Rotating shaft structure and electronic device

By introducing a sliding component and flow control of the liquid medium into the rotating shaft structure, combined with the sealing mechanism of the push rod, the problem of unstable suspension of the upper cover caused by wear of the flexible sleeve was solved, and the rotating component was able to be suspended at any angle and have a damping feel.

CN117307592BActive Publication Date: 2026-06-26SHEN ZHEN BAO XIN CHUANG XIN XI JI SHU YOU XIAN GONG SI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHEN ZHEN BAO XIN CHUANG XIN XI JI SHU YOU XIAN GONG SI
Filing Date
2023-09-14
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The flexible sleeve wears down with each rotation in the rotating shaft structure, causing the outer diameter to decrease or the pin hole diameter to increase, making it impossible for the top cover to be suspended at any angle.

Method used

The structure employs a sliding component, a liquid medium, and a push rod within the shaft body. The sliding component drives the liquid medium to flow, and the push rod seals the connecting hole, thereby enabling the second rotating component to hover relative to the first rotating component.

Benefits of technology

This allows the second rotating component to be suspended at any angle, solves the problem of clearance caused by wear, and provides damping and stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the present application relates to the technical field of electronic equipment, and particularly relates to a rotating shaft structure and electronic equipment, which comprises a shaft body provided with a first cavity, a second cavity, a communication hole, a rotating hole and a sliding hole, the communication hole communicates the first cavity and the second cavity, the sliding hole is communicated with the second cavity, the rotating hole is communicated with the first cavity, and the shaft body is used for connecting a first rotating part; a sliding part is inserted into the first cavity from the rotating hole, the sliding part can reciprocate along the axis of the rotating hole to the communication hole in the first cavity, but the sliding part is not allowed to rotate relative to the first cavity, and the sliding part is used for screwing with a second rotating part; a liquid medium is accommodated in the first cavity and the second cavity; a push rod is used for being inserted into the communication hole after penetrating through the sliding hole and the second cavity; and an elastic part has one end connected to the inner wall of the shaft body and the other end connected to the push rod. Through the above mode, the rotating shaft structure can make the second rotating part hover at any angle relative to the first rotating part.
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Description

Technical Field

[0001] This invention relates to the field of electronic device technology, and in particular to a rotating shaft structure and an electronic device. Background Technology

[0002] For portability, many electronic devices are designed to be foldable, such as laptops. Foldable electronic devices typically include a lower shell, a top cover, and a flexible sleeve. The lower shell has a pin hole, the top cover has a hinge, and the flexible sleeve is fitted onto the hinge. The end of the hinge with the flexible sleeve is inserted into the pin hole, so that the hinge with the flexible sleeve and the pin hole have an interference fit. This allows the top cover to rotate relative to the lower shell, thus enabling the top cover to fold onto the lower shell, or to open relative to the lower shell, and the top cover to be suspended at any angle relative to the lower shell.

[0003] However, in the process of implementing the embodiments of the present invention, the inventors discovered that as the number of rotations increases, the wear on the outer surface of the flexible sleeve fitted on the rotating shaft also increases, causing the outer diameter of the flexible sleeve to gradually decrease, or as the pin hole wears, the size of the pin hole gradually increases, resulting in a clearance fit between the rotating shaft fitted with the flexible sleeve and the pin hole, and the upper cover cannot be suspended at any angle relative to the lower shell. Summary of the Invention

[0004] This invention provides a rotating shaft structure that allows a second rotating member to be suspended at any angle relative to a first rotating member.

