CN117366088A

CN117366088A - Rotating shaft device, folding shell and electronic equipment

Info

Publication number: CN117366088A
Application number: CN202210764168.4A
Authority: CN
Inventors: 刘世林; 谷一平; 廖彬材; 李志�; 栗炟; 庞敬华; 邱伟彬
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2024-01-09
Also published as: WO2024001136A1

Abstract

The invention provides a rotating shaft device, which comprises a positioning seat, a rotating assembly and a supporting assembly, wherein the positioning seat comprises a connecting part arranged at the end part of the positioning seat; the rotating assembly comprises a first rotating mechanism and a second rotating mechanism, wherein the first rotating mechanism and the second rotating mechanism comprise rotating parts and driven parts, the rotating parts of the two rotating mechanisms are respectively connected with the connecting parts in a rotating way, the driven parts of the two rotating mechanisms are respectively connected with the positioning seat in a rotating way, the driven parts of the first rotating mechanism are connected with the rotating parts in a sliding way, and the driven parts of the second rotating mechanism are connected with the rotating parts in a sliding way; the support assembly comprises two side support pieces which are respectively connected with the rotating piece of the first rotating mechanism and the rotating piece of the second rotating mechanism in a rotating way, and the two side support pieces are respectively and movably connected with the positioning seat. The invention also relates to a folding shell provided with the rotating shaft device and electronic equipment.

Description

Rotating shaft device, folding shell and electronic equipment

Technical Field

The invention relates to the field of flexible screen support, in particular to a rotating shaft device for supporting a flexible screen, a folding shell provided with the rotating shaft device and electronic equipment provided with the folding shell.

Background

With the development of display equipment, a bendable flexible display screen is developed, and folding screen equipment with the bendable flexible display screen is increasingly popular with people due to the unique modeling and diversified functions of the folding screen equipment. The folding scheme of the current bendable flexible display screen comprises inner folding and outer folding, and the bendable flexible display screen of the folding screen device in the related technology is generally supported by adopting a hinge mechanism; however, the existing hinge mechanism is large in size and occupies a large internal space of the folding screen device.

Disclosure of Invention

The application provides a rotating shaft device, a folding shell provided with the rotating shaft device and electronic equipment provided with the folding shell.

The rotating shaft device comprises a positioning seat, a rotating assembly and a supporting assembly, wherein the positioning seat comprises a connecting part arranged at the end part of the positioning seat; the rotating assembly comprises a positioning seat, a first rotating mechanism and a second rotating mechanism which are arranged side by side, wherein the first rotating mechanism and the second rotating mechanism comprise rotating pieces and driven pieces, the rotating pieces of the first rotating mechanism and the second rotating mechanism are respectively connected with the connecting parts in a rotating way, the driven pieces of the first rotating mechanism and the second rotating mechanism are respectively connected with the positioning seat in a rotating way, one end of the driven piece of the first rotating mechanism, which is far away from the positioning seat, is connected with the rotating piece of the first rotating mechanism in a sliding way, and one end of the driven piece of the second rotating mechanism, which is far away from the positioning seat, is connected with the rotating piece of the second rotating mechanism in a sliding way; the support assembly comprises a first side support and a second side support which are arranged on two opposite sides of the positioning seat, the first side support is rotationally connected with the rotating piece of the first rotating mechanism, the second side support is rotationally connected with the rotating piece of the second rotating mechanism, the first side support and the second side support are respectively and movably connected with the positioning seat, when the rotating piece of the first rotating mechanism and the rotating piece of the second rotating mechanism rotate relative to the positioning seat to be close to each other, the driven piece of the first rotating mechanism and the driven piece of the second rotating mechanism rotate relative to the positioning seat respectively, one end of the driven piece of the first rotating mechanism, which is far away from the positioning seat, slides relative to the rotating piece of the first rotating mechanism, one end of the driven piece of the second rotating mechanism, which is far away from the positioning seat, slides relative to the rotating piece of the second rotating mechanism, the side support and the rotating piece of the first rotating mechanism are mutually close to each other, and the second side support are mutually close to each other; when the rotating parts of the first rotating mechanism and the second rotating mechanism rotate relative to the positioning seat respectively and are far away from each other, the driven parts of the first rotating mechanism and the driven parts of the second rotating mechanism rotate relative to the positioning seat respectively, one end of the driven parts of the first rotating mechanism far away from the positioning seat slides relative to the rotating parts of the first rotating mechanism, one end of the driven parts of the second rotating mechanism far away from the positioning seat slides relative to the rotating parts of the second rotating mechanism, the first side supporting parts and the rotating parts of the first rotating mechanism rotate mutually, the second side supporting parts and the rotating parts of the second rotating mechanism rotate mutually, and the first side supporting parts and the second side supporting parts slide relative to the positioning seat and rotate mutually and are far away from each other so as to realize mutual unfolding of the first side supporting parts and the second side supporting parts.

The application also provides a folding casing, it includes pivot device and two frameworks, pivot device is located two between the framework, two the framework connect respectively in pivot device rotate two of subassembly and rotate.

The application also provides electronic equipment, it includes flexible screen, two frameworks and pivot device, the pivot device is located two between the framework, the rotating piece of the relative both sides of pivot device is connected respectively in two the framework, two are located to flexible screen the front of framework reaches the front of pivot device.

The rotating piece, the driven piece and the side supporting piece of the rotating shaft device of the electronic equipment are all directly connected with the positioning seat, so that the rotating shaft device is simple in structure, low in manufacturing cost and compact in connection of all elements of the rotating shaft device, the whole width of the rotating shaft device is small, the rotating shaft device occupies the inner space of the folding shell, the layout of other elements such as a main board or a battery in the electronic equipment is facilitated, and the miniaturization development is facilitated; in addition, the rotating piece is connected to the end part of the positioning seat, so that the space occupied by the rotating piece on the positioning seat is small.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are of some embodiments of the invention and that other drawings may be derived from these drawings without undue effort.

Fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present application;

FIG. 2 is an exploded perspective view of a folding housing and a flexible screen of the electronic device of FIG. 1;

FIG. 3 is a schematic front view of the folding housing of FIG. 2;

FIG. 4 is an enlarged view of section IV of FIG. 3;

FIG. 5 is a further exploded schematic view of the electronic device of FIG. 2;

FIG. 6 is an enlarged view of the spindle assembly of FIG. 5;

FIG. 7 is an exploded perspective view of the spindle assembly of FIG. 6;

FIG. 8 is a schematic perspective view of another view of the spindle assembly of FIG. 7;

FIG. 9 is an exploded view of the positioning seat, support assembly and rotation assembly of FIG. 7;

FIG. 10 is a schematic perspective view of the positioning seat, the supporting assembly and the rotating assembly of FIG. 9 from another perspective;

FIG. 11 is a further exploded perspective view of the positioning seat and rotating assembly of FIG. 9;

FIG. 12 is a schematic perspective view of the positioning seat and rotating assembly of FIG. 11 from another perspective;

FIG. 13 is an enlarged view of a part of the structure of the spindle assembly of FIG. 11;

FIG. 14 is an enlarged view of a part of the structure of the spindle assembly of FIG. 12;

fig. 15, 16, 18, 20 and 22 are partial perspective sectional views of different parts of the electronic device of fig. 1;

FIG. 17 is a cross-sectional view of the electronic device of FIG. 16;

FIG. 19 is a cross-sectional view of the electronic device of FIG. 18;

fig. 21 is a cross-sectional view of the electronic device of fig. 20;

fig. 23 is a cross-sectional view of the electronic device of fig. 22;

FIG. 24 is a schematic perspective view of the electronic device of FIG. 1 folded to an angle;

FIG. 25 is a schematic perspective view of the spindle assembly of FIG. 24;

FIG. 26 is a schematic perspective view of the spindle assembly of FIG. 25 from another perspective;

FIGS. 27-30 are partial cross-sectional views of different portions of the spindle assembly of FIG. 25;

fig. 31 is a schematic perspective view of the electronic device of fig. 1 in a fully folded state;

FIG. 32 is a schematic perspective view of the spindle assembly of FIG. 31;

FIG. 33 is a perspective view of the spindle assembly of FIG. 32 from another perspective;

Fig. 34-37 are partial cross-sectional views of different portions of the electronic device of fig. 31.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.

Furthermore, the following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments that can be used to practice the present application. Directional terms referred to in this application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely directions referring to the attached drawings, and thus, directional terms are used for better, more clear description and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "disposed on … …" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1 to 7, an electronic device 100 according to an embodiment of the invention includes a foldable housing 20 and a flexible screen 30 disposed on the foldable housing 20. The flexible screen 30 may be, but is not limited to, flexible display screens, flexible touch display screens, and other flexible components with corresponding functions, or flexible components fixedly attached with a flexible support plate, such as flexible display screens attached with flexible steel plates, flexible touch screens, and the like. The flexible screen 30 can bend or flatten with the folded housing 20. The folding housing 20 includes two frames 21 and a rotating shaft device 22 connected between the two frames 21, the two frames 21 are respectively connected to two opposite sides of the rotating shaft device 22, and the two frames 21 are folded or flattened by the rotating shaft device 22. The flexible screen 30 comprises a bendable region 31 corresponding to the spindle means 22, and two non-bendable regions 33 connected to opposite sides of the bendable region 31. The two non-bending areas 33 of the flexible screen 30 can be fixed on the front surfaces of the two frames 21 respectively, and the bendable areas 31 are attached to the front surfaces of the rotating shaft devices 22. The bendable region 31 of the flexible screen 30 can bend or flatten with the spindle device 22.

The rotating shaft device 22 comprises a positioning seat 23, a rotating assembly 25 and a supporting mechanism 27, and the positioning seat 23 comprises a connecting part 230 arranged at the end part of the positioning seat; the rotating assembly 25 comprises a first rotating mechanism 250 and a second rotating mechanism 250 'which are arranged on the positioning seat 23 in parallel, wherein the first rotating mechanism 250 and the second rotating mechanism 250' are arranged on two opposite sides of the positioning seat 23; the first rotating mechanism 250 and the second rotating mechanism 250' each include a rotating member 251 and a driven member 253 disposed on one side of the positioning seat 23, that is, two rotating members 251 of the rotating assembly 25 are disposed on two opposite sides of the positioning seat 23, the rotating member 251 of the first rotating mechanism 250 and the rotating member 251 of the second rotating mechanism 250' are rotationally connected with the connecting portion 230, the driven member 253 of the first rotating mechanism 250 and the rotating member 251 of the second rotating mechanism 250' are rotationally connected with the positioning seat 23, and one end of the driven member 253 of the first rotating mechanism 250 far from the positioning seat 23 is slidingly connected with the rotating member 251 of the first rotating mechanism 250; the end of the follower 253 of the second rotating mechanism 250 'far away from the positioning seat 23 is slidingly connected with the rotating member 251 of the second rotating mechanism 250'; the supporting assembly 27 includes a first side supporting member 271 and a second side supporting member 271 'disposed on opposite sides of the positioning seat 23, the first side supporting member 271 is rotatably connected with the rotating member 251 of the first rotating mechanism 250, the second side supporting member 271' is rotatably connected with the rotating member 251 of the second rotating mechanism 250', and the first side supporting member 271 and the second side supporting member 271' are movably connected with the positioning seat 23. The positioning seat 23 further includes a strip-shaped positioning frame 231, two opposite ends of the positioning frame 231 are respectively provided with a connecting portion 230, each connecting portion 230 is connected with a rotating assembly 25, that is, two opposite ends of the positioning frame 231 are respectively provided with a rotating assembly 25, and the first rotating mechanism 250 and the second rotating mechanism 250 'of each rotating assembly 25 may be symmetrically arranged along the central line O of the length direction of the positioning seat 23, or the first rotating mechanism 250 and the second rotating mechanism 250' of the rotating assembly 25 may be asymmetric. In the present embodiment, the first rotating mechanism 250 and the second rotating mechanism 250' of each rotating assembly 25 are symmetrical along the center line O of the positioning seat 23. The first side support 271 is rotatably connected with the rotating pieces 251 of the two first rotating mechanisms 250 on one side of the positioning seat 23, and the second side support 271 'is rotatably connected with the rotating pieces 251 of the two second rotating mechanisms 250' on the other side opposite to the positioning seat 23.

