CN117189758A

CN117189758A - Rotating shaft device, folding shell and electronic equipment

Info

Publication number: CN117189758A
Application number: CN202210611570.9A
Authority: CN
Inventors: 张斌; 黄宏东; 潘泽升; 梁子豪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-12-08

Abstract

The application provides a rotating shaft device, which comprises a supporting mechanism, a rotating assembly and a driven assembly, wherein the supporting mechanism comprises a side supporting piece; the rotating assembly comprises a fixed seat and rotating mechanisms arranged on two opposite sides of the fixed seat, the rotating mechanisms comprise rotating pieces and connecting pieces, and two opposite ends of the rotating pieces are respectively and rotatably connected with the fixed seat and the connecting pieces; the driven component comprises two driven parts, one end of each driven part is rotationally connected with the fixed seat, and the other opposite end of each driven part is respectively connected with the connecting part and the side part supporting part in a sliding and rotating manner; the rotating piece is connected with the side supporting piece, and the connecting piece is connected with the side supporting piece in a rotating mode. The application also provides a folding shell with the rotating shaft device and electronic equipment.

Description

Rotating shaft device, folding shell and electronic equipment

Technical Field

The application 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 has appeared, and the folding scheme of the bendable flexible display screen at present comprises inner folding and outer folding, wherein the inner folding flexible display screen comprises a U-shaped folding screen and a water drop type folding screen; among them, the water drop type folding screen product is more and more popular with people with the characteristics of frivolity and miniaturization. In the related art, the water drop type folding screen is generally supported by a rotating shaft device, however, at present, most rotating shaft motion constraint designs of the rotating shaft device are single, so that the rotating shaft device is inflexible to adjust, and the constraint reliability of the rotating shaft device in the folding or unfolding process is affected.

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 application provides a rotating shaft device which comprises a supporting mechanism, a rotating assembly and a driven assembly, wherein the supporting mechanism comprises two side supporting pieces; the rotating assembly comprises a fixed seat and rotating mechanisms arranged on two opposite sides of the fixed seat, the rotating mechanisms comprise rotating pieces and connecting pieces, and two opposite ends of the rotating pieces are respectively connected with the fixed seat and the connecting pieces in a rotating way; the driven assembly comprises two driven parts, one end of each driven part is rotationally connected with the corresponding fixed seat, and the other end of each driven part far away from the corresponding fixed seat is respectively connected with the corresponding connecting piece and the corresponding side supporting piece; the rotating piece is connected with the side supporting piece, and the connecting piece is rotationally connected with the side supporting piece; when the two connecting pieces are mutually closed, the two rotating pieces rotate relative to the positioning seat and the connecting pieces to be mutually closed, the rotating pieces are connected with the corresponding side supporting pieces in a sliding and rotating mode, the two driven pieces rotate relative to the positioning seat, and one end, away from the fixed seat, of each driven piece slides relative to the connecting piece and the corresponding side supporting piece and rotates to enable the two driven pieces to be mutually closed, so that the two side supporting pieces are mutually folded; when the two connecting pieces are far away from each other, the two rotating pieces rotate relative to the positioning seat and the connecting pieces to be far away from each other, the rotating pieces are connected with the corresponding side supporting pieces in a sliding and rotating mode, the two driven pieces rotate relative to the positioning seat, and one end, far away from the fixing seat, of the driven pieces slides and rotates relative to the connecting pieces and the side supporting pieces to enable the two driven pieces to be far away from each other, so that the two side supporting pieces are unfolded mutually.

The rotating piece and the side supporting piece are connected in a sliding and rotating manner through the cooperation of a first limiting groove and a first limiting part, the first limiting groove is formed in one of the rotating piece and the side supporting piece, and the first limiting part is formed in the other of the rotating piece and the side supporting piece.

In some embodiments, the first limiting groove includes a first limiting section and a second limiting section at opposite ends thereof, the first limiting section being closer to the fixing base than the second limiting section; when the side support piece is in a flattening state relative to the fixed seat, the first limiting part is limited on the second limiting section; when the side supporting piece is in a complete bending state relative to the fixing seat, the first limiting part is limited on the first limiting section.

In some embodiments, the side support member includes a side support plate, a first bump is disposed on a back surface of the side support plate, the first limit groove is disposed on a side of the first bump, which is close to the fixing base, the first limit groove is bent away from a side of the side support plate, and the first limit portion includes a first limit shaft connected to the rotating member and penetrating through the first limit groove.

In some embodiments, the driven member and the side support member are slidably and rotatably connected by a second limit groove and a second limit portion, the second limit groove is provided on one of the driven member and the side support member, and the second limit portion is provided on the other of the driven member and the side support member; the driven piece and the connecting piece are connected in a sliding and rotating manner through the matching of a third limiting groove and a third limiting part, the third limiting groove is formed in one of the driven piece and the connecting piece, and the third limiting part is formed in the other of the driven piece and the connecting piece.