[0005] To solve the above-mentioned technical problems, the present invention provides a rotating shaft structure, including a shaft body, having a first cavity, a second cavity, a connecting hole, a rotating hole, and a sliding hole. The connecting hole connects the first cavity and the second cavity, the sliding hole connects to the second cavity, and the rotating hole connects to the first cavity. The shaft body is used to connect a first rotating member. A sliding member is inserted into the first cavity through the rotating hole. The sliding member can slide back and forth along the axis of the rotating hole towards the connecting hole within the first cavity, but is not allowed to rotate relative to the first cavity. The sliding member is used to be screwed to a second rotating member. A liquid medium is contained in the first cavity and the second cavity. A push rod is used to pass through the sliding hole and the second cavity and then be inserted into the connecting hole. An elastic member is provided, with one end connected to the inner wall of the shaft body and the other end connected to the push rod. When the second rotating member is driven... When the rotating member rotates along the first direction, the second rotating member drives the sliding member to move towards the connecting hole. The sliding member pushes the liquid medium towards the second cavity, thereby pushing the push rod to move away from the first cavity, so that the connecting hole opens, the second cavity and the first cavity are connected, and the liquid medium in the first cavity can flow into the second cavity through the connecting hole. When the second rotating member stops rotating along the first direction, under the action of the elastic member, the elastic member drives the push rod to move towards the connecting hole, so that the push rod is inserted into the connecting hole, and the push rod blocks the connecting hole. When the push rod is driven to make the second cavity connect with the first cavity, the sliding member is allowed to move away from the connecting hole, thereby allowing the second rotating member to rotate along the second direction, wherein the first direction is opposite to the second direction.

[0006] Optionally, the shaft body is provided with a sliding groove on the inner wall of the first cavity, and the sliding groove is provided along the direction from the rotating hole to the connecting hole; the outer wall of the sliding member is provided with a sliding platform, and the sliding platform is inserted into the sliding groove. The sliding platform and the sliding groove are connected to allow the sliding member to slide back and forth along the axis from the rotating hole to the connecting hole in the first cavity, but the sliding member is not allowed to rotate relative to the first cavity.

[0007] Optionally, the end of the slider near the rotating hole is provided with a threaded hole, which is used to screw into the second rotating member.

[0008] Optionally, the push rod includes a plug and a connecting rod, one end of the connecting rod passes through the sliding hole and the second cavity and is connected to the plug, the other end of the elastic element is connected to the connecting rod, and the plug is used to be inserted into the communicating hole.

[0009] Optionally, the cross-sectional area of ​​the connecting hole gradually increases along the direction from the first cavity to the second cavity; the cross-sectional area of ​​the plug gradually increases along the direction from the first cavity to the second cavity.

[0010] Optionally, the shaft body is provided with a first through hole, which is located between the first cavity and the second cavity; the push rod further includes a limiting ring, which is connected to the periphery of the plug, and the limiting ring is provided with a second through hole; when the limiting ring rotates to the point where the first through hole and the second through hole are aligned, the first through hole and the second through hole communicate, and the first cavity and the second cavity communicate through the first through hole and the second through hole; when the limiting ring rotates to the point where the first through hole and the second through hole are misaligned, the limiting ring closes the first through hole.

[0011] Optionally, the push rod further includes a knob portion located at the other end of the connecting rod.

[0012] Optionally, the knob is provided with scale markings.

[0013] Optionally, the rotating shaft structure further includes a piston disposed around the periphery of the connecting rod, the piston being located in the second cavity, and the other end of the elastic element being connected to the piston.

[0014] Optionally, the shaft body is provided with a threaded opening, which communicates with the second cavity; the rotating shaft structure includes a nut, which is screwed onto the threaded opening and closes the threaded opening; the sliding hole is provided in the nut; and one end of the elastic element is connected to the nut.

[0015] To solve the above-mentioned technical problems, the present invention provides an electronic device, including a first rotating component, a second rotating component, and the aforementioned rotating shaft structure. The shaft of the rotating shaft structure is fixed to the first rotating component, and the second rotating component is provided with a screw. The screw passes through the rotating hole and is screwed to the second rotating component.

