Rotating shaft assembly and electronic equipment

Abstract

The rotating shaft assembly comprises a base, a rotating shaft, a decorating part and a fixing part, a through hole is formed in the base, the rotating shaft is rotationally arranged on the base, the decorating part is provided with a connecting part, the decorating part is arranged on the outer side of the base and shields the base and the rotating shaft, and the connecting part extends into the through hole. The fixing part comprises a fixing rod and a fixing cap, the fixing cap is connected to the fixing rod, the fixing rod is connected with the connecting part, the surface, facing the decorating part, of the fixing cap comprises a first area and a second area, the second area surrounds the first area, the first area corresponds to the connecting part, and the second area abuts against the base. According to the rotating shaft assembly, the through hole is formed in the base, the connecting part arranged on the decorating part can extend into the through hole, the fixing cap of the fixing part presses the base against the decorating part, and the base does not need to be lapped on the decorating part for locking, so that the size of the rotating shaft assembly in the thickness direction can be reduced, and the electronic equipment is lighter and thinner. In addition, the embodiment of the invention further provides electronic equipment.

Description

Technical Field

[0001] The present application relates to the technical field of foldable electronic devices, and in particular to a hinge assembly and an electronic device. Background Art

[0002] With the development of communication technology, people use mobile electronic devices such as mobile phones and tablet computers more widely in their daily lives. In order to improve the portability of electronic devices, foldable electronic devices have also emerged. Such foldable electronic devices can be unfolded when in use and folded and stored when not in use, making them easy to carry.

[0003] Since foldable electronic devices require the use of a hinge assembly, existing hinge assemblies are usually in the form of a built-in hinge, and decorative parts need to be provided on the outside to cover the hinge structure. When fixing, the decorative parts need to be fixed together with the hinge base, which causes the entire hinge assembly to be too large in size in the thickness direction, which is not conducive to the overall lightweight design of the electronic device. Summary of the invention

[0004] The purpose of the present application is to provide a hinge assembly and an electronic device to at least partially solve the above technical problems.

[0005] In a first aspect, an embodiment of the present application provides a shaft assembly, including a base, a shaft, a decorative member, and a fixing member, wherein the base is provided with a through hole, the shaft is rotatably disposed on the base, the decorative member is provided with a connecting portion, the decorative member is disposed on the outside of the base and shields the base and the shaft, and the connecting portion extends into the through hole. The fixing member includes a fixing rod and a fixing cap, the fixing cap is connected to the fixing rod, the fixing rod is connected to the connecting portion, and the surface of the fixing cap facing the decorative member includes a first area and a second area, the second area surrounds the outside of the first area, the first area corresponds to the connecting portion, and the second area presses against the base.

[0006] In a second aspect, an embodiment of the present application provides an electronic device, comprising the above-mentioned hinge assembly, a first frame body, a second frame body and a display screen, wherein the first frame body and the second frame body are connected to two sides of the hinge assembly and can be folded or unfolded relative to each other, and the display screen is arranged on the first frame body and the second frame body.

[0007] The hinge assembly and electronic device provided in the embodiments of the present application are configured with a through hole on the base, and the connecting portion provided on the decorative piece can extend into the through hole. The fixing cap of the fixing piece presses the base against the decorative piece, and there is no need to overlap the base on the decorative piece for locking. Therefore, the size of the entire hinge assembly in the thickness direction can be reduced, thereby making the electronic device thinner and lighter.

[0008] These and other aspects of the present application will become more clearly understood in the description of the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 It is a structural schematic diagram of an electronic device in an unfolded state proposed in an embodiment of the present application.

[0011] Figure 2 yes Figure 1 A schematic diagram of the structure of an electronic device in a folded state is shown.

[0012] Figure 3 It is a schematic diagram of the assembly state of a rotating shaft assembly in an electronic device proposed in an embodiment of the present application.

[0013] Figure 4 It is a schematic diagram of the structure of a rotating shaft assembly in an electronic device proposed in an embodiment of the present application.

[0014] Figure 5 yes Figure 4 Cross-sectional structure diagram along line AA.