In some embodiments, the second limiting groove includes a first limiting section and a second limiting section at opposite ends thereof, the first limiting section being closer to the fixing base than the second limiting section; the third limiting groove comprises a first limiting section and a second limiting section at two opposite ends, and the first limiting section of the third limiting groove is closer to the fixing seat than the second limiting section; when the side supporting piece is in a flattening state relative to the fixing seat, the second limiting part is limited on the second limiting section of the second limiting groove, and the third limiting part is limited on the second limiting section of the third limiting groove; when the side supporting piece is in a complete bending state relative to the fixing seat, the second limiting part is limited on the first limiting section of the second limiting groove, and the third limiting part is limited on the first limiting section of the third limiting groove.

In some embodiments, the side support includes a side support plate, the follower is located on a back side of the side support plate, and the second limit groove and the third limit groove are each curved to a side away from the side support plate.

In some embodiments, the back of the side supporting plate is provided with a second bump, the second limiting groove is formed in the second bump, the third limiting groove is formed in the connecting piece, the second limiting portion comprises a second limiting shaft connected to the driven piece and penetrating through the second limiting groove, and the third limiting portion comprises a third limiting shaft connected to the driven piece and penetrating through the third limiting groove.

In some embodiments, a clearance groove is formed at an end of the driven member away from the fixing seat, the clearance groove is used for accommodating the second bump, and the second limiting shaft and the third limiting shaft are coaxial.

In some embodiments, the rotating shaft device further includes a positioning mechanism, the positioning mechanism includes a positioning member, the positioning member is rotationally connected with the fixing seat, the positioning member is slidably connected with the connecting member, and one end of the positioning member, which is far away from the fixing seat, is movably connected with the side supporting member.

In some embodiments, the positioning piece and the side supporting piece are connected in a sliding and rotating manner through the matching of a fourth limiting groove and a fourth limiting part, the fourth limiting groove is formed in one of the positioning piece and the side supporting piece, and the fourth limiting part is formed in the other of the positioning piece and the side supporting piece.

In some embodiments, the fourth limiting groove includes a first limiting section and a second limiting section at opposite ends thereof, the first limiting section being closer to the fixing base than the second limiting section; when the side support piece is in a flattening state relative to the fixed seat, the first limiting part is limited on the second limiting section; when the side supporting piece is in a complete bending state relative to the fixing seat, the first limiting part is limited on the first limiting section.

In some embodiments, the side support member includes a side support plate, a third bump is disposed on a back surface of the side support plate, the fourth limiting groove is disposed on the third bump, the fourth limiting groove is bent to a side far away from the side support plate, and the fourth limiting portion includes a fourth limiting shaft connected to the positioning member and penetrating into the fourth limiting groove.

In some embodiments, a clearance groove is formed at an end of the positioning element away from the fixing seat, and the third bump is accommodated in the clearance groove.

In some embodiments, a stop part is arranged at the position of the connecting piece corresponding to the positioning piece, and a propping part is arranged at one end, close to the fixed seat, of the fourth limiting groove of the third lug; when the side supporting piece is in a complete bending state relative to the fixing seat, the first end of the fourth limiting shaft abuts against the abutting portion, so that the second end of the fourth limiting shaft is matched with the stopping portion in a stopping position.

In some embodiments, the positioning mechanism further comprises a resilient member having a pre-spring force for driving the second end of the fourth limiting shaft out of engagement with the stop.

In some embodiments, a sliding guide surface is disposed at an end of the abutment portion away from the fixing seat, and in the process that the side support member is bent relative to the fixing seat, the first end of the fourth limiting shaft slidably abuts against the sliding guide surface, so that the second end of the fourth limiting shaft moves towards the stop portion, and the elastic member is elastically deformed until the second end of the fourth limiting shaft is in stop fit with the stop portion.

In some embodiments, the positioning piece comprises a positioning part, the positioning part is arranged on one side of the positioning piece away from the fixing seat, the side support piece comprises a side support plate and a blocking part, and the blocking part is arranged on one side of the side support plate away from the fixing seat; when the side supporting piece is in a complete bending state relative to the fixing seat, the positioning part is matched with the blocking part in a stopping position.

In some embodiments, the positioning piece is connected with the connecting piece through the cooperation of a guide sliding groove and a guide sliding rail, the guide sliding groove extends along the direction perpendicular to the axis of rotation between the positioning piece and the fixing seat, the guide sliding groove is arranged on one of the positioning piece and the connecting piece, and the guide sliding rail is arranged on the other one of the positioning piece and the connecting piece.

The application also provides a folding shell, which comprises a rotating shaft device and two frame bodies, wherein the rotating shaft device is positioned between the two frame bodies, the two frame bodies are respectively connected with connecting pieces of the two rotating mechanisms of the rotating shaft device, and the two frame bodies are mutually folded or mutually unfolded through the rotating shaft device.

In some embodiments, a positioning part is arranged on one side of the side support piece of the rotating shaft device, which is away from the fixed seat, and a clamping part is arranged on one side of the frame body, which is close to the rotating shaft device; when the two frame bodies are in a completely folded state, the positioning parts of the side support pieces are matched with the locking parts in a stopping mode.

