Refrigerator

Abstract

The utility model provides a refrigerator, belongs to the technical field of household appliances, and aims to solve the technical problem that after a door body of a related refrigerator is opened under the action of external force, the door body is easy to continuously rotate by a larger angle when the external force is relieved. The hinge of the refrigerator comprises a fixing base, a hinge arm, a transmission assembly and an elastic piece, the fixing base is connected to a refrigerator body, the hinge arm is connected to a door body, and the transmission assembly is connected between the fixing base and the hinge arm. The elastic piece is matched with a curve section on a second connecting rod of the transmission assembly in an abutting mode within at least part of angle range in the door body opening process so as to generate elastic deformation to achieve the damping effect on movement of the hinge, and the elastic force of the elastic piece to the curve section points to the curve section from the matching section of the elastic piece and passes through the axis of the first pivot shaft. Therefore, the elastic force is not easy to generate a force arm which enables the second connecting rod to rotate around the first pivot shaft, and after the external force applied to the door body is removed, the door body is easy to suspend, so that articles can be conveniently taken and placed in the accommodating cavity.

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, after the door body is opened to the opening angle required by the user, when the external force applied to the door body for rotating the door body relative to the box body is released, the door body is likely to continue to rotate at a larger angle due to inertia, deadweight or manufacturing deviation, resulting in an increase in the deviation between the final opening angle of the door body and the opening angle required by the user. Utility Model Content

[0005] The embodiment of the present application provides a refrigerator that can solve the technical problem that after the door of the related refrigerator is opened under the action of external force, the door body is likely to continue to rotate at a large angle when the external force is released.

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

[0007] The hinge includes:

[0008] A fixing seat connected to the box;

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

[0010] A transmission assembly, comprising a first link, a second link, a third link and a fourth link, wherein the first 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, the circumferential side wall of the second end of the second link is configured with a curved section, and the curved section rotates around the axis of the first pivot shaft during the opening of the door body;

[0011] The spring piece has its two ends connected to the two ends of the third connecting rod. The spring piece is constructed with a matching section. During the opening process of the door body, the matching section presses against and matches the curved section within at least a partial angle range to generate elastic deformation to achieve a damping effect on the movement of the hinge. The direction of the elastic force of the matching section on the curved section points to the first pivot axis.

[0012] In the refrigerator of the embodiment of the present application, when the door body is opened to a certain door opening angle and the external door opening force or door closing force applied to the door body is released, the damping effect from the spring can reduce the rotation speed of the door body relative to the cabinet, thereby reducing the angle at which the door body continues to rotate under the influence of inertia, dead weight or manufacturing deviation.

[0013] In addition, the direction of the elastic force of the spring sheet on the curved segment is from the matching segment to the curved segment and passes through the axis of the first pivot axis. Therefore, the elastic force is not easy to generate a force arm that causes the second connecting rod to rotate around the first pivot axis. After the external force applied to the door body is released, the door body can easily be suspended to facilitate the removal and placement of items from the storage cavity.

[0014] In some embodiments of the present application, the spring piece has a main body section, and the mating section is adjacent to one end of the main body section close to the first connecting rod; the mating section has a pressing surface on the side facing the curved section, the pressing surface is inclined relative to the main body section toward the curved section, and the pressing surface and the curved section press and fit against each other.

[0015] With such a configuration, the distance between the axis of the matching section and the curved section is reduced compared to the main section. When the squeezing force of the curved section on the spring sheet remains unchanged, the smaller the distance between the matching section and the curved section, the greater the deformation of the matching section. Therefore, the greater the elastic force of the matching section on the curved section, thereby increasing the damping effect of the spring sheet on the hinge movement. When the door body is opened to a certain door opening angle and the door opening or closing external force applied to the door body is released, the enhanced damping effect of the spring sheet can reduce the rotation angle of the door body relative to the box body, making it easier for the door body to hover.

[0016] In some embodiments of the present application, the pressing surface and the curved segment are at least partially in contact with each other.

[0017] Such an arrangement increases the contact area between the pressing surface and the curved section, thereby increasing the friction resistance between the pressing surface and the curved section, improving the damping effect of the spring on the hinge movement, and making it easier for the door body to hover after opening.

[0018] In some embodiments of the present application, the spring piece is structured with a matching protrusion, and the matching protrusion protrudes in a direction away from the fourth connecting rod.

[0019] This arrangement increases the unfolded length of the spring sheet, thereby increasing the deformation of the spring sheet when the mating section and the curved section are pressed together, increasing the elastic force applied by the spring sheet to the curved section, increasing the damping effect of the spring sheet on the hinge movement, and improving the stability of the door body when it is hovering.