[0016] The beneficial effects of this application embodiment are as follows: When the second rotating member is driven to rotate in the first direction, the second rotating member drives the sliding member to move towards the connecting hole. The sliding member pushes the liquid medium towards the second cavity, thereby pushing the push rod to move away from the first cavity, so that the connecting hole is opened, the second cavity and the first cavity are connected, and the liquid medium in the first cavity can flow into the second cavity from the connecting hole. The push rod drives the elastic member to perform compression movement, and the elastic member generates elastic force, so that driving the second rotating member to rotate in the first direction has a damping feel. When the second rotating member stops rotating in the first direction, under the action of the elastic member, the elastic member drives the push rod to move towards the connecting hole, so that the push rod is inserted into the connecting hole, and the push rod blocks the connecting hole. In addition, when the second rotating member is driven to rotate in the second direction, the plug of the push rod is inserted into the connecting hole, preventing the liquid medium in the second cavity from flowing into the first cavity, so that the second rotating member is not allowed to rotate in the second direction, so that the second rotating member is suspended at any angle relative to the first rotating member. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application 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 the drawings without creative effort.

[0018] Figure 1 This is a view of an electronic device provided in an embodiment of the present invention;

[0019] Figure 2 This is an exploded view of another view of the electronic device provided in an embodiment of the present invention;

[0020] Figure 3 This is a view of the electronic device in a cross-sectional state provided in an embodiment of the present invention;

[0021] Figure 4 This is another view of the electronic device provided in the embodiment of the present invention, in a cutaway and exploded state;

[0022] Figure 5 This is another view of the electronic device provided in the embodiment of the present invention, in a cutaway and exploded state;

[0023] Figure 6 This is an internal structural diagram of the rotating shaft structure provided in an embodiment of the present invention;

[0024] Figure 7 This is provided by the embodiments of the present invention. Figure 6 Enlarged view of part A.

[0025] Figure label:

[0026] 100. Rotating shaft structure; 200. First rotating component; 300. Second rotating component;

[0027] 10. Shaft; 20. Sliding element; 30. Liquid medium; 40. Push rod; 50. Elastic element; 60. Piston; 70. Nut; 80. Threaded opening; 90. Limiting structure; 300a. Screw; 3001. Limiting part; 3002. Threaded part; 10a. First cavity; 10b. Second cavity; 10c. Connecting hole; 10d. Rotary hole; 10e. Sliding hole; 10f. Sliding groove; 10g. First through hole; 201. Slide table; 20a. Threaded hole; 401. Plug; 402. Connecting rod; 403. Limiting ring; 404. Knob part; 40a. Second through hole. Detailed Implementation

[0028] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figure 1An electronic device 1 includes a hinge structure 100, a first rotating member 200, and a second rotating member 300. The hinge structure 100 is located between the first rotating member 200 and the second rotating member 300, and is fixed to the first rotating member 200. The second rotating member 300 is rotatably connected to the hinge structure 100. A user can apply external force to the second rotating member 300 to rotate it relative to the first rotating member 200. It should be noted that in this embodiment, the electronic device 1 can be a laptop computer, a foldable mobile phone, or any foldable electronic device 1; no limitation is made here. For example, taking a laptop computer as an example, the first rotating member 200 is the lower shell of the laptop computer, the second rotating member 300 is the upper cover, and the hinge structure 100 is disposed between the lower shell and the upper cover. A user can apply external force to open or close the upper cover relative to the lower shell.

[0031] For the second rotating member 300 mentioned above, please refer to Figure 2 The second rotating member 300 is provided with a screw 300a, which is used to be inserted into the rotating shaft structure 100 to realize the rotation of the second rotating member 300 relative to the first rotating member 200.

[0032] Please refer to the above-mentioned shaft structure 100. Figures 1-4 The rotating shaft structure 100 includes a shaft body 10 and a sliding member 20. One end of the shaft body 10 is fixed to the first rotating member 200, and the sliding member 20 is disposed at the other end of the shaft body 10. The end of the sliding member 20 away from the shaft body 10 is provided with a threaded hole 20a. The screw 300a of the second rotating member 300 is screwed into the threaded hole 20a, so that the second rotating member 300 can rotate relative to the first rotating member 200.