The application also provides electronic equipment, which comprises a flexible screen and a folding shell, wherein two side supporting pieces of a rotating shaft device of the folding shell are supported on the back surface of the flexible screen; the flexible screen is folded or unfolded along with the folding shell.

According to the rotating shaft device, the side supporting piece is rotationally connected with the connecting piece, the two opposite ends of the rotating piece are rotationally connected with the fixing seat and the connecting piece respectively, the rotating piece is slidingly and connectively connected with the side supporting piece, one end of the driven piece is rotationally connected with the fixing seat, and one end of the driven piece, which is far away from the fixing seat, is slidingly and rotationally connected with the connecting piece and the side supporting piece, so that the obtained side supporting piece is simultaneously restrained by the movement of the rotating piece and the driven piece, the folding or unfolding process of the rotating shaft device is stable, the folding or unfolding flexibility of the rotating shaft device is improved, the folding or unfolding of the rotating shaft device is facilitated, and the folding or unfolding process precision of the rotating shaft device is improved; secondly, the structure of the rotating shaft device is compact, so that the whole width of the rotating shaft device is smaller, the rotating shaft device is reduced to occupy the inner space of the folding shell, the layout of other elements such as a main board or a battery is facilitated, and the miniaturization development is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the 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 an exploded perspective view of the folding housing of FIG. 2;

FIG. 4 is a schematic perspective view of the folding housing of FIG. 3 from another perspective;

FIG. 5 is an enlarged view of a perspective structure of the spindle assembly of FIG. 3;

FIG. 6 is a schematic perspective view of the spindle assembly of FIG. 5 from another perspective;

FIG. 7 is an exploded perspective view of the spindle assembly of FIG. 5;

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

FIG. 9 is a partial perspective cross-sectional view of the support mechanism of FIG. 8 from another perspective;

FIG. 10 is a further exploded view of the perspective structure of the spindle assembly of FIG. 7;

FIG. 11 is a schematic perspective view of another view of the spindle assembly of FIG. 10;

FIG. 12 is an enlarged perspective view of a portion of the components of the spindle assembly of FIG. 10;

FIG. 13 is a schematic perspective view of a portion of the components of the spindle assembly of FIG. 11;

FIG. 14 is an exploded perspective view of one of the stop assemblies of the spindle assembly of FIG. 12;

FIG. 15 is a schematic perspective view of another view of the spacing assembly of FIG. 14;

FIGS. 16-24 are perspective cross-sectional views of different portions of the swivel arrangement of FIG. 5;

fig. 25 is a schematic perspective view of the electronic device in fig. 1 in a fully folded state;

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

FIG. 27 is a schematic perspective view of the spindle assembly of FIG. 25 from another perspective;

fig. 28-36 are perspective cross-sectional views of different portions of the folding housing of fig. 25.

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 in which the application may be practiced. Directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., in the present application are merely referring to the directions of the attached drawings, and thus, directional terms are used for better, more clear explanation 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 above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 and fig. 2 together, 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 flexible components with corresponding functions such as a flexible display screen, a flexible touch display screen, or flexible components fixedly attached with a flexible support plate, such as a flexible display screen attached with a flexible steel plate, a flexible touch screen, and the like. The flexible screen 30 is folded or unfolded with the folding housing 20. The folding housing 20 includes two frames 21 and a rotation shaft device 22 connected between the two frames 21, and the two frames 21 can be folded or unfolded along with the rotation 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 unfold with the spindle device 22.

