Hovering structure and refrigerator

Abstract

The application provides a hovering structure and a refrigerator. The hovering structure comprises a hinge assembly and a connecting part pivotally connected with the hinge assembly. The hinge assembly comprises a hinge shaft, a hinge shaft sleeve, a roller and a sliding ring. The sliding ring is sleeved on the hinge shaft sleeve and fixedly connected with the hinge shaft sleeve. The hinge shaft sleeve is sleeved on the hinge shaft and rotationally connected with the hinge shaft. The hinge shaft sleeve is provided with a limiting gap. The roller is rotationally arranged in the limiting gap. The outer surface of the roller is respectively in abutment with the surface of the limiting gap and the inner surface of the sliding ring. The cabinet and the door body of the refrigerator are pivotally connected through the hovering structure. When the door body is opened around the hinge shaft, the consumption of force during opening of the door is reduced through the rolling movement mode formed between the door body and the hinge shaft. When the door body is closed around the hinge shaft, the roller cannot roll due to the constraint of the force because of the movable structure between the roller and the hinge shaft. The movement mode between the door body and the hinge shaft is changed into dry friction mode, the required amount of force during closing of the door is increased, and thus the automatic closing of the door body is hindered.

Description

Technical Field

[0001] This application relates to the field of refrigerator technology, and more particularly to a hovering structure and a refrigerator. Background Technology

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature. It consists of a cabinet and a door, which are connected by a hinge. The hinge is fixed to the cabinet, and the door rotates clockwise or counterclockwise around the hinge axis, allowing the door to open and close relative to the cabinet. When closed, the door uses a self-locking mechanism to seal the cabinet. However, due to limitations in refrigerator manufacturing processes, when the door is opened, the shift in its center of gravity can cause the door to move towards the cabinet, resulting in insufficient opening angle or the door closing automatically, thus reducing the user experience. Summary of the Invention

[0003] This application provides a hovering structure and a refrigerator to solve the problem of the door automatically closing due to a shift in the center of gravity.

[0004] In a first aspect, this application provides a hovering structure, including a hinge assembly and a connecting portion pivotally connected to the hinge assembly. The hinge assembly includes a hinge shaft, a hinge bushing, a sliding ring, and a roller; the connecting portion is pivotally connected to the outer surface of the sliding ring; the sliding ring is sleeved on the hinge bushing and fixedly connected to it; the hinge bushing is sleeved on the hinge shaft and rotatably connected to it; the hinge bushing has a limiting notch, and the roller is rotatably disposed within the limiting notch, with the outer surface of the roller abutting against the surface of the limiting notch and the inner surface of the sliding ring, respectively.

[0005] In one implementation, the limiting notch includes a first abutting surface and a second abutting surface, and the outer surface of the roller abuts against the first abutting surface and the second abutting surface, respectively.

[0006] In one implementation, the first abutting surface and the second abutting surface are perpendicular.

[0007] In one implementation, a plurality of the limiting notches are spaced apart on the hinge bushing.

[0008] In one implementation, the hinge bushing has a protrusion that extends into the sliding ring.

[0009] In one implementation, the axial height of the hinge shaft is equal to the axial height of the hinge bushing.

[0010] In one implementation, the axial height of the hinge shaft is equal to the axial height of the roller.

[0011] Secondly, this application provides a refrigerator, comprising: a cabinet, a door, and the aforementioned hovering structure; the hinge assembly of the hovering structure extends into the door, and the sliding ring of the hovering structure is fixedly connected to the door; the connecting portion of the hovering structure is connected to the cabinet.

