A rotating shaft and electronic equipment

Abstract

The present application relates to the technical field of electronic equipment, and in particular to a rotating shaft and electronic equipment. The rotating shaft includes a shaft connection and a sleeve connection, the sleeve connection is sleeved on the outside of the shaft connection, and the two can rotate relative to each other. At least one of the outer wall of the shaft connection and the inner wall of the sleeve connection is provided with a protruding structure, and the shaft connection and the sleeve connection have at least a first matching state and a second matching state. In the first matching state, the shaft connection and the sleeve connection have an interference fit at the position of the protruding structure, and in the second matching state, the outer wall of the shaft connection and the inner wall of the sleeve connection have an interference fit. In the present application, as the shaft connection and the sleeve connection are matched, the damping force formed by the two is a process of first decaying and then increasing, so as to better control the attenuation of the torque and extend the service life of the rotating shaft.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a rotating shaft and electronic equipment. Background Art

[0002] In electronic devices with folding or flipping functions, the hinge is an important component. The electronic devices with folding or flipping functions are connected by the hinge so that the electronic devices can be folded or opened.

[0003] At present, the rotating shaft of the electronic device with folding function or flip function can be a wrapped structure, that is, the rotating shaft includes a shaft and a sleeve sleeved on the shaft, and the sleeve and the shaft can rotate relative to each other. The rotating shaft mainly relies on the interference between the shaft and the sleeve to generate torque, and relies on the damping force generated by the friction between the shaft in the sleeve to achieve the function of stopping and positioning the two adjacent parts of the electronic device.

[0004] However, the relative rotation of the shaft and the sleeve increases the wear between the two, causing the damping force generated by the shaft to become smaller and smaller, resulting in insufficient damping force and the two parts of the electronic device being unable to stop and position. Summary of the invention

[0005] The embodiments of the present application provide a rotating shaft and an electronic device, which are intended to provide sufficient damping force and enhance the stability of positioning the electronic device.

[0006] The embodiment of the present application provides a rotating shaft for electronic equipment, the rotating shaft comprising a shaft connecting member and a sleeve connecting member, the sleeve connecting member is sleeved on the outer side of the shaft connecting member, and the two can rotate relative to each other;

[0007] At least one of the outer wall of the shaft connection and the inner wall of the sleeve connection is provided with a protruding structure, and the shaft connection and the sleeve connection have at least a first matching state and a second matching state. In the first matching state, the shaft connection and the sleeve connection are interference fit at the position of the protruding structure, and in the second matching state, the outer wall of the shaft connection and the inner wall of the sleeve connection are interference fit.

[0008] In the embodiment of the present application, at least one of the mutually sleeved sleeve and the shaft connector is provided with a protruding structure, so that when the shaft connector and the sleeve connector are mutually sleeved, the protruding structure is used for interference fit, and the damping force is provided by the protruding structure. During the relative rotation of the shaft connector and the sleeve connector, the two are first in a first matching state, and in the first matching state, as the number of relative rotations of the shaft connector and the sleeve connector increases, the interference amount between the two gradually decreases, and the damping force provided gradually decreases. When the shaft connector and the sleeve connector switch from the first matching state to the second matching state, the matching area of ​​the two increases, so that the damping force increases.

[0009] Therefore, during the relative rotation of the shaft connector and the sleeve connector, the damping force formed by the two first decays and then increases, thereby better controlling the attenuation of the torque and extending the service life of the rotating shaft.

[0010] In a possible design, the interference between the shaft connector and the sleeve connector in the first mating state is greater than the interference between the shaft connector and the sleeve connector in the second mating state.

[0011] In the embodiment of the present application, the raised structure is the area with a large interference after the shaft connection and the sleeve connection are sleeved. When the shaft connection and the sleeve connection rotate relative to each other, the area with a large interference is worn first. When the area with a large interference is worn to the same interference as other areas, the inner wall of the shaft connection contacts the outer wall of the sleeve connection, thereby increasing the contact area between the shaft connection and the sleeve connection, thereby increasing the friction force when the two rotate relative to each other, and thus the shaft connection and the sleeve connection can still provide a large damping force.

[0012] In one possible design, in the first mating state, the area where the shaft connection and the sleeve connection have an interference fit is a first mating area, and in the second mating state, the area where the shaft connection and the sleeve connection have an interference fit is a second mating area, and the mating area of ​​the first mating area is smaller than the mating area of ​​the second mating area.

[0013] In the embodiment of the present application, since the area of ​​the second mating region is larger than that of the first mating region, when the rotating shaft wears from the first mating state to the second mating state, the contact area between the shaft connector and the sleeve connector increases, thereby increasing the friction force when the two rotate relative to each other.

[0014] In one possible design, in the first mating state, the first mating area is worn during the relative rotation of the shaft connection and the sleeve connection. When the first mating area is worn to the same interference amount as other areas, the shaft connection and the sleeve connection are in the second mating state.

[0015] In an embodiment of the present application, when the rotating shaft is worn from the first mating state to the second mating state, although the interference between the shaft connector and the sleeve connector is reduced, the contact area between the two is increased, so that the shaft connector and the sleeve connector can still provide a large damping force, so that the electronic device can stop at a preset position after being opened.

[0016] In a possible design, along the axial direction of the rotating shaft, the total length of the protruding structure is L1, the sleeve length of the outer wall of the shaft connecting member and the inner wall of the sleeve connecting member is L0, and 0.4≤L1 / L0≤0.8.

[0017] In the embodiment of the present application, when 0.4≤L1 / L0≤0.8, the length of the protruding structure is moderate, which will not cause insufficient damping force of the rotating shaft in the first mating state, affecting the use of the electronic device, nor will it cause no obvious increase in the damping force of the rotating shaft in the second mating state.

[0018] In a possible design, the protruding structure is one or more annular bosses.

[0019] In the embodiment of the present application, when the protrusion structure is an annular boss structure, the annular boss can be located in the middle of the socket connection position between the shaft connection member and the socket connection member, that is, the above-mentioned first matching area is located in the middle, ensuring the stability of the shaft connection member and the socket connection member during relative rotation.

[0020] In a possible design, the sleeve connector is provided with a sleeve portion, and the shaft connector is provided with a shaft portion;

[0021] The annular boss comprises a first annular boss, the first annular boss is arranged on the outer peripheral wall of the shaft portion, and in the first mating state, the inner wall of the sleeve portion is interference-fitted with the first annular boss;

[0022] Alternatively, the annular boss includes a second annular boss, and the second annular boss is arranged on the inner circumferential wall of the sleeve portion, and in the first mating state, the outer wall of the shaft portion is interference fit with the second annular boss.

[0023] In the embodiment of the present application, the area with the largest interference between the sleeve and the shaft is the area where the inner wall of the sleeve contacts the first annular boss, or the area where the outer wall of the shaft is in contact with the second annular boss. When the interference formed by the first annular boss or the second annular boss wears to the same level as the interference in other areas, the shaft and the sleeve are in a second mating state, and the mating area of ​​the second mating area is greater than the mating area of ​​the first mating area, so that the contact area between the shaft and the sleeve is increased, thereby increasing the friction between the two when they rotate relative to each other.

[0024] In a possible design, the sleeve connector is provided with a sleeve portion, and the shaft connector is provided with a shaft portion;

[0025] The annular boss comprises a first annular boss and a second annular boss, wherein the first annular boss is arranged on the outer peripheral wall of the shaft portion, and the second annular boss is arranged on the inner peripheral wall of the sleeve portion;

[0026] The first annular boss and the second annular boss are distributed along the axial direction of the rotating shaft, or the first annular boss and the second annular boss are distributed along the radial direction of the rotating shaft.

[0027] In the embodiment of the present application, the area with the largest interference between the sleeve and the shaft is the area where the inner wall of the sleeve contacts the first annular boss, and the area where the outer wall of the shaft is in contact with the second annular boss. When the interference formed by the first annular boss and the second annular boss is worn to the same interference as that of other areas, the shaft and the sleeve are in the second mating state, and the mating area of ​​the second mating area is greater than the mating area of ​​the first mating area, so that the contact area between the shaft and the sleeve is increased, thereby increasing the friction force when the two rotate relative to each other.

[0028] In a possible design, the protruding structure includes a plurality of evenly distributed protruding points.

[0029] In the embodiment of the present application, the sum of the areas of the plurality of protrusions is smaller than the sleeve area of ​​the shaft connector and the sleeve connector, so that the mating area of ​​the first mating area is smaller than the mating area of ​​the second mating area. The contour of the protrusion can be one or more of a circle, an ellipse, a square, a polygon, etc.

[0030] In a possible design, the sleeve connector is provided with a sleeve portion, and the shaft connector is provided with a shaft portion;

[0031] The convex points include a plurality of first convex points, the plurality of first convex points are arranged on the outer peripheral wall of the shaft portion, and in the first mating state, the inner wall of the sleeve portion is interference-fitted with the plurality of first convex points;

[0032] Alternatively, the protrusions include a plurality of second protrusions, and the plurality of second protrusions are disposed on the inner circumferential wall of the sleeve portion, and in the first mating state, the outer wall of the shaft portion is interference-fitted with the plurality of second protrusions.

[0033] In the embodiment of the present application, the area with the largest interference between the sleeve and the shaft is the area where the inner wall of the sleeve contacts the first convex point, or the area where the outer wall of the shaft is in contact with the second convex point. When the interference formed by the first convex point or the second convex point wears to the same level as the interference in other areas, the shaft and the sleeve are in a second mating state, and the mating area of ​​the second mating area is greater than the mating area of ​​the first mating area, so that the contact area between the shaft and the sleeve is increased, thereby increasing the friction between the two when they rotate relative to each other.