Referring to fig. 1-4, the rotating shaft device 22 includes a supporting mechanism 23, a rotating assembly 25, a driven assembly 26 and a positioning mechanism 27, wherein the supporting mechanism 23 includes a side supporting member 233; the rotating assembly 25 comprises a fixed seat 251 and a rotating mechanism 253, the rotating mechanism 253 comprises a rotating piece 254 and a connecting piece 256, and two opposite ends of the rotating piece 254 are respectively and rotatably connected with the fixed seat 251 and the connecting piece 256; the driven component 26 comprises a driven member 261, one end of the driven member 261 is rotationally connected with the fixed seat 251, and the other end of the driven member 261 far away from the fixed seat 251 is respectively connected with the connecting member 256 and the side supporting member 233 in a sliding and rotating manner; the positioning mechanism 27 comprises a positioning member 271, the positioning member 271 is rotatably connected with the fixing seat 251, and the positioning member 271 is slidably connected with the connecting member 256. In the present embodiment, the supporting mechanism 23 includes two side supporting members 233, the two side supporting members 233 are disposed on opposite sides of the front surface of the fixing base 251, that is, the two side supporting members 233 are symmetrically disposed along the center of the fixing base 251; the rotating assembly 25 comprises two rotating mechanisms 253, wherein the two rotating mechanisms 253 are respectively connected to two opposite sides of the fixed seat 251 in a rotating way, and preferably, the two rotating mechanisms 253 are symmetrically arranged along the center of the fixed seat 251; the driven assembly 26 comprises two driven members 261, wherein the two driven members 261 are respectively and rotatably connected to two opposite sides of the fixed seat 251, and preferably, the two driven members 261 are symmetrically arranged along the center of the fixed seat 251; the positioning mechanism 27 comprises two positioning members 271, wherein the two positioning members 271 are respectively rotatably connected to two opposite sides of the fixed seat 251, and preferably, the two positioning members 271 are symmetrically arranged along the center of the fixed seat 251. The rotation member 254 is slidably and rotatably coupled to the side support 233, and in particular, a middle position of the rotation member 254 is slidably and rotatably coupled to the corresponding side support 233; and/or the positioning member 271 is slidably and rotatably connected to the corresponding side support member 233 at an end remote from the fixing base 251. In this embodiment, the rotating member 254 and the positioning member 271 on the same side of the fixing base 251 are slidably and rotatably connected to the same side supporting member 233. The connecting piece 256 is rotatably connected with the side supporting piece 233, the connecting piece 256 rotates relative to the fixed seat 251 to drive the rotating piece 254, the driven piece 261 and the positioning piece 271 to rotate relative to the fixed seat 251, and the rotating mechanism 253, the driven piece 261 and the positioning piece 271 rotate to drive the side supporting piece 233 to bend or unfold relative to the fixed seat 251. When the two side supporting pieces 233 are in the flattened state, the front surfaces of the two side supporting pieces 233 are coplanar with the front surface of the fixing base 251; the flexible screen 30 is attached to the front surfaces of the holder 251 and the side support 233. When the two side supporting pieces 233 are folded, the front surfaces of the two side supporting pieces 233 and the front surface of the fixing base 251 enclose a space with a water-drop-shaped or U-shaped cross section, and the bendable region 31 of the flexible screen 30 is bent to form a water-drop-shaped cross section.

When the two frames 21 of the electronic device 100 are respectively connected to the two connecting pieces 256 of the rotating shaft device 22 and the frames 21 rotate relative to the fixed seat 251, the rotating piece 254, the driven piece 261 and the positioning piece 271 are driven by the connecting pieces 256 to rotate relative to the fixed seat 251, meanwhile, the rotating piece 254, the driven piece 261 and the positioning piece 271 slide and rotate relative to the side supporting pieces 233 respectively, and the connecting pieces 256 rotate relative to the side supporting pieces 233, so that the side supporting pieces 233 can be folded or unfolded relative to the fixed seat 251, the flexible screen 30 can be folded or unfolded along with the supporting mechanism 23, and the bendable region 31 can be folded to form a U shape or a water drop shape or other shapes. Specifically, when the two frames 21 rotate relative to the fixed seat 251 to drive the two connecting pieces 256 to close to each other, the two rotating pieces 254 rotate relative to the fixed seat 251 and the corresponding connecting pieces 256 to close to each other, and at the same time, the rotating pieces 254 slide and rotate relative to the corresponding side supporting pieces 233; the two driven members 261 are rotated relative to the fixed base 251 to be close to each other, and at the same time, one end of the driven member 261 away from the fixed base 251 slides and rotates relative to the connecting member 256 and the side supporting members 233, so that the two side supporting members 233 are folded to each other to realize folding of the flexible screen 30; when the two frames 21 rotate relative to the fixed base 251 to drive the two connecting pieces 256 away from each other, the two rotating pieces 254 rotate relative to the fixed base 251 and the corresponding connecting pieces 256 to move away from each other, meanwhile, the rotating pieces 254 slide and rotate relative to the corresponding side supporting pieces 233, the two driven pieces 261 rotate relative to the fixed base 251 to move away from each other, and meanwhile, one end of the driven piece 261 away from the fixed base 251 slides and rotates relative to the connecting pieces 256 and the side supporting pieces 233 to move away from each other so as to enable the flexible screen 30 to be unfolded. In this embodiment, the bendable region 31 of the flexible screen 30 can be bent into a drop shape.

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 shaft device 22 of the electronic device 100 of the present invention comprises a supporting mechanism 23, a rotating assembly 25, a driven assembly 26 and a positioning mechanism 27, wherein two opposite ends of a rotating member 254 of the rotating assembly 25 are respectively and rotatably connected to a fixed seat 251 and a connecting member 256, and the rotating member 254 is slidably and rotatably connected to a side supporting member 233; one end of the follower 261 is rotatably connected to the fixed seat 251, the other end of the follower 261 is slidably and rotatably connected to the connecting member 256 and the side supporting member 233, one end of the positioning member 271 is rotatably connected to the fixed seat 251, the other end of the positioning member 271 is slidably connected to the connecting member 256, and the other end of the positioning member 271 is slidably and rotatably connected to the side supporting member 233. In the process of approaching or separating the two frames 21 from each other, the connecting piece 256 drives the rotating piece 254, the driven piece 261 and the positioning piece 271 to rotate relative to the fixed seat 251, and the connecting piece 256 rotates relative to the side supporting piece 233 to drive the two side supporting pieces 233 to fold or unfold with each other, so that folding or unfolding of the flexible screen 30 is achieved. Firstly, the side supporting piece 233 is rotationally connected with the connecting piece 256, and the side supporting piece 233 is slidingly and rotationally connected with the rotating piece 254, the driven piece 261 and the positioning piece 271, so that the side supporting piece 233 is simultaneously constrained by the movement of the rotating piece 254, the driven piece 261 and the positioning piece 271, the folding or unfolding process of the rotating shaft device 22 is stable, the folding or unfolding flexibility of the rotating shaft device 22 is improved, the folding or unfolding of the rotating shaft device 22 is facilitated, and the precision of the rotating shaft device 22 in the folding or unfolding process is improved; secondly, the structure of the rotating shaft device 22 is compact, so that 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, and the layout of other elements such as a main board or a battery and the like and the miniaturization development are facilitated; in addition, the rotating shaft device 22 has simple structure, lower manufacturing cost, high connection reliability among all parts and improved strength of the whole machine.