[0012] As can be seen from the above technical solution, this application provides a hovering structure and a refrigerator. The hovering structure includes a hinge assembly and a connecting part pivotally connected to the hinge assembly. The hinge assembly includes a hinge shaft, a hinge bushing, a roller, and a sliding ring. The sliding ring is fitted onto the hinge bushing and fixedly connected to it. The hinge bushing is fitted onto the hinge shaft and rotatably connected to it. The hinge bushing has a limiting notch, and the roller is rotatably positioned within the limiting notch. The outer surface of the roller abuts against the surface of the limiting notch and the inner surface of the sliding ring, respectively. The refrigerator body and door are pivotally connected via the hovering structure. When the door is opened around the hinge shaft, a rolling motion is formed between the door and the hinge shaft, reducing the force consumed when opening the door. When the door is closed around the hinge shaft, due to the restriction of the movable structure between the roller and the hinge shaft, the roller is constrained and cannot roll, causing the motion between the door and the hinge shaft to become dry friction, increasing the force required to close the door, thus hindering the automatic closing of the door. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of a refrigerator provided in an embodiment of this application;

[0015] Figure 2 A schematic diagram of the hovering structure provided in the embodiments of this application;

[0016] Figure 3 A schematic diagram of the limiting notch provided in an embodiment of this application;

[0017] Figure 4 A schematic diagram of the door provided in the embodiments of this application;

[0018] Figure 5 This is a schematic diagram of the hovering structure and door provided in the embodiments of this application;

[0019] Figure 6 A schematic diagram of the forces acting on the rollers when the door is subjected to an opening force, provided for an embodiment of this application;

[0020] Figure 7The diagram provided for this application illustrates the forces acting on the rollers when the door is subjected to a closing force.

[0021] Illustration:

[0022] 100-Hinge assembly, 110-Hinge shaft, 120-Hinge bushing, 121-Limiting notch, 122-First abutting surface, 123-Second abutting surface, 124-Protrusion, 130-Roller, 140-Slip ring, 200-Connecting part, 300-Refrigerator, 310-Box body, 320-Door body, 321-Door trim. Detailed Implementation

[0023] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims.

[0024] like Figure 1 The diagram shown is a schematic of a refrigerator 300 provided in an embodiment of this application, including a cabinet 310 and doors. The doors are pivotally connected to the cabinet 310 via hinges, allowing the doors to be opened or closed relative to the cabinet 310 via the hinges. It should be noted that in this embodiment, the refrigerator 300 can be a single-door refrigerator 300 or a multi-door refrigerator 300; this application is not limited to this. For example, as shown in Figure 1, a three-door refrigerator 300, wherein each door of the refrigerator 300 has a similar structure and can be connected to the cabinet 310 via hinges.

[0025] Due to limitations in the manufacturing process of refrigerator 300, the door may shift towards the cabinet 310 after it is opened due to the shift in its center of gravity, resulting in insufficient opening angle or automatic closing of the door, thus reducing the user experience.

[0026] To address the issue of doors automatically closing due to a shift in the center of gravity, some embodiments of this application provide a hovering structure. The door and the housing 310 can be pivotally connected via this hovering structure, allowing the door to hover at a target position after opening, thus preventing the door from automatically closing due to a shift in the center of gravity. Figure 2As shown, the hovering structure includes a hinge assembly 100 and a connecting portion 200 pivotally connected to the hinge assembly 100. The hinge assembly 100 includes a hinge shaft 110, a hinge sleeve 120, a roller 130, and a sliding ring 140. The connecting portion 200 is pivotally connected to the outer surface of the sliding ring 140. The sliding ring 140 is sleeved on the hinge sleeve 120 and fixedly connected to it. The hinge sleeve 120 is sleeved on the hinge shaft 110 and rotatably connected to it, allowing the hinge sleeve 120 to rotate clockwise or counterclockwise around the hinge shaft 110.