[0033] For the aforementioned shaft 10, please refer to Figures 3-4The shaft 10 is provided with a first cavity 10a, a second cavity 10b, a connecting hole 10c, a rotating hole 10d, and a sliding hole 10e. The connecting hole 10c connects the first cavity 10a and the second cavity 10b. The cross-sectional area of ​​the connecting hole 10c gradually increases along the direction from the first cavity 10a to the second cavity 10b. The rotating hole 10d is located at the end of the first cavity 10a away from the second cavity 10b and is connected to the first cavity 10a. The sliding hole 10e is located at the end of the second cavity 10b away from the first cavity 10a and is connected to the second cavity 10b. The sliding member 20 can be slidably inserted into the rotating hole 10d of the shaft 10, but the sliding member 20 cannot rotate relative to the shaft 10. The threaded hole 20a corresponds to the end near the rotating hole 10d. The screw 300a of the second rotating member 300 is screwed into the threaded hole 20a. Specifically, a groove 10f is provided at the end of the first cavity 10a away from the second cavity 10b. The groove 10f is located on the inner wall of the first cavity 10a and is arranged along the direction from the rotating hole 10d towards the connecting hole 10c. A sliding table 201 is provided on the outer wall of the sliding member 20. Figure 5 As shown, the slide 201 is inserted into the slide groove 10f. The sliding table 201 and the slide groove 10f are connected to allow the sliding member 20 to slide back and forth along the axis of the rotating hole 10d towards the connecting hole 10c within the first cavity 10a, but the sliding member 20 is not allowed to rotate relative to the first cavity 10a. In some embodiments, multiple slide grooves 10f are provided, and multiple slide tables 201 are provided on the outer wall of the sliding member 20. One slide table 201 corresponds to one slide groove 10f, so that the sliding member 20 slides more stably relative to the shaft 10. The shaft 10 is also provided with a first through hole 10g, which is located between the first cavity 10a and the second cavity 10b. One end of the first through hole 10g is connected to the first cavity 10a, and the other end of the first through hole 10g is connected to the second cavity 10b.

[0034] The aforementioned shaft 10 also includes a limiting structure 90, such as... Figure 3 As shown, the limiting structure 90 is used to restrict the movement of the second rotating member 300 along the direction from the first cavity 10a to the second cavity 10b or along the direction from the second cavity 10b to the first cavity 10a, but allows the second rotating member to rotate relative to the shaft 10. When the second rotating member 300 is driven to rotate in the first direction, the screw 300a of the second rotating member 300 drives the sliding member 20 to slide along the direction from the first cavity 10a to the second cavity 10b. When the second rotating member 300 is driven to rotate in the second direction, the screw 300a of the second rotating member 300 drives the sliding member 20 to slide along the direction from the second cavity 10b to the first cavity 10a, wherein the first direction is opposite to the second direction.

[0035] For the aforementioned shaft 10, please refer to Figures 3-4The shaft 10 also includes a liquid medium 30, a push rod 40, and an elastic element 50. The liquid medium 30 is housed in the first cavity 10a and the second cavity 10b. The push rod 40 is used to pass through the sliding hole 10e and the second cavity 10b and then be inserted into the connecting hole 10c. One end of the elastic element 50 is connected to the inner wall of the shaft 10, and the other end of the elastic element 50 is connected to the push rod 40. When the second rotating member 300 is driven to rotate in the first direction, the second rotating member 300 drives the sliding member 20 to move in the direction of the connecting hole 10c. The sliding member 20 pushes the liquid medium 30 to move in the second cavity 10b, thereby pushing the push rod 40 to move away from the first cavity 10a, so that the connecting hole 10c is opened, the second cavity 10b and the first cavity 10a are connected, and the liquid medium 30 in the first cavity 10a can flow into the second cavity 10b from the connecting hole 10c. When the second rotating member 300 stops rotating in the first direction, under the action of the elastic member 50, the elastic member 50 drives the push rod 40 to move in the connecting hole 10c, so that the push rod 40 is inserted into the connecting hole 10c and the push rod 40 blocks the connecting hole 10c. When the push rod 40 is driven to make the second cavity 10b and the first cavity 10a connected, the sliding member 20 is allowed to move in the direction away from the connecting hole 10c, thereby allowing the second rotating member 300 to rotate in the second direction.