The rotating shaft device 22 in the present embodiment includes a rotating assembly 25, a pair of driven assemblies 26 and a pair of positioning mechanisms 27; the rotating assembly 25, the driven assembly 26 and the positioning mechanism 27 constitute a unitary structure that is disposed on the back of the support mechanism 23.

In some embodiments, the rotation shaft device 22 may also include two rotation assemblies 25, two pairs of driven assemblies 26 and two pairs of positioning mechanisms 27, wherein each rotation assembly 25 and one pair of driven assemblies 26 and one pair of positioning mechanisms 27 form a single integral structure, that is, the two rotation assemblies 25, the two pairs of driven assemblies 26 and the two pairs of positioning mechanisms 27 form two integral structures, and the two integral structures are respectively disposed at opposite ends of the back surface of the supporting mechanism 23.

In some embodiments, the rotating shaft device 22 may also include three or more rotating assemblies 25, three or more pairs of driven assemblies 26, and three or more pairs of positioning mechanisms 27, where each rotating assembly 25 and one pair of driven assemblies 26 and one pair of positioning mechanisms 27 form a unitary structure, that is, three or more rotating assemblies 25, three or more pairs of driven assemblies 26, and three or more pairs of positioning mechanisms 27 form three or more unitary structures, and the three or more unitary structures are respectively disposed on the back of the supporting mechanism 23 and are arranged at intervals along the length direction of the supporting mechanism 23.

As shown in fig. 1 to 4, the connecting pieces 256 on opposite sides of the rotating shaft device 22 are respectively and fixedly connected to the two frames 21, wherein when one frame 21 is folded or unfolded relative to the other frame 21, the corresponding rotating mechanism 253 can be driven to rotate relative to the fixed seat 251, the rotating mechanism 253 drives the driven piece 261 and the positioning piece 271 to rotate relative to the fixed seat 251, so as to drive the two side supporting pieces 233 to rotate and slide relative to the fixed seat 251 until the two side supporting pieces 233 are folded into a water drop shape or unfolded into a horizontal shape, and the bendable region 31 of the flexible screen 30 is folded into a water drop shape or unfolded into a horizontal shape along with the bendable region 31.

As shown in fig. 2-4, the frame 21 includes a front 211, a back 213, opposite sides 214 and two ends 215, the hinge device 22 is connected between two adjacent ends 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 end surface 215 of each frame 21 facing the rotating shaft device 22 is provided with a receiving groove 216, the receiving groove 216 penetrates through the front surface 211 of the frame 21, and two opposite ends of the receiving groove 216 extend to two opposite side surfaces 214 of the frame 21. Opposite sides of the rotating shaft device 22 are respectively accommodated in the accommodating grooves 216 of the two frames 21, and each connecting piece 256 is fixedly connected with the corresponding frame 21. The frame 21 is provided with an engaging portion 217 on a side thereof adjacent to the rotation shaft device 22, and when the two frames 21 are in a fully folded state, the side support 233 is positioned by the engaging portion 217. In the present embodiment, the engaging portion 217 is a groove provided on the surface of the housing groove 216 of the frame 21 facing the side support 233; preferably, the frame 21 has no plurality of clamping grooves, and the clamping grooves are arranged at intervals along the length direction of the side supporting piece 233; in this embodiment, three engaging portions 217 are provided on the frame 21, wherein two engaging portions 217 are located at opposite ends of the surface, and the other engaging portion 217 is located in the middle of the surface. 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.

