Rotating shaft mechanism and electronic equipment

Abstract

The invention relates to the technical field of electronic equipment, in particular to a rotating shaft mechanism and electronic equipment. The rotating shaft mechanism provided by the invention comprises a rotating shaft body, a rotating staddle, a fixing piece and a locking nut, wherein the rotating shaft body comprises a rod part and a loading part which are connected with each other; the rotating staddle is arranged on the rod part in a sleeving manner and can rotate around the rod part relative to the rod part; the fixing piece is arranged on the rod part in a sleeving mode and located on the side, away from the loading part, of the rotating staddle. The locking nut is connected with the rod part and located on the side, away from the loading part, of the fixing piece. The friction force between the rotating staddle and the loading part forms first damping, and the friction force between the rotating staddle and the fixing piece forms second damping. Damping force is generated through direct contact between the rotating staddle and the rotating shaft body and between the rotating staddle and the fixing piece, independent elements such as a damper and a spring do not need to be additionally installed, the axial layout can be simplified, and the device is suitable for a small-size space.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic devices, and in particular, to a rotating shaft mechanism and an electronic device. Background Art

[0002] A foldable electronic device generally realizes the foldable function through a rotating shaft mechanism. Specifically, the foldable electronic device includes a first part, a second part, and a rotating shaft mechanism. Among them, the first part and the second part are connected by the rotating shaft mechanism, so that the first part and the second part can rotate relative to each other, and thus the first part and the second part can be overlapped or unfolded with each other. Among them, taking a notebook computer as an example, the first part can be the system side of the notebook computer, and the second part can be the display side of the notebook computer. The system side and the display side are overlapped or unfolded with each other through the rotating shaft mechanism. Or, taking a folding screen mobile phone as an example, the first part can be the main screen side of the folding screen mobile phone, and the second part can be the secondary screen side of the folding screen mobile phone. The main screen side and the secondary screen side are overlapped or unfolded with each other through the rotating shaft mechanism.

[0003] The traditional rotating shaft mechanism has a complex structure, high material cost and assembly cost, and a relatively high price. Summary of the Invention

[0004] The present disclosure provides a rotating shaft mechanism and an electronic device to at least solve the above technical problems existing in the prior art.

[0005] In a first aspect of the present disclosure, a rotating shaft mechanism is provided, including:

[0006] A rotating shaft body, the rotating shaft body includes a rod portion and a loading portion connected to each other;

[0007] A rotating support frame, sleeved on the rod portion and capable of rotating relative to the rod portion around the rod portion;

[0008] A fixing member, sleeved on the rod portion and located on a side of the rotating support frame away from the loading portion;

[0009] A locking nut, connected to the rod portion and located on a side of the fixing member away from the loading portion;

[0010] Wherein, the friction force between the rotating support frame and the loading portion forms a first damping, and the friction force between the rotating support frame and the fixing member forms a second damping.

[0011] Further, the rotating support frame includes a first side, and an elastic deformation portion is formed on the first side. The elastic deformation portion is used to make the rotating support frame have a first damping with the loading portion and a second damping with the fixing member.

[0012] Furthermore, the elastic deformation portion includes a plurality of protrusions, and the plurality of protrusions are arranged around the axis of the rotating support and at intervals along the circumference of the rotating support;

[0013] The protrusion includes a first friction surface facing the fixing member, and the second damping is formed between a plurality of the first friction surfaces and the fixing member.

[0014] Furthermore, the elastic deformation portion includes a plurality of grooves, and the grooves and the protrusions are alternately arranged around the axis of the rotating bracket.

[0015] Furthermore, the protrusion is provided with a through hole leading to the axis of the rotating support.

[0016] Furthermore, a plurality of first oil storage grooves are provided on the surface of the fixing member facing the first friction surface.

[0017] Furthermore, the rotating support includes a second side away from the first side, the second side is provided with a limiting member, the loading part is provided with a limiting groove, the limiting groove is arranged around the axis of the loading part, and the limiting member is arranged in the limiting groove to limit the rotation angle of the rotating support.

[0018] Furthermore, the second side includes a second friction surface facing the loading portion, and the first damping is formed between the second friction surface and the loading portion.

[0019] Furthermore, a plurality of second oil storage grooves are provided on the surface of the loading portion facing the second friction surface.

[0020] A second aspect of the present disclosure provides an electronic device, comprising the hinge mechanism described in the first aspect.