[0020] In some embodiments of the present application, the mating protrusion is located between the mating section and the end of the spring sheet close to the first connecting rod; the second connecting rod is configured with an avoidance section on the side facing the first connecting rod, the avoidance section is recessed in a direction away from the first connecting rod, and the avoidance section is configured to avoid the mating protrusion.

[0021] With such arrangement, the avoidance section avoids the moving path of the matching protrusion, reducing the possibility of interference between the matching protrusion and the second connecting rod, so that the door body can be opened normally to the maximum door opening angle.

[0022] In some embodiments of the present application, the mating protrusion abuts against the avoidance section to limit the position when the door body is opened to the maximum opening angle.

[0023] With such arrangement, when the door body is opened to the maximum door opening angle and still has a tendency to open, the avoidance section will squeeze the mating protrusion toward the fourth connecting rod and cause the mating protrusion to undergo elastic deformation. Since the mating protrusion is elastic, the mating protrusion will exert an elastic force directed from the mating protrusion to the avoidance section after the elastic deformation. The elastic force can offset at least part of the pressure from the second connecting rod on the mating protrusion, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle between the second connecting rod and the third connecting rod will continue to decrease, reducing the possibility that the door opening angle will be greater than the maximum door opening angle, and further reducing the pulling between the door body and the hinge arm, and between the box body and the fixing seat caused by the excessively large door opening angle of the door body.

[0024] In some embodiments of the present application, the second end of the third connecting rod rotates around the second pivot axis relative to the first connecting rod, and the first end of the third connecting rod rotates around the third pivot axis relative to the hinge arm; the spring sheet has a first end and a second end, the first end of the spring sheet is arranged around the second pivot axis, and the second end of the spring sheet is arranged around the third pivot axis.

[0025] Such an arrangement reduces the difficulty of assembling the first end of the spring sheet and the second pivot shaft, and reduces the difficulty of assembling the second end of the spring sheet and the third pivot shaft.

[0026] In some embodiments of the present application, the mating section presses against the curved section when the door body is opened from a closed state to a maximum door opening angle.

[0027] This arrangement makes it easy for the door body to hover at any door opening angle.

[0028] 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.

[0029] 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.

[0030] In a second aspect, an embodiment of the present application provides a refrigerator, comprising a cabinet, a door and a hinge;

[0031] The hinge includes:

[0032] A fixing seat connected to the box;

[0033] A hinge arm connected to the door body;

[0034] 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, the circumferential side wall of the second end of the second link is configured with a curved section, and the curved section rotates around the axis of the first pivot shaft during the opening of the door body;

[0035] The two ends of the spring sheet are connected to the two ends of the third connecting rod. When the door is opened, the spring sheet presses against the curved section within at least a partial angle range to generate elastic deformation to damp the movement of the hinge. The direction of the elastic force of the spring sheet on the curved section points to the first pivot axis.

[0036] In the refrigerator of the embodiment of the present application, when the door body is opened to a certain door opening angle and the external door opening force or door closing force applied to the door body is released, the damping effect from the spring can reduce the rotation speed of the door body relative to the cabinet, thereby reducing the angle at which the door body continues to rotate under the influence of inertia, dead weight or manufacturing deviation.

[0037] In addition, the direction of the elastic force of the spring sheet on the curved segment is from the spring sheet to the curved segment and passes through the axis of the first pivot axis. Therefore, the elastic force is not easy to generate a force arm that causes the second connecting rod to rotate around the first pivot axis. After the external force applied to the door body is released, the door body can easily hover to facilitate the removal and placement of items from the storage cavity. 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 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;

[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 from a second viewing angle when the door is at the maximum opening 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 a refrigerator according to an embodiment of the present application when the door opening angle is 30°;

[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 60°;

[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 90°;

[0047] 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;

[0048] Fig.10 This is a schematic diagram of the structure of the spring piece and the second connecting rod in the refrigerator in an embodiment of the present application.