Referring to fig. 5 to 8, the side supporting member 233 far from the fixing base 251 is connected to the connecting member 256 through a first arc slot and a first arc rail; the axis of the first circular arc groove is collinear with the axis of rotation between the side support 233 and the connecting piece 256, the first circular arc groove is provided on one of the side support 233 and the connecting piece 256, and the first circular arc rail is provided on the other of the connecting piece 256 and the side support 233. In this embodiment, the side support member 233 is provided with a first circular arc groove 2332, the connecting member 256 is provided with a first circular arc rail 2562, and the first circular arc rail 2562 is slidably inserted into the first circular arc groove 2332. Specifically, the side support member 233 includes a rectangular side support plate 2330, the side support plate 2330 includes a front surface facing the flexible screen 30 and a back surface facing away from the flexible screen 30, the back surface of the side support member 233 is provided with a first protrusion 2331, the first protrusion 2331 is provided with a first arc groove 2332, the connecting member 256 is provided with a first arc rail 2562 slidably inserted in the first arc groove 2332, and the connecting member 256 and the side support member 233 rotate relative to each other along an axis line of the first arc groove 2332. Further, a first bump 2331 is protruding at one end of the back surface of the side support plate 2330, and a first arc groove 2332 is formed on the side surface of the first bump 2331. One end of the first circular arc groove 2332 penetrates through the surface of the first bump 2331, which faces away from the fixing seat 251, and the opposite end of the first circular arc groove 2332 extends to the back surface of the side support plate 2330. The first circular arc groove 2332 is bent to a side away from the rear surface of the side support plate 2330, and specifically, the middle portion of the first circular arc groove 2332 is bent to a side away from the rear surface of the side support plate 2330. The side support member 233 is provided with a first protrusion 2331 at least at one end of the connecting member 256, a side surface of the first protrusion 2331 facing the connecting member 256 is provided with a first arc groove 2332, an end surface of the connecting member 256 facing the first protrusion 2331 is provided with a first arc rail 2562, and the first arc rail 2562 is slidably inserted into the first arc groove 2332.

In some embodiments, the opposite ends of the side supporting piece 233 corresponding to the connecting piece 256 are respectively provided with a first bump 2331, two sides facing the two first bumps 2331 are respectively provided with a first arc groove 2332, the axes of the two first arc grooves 2332 are collinear, and one end of the first arc groove 2332 penetrates through the surface of the first bump 2331 facing away from the fixing seat 251; the opposite end surfaces of the connecting piece 256 are respectively provided with a first arc rail 2562 in a protruding mode, and the two first arc rails 2562 are respectively slidably accommodated in the two first arc grooves 2332.

In some embodiments, the opposite ends of the side support 233 corresponding to the connecting piece 256 are respectively provided with a first bump 2331, two sides facing the two first bumps 2331 are respectively provided with a first arc rail 2562, and axes of the two first arc rails 2562 are collinear; the opposite two end surfaces of the connecting piece 256 are respectively provided with a first arc groove 2332, and the two first arc rails 2562 are respectively slidably accommodated in the two first arc grooves 2332.

In some embodiments, the connecting member 256 is provided with two or more first circular arc rails 2562, the axes of the two or more first circular arc rails 2562 are collinear, the side supporting member 233 is provided with two or more first circular arc grooves 2332 corresponding to the two or more first circular arc rails 2562, and the two or more first circular arc rails 2562 are rotatably accommodated in the two or more first circular arc grooves 2332, respectively.

The rotating member 254 and the side supporting member 233 are slidably and rotatably connected by the first limiting groove 2333 and the first limiting portion 2540, the first limiting groove 2333 is provided on one of the side supporting member 233 and the rotating member 254, and the first limiting portion 2540 is provided on the other of the rotating member 254 and the side supporting member 233. In this embodiment, the first limiting groove 2333 is disposed on one side of the first protrusion 2331 of the side support 233, which is close to the fixing seat 251, and the first limiting groove 2333 penetrates through two opposite sides of the first protrusion 2331. The first limiting groove 2333 is bent and extended to a side far away from the side supporting plate 2330, that is, a first end of the first limiting groove 2333 is close to the back surface of the side supporting plate 2330 and the fixing seat 251, a second end opposite to the first limiting groove 2333 is far away from the back surface of the side supporting plate 2330 and the fixing seat 251, and a middle part of the first limiting groove 2333 is bent and extended to a side far away from the side supporting plate 2330, that is, the first limiting groove 2333 is bent and extended from the first end to the second end.

Preferably, the first limiting groove 2333 includes a first limiting section 2333a and a second limiting section 2333b at opposite ends thereof, the first limiting section 2333a is closer to the fixing base 251 than the second limiting section 2333b, that is, the first limiting section 2333a is disposed at a first end of the first limiting groove 2333, and the second limiting section 2333b is disposed at a second end of the first limiting groove 2333. When the two side support pieces 233 are in the flattened state, the first limiting portion 2540 is positioned at the second limiting section 2333b (as shown in fig. 16) to prevent the side support pieces 233 from being folded back to damage the flexible screen 30; when the two side supports 233 are in the fully folded state, the first stopper 2540 is positioned at the first stopper section 2333a (as shown in fig. 28) to prevent the side supports 233 from being further folded to damage the flexible screen 30. In this embodiment, the first limiting portion 2540 is a first limiting shaft connected to the rotating member 254 and penetrating through the first limiting groove 2333, and the first limiting shaft can roll in the first limiting groove 2333 and can be limited to the first limiting section 2333a or the second limiting section 2333b; that is, when the first limiting shaft is defined in the first limiting section 2333a, the two side supporting members 233 maintain the completely folded state; when the first limiting shaft is defined in the second limiting section 2333b, the two side supports 233 are maintained in a flattened state. In some embodiments, the first limiting groove 2333 on the first protrusion 2331 may also extend obliquely to a side far away from the fixing seat 251, and the first limiting section 2333a and the second limiting section 2333b are respectively located at opposite ends of the first limiting groove 2333, and the first limiting section 2333a is far away from the fixing seat 251 than the second limiting section 2333 b.