[0034] In a possible design, the sleeve connector is provided with a sleeve portion, and the shaft connector is provided with a shaft portion;

[0035] The convex points include a plurality of first convex points and a plurality of second convex points, wherein the plurality of first convex points are arranged on the outer peripheral wall of the shaft portion, and the plurality of second convex points are arranged on the inner peripheral wall of the sleeve portion;

[0036] In the first mating state, the inner wall of the sleeve portion is in interference fit with the plurality of the first protrusions, and the outer wall of the shaft portion is in interference fit with the plurality of the second protrusions.

[0037] In the embodiment of the present application, the area with the largest interference between the sleeve and the shaft is the area where the inner wall of the sleeve contacts the first convex point, and the area where the outer wall of the shaft is in contact with the second convex point. When the interference formed by the first convex point and the second convex point wears to the same level as the interference in other areas, the shaft and the sleeve are in a second mating state, and the mating area of ​​the second mating area is greater than the mating area of ​​the first mating area, so that the contact area between the shaft and the sleeve is increased, thereby increasing the friction between the two when they rotate relative to each other.

[0038] In a possible design, the sleeve connector is provided with a telescopic opening, and the telescopic opening passes through the sleeve connector along the axial direction of the rotating shaft.

[0039] In the embodiment of the present application, the telescopic opening provides telescopic space for the shaft sleeve. When the shaft rod extends into the shaft sleeve, the external force presses the shaft sleeve to increase the opening of the telescopic opening, and the shaft sleeve deforms to increase the internal space so that the shaft rod can be smoothly inserted into the shaft sleeve. When the shaft rod is installed in place, the telescopic opening retracts due to the elastic force of the shaft sleeve, and the shaft sleeve tightly covers the shaft rod. The shaft sleeve and the shaft rod maintain a tight fit to ensure sufficient damping force between the two.

[0040] In a possible design, the sleeve connector further includes a first connecting portion connected to one end of the shaft sleeve portion;

[0041] The first connecting portion and the telescopic opening are arranged at two ends of the shaft sleeve portion along the radial direction of the rotating shaft.

[0042] In the embodiment of the present application, along the radial direction of the rotating shaft, the telescopic opening is roughly opposite to the first connecting part, so that the telescopic opening is as far away from the first connecting part as possible to reduce the pulling of the shaft sleeve part when the first connecting part is rotated by external force, causing the telescopic opening to expand and contract and affect the elastic-plastic properties of the shaft sleeve part.

[0043] An embodiment of the present application further provides an electronic device, which includes the rotating shaft described above.

[0044] In the embodiment of the present application, the rotating shaft has the characteristics of small size and stable damping force. Even in the limited installation space of ultra-thin electronic equipment, the torque design of the rotating shaft that first attenuates and then increases can provide sufficient damping force to the electronic device to ensure the positioning stability of the electronic device.

[0045] In a possible design, the electronic device includes a main body and a display part, one of the main body and the display part is connected to the shaft connection member, and the other is connected to the sleeve connection member;

[0046] When the shaft connection member and the sleeve connection member are in the first matching state, the shaft connection member and the sleeve connection member are interference-fitted at the position of the protruding structure, so that the main body and the display portion can stop at a preset angle;

[0047] When the shaft connection member and the sleeve connection member are in the second matching state, the outer wall of the shaft connection member and the inner wall of the sleeve connection member are interference-fitted, so that the main body and the display portion can stop at a preset angle.

[0048] In the embodiment of the present application, the electronic device may be a laptop computer. During the relative rotation of the shaft connector and the sleeve connector, the two are first in a first mating state, and in the first mating state, as the number of relative rotations of the shaft connector and the sleeve connector increases, the interference between the two gradually decreases, and the damping force provided gradually decreases. When the shaft connector and the sleeve connector switch from the first mating state to the second mating state, the mating area between the two increases, so that the damping force increases, so that the main body and the display part of the electronic device can still stop at the preset position.

[0049] In a possible design, the electronic device includes a first shell, a second shell and a flexible display screen, one of the first shell and the second shell is connected to the shaft connection member, and the other is connected to the sleeve connection member, and the flexible display screen covers the first shell, the rotating shaft and the second shell;

[0050] When the shaft connection member and the sleeve connection member are in the first matching state, the shaft connection member and the sleeve connection member are interference-fitted at the position of the protruding structure, so that the first shell and the second shell can stop at a preset angle;

[0051] When the shaft connection member and the sleeve connection member are in the second matching state, the outer wall of the shaft connection member and the inner wall of the sleeve connection member are interference-fitted, so that the first shell and the second shell can stop at a preset angle.

[0052] In the embodiment of the present application, the electronic device may be a folding tablet computer, a folding mobile phone or other electronic device. During the relative rotation of the shaft connector and the sleeve connector, the two are first in a first mating state, and in the first mating state, as the number of relative rotations of the shaft connector and the sleeve connector increases, the amount of interference between the two gradually decreases, and the damping force provided gradually decreases. When the shaft connector and the sleeve connector switch from the first mating state to the second mating state, the mating area of ​​the two increases, which increases the damping force, so that the first shell and the second shell of the electronic device can still stop at the preset position.

[0053] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of the structure of an electronic device provided by the present application in an embodiment;

[0055] Figure 2 for Figure 1 A schematic diagram of an electronic device in a closed state;

[0056] Figure 3 for Figure 1 A schematic diagram of an electronic device in an on-state;

[0057] Figure 4 This is a schematic structural diagram of a rotating shaft provided in the present application in one embodiment;

[0058] Figure 5 for Figure 4 A schematic diagram of the structure of the sleeve of the rotating shaft;

[0059] Figure 6 for Figure 4 A schematic diagram of the structure of the shaft connection of the rotating shaft;

[0060] Figure 7 A schematic diagram of the structure of the shaft connection provided in the present application in another embodiment;

[0061] Figure 8 A schematic diagram of the structure of the socket provided in the present application in another embodiment;

[0062] Fig. 9 A schematic diagram of the structure of the shaft connection provided in the present application in another embodiment;

[0063] Fig.10 This is a schematic structural diagram of the rotating shaft provided in the present application in another embodiment;

[0064] Fig.11 For along Fig.10 Schematic diagram of the cross section in the AA direction;

[0065] Fig.12 A schematic diagram of the structure of the shaft connection provided in the present application in another embodiment;

[0066] Fig.13 To adopt Fig.12 The socket shown is Figure 6 A cross-sectional view of a rotating shaft formed by sleeve connection of the shaft connectors shown;

[0067] Fig.14A schematic diagram of the structure of the shaft connection provided in the present application in another embodiment;

[0068] Fig.15 A schematic diagram of the structure of the shaft connection provided in the present application in another embodiment;

[0069] Fig.16 This is a schematic diagram of the structure of the electronic device provided by the present application in another embodiment;

[0070] Fig.17 for Fig.16 A schematic diagram of the structure of the rotating shaft assembly;

[0071] Fig.18 This is a schematic structural diagram of the rotating shaft provided in the present application in another embodiment;

[0072] Fig.19 for Fig.18 The enlarged schematic diagram of the middle B part;

[0073] Fig. 20 for Fig.18 A schematic structural diagram of a sleeve connector of a rotating shaft in one embodiment;

[0074] Fig.21 for Fig.18 A schematic structural diagram of a shaft connection member of a rotating shaft in one embodiment;

[0075] Fig. 22 for Fig. 20 Middle socket and Fig.21 Schematic diagram of the middle shaft connector fit;

[0076] Fig.23 for Fig. 22 A schematic cross-sectional view of an embodiment;

[0077] Fig.24 for Fig. 22 A schematic cross-sectional view of another embodiment.

[0078] Reference numerals:

[0079] 1-electronic device, 11-display part, 111-upper shell, 112-display screen, 12-main body, 121-lower shell, 122-keyboard area, 13-rotating shaft, 131-axle connection, 131a-axle rod, 131b-extension part, 131c-second connection part, 132-sleeve connection, 132a-axle sleeve, 132a1-telescopic opening, 132b-first connection part, 133-raised area, 133a-first convex point, 133b-second convex point, 133c-first annular boss, 133d-second annular boss, 133e-third annular boss 133f-fifth annular boss, 134-first shaft connection, 134a-third connection part, 134b-fourth connection part, 135-second shaft connection, 136-first sleeve connection, 137-second sleeve connection, 138-first clamping member, 138a-first clamping ring, 138b-second clamping ring, 139-second clamping member, 139a-third clamping ring, 139b-fourth clamping ring, 14-first shell, 15-second shell, 16-flexible display screen, 17-rotating shaft assembly, 171-support member, 172-first connecting plate, 173-second connecting plate;

[0080] A-axial, R-radial, C-circumferential.

[0081] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0082] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0083] In a specific embodiment, the present application is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0084] Electronic devices with a clamshell structure or a folding structure have a rotating shaft, and the rotating shaft is used for the folding or opening and closing function of the electronic device. Taking electronic devices such as laptop computers, netbooks, folding mobile phones, clamshell mobile phones, folding tablets, and clamshell personal digital assistants (PDAs) as examples, the parts of such electronic devices that need to be flipped or folded and rotated relative to each other are all connected by rotating shafts. In addition, there is a certain friction between the internal structures of the rotating shafts, so that the rotating shafts used in such electronic devices not only have the basic function of enabling the electronic device to rotate relative to each other to achieve the opening and closing function, but also, for electronic devices such as laptop computers and netbooks that can adjust the opening and closing angle according to actual needs, within the entire opening and closing angle range of the electronic device, the rotating shaft can also make the electronic device stably stop at any desired angle position.