[0021] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0022] The rotating shaft mechanism provided by the embodiments of the present disclosure includes a rotating shaft body, a rotating support, a fixing member, and a locking nut. The rotating shaft body includes a rod portion and a loading portion that are connected to each other; the rotating support is sleeved on the rod portion and can rotate relative to the rod portion around the rod portion; the fixing member is sleeved on the rod portion and is located on the side of the rotating support away from the loading portion; the locking nut is connected to the rod portion and is located on the side of the fixing member away from the loading portion; by changing the tightening degree of the locking nut, the axial distance between the fixing member and the rotating support can be synchronously compressed. Among them, the frictional force between the rotating support and the loading portion forms a first damping force, and the frictional force between the rotating support and the fixing member forms a second damping force. By changing the tightening degree of the locking nut, the axial distance between the fixing member and the rotating support can be synchronously compressed to increase the second damping force; the first damping force can also be indirectly adjusted by the axial pressure. In this embodiment, through the first damping force between the rotating support and the loading portion and the second damping force between the rotating support and the fixing member, a bidirectional frictional damping force is formed, and the rotational resistance of the rotating support can be adjusted independently or cooperatively. In addition, the double damping points are distributed on both sides of the rotating support, which can suppress the axial movement and radial swing during rotation, and is especially suitable for scenarios where high positioning accuracy is required. In this embodiment, the damping force is generated through the direct contact between the rotating support and the rotating shaft body and the fixing member, and there is no need to additionally install independent components such as dampers and springs, which can simplify the axial layout and is suitable for small-size spaces. The double damping structure can absorb the rotational impact energy through the friction surface and reduce the rigid collision between components.

[0023] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become easily understood. In the drawings, several embodiments of the present disclosure are shown in an exemplary rather than restrictive manner, where:

[0025] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0026] Figure 1 A schematic structural diagram of the rotating shaft mechanism provided by the embodiments of the present disclosure is shown;

[0027] Figure 2 An exploded view of the rotating shaft mechanism provided by the embodiments of the present disclosure is shown;

[0028] Figure 3 Another exploded view of the rotating shaft mechanism provided by the embodiments of the present disclosure is shown.

[0029] Description of reference numerals in the figure: 1. Rotating shaft body; 11. Rod portion; 111. External thread; 12. Loading portion; 121. Limiting groove; 122. Second oil storage groove; 2. Rotating support; 21. Protrusion; 211. First friction surface; 212. Through hole; 22. Groove; 23. Limiting member; 24. Second friction surface; 3. Fixing member; 31. First oil storage groove; 4. Locking nut. Detailed implementation manners

[0030] To make the objectives, features, and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present disclosure.

[0031] Combined with Figure 1 、 Figure 2 and Figure 3 As shown, the rotating shaft mechanism provided by the embodiment of the present disclosure includes a rotating shaft body 1, a rotating support 2, a fixing member 3, and a locking nut 4. The rotating shaft body 1 includes a rod portion 11 and a loading portion 12 that are connected to each other; the rotating support 2 is sleeved on the rod portion 11 and can rotate relative to the rod portion 11 around the rod portion 11; the fixing member 3 is sleeved on the rod portion 11 and is located on the side of the rotating support 2 away from the loading portion 12; the locking nut 4 is connected to the rod portion 11 and is located on the side of the fixing member 3 away from the loading portion 12; by changing the tightening degree of the locking nut 4, the axial distance between the fixing member 3 and the rotating support 2 can be synchronously compressed.

[0032] Among them, the frictional force between the rotating support 2 and the loading portion 12 forms a first damping, and the frictional force between the rotating support 2 and the fixing member 3 forms a second damping. By changing the tightening degree of the locking nut 4, the axial distance between the fixing member 3 and the rotating support 2 can be synchronously compressed, increasing the second damping (such as end face friction); if the loading portion 12 is a shoulder structure, the first damping (the contact surface friction between the shoulder and the rotating support 2) can also be indirectly adjusted by the axial pressure. In this embodiment, through the first damping between the rotating support 2 and the loading portion 12 and the second damping between the rotating support 2 and the fixing member 3, a bidirectional frictional damping force is formed, which can independently or cooperatively adjust the rotational resistance of the rotating support 2. In addition, the double damping points are distributed on both sides of the rotating support 2, which can suppress axial movement and radial swing during rotation, especially suitable for scenarios where high positioning accuracy is required. In this embodiment, the damping force is generated by the direct contact between the rotating support 2 and the rotating shaft body 1 and the fixing member 3, without the need to additionally install independent components such as dampers and springs, which can simplify the axial layout and is suitable for small-size spaces (such as folding devices and portable instruments). The double damping structure can absorb rotational impact energy through the friction surface and reduce rigid collisions between components.

