility that the spring sheet 34 and part of the flange section 337 cannot be press-fitted, and improving the stability of the press fit between the flange section 337 and the spring sheet 34.

[0126] refer to Figure 5-Figure 9 ,as well as Fig.11 In some possible implementations of the embodiments of the present application, the flange section 337 can be an arc surface, so that the distance between the flange section 337 and the axis of the first pivot shaft 301 increases smoothly from the end of the flange section 337 away from the curved section 336 to the end close to the curved section 336. As a result, in the process that the part of the flange section 337 that is used to press against the spring piece 34 gradually approaches the curved section 336, the increase in the damping effect of the spring piece 34 on the door body 2 is reduced, so that the door body 2 is smoother when opening or closing.

[0127] In the implementation method in which the flange segment 337 is an arc surface and the curve segment 336 is an arc shape, the tangent of one end of the flange segment 337 close to the curve segment 336 and the tangent of one end of the curve segment 336 close to the flange segment 337 can be collinear, so that the distance between the end of the flange segment 337 close to the curve segment 336 and the axis of the first pivot shaft 301 is equal to the distance between the axis of the curve segment 336 and the axis of the first pivot shaft 301, and the elastic force of the spring piece 34 on the critical position of the flange segment 337 and the curve segment 336 is consistent with the elastic force on the curve segment 336, so that the spring piece 34 can transition from cooperating with the flange segment 337 to cooperating with the curve segment 336 more smoothly, thereby making the door body 2 smoother when opening or closing.

[0128] In some possible implementations of the embodiment of the present application, the radius corresponding to the flange section 337 may be smaller than the radius corresponding to the curved section 336. Since the flange section 337 and the curved section 336 are structures constructed on the circumferential side wall of the second end of the second connecting rod 332, and the axis of the curved section 336 is collinear with the axis of the first pivot shaft 301, therefore, under the premise that the arc length corresponding to the flange section 337 remains unchanged, compared with the implementation method in which the radius corresponding to the flange section 337 is equal to the radius of the curved section 336, when the radius corresponding to the flange section 337 is smaller than the radius of the curved section 336, the degree of curvature of the flange section 337 increases, and the amount of compression of the elastic sheet 34 by the flange section 337 will increase, thereby increasing the elastic force of the elastic sheet 34 on the flange section 337, and the component force F2 (door closing assistance) of the elastic force also increases, thereby increasing the assistance for closing the door body 2.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] In some possible implementations of the embodiments of the present application, if the ratio of the thickness of the spring piece 34 to the unfolded length of the spring piece 34 is less than or equal to 0.03, the spring piece 34 is easy to produce.

[0134] In some possible implementations of the embodiments of the present application, when the ratio of the thickness of the spring 34 / the unfolded length of the spring 34 is greater than or equal to 0.01 and less than or equal to 0.03, for example, when the thickness of the spring 34 is 2 mm, the unfolded length of the spring 34 is 50 mm, 100 mm or 150 mm. This not only facilitates the production of the spring 34, but also helps to extend the service life of the spring 34.

[0135] 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.

[0136] In some possible implementations of the embodiments of the present application, when the spring clip 34 is in a natural state, the portion of the spring clip 34 between the first end 341 and the second end 342 may be in a flat plate shape to simplify the structure of the spring clip 34 and facilitate processing and manufacturing of the spring clip 34 .

[0137] refer to Figure 5-Figure 10 In some possible implementations of the embodiments of the present application, when the spring sheet 34 is in a natural state, the portion of the spring sheet 34 between the first end 341 and the second end 342 may be in a curved plate shape. When the distance between the first end 341 and the second end 342 of the spring sheet 34 remains unchanged, compared with the implementation in which the spring sheet 34 is in a flat plate shape, when the spring sheet 34 is in a curved plate shape, the unfolded length of the spring sheet 34 can be increased, thereby increasing the deformation of the spring sheet 34, increasing the elastic force applied by the spring sheet 34 to the pressing portion 335, making it easier for the door body 2 to hover, and increasing the assistance provided by the spring sheet 34 to the door body 2 when closing.

[0138] In some possible implementations of the embodiments of the present application, the spring piece 34 can be recessed in a direction away from the pressing portion 335, the second connecting rod 332 can be pivotally connected to the third connecting rod 333 through the first pivot axis 301, and the two ends of the third connecting rod 333 respectively rotate around the second pivot axis 302 and the third pivot axis 303, so that the first pivot axis 301 is located between the second pivot axis 302 and the third pivot axis 303, and the two ends of the spring piece 34 are respectively arranged around the second pivot axis 302 and the third pivot axis 303. When the spring piece 34 is recessed in a direction away from the pressing portion 335, it is convenient to assemble the spring piece 34 in the space defined by the first pivot axis 301, the second pivot axis 302 and the third pivot axis 303.