[0085] For example, an electronic device includes folding parts that can rotate relative to each other, and adjacent folding parts are connected by a rotating shaft, and the rotating shaft can realize the relative rotation between adjacent folding parts, and the rotating shaft can control the adjacent folding parts to stop at any position within the opening and closing angle range. The two adjacent folding parts can be the main body and screen assembly of the electronic device, or can be two screen assemblies that can be folded relative to each other, etc.

[0086] Specifically, taking the electronic device as a laptop computer as an example, please refer to Figure 1 , Figure 1 The figure shows a schematic diagram of the structure of an electronic device 1, which includes a display unit 11 and a main body 12. The display unit 11 may include an upper shell 111 and a display screen 112, the display screen 112 is mounted on the upper shell 111, and the display area of ​​the display screen 112 is exposed outside the upper shell 111. The main body 12 may include a lower shell 121 and a mainboard, a battery, a fan and other components mounted on the lower shell 121 (not shown in the figure). The side of the lower shell 121 facing the display unit 11 is an operating surface, and a keyboard area 122 is provided on the operating surface, and a plurality of keys are arranged in the keyboard area 122. In addition, components such as a power button and an indicator light may also be provided on the operating surface (not shown in the figure).

[0087] Among them, Figure 1 As shown, the display portion 11 and the main body portion 12 are connected by a rotating shaft (not shown in the figure), and the rotating shaft can be a rotating shaft. The side of the display portion 11 and the main body portion 12 that is close to each other is the rotational connection side of the two, and the other side opposite to the rotational connection side is the opening and closing side of the two. The rotational connection sides of the display portion 11 and the main body portion 12 are driven by the rotating shaft 13 to rotate relative to each other, so that the opening and closing sides of the display portion 11 and the opening and closing sides of the main body portion 12 are moved away from or close to each other, so as to open or close the electronic device 1.

[0088] For example, the main body 12 of the electronic device 1 is placed on a support platform such as a desktop, and the main body 12 is supported on the desktop and fixed. The user can hold the display part 11 and apply a force to the display part 11 against the main body 12, so that the opening and closing side of the display part 11 moves away from the opening and closing side of the main body 12, so as to open the electronic device 1 and put the electronic device 1 in a position as shown in FIG. Figure 1 Alternatively, when the electronic device 1 is in the opened state, a force is applied to the display portion 11 toward the main body portion 12, so that the opening and closing side of the display portion 11 moves toward the opening and closing side of the main body portion 12, so as to close the electronic device 1, so that the electronic device 1 is in the state shown. Figure 2 Status shown.

[0089] When the user rotates the display unit 11, the shaft drives the display unit 11 to rotate relative to the main body 12 under the external force applied by the user. Once the external force applied by the user disappears, the display unit 11 can be stopped at the current position by relying on the damping force generated by the shaft itself, so that the current angle between the display unit 11 and the main body 12 is maintained. In this way, the user can stop applying the external force when the display unit 11 is rotated to a suitable angle according to actual needs, and rely on the damping generated by the shaft to keep the display unit 11 at the current position.

[0090] Taking the opening and closing angle range of the electronic device 1 as 0° to 120° as an example, when the angle between the display portion 11 and the main body portion 12 is 0°, Figure 2 As shown, the display unit 11 is buckled on the main body 12, and the display screen 112 is completely blocked by the main body 12. When the angle between the display unit 11 and the main body 12 is 120°, as shown in FIG. Figure 3 As shown, when the rotation limit of the display portion 11 is reached, even if an external force is applied, the display portion 11 cannot continue to rotate in a direction away from the main body portion 12. The rotation limit of the display portion 11 may be determined by a limiting structure on the display portion 11 or the main body portion 12, and this embodiment does not limit this.

[0091] Within the opening and closing angle range of the electronic device 1, the damping force generated by the shaft itself can make the display unit 11 stop at any position. For example, the display unit 11 stops at a position where the angle between it and the main body 12 is 30°, 60°, 90°, 120°, etc.

[0092] In addition, in order to ensure the stability of the rotational connection between the display unit 11 and the main body 12, two or more rotation shafts can be connected between the display unit 11 and the main body 12, and the rotation shafts are arranged at intervals along the extension direction of the rotational connection side of the display unit 11 and the main body 12.

[0093] The structure of the rotating shaft is described below in conjunction with the accompanying drawings. In order to more clearly describe the rotating shaft in this embodiment, the axial direction of the rotating shaft is defined as the A direction, the radial direction of the rotating shaft 13 is defined as the R direction, and the circumferential direction of the rotating shaft 13 is defined as the C direction.

[0094] like Figure 4The figure shows a schematic diagram of the structure of the rotating shaft 13 in one embodiment. The rotating shaft 13 includes a shaft connection 131 and a sleeve connection 132. The sleeve connection 132 is sleeved on the outer side of the shaft connection 131, and the two can rotate relative to each other. The shaft connection 131 and the sleeve connection 132 are respectively used for two structural members that need to rotate relative to each other to achieve the relative rotation of the two structural members. One of the shaft connection 131 and the sleeve connection 132 is connected to the display part 11 of the electronic device, and the other is connected to the main body 12 of the electronic device. The relative rotation between the shaft connection 131 and the sleeve connection 132 realizes the relative rotation between the display part 11 and the main body 12.

[0095] Specifically, Figure 5 The figure shows a schematic diagram of the structure of the sleeve connector 132 in a specific embodiment. The sleeve connector 132 includes a sleeve portion 132a and a first connecting portion 132b connected to each other. The first connecting portion 132b is connected to one side of the sleeve portion 132a along the radial direction R of the rotating shaft 13. The sleeve portion 132a is also provided with a telescopic opening 132a1, which extends to both ends of the sleeve portion 132a along the axial direction A of the rotating shaft 13.

[0096] The shaft sleeve portion 132a and the first connecting portion 132b may be integrally formed structures. Alternatively, the shaft sleeve portion 132a and the first connecting portion 132b may be formed separately and then fixedly connected, and the fixing method may be welding to ensure the stability of the connection between the two.

[0097] like Figure 6 The figure shows a schematic diagram of the structure of the shaft connection 131 in a specific embodiment, wherein the shaft connection 131 includes a shaft portion 131a, an extension portion 131b and a second connection portion 131c connected to each other. The extension portion 131b is a portion of the shaft portion 131a extending along the axial direction A of the rotating shaft 13, and the second connection portion 131c is connected to one side of the extension portion 131b along the radial direction R of the rotating shaft 13.

[0098] The shaft portion 131a, the extension portion 131b and the second connection portion 131c may be an integrally formed structure. Alternatively, the shaft portion 131a, the extension portion 131b and the second connection portion 131c may be formed separately and then fixedly connected. The fixing method may be welding fixing to ensure the stability of the connection between the three.

[0099] Please continue to refer to Figure 4When the shaft connection member 131 and the sleeve connection member 132 cooperate, the sleeve portion 132a can be sleeved on the outside of the shaft rod portion 131a, and the shaft rod portion 131a can rotate in the sleeve portion 132a, so as to realize the rotation connection between the shaft connection member 131 and the sleeve connection member 132. The first connection portion 132b and the second connection portion 131c are also used to connect with other structural members. For example, the sleeve connection member 132 is connected to the main body of the electronic device through the first connection portion 132b, and the shaft connection member 131 is connected to the display portion of the electronic device through the second connection portion 131c, so that the rotating shaft 13 is connected between the display portion 11 and the main body 12, and the display portion 11 is driven to open and close relative to the main body 12 by the rotation of the shaft connection member 131 relative to the sleeve connection member 132.

[0100] It should be noted that the shaft portion 131a of the shaft connector 131 and the sleeve portion 132a of the sleeve connector 132 are coaxially arranged, the axial direction A of the rotating shaft 13 refers to the direction in which the coaxial line of the shaft portion 131a and the sleeve portion 132a extends to both sides after the shaft portion 131a and the sleeve portion 132a are matched, and the radial direction R of the rotating shaft 13 refers to the direction of any diameter passing through the coaxial line of the shaft portion 131a and the sleeve portion 132a after the shaft portion 131a and the sleeve portion 132a are matched. And the rotation direction between the shaft portion 131a and the sleeve portion 132a is as follows: Figure 4 In the direction of the arrow shown.

[0101] The shaft portion 131a and the sleeve portion 132a can be connected by interference fit, that is, the outer diameter of the shaft portion 131a can be slightly larger than the inner diameter of the sleeve portion 132a, and by applying a certain force, the shaft portion 131a is pushed into the sleeve portion 132a, so that the shaft portion 131a and the sleeve portion 132a are tightly matched, and a large damping force is generated when the two rotate relative to each other. Therefore, a large external force is required to rotate the shaft connection 131 and the sleeve connection 132, and when the external force disappears, the shaft connection 131 and the sleeve connection 132 overcome the gravity of the structural parts connected to the two (such as the display part and the main body) due to the damping force, so that the shaft connection 131 and the sleeve connection 132 maintain the current position and do not rotate, and the structural parts connected to the two stop at the current position accordingly.