When the rotating member 251 of the first rotating mechanism 250 and the rotating member 251 of the second rotating mechanism 250' of the rotating assembly 25 rotate relative to the positioning seat 23 to be close to each other, the driven member 253 of the first rotating mechanism 250 and the driven member 253 of the second rotating mechanism 250' rotate relative to the positioning seat 23, respectively, one end of the driven member 253 of the first rotating mechanism 250 away from the positioning seat 23 slides relative to the rotating member 251 of the first rotating mechanism 250, one end of the driven member 253 of the second rotating mechanism 250' away from the positioning seat 23 slides relative to the rotating member 251 of the second rotating mechanism 250', the first side supporting member 271 and the rotating member 251 of the first rotating mechanism 250 rotate relative to each other, the driven member 253 of the first rotating mechanism 250 and the driven member 253 of the second rotating mechanism 250' are close to each other, the first side supporting member 271' and the second side supporting member 271' are close to each other, and the first side supporting member 271' and the second side supporting member 271' are folded relative to each other; when the rotating members 251 of the first rotating mechanism 250 and the rotating members 251 of the second rotating mechanism 250 'of the rotating assembly 25 rotate relative to the positioning seat 23 and move away from each other, the driven members 253 of the first rotating mechanism 250 and the driven members 253 of the second rotating mechanism 250' rotate relative to the positioning seat 23, and the end of the driven member 253 of the first rotating mechanism 250 away from the positioning seat 23 slides relative to the rotating members 251 of the first rotating mechanism 250, and the end of the driven member 253 of the second rotating mechanism 250 'away from the positioning seat 23 slides relative to the rotating members 251 of the second rotating mechanism 250', the first side supporting member 271 and the rotating members 251 of the first rotating mechanism 250 rotate relative to each other, and the first side supporting member 271 and the second side supporting member 271 'slide relative to the positioning seat 23 and rotate away from each other, so as to realize the mutual unfolding of the first side supporting member 271 and the second side supporting member 271'. When the first side support 271 and the second side support 271' are in the flattened state, the first side support 271 is coplanar with the front face of the second side support 271' so that the flexible screen 30 fits against the front face of the first side support 271 and the front face of the second side support 271 '.

In this embodiment, the front surface refers to the surface facing the light emitting surface of the flexible screen 30, and the back surface refers to the surface facing away from the light emitting surface of the flexible screen 30. The electronic device 100 is, for example, but not limited to, a mobile phone, a tablet computer, a display, a liquid crystal panel, an OLED panel, a television, a smart watch, a VR head mounted display, a vehicle mounted display, and any other product or component having a display function. "connected" in the description of the embodiments of the present invention is intended to include both direct connection and indirect connection, such as where the a and B connections include direct connection of a and B or other connection through a third element C or more. The connection also comprises two cases of integrated connection and non-integrated connection, wherein the integrated connection means that A and B are integrally formed and connected, and the non-integrated connection means that A and B are non-integrally formed and connected.

The rotating assembly 25 of the rotating shaft device 22 is arranged at the end part of the positioning seat 23, the first rotating mechanism 250 and the second rotating mechanism 250 'of the rotating assembly 25 are respectively arranged at two opposite sides of the positioning seat 23, the rotating member 251 of the first rotating mechanism 250 and the rotating member 251 of the second rotating mechanism 250' are respectively and rotatably connected with the connecting part 230 at the end part of the positioning seat 23, one end of the driven member 253 of the first rotating mechanism 250 and one end of the driven member 253 of the second rotating mechanism 250 'are respectively and rotatably connected with the positioning seat 23, the other end of the driven member 253 of the first rotating mechanism 250 is respectively and slidably connected with the rotating member 251 of the first rotating mechanism 250', the other end of the driven member 253 of the second rotating mechanism 250 'is slidingly connected with the rotating member 251 of the second rotating mechanism 250', the first side supporting member 271 and the rotating member 251 of the second side supporting member 271 'are respectively and rotatably connected with the rotating member 251 of the second rotating mechanism 250', and the positioning seat 23 are movably connected. One end of the rotating member 251 of the first rotating mechanism 250, which is far away from the positioning seat 23, and one end of the rotating member 251 of the second rotating mechanism 250', which is far away from the positioning seat 23, are respectively connected to the frame bodies 21, and in the process that the two frame bodies 21 are folded to be close to each other or flattened to be far away from each other, the first rotating mechanism 250 and the second rotating mechanism 250' respectively drive the first side supporting member 271 and the second side supporting member 271 'to rotate relative to the positioning seat 23 and the first rotating mechanism 250 and the second rotating mechanism 250, so that the first side supporting member 271 and the second side supporting member 271' are folded or unfolded to each other, thereby realizing folding or flattening of the flexible screen 30. The hinge structure in the prior art has the characteristics of larger width and more occupied space, and is not beneficial to the miniaturization development of the folding screen mobile phone; in the first rotating mechanism 250, the rotating member 251 and the driven member 253 of the first rotating mechanism 250 and the rotating member 251 and the driven member 253 of the second rotating mechanism 250' are directly connected to the end part of the positioning seat 23, and the first side supporting member 271 and the second side supporting member 271' are directly connected with the positioning seat 23, so that the positioning seat 23, the rotating member 251, the driven member 253, the first side supporting member 271 and the second side supporting member 271' are compactly connected, the overall width of the rotating shaft device 22 is smaller, the rotating shaft device 22 occupies the internal space of the folding shell 20, the layout of other elements such as a main board or a battery in the electronic equipment 100 is facilitated, the miniaturization development is facilitated, the connection reliability among the components of the rotating shaft device 22 is high, and the flexible screen 30 is prevented from being damaged due to the displacement of the elements when the electronic equipment 100 falls down; secondly, the rotating shaft device 22 has less elements, simple structure and lower manufacturing cost; in addition, the first rotating mechanism 250 and the second rotating mechanism 250' of the rotating shaft device 22 are located at the end portions of the positioning seat 23, so that a large amount of space is provided in the middle portion of the positioning seat 23 for accommodating other components, for example, a heat conducting member is disposed in the middle portion of the positioning seat 23, two opposite ends of the heat conducting member are respectively connected to two frames, and heat generated when the components such as a motherboard and a battery of the electronic device 100 work is conducted to the two frames 21 through the heat conducting member, thereby facilitating heat dissipation of the electronic device 100.

As shown in fig. 5, the frame 21 includes a front 211, a back 213, opposite side 214 and two end 215, the hinge device 22 is connected between two adjacent end 215 of the two frames 21, the bendable region 31 of the flexible screen 30 is attached to the front of the hinge device 22, and the non-bendable region 33 of the flexible screen 30 is connected to the front 211 of the frame 21. The front 211 of each frame 21 is provided with a mounting groove 216 near one end of the rotating shaft device 22, the mounting groove 216 penetrates through the front 211 of the frame 21, and two opposite ends of the mounting groove 216 extend to two opposite side surfaces 214 near the frame 21 respectively. Opposite sides of the rotating shaft device 22 are respectively accommodated in the mounting grooves 216 of the two frames 21, and each rotating member 251 is fixedly connected with the corresponding frame 21. The back surface 213 of the frame 21 is provided with a plurality of accommodating spaces (not shown) for mounting electronic devices such as a circuit board and a battery.

The structure of the first rotation mechanism 250 may be the same as or different from that of the second rotation mechanism 250', and the structure of the first side support 271 may be the same as or different from that of the second side support 271'; in the present embodiment, the structure of the first rotation mechanism 250 is the same as that of the second rotation mechanism 250', and the structure of the first side support 271 is the same as that of the second side support 271', and therefore, the structure of the first rotation mechanism 250 and the structure of the first side support 271 will be mainly described below:

As shown in fig. 6 and 7, a first rotation axis L1 between the rotation member 251 and the positioning seat 23 is parallel to a second rotation axis L2 between the driven member 253 and the positioning seat 23, the first rotation axis L1 on the same side of the positioning seat 23 is closer to the center line O of the positioning seat 23 than the second rotation axis L2, and the first rotation axis L1 is closer to the side support member 271 than the second rotation axis L2. The center line O refers to a center line extending along the length direction of the positioning seat 23, and the first rotation axis L1 and the second rotation axis L2 are both located in the positioning seat 23. In this embodiment, the first rotation axis L1 and the second rotation axis L2 are the axes of solid shafts, and the two solid shafts are connected to the positioning seat 23, so that the connection between the rotating member 251 and the driven member 253 and the positioning seat 23 is compact, stable and firm, and the width of the first rotation mechanism 250 is reduced, so that the width of the whole rotation shaft device 22 is reduced. In the present embodiment, the first rotating mechanism 250 and the second rotating mechanism 250' on opposite sides of the positioning seat 23 are symmetrically disposed along the center line O. In other embodiments, the first rotating mechanism 250 and the second rotating mechanism 250' on opposite sides of the positioning seat 23 may also be offset from each other.

Referring to fig. 7-14, the connecting portion 230 is rotatably connected to the rotating member 251 through a connection shaft, the axis of which is collinear with the corresponding first rotation axis L1, the connection shaft is disposed at one of the connecting portion 230 and the rotating member 251, and the shaft hole is disposed at the other of the connecting portion 230 and the rotating member 251. In the present embodiment, the connection portion 230 is provided with a connection shaft 2301, the rotator 251 is provided with a shaft hole 2511, and the connection shaft 2301 is rotatably inserted into the shaft hole 2511. Specifically, the opposite end surfaces of the positioning frame 231 are respectively provided with a connecting part 230, the connecting part 230 is a connecting plate protruding from the end surface of the positioning frame 231, the connecting plate is rectangular, and the opposite ends of the side surface of each connecting part 230 facing away from the other connecting part 230 are respectively provided with a connecting shaft 2301; preferably, the connection shaft 2301 is a shaft tube, and two connection shafts 2301 on the same connection portion 230 are symmetrically arranged along the center line O. Opposite end surfaces of the connection part 230 are formed as arc surfaces to facilitate rotation of the rotation member 251. In other embodiments, the opposite ends of the front surface of the positioning frame 231 are respectively protruded with the connection portions 230, and the opposite ends of the outer side surface of the connection portions 230 are respectively provided with the connection shafts 2301. In other embodiments, the opposite ends of the connection portion 230 are respectively provided with a shaft hole, the shaft axis of the shaft hole is collinear with the first rotation axis L1, and the rotation member 251 is provided with a connection shaft, and the connection shaft is rotatably inserted into the corresponding shaft hole.

The follower 253 and the positioning seat 23 are rotatably connected by matching a rotation shaft, the axis of which is collinear with the corresponding second rotation axis L2, with the rotation shaft being provided on one of the follower 253 and the positioning seat 23, and the rotation hole being provided on the other of the follower 253 and the positioning seat 23. In this embodiment, two opposite sides of the end of the positioning seat 23 are respectively provided with a rotation hole 2302, the axis of the rotation hole 2302 is collinear with the corresponding second rotation axis L2, the follower 253 is provided with a rotation shaft 2530, and the rotation shaft 2530 rotatably passes through the rotation hole 2302. Specifically, the end of the positioning frame 231 near the connecting portion 230 is provided with a rotation hole 2302 at two opposite sides, and one end of the follower 253 is provided with a rotation shaft 2530, the rotation shaft 2530 is positioned relative to the follower 253, and the rotation shaft 2530 rotatably penetrates the rotation hole 2302. In other embodiments, two opposite sides of the end of the positioning frame 231 near the connection portion 230 are respectively provided with a rotation shaft, the axis of the rotation shaft is collinear with the corresponding second rotation axis L2, one end of the follower 253 is provided with a rotation hole, and the rotation shaft is rotatably inserted into the corresponding rotation hole.

The positioning frame 231 includes a frame 233 at the middle part thereof and connection blocks 235 at opposite ends of the frame 233, wherein a rotating member 251 and a driven member 253 of the first rotating mechanism 250 are rotatably connected to the connection blocks 235, and a first side supporting member 271 and a second side supporting member 271' are movably connected to the connection blocks 235. Specifically, the front surface of the frame 233 is provided with a receiving groove 2332 along the length direction thereof, and the receiving groove 2332 may be used to receive an electronic device originally mounted in the frame 21, so that the internal space of the frame 21 is increased to facilitate the layout of other components. In this embodiment, a connecting portion 230 is convexly disposed in the middle of the end surface of the connecting block 235 facing away from the frame 233 toward the front direction, and two connecting shafts 2301 are disposed on the side surface of the connecting portion 230 facing away from the frame 233, where the two connecting shafts 2301 are symmetrical along the center line O of the positioning seat 23. A pair of spaced lugs 2351 are provided at opposite sides of the connection block 235, respectively, and a rotation hole 2302 is provided through the pair of lugs 2351; the opposite sides of the connecting block 235 are respectively provided with a clearance groove 2353, and the clearance grooves 2353 are used for accommodating one end of the follower 253; in the present embodiment, the connection block 235 is provided with a clearance groove 2353 between the pair of lugs 2351, and the connection block 235 is also provided with clearance grooves 2353 at opposite ends of the pair of lugs 2351, respectively. Positioning grooves 2354 are respectively formed at opposite front ends of the positioning seat 23, the positioning seat 23 is provided with a containing groove 2355 at the bottom surface of the positioning groove 2354, the containing groove 2355 extends along the length direction perpendicular to the frame 233, and the containing groove 2355 is communicated with a clearance groove 2353 between a pair of lugs 2351. Specifically, a positioning groove 2354 is provided between two pairs of lugs 2351 on the front surface of the connection block 235, a receiving groove 2355 is provided on the bottom surface of the positioning groove 2354 on the connection block 235, and two opposite ends of the receiving groove 2355 are respectively communicated with a clearance groove 2353 between two pairs of lugs 2351. The connecting block 235 is further provided with a positioning hole 2356 on the bottom surface of the positioning groove 2354, and preferably, the bottom surface of the positioning groove 2354 is provided with positioning holes 2356 on two opposite sides of the receiving groove 2355.