[0027] Roller 130 is positioned between hinge sleeve 120 and sliding ring 140. The axis of roller 130 is parallel to the axis of hinge sleeve 120 and the axis of sliding ring 140, respectively, and the outer surface of roller 130 abuts against the outer surface of hinge sleeve 120 and the inner surface of sliding ring 140, respectively. This allows roller 130 to move relative to sliding ring 140 after overcoming friction when hinge sleeve 120 rotates around hinge axis 110. To fix the position of roller 130 and prevent it from shifting when hinge sleeve 120 rotates around hinge axis 110, such as... Figure 2 As shown, a limiting notch 121 is also provided on the hinge bushing 120, and the roller 130 is rotatably disposed in the limiting notch 121. The outer surface of the roller 130 abuts against the surface of the limiting notch 121 and the inner surface of the sliding ring 140, respectively.

[0028] In some embodiments, the slide ring 140 can be of various shapes. The circumferential cross-section of the slide ring 140 includes, but is not limited to, circles, ellipses, squares, etc. For example, the slide ring 140 can be a cylindrical structure, that is, the circumferential cross-section of the slide ring 140 is circular. The slide ring 140 can also be a polygonal columnar structure, that is, the circumferential cross-section of the slide ring 140 is polygonal.

[0029] In some embodiments, in order to improve the smoothness and safety of rotation and extend the service life of the suspension structure, the axial height of the hinge shaft 110 can be set to be equal to the axial height of the hinge bushing 120. During the rotation of the hinge bushing 120 around the hinge shaft 110, the outer surface of the hinge shaft 110 is in full contact with the inner surface of the hinge bushing 120, thereby improving the smoothness of rotation.

[0030] Similarly, the axial height of the hinge shaft 110 can be set to be equal to the axial height of the roller 130, and the axial height of the roller 130 can be set to be equal to the axial height of the sliding ring 140. That is, the axial heights of the hinge shaft 110, the hinge bushing 120, the roller 130, and the sliding ring 140 are all equal, thereby improving the smoothness and safety of rotation.

[0031] In some embodiments, the hinge bushing 120 is fixedly connected to the sliding ring 140. During the rotation of the hinge bushing 120 around the hinge shaft 110, the hinge bushing 120 and the sliding ring 140 can rotate as a whole around the hinge shaft 110. In order to improve the tightness of the connection between the hinge bushing 120 and the sliding ring 140, the hinge bushing 120 is provided with a protrusion 124. The protrusion 124 extends from the inner surface of the sliding ring 140 into the sliding ring 140, and the protrusion 124 is fixedly connected to the sliding ring 140.

[0032] The hinge bushing 120 and the sliding ring 140 can also be detachably connected. The hinge bushing 120 has a protrusion 124, and the sliding ring 140 has a recess that mates with the protrusion 124. The protrusion 124 is inserted into the recess to achieve a fixed connection between the hinge bushing 120 and the sliding ring 140. The hinge bushing 120 rotates around the hinge shaft 110 and may wear out. The hinge bushing 120 and the sliding ring 140 can be disassembled, the hinge bushing 120 can be replaced, and the fixed connection between the hinge bushing 120 and the sliding ring 140 can be achieved by engaging the protrusion 124 on the hinge bushing 120 with the recess on the sliding ring 140.

[0033] In some embodiments, to improve the smoothness of rotation, a limiting notch 121 is provided on the hinge bushing 120 to fix the position of the roller 130 and prevent displacement of the roller 130 when the hinge bushing 120 rotates clockwise or counterclockwise around the hinge shaft 110. Figure 3 As shown, the limiting notch 121 may include a first abutting surface 122 and a second abutting surface 123. The roller 130 is rotatably disposed in the limiting notch 121. The outer surface of the roller 130 abuts against the first abutting surface 122 and the second abutting surface 123, and also abuts against the inner surface of the sliding ring 140. By contacting the roller 130 with three surfaces, the position of the roller 130 is fixed. For example, the limiting notch 121 may be a V-shaped notch.