[0102] Specifically, the shaft sleeve portion 132a and the shaft rod portion 131a are both made of elastic-plastic materials, such as steel, iron, etc. In order to achieve the relative rotation of the shaft rod portion 131a and the shaft sleeve portion 132a after interference fit, please continue to refer to Figure 4The expansion opening 132a1 of the sleeve portion 132a provides a space for the sleeve portion 132a to deform elastically. When the shaft rod portion 131a extends into the sleeve portion 132a, the external force presses the sleeve portion 132a to increase the opening degree of the expansion opening 132a1. The sleeve portion 132a produces elastic deformation to increase its internal space, so that the shaft rod portion 131a can be smoothly inserted into the sleeve portion 132a. When the shaft rod portion 131a is installed in place, the expansion opening 132a1 shrinks due to the resilience of the sleeve portion 132a itself, and the sleeve portion 132a is tightly covered outside the shaft rod portion 131a. The sleeve portion 132a and the shaft rod portion 131a maintain a tight fit to ensure that there is sufficient damping force between the two.

[0103] The magnitude of the damping force between the shaft connector 131 and the sleeve connector 132 is related to the magnitude of the friction force between the two. When the magnitude of the extrusion force between the shaft connector 131 and the sleeve connector 132 is the same, the magnitude of the friction force between the two is related to the contact area between the two. That is, the larger the diameter of the shaft portion 131a and the sleeve portion 132a, the larger the contact area between the two, and the greater the damping force generated by the friction between the shaft portion 131a and the sleeve portion 132a. The smaller the diameter of the shaft portion 131a and the sleeve portion 132a, the smaller the contact area between the two, and the smaller the damping force generated by the friction between the shaft portion 131a and the sleeve portion 132a.

[0104] As the electronic device 1 gradually becomes thinner and lighter, the design space for the damping of the rotating shaft in the electronic device 1 is gradually reduced, and the diameters of the sleeve portion 132a of the sleeve 132 and the shaft portion 131a of the shaft connection 131 are getting smaller and smaller, resulting in a smaller contact area between the sleeve portion 132a of the sleeve 132 and the shaft portion 131a of the shaft connection 131, which gradually reduces the rotation damping force provided by the rotating shaft 13. In addition, as the number of times the electronic device 1 is opened and closed increases, wear occurs between the sleeve portion 132a of the sleeve 132 and the shaft portion 131a of the shaft connection 131, which may cause the damping force generated between the shaft portion 131a and the sleeve portion 132a to be insufficient to stably stop the electronic device 1 at a preset angle, affecting the user's opening and closing experience.

[0105] The embodiment of the present application solves the problem that the electronic device cannot stop at a preset angle due to the decrease in the damping force provided by the rotating shaft by changing the structure of the rotating shaft.

[0106] Specifically, at least one of the mutually socketed shaft portion and the shaft sleeve portion is provided with a protrusion structure, so that the shaft portion and the shaft sleeve portion are interference fit through the protrusion structure when they are socketed with each other, and the damping force is provided by the protrusion structure. The interference fit shaft portion and the shaft sleeve portion can provide a larger damping force, so that the main body and the display portion of the electronic device can stop at a preset position.

[0107] The raised structure is the area with large interference after the shaft portion and the sleeve portion are sleeved together. When the shaft portion and the sleeve portion rotate relative to each other, the area with large interference is worn first. When the area with large interference is worn to the same amount of interference as other areas, the outer wall of the shaft portion contacts the inner wall of the sleeve portion, increasing the contact area between the shaft portion and the sleeve portion, thereby increasing the friction force when the two rotate relative to each other, and then the shaft portion and the sleeve portion can still provide a large damping force, so that the main body and display portion of the electronic device can stop at a preset position.

[0108] The specific implementation of the protrusion structure is described in detail below.

[0109] In a specific embodiment, please refer to Figure 7 , Figure 7 FIG. 1 is a schematic diagram of the structure of the shaft connector in another specific embodiment. Taking the protrusion structure provided on the shaft rod as an example, the structure of the sleeve connector 132 matched with the shaft connector 131 can be Figure 5 When the sleeve 132 is sleeved on the shaft portion 131a of the shaft connector 131, the inner wall of the sleeve 132a is interference-fitted with the protruding structure of the shaft portion 131a, and the damping force is provided by the protruding structure.

[0110] The relative rotation process between the shaft connection member 131 and the sleeve connection member 132 may include a first mating state and a second mating state, and the two are first in the first mating state and then in the second mating state.

[0111] The first matching state is: the inner wall of the sleeve portion 132a and the protruding structure of the shaft rod portion 131a are in interference fit, and the area where the interference between the sleeve 132 and the shaft connector 131 is the largest is the area where the inner wall of the sleeve portion 132a contacts the protruding structure, and the area with the largest interference is the first matching area. The wear of the sleeve portion 132a and the shaft rod portion 131a during the relative rotation may be: the protruding structure is worn, so that the protruding structure is gradually thinned, so that the interference between the sleeve portion 132a and the shaft rod portion 131a is gradually reduced, and the damping force generated between the two is gradually reduced. Alternatively, the area where the sleeve portion 132a contacts the protruding structure is worn, so that the area of ​​the sleeve portion 132a is a groove structure, and the protruding structure is embedded in the groove structure, so that the interference between the sleeve portion 132a and the shaft rod portion 131a is gradually reduced, and the damping force generated between the two is gradually reduced. Alternatively, the protruding structure and the area where the protruding structure is in contact with the sleeve portion 132a are both worn, and while the protruding structure gradually becomes thinner, the area where the sleeve portion 132a and the protruding structure are in contact with the protruding structure is a groove structure, and the thinned protruding structure is embedded in the groove structure, so that the interference between the sleeve portion 132a and the shaft portion 131a gradually decreases, and the damping force generated between the two gradually decreases.

[0112] When the first mating area is worn to the same interference amount as that of other areas, the shaft portion 131a and the sleeve portion 132a are in a second mating state, and the second mating state is: the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a. At this time, the area where the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a is the second mating area. Since the mating area of ​​the second mating area is larger than the mating area of ​​the first mating area, the contact area between the shaft portion 131a and the sleeve portion 132a is increased, thereby increasing the friction force when the two rotate relative to each other, and then the shaft portion 131a and the sleeve portion 132a can still provide a large damping force, so that the main body and display portion of the electronic device can stop at a preset position.

[0113] In a specific embodiment, please continue to refer to Figure 7 The shaft portion 131a of the shaft connector 131 is provided with a plurality of first protrusions 133a. The plurality of first protrusions 133a can be provided on the outer peripheral wall of the shaft portion 131a. The plurality of first protrusions 133a are the protrusion structures described above.

[0114] The sum of the areas of the plurality of first protrusions 133a is smaller than the side area of ​​the shaft portion 131a, so that the mating area of ​​the first mating region is smaller than the mating area of ​​the second mating region.

[0115] The plurality of first protrusions 133a may be evenly distributed on the outer peripheral wall of the shaft portion 131a, or the plurality of first protrusions 133a may be concentratedly distributed in the middle region of the outer peripheral wall of the shaft portion 131a.

[0116] In another specific embodiment, please refer to Figure 8 , Figure 8 1 is a schematic diagram of the structure of the sleeve in another specific embodiment. The sleeve portion 132a of the sleeve 132 is provided with a plurality of second protrusions 133b, which can be provided on the inner peripheral wall of the sleeve portion 132a, and the plurality of second protrusions 133b are the protrusion structures described above.

[0117] The structure of the shaft connection member 131 that matches the sleeve connection member 132 can be Figure 6The same structure. When the sleeve portion 132a of the sleeve 132 is sleeved on the shaft connector 131, the outer wall of the shaft portion 131a is interference fit with the second protrusion 133b of the sleeve 132a, and the damping force is provided by the second protrusion 133b. In the first mating state, the shaft portion 131a is interference fit with the second protrusion 133b of the sleeve 132a, and the area with the largest interference between the sleeve 132 and the shaft connector 131 is the area where the outer wall of the shaft portion 131a contacts the second protrusion 133b, and the area with the largest interference is the first mating area. When the protruding shaft portion 131a and the sleeve portion 132a rotate relative to each other, the area with a large interference amount is worn first. When the interference amount formed by the multiple second protruding points 133b is worn to the same as the interference amount in other areas, the shaft portion 131a and the sleeve portion 132a are in a second matching state. The second matching state is: the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a. At this time, the area where the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a is the second matching area. Since the matching area of ​​the second matching area is larger than the matching area of ​​the first matching area, the contact area between the shaft portion 131a and the sleeve portion 132a is increased, thereby increasing the friction force when the two rotate relative to each other, and then the shaft portion 131a and the sleeve portion 132a can still provide a large damping force, so that the main body and display portion of the electronic device can stop at a preset position.

[0118] The sum of the areas of the plurality of second protrusions 133b is smaller than the inner area of ​​the sleeve portion 132a, so that the mating area of ​​the first mating region is smaller than the mating area of ​​the second mating region.

[0119] The plurality of second protrusions 133b may be evenly distributed on the inner peripheral wall of the sleeve portion 132a, or the plurality of second protrusions 133b may be concentratedly distributed in the middle area of ​​the inner side wall of the sleeve portion 132a.

[0120] In another specific embodiment, please refer to Figure 7 and Figure 8 The shaft portion 131a of the shaft connector 131 may be provided with a plurality of first protrusions 133a, and the plurality of first protrusions 133a may be provided on the outer peripheral wall of the shaft portion 131a. The sleeve portion 132a of the sleeve connector 132 may be provided with a plurality of second protrusions 133b, and the plurality of second protrusions 133b may be provided on the inner peripheral wall of the sleeve portion 132a. The plurality of first protrusions 133a and the plurality of second protrusions 133b are the protruding structures described above.