[0049] Description of reference numerals:

[0050] 1-Box;

[0051] 2- portal;

[0052] 3- Hinge;

[0053] 31-fixed seat; 32-hinge arm;

[0054] 33-transmission assembly; 331-first connecting rod;

[0055] 332-second connecting rod; 333-third connecting rod;

[0056] 334- fourth connecting rod; 336- curved section;

[0057] 339-avoidance section; 301-first pivot axis;

[0058] 302 - second pivot axis; 303 - third pivot axis;

[0059] 304 - fourth pivot axis; 305 - fifth pivot axis;

[0060] 306 - sixth pivot axis; 307 - seventh pivot axis;

[0061] 34-shrapnel; 341-first end;

[0062] 342-second end; 343-matching protrusion;

[0063] 344-matching section; 345-pressing surface;

[0064] 347-Ontology segment;

[0065] 4-Cabinet;

[0066] 41-end face; 42-edge. DETAILED DESCRIPTION

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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 .

[0078] 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 .

[0079] 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.

[0080] 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 .

[0081] 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.

[0082] 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 .

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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 are connected and form a quadrilateral.

[0091] 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 are connected and form a quadrilateral.

[0092] 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.

[0093] 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 5 The positive direction of the direction Y shown in FIG. Outward along the width direction X of the refrigerator refers to the direction from the box body 1 to the cabinet 4 along the width direction X of the refrigerator, for example Figure 5 The positive direction of X is shown in .

[0094] 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.

[0095] In some possible implementations of the present application, the circumferential side wall of the second connecting rod 332 at one end away from the fixing seat 31 may be configured with a curved segment 336, that is, the circumferential side wall of the second end of the second connecting rod 332 may be configured with a curved segment 336. The axis corresponding to the curved segment 336 is collinear with the axis of the first pivot shaft 301.

[0096] It should be noted that the curved segment 336 may be in the shape of an arc, and the curved segment 336 may also have a certain deviation relative to the arc, 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 .

[0097] refer to Figure 5-Figure 10The 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.

[0098] In some possible embodiments, the spring 34 may be a leaf spring, which has a simple structure, reliable operation, and easy maintenance.

[0099] The spring piece 34 is disposed on the third connecting rod 333 . One side of the spring piece 34 faces the second connecting rod 332 , and the other side faces the fourth connecting rod 334 .

[0100] refer to Figure 5 and Fig.10 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.

[0101] In some possible embodiments, the first end 341 of the elastic sheet 34 may be disposed around the second pivot shaft 302 to reduce the difficulty of assembling the first end 341 of the elastic sheet 34 and the second pivot shaft 302 .

[0102] 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.

[0103] In some possible embodiments, the second end 342 of the elastic sheet 34 may be disposed around the third pivot shaft 303 to reduce the difficulty of assembling the second end 342 of the elastic sheet 34 and the third pivot shaft 303 .

[0104] In some possible implementations of the embodiments of the present application, the spring piece 34 may be configured with a matching section 344. The matching section 344 is pressed against and matched with the curved section 336 within at least a partial angle range during the opening process of the door body 2, thereby generating elastic deformation and applying an elastic force F to the curved section 336, the direction of which is from the matching section 344 to the curved section 336, and the elastic force F increases the pressure between the matching section 344 and the curved section 336, thereby increasing the frictional resistance to rotation between the spring piece 34 and the curved section 336, thereby achieving a certain damping effect on the movement of the hinge 3.

[0105] 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.

[0106] In addition, the direction of the elastic force F of the spring piece 34 on the curved segment 336 is pointed from the matching segment 344 to the curved segment 336 and passes through the axis of the first pivot axis 301. Therefore, 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. After the external force applied to the door body 2 is released, the door body 2 can easily be suspended to facilitate the removal and placement of items from the storage cavity.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] In some possible implementations of the embodiments of the present application, if the ratio of the thickness of the spring piece 34 to the unfolded length of the spring piece 34 is less than or equal to 0.03, the spring piece 34 is easy to manufacture.

[0113] In some possible implementations of the embodiments of the present application, when the ratio of the thickness of the spring clip 34 to the unfolded length of the spring clip 34 is greater than or equal to 0.01 and less than or equal to 0.03, for example, when the thickness of the spring clip 34 is 2 mm, the unfolded length of the spring clip 34 is 50 mm, 100 mm or 150 mm, this not only facilitates the production of the spring clip 34, but also helps to extend the service life of the spring clip 34.

[0114] 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.

[0115] refer to Figure 5-Figure 9 In some possible implementations of the embodiments of the present application, when the door body 2 is opened from a closed state to a maximum opening angle, the curved segment 336 can always press and cooperate with the matching segment 344 to make it easy for the door body 2 to hover at any opening angle.