[0034] In some embodiments, the limiting notch 121 can be an L-shaped notch, that is, the limiting notch 121 includes a first abutting surface 122 and abutting surface 123, the first abutting surface 122 and the second abutting surface 123 are perpendicular, the outer surface of the roller 130 abuts against the first abutting surface 122 and the second abutting surface 123 respectively, and also abuts against the inner surface of the sliding ring 140, thereby increasing the rotation space of the roller 130, reducing the friction force on the roller 130, and improving the smoothness of rotation while ensuring the fixed position of the roller 130.

[0035] In some embodiments, there may be multiple limiting notches 121, which may be spaced apart on the hinge sleeve 120, with a roller 130 rotatably disposed in each limiting notch 121. For example, as Figure 4As shown, the hinge bushing 120 is provided with two L-shaped limiting notches 121, which are arranged opposite to each other. Each limiting notch 121 includes a first abutting surface 122 and abutting surface 123. The first abutting surface 122 and the second abutting surface 123 are perpendicular to each other. The roller 130 is rotatably disposed in the limiting notch 121. The outer surface of the roller 130 abuts against the first abutting surface 122, the second abutting surface 123 and the inner surface of the sliding ring 140, respectively.

[0036] The door and housing 310 can be pivotally connected via the aforementioned hovering structure, allowing the door to hover at the target position after opening, thus preventing the door from automatically closing due to a shift in the center of gravity. Figure 4 , Figure 5 As shown, the hinge assembly 100 can be inserted into the door body, that is, the hinge shaft 110, the hinge bushing 120, and the sliding ring 140 are inserted into the door body. The sliding ring 140 is fixedly connected to the door body, realizing the connection between the hinge assembly 100 and the door body. A connecting part 200 is pivotally connected to the sliding ring 140, and the connecting part 200 is connected to the housing 310, thereby realizing the pivotal connection between the housing 310 and the door body. The hinge bushing 120, the sliding ring 140, and the door body can be regarded as a whole, so that the door body can rotate clockwise or counterclockwise around the hinge shaft 110, thereby realizing the opening and closing movement of the door body relative to the housing 310.

[0037] For ease of installation, the door body may be provided with mounting holes, into which the hinge shaft 110, hinge bushing 120 and sliding ring 140 are inserted, and the sliding ring 140 is fixedly connected to the inner wall of the mounting hole. The connecting part 200 is connected to the housing 310.

[0038] In one embodiment, the hovering structure can be positioned at the top of the refrigerator 300, where "top" refers to the side of the refrigerator 300 furthest from the bottom surface, such as... Figure 4 , Figure 5As shown, the hinge shaft 110, hinge bushing 120, and sliding ring 140 extend into the upper frame of the door body. All three are located within the upper frame of the door body. The sliding ring 140 is fixedly connected to the door body. One end of the connecting part 200 is pivotally connected to the hinge assembly 100, and the other end is fixedly connected to a corner of the top of the housing 310. The sliding ring 140 is fitted onto the hinge bushing 120 and fixedly connected to it. The hinge bushing 120 is fitted onto the hinge shaft 110 and rotatably connected to it. The hinge bushing 120 can rotate clockwise or counterclockwise around the hinge shaft 110. The hinge bushing 120 is also provided with a limiting notch 121. A roller 130 is rotatably positioned within the limiting notch 121, meaning the roller 130 is positioned between the hinge bushing 120 and the sliding ring 140. The axis of the roller 130 is parallel to the axis of the hinge bushing 120 and the axis of the sliding ring 140, respectively, and the outer surface of the roller 130 abuts against the outer surface of the hinge bushing 120 and the inner surface of the sliding ring 140, respectively. This connection method enables a pivotal connection between the door and the housing 310. Using the hinge shaft 110 as the pivot axis, the door can pivot clockwise or counterclockwise relative to the hinge shaft 110. Figure 4 The door shown is opened when rotated counterclockwise and closed when rotated clockwise.