One end of the connecting block 235, which is close to the frame 233, is provided with a pair of connecting pieces 237 at intervals, namely a pair of connecting pieces 237 parallel to each other at intervals are arranged at the intersection of the connecting block 235 and the frame 233; each connecting piece 237 is perpendicular to the length direction of the frame 233, and the first side support 271 and the second side support 271' are connected to a pair of connecting pieces 237. A clearance groove 2371 is formed between the pair of connecting pieces 237. The opposite ends of the pair of connecting pieces 237 are respectively provided with a lug 2372, a supporting shaft 2374 is arranged between the two lugs 2372 on the same side of the connecting piece 235, and the axial line of the supporting shaft 2374 is parallel to the first rotating axial line L1. The two opposite sides of the front surface of the connecting block 235 are respectively provided with a guide chute 2357, the guide chute 2357 extends along the length direction perpendicular to the frame 231, specifically, the two opposite sides of the front surface of the connecting block 235 are respectively provided with a guide slide block 2358, the guide slide blocks 2358 are positioned between the connecting piece 237 and the lugs 2351, and the front surface of each guide slide block 2358 is provided with a guide chute 2357.

The rotating member 251 includes a rotating arm 2510 and a rotating portion 2515 connected to the rotating arm 2510, wherein an end of the rotating arm 2510 away from the rotating portion 2515 is rotatably connected to the connecting portion 230 of the positioning seat 23 through a coupling shaft, the coupling shaft is disposed on one of the rotating arm 2510 and the connecting portion 230, the shaft hole is disposed on the other of the rotating arm 2510 and the connecting portion 230, and the follower 253 is slidably connected to the rotating portion 2515 at an end of the rotating arm 2510 away from the positioning seat 23. In this embodiment, an end of the rotation arm 2510 remote from the rotation portion 2515 is provided with a shaft hole 2511, and an axis of the shaft hole 2511 is collinear with the corresponding first rotation axis L1. The end of the rotation arm 2510 away from the rotation portion 2515 is provided with a rotation piece 2512 in a protruding manner, and the shaft hole 2511 is provided on the side surface of the rotation piece 2512. In this embodiment, the rotating arm 2510 is a rectangular rod, the rotating portion 2515 is connected to a side surface of one end of the rotating arm 2510, and the rotating piece 2512 is disposed on a side of the rotating arm 2510 facing away from the rotating portion 2515. Preferably, an end surface of the rotation piece 2512 facing away from the rotation arm 2510 is provided with an arc surface, so as to facilitate rotation of the rotation piece 251 relative to the positioning seat 23.

In other embodiments, the rotation piece 2512 may be connected to a side of the rotation arm 2510, which is far from the end surface of the rotation portion 2515 and is close to the rotation portion 2515, the shaft hole 2511 is formed on a side surface of the rotation piece 2512, which is far from the rotation portion 2515, the connection shaft 2301 is protruded on a side surface of the connection portion 230, which faces the frame 233, and the connection shaft 2301 is rotatably inserted in the shaft hole 2511.

An anti-derailment groove and an anti-derailment rail are provided between the rotating arm 2510 and the connecting portion 230, the cooperation of the anti-derailment rail and the anti-derailment groove can prevent the rotating arm 2510 from being separated from the connecting portion 230, the anti-derailment groove is provided at one of the connecting portion 230 and the rotating arm 2510, and the anti-derailment rail is provided at the other of the connecting portion 230 and the rotating arm 2510. In this embodiment, the connection portion 230 is provided with an anti-derailment 2304, the rotation arm 2510 is provided with an anti-derailment groove 2513, and the anti-derailment 2304 is slidably inserted into the anti-derailment groove 2513 to prevent the anti-derailment 2304 from being separated from the anti-derailment groove 2513. Specifically, the opposite end surfaces of the connection part 230 are respectively provided with arc-shaped anti-derailment 2304 in a protruding manner, and the axial line of the anti-derailment 2304 is collinear with the axial line of the corresponding connection shaft 2301; an arc-shaped anti-drop groove 2513 is formed in the end face, away from the rotating part 2515, of the rotating arm 2510, and the axial lead of the anti-drop groove 2513 is collinear with the axial lead of the shaft hole 2511; derailment prevention 2304 is rotatably provided in derailment prevention groove 2513.

In some embodiments, the connection 230 is provided with an anti-derailment slot into which the swivel arm 2510 is slidably inserted to prevent derailment from exiting the anti-derailment slot; specifically, the opposite end surfaces of the connection part 230 are respectively provided with an arc-shaped derailment prevention rail, and the axial lead of the derailment prevention rail is collinear with the axial lead of the corresponding connection shaft 2301; the end surface of the rotating arm 2510, which is away from the rotating part 2515, is provided with an arc-shaped derailment prevention rail, and the axial lead of the derailment prevention rail is collinear with the axial lead of the shaft hole 2511; the derailment prevention rail is rotatably arranged in the derailment prevention groove in a penetrating way.

The rotation portion 2515 is located at one end of the rotation arm 2510 far away from the positioning seat 23, the first side support 271 is covered on the rotation portion 2515 of the first rotation mechanism 250, the second side support 271 'is covered on the rotation portion 2515 of the second rotation mechanism 250', the first side support 271 and the rotation member 251 of the first rotation mechanism 250 are rotatably connected through cooperation of an arc groove and an arc rail, the second side support 271 'and the rotation member 251 of the second rotation mechanism 250' are rotatably connected through cooperation of an arc groove and an arc rail, the arc groove is formed in one of the rotation member 251 of the first side support 271 and the first rotation mechanism 250, the arc rail is formed in the other of the rotation member 251 of the first side support 271 and the first rotation mechanism 250, one of the rotation member 251 of the second side support 271 'and the rotation member 251 of the second rotation mechanism 250' is provided with the arc groove, and the other of the rotation member 251 of the second side support 271 'and the rotation member 250' is provided with the arc rail, and the axis of rotation of the arc groove is parallel to the first axis L1. In this embodiment, the first side supporting member 271 and the second side supporting member 271' are both rectangular plate-shaped, and one side of the first side supporting member 271 away from the positioning seat 23 is rotationally connected with the rotating member 251 of the first rotating mechanism 250, that is, one side of the first side supporting member 271 away from the positioning seat 23 is rotationally connected with the rotating member 251 of the first rotating mechanism 250 through the cooperation of the circular arc groove and the circular arc rail; the side of the second side support 271 'away from the positioning seat 23 is rotatably connected with the rotating member 251 of the second rotating mechanism 250', that is, the side of the second side support 271 'away from the positioning seat 23 is rotatably connected with the rotating member 251 of the second rotating mechanism 250' through the cooperation of the circular arc groove and the circular arc rail. Specifically, the rotating portion 2515 is a rectangular block, an arc groove 2516 is formed at a connection portion between the rectangular block and the rotating arm 2510, an axial line of the arc groove 2516 is parallel to the first rotation axis L1, arc rails 2710 are respectively disposed on sides of the first side supporting member 271 and the second side supporting member 271' away from the positioning seat 23, and the arc rails 2710 rotatably penetrate through the arc groove 2516.

In other embodiments, the rotation portion 2515 is provided with an arc groove, the axis of which is parallel to the first rotation axis L1, and the first side support 271 is provided with an arc rail rotatably penetrating the arc groove.

In other embodiments, the rotating arm 2510 is provided with an arc groove, the axis of which is parallel to the first rotation axis L1, and the first side support 271 is provided with an arc rail rotatably penetrating the arc groove.

In other embodiments, a circular arc rail is disposed at the connection between the rotation portion 2515 and the rotation arm 2510, the axis of the circular arc rail is parallel to the first rotation axis L1, and a circular arc groove is disposed on the first side support 271, and the circular arc rail is rotatably disposed through the circular arc groove.

In other embodiments, the rotation portion 2515 is provided with an arc rail, the axis of which is parallel to the first rotation axis L1, and the first side support 271 is provided with an arc groove, and the arc rail rotatably penetrates the arc groove.

In other embodiments, the rotating arm 2510 is provided with an arc rail, the axis of which is parallel to the first rotation axis L1, and the first side support 271 is provided with an arc groove, and the arc rail is rotatably disposed in the arc groove.

The rotating arm 2510 is connected to one end of the rotating portion 2515 facing away from the frame 233, the rotating arm 2510 protrudes from the surface of the rotating portion 2515 facing the first side support 271, the rotating arm 2510 and the rotating portion 2515 enclose a avoidance slot 2517, and the end of the first side support 271 is accommodated in the avoidance slot 2517. When the first side support 271 is received in the relief slot 2517, an end surface of the first side support 271 approaches or contacts the corresponding swivel arm 2510. Preferably, the front surface of the rotation portion 2515 is an inclined surface, and when the first side support 271 and the second side support 271' are in a folded state, the back surfaces of the first side support 271 and the second side support 271' are respectively attached to the front surfaces of the rotation portions 2515 of the first rotation mechanism 250 and the second rotation mechanism 250 '. The front surface of the rotation portion 2515 is provided with inclined guide sliding grooves 2518, opposite ends of the guide sliding grooves 2518 penetrate through opposite side surfaces of the rotation portion 2515, and the guide sliding grooves 2518 divide the rotation portion 2515 into guide sliding strips far away from the rotation arms 2510. The follower 253 and the rotating member 251 are connected in a sliding manner through the cooperation of a limiting groove and a limiting shaft, the axial line of the limiting shaft is parallel to the first rotating axis L1, the limiting groove is arranged on one of the follower 253 and the rotating member 251, and the limiting shaft is arranged on the other of the follower 253 and the rotating member 251. In this embodiment, an inclined limit groove 2519 is provided on an end surface of the rotation portion 2515 facing away from the rotation arm 2510, that is, the limit groove 2519 is provided on a side surface of the guide sliding bar facing away from the rotation arm 2510, the limit groove 2519 is communicated with the guide sliding groove 2518, and the limit groove 2519 extends from a front surface of the rotation portion 2515 to a back surface close to the rotation portion 2515 in an inclined manner; the follower 253 is provided with a limiting shaft 2531, and the limiting shaft 2531 slidably penetrates through the limiting groove 2519.

Further, the limiting groove 2519 includes a first limiting section 2519a and a second limiting section 2519b at opposite ends thereof, the first limiting section 2519a is far away from the positioning seat 23 compared with the second limiting section 2519b, when the first side supporting member 271 and the second side supporting member 271 'are in a flattened shape, the limiting shaft 2531 is limited to the first limiting section 2519a, and when the first side supporting member 271 and the second side supporting member 271' are in a folded state, the limiting shaft 2531 is limited to the second limiting section 2519b.

The follower 253 includes a hinge portion 2532 and a sliding portion 2534 disposed at opposite ends thereof, and a connecting portion 2535 connected between the hinge portion 2532 and the sliding portion 2534, wherein the hinge portion 2532 is rotatably connected to the positioning seat 23 through a rotation shaft 2530, and the sliding portion 2534 is slidably connected to the corresponding rotating member 251 through a limiting shaft 2531. The connecting part 2535 is a rectangular plate, the hinging part 2532 is two hinging blocks arranged at one side of the rectangular plate and spaced from each other, one hinging block is a cylinder, the axial lead of the cylinder is parallel to the first rotation axial lead L1, and the other hinging block is a waist-shaped column; the end surface of the cylinder, which is away from the waist-shaped column, is provided with an eccentric shaft 2536, and the axial lead of the eccentric shaft 2536 is parallel to the second rotating shaft L2 at intervals; that is, the eccentric shaft 2536 is parallel to the second rotational axis L2 and spaced apart from the axis of the cylinder; the outer peripheral wall of the waist-shaped column is convexly provided with a pushing portion 2537, and preferably, the pushing portion 2537 is a protrusion arranged on the driven piece 253, and the protrusion is located at a position, away from the sliding portion 2534, of the outer peripheral wall of the waist-shaped column. The hinge portion 2532 is provided with a first connecting hole 2538 along the axis of the cylinder, the rotating shaft 2530 is inserted into the connecting hole 2536, and the axis of the eccentric shaft 2536 is parallel to the axis of the first connecting hole 2538 at intervals. The sliding portion 2534 is two sliding blocks arranged at intervals on the other opposite side of the rectangular plate, the sliding portion 2534 is provided with a second connecting hole 2539 along the direction parallel to the first rotation axis L1, and the limiting shaft 2531 is arranged in the second connecting hole 2539 in a penetrating mode.