[0036] For the aforementioned pusher 40, please refer to... Figures 6-7 The push rod 40 includes a plug 401 and a connecting rod 402. One end of the connecting rod 402 passes through the sliding hole 10e and the second cavity 10b and is connected to the plug 401. The other end of the elastic element 50 is connected to the connecting rod 402. It is worth noting that the cross-sectional area of ​​the plug 401 gradually increases along the direction from the first cavity 10a to the second cavity 10b. The plug 401 is used to insert into the connecting hole 10c. When the plug 401 is inserted into the connecting hole 10c, not only does the connecting hole 10c guide the plug 401, but the mating connection between the connecting hole 10c and the plug 401 also has a limiting function.

[0037] The aforementioned push rod 40 also includes a limiting ring 403, such as Figure 6 Combination Figure 7 As shown, the limiting ring 403 is connected to the periphery of the plug 401, and the limiting ring 403 is provided with a second through hole 40a, as shown. Figure 1As shown. When the plug 401 is inserted into the connecting hole 10c, the limiting ring 403 presses against the opening of the connecting hole 10c near the second cavity 10b, and the limiting ring 403 acts as a seal, restricting the flow of liquid medium 30 from the second cavity 10b into the first cavity 10a. When the limiting ring 403 rotates to align the first through hole 10g and the second through hole 40a, the first through hole 10g and the second through hole 40a communicate, connecting the first cavity 10a and the second cavity 10b. When the limiting ring 403 rotates to displace the first through hole 10g and the second through hole 40a, the limiting ring 403 closes the first through hole 10g, and at this time, the first cavity 10a and the second cavity 10b are not connected. In some embodiments, there are two second through holes 40a, and the two second through holes 40a are arranged at intervals along the circumferential direction of the limiting ring 403.

[0038] The aforementioned push rod 40 also includes a knob 404, such as Figure 6 As shown, a knob 404 is located at the other end of the connecting rod 402. The knob 404 is used to facilitate the user to apply external force to connect or disconnect the first through hole 10g from the second through hole 40a. When the first through hole 10g is connected to the second through hole 40a, that is, when the second cavity 10b is connected to the first cavity 10a, the liquid medium 30 in the second cavity 10b is allowed to flow into the first cavity 10a, or the liquid medium 30 in the first cavity 10a is allowed to flow into the second cavity 10b. When the first through hole 10g is disconnected from the second through hole 40a, the liquid medium 30 in the second cavity 10b is not allowed to flow into the first cavity 10a, or the liquid medium 30 in the first cavity 10a is not allowed to flow into the second cavity 10b.

[0039] The knob part 404 mentioned above is provided with scale markings, and the user can use the scale markings to identify whether the first through hole 10g and the second through hole 40a are connected or staggered.