[0015] Figure 6 It is a schematic diagram of the structure of a decorative component in a shaft assembly proposed in an embodiment of the present application.

[0016] Figure 7 yes Figure 4 Partial cross-sectional structure diagram along line BB.

[0017] Figure 8 It is a schematic diagram of the partial assembly structure of another decorative part in a shaft assembly proposed in the embodiment.

[0018] Fig. 9 It is a schematic diagram of the partial assembly structure of another decorative part in a shaft assembly proposed in the embodiment. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] Since foldable electronic devices require the use of a hinge assembly, existing hinge assemblies are usually in the form of a built-in hinge, and decorative parts need to be provided on the outside to cover the hinge structure. When fixing, the hinge base needs to overlap the screw hole of the decorative part, and the hinge base and the decorative part are fixed together by screws. In this way, the thickness of the hinge base and the decorative part overlap at the connection, resulting in the entire hinge assembly being too large in the thickness direction, which is not conducive to the overall lightweight design of the electronic device.

[0021] Based on this, the inventor of the present application has proposed a hinge assembly electronic device after long-term research, which can reduce the thickness of the hinge assembly.

[0022] The content of this application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, this embodiment provides an electronic device 10. The electronic device 10 in this application can be a mobile phone or a smart phone (for example, a phone based on iPhone TM, a phone based on Android TM), a portable gaming device (for example, Nintendo DS TM, PlayStation Portable TM, Gameboy Advance TM, iPhone TM), a laptop, a PDA, a portable Internet device, a music player, and a data storage device, other handheld devices, etc. The electronic device 10 can also be other wearable devices.

[0024] Please also read Figure 1 and Figure 2 This embodiment provides an electronic device 10, which is foldable. Figure 1 The electronic device 10 is shown in the unfolded state. Figure 2 The electronic device 10 is shown in a folded state. The electronic device 10 provided in this embodiment is described by taking a mobile phone as an example.

[0025] The electronic device 10 may further include a display screen 30, a battery 50, etc., and the mainboard 40 and the battery 50 are both disposed inside the electronic device 10. The electronic device 10 may also be provided with a front camera (not shown), which is disposed on one side of the electronic device 10 where the display screen 30 is disposed.

[0026] Please continue reading Figure 1 and Figure 2The electronic device 10 is foldable. Specifically, the electronic device 10 includes a first frame 100, a second frame 200, and a hinge assembly 300. The hinge assembly 300 is connected between the first frame 100 and the second frame 200. The first frame 100 is folded or unfolded relative to the second frame 200 through the hinge assembly 300. The folding means that the first frame 100 and the second frame 200 are stacked in an overlapping posture. During the relative folding of the first frame 100 and the second frame 200, the hinge assembly 300 may be bent. In some embodiments, the first frame 100 and the second frame 200 are axially symmetrical along the hinge assembly 300, that is, when the first frame 100 and the second frame 200 are in the folded state, the first frame 100 and the second frame 200 can completely overlap, that is, the areas of the first frame 100 and the second frame 200 are approximately equal. In some other implementations, the first frame body 100 and the second frame body 200 may not completely overlap when in the folded state. In this case, the areas of the first frame body 100 and the second frame body 200 may not be equal, which is not limited in this embodiment.

[0027] The first frame 100 has a first side and a second side opposite to the first side, wherein the first side and the second side are stacked along the thickness direction of the first frame 100. In some embodiments, the first frame 100 may include a middle frame and a back cover, the back cover is mounted on the middle frame to form a cavity, and the back cover may be assembled with the middle frame by bonding or clamping, and in some embodiments, the back cover may be made of glass, ceramic, plastic, metal, or other materials.

[0028] The second frame 200 has a third side and a fourth side opposite to the third side, wherein the third side and the fourth side are stacked along the thickness direction of the second frame 200. In some embodiments, the second frame 200 can also be composed of a middle frame and a back cover, the back cover is installed on the middle frame to form a cavity, and the back cover can be assembled with the middle frame by bonding or clamping. In some embodiments, the back cover can be made of glass, ceramic, plastic, metal, etc. When the first frame 100 and the second frame 200 are in a flattened state, the first side can be flush with the third side, and the second side can be flush with the fourth side.