[0139] In some possible implementations of the embodiments of the present application, the side of the spring piece 34 facing the pressing portion 335 can be an arc surface, and the radius corresponding to the side of the spring piece 34 facing the pressing portion 335 can be greater than the radius corresponding to the curved segment 336. In this way, when the curved segment 336 and the spring piece 34 are pressed together and the opening angle of the door body 2 gradually increases, the curved segment 336 can always be tangent to the side of the spring piece 34 facing the pressing portion 335. In this way, the direction of the elastic force of the spring piece 34 on the curved segment 336 can always pass through the rotation axis of the curved segment 336 (that is, the axis of the first pivot shaft 301), so that the door body 2 can easily achieve hovering after the external force is released.

[0140] 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.

[0141] For ease 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 intended to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: It comprises a box body, a door body and a hinge, wherein the door body is rotatably connected to the box body through the hinge; The hinge comprises: A fixing seat connected to the box; A hinge arm connected to the door body; A transmission assembly, comprising a first link, a second link, a third link and a fourth link, wherein the first end of the first link and the first end of the second link are both pivotally connected to the fixed seat, the first end of the second link is farther away from the front wall of the box body than the first end of the first link, the first end of the third link and the first end of the fourth link are both pivotally connected to the hinge arm, the first end of the third link is closer to the side wall of the box body close to the fixed seat than the first end of the fourth link, the second end of the first link is pivotally connected to the second end of the fourth link, the second end of the third link is pivotally connected to the first link, the second end of the second link is pivotally connected to the third link via a first pivot shaft, and a pressing portion is configured on the circumferential side wall of the second end of the second link, the pressing portion comprises a flange section, and the distance between the flange section and the axis of the first pivot shaft gradually increases from an end close to the hinge arm to an end close to the first link; A spring sheet, both ends of which are connected to the two ends of the third connecting rod. During the closing process of the door body, the spring sheet presses against the flange section within at least a partial angle range to generate elastic deformation to assist the closing of the hinge. The elastic force of the spring sheet on the flange section has two mutually perpendicular components, one of which is directed through the axis of the first pivot shaft, and the other is directed toward the first connecting rod.

2. The refrigerator according to claim 1, characterized in that: The flange section is a curved surface, and the flange section protrudes toward the elastic sheet.

3. The refrigerator according to claim 1, characterized in that: When the opening angle of the door body is within a set angle, the spring sheet and the flange section are pressed and fitted against each other.

4. The refrigerator according to any one of claims 1 to 3, characterized in that: The pressing portion includes a curved segment, which is farther away from the hinge arm than the flange segment. The curved segment rotates around the axis of the first pivot axis during the rotation of the door body. The spring sheet presses against the curved segment within at least a partial angle range during the rotation of the door body to generate elastic deformation. The direction of the elastic force of the spring sheet on the curved segment points to the first pivot axis.

5. The refrigerator according to claim 4, characterized in that: The curved section and the flange section are adjacent.

6. The refrigerator according to claim 4, characterized in that: When the door opening angle of the door body is between a set angle and a maximum door opening angle, the spring sheet and the curved segment press and cooperate with each other.

7. The refrigerator according to claim 4, characterized in that: The curved line segment is in the shape of an arc.

8. The refrigerator according to any one of claims 1 to 3, characterized in that: The first end of the elastic sheet is arranged around the pivot axis between the third connecting rod and the first connecting rod, and the second end of the elastic sheet is arranged around the pivot axis between the third connecting rod and the hinge arm; The portion of the elastic sheet located between the first end and the second end is in a curved plate shape.

9. The refrigerator according to any one of claims 1 to 3, characterized in that: The thickness of the spring sheet is between 1.5 mm and 2.5 mm, and the ratio of the thickness of the spring sheet to the unfolded length of the spring sheet is between 0.01 and 0.

03.

10. A refrigerator, characterized in that: Including box body, door body and hinge; The hinge comprises: A fixing seat connected to the box; A hinge arm connected to the door body; A transmission assembly, comprising a first link, a second link, a third link and a fourth link, wherein the first end of the first link and the first end of the second link are both pivotally connected to the fixing seat, the first end of the second link is farther away from the front wall of the box body than the first end of the first link, the first end of the third link and the first end of the fourth link are both pivotally connected to the hinge arm, the first end of the third link is closer to the side wall of the box body close to the fixing seat than the first end of the fourth link, the second end of the first link is pivotally connected to the second end of the fourth link, the second end of the third link is pivotally connected to the first link, the second end of the second link is pivotally connected to the third link via a first pivot shaft, and the circumferential side wall of the second end of the second link is configured with a flange section; The two ends of the spring sheet are connected to the two ends of the third connecting rod. The spring sheet presses against the flange section within at least a partial angle range during the closing process of the door body to generate elastic deformation to provide assistance for the closing of the hinge.

Images