[0121] When the sleeve portion 132a of the sleeve connector 132 is sleeved on the shaft portion 131a of the shaft connector 131, the inner wall of the sleeve portion 132a is interference-fitted with the first protrusion 133a of the shaft portion 131a, and the outer wall of the shaft portion 131a is interference-fitted with the second protrusion 133b of the sleeve portion 132a, and the damping force is provided by the first protrusion 133a and the second protrusion 133b. In the first mating state, the first protrusion 133a of the shaft portion 131a is interference-fitted with the second protrusion 133b of the sleeve portion 132a, and the area with the largest interference between the sleeve connector 132 and the shaft connector 131 is the area where the inner wall of the sleeve portion 132a contacts the first protrusion 133a, and the area where the outer wall of the shaft portion 131a contacts the second protrusion 133b. When the shaft portion 131a and the sleeve portion 132a rotate relative to each other, the area with a large interference amount is worn first. When the interference amount formed by the multiple first protrusions 133a and the multiple second protrusions 133b is worn to the same as the interference amount in other areas, the shaft portion 131a and the sleeve portion 132a are in a second matching state. The second matching state is: the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a. At this time, the area where the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a is the second matching area. Since the matching area of ​​the second matching area is larger than the matching area of ​​the first matching area, the contact area between the shaft portion 131a and the sleeve portion 132a is increased, thereby increasing the friction force when the two rotate relative to each other, and then the shaft portion 131a and the sleeve portion 132a can still provide a large damping force, so that the main body and display portion of the electronic device can stop at a preset position.

[0122] The sum of the areas of the first convex points 133a and the second convex points 133b is smaller than the sleeve area of ​​the shaft sleeve 132a and the shaft rod 131a, so that the matching area of ​​the first matching area is smaller than the matching area of ​​the second matching area.

[0123] It should be noted that, on the sleeve surface of the shaft portion 131a and the sleeve portion 132a, the first protrusion 133a and the second protrusion 133b may be arranged non-oppositely. That is, along the axial direction A of the rotating shaft 13, the first protrusion 133a and the second protrusion 133b are arranged alternately on the sleeve surface, or, a plurality of first protrusions 133a are concentrated on one side of the shaft portion 131a along the axial direction A of the rotating shaft 13, and a plurality of second protrusions 133b are concentrated on one side of the sleeve portion 132a along the axial direction A of the rotating shaft 13 away from the first protrusion 133a, so as to avoid collision and friction between the first protrusion 133a and the second protrusion 133b when the shaft connection 131 and the sleeve connection 132 rotate relative to each other, so that the shaft connection 131 and the sleeve connection 132 cannot rotate continuously and smoothly, affecting the user experience.

[0124] The first convex point 133a and the second convex point 133b mentioned above may be convex point structures, and the outlines of the first convex point 133a and the second convex point 133b may be one or more of circular, elliptical, square, polygonal, etc.

[0125] Please refer to Fig. 9 ,like Fig. 9 The structure diagram of the shaft connector 131 in another embodiment is shown. The shaft portion 131a of the shaft connector is provided with a first annular boss 133c, which can be provided on the outer peripheral wall of the shaft portion 131a. The first annular boss 133c is the convex structure described above.

[0126] The structure of the sleeve connector 132 matched with the shaft connector 131 can be Figure 5 The same structure. Fig.10 Shown Fig. 9 The shaft connection member 131 is Figure 5 The rotating shaft formed by the sleeve member 132 is shown as Fig.11 for Fig.10 Please refer to the schematic diagram of the section along the AA direction in Fig.10 and Fig.11 When the sleeve 132 is sleeved on the shaft portion 131a of the shaft connector 131, the inner wall of the sleeve 132a is interference-fitted with the first annular boss 133c of the shaft portion 131a, and the damping force is provided by the first annular boss 133c. In the first mating state, the sleeve 132a is interference-fitted with the first annular boss 133c of the shaft portion 131a, and the area with the largest interference between the sleeve 132 and the shaft connector 131 is the area where the inner wall of the sleeve 132a contacts the first annular boss 133c, and the area with the largest interference is the first mating area. When the shaft portion 131a and the sleeve 132a rotate relative to each other, the area with the largest interference is worn first. When the interference formed by the first annular boss 133c wears to the same level as the interference in other areas, the shaft portion 131a and the sleeve portion 132a are in a second mating state, and the second mating state is: the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a. At this time, the area where the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a is the second mating area. Since the mating area of ​​the second mating area is larger than the mating area of ​​the first mating area, the contact area between the shaft portion 131a and the sleeve portion 132a is increased, thereby increasing the friction force when the two rotate relative to each other, and then the shaft portion 131a and the sleeve portion 132a can still provide a larger damping force, so that the main body and display portion of the electronic device can stop at a preset position.

[0127] Along the axial direction A of the rotating shaft 13, the first annular boss 133c can be located in the middle of the shaft portion 131a, so that after the shaft portion 131a and the sleeve portion 132a are matched, the first annular boss 133c is located in the middle of the socket connection position of the shaft portion 131a and the sleeve portion 132a, that is, the above-mentioned first matching area is located in the middle, thereby ensuring the stability of the shaft portion 131a and the sleeve portion 132a during relative rotation.

[0128] Please continue to refer to Fig.10 , along the axial direction A of the rotating shaft 13, the length of the first annular boss 133c is L1, the sleeve length of the shaft portion 131a and the shaft sleeve portion 132a is L0, and the ratio of L1 to L0 satisfies: 0.4≤L1 / L0≤0.8. That is, the length of the first matching area is L1, and the length of the second matching area is L0.

[0129] For example, L1 / L0 can specifically be 0.4, 0.5, 0.6, 0.7, 0.8, etc.

[0130] In this embodiment, L1 / L0 should not be too large or too small. If L1 / L0 is too small, the length of the first annular boss 133c may be smaller, and the area with large interference in the socket connection position between the shaft portion 131a and the sleeve portion 132a is smaller, so that when the rotating shaft 13 is initially used, the first mating area in the first mating state is smaller, resulting in insufficient damping force generated by the sleeve portion 132a and the shaft portion 131a, and being unable to support the electronic device 1 to stop in the open position.

[0131] If L1 / L0 is too large, the length of the first annular boss 133c may be too long, and the first mating area in the first mating state is too large, that is, the area with large interference in the socket connection position of the shaft portion 131a and the shaft sleeve portion 132a is larger, and the remaining areas are smaller. When switching to the second mating state, the mating area of ​​the second mating area increases less than the mating area of ​​the first mating area, resulting in the increase in damping force when switching to the second mating state is not obvious.

[0132] Therefore, when 0.4≤L1 / L0≤0.8, the length of the first annular boss 133c is moderate, which will not cause insufficient damping force of the shaft 13 in the first mating state, affecting the use of the electronic device 1, nor will it cause no obvious increase in damping force of the shaft 13 in the second mating state.

[0133] Please refer to Fig.12 , Fig.12 The structure diagram of another embodiment of the sleeve 132 is shown. The sleeve portion 132a of the sleeve 132 is provided with a second annular boss 133d, and the second annular boss 133d can be provided on the inner peripheral wall of the sleeve portion 132a. The second annular boss is the convex structure described above.

[0134] The shaft connection member 131 that cooperates with the sleeve connection member 132 can be Figure 6 The same structure. Fig.13 Shown is the use of Fig.12 The socket 132 is shown with Figure 6 The cross-sectional view of the rotating shaft formed by the sleeve connection of the shaft connection member 131 is shown. When the sleeve portion 132a of the sleeve connection member 132 is sleeved on the shaft connection member 131, the outer wall of the shaft portion 131a is interference-fitted with the second annular boss 133d of the sleeve portion 132a, and the damping force is provided by the second annular boss 133d. In the first mating state, the shaft portion 131a is interference-fitted with the second annular boss 133d of the sleeve portion 132a, and the area with the largest amount of interference between the sleeve connection member 132 and the shaft connection member 131 is the area where the outer wall of the shaft portion 131a contacts the second annular boss 133d, and the area with the largest amount of interference is the first mating area. When the shaft portion 131a and the sleeve portion 132a rotate relative to each other, the area with a large interference amount is worn first. When the interference amount formed by the second annular boss 133d is worn to the same as the interference amount in other areas, the shaft portion 131a and the sleeve portion 132a are in a second matching state. The second matching state is: the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a. At this time, the area where the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a is the second matching area. Since the matching area of ​​the second matching area is larger than the matching area of ​​the first matching area, the contact area between the shaft portion 131a and the sleeve portion 132a is increased, thereby increasing the friction force when the two rotate relative to each other, and then the shaft portion 131a and the sleeve portion 132a can still provide a large damping force, so that the main body and display portion of the electronic device can stop at a preset position.

[0135] Along the axial direction A of the rotating shaft 13, the second annular boss 133d can be located in the middle of the sleeve portion 132a, so that after the shaft portion 131a and the sleeve portion 132a are matched, the second annular boss 133d is located in the middle of the socket connection position of the shaft portion 131a and the sleeve portion 132a, that is, the above-mentioned first matching area is located in the middle, thereby ensuring the stability of the shaft portion 131a and the sleeve portion 132a during relative rotation.