[0033] Optionally, the fixing member 3 can be annular. The fixing member 3 has a non-circular through-hole sleeved on the rod portion 11. The rod portion 11 has a non-circular cross-section, and the non-circular cross-section of the non-circular through-hole is adapted to make the fixing member 3 and the rod portion 11 fixed relative to each other circumferentially.

[0034] Optionally, the rod portion 11 is provided with an external thread 111, and the lock nut 4 is threadedly connected to the rod portion 11.

[0035] In some specific embodiments, the rotating support 2 includes a first side, and an elastic deformation portion is formed on the first side. The elastic deformation portion is used to provide a first damping between the rotating support 2 and the loading portion 12, and a second damping between the rotating support 2 and the fixing member 3. The elastic deformation portion can dynamically adjust the normal pressure of the friction surface through its own deformation (such as bending, compression), so that the damping force is adaptively adjusted according to the load. The elastic deformation portion has the dual functions of providing elastic force and friction damping surface, without the need to additionally install independent components such as springs and damping sheets, reducing the number of parts and assembly processes. Compared with the traditional solution, this embodiment is realized through the structure of the rotating support 2 itself, reducing costs and space occupation.

[0036] In some specific embodiments, the elastic deformation portion includes a plurality of protrusions 21. The plurality of protrusions 21 are arranged around the axis of the rotating support 2 and at intervals along the circumferential direction of the rotating support 2; the protrusion 21 includes a first friction surface 211 facing the fixing member 3, and a second damping is formed between the plurality of first friction surfaces 211 and the fixing member 3.

[0037] The protrusion 21 and the fixing member 3 are in non-continuous surface contact. Compared with the whole-ring annular friction surface, the single-point contact pressure is concentrated but the wear area is dispersed, which can delay the fatigue wear of a single part.

[0038] The plurality of protrusions 21 are evenly arranged at intervals along the circumferential direction of the rotating support 2 (such as evenly distributing 2 to 8), so that the fixing member 3 and the first friction surface 211 of the protrusion 21 form an annular multi-point contact, ensuring that the damping force is evenly distributed at each angle in the circumferential direction during the rotation process. The uniform damping force can suppress the circumferential swing of the rotating support 2 (i.e., the periodic phenomenon of "sticking-loosening"), and improve the rotation smoothness (such as the feel consistency during angle adjustment).

[0039] In some specific embodiments, the elastic deformation part includes a plurality of grooves 22, and the grooves 22 and the protrusions 21 are alternately arranged around the axis of the rotating support 2. When the protrusion 21 is pressed, elastic deformation causes the top or side surface to form a point / line contact with the fixing member 3, generating high friction damping; in the groove 22 area, due to the concave structure, there is no direct contact with the fixing member 3 or only light contact at the edge, forming a low-damping dead zone. The grooves 22 and the protrusions 21 are alternately distributed along the circumferential direction of the rotating support 2 (such as convex-concave-convex-concave), forming an annular structure with alternating "high-damping zones" and "low-damping zones", so that the rotating support 2 experiences periodic changes in damping force during rotation.

[0040] In some specific embodiments, the protrusion 21 is provided with a through hole 212 leading to the axis of the rotating support 2. This enables the protrusion 21 to form a deformation area, and the normal pressure of the friction surface is dynamically adjusted through the self-deformation of the protrusion 21 (such as bending, compression), so that the damping force is adaptively adjusted according to the load change.

[0041] In some specific embodiments, the surface of the fixing member 3 facing the first friction surface 211 is provided with a plurality of first oil storage grooves 31. The first oil storage grooves 31 can be annular grooves or radial grooves, which can improve the friction life and avoid torque attenuation.

[0042] In some specific embodiments, the rotating support 2 includes a second side facing away from the first side, and a limiting member 23 is provided on the second side. The loading part 12 is provided with a limiting groove 121, and the limiting groove 121 is arranged around the axis of the loading part 12. The limiting member 23 is arranged in the limiting groove 121 to limit the rotation angle of the rotating support 2. The limiting member 23 can be a protrusion 21, a pin, etc. The limiting member 23 is embedded in the circumferentially surrounding limiting groove 121 of the loading part 12. The limiting groove 121 can be an annular groove 22 or a sector groove, etc. The rotation range of the rotating support 2 (such as ±30°, 180°, etc.) is limited through the physical contact between the two. The cooperation of the limiting member 23 and the limiting groove 121 can provide stops for the rotating support 2 at the maximum and minimum rotation angles.