[0039] To improve the aesthetics of the refrigerator 300, such as Figure 5 As shown, a door trim strip 321 can be installed on the door body. The door trim strip 321 is laid around the perimeter of the door body. When the door trim strip 321 is laid at the position of the hinge assembly 100, it can be fitted onto the hinge assembly 100. There is a gap between the door trim strip 321 and the roller 130, thereby improving the smoothness of rotation.

[0040] Alternatively, the hovering structure can be located at the bottom of the refrigerator 300, with the hinge shaft 110, hinge sleeve 120, and sliding ring 140 extending into the lower edge of the door body. The sliding ring 140 is fixedly connected to the door body, and the connecting part 200 is fixedly connected to the top corner of the cabinet 310. To improve the tightness of the connection and the aesthetics of the refrigerator 300, the connecting part 200 can be a sheet-like structure. The sheet-like connecting part 200 is fitted and connected to the surface of the cabinet 310, thereby increasing the connection contact area and improving the tightness of the connection.

[0041] When the door moves open and close relative to the housing 310, different forces acting on the door result in different motion patterns between the door and the hinge shaft 110. When the door is opened by an opening force around the hinge shaft 110, a portion of the force is decomposed and applied to the roller 130 as the power source for its rotation. This creates a rolling motion between the door and the hinge shaft 110. This rolling contact reduces friction, improves operational stability, and minimizes force consumption during opening.

[0042] like Figure 6 As shown, this is a schematic diagram of the force on roller 130 when the door is subjected to an opening force. When the door is opened around the hinge shaft 110, the sliding ring 140 and the hinge bushing 120 are fixedly connected to the door as a whole, so that the sliding ring 140 and the hinge bushing 120 rotate with the door. At this time, roller 130 is subjected to the radial force of hinge bushing 120, and at the same time, under the action of friction between roller 130 and sliding ring 140, it rotates with the door and rotates around its own center, forming a rolling motion.

[0043] The static friction between roller 130 and sliding ring 140 is F2 = F1 * cosα * f, and the opening force F1 is decomposed into the force on roller 130 as F0 = F1 * sinα, where f is the coefficient of friction. The force F0 on roller 130 is relatively large, which can drive it to rotate, thereby forming a rolling motion between the door body and hinge shaft 110.

[0044] When the door is closed by a closing force around the hinge shaft 110, the closing force is also partially decomposed and applied to the roller 130 as the power for the roller 130 to rotate. However, due to the direction of the closing force and the limitations of the movable structure between the roller 130 and the hinge shaft 110, the power of the closing force decomposed to the roller 130 is relatively small. The roller 130 does not have enough power to rotate, causing the movement between the door and the hinge shaft 110 to become a dry friction mode. The force of the door closing due to the shift in the center of gravity is insufficient to overcome the friction between the sliding ring 140 and the hinge shaft 110, thus hindering the automatic closing of the door. When the user applies a closing force to the door and overcomes the friction, the roller 130 and the hinge shaft sleeve 120 rotate around the hinge shaft 110 as a whole. At the same time, the roller 130 contacts the sliding ring 140 and slides along the inner wall of the sliding ring 140, thereby closing the door.

[0045] like Figure 7 As shown, this is a schematic diagram of the force on roller 130 when the door is subjected to closing force. When the door closes around hinge shaft 110, the sliding ring 140 and hinge bushing 120 are fixedly connected to the door as an integral structure, so that the sliding ring 140 and hinge bushing 120 rotate with the door. At this time, due to the restriction of the movable structure between roller 130 and hinge shaft 110, the roller 130 cannot roll due to the constraint of the force.

[0046] The static friction between roller 130 and sliding ring 140 is F3 = F4 * cosb * f. The closing force F4 is decomposed into the force on roller 130 as F0 = F4 * sinb, where f is the coefficient of friction. The force F0 on roller 130 is relatively small, and roller 130 does not have sufficient power to rotate, thus changing the movement between the door and hinge shaft 110 to a dry friction mode, preventing the door from automatically closing due to a shift in the center of gravity.