[0116] In some other possible implementations of the embodiment of the present application, when the door opening angle of the door body 2 is between the first setting angle and the second setting angle, the curved section 336 and the matching section 344 press and match each other, so that the door body 2 can easily hover when it is between the first setting angle and the second setting angle. The first setting angle is greater than 0°, and the second setting angle is greater than the first setting angle and less than the maximum door opening angle.

[0117] In some other possible implementations of the embodiment of the present application, when the door opening angle of the door body 2 is between the first setting angle and the maximum door opening angle, the curved segment 336 and the matching segment 344 press against each other to make it easy for the door body 2 to hover when the door opening angle is between the first setting angle and the maximum door opening angle. The first setting angle is greater than 0° and less than the maximum door opening angle.

[0118] In some other possible implementations of the embodiment of the present application, when the door body 2 is opened from the closed state to the first set angle, the curved section 336 and the matching section 344 press and match each other, so that the door body 2 can easily hover when the opening angle is within the first set angle. The first set angle is greater than 0° and less than the maximum opening angle.

[0119] refer to Figure 5-Figure 10 In some possible implementations of the embodiment of the present application, the spring piece 34 may include a body section 347. The body section 347 may be adjacent to an end of the matching section 344 that faces away from the first connecting rod 331.

[0120] The side of the matching section 344 facing the curved section 336 may have a pressing surface 345. The pressing surface 345 and the curved section 336 are pressed against each other. The pressing surface 345 may be inclined toward the curved section 336 relative to the body section 347.

[0121] The pressing surface 345 is inclined relative to the main body section 347 toward the curved section 336 , that is, the distance between the pressing surface 345 and the extension direction of one end of the main body section 347 close to the mating section 344 gradually increases from the end close to the main body section 347 to the end away from the main body section 347 .

[0122] Compared with the main body section 347, the distance between the axis of the matching section 344 and the curved section 336 is reduced. When the squeezing force of the curved section 336 on the spring sheet 34 remains unchanged, the smaller the distance between the matching section 344 and the curved section 336, the greater the deformation of the matching section 344. Therefore, the elastic force F of the matching section 344 on the curved section 336 is greater, thereby increasing the damping effect of the spring sheet 34 on the movement of the hinge 3. When the door body 2 is opened to a certain door opening angle and the door opening or closing external force applied to the door body 2 is released, the enhanced damping effect of the spring sheet 34 can reduce the rotation angle of the door body 2 relative to the box body 1, making it easier for the door body 2 to achieve hovering.

[0123] In some possible implementations of the present application, the pressing surface 345 may be a plane. When the pressing surface 345 and the curved segment 336 are pressed and matched, the pressing surface 345 and the curved segment 336 are tangent to each other, so that the direction of the elastic force F of the pressing surface 345 on the curved segment 336 is from the matching segment 344 to the curved segment 336 and passes through the axis of the first pivot shaft 301.

[0124] The pressing surface 345 is a plane, so that the matching section 344 can be formed by simply bending the spring sheet 34 , which facilitates the construction of the matching section 344 and the pressing surface 345 on the spring sheet 34 .

[0125] In some other possible implementations of the present application, the pressing surface 345 may be a curved surface. The pressing surface 345 may be concave toward the side away from the curved segment 336. Alternatively, the pressing surface 345 may be convex toward the curved segment 336. When the pressing surface 345 and the curved segment 336 are pressed and matched, the pressing surface 345 and the curved segment 336 are tangent to each other, so that the direction of the elastic force F of the pressing surface 345 on the curved segment 336 is from the matching segment 344 to the curved segment 336 and passes through the axis of the first pivot shaft 301.

[0126] When the straight length between the two ends of the pressing surface 345 along the extension direction of the spring sheet 34 remains unchanged, compared with the implementation mode in which the pressing surface 345 is a plane, when the pressing surface 345 is a curved surface, the unfolded length of the pressing surface 345 increases, thereby increasing the deformation of the spring sheet 34 and the elastic force F on the curved segment 336, and increasing the damping effect of the spring sheet 34 on the movement of the hinge 3. When the door body is in the open state and the door opening or closing external force applied to the door body 2 is released, the enhanced damping effect of the spring sheet 34 can reduce the rotation angle of the door body 2 relative to the box body 1, making it easier for the door body 2 to achieve hovering.

[0127] refer to Fig.10 In some possible implementations of the present application, the pressing surface 345 may be an arc surface. The axis corresponding to the pressing surface 345 may be located on the side of the spring piece 34 facing the curved segment 336 .