[0029] In one embodiment, the display screen 30 may be a foldable flexible display screen, which is continuously assembled on the first frame 100 and the second frame 200. When the first frame 100 and the second frame 200 are folded, the display screen 30 is folded accordingly. It is understandable that when the first frame 100 and the second frame 200 are in a relatively folded state, the display screen 30 may be located on the inside and not exposed, that is, the electronic device 10 is an inward folding electronic device at this time, and the display screen 30 may also be located on the outside and exposed on the surface of the electronic device 10, that is, the electronic device 10 is an outward folding electronic device at this time.

[0030] In another embodiment, the display screen 30 may be two, and the two display screens 30 are respectively arranged on the first frame 100 and the second frame 200. In this case, the display screen 30 may use an LCD (Liquid Crystal Display) screen for displaying information, and the LCD screen may be a TFT (Thin Film Transistor) screen or an IPS (In-Plane Switching) screen or an SLCD (Splice Liquid Crystal Display) screen. In other embodiments, the display screen 30 may use an OLED (Organic Light-Emitting Diode) screen for displaying information, and the OLED screen may be an AMOLED (Active Matrix Organic Light Emitting Diode) screen or a Super AMOLED (Super Active Matrix Organic Light Emitting Diode) screen or a SuperAMOLED Plus (Super Active Matrix Organic Light Emitting Diode Plus, Magic Screen) screen, which will not be described in detail here.

[0031] In addition, the electronic device 10 may further include a secondary screen (not shown), which is arranged in the first frame 110 or the second frame 120 and is located on the side opposite to the display screen 30. The secondary screen may be one or more, and this embodiment does not limit this.

[0032] Figure 4 The structure of a rotating shaft assembly 300 is shown. Figure 5 Shows Figure 4 Please refer to the cross-sectional structure of the central shaft assembly 300 along the AA line. Figure 4 and Figure 5 The hinge assembly 300 includes a base 320, a hinge 310, and rotating parts 330 arranged on both sides of the base 320, wherein the rotating parts 330 arranged on both sides of the base 320 are respectively used to connect the first frame 100 and the second frame 200, the hinge 310 is rotatably arranged on the base 320, and the rotating part 330 rotates synchronously with the hinge 310, thereby driving the first frame 100 and the second frame 200 to fold or unfold relative to each other.

[0033] Specifically, the base 320 is used to install and accommodate the rotating shaft 310 and part of the rotating part 330. In this embodiment, the rotating shaft 310 includes a first rotating shaft 311 and a second rotating shaft 312. The first rotating shaft 311 and the second rotating shaft 312 are arranged side by side, and the extension direction of the first rotating shaft 311 is the same as the extension direction of the second rotating shaft 312 and the extension direction of the rotation axis. The first rotating shaft 311 and the second rotating shaft 312 rotate synchronously. Specifically, the first rotating shaft 311 and the second rotating shaft 312 are engaged by gears, so that the first rotating shaft 311 and the second rotating shaft 312 can rotate synchronously. The first frame 100 is located on a side of the first rotating shaft 311 away from the second rotating shaft 312, and the second frame 200 is located on a side of the second rotating shaft 312 away from the first rotating shaft 311.

[0034] There are multiple rotating parts 330, which are arranged on both sides of the base 320. The rotating parts 330 can be used to connect the first frame 100 or the second frame 200, and the rotating parts 330 can also be used to install the display screen. The number of rotating parts 330 can be an even number, and the even number of rotating parts 330 are symmetrically distributed on both sides of the base 320.

[0035] Each rotating part 330 includes a rotating member 340 and a guide member 360. The rotating member 340 is rotatably connected to the base 320 and rotates synchronously with the rotating shaft 310. The guide member 360 is rotatably connected to the base 320. The rotating member 340 and the guide member 360 can move relative to each other.