[0047] When the user needs to close the door, an initial force is applied to the door to overcome the friction between the sliding ring 140 and the hinge shaft 110. After overcoming the friction, the roller 130 and the hinge bushing 120 rotate around the hinge shaft 110 as a whole. At the same time, the roller 130 contacts the sliding ring 140 and slides along the inner wall of the sliding ring 140, thereby closing the door.

[0048] It can be seen that when the door moves open and close relative to the housing 310, due to the different forces acting on the door, the angle between the force on roller 130 and the opening force is greater than the angle between the force on roller 130 and the closing force. Figure 6 , Figure 7 Angle 'a' is greater than angle 'b'. With the same coefficient of friction and the same opening and closing forces, the frictional force when closing the door is greater than the frictional force when opening it. Therefore, a smaller opening force is sufficient to overcome the frictional force when opening the door, thus opening it. Conversely, the force required to close the door due to the shift in the center of gravity is insufficient to overcome the frictional force, preventing the door from closing automatically. The door will only close after the user applies a closing force to overcome the frictional force.

[0049] In this embodiment, by adding a roller 130 to the hinge assembly 100, the movement between the door and the hinge shaft 110 is changed. When the door is opened around the hinge shaft 110, the roller 130 can rotate with the door under the action of friction with the sliding ring 140, and rotate around its own center, forming a rolling motion. This reduces the force consumption when opening the door. When the door is closed around the hinge shaft 110, due to the restriction of the movable structure between the roller 130 and the hinge shaft 110, the roller 130 is constrained by force and cannot roll. This changes the movement between the door and the hinge shaft 110 to a dry friction mode, increasing the force required when closing the door and thus hindering the automatic closing of the door.

[0050] Based on the above-described hovering structure, some embodiments of this application also provide a hovering door, including a door body and the aforementioned hovering structure. The hinge assembly 100 includes a hinge shaft 110, a hinge bushing 120, a roller 130, and a sliding ring 140. The sliding ring 140 is sleeved on the hinge bushing 120 and fixedly connected to it. The hinge bushing 120 is sleeved on the hinge shaft 110 and rotatably connected to it, allowing the hinge bushing 120 to rotate clockwise or counterclockwise around the hinge shaft 110. The hinge bushing 120 also has a limiting notch 121, in which the roller 130 is rotatably disposed. The axis of the roller 130 is parallel to the axis of the hinge bushing 120 and the axis of the sliding ring 140, respectively, and the outer surface of the roller 130 abuts against the surface of the limiting notch 121 and the inner surface of the sliding ring 140, respectively. The hinge assembly 100, including the hinge shaft 110, hinge bushing 120, roller 130, and sliding ring 140, extends into the door body, with the sliding ring 140 fixedly connected to the door body. A connecting part 200 is pivotally connected to the sliding ring 140, and the free end of the connecting part 200 can be connected to the device that mounts the door body.

[0051] Based on the above-described hovering structure, some embodiments of this application also provide a refrigerator 300, including a cabinet 310, a door, and the aforementioned hovering structure. The hinge assembly 100 includes a hinge shaft 110, a hinge bushing 120, a roller 130, and a sliding ring 140. The sliding ring 140 is sleeved on the hinge bushing 120 and fixedly connected to it. The hinge bushing 120 is sleeved on the hinge shaft 110 and rotatably connected to it, allowing the hinge bushing 120 to rotate clockwise or counterclockwise around the hinge shaft 110. The hinge bushing 120 also has a limiting notch 121, in which the roller 130 is rotatably disposed. The axis of the roller 130 is parallel to the axis of the hinge bushing 120 and the axis of the sliding ring 140, respectively, and the outer surface of the roller 130 abuts against the surface of the limiting notch 121 and the inner surface of the sliding ring 140, respectively. The hinge assembly 100, comprising the hinge shaft 110, hinge bushing 120, roller 130, and sliding ring 140, extends into the door body, with the sliding ring 140 fixedly connected to the door body. A connecting portion 200 is pivotally connected to the sliding ring 140, and the free end of the connecting portion 200 can connect to the housing 310, thereby achieving a pivotal connection between the housing 310 and the door body. The hinge bushing 120, sliding ring 140, and door body can be considered as a single unit, allowing the door body to rotate clockwise or counterclockwise around the hinge shaft 110, thus enabling the door body to open and close relative to the housing 310.