In some embodiments, the first limiting portion 2540 on the rotating member 254 and the first limiting groove 2333 on the side supporting member 233 may be interchanged, specifically, the first limiting groove 2333 is provided on an end surface of the rotating member 254 facing the first protruding block 2331, the first limiting portion 2540 is provided on a side surface of the first protruding block 2331 facing the rotating member 254, and the first limiting portion 2540 is slidably and rotatably inserted into the first limiting groove 2333.

The side support 233 has a positioning portion 2334 at an end facing away from the fixing base 251, and the positioning portion 2334 is detachably connected to the engaging portion 217 of the frame 21. When the two frames 21 are in the fully folded state, the positioning portions 233 of the side supporting members 233 are in stop fit with the corresponding engaging portions 217 of the frames 21, so that the reliability of the whole electronic device 100 is improved. When the electronic device 100 falls, the elements of the rotating shaft device 22 will not relatively displace, and the frame 21 will not relatively displace relative to the rotating shaft device 22, so as to prevent the rotating shaft device 22 and the frame 21 from pressing the flexible screen 30, and protect the flexible screen 30. Specifically, the positioning portion 2334 is a positioning block disposed at one end of the first protrusion 2331 facing away from the fixing seat 251, and when the two frames 21 are in a fully folded state, the positioning block is clamped to the corresponding clamping portion 217, that is, the positioning block is clamped to the corresponding clamping groove.

In some embodiments, the positioning portion 2334 on the first protrusion 2331 and the engaging portion 217 on the frame 21 may be interchanged, specifically, the engaging portion 217 is provided at an end of the first protrusion 2331 away from the fixing seat 251, the positioning portion 2334 corresponding to the engaging portion 217 is provided on the frame 21, and the positioning portion 2334 is in stop fit with the engaging portion 217 when the two frames 21 are in the fully folded state.

As shown in fig. 7 and 8, the driven member 261 and the side supporting member 233 are slidably and rotatably connected by the cooperation of a second limiting groove and a second limiting portion, wherein the first limiting groove is provided on one of the driven member 261 and the side supporting member 233, and the second limiting portion is provided on the other of the driven member 261 and the side supporting member 233; in the present embodiment, the side supporting member 233 is provided with a second limiting groove 2335, the driven member 261 is provided with a second limiting portion 263 corresponding to the second limiting groove 2335, and the second limiting portion 263 is slidably and rotatably inserted into the second limiting groove 2335. Specifically, the back of the side support plate 2330 is provided with a second bump 2336 corresponding to the driven member 261, the second limiting groove 2335 is provided on the second bump 2336, the second limiting portion 263 is a second limiting shaft connected to one end of the driven member 261 away from the fixing seat 251 and inserted into the second limiting groove 2335, and the second limiting shaft is slidably and rotatably inserted into the second limiting groove 2335. The second limiting groove 2335 penetrates through two opposite side surfaces of the second protruding block 2336, the second limiting groove 2335 is bent towards one side far away from the side supporting plate 2330, namely two opposite ends of the second limiting groove 2335 are respectively close to the back surface of the side supporting plate 2330, and the middle part of the second limiting groove 2335 is bent towards one side far away from the side supporting plate 2330. Preferably, the second bump 2336 is an arc-shaped block, the second limiting groove 2335 extends along the arc-shaped block, and two opposite ends of the second limiting groove 2335 extend to two opposite ends close to the arc-shaped block respectively; the end face of the second bump 2336 facing the fixed seat 251 and the end face facing away from the fixed seat 251 are all arc surfaces. Specifically, the second limiting groove 2335 includes a first limiting section 2335a and a second limiting section 2335b at opposite ends thereof, and a communicating section 2335c communicating the first limiting section 2335a and the second limiting section 2335b, wherein the first limiting section 2333a is closer to the fixing base 251 than the second limiting section 2333 b. When the two side supporting pieces 233 are in the flattened state, the second limiting portion 263 (i.e. the second limiting shaft) is positioned at the second limiting section 2335b (as shown in fig. 23), so as to prevent the side supporting pieces 233 from being folded back to damage the flexible screen 30; when the two side supports 233 are in the fully folded state, the second limiting portion 263 (i.e., the second limiting shaft) is positioned at the first limiting section 2335a (as shown in fig. 35) to prevent the side supports 233 from being further folded to damage the flexible screen 30. In this embodiment, the second limiting shaft can roll in the second limiting groove 2335 and can be limited to the first limiting section 2335a or the second limiting section 2335b; that is, when the second limiting shaft is defined in the first limiting section 2335a, the two side supporting members 233 are maintained in a completely folded state; when the second limiting shaft is defined in the second limiting section 2335b, the two side supports 233 are maintained in a flattened state.