[0036] The guide rail member 360 is rotatably connected to the base 320 via a rotating connecting member 420. The guide rail member 360 is used to connect to the first frame body 100 or the second frame body 200 so that the first frame body 100 or the second frame body 200 can rotate relative to the base 320. Specifically, the guide rail member 360 located on the side of the first rotating shaft 311 away from the second rotating shaft 312 is connected to the first frame body 100, for example, it can be connected to the first frame body 100 by screws; the guide rail member 360 of the rotating part 330 located on the side of the second rotating shaft 312 away from the first rotating shaft 311 is connected to the second frame body 200, for example, it can be connected to the second frame body 200 by screws.

[0037] The rotation axis of the rotating member 340 is inconsistent with the rotation axis of the guide member 360, so the rotation path of the rotating member 340 relative to the base 320 is different from the rotation path of the guide member 360 relative to the base 320, and there is a path difference, and the rotating member 340 and the guide member 360 can slide relative to each other.

[0038] The hinge assembly 300 further includes a support plate 410 , and the support plate 410 is used to mount the display screen 30 .

[0039] Please continue reading Figure 5The rotating shaft assembly 300 further includes a decorative member 350 and a fixing member 370. The decorative member 350 is disposed on the outside of the base 320 and serves as the appearance of the entire rotating shaft assembly 300, and plays a role in shielding the base 320 and the rotating shaft. The decorative member 350 can be configured as a roughly box-shaped structure, and the base 320 and the rotating shaft are accommodated inside the decorative member 350 to form a shield.

[0040] Specifically, in this embodiment, Figure 6 The top view of the decorative element 350 is shown. Figure 5 and Figure 6 The decorative member 350 includes a bottom plate 351 and a side plate 352. The bottom plate 351 is a generally planar plate-shaped structure. The side plate 352 is connected to the edge of the bottom plate 351 and forms a cavity 353 with the bottom plate 351. The base 320 and the shaft are accommodated in the cavity 353. The base 320 is arranged on the inner surface of the bottom plate 351, and the outer surface of the bottom plate 351 serves as at least a part of the appearance surface of the shaft assembly 300.

[0041] The rotating shaft 310 is fixed to the base 320 and can rotate relative to the base 320 . The base 320 is received in the cavity 353 and is disposed on the bottom plate 351 . Figure 7 Shows Figure 4 For the partial cross-sectional structure of the rotating shaft assembly 300 along line BB, please refer to Figure 7 The base 320 is provided with a through hole 321, and the through hole 321 is set through the base 320. The number of the through holes 321 can be one or more. In this embodiment, the number of the through holes 321 is multiple, and the multiple through holes 321 are arranged side by side and spaced along the length direction of the base 320, and the aperture of each through hole 321 can be set to the same form.

[0042] The bottom plate 351 of the decorative member 350 is provided with a connecting portion 354, and the outer diameter of the connecting portion 354 can be slightly smaller than the aperture of the through hole 321, so that the connecting portion 354 can extend into the through hole 321. As an embodiment, the number of connecting portions 354 can also be multiple, and multiple connecting portions 354 can be arranged side by side and spaced along the length direction of the decorative member 350. At this time, multiple connecting portions 354 can extend into multiple through holes 321 one by one. In this embodiment, the connecting portion 354 is provided with a connecting hole 356, and the connecting hole 356 is provided with an internal thread for threaded connection with the fixing member 370. In some other embodiments, the connecting portion 354 can also be connected to the fixing member 370 by bonding, clamping, etc., which is not limited in this embodiment. It can be understood that when the number of through holes 321 is one, the number of connecting portions 354 can also be one, and the connecting portion 354 is arranged corresponding to the through hole 321 and extends into the through hole 321.

[0043] Please continue reading Figure 7The fixing member 370 includes a fixing rod 372 and a fixing cap 371. The fixing rod 372 may be a rod-shaped structure and may extend into the connecting hole 356. The fixing rod 372 is connected to the connecting portion 354. In this embodiment, the fixing rod 372 is provided with an external thread that matches the internal thread of the connecting hole 356 and may be threadedly connected to the connecting hole 356 of the connecting portion 354. The fixing cap 371 is connected to the fixing rod 372, and the outer diameter of the fixing cap 371 is greater than the outer diameter of the fixing rod 372. In one embodiment, the fixing cap 371 is roughly a disc-shaped structure. In some other embodiments, the fixing cap 371 may also be a polygonal structure, which is not limited in this embodiment.