Referring to fig. 6-10, the rotating assembly 25 further includes a linkage 257, wherein the linkage 257 is disposed between the two followers 253, and one of the followers 253 rotates relative to the positioning seat 23, such that the other follower 253 synchronously rotates relative to the positioning seat 23 through the linkage 257. Specifically, the linkage mechanism 257 includes an eccentric shaft 2536 and a linkage member 2570 disposed on the driven member 253, linkage grooves 2571 are respectively disposed at opposite ends of the linkage member 2570, the linkage grooves 2571 extend along a direction perpendicular to the second rotation axis L2, the eccentric shafts 2536 on the two driven members 253 are respectively slidably inserted into the two linkage grooves 2571 of the linkage member 2570, and the two linkage grooves 2571 are symmetrically disposed along a center of the linkage member 2570. When one of the followers 253 rotates relative to the positioning seat 23, the eccentric shaft 2536 on one of the followers 253 moves in the corresponding linkage groove 2571 to drive the linkage member 2570 to move along the direction perpendicular to the first rotation axis L1, so that the eccentric shaft 2536 on the other follower 253 synchronously moves in the corresponding linkage groove 2571 to realize the synchronous rotation of the other follower 253 relative to the positioning seat 23. In this embodiment, the linkage member 2570 includes a linkage plate 2572 perpendicular to the second rotation axis L2, and linkage grooves 2571 are respectively formed at opposite ends of the linkage plate 2572 along the length direction thereof; specifically, the linkage plate 2572 is a rectangular plate, and the opposite ends of the rectangular plate are respectively provided with a linkage groove 2571, and the linkage groove 2571 extends along the length direction of the rectangular plate. Preferably, the opposite end surfaces of the linkage plate 2572 are provided with circular arc surfaces to facilitate folding or flattening of the spindle device 22.

Further, the linkage groove 2571 includes a first stop segment 2571a and a second stop segment 2571b at opposite ends thereof, the first stop segment 2571a is far away from the first rotation axis L1 compared to the second stop segment 2571b, that is, the first stop segment 2571a of the same linkage groove 2571 is far away from the center line O of the positioning seat 23 compared to the second stop segment 2571 b; when the first side support 271 and the second side support 271 'are in the flattened state, the eccentric shaft 2536 is limited to the first stop section 571a, and when the first side support 271 and the second side support 271' are in the folded state, the eccentric shaft 2536 is limited to the second stop section 2571b. Preferably, the linkage groove 2571 has a kidney shape, and the linkage groove 2571 penetrates opposite side surfaces of the linkage plate 2572.

Compared with the prior art in which the linkage function is generally realized by the cooperation of gears, the linkage mechanism 257 of the present invention can realize the synchronous folding or synchronous flattening of the two followers 253 only through the linkage members 2570 and the eccentric shafts 2536 arranged on the followers 253, so as to realize the linkage function of the rotating shaft device 22. Therefore, the linkage mechanism 257 in the application has fewer elements, simple structure and lower manufacturing cost; and the linkage 257 has smaller volume, so that the width of the rotating shaft device 22 can be reduced, and the rotating shaft device 22 occupies the internal space of the shell 20.

In this embodiment, the eccentric shaft 2536 is disposed on one side of the hinge portion 2532 away from the sliding portion 2534, the diameter of the eccentric shaft 2536 is equal to or slightly smaller than the width of the linkage groove 2571, and during the rotation of the hinge portion 2532 relative to the positioning seat 23, the eccentric shaft 2536 slides along the linkage groove 2571 and abuts against the inner side surface of the linkage groove 2571, so that the linkage member 2570 moves along a direction perpendicular to the center line O of the positioning seat 23. In other embodiments, the eccentric shaft 2536 may also be provided on a side of the hinge 2532 adjacent to the slide 2534.

Preferably, the linkage 2570 and the positioning seat 23 are slidably connected by matching the sliding guide groove 2357 with the sliding guide rail 2574, the sliding guide groove 2357 extends along the moving direction of the linkage 2570, that is, the sliding guide groove 2357 extends along the direction perpendicular to the center line O of the positioning seat 23, the sliding guide groove 2357 is disposed on one of the linkage 2570 and the positioning seat 23, and the sliding guide rail 2574 is disposed on the other of the linkage 2570 and the positioning seat 23. In this embodiment, the guiding chute 2357 is formed on the positioning seat 23, the guiding rail 2574 is disposed on the linkage member 2570, specifically, two opposite ends of one side of the linkage plate 2572 are respectively provided with a guiding rail 2574, the guiding rail 2574 extends along a length direction perpendicular to the linkage plate 2572, and two guiding rails 2574 are respectively close to two linkage grooves 2571, i.e. two guiding rails 2574 are located between two linkage grooves 2571.

In other embodiments, two guiding rails 2574 may be respectively disposed on two opposite sides of the linkage plate 2572, and the front surface of the positioning seat 23 is provided with guiding grooves 2357 corresponding to the two guiding rails 2574.

In other embodiments, only one guide rail 2574 may be provided on the linkage plate 2572, and the front surface of the positioning seat 23 is provided with a guide chute 2357 corresponding to the guide rail 2574.

In other embodiments, the linkage plate 2572 is provided with a guiding chute along a direction perpendicular to the length direction thereof, and the positioning seat 23 is provided with a guiding rail corresponding to the guiding chute, and the guiding rail is slidably inserted into the guiding chute.

The supporting component 27 further includes a middle supporting member 273 located between the first side supporting member 271 and the second side supporting member 271', wherein the middle supporting member 273 is connected to the linkage member 2570, and the middle supporting member 273 moves along with the linkage member 2570, i.e. the linkage member 2570 drives the middle supporting member 273 to move along the sliding chute 2357, so that the middle supporting member 273 approaches to or departs from the positioning seat 23. Specifically, the middle supporting member 273 is a rectangular plate, and opposite ends of the back surface of the middle supporting member 273 are respectively provided with a linking member 2570. When the first side support 271 and the second side support 271 'are in the flattened state, the front face of the middle support 273, the front face of the first side support 271, and the front face of the second side support 271' are coplanar; when the first side support 271 and the second side support 271 'are in a folded state, the front surface of the middle support 273, the front surface of the first side support 271, and the front surface of the second side support 271' enclose a space having a water-drop shape in cross section. Preferably, the opposite sides of the middle support 273 are provided with a clearance groove 2576 near the ends, respectively, and the clearance groove 2576 is used for clearance against the top member 2581.

Referring to fig. 6 and fig. 11-14, the rotating assembly 25 further includes a torsion mechanism 258, the torsion mechanism 258 is disposed between the two driven members 253, the torsion mechanism 258 includes a pushing portion 2537 disposed on at least one driven member 253, a pushing member 2581 slidably connected to the positioning seat 23, and an elastic member 2587, and the elastic member 2587 pushes the pushing member 2581 and the pushing portion 2537 to push against each other; when the follower 253 rotates relative to the positioning seat 23, the friction resistance between the pushing portion 2537 and the pushing portion 2581 positions the follower 253 relative to the positioning seat 23. Specifically, the abutting member 2581 is slidably received in the receiving groove 2355 of the positioning seat 23, the elastic member 2587 is received in the receiving groove 2355 of the positioning seat 23, and the elastic member 2587 elastically abuts against the abutting member 2581 and the abutting portion 2537. Preferably, the elastic member 2587 is a spring having a pre-elastic force. In other embodiments, the elastic member 2587 may be, but is not limited to, an elastic plastic or an elastic rubber, or the like.

In this embodiment, the torsion mechanism 258 includes two abutting members 2581 spaced apart from each other, the two abutting members 2581 are located between the two driven members 253 of the rotating assembly 25, and the elastic member 2587 is clamped by the two abutting members 2581, i.e. opposite ends of the elastic member 2587 elastically abut against the two abutting members 2581 respectively, so that the two abutting members 2581 abut against the two abutting portions 2537 respectively. Specifically, the two propping members 2581 are respectively received at opposite ends of the receiving groove 2355, and the propping members 2581 can slide along the receiving groove 2355, the elastic member 2587 is received in the receiving groove 2355, and the opposite ends of the elastic member 2587 respectively prop against the two propping members 2581, so that the two propping members 2581 respectively prop against the pushing portions 2537 of the two followers 253. When the two followers 253 rotate synchronously relative to the positioning seat 23, the two pushing parts 2537 and the two pushing parts 2581 respectively make the two followers 253 limit synchronously relative to the positioning seat 23.

The propping member 2581 includes a first propping portion 2582 and a second propping portion 2583 facing the propping portion 2537, and the first propping portion 2582 is closer to the middle supporting member 273 than the second propping portion 2583; when the first side support 271 and the second side support 271 'are in the flattened state, the pushing portion 2537 is positioned at the first pushing portion 2581 to position the follower 253 relative to the positioning seat 23, so that the first side support 271 and the second side support 271' are kept in the flattened state; when the first side support 271 and the second side support 271 'are folded, the pushing portion 2537 is positioned on the second pushing portion 2583, so that the follower 253 is positioned relative to the positioning seat 23, and the first side support 271 and the second side support 271' are kept folded. The positioning means that the follower 253 is stationary relative to the positioning seat 23 in the absence of an external force. Specifically, the abutting member 2581 includes an abutting plate, the first abutting portion 2582 and the second abutting portion 2583 are disposed on a side surface of the abutting plate facing the abutting portion 2537, and opposite ends of the elastic member 2587 abut against side surfaces of the two abutting plates facing away from the abutting portion 2537.

In this embodiment, the first supporting portion 2581 is a first positioning groove formed on the supporting member 2581, the second supporting portion 2583 is a second positioning groove formed on the supporting member 2581, and the supporting portion 2537 can be positioned in the first positioning groove or the second positioning groove, i.e. the protrusion on the follower 253 can be positioned in the first positioning groove or the second positioning groove. When the pushing portion 2537 is positioned in the first positioning groove, the two followers 253 are kept in a flattened state, so that the first side support 271 and the second side support 271' are kept in a flattened state; when the pushing portion 2537 is positioned in the second positioning groove, the two followers 253 maintain the folded state, so that the first side support 271 and the second side support 271' maintain the folded state.

In other embodiments, the pushing portion 2537 is a groove provided on the follower 253, the first pushing portion 2581 is a first protrusion provided on the pushing portion 2581, the second pushing portion 2583 is a second protrusion provided on the pushing portion 2581, and the first protrusion and the second protrusion can be respectively positioned in the groove. When the first protrusions are positioned at the grooves, the two followers 253 are kept in a flattened state, so that the two first side supports 271 and the second side supports 271' are kept in a flattened state; when the second protrusion is positioned at the second positioning groove, the two followers 253 maintain the folded state such that the first side support 271 and the second side support 271' maintain the folded state.

Preferably, the propping member 2581 further includes a middle propping member 2584 disposed between the first propping member 2582 and the second propping member 2583, during the rotation of the follower 253 relative to the positioning seat 23, the propping member 2537 slidably butts against the middle propping member 2584, and the friction resistance between the propping member 2537 and the middle propping member 2584 positions the follower 253 relative to the positioning seat 23, so that the first side supporting member 271 and the second side supporting member 271' have a hovering effect relative to the positioning seat 23, thereby providing the two frames 21 with a hovering function. Specifically, the middle abutment 2584 is disposed on a side of the abutment plate facing the abutment 2537 and between the first abutment 2582 and the second abutment 2583.

The middle abutment 2584 is slidably connected to the abutment 2537 by engagement of an abutment groove provided in one of the abutment 2581 and the follower 253 and a projection provided in the other of the abutment 2581 and the follower 253. In this embodiment, the abutment groove is disposed on the abutment member 2581, the abutment portion 2537 is a protrusion capable of sliding in the abutment groove, and the friction resistance between the protrusion and the inner surface of the abutment groove positions the follower 253 relative to the positioning seat 23; that is, the driven member 253 is positioned at any angle relative to the positioning seat 23 by the frictional resistance between the pushing portion 2537 and the middle pushing portion 2584 without external force, so that the first side supporting member 271 and the second side supporting member 271' have a hovering effect, and the two frames 21 have a hovering function.

In other embodiments, the abutment 2537 is an abutment groove provided on the follower 253, that is, the outer peripheral wall of the hinge 2532 is provided with an abutment groove, the middle abutment 2584 is a protrusion provided on the abutment 2581, the protrusion can slide along the abutment groove, the friction resistance between the protrusion and the inner surface of the abutment groove locates the follower 253 relative to the abutment 2581, locates the follower 2563 relative to the positioning seat 23, that is, the follower 253 is not subjected to external force, and the friction resistance between the protrusion and the abutment groove locates the follower 253 at any angle relative to the positioning seat 23, so that the first side support 271 and the second side support 271' have a hovering effect, and thus the two frames 21 have a hovering function.