[0136] Among them, the ratio of the length of the second annular boss 133d to the sleeve length of the shaft portion 131a and the shaft sleeve portion 132a can refer to the ratio of the length of the first annular boss 133c to the sleeve length of the shaft portion 131a and the shaft sleeve portion 132a mentioned above, and this embodiment will not be repeated here.

[0137] In another specific embodiment, please refer to Fig. 9 and Fig.12The shaft portion 131a of the shaft connecting member 131 is provided with a first annular boss 133c, and the first annular boss 133c can be set on the outer peripheral wall of the shaft portion 131a. The sleeve portion 132a of the sleeve connecting member 132 is provided with a second annular boss 133d, and the second annular boss 133d can be set on the inner peripheral wall of the sleeve portion 132a. The first annular boss 133c and the second annular boss 133d are the protruding structures described above.

[0138] When the sleeve portion 132a of the sleeve connector 132 is sleeved on the shaft portion 131a of the shaft connector 131, the sleeve portion 132a and the shaft portion 131a are interference fit, and the damping force is provided by the first annular boss 133c and the second annular boss 133d. In the first matching state, the sleeve portion 132a and the first annular boss 133c of the shaft portion 131a are interference fit, and the shaft portion 131a and the second annular boss 133d of the sleeve portion 132a are interference fit. The area with the largest interference between the sleeve connector 132 and the shaft connector 131 is the area where the inner wall of the sleeve portion 132a contacts the first annular boss 133c, and the area where the outer wall of the shaft portion 131a contacts the second annular boss 133d. The area with the largest interference is the first matching area. When the shaft portion 131a and the sleeve portion 132a rotate relative to each other, the area with the largest interference is worn first. When the interference formed by the first annular boss 133c and the second annular boss 133d is worn to the same as the interference in other areas, the shaft portion 131a and the sleeve portion 132a are in a second mating state, and the second mating state is: the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a. At this time, the area where the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a is the second mating area. Since the mating area of ​​the second mating area is larger than the mating area of ​​the first mating area, the contact area between the shaft portion 131a and the sleeve portion 132a is increased, thereby increasing the friction force when the two rotate relative to each other, and then the shaft portion 131a and the sleeve portion 132a can still provide a large damping force, so that the main body and display portion of the electronic device can stop at a preset position.

[0139] The first annular boss 133c and the second annular boss 133d can be staggered along the axial direction A of the rotating shaft 13, and the sum of the length of the first annular boss 133c and the length of the second annular boss 133d is less than the sleeve length of the sleeve portion 132a and the shaft portion 131a, so that the matching area of ​​the first matching area is smaller than the matching area of ​​the second matching area. Alternatively, the first annular boss 133c and the second annular boss 133d can be overlapped along the radial direction R of the rotating shaft 13.

[0140] Please refer to Fig.14 , Fig.14FIG. 1 is a schematic diagram of the structure of the shaft connector 131 in another embodiment. The shaft portion 131a of the shaft connector 131 is provided with a plurality of third annular bosses 133e, which are evenly distributed on the outer peripheral wall of the shaft portion 131a along the axial direction A of the rotating shaft 13. The plurality of third annular bosses 133e are the convex structures described above. The damping effect generated by the third annular bosses 133e can be referred to above. Fig. 9 The contents of the illustrated embodiment will not be repeated in this embodiment.

[0141] Among them, the sum of the lengths of the multiple third annular bosses 133e along the axial direction A of the rotating shaft 13 is the length of the above-mentioned first matching area, and the ratio of the sum of the lengths of the multiple third annular bosses 133e along the axial direction A of the rotating shaft 13 to the sleeve length of the shaft portion 131a and the shaft sleeve portion 132a can refer to the ratio of the length of the first annular boss 133c to the sleeve length of the shaft portion 131a and the shaft sleeve portion 132a mentioned above, and this embodiment will not be repeated here.

[0142] In another embodiment, the sleeve portion of the sleeve is provided with a plurality of fourth annular bosses (not shown in the figure), and the plurality of fourth annular bosses are evenly distributed on the inner peripheral wall of the sleeve portion along the axial direction of the rotating shaft (similar to the structure of the third annular boss), and the plurality of fourth annular bosses are the convex structures described above. The damping effect generated by the fourth annular bosses and other contents can all be referred to above. Fig.12 The contents of the illustrated embodiment will not be repeated in this embodiment.

[0143] Among them, the sum of the axial lengths of the multiple fourth annular bosses along the rotating shaft is the length of the above-mentioned first matching area, and the ratio of the sum of the axial lengths of the multiple fourth annular bosses along the rotating shaft to the sleeve length of the shaft rod part and the shaft sleeve part can refer to the ratio of the length of the first annular boss to the sleeve length of the shaft rod part and the shaft sleeve part mentioned above, and this embodiment will not be repeated here.

[0144] In yet another embodiment, please refer to Fig.15 , Fig.15 The figure shows a schematic diagram of the structure of the shaft connection 131 in another embodiment. The shaft portion 131a of the shaft connection 131 is provided with a plurality of fifth annular bosses 133f, and the plurality of fifth annular bosses 133f are sequentially distributed on the outer peripheral wall of the shaft portion 131a along the radial direction R of the rotating shaft 13, and the area of ​​the fifth annular bosses 133f gradually decreases in the direction away from the axis of the shaft portion 131a. That is, the shaft portion 131a can be provided with a 2-step structure, a 3-step structure, etc. The plurality of fifth annular bosses are the convex structures described above. The damping effect produced by the fifth annular bosses and other contents can be referred to above. Fig. 9 The contents of the illustrated embodiment will not be repeated in this embodiment.

[0145] In another embodiment, the shaft portion of the sleeve is provided with a plurality of sixth annular bosses (not shown in the figure), and the plurality of sixth annular bosses are sequentially distributed on the inner circumferential wall of the sleeve portion along the radial direction of the rotating shaft, and the area of ​​the sixth annular bosses gradually decreases toward the direction close to the axis of the sleeve portion (similar to the structure of the fifth annular boss). That is, the sleeve portion can be provided with a 2-step structure, a 3-step structure, etc. The plurality of sixth annular bosses are the convex structures described above. The damping effect generated by the sixth annular bosses and other contents can all be referred to above. Fig.12 The contents of the illustrated embodiment will not be repeated in this embodiment.

[0146] As described above, in this embodiment, at least one of the shaft portion 131a of the shaft connector 131 and the shaft sleeve portion 132a of the sleeve connector 132 is provided with a protruding structure. During the relative rotation of the shaft connector and the sleeve connector, the two are first in a first matching state, and in the first matching state, as the number of relative rotations of the shaft connector and the sleeve connector increases, the interference between the two gradually decreases, and the damping force provided gradually decreases. When the shaft connector and the sleeve connector switch from the first matching state to the second matching state, the matching area of ​​the two increases, so that the damping force increases. Therefore, during the relative rotation of the shaft connector and the sleeve connector, the damping force formed by the two is a process of first attenuation and then increase, which better controls the attenuation of the torque and prolongs the service life of the rotating shaft 13.

[0147] In the above, the application of the rotating shaft provided in this embodiment to a laptop computer is described as an example. When the rotating shaft is applied to other devices, the structure of the rotating shaft may vary depending on the device. For example, when the rotating shaft is applied to an electronic device with a foldable flexible display screen, the rotating shaft may be a symmetrical structure. The following text embodiment will be described by taking the application of the rotating shaft in a foldable tablet computer / foldable mobile phone as an example.

[0148] like Fig.16 The figure shows a schematic diagram of the structure of an electronic device 1 (foldable tablet computer / foldable mobile phone), which includes a first housing 14, a second housing 15 and a flexible display screen 16 that can rotate relatively. The flexible display screen 16 is arranged on the first housing 14 and the second housing 15. The first housing 14 and the second housing 15 are connected in rotation via a shaft assembly (not shown in the figure). The shaft assembly is connected to the side where the first housing 14 and the second housing 15 are close to each other. The side where the first housing 14 and the second housing 15 are close to each other is the rotation connection side of the two, and the other side opposite to the rotation connection side is the opening and closing side of the two. The rotation connection sides of the first housing 14 and the second housing 15 are driven to rotate relatively by the shaft assembly, so that the opening and closing sides of the first housing 14 and the second housing 15 are moved away from or close to each other, so as to open or close the electronic device 1.

[0149] For example, the user can hold the electronic device 1, apply a force to the first shell 14 and / or the second shell 15 to move them closer to each other, so that the opening and closing side of the first shell 14 and / or the opening and closing side of the second shell 15 move in a direction closer to each other, so as to close the electronic device 1. Alternatively, the user can apply a force to the first shell 14 and / or the second shell 15 to move them away from each other, so that the opening and closing side of the first shell 14 and / or the opening and closing side of the second shell 15 move in a direction away from each other, so as to open the electronic device 1.

[0150] The hinge assembly includes a hinge. When the user rotates the first shell 14 and / or the second shell 15, the hinge drives the first shell 14 to rotate relative to the second shell 15 under the action of external force applied by the user. Once the external force applied by the user becomes small, the first shell 14 and the second shell 15 can be kept in their current positions by relying on the damping force generated by the hinge itself.

[0151] Taking the opening and closing angle range of the electronic device 1 as 0° to 360° as an example, when the angle between the first shell 14 and the second shell 15 is 0°, the first shell 14 and the second shell 15 are buckled on the side where the flexible display screen 16 is set. When the angle between the first shell 14 and the second shell 15 is 180°, the first shell 14 and the second shell 15 are arranged in parallel. When the angle between the first shell 14 and the second shell 15 is 360°, the shell of the first shell 14 and the shell of the second shell 15 are buckled.