[0044] The surface of the fixing cap 371 facing the decorative member 350 includes a first area 374 and a second area 375, the second area 375 surrounds the first area 374, and the first area 374 corresponds to the connecting portion 354, that is, the orthographic projection of the connecting portion 354 on the surface of the fixing cap 371 facing the decorative member 350 is located in the first area 374, that is, the second area 375 does not correspond to the connecting portion 354. The surface of the fixing cap 371 facing away from the decorative member 350 may be provided with a rotation groove 373, which is used for a tool to screw the fixing member 370, and the rotation groove 373 may be a straight groove, a cross groove, a polygonal groove, etc., which is not limited in this embodiment.

[0045] The second area 375 of the fixing member 370 presses against the base 320, thereby fixing the base 320 and the decorative member 350 relatively. Specifically, the connecting portion 354 has an end surface 355, which is located on the surface of the connecting portion 354 away from the outer surface of the decorative member 350. The base 320 includes a first surface 323 and a second surface 324 opposite to each other, the first surface 323 faces the decorative member 350 and can be attached to the inner surface of the bottom plate 351, and the second area 375 presses against the second surface 324. Since the second area 375 of the fixing cap 371 does not correspond to the connecting portion 354, the base 320 does not need to overlap the connecting portion 354 for locking, thus avoiding the problem of increasing the thickness of the entire rotating shaft assembly 300 due to the thickness superposition when fixing the decorative member 350 and the base 320, thereby reducing the thickness of the entire rotating shaft assembly 300. It can be understood that the thickness in the present application refers to the dimension of the rotating shaft assembly 300 along the axial direction of the through hole 321.

[0046] In a more specific embodiment, please refer to Figure 7, there is a spacing between the second surface 324 and the end surface 355, wherein the second surface 324 is higher than the end surface 355, and the spacing is less than or equal to 0.05 mm. By compressing the second surface 324 of the base 320 and the end surface 355 of the connecting portion 354 to or equal to 0.05 mm, the thickness of the entire rotating shaft assembly 300 can be significantly reduced. When fixing the fixing member 370, the second area 375 of the fixing member 370 presses against the second surface 324, and a gap is formed between the first area 374 and the end surface 355. The gap can be used for operating and assembling the fixing member 370, and it is convenient to operate the fixing member 370 to lock it. Since the fixing rod 372 and the connecting portion 354 are fixed by threaded connection, even if the first area 374 does not abut against the end surface 355, the connection stability between the fixing member 370 and the connecting portion 354 can be ensured.

[0047] In another more specific embodiment, see Figure 8 , there is a spacing between the second surface 324 and the end surface 355, wherein the position of the second surface 324 adjacent to the through hole 321 is set to a stepped structure, that is, the area of ​​the second surface 324 adjacent to the through hole 321 is lower than the end surface 355, and the spacing between the first surface 323 of the area and the end surface 355 is less than or equal to 0.05mm, which can further reduce the thickness of the entire shaft assembly 300. At this time, the second area 375 can be set to protrude from the first area 374, that is, the thickness of the second area 375 is greater than the thickness of the first area 374, and can abut against the second surface 324. When fixing the fixing member 370, the second area 375 of the fixing member 370 presses against the second surface 324, and at this time, the first area 374 presses against the end surface 355, thereby fixing the base 320 and the decorative member 350 relatively.

[0048] In another more specific embodiment, see Fig. 9 The second surface 324 is flush with the end surface 355, the second area 375 presses against the second surface 324, and the first area 374 presses against the end surface 355. In this arrangement, since the fixing cap 371 presses against the end surface 355 and the second surface 324 at the same time, the fixing between the base 320 and the decorative member 350 can be made more stable. At the same time, the thickness of the rotating shaft assembly 300 can be further reduced.

[0049] The hinge assembly 300 and the electronic device 10 provided in the embodiment of the present application are provided with a through hole 321 on the base 320, and the connecting portion 354 provided on the decorative piece 350 can extend into the through hole 321. The fixing cap 371 of the fixing piece 370 presses the base 320 against the decorative piece 350, without overlapping the base 320 on the decorative piece 350 for locking. Therefore, the size of the entire hinge assembly 300 in the thickness direction can be reduced, thereby making the electronic device 10 thinner and lighter.