Preferably, the included angle of positioning the follower 253 relative to the positioning seat 23 ranges from greater than or equal to 0 degrees to less than or equal to 90 degrees, i.e., the included angle of positioning the follower 253 with the positioning seat 23 may be, but is not limited to, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees, 70 degrees, 80 degrees, etc. The follower 253 is positioned relative to the positioning seat 23, so that an included angle between the two frames 21 rotating relative to the positioning seat 23 ranges from greater than or equal to 0 degrees to less than or equal to 180 degrees, specifically, when the included angle between the two frames 21 is 0 degrees, the electronic device 100 is in a folded state; when the included angle between the two frames 21 is 180 degrees, the electronic device 100 is in a flattened state; the two frames 21 may be positioned at any angle between greater than 0 degrees and less than 180 degrees, that is, the hovering angle of the electronic device 100 ranges from greater than 0 degrees to less than 180 degrees.

The torsion mechanism 258 of the rotating shaft device 22 comprises a propping piece 2581 and an elastic piece 2587 which are arranged on the positioning seat 23, and a propping portion 2537 on the driven piece 253, wherein friction resistance between the propping portion 2537 and the propping piece 2581 realizes positioning of a first side supporting piece 271 and a second side supporting piece 271' of the rotating shaft device 22 relative to the positioning seat 23, so that a hovering function of the electronic equipment 100 is realized. And the torsion mechanism 258 is simple and compact in structure and occupies less space of the rotating shaft device 22, so that the width of the rotating shaft device 22 is reduced, and the space occupied by the shell 20 is reduced.

The propping member 2581 further includes a positioning column 2585 disposed on a side of the propping plate away from the first propping member 2582, and an end portion of the elastic member 2587 is sleeved on the positioning column 2585 to position the elastic member 2587. The propping member 2581 further includes guiding sliding plates 2586 disposed on two opposite sides of the propping plate, the guiding sliding plates 2586 extend along the axial direction of the positioning column 2585, that is, the guiding sliding plates 2586 and the positioning column 2585 are located on the same side of the propping plate, and the two guiding sliding plates 2586 are used for respectively slidably contacting two opposite sides of the accommodating groove 2355. Further, the side edge of the sliding guide plate 2586 near the first propping portion 2582 is provided with a sliding guide edge, and the sliding guide edge slides along the surface of the positioning groove 2354 when the propping portion 2581 slides along the receiving groove 2355. Preferably, when the end of the elastic member 2587 is sleeved on the positioning post 2585, the two sliding guide plates 2586 clamp the elastic member 2587.

The torsion mechanism 258 further includes a mounting member 2588, the mounting member 2588 is configured to cover the abutting member 2581 and the elastic member 2587, and the mounting member 2588 is connected to the positioning seat 23, so that the abutting member 2581 and the elastic member 2587 are mounted to the positioning seat 23. Specifically, the mounting member 2588 is a plate body accommodated in the positioning groove 2354 of the positioning seat 23, the shape of the plate body is the same as that of the positioning groove 2354, in this embodiment, the positioning groove 2354 is a rectangular groove, and the mounting member 2588 is a rectangular plate positioned in the rectangular groove. The mounting member 2588 is provided with a through hole 2589 corresponding to the positioning hole 2356, and the locking member, such as a screw, is locked to the positioning hole 2356 through the through hole 2589, so that the mounting member 2588 is connected to the positioning seat 23.

As shown in fig. 6-10, the first side support 271 includes a rectangular support plate 2711, two opposite ends of a side of the back of the support plate 2711, which is far away from the positioning seat 23, are respectively provided with arc rails 2710, one side of the back of the support plate 2711, which is near the positioning seat 23, is provided with two support arms 2712 spaced apart from each other, the two support arms 2712 are near opposite ends of the support plate 2711, and the two support arms 2712 are respectively movably inserted into the avoidance grooves 2371 at opposite ends of the positioning seat 23. The support arm 2712 is an arcuate bar that extends from the support plate to a side remote from the arcuate rail 2710. The support arm 2712 is provided with a limit groove 2714 along the extending direction, the limit groove 2712 is an arc groove, and the middle part of the limit groove 2712 is bent towards one side far away from the support plate 2711; further, the limiting groove 2712 includes a first limiting segment 2714a and a second limiting segment 2714b at opposite ends thereof, the first limiting segment 2714a being closer to the support plate 2711 than the second limiting segment 2714b. When the first side supporting piece 271 and the second side supporting piece 271' are in a flattened state, the supporting shaft 2374 on the positioning seat 23 is limited to the first limiting segment 2714a; when the first side support 271 and the second side support 271' are in a folded state, the support shaft 2374 is limited to the second limiting segment 2714b. Preferably, the end of the support arm 2712 far from the support plate 2711 is provided with a avoidance port 2715, and the avoidance ports 2715 on the two support arms 2712 on the same end of the positioning seat 23 are opposite in position, namely, the first side face of one support arm 2712 is provided with the avoidance port 2715, and the second side face of the other support arm 2712 is provided with the avoidance port 2715, and the first side face and the second side face are opposite in orientation. When the first side supporting piece 271 and the second side supporting piece 271' are in the flattened state, the two supporting arms 2712 at the same end of the positioning seat 23 are mutually matched with each other at the end part far away from the supporting plate 2711, namely, the end part of one supporting arm 2712 is accommodated in the position avoiding opening 2715 of the other supporting arm 2712, so that the space occupied by the supporting arm 2712 in the length direction of the positioning seat 23 can be reduced, the connection between the elements of the rotating shaft device 22 is more compact, and the space of the accommodating groove 2332 of the positioning seat 23 can be increased, so that more electronic elements can be accommodated. The opposite ends of the side of the support plate 2711 provided with the support arms 2712 are provided with a avoidance groove 2716 near the corresponding support arms 2712, and the avoidance groove 2716 is used for avoiding the rotation member 251 and the driven member 253.

As shown in fig. 7 and 8, the rotating shaft device 22 further includes a back cover 28, and the back of the positioning seat 23 is accommodated in the back cover 28. Specifically, the back cover 28 is a bar frame, the back cover 28 has a receiving groove 280, and the positioning seat 23 is received in the receiving groove 280 and fixedly connected to the back cover 28. Preferably, the back cover 28 is provided with a glue layer on the inner surface of the accommodating groove 280, and the positioning seat 23 is connected to the positioning seat 23 through the glue layer. The connection between the positioning seat 23 and the back cover 28 can also be in a threaded connection or a clamping connection mode.

Referring to fig. 6-13, when the rotating shaft device 22 is assembled, two opposite ends of the elastic member 2587 are respectively sleeved on the positioning posts 2585 of the two propping members 2581, so that the two sliding guide plates 2586 of the propping members 2581 clamp the elastic member 2587; the two propping members 2581 and the elastic member 2587 are accommodated in the accommodating groove 2355 of the positioning seat 23, so that one side of the propping member 2581 away from the elastic member 2587 faces the corresponding avoidance groove 2353, namely the first propping member 2582, the second propping member 2583 and the middle propping member 2584 face the corresponding accommodating groove 2355, and the elastic member 2587 is elastically extruded to have pre-elastic force; inserting the connection shaft 2301 at the end of the positioning seat 23 into the shaft hole 2511 of the corresponding rotating member 251, respectively rotatably connecting two opposite ends of the positioning seat 23 with two rotating members 251, and rotatably inserting the anti-derailment 2304 into the corresponding anti-derailment slot 2513 to prevent the connection shaft 2301 from being separated from the shaft hole 2511 during rotation of the rotating member 251 relative to the positioning seat 23; the hinge portion 2532 of the follower 253 is rotatably connected to the positioning seat 23, specifically, the hinge portion 2532 is inserted into a corresponding avoidance groove 2353 on the positioning seat 23, the first connection hole 2538 of the hinge portion 2532 is opposite to the rotation hole 2302 of the positioning seat 23, the rotation shaft 2530 is inserted into the rotation hole 2302 and the first connection hole 2538, and the follower 253 is rotatably connected to the positioning seat 23; the sliding part 2534 of the follower 253 is accommodated in the guide chute 2518 of the rotating member 251, the second connecting hole 2539 is opposite to the limit groove 2519 of the rotating member 251, and the limit shaft 2531 is penetrated into the second connecting hole 2539 and the limit groove 2519; the mounting piece 2588 is clamped into the accommodating groove 2355 of the positioning seat 23, and the locking piece penetrates through the through hole 2589 of the mounting piece 2588 to be locked in the corresponding positioning hole 2356, so that the torsion mechanism 258 is mounted on the positioning seat 23; placing the middle supporting member 273 on the positioning seat 23, so that the guide sliding rails 2574 at two opposite ends of the middle supporting member 273 are respectively inserted into the corresponding guide sliding grooves 2357, and the eccentric shafts 2536 of each driven member 253 are inserted into the corresponding linkage grooves 2571; the first side supporting piece 271 and the second side supporting piece 271' are respectively placed on the rotating pieces 251 on two opposite sides of the positioning seat 23, so that the circular arc rails 2710 on two opposite ends of the first side supporting piece 271 are respectively rotatably penetrated into the circular arc rails 2516 on the rotating piece 251 of the first rotating mechanism 250, the circular arc rails 2710 on two opposite ends of the second side supporting piece 271' are respectively rotatably penetrated into the circular arc rails 2516 on the rotating piece 251 of the second rotating mechanism 250', the two supporting arms 2712 of the first side supporting piece 271 are respectively inserted into the two avoidance grooves 2371 of the positioning seat 23, the two supporting arms 2712 of the second side supporting piece 271' are respectively inserted into the two avoidance grooves 2371 of the positioning seat 23, each supporting shaft 2374 is penetrated into the corresponding limit groove 2714, at this time, the supporting shafts 2374 are slidably and rotatably penetrated into the corresponding limit grooves 2714, and the end parts of the first side supporting piece 271 and the second side supporting piece 271' are accommodated into the avoidance grooves 2517.

The back of the positioning seat 23 is accommodated in the accommodating groove 280 of the back cover 28, and the positioning seat 23 is connected to the back cover 28. When the two first side supporting members 271 and the second side supporting member 271 'are in the flattened state, the limiting shaft 2531 is limited to the corresponding first limiting section 2519a, the pushing portion 2537 is limited to the corresponding first pushing portion 2582, the supporting shaft 2374 is limited to the corresponding first limiting section 2714a, and the eccentric shaft 2536 is limited to the corresponding first stopping section 2571a, so that the rotating shaft device 22 is kept in the flattened state, i.e. the front surface of the first side supporting member 271, the front surface of the second side supporting member 271' and the front surface of the middle supporting member 273 are coplanar, and the distance between the middle supporting member 273 and the front surface of the positioning seat 23 is the largest. When the first side supporting member 271 and the second side supporting member 271 'are in the folded state, the limiting shaft 2531 is limited to the corresponding second limiting section 2519b, the pushing portion 2537 is positioned to the corresponding second pushing portion 2583, the supporting shaft 2374 is limited to the corresponding second limiting section 2714b, and the eccentric shaft 2536 is positioned to the corresponding second stopping section 2571b, so that the rotating shaft device 22 maintains the folded state, i.e. the front surface of the first side supporting member 271, the front surface of the second side supporting member 271' and the front surface of the middle supporting member 273 enclose a water drop space, and the space between the middle supporting member 273 and the front surface of the positioning seat 23 is minimum.

When the rotating members 251 on opposite sides of the positioning seat 23 rotate relative to the positioning seat 23 to close to each other or separate from each other, the rotating members 251 drive the corresponding driven members 253 to rotate relative to the positioning seat 23 to close to each other or separate from each other, the driven members 253 and the rotating members 251 slide relatively, the rotating members 251 and the corresponding side supporting members rotate relative to each other, and the supporting shafts 2374 move in the corresponding limiting grooves 2714 so as to enable the first side supporting members 271 and the second side supporting members 271' to fold or unfold relative to each other. Specifically, the rotating member 251 rotates relative to the positioning seat 23 and the corresponding shaft hole 2511 via the connection shaft 2301, the driven member 253 rotates relative to the positioning seat 23 around the corresponding rotation shaft 2530, and the limiting shaft 2531 at one end of the driven member 253 away from the positioning seat 23 slides in the corresponding limiting groove 2519, and the pushing portion 2537 of the driven member 253 slidably pushes against the pushing member 2581 so that the pushing portion 2537 moves among the first pushing portion 2582, the middle pushing portion 2584 and the second pushing portion 2583; meanwhile, the eccentric shafts 2536 of the followers 253 slide in the corresponding linkage grooves 2571 to drive the linkage members 2570 to slide along the guide grooves 2357 to realize linkage of the rotating shaft device 22, the middle supporting member 273 is close to or far from the positioning seat 23, the rotating members 251 of the first side supporting member 271 and the first rotating mechanism 250 rotate in a matched manner through the arc-shaped rails 2710 and the guide rails 2574, the rotating members 251 of the second side supporting member 271' and the second rotating mechanism 250' rotate in a matched manner through the arc-shaped rails 2710 and the guide rails 2574, and the supporting shafts 2374 rotate and slide in the corresponding limiting grooves 2714 to realize synchronous mutual folding or synchronous mutual unfolding of the first side supporting member 271 and the second side supporting member 271 '.