[0040] The aforementioned rotating shaft structure 100 also includes a piston 60 disposed around the periphery of the connecting rod 402, such as... Figure 3As shown. Piston 60 is located in the second chamber 10b, and the other end of elastic member 50 is connected to piston 60. When the second rotating member 300 is driven to rotate in the first direction, the second rotating member 300 drives the sliding member 20 to move towards the connecting hole 10c. The sliding member 20 pushes the liquid medium 30 towards the second chamber 10b, thereby pushing the push rod 40 to move away from the first chamber 10a, so that the connecting hole 10c is opened, the second chamber 10b and the first chamber 10a are connected, and the liquid medium 30 in the first chamber 10a can flow into the second chamber 10b from the connecting hole 10c, so that piston 60 moves in the direction from the first chamber 10a to the second chamber 10b. The elastic member 50 performs a compression movement and generates an elastic force, which makes the push rod 40 maintain a tendency to move towards the connecting hole 10c. When the second rotating member 300 stops rotating in the first direction, under the action of the elastic member 50, the elastic force of the elastic member 50 drives the piston 60 to move towards the connecting hole 10c, so that the push rod 40 is inserted into the connecting hole 10c to block the connecting hole 10c. When driving the second rotating member 300 to rotate in the first direction, it is necessary to overcome the elastic force of the elastic member 50, so that when the user applies external force to the second rotating member 300, there is a damping feeling. In addition, when driving the second rotating member 300 to rotate in the second direction, the plug 401 of the push rod 40 is inserted into the connecting hole 10c, which does not allow the liquid medium 30 of the second cavity 10b to flow into the first cavity 10a, so that the second rotating member 300 is not allowed to rotate in the second direction, and thus the second rotating member 300 is suspended at any angle relative to the first rotating member 200. When the elastic member 50 has an elastic force, and the user rotates the knob part 404 to connect the first through hole 10g and the second through hole 40a, the elastic force of the elastic member 50 can drive the piston 60 to move along the second cavity 10b toward the first cavity 10a, and the liquid medium 30 in the second cavity 10b flows into the first cavity 10a, thereby allowing the second rotating member 300 to rotate in the second direction.

[0041] In some embodiments, the shaft 10 is provided with a threaded opening 80, such as... Figure 4 As shown, the threaded opening 80 connects to the second cavity 10b. The shaft structure 100 includes a nut 70, as shown... Figure 3 As shown, the nut 70 is screwed onto the threaded opening 80, closing the threaded opening 80. A sliding hole 10e is provided in the nut 70, and one end of the elastic element 50 is connected to the nut 70. By rotating the nut 70, it moves along the second cavity 10b towards the first cavity 10a. The length of the elastic element 50 decreases, causing it to compress and generate elastic force. Alternatively, the elastic force of the elastic element 50 may increase or decrease. When the second rotating element 300 rotates along the first direction, it needs to overcome the increased elastic force of the elastic element 50, resulting in increased damping. Conversely, when the nut 70 moves along the first cavity 10a towards the second cavity 10b, the damping of the second rotating element 300 rotating along the first direction decreases.

[0042] In some embodiments, there are two rotating shaft structures 100, which are arranged opposite to each other. One rotating shaft structure 100 is fixed to one end of the first rotating member 200, and the other rotating shaft structure 100 is fixed to the other end of the first rotating member 200. There are also two screws 300a of the second rotating member 300, which are arranged opposite to each other, with one screw 300a corresponding to one rotating shaft structure 100. It is worth noting that the screw 300a includes a limiting part 3001 and a threaded part 3002. The limiting part 3001 is connected to the second rotating member 300 and the threaded part 3002 respectively. The threaded part 3002 passes through and is rotatably threaded into the threaded hole 20a. The cross-sectional area of ​​the limiting part 3001 gradually increases along the direction away from the threaded part 3002. The two limiting parts 3001 located on the second rotating member 300 abut against the first rotating member 200 respectively. That is, the two oppositely arranged limiting parts 3001 can restrict the second rotating member 300 from moving relative to the first rotating member 200 in the direction from the first cavity 10a to the second cavity 10b or from the second cavity 10b to the first cavity 10a, thereby replacing the above-mentioned limiting structure 90.