[0050] Please refer again Figure 1 The electronic device 10 further includes a mainboard 40 and a battery 50. The mainboard 40 can be arranged in the first frame 100, and the battery 50 can be arranged in the second frame 200. In order to improve the endurance of the electronic device 10, the battery 50 can be a large-capacity battery 50, for example, the area of ​​the battery 50 can cover at least 80% of the area of ​​the second frame 200. The mainboard 40 can be electrically connected to the battery 50 to obtain power supply. Various processors 60, memories, and other devices can be integrated on the mainboard 40, so when the mainboard 40 is working, more heat will be generated. In one embodiment, the electronic device 10 can also include a secondary battery (not shown in the figure), which can be arranged in the first frame 100 and adjacent to the mainboard 40. The secondary battery can be electrically connected to the mainboard 40, and the secondary battery can supply power to the mainboard 40, so that the battery 50 does not need to be connected to the first frame 100 to supply power to the electrical components in the first frame 100. The battery 50 can be electrically connected to the display screen to supply power to the display screen.

[0051] Among them, the processor 60 may include one or more processing cores. The processor 60 uses various interfaces and lines to connect various parts within the entire electronic device 10, and executes various functions and processes data of the electronic device 1010 by running or executing instructions, programs, code sets or instruction sets stored in the memory, and calling data stored in the memory. Optionally, the processor 60 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 60 can integrate one or a combination of a central processing unit 60 (Central Processing Unit, CPU), a graphics processing unit 60 (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing display content; and the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 60, but may be implemented separately through a communication chip.

[0052] It should also be noted that, in this embodiment, expressions such as "first", "second", "third", and "fourth" are only used for distinction and do not represent limitations on the specific structure.

[0053] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotating shaft assembly, It is characterized in that include: A base, wherein the base is provided with a through hole; A rotating shaft, the rotating shaft is rotatably disposed on the base; A decorative piece, wherein the decorative piece is provided with a connecting portion, the decorative piece is arranged on the outer side of the base and shields the base and the rotating shaft, and the connecting portion extends into the through hole; and A fixing member, the fixing member includes a fixing rod and a fixing cap, the fixing cap is connected to the fixing rod, the fixing rod is connected to the connecting portion, the surface of the fixing cap facing the decorative member includes a first area and a second area, the second area surrounds the first area, the first area corresponds to the connecting portion, and the second area presses against the base.

2. The shaft assembly according to claim 1, It is characterized in that The connecting portion has an end surface, and the base includes a first surface and a second surface facing each other, the first surface faces the decorative element, and the second area is pressed against the second surface.

3. The shaft assembly according to claim 2, It is characterized in that The second surface is flush with the end surface, the second area is pressed against the second surface, and the first area is pressed against the end surface.

4. The shaft assembly according to claim 2, It is characterized in that There is a distance between the second surface and the end surface, and the distance is less than or equal to 0.05 mm.

5. The shaft assembly according to claim 4, It is characterized in that The second surface is higher than the end surface, the second area is pressed against the second surface, and a gap is formed between the first area and the end surface.

6. The shaft assembly according to claim 4, It is characterized in that The second surface is lower than the end surface, the second area protrudes from the first area and presses against the second surface, and the first area presses against the end surface.

7. The shaft assembly according to any one of claims 1 to 6, It is characterized in that The fixing rod is threadedly connected to the connecting portion.

8. The shaft assembly according to any one of claims 1 to 6, It is characterized in that The base is provided with a plurality of through holes, and the decorative element is provided with a plurality of connecting parts, and the plurality of connecting parts extend into the plurality of through holes one by one.

9. The shaft assembly according to claim 8, It is characterized in that The plurality of connection portions are arranged at intervals along the length direction of the decorative element.

10. An electronic device, It is characterized in that include: The shaft assembly according to any one of claims 1 to 9; A first frame and a second frame; the first frame and the second frame are connected to two sides of the shaft assembly and can be folded or unfolded relative to each other; and A display screen is arranged on the first frame body and the second frame body.

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