As shown in fig. 6-23, 25-30 and 32-37, when the rotating shaft device 22 is bent from the flattened state, one of the rotating members 251 rotates around the corresponding connecting shaft 2301 relative to the positioning seat 23 towards the other rotating member 251, the anti-derailment 2304 moves in the corresponding anti-derailment slot 2513, one of the rotating members 251 drives the corresponding follower 253 to rotate around the corresponding rotating shaft 2530 relative to the positioning seat 23, and the limiting shaft 2531 of the follower 253 slides in the corresponding limiting slot 2519, so that the follower 253 approaches the other follower 253; the rotation of the follower 253 relative to the positioning seat 23 drives the eccentric shaft 2536 to move in the corresponding linkage groove 2571, so that the linkage 2570 slides along the corresponding guide chute 2357 to approach the positioning seat 23, and the linkage 2570 drives the eccentric shaft 2536 of the other follower 253 to move in the corresponding linkage groove 2571, so that the other follower 253 synchronously rotates relative to the positioning seat 23 around the corresponding rotation shaft 2530, and the two followers 253 synchronously rotate relative to the positioning seat 23 to be close to each other; the other follower 253 drives the corresponding rotating member 251 to rotate around the corresponding connecting shaft 2301 so as to realize synchronous rotation of the two rotating members 251 relative to the positioning seat 23 and draw close to each other; meanwhile, in the process of rotating the rotating member 251 relative to the positioning seat 23, the rotating member 251 and the corresponding side supporting members rotate through the cooperation between the circular arc rail 2710 and the circular arc groove 2516, the supporting shaft 2374 on the positioning seat 23 slides and rotates in the limiting groove 2714 of the corresponding supporting arm 2712, that is, the supporting shaft 2374 slides and rotationally moves from the first limiting section 2714a of the limiting groove 2714 to the second limiting section 2714b, so that the first side supporting member 271 and the second side supporting member 271 'on two opposite sides of the positioning seat 23 are close to each other until the supporting shaft 2374 is limited to the second limiting section 2714b of the limiting groove 2714, and the front faces of the two first side supporting members 271 and the second side supporting member 271' and the front face of the middle supporting member 273 enclose a cross section into a water drop shape.

During the bending process of the first side support 271 relative to the positioning seat 23, the circular arc rail 2710 rotates in the corresponding circular arc groove 2516, and meanwhile, the limiting shaft 2531 slides in the corresponding limiting groove 2519 and rotates, so that the limiting shaft 2531 is displaced from the first limiting section 2519a to the second limiting section 2519b of the limiting groove 2519; meanwhile, the eccentric shafts 2536 slide in the corresponding linkage grooves 2571, so that the eccentric shafts 2536 move from the first stop sections 2571a to the second stop sections 2571b of the linkage grooves 2571, so as to drive the linkage members 2570 to move along the guide sliding grooves 2357 towards the position close to the positioning seat 23, namely, the guide sliding rails 2574 move along the corresponding guide sliding grooves 2357 towards the position close to the positioning seat 23; meanwhile, after the pushing portion 2537 pushes the pushing member 2581 to separate from the pushing of the first pushing portion 2582, the pushing portion 2537 and the middle pushing portion 2584 slidably push against each other, the elastic member 2587 is pressed by the pushing member 2581 to elastically deform until the pushing portion 2537 passes over the middle pushing portion 2584 to be positioned on the second pushing portion 2583, and the friction resistance between the pushing portion 2537 and the middle pushing portion 2584 enables the follower 253 to be positioned at any angle between 0 degrees and 90 degrees relative to the positioning seat 23; simultaneously, the support shaft 2374 slides from the first limiting segment 2714a of the limiting groove 2714 and rotationally moves to the second limiting segment 2714b, so that the rotating members 251 on two opposite sides of the positioning seat 23 are mutually closed and the driven members 253 on two opposite sides of the positioning seat 23 are mutually closed, so that the front surface of the first side supporting member 271, the front surface of the second side supporting member 271' and the front surface of the positioning seat 23 enclose a space with a cross section of a water drop shape. The angle enclosed by the follower 253 on two opposite sides of the positioning seat 23 and synchronously rotating relative to the positioning seat 23 is in direct proportion to the movement amount of the linkage 2570 relative to the positioning seat 23; specifically, the larger the included angle between the two followers 253, the larger the movement amount of the linkage 2570 relative to the positioning seat 23, and the smaller the included angle between the two followers 253, the smaller the movement amount of the linkage 2570 relative to the positioning seat 23; when the first side supporting piece 271 and the second side supporting piece 271' are in the flattened state, the included angle between the two driven pieces 253 is the largest, namely 180 degrees, and the interval between the linkage piece 2570 and the positioning seat 23 is the largest; when the first side supporting member 271 and the second side supporting member 271' are in the fully folded state, the included angle between the two driven members 253 is minimum, i.e. 0 degrees, and the interval between the linkage member 2570 and the positioning seat 23 is minimum.

In other bending modes, the two rotating members 251 can rotate together in opposite directions relative to the positioning seat 23 around the corresponding connecting shafts 2301, and the two rotating members 251 drive the corresponding driven members 253 to rotate relative to the positioning seat 23 around the corresponding rotating shafts 2530 to be close to each other; meanwhile, the limiting shaft 2531 at one end of the follower 253 far away from the positioning seat 23 slides in the corresponding limiting groove 2519, that is, the limiting shaft 2531 is displaced from the first limiting section 2519a to the second limiting section 2519b; the rotation of the follower 253 relative to the positioning seat 23 drives the eccentric shaft 2536 to move in the corresponding linkage groove 2571, namely, the eccentric shaft 2536 is displaced from the first stop section 2571a to the second stop section 2571b of the linkage groove 2571, so that the linkage member 2570 slides along the corresponding guide chute 2357 towards the position close to the positioning seat 23; after the pushing portion 2537 pushes the pushing member 2581 to separate from the pushing of the first pushing portion 2582, the pushing portion 2537 pushes the middle pushing portion 2584 in a sliding manner, the elastic member 2587 is pressed by the pushing member 2581 to be elastically deformed until the pushing portion 2537 passes over the middle pushing portion 2584 to be positioned on the second pushing portion 2583, and the friction resistance between the pushing portion 2537 and the middle pushing portion 2584 enables the follower 253 to be positioned at any angle between 0 degrees and 90 degrees relative to the positioning seat 23; namely, the included angle between the two followers 253 which are oppositely positioned ranges from 0 degrees to 180 degrees; the rotating member 251 and the corresponding side supporting member rotate through the cooperation between the circular arc rail 2710 and the circular arc groove 2516, the supporting shaft 2374 on the positioning seat 23 slides and rotates in the limiting groove 2714 of the corresponding supporting arm 2712, that is, the supporting shaft 2374 slides from the first limiting section 2714a of the limiting groove 2714 and rotationally moves to the second limiting section 2714b, so that the first side supporting member 271 and the second side supporting member 271 'on opposite sides of the positioning seat 23 are close to each other until the supporting shaft 2374 is limited to the second limiting section 2714b of the limiting groove 2714, and the front surface of the first side supporting member 271, the front surface of the second side supporting member 271' and the front surface of the middle supporting member 273 enclose a cross section to form a water drop shape.

When the rotating shaft device 22 is unfolded from the bending state, one rotating member 251 is unfolded far away from the other rotating member 251 relative to the positioning seat 23 around the corresponding connecting shaft 2301, the anti-derailing 2304 moves in the corresponding anti-derailing groove 2513, one rotating member 251 drives the driven member 253 to rotate relative to the positioning seat 23 around the corresponding rotating shaft 2530, and the limiting shaft 2531 of the driven member 253 slides in the corresponding limiting groove 2519, so that the driven member 253 is far away from the other driven member 253; the rotation of the follower 253 relative to the positioning seat 23 drives the eccentric shaft 2536 to move in the corresponding linkage groove 2571, so that the linkage 2570 slides along the corresponding guide chute 2357 to be far away from the positioning seat 23, and the linkage 2570 drives the eccentric shaft 2536 of the other follower 253 to move in the corresponding linkage groove 2571, so that the other follower 253 synchronously rotates relative to the positioning seat 23 around the corresponding rotation shaft 2530, and the two followers 253 synchronously rotate relative to the positioning seat 23 to be far away from each other; the other follower 253 drives the corresponding rotating member 251 to rotate around the corresponding connecting shaft 2301, so that the two rotating members 251 synchronously rotate relative to the positioning seat 23 and are far away from each other; meanwhile, in the process of rotating the rotating member 251 relative to the positioning seat 23, the rotating member 251 and the corresponding side supporting member rotate through the cooperation between the circular arc rail 2710 and the circular arc groove 2516, the supporting shaft 2374 on the positioning seat 23 slides and rotates in the limiting groove 2714 of the corresponding supporting arm 2712, that is, the supporting shaft 2374 slides and rotationally moves from the second limiting section 2714b of the limiting groove 2714 to the first limiting section 2714a, so that the first side supporting member 271 and the second side supporting member 271 'on two opposite sides of the positioning seat 23 are mutually far away until the supporting shaft 2374 is limited to the first limiting section 2714a of the limiting groove 2714, and the front surfaces of the first side supporting member 271 and the second side supporting member 271' and the front surface of the middle supporting member 273 enclose a cross section in a water drop shape.

During the flattening of the first and second side supports 271 and 271' relative to the positioning seat 23, the circular arc rail 2710 rotates in the corresponding circular arc groove 2516, and simultaneously, the limiting shaft 2531 slides and rotates in the corresponding limiting groove 2519, so that the limiting shaft 2531 is displaced from the second limiting section 2519b of the limiting groove 2519 to the first limiting section 2519a; meanwhile, the eccentric shafts 2536 slide in the corresponding linkage grooves 2571, so that the eccentric shafts 2536 move from the second stop sections 2571b to the first stop sections 2571a of the linkage grooves 2571, and the linkage members 2570 are driven to move away from the positioning seat 23 along the guide sliding grooves 2357, namely, the guide sliding rails 2574 move away from the positioning seat 23 along the corresponding guide sliding grooves 2357; meanwhile, after the pushing portion 2537 pushes the pushing member 2581 to separate from the pushing of the second pushing portion 2583, the pushing portion 2537 and the middle pushing portion 2584 slidably push against each other, the elastic member 2587 is pressed by the pushing member 2581 to elastically deform until the pushing portion 2537 passes over the middle pushing portion 2584 to be positioned on the first pushing portion 2582, and the friction resistance between the pushing portion 2537 and the middle pushing portion 2584 enables the follower 253 to be positioned at any angle between 0 degrees and 90 degrees relative to the positioning seat 23; simultaneously, the support shaft 2374 slides from the second limiting segment 2714b of the limiting groove 2714 and rotationally moves to the first limiting segment 2714a, so that the rotating members 251 on two opposite sides of the positioning seat 23 are away from each other, and the driven members 253 on two opposite sides of the positioning seat 23 are away from each other, so that the first side supporting member 271 and the second side supporting member 271 'are smoothly flattened until the front surface of the first side supporting member 271, the front surface of the second side supporting member 271' and the front surface of the positioning seat 23 are coplanar. The larger the included angle between the two followers 253 is, the larger the movement amount of the linkage 2570 relative to the positioning seat 23 is; when the first side supporting member 271 and the second side supporting member 271' are in the flattened state, the included angle between the two driven members 253 is the largest, i.e. 180 degrees, and the interval between the linkage member 2570 and the positioning seat 23 is the largest.

In other usage modes, the two rotating members 251 can be respectively rotated together around the corresponding connecting shafts 2301 in the direction away from each other relative to the positioning seat 23, and the two rotating members 251 respectively drive the corresponding driven members 253 to rotate around the corresponding rotating shafts 2530 relative to the positioning seat 23 so as to be away from each other; meanwhile, the limiting shaft 2531 at one end of the follower 253 far away from the positioning seat 23 slides in the corresponding limiting groove 2519, that is, the limiting shaft 2531 is displaced from the second limiting section 2519b to the first limiting section 2519a; the rotation of the follower 253 relative to the positioning seat 23 drives the eccentric shaft 2536 to move in the corresponding linkage groove 2571, namely, the eccentric shaft 2536 is displaced from the second stop section 2571b to the first stop section 2571a of the linkage groove 2571, so that the linkage member 2570 slides along the corresponding guide chute 2357 to be far away from the positioning seat 23; meanwhile, after the pushing portion 2537 pushes the pushing member 2581 to separate from the pushing of the second pushing portion 2583, the pushing portion 2537 and the middle pushing portion 2584 slidably push against each other, the elastic member 2587 is pressed by the pushing member 2581 to elastically deform until the pushing portion 2537 passes over the middle pushing portion 2584 to be positioned on the first pushing portion 2582, and the friction resistance between the pushing portion 2537 and the middle pushing portion 2584 enables the follower 253 to be positioned at any angle between 90 degrees and 0 degrees relative to the positioning seat 23; the rotating piece 251 and the corresponding side supporting piece rotate through the cooperation between the arc rail 2710 and the arc groove 2516, the supporting shaft 2374 on the positioning seat 23 slides and rotates in the limiting groove 2714 of the corresponding supporting arm 2712, that is, the supporting shaft 2374 slides from the second limiting section 2714b of the limiting groove 2714 and rotationally moves to the first limiting section 2714a, so that the first side supporting piece 271 and the second side supporting piece 271 'on two opposite sides of the positioning seat 23 are far away from each other until the supporting shaft 2374 is limited on the first limiting section 2714a of the limiting groove 2714, and at this time, the front face of the first side supporting piece 271 and the front face of the second side supporting piece 271' are flush with the front face of the positioning seat 23.