[0052] As can be seen from the above technical solution, this application provides a hovering structure and a refrigerator 300. The hovering structure includes a hinge assembly 100 and a connecting part 200 pivotally connected to the hinge assembly 100. The hinge assembly 100 includes a hinge shaft 110, a hinge bushing 120, a roller 130, and a sliding ring 140. The sliding ring 140 is sleeved on the hinge bushing 120 and fixedly connected to it. The hinge bushing 120 is sleeved on the hinge shaft 110 and rotatably connected to it. The hinge bushing 120 has a limiting notch 121, and the roller 130 is rotatably disposed in the limiting notch 121. The outer surface of the roller 130 abuts against the surface of the limiting notch 121 and the inner surface of the sliding ring 140, respectively. The refrigerator body 310 and the door of the refrigerator 300 are pivotally connected by a suspension structure. When the door is opened around the hinge axis 110, the force consumed when opening the door is reduced by forming a rolling motion between the door and the hinge axis 110. When the door is closed around the hinge axis 110, the roller 130 is constrained by the moving structure between the roller 130 and the hinge axis 110 and cannot roll. This causes the motion between the door and the hinge axis 110 to become a dry friction form, which increases the force required when closing the door and thus hinders the automatic closing of the door.

[0053] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims

1. A hovering structure, characterized by, The hinge assembly (100) comprises a hinge shaft (110), a hinge shaft sleeve (120), a roller (130) and a sliding ring (140); the connecting part (200) is pivotally connected with the outer surface of the sliding ring (140); the sliding ring (140) is sleeved on the hinge shaft sleeve (120) and is fixedly connected with the hinge shaft sleeve (120); the hinge shaft sleeve (120) is sleeved on the hinge shaft (110) and is rotatably connected with the hinge shaft (110); the hinge shaft sleeve (120) is provided with a limiting gap (121), the roller (130) is rotatably arranged in the limiting gap (121), and the outer surface of the roller (130) abuts against the surface of the limiting gap (121) and the inner surface of the sliding ring (140) respectively. The limiting gap (121) comprises a first abutting surface (122) and a second abutting surface (123), and the outer surface of the roller (130) abuts against the first abutting surface (122) and the second abutting surface (123) respectively; the first abutting surface (122) and the second abutting surface (123) are perpendicular. A plurality of limiting gaps (121) are arranged on the hinge shaft sleeve (120) at intervals. The hinge shaft sleeve (120) is provided with a protruding part (124) which extends into the sliding ring (140).

2. The hovering structure of claim 1, wherein, The connecting part (200) is in a sheet structure.

3. The hovering structure of claim 1, wherein, The axial height of the hinge shaft (110) is equal to the axial height of the hinge shaft sleeve (120).

4. The hovering structure of claim 1, wherein, The axial height of the hinge shaft (110) is equal to the axial height of the roller (130).

5. The hovering structure of claim 1, wherein, The sliding ring (140) is in a circular tube structure.

6. The hovering structure of claim 1, wherein, The box body (310), the door body (320) and the hovering structure of any one of claims 1-7; the hinge assembly (100) of the hovering structure extends into the door body (320), the sliding ring (140) of the hovering structure is fixedly connected with the door body (320); and the connecting part (200) of the hovering structure is connected with the box body (310).

7. The hovering structure of claim 1, wherein, ​ 8. A refrigerator characterized by comprising: ​ ​

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