[0152] Within the opening and closing angle range of the electronic device 1, the first housing 14 and the second housing 15 are stopped at any position by the damping force generated by the shaft itself. For example, the angle between the first housing 14 and the second housing 15 is 90°, 135°, 180°, 225°, 270°, 360°, etc.

[0153] In addition, in order to ensure the stability of the rotational connection between the first shell 14 and the second shell 15, two or more rotating shafts can be connected between the first shell 14 and the second shell 15, and the rotating shafts are arranged at intervals along the extending direction of the rotational connection side of the first shell 14 and the second shell 15. For details, please refer to Fig.17 , Fig.17 It is a schematic diagram of the structure of the rotating shaft assembly 17 in the electronic device 1, in which two rotating shafts 13 (in the dotted line frame in the figure) are arranged at intervals.

[0154] Please continue to refer to Fig.17The shaft assembly 17 further includes a support member 171, a first connecting plate 172 and a second connecting plate 173. The first connecting plate 172 and the second connecting plate 173 are respectively located on both sides of the support member 171 along the radial direction R of the shaft 13. The shaft 13 is disposed in the cavity of the support member 171 and is slidably connected to the first connecting plate 172 and the second connecting plate 173 respectively. One of the first connecting plate 172 and the second connecting plate 173 is used to connect to the first housing 14, and the other is used to connect to the second housing 15.

[0155] Specifically, Fig.18 The figure shows a schematic structural diagram of the rotating shaft 13 in another embodiment. The rotating shaft 13 is a symmetrical member, including two shaft connecting members, sleeve connecting members correspondingly sleeved on the outside of the two shaft connecting members, and two clamping members connecting the two shaft connecting members.

[0156] More specifically, the two shaft connections are respectively the first shaft connection 134 and the second shaft connection 135, the two sleeve connections are respectively the first sleeve connection 136 and the second sleeve connection 137, and the two clamping connections are respectively the first clamping connection 138 and the second clamping connection 139. The first sleeve connection 136 is sleeved on the outside of the first shaft connection 134 in an interference fit manner, and the first sleeve connection 136 and the first shaft connection 134 can rotate relative to each other, and the second sleeve connection 137 is sleeved on the outside of the second shaft connection 135 in an interference fit manner, and the second sleeve connection 137 and the second shaft connection 135 can rotate relative to each other. Please refer to Fig.19 , Fig.19 for Fig.18 In the enlarged view of the middle B part, the first clamping member 138 is provided with a first clamping ring 138a and a second clamping ring 138b, and the second clamping member 139 is provided with a third clamping ring 139a and a fourth clamping ring 139b (the structure can be referred to Fig.19 ), one end of the first shaft connection 134 and the second shaft connection 135 along the axial direction A of the rotating shaft 13 is respectively connected to the first retaining ring 138a and the second retaining ring 138b, and the other end is respectively connected to the third retaining ring 139a and the fourth retaining ring 139b, so as to realize the connection between the first shaft connection 134 and the second shaft connection 135, thereby realizing the fixing of the position of the first sleeve 136 and the second sleeve 137.

[0157] The structure of the first shaft connection 134 is the same as that of the second shaft connection 135 , and the structure of the second sleeve connection 137 is the same as that of the second sleeve connection 137 . The following will take the structure and cooperation of the first shaft connection 134 and the first sleeve connection 136 as an example for explanation.

[0158] Fig. 20The figure shows a schematic diagram of the structure of the first sleeve connector 136, which includes a sleeve portion 132a and a first connecting portion 132b connected to each other, wherein the first connecting portion 132b is connected to one side of the sleeve portion 132a along the radial direction R of the rotating shaft 13. The sleeve portion 132a is also provided with a telescopic opening 132a1, which extends to both ends of the sleeve portion 132a along the axial direction A of the rotating shaft 13.

[0159] The shaft sleeve portion 132a and the first connecting portion 132b may be integrally formed. Alternatively, the shaft sleeve portion 132a and the first connecting portion 132b may be formed separately and then fixedly connected. The fixing method may be welding to ensure the stability of the connection between the two.

[0160] Fig.21 The figure shows a schematic diagram of the structure of the first shaft connection member 134, which includes a shaft portion 131a, a third connection portion 134a and a fourth connection portion 134b connected to each other, and the third connection portion 134a, the shaft portion 131a and the fourth connection portion 134b are arranged along the axial direction A of the rotating shaft. The outer peripheral wall of the shaft portion 131a is provided with a first annular boss 133c.

[0161] The second connection part 131c, the shaft part 131a and the third connection part 134a may be an integrally formed structure. Alternatively, the third connection part 134a, the shaft part 131a and the fourth connection part 134b may be formed separately and then fixedly connected. The fixing method may be welding fixing to ensure the stability of the connection between the three.

[0162] Fig. 22 is a schematic diagram of the structure when the first shaft connection member 134 and the first sleeve connection member 136 cooperate with each other, Fig.23 for Fig. 22 Schematic diagram of the axial section along the shaft, please refer to Figure 22 to Figure 23When the first sleeve 136 is sleeved and connected to the shaft portion 131a of the first shaft connection 134, the inner wall of the sleeve 132a is interference-fitted with the first annular boss 133c of the shaft portion 131a, and the damping force is provided by the first annular boss 133c. In the first matching state, the sleeve 132a is interference-fitted with the first annular boss 133c of the shaft portion 131a, and the area with the largest interference between the sleeve 132 and the shaft connection 131 is the area where the inner wall of the sleeve 132a contacts the first annular boss 133c, and the area with the largest interference is the first matching area. When the shaft portion 131a and the sleeve 132a rotate relative to each other, the area with the large interference is worn first. When the interference formed by the first annular boss 133c wears to the same level as the interference in other areas, the shaft portion 131a and the sleeve portion 132a are in a second mating state, and the second mating state is that the outer wall of the sleeve portion 132a contacts the inner wall of the shaft portion 131a. At this time, the area where the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a is the second mating area. Since the mating area of ​​the second mating area is greater than the mating area of ​​the first mating area, the contact area between the shaft portion 131a and the sleeve portion 132a is increased, thereby increasing the friction force when the two rotate relative to each other, and thereby the shaft portion 131a of the first shaft connection 134 and the sleeve portion 132a of the first sleeve connection 136 can still provide a larger damping force. Similarly, when the shaft portion 131a of the second shaft connector 135 and the shaft sleeve portion 132a of the second sleeve connector 137 are converted from the first matching state to the second matching state, the two can still provide a large damping force to stop the first shell and the second shell of the electronic device at a preset position.

[0163] Along the axial direction A of the rotating shaft 13, the first annular boss 133c can be located in the middle of the shaft portion 131a, so that after the shaft portion 131a and the sleeve portion 132a are matched, the first annular boss 133c is located in the middle of the socket connection position of the shaft portion 131a and the sleeve portion 132a, that is, the above-mentioned first matching area is located in the middle, thereby ensuring the stability of the shaft portion 131a and the sleeve portion 132a during relative rotation.

[0164] Of course, the outer peripheral wall of the shaft portion 131a of the first shaft connector 134 can also be configured as follows: Figure 7 , Fig.14 , Fig.15 The specific contents of the protrusion structure in the illustrated embodiment can be referred to above, and the present embodiment will not be described in detail here.

[0165] In another embodiment, please refer to Fig.24 , Fig.24The cross-sectional view of the rotating shaft in another embodiment is shown in FIG. 1 , wherein the sleeve portion 132a of the first sleeve 136 is provided with a second annular boss 133d, and the second annular boss 133d can be provided on the inner circumferential wall of the sleeve portion 132a. When the sleeve portion 132a of the first sleeve 136 is sleeved on the first shaft connector 134, the outer wall of the shaft portion 131a is interference-fitted with the second annular boss 133d of the sleeve portion 132a, and the damping force is provided by the second annular boss 133d. In the first mating state, the shaft portion 131a is interference-fitted with the second annular boss 133d of the sleeve portion 132a, and the area with the largest amount of interference between the sleeve 132 and the shaft connector 131 is the area where the outer wall of the shaft portion 131a contacts the second annular boss 133d, and the area with the largest amount of interference is the first mating area. When the shaft portion 131a and the sleeve portion 132a rotate relative to each other, the area with a large interference amount is worn first. When the interference amount formed by the second annular boss 133d is worn to the same as the interference amount in other areas, the shaft portion 131a and the sleeve portion 132a are in a second matching state. The second matching state is: the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a. At this time, the area where the outer wall of the shaft portion 131a contacts the inner wall of the sleeve portion 132a is the second matching area. Since the matching area of ​​the second matching area is larger than the matching area of ​​the first matching area, the contact area between the shaft portion 131a and the sleeve portion 132a is increased, thereby increasing the friction force when the two rotate relative to each other, and then the shaft portion 131a and the sleeve portion 132a can still provide a larger damping force. Similarly, when the shaft portion 131a of the second shaft connector 135 and the shaft sleeve portion 132a of the second sleeve connector 137 are converted from the first matching state to the second matching state, the two can still provide a large damping force to stop the first shell and the second shell of the electronic device at the preset position. Fig.12 The embodiment shown is not described in detail here.

[0166] Of course, the inner peripheral wall of the shaft sleeve portion 132a of the first sleeve connector 136 can also be configured as follows: Figure 8 The specific contents of the protrusion structure in the illustrated embodiment can be referred to above, and the present embodiment will not be described in detail here.