Referring to fig. 1-6, the installed rotating shaft device 22 is disposed between the two frames 21, and two opposite sides of the rotating shaft device 22 are fixedly connected with the two frames 21 respectively. Specifically, the first rotating mechanism 250 and the second rotating mechanism 250' on opposite sides of the back cover 28 are respectively accommodated in the mounting grooves 216 of the two frames 21, and one end of the rotating member 251 away from the back cover 28 is fixedly connected to the frames 21. At this time, the front faces 211 of the two frames 21, the front faces of the first side supports 271, the front faces of the second side supports 271' and the front faces 2311 of the middle supports 273 are coplanar. The back of the flexible screen 30 is connected to the front 211 of the two frames 21 and the front of the rotating shaft device 22; specifically, the bendable region 31 is attached to the front surface of the rotating shaft device 22, and the two non-bendable regions 33 are attached to the front surfaces 211 of the two frames 21, respectively. At this time, the rotating arm 2510 of the rotating member 251 is located at the outer side of the flexible screen 30, that is, the rotating arm 2510 is not located at the back of the flexible screen 30, that is, the rotating member 251 is located at the end of the positioning seat 23, so that the space occupied by the rotating member 251 on the front surface of the positioning seat 23 is reduced, and therefore, enough space is left on the front surface of the positioning seat 23 for placing heat dissipation materials or flexible flat cables, etc., and the space of the accommodating groove 2332 of the positioning seat 23 is larger, so that the positioning seat 23 is convenient for accommodating other elements; because the rotating member 251, the driven member 253, the first side supporting member 271 and the second side supporting member 271' are all directly connected to the positioning seat 23, the connection between the elements in the rotating shaft device 22 can be compact, so that the overall width of the rotating shaft device 22 is reduced, the internal space of the housing 20 is reduced, the layout of other elements such as a main board or a battery is facilitated, and the miniaturization of the electronic device 100 is facilitated; the rotating member 251 is rotatably connected with the positioning seat 23, the follower 253 is slidably connected with the rotating member 251, the first side supporting member 271 is rotatably connected with the rotating member 251 of the first rotating mechanism 250, and the second side supporting member 271 'is rotatably connected with the rotating member 251 of the second rotating mechanism 250', so that the connection between the elements of the rotating shaft device 22 is stable and firm, and the elements are not easy to shift when the electronic device 100 falls down, thereby avoiding damaging the flexible screen 30; the rotating shaft device 22 realizes synchronous folding or synchronous folding of the first side supporting piece 271 and the second side supporting piece 271' through the linkage mechanism 257, so that the use is convenient and the operation is simple; the rotation shaft device 22 realizes synchronous limit of the followers 253 on two opposite sides of the back cover 28 relative to the positioning seat 23 through the torsion mechanism 258, and the friction resistance between the pushing part 2537 and the middle pushing part 2584 enables the bendable region 31 of the flexible screen 30 to be positioned at any bending angle, so that the two frame bodies 21 can be freely adjusted in the unfolding state, the folding state and the middle state, namely, the electronic equipment 100 can be positioned in the unfolding state, the folding state and any middle state, so that a hovering function of 0-180 degrees is realized between the two frame bodies 21 of the electronic equipment 100, and the hovering angle range is large. The intermediate state refers to a folded state of the electronic device 100 when the pushing portion 2537 of the follower 253 and the intermediate pushing portion 2584 of the pushing member 2581 slidably push against each other, i.e. a folded state of the electronic device 100 in which an included angle between the two frames 21 is within a range of greater than 0 degrees and less than 180 degrees.

Referring to fig. 24-37, when bending the electronic device 100, a bending force is applied to at least one of the two frames 21 of the electronic device 100, so that the first rotating mechanism 250 and the second rotating mechanism 250 'connected to the two frames 21 rotate relative to the positioning seat 23 and move towards each other, the rotating member 251 and the driven member 253 of the first rotating mechanism 250 are slidably connected to the limiting slot 2519 through the cooperation of the limiting shaft 2531, the rotating member 251 and the driven member 253 of the second rotating mechanism 250' are slidably connected to the limiting slot 2519 through the cooperation of the limiting shaft 2531, the first side supporting member 271 and the second side supporting member 271 'rotate relative to the rotating member 251 of the first rotating mechanism 250 and the second rotating mechanism 250', and the first side supporting member 271 'and the second side supporting member 271' are slidably and rotatably connected to the positioning seat 23 through the cooperation of the supporting shaft 2374 and the guiding slot 2357, so as to fold the rotating shaft device 22, and the bendable region 31 of the flexible screen 30 bends along with the rotating shaft device 22. Specifically, a bending force is applied to one of the frames 21, the frame 21 drives the corresponding rotating member 251 to rotate relative to the positioning seat 23, drives the driven member 253 to rotate relative to the positioning seat 23, and the limiting shaft 2531 of the driven member 253 slides in the corresponding limiting groove 2519, so that the rotating member 251 and the driven member 253 rotate to a side close to the flexible screen 30 relative to the positioning seat 23; meanwhile, the eccentric shafts 2536 of the followers 253 move in the corresponding linkage grooves 2571, so that the linkage members 2570 slide along the corresponding guide sliding grooves 2357 towards the position seat 23, the linkage members 2570 drive the eccentric shafts 2536 of the other followers 253 to move in the corresponding linkage grooves 2571, and the other followers 253 synchronously rotate relative to the position seat 23 around the corresponding rotating shafts 2530, so that the two followers 253 synchronously rotate relative to the position seat 23 and are close to each other; the other follower 253 drives the corresponding rotating member 251 to rotate around the corresponding connecting shaft 2301 so as to realize synchronous rotation of the two rotating members 251 relative to the positioning seat 23 and draw close to each other; meanwhile, the rotating member 251 and the corresponding side supporting member rotate through the cooperation between the circular arc rail 2710 and the circular arc groove 2516, the supporting shaft 2374 on the positioning seat 23 slides and rotates in the limiting groove 2714 of the corresponding supporting arm 2712, namely, the supporting shaft 2374 slides from the first limiting section 2714a of the limiting groove 2714 and rotationally moves to the second limiting section 2714b, so that the first side supporting member 271 and the second side supporting member 271 'on the opposite sides of the positioning seat 23 are mutually closed until the supporting shaft 2374 is limited to the second limiting section 2714b of the limiting groove 2714, and the front face of the first side supporting member 271, the front face of the second side supporting member 271' and the front face of the middle supporting member 273 enclose a cross section to form a water drop shape; the bendable region 31 of the flexible screen 30 is bent along with the rotating shaft device 22 until the bendable region 31 is bent into a water droplet shape, thereby realizing the folding of the electronic device 100.

In the process of bending the electronic device 100, the middle supporting member 273 is close to the positioning seat 23, so that a water drop-shaped space surrounded by the front surface of the middle supporting member 273, the front surface of the first side supporting member 271 and the front surface of the second side supporting member 271' is larger, the bendable region 31 of the flexible screen 30 is convenient to bend and enclose a water drop shape, the duty ratio of the bent bendable region 31 is reduced, and the overall thickness of the electronic device 100 can be reduced.

In other bending modes of the electronic device 100, bending forces can be applied to the two frames 21 at the same time, the two frames 21 respectively drive the first rotating mechanism 250 and the second rotating mechanism 250' to rotate towards the side close to the flexible screen 30, and drive the first side supporting member 271 and the second side supporting member to approach each other, and the middle supporting member 273 moves towards the side far from the flexible screen 30, and bending of the electronic device 100 is realized through the rotating shaft device 22.

When the electronic device 100 needs to be flattened, a spreading force is applied to at least one of the two frames 21 of the electronic device 100, so that the first rotating mechanism 250 and the second rotating mechanism 250' connected to the two frames 21 rotate relative to the positioning seat 23 and move away from each other, the rotating member 251 and the follower 253 of the first rotating mechanism 250 slide relative to each other through the cooperation of the limiting shaft 2531 and the limiting slot 2519, the rotating member 251 and the follower 253 of the second rotating mechanism 250' slide relative to each other through the cooperation of the limiting shaft 2531 and the limiting slot 2519, the first side supporting member 271 and the second side supporting member 271' rotate relative to the rotating member 251 of the first rotating mechanism 250 and the rotating member 251 of the second rotating mechanism 250', and the first side supporting member 271 and the second side supporting member 271' slide relative to the positioning seat 23 through the cooperation of the supporting shaft 2374 and the guiding slot 2357, respectively, so that the bendable region 31 of the flexible screen 30 is flattened along with the rotating shaft device 22. Specifically, a spreading force is applied to one of the frames 21, the frame 21 drives the corresponding rotating member 251 to rotate relative to the positioning seat 23, the rotating member 251 drives the driven member 253 to rotate relative to the positioning seat 23, and the limiting shaft 2531 of the driven member 253 slides in the corresponding limiting groove 2519, so that the rotating member 251 and the driven member 253 rotate relative to the positioning seat 23 to a side far away from the flexible screen 30; meanwhile, the eccentric shafts 2536 of the followers 253 move in the corresponding linkage grooves 2571, so that the linkage members 2570 slide along the corresponding guide sliding grooves 2357 away from the positioning seat 23, the linkage members 2570 drive the eccentric shafts 2536 of the other followers 253 to move in the corresponding linkage grooves 2571, and the other followers 253 synchronously rotate relative to the positioning seat 23 around the corresponding rotating shafts 2530, so that the two followers 253 synchronously rotate relative to the positioning seat 23 and are away from each other; the other follower 253 drives the corresponding rotating member 251 to rotate around the corresponding connecting shaft 2301, so that the two rotating members 251 synchronously rotate relative to the positioning seat 23 and are far away from each other; meanwhile, the rotating member 251 and the corresponding side supporting member rotate through the cooperation between the circular arc rail 2710 and the circular arc groove 2516, the supporting shaft 2374 on the positioning seat 23 slides and rotates in the limiting groove 2714 of the corresponding supporting arm 2712, that is, the supporting shaft 2374 slides from the second limiting section 2714b of the limiting groove 2714 and rotationally moves to the first limiting section 2714a, so that the first side supporting member 271 and the second side supporting member 271' on the opposite sides of the positioning seat 23 are far away from each other until the supporting shaft 2374 is limited to the first limiting section 2714a of the limiting groove 2714, so that the first side supporting member 271 and the second side supporting member 271' on the opposite sides of the positioning seat 23 are mutually unfolded until the first side supporting member 271 and the second side supporting member 271' are flattened with the positioning seat 23, and the bendable region 31 of the flexible screen 30 is unfolded along with the rotating shaft device 22 until the flexible screen 30 is flattened.

In other unfolding modes of the electronic device 100, an outward pulling force may be applied to the two frames 21 at the same time, and the two frames 21 respectively drive the first rotating mechanism 250 and the second rotating mechanism 250 'to rotate relative to a side far away from the flexible screen 30, so that the first side supporting member 271 and the second side supporting member 271' rotate relative to a side far away from the flexible screen 30, and the electronic device 100 is unfolded through the rotating shaft device 22.

The rotating shaft device 22 of the electronic device 100 of the present invention is bent or unfolded by the rotating assembly 25, and because the rotating member 251 and the driven member 253 of the rotating assembly 25 are both rotatably connected to the positioning seat 23, the first side supporting member 271 and the second side supporting member 271' are cooperatively connected with the positioning seat 23 by the supporting shaft 2374 and the guiding chute 2357; therefore, the connection between the components in the rotating shaft device 22 can be compact, so that the overall width of the rotating shaft device 22 is reduced, the internal space of the shell 20 is reduced, and the layout of other components such as a main board or a battery is facilitated. Secondly, the rotating shaft device 22 realizes synchronous folding or synchronous flattening of the first side supporting piece 271 and the second side supporting piece 271' through the linkage mechanism 257, so that the operation is convenient; in addition, the rotating shaft device 22 realizes hovering through the torsion mechanism 258, so that the two frames 21 of the electronic equipment 100 realize a larger-range hovering function, namely, the hovering effect of an included angle between the two frames 21 is between 0 degrees and 180 degrees can be realized. When the electronic device 100 is in the flattened state, the eccentric shaft 2536 supports the linkage 2570, and the linkage 2570 supports the bendable region 31 of the flexible screen 30, so that the front surface of the first side support 271, the front surface of the second side support 271' and the front surface of the middle support 273 are kept coplanar, and the side support plates can stably support the flexible screen 30, thereby preventing the flexible screen 30 from sinking and being damaged.