[0043] In some specific embodiments, the second side includes a second friction surface 24 facing the loading part 12, and a first damping is formed between the second friction surface 24 and the loading part 12. The rotating support 2 forms two-way friction damping on both axial sides through the first friction surface 211 (contacting the fixing member 3) and the second friction surface 24 (contacting the loading part 12), suppressing axial movement and circumferential swing during rotation. By compressing the fixing member 3 with the lock nut 4, the normal pressures of the first friction surface 211 and the second friction surface 24 can be synchronously increased, realizing linear continuous adjustment of the damping force and meeting the multi-mode requirements of "fine adjustment for light load and locking for heavy load".

[0044] In some specific embodiments, a plurality of second oil storage grooves 122 are provided on the surface of the loading portion 12 facing the second friction surface 24. The second oil storage grooves 122 can be annular grooves or radial grooves, which can improve the friction life and avoid torque attenuation.

[0045] The electronic device provided by the embodiment of the present disclosure includes the rotating shaft mechanism provided by the embodiment of the present disclosure. Since the electronic device provided by the embodiment of the present disclosure and the rotating shaft mechanism provided by the embodiment of the present disclosure have the same advantages, they will not be elaborated here.

[0046] It should be understood that various forms of the processes shown above can be used, steps can be reordered, added or deleted. For example, the steps described in the disclosure of the present invention can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solution of the present disclosure can be achieved, and no limitation is made herein.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present disclosure, "a plurality of" means two or more, unless otherwise specifically defined.

[0048] The above are only specific embodiments of the present disclosure, but the protection scope of the present patent disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A rotating shaft mechanism, characterized in that, Comprising: A rotating shaft body (1), the rotating shaft body (1) comprising a rod portion (11) and a loading portion (12) connected to each other; A rotating support (2) sleeved on the rod portion (11) and capable of rotating relative to the rod portion (11) about the rod portion (11); A fixing member (3) sleeved on the rod portion (11) and located on a side of the rotating support (2) away from the loading portion (12); A locking nut (4) connected to the rod portion (11) and located on a side of the fixing member (3) away from the loading portion (12); Wherein, the frictional force between the rotating support (2) and the loading portion (12) forms a first damping, and the frictional force between the rotating support (2) and the fixing member (3) forms a second damping.

2. The shaft mechanism according to claim 1, characterized in that, The rotating support (2) includes a first side, and an elastic deformation portion is formed on the first side, and the elastic deformation portion is used to make there be a first damping between the rotating support (2) and the loading portion (12), and there be a second damping between the rotating support (2) and the fixing member (3).

3. The shaft mechanism according to claim 2, wherein, The elastic deformation portion includes a plurality of protrusions (21), and the plurality of protrusions (21) are arranged at intervals along the circumferential direction of the rotating support (2) around the axis of the rotating support (2); The protrusion (21) includes a first friction surface (211) facing the fixing member (3), and the second damping is formed between the plurality of first friction surfaces (211) and the fixing member (3).

4. The rotating shaft mechanism according to claim 3, wherein The elastic deformation portion includes a plurality of grooves (22), and the grooves (22) and the protrusions (21) are alternately arranged around the axis of the rotating support (2).

5. The rotating shaft mechanism according to claim 3, characterized in that, The protrusion (21) is provided with a through hole (212) leading to the axis of the rotating support (2).

6. The rotating shaft mechanism according to claim 3, characterized in that The surface of the fixing member (3) facing the first friction surface (211) is provided with a plurality of first oil storage grooves (31).

7. The shaft mechanism according to claim 2, characterized in that The rotating support (2) includes a second side facing away from the first side, a limiting member (23) is provided on the second side, a limiting groove (121) is provided on the loading portion (12), the limiting groove (121) is arranged around the axis of the loading portion (12), and the limiting member (23) is arranged in the limiting groove (121) to limit the rotation angle of the rotating support (2).

8. The rotating shaft mechanism according to claim 7, wherein The second side includes a second friction surface (24) facing the loading portion (12), and the first damping is formed between the second friction surface (24) and the loading portion (12).

9. The rotating shaft mechanism according to claim 8, wherein, The surface of the loading portion (12) facing the second friction surface (24) is provided with a plurality of second oil storage grooves (122).

10. An electronic device, characterized in that, Comprising the rotating shaft mechanism according to any one of claims 1 to 9.

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