[0167] Please continue to refer to Figure 20 to Figure 22 The first connecting portion 132b, the third connecting portion 134a and the fourth connecting portion 134b are also used to connect with other structural members. Fig.17 The first connection portion 132b can be connected to the first connection plate 172, that is, the first connection portion 132b can be connected to the first shell (or the second shell) through the first connection plate 172. Fig.18The third connecting portion 134a and the fourth connecting portion 134b can be connected to other structural members in the rotating shaft assembly 17 through the clamping member (the first clamping ring 138a of the first clamping member 138 and the third clamping ring 139a of the second clamping member 139). Therefore, the first housing 14 can be driven to rotate relative to the rotating shaft assembly 17 by the rotation of the first sleeve 136 relative to the first shaft assembly 134. Similarly, the second housing 15 can be rotated relative to the rotating shaft assembly 17, thereby realizing the opening and closing of the first housing 14 and the second housing 15.

[0168] It should be noted that, during the relative opening and closing process, the first shell and the second shell can also move away from or towards each other to meet the bending shape of the flexible display screen. The specific structure can refer to the existing structure and is not limited in this embodiment.

[0169] Furthermore, the sleeve portion 132a and the shaft portion 131a are both made of elastic-plastic materials, such as steel, iron, etc. To achieve the relative rotation of the shaft portion 131a and the sleeve portion 132a after interference fit, please continue to refer to Fig.17 The telescopic opening 132a1 can provide telescopic space for the shaft sleeve 132a. When the shaft rod 131a extends into the shaft sleeve 132a, the external force presses the shaft sleeve 132a to increase the opening degree of the telescopic opening 132a1. The shaft sleeve 132a is deformed to increase the internal space, so that the shaft rod 131a can be smoothly inserted into the shaft sleeve 132a. When the shaft rod 131a is installed in place, the telescopic opening 132a1 is retracted by the elastic force of the shaft sleeve 132a itself, and the shaft sleeve 132a is tightly covered outside the shaft rod 131a. The shaft sleeve 132a and the shaft rod 131a maintain a tight fit to ensure that there is sufficient damping force between the two.

[0170] Please continue to refer to Fig. 22 Along the radial direction R of the rotating shaft 13, the telescopic opening 132a1 is roughly opposite to the first connecting portion 132b, so that the telescopic opening 132a1 is as far away from the first connecting portion 132b as possible to reduce the pulling of the shaft sleeve portion 132a when the first connecting portion 132b is rotated by an external force, causing the telescopic opening 132a1 to expand and contract and affect the elastic-plastic properties of the shaft sleeve portion 132a.

[0171] In the above embodiments, the rotating shaft 13 has the characteristics of small size and stable damping force. Even in the limited installation space of the ultra-thin electronic device 1, the torque design of the rotating shaft 13 that first attenuates and then increases can provide sufficient damping force for the electronic device 1 to ensure the positioning stability of the electronic device 1.

[0172] In practical applications, in addition to the above-mentioned electronic device 1, the shaft 13 can also be used in other scenarios that require a stop function. For example, the shaft 13 can be used in sliding doors, folding machine shafts, other accessory shaft scenarios, etc. This embodiment is not limited here.

[0173] The same or similar parts between the various embodiments in this specification can be referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple.

[0174] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the embodiment of the present application should be included in the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiment of the present application should be based on the protection scope of the claims.

Claims

1. A rotating shaft, characterized in that: The rotating shaft comprises a shaft connecting member and a sleeve connecting member, wherein the sleeve connecting member is sleeved on the outer side of the shaft connecting member, and the two can rotate relative to each other; At least one of the outer wall of the shaft connection member and the inner wall of the sleeve connection member is provided with a protruding structure, and the shaft connection member and the sleeve connection member have at least a first matching state and a second matching state, and in the first matching state, the shaft connection member and the sleeve connection member are interference-fitted at the position of the protruding structure, so that the shaft connection member and the sleeve connection member can stop at a preset position; In the second mating state, the outer wall of the shaft connector and the inner wall of the sleeve connector are interference-fitted, so that the shaft connector and the sleeve connector can stop at a preset position; In the first matching state, the area where the shaft connection member and the sleeve connection member are in interference fit is the first matching area, and in the second matching state, the area where the shaft connection member and the sleeve connection member are in interference fit is the second matching area, and the matching area of ​​the first matching area is smaller than the matching area of ​​the second matching area; In the first mating state, during the relative rotation of the shaft connection and the sleeve connection, the first mating area is worn. When the first mating area is worn to the same interference amount as other areas, the shaft connection and the sleeve connection are in the second mating state.

2. The rotating shaft according to claim 1, characterized in that: The interference between the shaft connector and the sleeve connector in the first fitting state is greater than the interference between the shaft connector and the sleeve connector in the second fitting state.

3. The rotating shaft according to any one of claims 1 to 2, characterized in that: Along the axial direction of the rotating shaft, the total length of the protruding structure is L1, and the sleeve length of the outer wall of the shaft connecting member and the inner wall of the sleeve connecting member is L0, 0.4≤L1 / L0≤0.

8.

4. The rotating shaft according to any one of claims 1 to 2, characterized in that: The protruding structure is one or more annular bosses.

5. The rotating shaft according to claim 4, characterized in that: The sleeve connector is provided with a sleeve portion, and the shaft connector is provided with a shaft portion; The annular boss comprises a first annular boss, the first annular boss is arranged on the outer peripheral wall of the shaft portion, and in the first mating state, the inner wall of the sleeve portion is interference-fitted with the first annular boss; Alternatively, the annular boss includes a second annular boss, and the second annular boss is arranged on the inner circumferential wall of the sleeve portion, and in the first mating state, the outer wall of the shaft portion is interference fit with the second annular boss.

6. The rotating shaft according to claim 4, characterized in that: The sleeve connector is provided with a sleeve portion, and the shaft connector is provided with a shaft portion; The annular boss comprises a first annular boss and a second annular boss, wherein the first annular boss is arranged on the outer peripheral wall of the shaft portion, and the second annular boss is arranged on the inner peripheral wall of the sleeve portion; The first annular boss and the second annular boss are distributed along the axial direction of the rotating shaft, or the first annular boss and the second annular boss are distributed along the radial direction of the rotating shaft.

7. The rotating shaft according to any one of claims 1 to 2, characterized in that: The protruding structure includes a plurality of evenly distributed protruding points.

8. The rotating shaft according to claim 7, characterized in that: The sleeve connector is provided with a sleeve portion, and the shaft connector is provided with a shaft portion; The convex points include a plurality of first convex points, the plurality of first convex points are arranged on the outer peripheral wall of the shaft portion, and in the first mating state, the inner wall of the sleeve portion is interference-fitted with the plurality of first convex points; Alternatively, the protrusions include a plurality of second protrusions, and the plurality of second protrusions are disposed on the inner circumferential wall of the sleeve portion, and in the first mating state, the outer wall of the shaft portion is interference-fitted with the plurality of second protrusions.

9. The rotating shaft according to claim 7, characterized in that: The sleeve connector is provided with a sleeve portion, and the shaft connector is provided with a shaft portion; The convex points include a plurality of first convex points and a plurality of second convex points, wherein the plurality of first convex points are arranged on the outer peripheral wall of the shaft portion, and the plurality of second convex points are arranged on the inner peripheral wall of the sleeve portion; In the first mating state, the inner wall of the sleeve portion is in interference fit with the plurality of the first protrusions, and the outer wall of the shaft portion is in interference fit with the plurality of the second protrusions.

10. The rotating shaft according to any one of claims 5, 6, 8 and 9, characterized in that: The sleeve connector is provided with a telescopic opening, and the telescopic opening penetrates the sleeve connector along the axial direction of the rotating shaft.

11. The rotating shaft according to claim 10, characterized in that: The sleeve connector also includes a first connecting portion connected to one end of the shaft sleeve portion; The first connecting portion and the telescopic opening are arranged at two ends of the shaft sleeve portion along the radial direction of the rotating shaft.

12. An electronic device, characterized in that: The electronic device comprises the rotating shaft according to any one of claims 1 to 11.

13. The electronic device according to claim 12, characterized in that: The electronic device comprises a main body and a display part, one of the main body and the display part is connected to the shaft connection member, and the other is connected to the sleeve connection member; When the shaft connection member and the sleeve connection member are in the first matching state, the shaft connection member and the sleeve connection member are interference-fitted at the position of the protruding structure, so that the main body and the display portion can stop at a preset angle; When the shaft connection member and the sleeve connection member are in the second matching state, the outer wall of the shaft connection member and the inner wall of the sleeve connection member are interference-fitted, so that the main body and the display portion can stop at a preset angle.

14. The electronic device according to claim 13, characterized in that: The electronic device comprises a first housing, a second housing and a flexible display screen, wherein one of the first housing and the second housing is connected to the shaft connection member, and the other is connected to the sleeve connection member, and the flexible display screen covers the first housing, the rotating shaft and the second housing; When the shaft connection member and the sleeve connection member are in the first matching state, the shaft connection member and the sleeve connection member are interference-fitted at the position of the protruding structure, so that the first shell and the second shell can stop at a preset angle; When the shaft connection member and the sleeve connection member are in the second matching state, the outer wall of the shaft connection member and the inner wall of the sleeve connection member are interference-fitted, so that the first shell and the second shell can stop at a preset angle.

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