[0128] In some possible implementations of the embodiments of the present application, one end of the pressure surface 345 close to the main body segment 347 can be tangent to the main body segment 347 to make the transition between the main body segment 347 and the pressure surface 345 smoother, thereby reducing the possibility of breakage between the main body segment 347 and the pressure surface 345 due to excessive bending angle.

[0129] In some possible implementations of the embodiments of the present application, the radius corresponding to the pressing surface 345 can be equal to or slightly larger than the radius corresponding to the curved segment 336. In this way, when the curved segment 336 is pressed against the pressing surface 345, the curved segment 336 and the pressing surface 345 can at least partially fit each other, thereby increasing the contact area between the pressing surface 345 and the curved segment 336, thereby increasing the friction resistance between the pressing surface 345 and the curved segment 336, and improving the damping effect of the spring piece 34 on the movement of the hinge 3, so that the door body 2 can be more easily hovered after opening.

[0130] refer to Figure 5-Figure 10 In some possible implementations of the embodiments of the present application, the spring piece 34 may be configured with a matching protrusion 343. The matching protrusion 343 protrudes in a direction away from the fourth connecting rod 334. The side of the matching protrusion 343 away from the fourth connecting rod 334 protrudes in a direction away from the fourth connecting rod 334, and accordingly, the side of the matching protrusion 343 facing the fourth connecting rod 334 may form a depression away from the fourth connecting rod 334.

[0131] The matching protrusion 343 can be formed by bending a portion of the spring sheet 34 toward the second connecting rod 332 , so that the matching protrusion 343 is constructed on the spring sheet 34 .

[0132] In some possible implementations of the embodiment of the present application, the mating protrusion 343 may be located between the mating segment 344 and the first end 341 of the elastic sheet 34 .

[0133] In some possible implementations of the embodiment of the present application, the mating protrusion 343 may be located between the mating segment 344 and the second end 342 of the elastic sheet 34 .

[0134] Under the condition that the length between the first end 341 and the second end 342 of the spring piece 34 remains unchanged, a mating protrusion 343 is constructed on the spring piece 34, which can increase the unfolded length of the spring piece 34, thereby increasing the deformation of the spring piece 34 when the mating section 344 and the curved section 336 are pressed together, increasing the elastic force F applied by the spring piece 34 to the curved section 336, improving the damping effect of the spring piece 34 on the movement of the hinge 3, and improving the stability of the door body 2 when it is hovering.

[0135] In the implementation mode where the mating protrusion 343 is located between the mating section 344 and the first end 341 of the elastic sheet 34, the second connecting rod 332 may be configured with an avoidance section 339. The avoidance section 339 may be recessed in a direction away from the first connecting rod 331. The avoidance section 339 is configured to avoid the mating protrusion 343.

[0136] In some possible implementations of the embodiment of the present application, the avoidance section 339 may be located on a side of the second link 332 facing the first link 331 .

[0137] In some possible implementations of the embodiment of the present application, the avoidance section 339 may be adjacent to an end of the curved section 336 close to the first connecting rod 331 .

[0138] refer to Figure 5-Figure 9 In the quadrilateral surrounded by the fixed seat 31, the first link 331, the second link 332 and the third link 333, as the opening angle of the door body 2 gradually increases, the angle α between the second link 332 and the third link 333 gradually decreases, wherein the angle α between the second link 332 and the third link 333 is the angle formed by connecting the axis of the second pivot shaft 302, the axis of the first pivot shaft 301 and the axis of the fourth pivot shaft 304 in sequence.

[0139] Since the mating protrusion 343 is located between the mating section 344 and the first end 341 of the spring sheet 34, as the angle α between the second connecting rod 332 and the third connecting rod 333 gradually decreases, the distance between the mating protrusion 343 and the second connecting rod 332 also gradually decreases. When the door body 2 is about to open to the maximum door opening angle, the mating protrusion 343 gradually moves to the area surrounded by the avoidance section 339. When the door body 2 is opened to the maximum door opening angle, at least part of the mating protrusion 343 moves to the area surrounded by the avoidance section 339. The avoidance section 339 avoids the moving path of the mating protrusion 343, reducing the possibility of interference between the mating protrusion 343 and the second connecting rod 332, so that the door body 2 can be opened normally to the maximum door opening angle.

[0140] In some possible implementations of the embodiments of the present application, in the process of the door body 2 opening from a closed state to the maximum door opening angle, there is always a gap between the mating protrusion 343 and the avoidance section 339, that is, the mating protrusion 343 and the avoidance section 339 are never in contact, thereby improving the avoidance effect of the avoidance section 339 on the mating protrusion 343.