[0043] It should be noted that while the preferred embodiments of the present invention are given in the specification and accompanying drawings, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of the present invention; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of the present invention. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of the present invention specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A rotating shaft structure, characterized in that, include: The shaft has a first cavity, a second cavity, a connecting hole, a rotating hole, and a sliding hole. The connecting hole connects the first cavity and the second cavity, the sliding hole connects to the second cavity, and the rotating hole connects to the first cavity. The shaft is used to connect a first rotating component. A sliding member is inserted into the first cavity through the rotating hole. The sliding member can slide back and forth along the axis of the rotating hole towards the connecting hole within the first cavity, but the sliding member is not allowed to rotate relative to the first cavity. The sliding member is used to be screwed to the second rotating member. A liquid medium is contained in the first cavity and the second cavity; A push rod is used to pass through the sliding hole and the second cavity and then be inserted into the communicating hole; An elastic element, one end of which is connected to the inner wall of the shaft, and the other end of which is connected to the push rod; When the second rotating member is driven to rotate in the first direction, the second rotating member drives the sliding member to move toward the connecting hole. The sliding member pushes the liquid medium toward the second cavity, thereby pushing the push rod to move away from the first cavity, so that the connecting hole is opened, the second cavity and the first cavity are connected, and the liquid medium in the first cavity can flow into the second cavity from the connecting hole. When the second rotating member stops rotating in the first direction, under the action of the elastic member, the elastic member drives the push rod to move toward the communicating hole, so that the push rod is inserted into the communicating hole and the push rod blocks the communicating hole; When the push rod is driven to make the second cavity communicate with the first cavity, the slider is allowed to move away from the communicating hole, thereby allowing the second rotating member to rotate in a second direction, wherein the first direction is opposite to the second direction.

2. The rotating shaft structure according to claim 1, characterized in that, The shaft body is provided with a sliding groove on the inner wall of the first cavity, and the sliding groove is provided in the direction from the rotating hole to the connecting hole; The outer wall of the slider is provided with a slide platform, which is inserted into the slide groove. The slide platform and the slide groove are connected to allow the slider to slide back and forth along the axis of the rotating hole to the connecting hole in the first cavity, but the slider is not allowed to rotate relative to the first cavity.

3. The rotating shaft structure according to claim 1, characterized in that, The end of the slider near the rotating hole is provided with a threaded hole, which is used to screw into the second rotating member.

4. The rotating shaft structure according to claim 1, characterized in that, The push rod includes a plug and a connecting rod. One end of the connecting rod passes through the sliding hole and the second cavity and is connected to the plug. The other end of the elastic element is connected to the connecting rod. The plug is used to be inserted into the connecting hole.

5. The rotating shaft structure according to claim 4, characterized in that, Along the direction from the first cavity to the second cavity, the cross-sectional area of ​​the connecting hole gradually increases; along the direction from the first cavity to the second cavity, the cross-sectional area of ​​the plug gradually increases.

6. The rotating shaft structure according to claim 4, characterized in that, The shaft is provided with a first through hole, which is located between the first cavity and the second cavity; The push rod also includes a limiting ring, which is connected to the periphery of the plug, and the limiting ring is provided with a second through hole; When the limiting ring rotates to align with the first through hole and the second through hole, the first through hole and the second through hole are connected, and the first cavity and the second cavity are connected through the first through hole and the second through hole; When the limiting ring rotates to the point where the first through hole and the second through hole are misaligned, the limiting ring closes the first through hole.

7. The rotating shaft structure according to claim 6, characterized in that, The push rod also includes a knob, which is located at the other end of the connecting rod.

8. The rotating shaft structure according to claim 7, characterized in that, The knob is equipped with scale markings.

9. The rotating shaft structure according to any one of claims 1-8, characterized in that, The rotating shaft structure also includes a piston disposed around the periphery of the connecting rod, the piston being located in the second cavity, and the other end of the elastic element being connected to the piston.

10. The rotating shaft structure according to claim 9, characterized in that, The shaft is provided with a threaded opening, which is connected to the second cavity; The rotating shaft structure includes a nut, which is screwed onto the threaded opening and closes the threaded opening. A sliding hole is provided in the nut, and one end of the elastic element is connected to the nut.

11. An electronic device comprising a first rotating member, a second rotating member, and a rotating shaft structure as described in any one of claims 1-10, wherein the shaft of the rotating shaft structure is fixed to the first rotating member, and the second rotating member is provided with a screw, the screw passing through the rotating hole and being screwed to the second rotating member.