The foregoing is a description of embodiments of the present invention, and it should be noted that, for those skilled in the art, modifications and variations can be made without departing from the principles of the embodiments of the present invention, and such modifications and variations are also considered to be within the scope of the present invention.

Claims

1. A spindle assembly, the spindle assembly comprising:

the positioning seat comprises a connecting part arranged at the end part of the positioning seat;

the rotating assembly comprises a first rotating mechanism and a second rotating mechanism which are arranged on two opposite sides of the positioning seat, the first rotating mechanism and the second rotating mechanism comprise rotating pieces and driven pieces, the rotating pieces of the first rotating mechanism and the second rotating mechanism are respectively and rotationally connected with the connecting parts, the driven pieces of the first rotating mechanism and the second rotating mechanism are respectively and rotationally connected with the positioning seat, one end of the driven piece of the first rotating mechanism, which is far away from the positioning seat, is slidingly connected with the rotating piece of the first rotating mechanism, and one end of the driven piece of the second rotating mechanism, which is far away from the positioning seat, is slidingly connected with the rotating piece of the second rotating mechanism; and

The support assembly comprises a first side support piece and a second side support piece which are arranged on two opposite sides of the positioning seat, the first side support piece is rotationally connected with the rotating piece of the first rotating mechanism, the second side support piece is rotationally connected with the rotating piece of the second rotating mechanism, and the first side support piece and the second side support piece are respectively and movably connected with the positioning seat;

when the rotating parts of the first rotating mechanism and the second rotating mechanism rotate relative to the positioning seat to be close to each other, the driven parts of the first rotating mechanism and the driven parts of the second rotating mechanism rotate relative to the positioning seat, one end of the driven part of the first rotating mechanism far away from the positioning seat slides relative to the rotating parts of the first rotating mechanism, one end of the driven part of the second rotating mechanism far away from the positioning seat slides relative to the rotating parts of the second rotating mechanism, the first side supporting parts and the rotating parts of the first rotating mechanism rotate mutually, the second side supporting parts and the rotating parts of the second rotating mechanism rotate mutually, and the first side supporting parts and the second side supporting parts rotate relative to the positioning seat to be close to each other respectively, so that the first side supporting parts and the second side supporting parts are folded mutually; when the rotating parts of the first rotating mechanism and the second rotating mechanism rotate relative to the positioning seat respectively and are far away from each other, the driven parts of the first rotating mechanism and the driven parts of the second rotating mechanism rotate relative to the positioning seat respectively, one end of the driven parts of the first rotating mechanism far away from the positioning seat slides relative to the rotating parts of the first rotating mechanism, one end of the driven parts of the second rotating mechanism far away from the positioning seat slides relative to the rotating parts of the second rotating mechanism, the first side supporting parts and the rotating parts of the first rotating mechanism rotate mutually, the second side supporting parts and the rotating parts of the second rotating mechanism rotate mutually, and the first side supporting parts and the second side supporting parts slide relative to the positioning seat and rotate mutually and are far away from each other so as to realize mutual unfolding of the first side supporting parts and the second side supporting parts.

2. The rotary shaft device according to claim 1, wherein in the first rotary mechanism and the second rotary mechanism, a first axis of rotation between the rotary member and the positioning seat is parallel to a second axis of rotation between the driven member and the positioning seat, and a first axis of rotation on the same side of the positioning seat is closer to a center line of the positioning seat than the second axis of rotation.

3. The rotary shaft device according to claim 2, wherein the connecting portion and the rotary member are rotatably connected by a coupling shaft with a shaft hole, the shaft axis of the coupling shaft is collinear with the corresponding first rotary shaft axis, the coupling shaft is provided at one of the connecting portion and the rotary member, and the shaft hole is provided at the other of the connecting portion and the rotary member.

4. The rotating shaft device according to claim 2, wherein the rotating member includes a rotating arm and a rotating portion connected to the rotating arm, an end of the rotating arm away from the rotating portion is rotatably connected to the connecting portion through cooperation of a connecting shaft and a shaft hole, the connecting shaft is provided to one of the rotating arm and the connecting portion, the shaft hole is provided to the other of the rotating arm and the connecting portion, and an end of the driven member away from the positioning seat is slidably connected to the rotating portion.

5. The rotating shaft device according to claim 4, wherein an anti-derailing groove and an anti-derailing rail are provided between the rotating arm and the connecting portion, the anti-derailing rail is engaged with the anti-derailing groove to prevent the rotating arm from being separated from the connecting portion, the anti-derailing groove is provided at one of the connecting portion and the rotating arm, and the anti-derailing rail is provided at the other of the connecting portion and the rotating arm.

6. The rotating shaft device according to claim 4, wherein the rotating portion is located at an end of the rotating arm away from the positioning seat, an end face of the first side supporting member or an end face of the second side supporting member is close to the corresponding rotating arm, the first side supporting member and the second side supporting member are respectively and rotatably connected with the corresponding rotating member through cooperation of an arc groove and an arc rail, the arc groove is formed in one of the first side supporting member and the rotating member, the arc rail is formed in the other of the first side supporting member and the rotating member, the arc groove is formed in the other of the second side supporting member and the corresponding rotating member, the arc rail is formed in the other of the second side supporting member and the corresponding rotating member, and an axis of the arc groove is parallel to the first rotating axis.

7. The apparatus according to claim 6, wherein the rotating arm is connected to one end of the rotating portion, the rotating arm protrudes from a surface of the rotating portion facing the supporting component, the rotating arm and the rotating portion enclose a clearance groove, and an end of the supporting component is accommodated in the clearance groove.

8. The spindle apparatus of claim 2 wherein the follower and the positioning seat are rotatably coupled by a shaft co-ordinated with a rotation bore, the shaft axis of the shaft being collinear with a corresponding second rotation axis, the shaft being disposed in one of the follower and the positioning seat, the rotation bore being disposed in the other of the follower and the positioning seat.

9. The rotary shaft device according to claim 2, wherein the driven member and the rotary member are slidably connected by a fit between a limit groove and a limit shaft, an axis of the limit shaft is parallel to the first rotary shaft, the limit groove is provided in one of the driven member and the rotary member, and the limit shaft is provided in the other of the driven member and the rotary member.

10. The apparatus of claim 9, wherein the limiting slot includes a first limiting section and a second limiting section at opposite ends thereof, the first limiting section being farther from the positioning seat than the second limiting section; when the two first side supporting pieces and the second side supporting pieces are in a flattened state, the limiting shaft is limited at the first limiting section; when the first side supporting piece and the second side supporting piece are in a folding state, the limiting shaft is limited at the second limiting section.

11. The spindle apparatus of claim 2, wherein the rotating assembly further comprises a linkage mechanism disposed between the driven member of the first rotating mechanism and the driven member of the second rotating mechanism, the driven member of the first rotating mechanism rotating relative to the positioning seat through the linkage mechanism such that the driven member of the second rotating mechanism rotates synchronously relative to the positioning seat; or the driven piece of the second rotating mechanism rotates relative to the positioning seat through the linkage mechanism so that the driven piece of the first rotating mechanism synchronously rotates relative to the positioning seat.

12. The rotating shaft device according to claim 11, wherein the linkage mechanism comprises an eccentric shaft and a linkage member which are arranged on the driven member, linkage grooves are respectively arranged at opposite ends of the linkage member, the linkage grooves extend along a direction perpendicular to the second rotating axis, the axis of the eccentric shaft is parallel to the second rotating axis at intervals, and the eccentric shaft of the driven member of the first rotating mechanism and the eccentric shaft of the driven member of the second rotating mechanism are respectively inserted into the two linkage grooves of the linkage member in a sliding manner; when the driven piece of the first rotating mechanism rotates relative to the positioning seat, the eccentric shaft on the driven piece of the first rotating mechanism moves in the corresponding linkage groove, and the linkage piece moves along the direction perpendicular to the second rotating axis, so that the eccentric shaft on the driven piece of the second rotating mechanism synchronously moves in the corresponding linkage groove, and the driven piece of the second rotating mechanism synchronously rotates relative to the positioning seat.

13. The apparatus of claim 12, wherein the linkage groove includes a first stop segment and a second stop segment at opposite ends thereof, the first stop segment being farther from a centerline of the positioning seat than the second stop segment; when the first side support and the second side support are in a flattened state, the eccentric shaft is limited to the first stop section, and when the first side support and the second side support are in a folded state, the eccentric shaft is limited to the second stop section.

14. The apparatus according to claim 12, wherein the linkage member and the positioning seat are slidably connected by a mating of a guide chute and a guide rail, the guide chute extending in a moving direction of the linkage member, the guide chute being provided on one of the linkage member and the positioning seat, the guide rail being provided on the other of the linkage member and the positioning seat.

15. The spindle apparatus of claim 12 wherein the support assembly further comprises a middle support member positioned between the first side support member and the second side support member, the middle support member being connected to the linkage member, the middle support member moving with the linkage member; when the first side support and the second side support are in a flattened state, the front face of the middle support, the front face of the first side support, and the front face of the second side support are coplanar.

16. The apparatus according to claim 2, wherein the rotating assembly further comprises a torsion mechanism disposed between the driven member of the first rotating mechanism and the driven member of the second rotating mechanism, the torsion mechanism including a pushing portion disposed on the driven member, a pushing member slidably connected to the positioning seat, and an elastic member, the elastic member pushing the pushing member and the pushing portion against each other, and when the driven member rotates relative to the positioning seat, a frictional resistance between the pushing portion and the pushing member positions the driven member relative to the positioning seat.

17. The rotating shaft device according to claim 16, wherein the pushing portions are provided on the followers on opposite sides of the positioning seat, two pushing members spaced apart from each other are provided between the follower of the first rotating mechanism and the follower of the second rotating mechanism, the elastic member is clamped by the two pushing members, and the two pushing members respectively push against the two pushing portions.

18. The spindle apparatus of claim 17 wherein the abutment includes first and second abutments facing the abutment, the first abutment being closer to the support assembly than the second abutment; when the first side support piece and the second side support piece are in a flattened state, the pushing part is positioned at the first pushing part; when the first side support piece and the second side support piece are in a folded state, the pushing part is positioned at the second pushing part.

19. The apparatus according to claim 18, wherein the pushing portion is a protrusion provided on the driven member, the first pushing portion is a first positioning groove provided on the pushing member, the second pushing portion is a second positioning groove provided on the pushing member, and the protrusion can be positioned in the first positioning groove or the second positioning groove.

20. The apparatus according to claim 18, wherein the abutment further comprises an intermediate abutment disposed between the first abutment and the second abutment, the follower being slidably abutted against the intermediate abutment during rotation of the positioning seat, and frictional resistance between the abutment and the intermediate abutment positioning the follower relative to the positioning seat.

21. The spindle apparatus of claim 20 wherein the intermediate abutment and the abutment are slidably coupled by a mating of an abutment groove provided in one of the abutment and the follower and a projection provided in the other of the abutment and the follower.

22. A spindle apparatus according to claim 20, wherein the follower is rotationally fixed relative to the positioning seat at an included angle in the range of 0 degrees or more and 90 degrees or less.

23. The rotary shaft device according to claim 16, wherein the positioning seat is provided with a receiving groove, the receiving groove extends along a moving direction of the abutting member, the abutting member is slidingly received in the receiving groove, and the torsion mechanism further comprises a mounting member, the mounting member covers the abutting member, and the mounting member is connected to the positioning seat.

24. A folding casing, characterized in that the folding casing comprises a rotating shaft device according to any one of claims 1-23 and two frames, wherein the rotating shaft device is positioned between the two frames, and the two frames are respectively connected to a rotating member of a first rotating mechanism and a rotating member of a second rotating mechanism of the rotating assembly of the rotating shaft device.

25. An electronic device, comprising a flexible screen, two frames and a rotating shaft device according to any one of claims 1-23, wherein the rotating shaft device is located between the two frames, the rotating parts of the first rotating mechanism and the rotating parts of the second rotating mechanism on two opposite sides of the rotating shaft device are respectively connected to the two frames, and the flexible screen is arranged on the front surfaces of the two frames and the front surface of the rotating shaft device.

26. The electronic device of claim 25, wherein the flexible screen covers the first side support and the second side support of the hinge assembly, and wherein the rotating arm of the rotating member of the first rotating mechanism and the rotating arm of the rotating member of the second rotating mechanism are located outside the flexible screen.