[0141] In some possible implementations of the embodiments of the present application, the mating protrusion 343 can abut against the avoidance section 339 to limit the position when the door body 2 is opened to the maximum door opening angle.

[0142] After the door body 2 is opened at a certain initial velocity under the action of an external force, the door body 2 will gradually increase the door opening angle under the action of inertia after the external force is released. Before the door body 2 is opened to the maximum door opening angle, the matching protrusion 343 and the avoidance section 339 are spaced apart and do not contact each other. As the door opening angle of the door body 2 gradually increases, the space between the matching protrusion 343 and the avoidance section 339 gradually decreases. Until the door body 2 is opened to the maximum door opening angle, at least part of the matching protrusion 343 moves into the avoidance section 339 and abuts against the avoidance section 339.

[0143] When the door body 2 is opened to the maximum door opening angle and still has a tendency to open, the avoidance section 339 will squeeze the mating protrusion 343 toward the fourth connecting rod 334 and cause the mating protrusion 343 to undergo elastic deformation. Since the mating protrusion 343 is elastic, the mating protrusion 343 will exert an elastic force directed from the mating protrusion 343 to the avoidance section 339 after the elastic deformation. The elastic force can offset at least part of the pressure from the second connecting rod 332 on the mating protrusion 343, that is, buffer at least part of the door opening force, thereby reducing the possibility that the angle α between the second connecting rod 332 and the third connecting rod 333 will continue to decrease, reducing the possibility that the door opening angle of the door body 2 will be greater than the maximum door opening angle, and further reducing the pulling between the door body 2 and the hinge arm 32, and between the box body 1 and the fixing seat 31 caused by the excessively large door opening angle of the door body 2.

[0144] 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.

[0145] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: It comprises a box body, a door body and a hinge, wherein the door body is rotatably connected to the box body through the hinge; The hinge comprises: A fixing seat connected to the box; A hinge arm connected to the door body; A transmission assembly comprises 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 the circumferential side wall of the second end of the second link is configured with a curved section, and the curved section rotates around the axis of the first pivot shaft during the opening of the door body; A spring sheet, whose two ends are connected to the two ends of the third connecting rod, and the spring sheet is constructed with a matching section. The matching section presses against and matches the curved section within at least a partial angle range during the opening process of the door body, thereby generating elastic deformation to achieve a damping effect on the movement of the hinge, and the direction of the elastic force of the matching section on the curved section points to the first pivot axis.

2. The refrigerator according to claim 1, characterized in that: The spring sheet has a body section, and the matching section is adjacent to an end of the body section close to the first connecting rod; The matching section has a pressing surface on one side facing the curved section. The pressing surface is inclined relative to the main body section toward the curved section. The pressing surface and the curved section are pressed and matched with each other.

3. The refrigerator according to claim 2, characterized in that: The pressing surface and the curved segment are at least partially in contact with each other.

4. The refrigerator according to any one of claims 1 to 3, characterized in that: The elastic sheet is configured with a matching protrusion, and the matching protrusion protrudes in a direction away from the fourth connecting rod.

5. The refrigerator according to claim 4, characterized in that: The matching protrusion is located between the matching section and an end of the elastic sheet close to the first connecting rod; A side of the second connecting rod facing the first connecting rod is configured with an avoidance section, the avoidance section is recessed in a direction away from the first connecting rod, and the avoidance section is configured to avoid the matching protrusion.

6. The refrigerator according to claim 5, characterized in that: The matching protrusion abuts against the avoidance section to limit position when the door body is opened to the maximum door opening angle.

7. The refrigerator according to any one of claims 1 to 3, characterized in that: The second end of the third link rotates relative to the first link about the second pivot axis, and the first end of the third link rotates relative to the hinge arm about the third pivot axis; The spring sheet has a first end and a second end. The first end of the spring sheet is wound around the second pivot axis, and the second end of the spring sheet is wound around the third pivot axis.

8. The refrigerator according to any one of claims 1 to 3, characterized in that: The matching section presses against and matches the curved section during the process in which the door body is opened from a closed state to a maximum door opening angle.

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 comprises 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 the circumferential side wall of the second end of the second link is configured with a curved section, and the curved section rotates around the axis of the first pivot shaft during the opening of the door body; A spring sheet, whose two ends are connected to the two ends of the third connecting rod. The spring sheet presses against the curved segment within at least a partial angle range during the opening process of the door body, thereby generating elastic deformation to damp the movement of the hinge. The direction of the elastic force of the spring sheet on the curved segment points to the first pivot axis.

Images