In some embodiments, the second limiting groove 2335 may be disposed on a side of the driven member 261 facing the second protrusion 2336, the second limiting portion 263 is disposed on a side of the second protrusion 2336 facing the driven member 261, and the second limiting portion 263 is slidably and rotatably disposed in the second limiting groove 2335.

The second bump 2336 has a positioning portion 2334 at an end facing away from the fixing base 251, and the positioning portion 2334 is detachably connected to the engaging portion 217 of the frame 21. When the two frames 21 are completely folded, the positioning portion 233 on the second protrusion 2336 is in stop fit with the corresponding engaging portion 217 on the frame 21, so as to improve the reliability of the whole electronic device 100. Specifically, the positioning portion 2334 is a positioning block disposed at one end of the second protrusion 2336 facing away from the fixing seat 251, and when the two frames 21 are in a fully folded state, the positioning block is clamped to the corresponding clamping portion 217, that is, the positioning block is clamped to the corresponding clamping groove.

In some embodiments, the positioning portion 2334 on the second protrusion 2336 and the engaging portion 217 on the frame 21 may be interchanged, specifically, the engaging portion 217 is provided at an end of the second protrusion 2336 away from the fixing seat 251, the positioning portion 2334 corresponding to the engaging portion 217 is provided on the frame 21, and the positioning portion 2334 is in stop fit with the engaging portion 217 when the two frames 21 are in the fully folded state.

The driven piece 261 is slidably and rotationally connected with the connecting piece 256 through the matching of the third limiting groove and the third limiting part; the third limit groove is provided on one of the follower 261 and the connecting member 256, and the third limit portion is provided on the other of the follower 261 and the connecting member 256. In this embodiment, the connecting member 256 is provided with a third limiting groove 2561, the driven member 261 is provided with a third limiting portion 265 corresponding to the third limiting groove 2561, and the third limiting portion 265 is slidably and rotatably inserted into the third limiting groove 2561. Specifically, the third limiting portion 265 is a third limiting shaft connected to an end of the driven member 261 away from the fixed seat 251 and inserted into the third limiting groove 2561, and the third limiting shaft is slidably and rotatably inserted into the third limiting groove 2561. The third limiting groove 2561 is bent to a side far away from the side supporting plate 2330, specifically, the third limiting groove 2561 includes a first limiting section 2561a and a second limiting section 2561b at opposite ends thereof, and the first limiting section 2561a is closer to the fixing seat 251 than the second limiting section 2561 b. When the two side supporting pieces 233 are in the flattened state, the third limiting portion 265 (i.e., the third limiting shaft) is positioned at the second limiting section 2561b (as shown in fig. 24), so as to prevent the side supporting pieces 233 from being folded back to damage the flexible screen 30; when the two side supports 233 are in the fully folded state, the third limiting portion 265 (i.e., the third limiting shaft) is positioned at the first limiting section 2561a (as shown in fig. 36) to prevent the side supports 233 from being further folded to damage the flexible screen 30. In this embodiment, the third limiting shaft can roll in the third limiting groove 2561 and can be limited to the first limiting section 2561a or the second limiting section 2561b; that is, when the third limiting shaft is defined in the first limiting section 2561a, the two side supporting pieces 233 maintain the completely folded state; when the third limiting shaft is defined in the second limiting section 2561b, the two side supports 233 are maintained in a flattened state. In this embodiment, the second limiting groove 2335 and the third limiting groove 2561 are both bent to a side far away from the side supporting plate 2330, and the bending degree of the second limiting groove 2335 is greater than that of the third limiting groove 2561.

As shown in fig. 7 to 9, the positioning member 271 and the side supporting member 233 are slidably and rotatably connected by the engagement of a fourth limit groove provided in one of the positioning member 271 and the side supporting member 233 and a fourth limit portion provided in the other of the positioning member 271 and the side supporting member 233. In this embodiment, the side support member 233 is provided with a fourth limiting groove 2337 corresponding to the positioning member 271, and the positioning member 271 is provided with a fourth limiting portion 272 slidably and rotatably inserted in the fourth limiting groove 2337. Specifically, a third bump 2338 is disposed on the back of the side support plate 2330 near the positioning element 271, a fourth limiting groove 2337 is disposed on the side of the third bump 2338, the fourth limiting portion 272 is a fourth limiting shaft connected to an end of the positioning element 271 far from the fixing seat 251 and inserted into the fourth limiting groove 2337, and the fourth limiting shaft is slidably and rotatably inserted into the fourth limiting groove 2337. The fourth limiting groove 2337 is bent and extended to one side far away from the side supporting plate 2330, that is, one end of the fourth limiting groove 2335, which is close to the fixing seat 251, is close to the side supporting plate 2330 and the fixing seat 251, the other end, which is far away from the fixing seat 251, is far away from the side supporting plate 2330, and the middle part of the fourth limiting groove 2335 is bent to one side far away from the side supporting plate 2330. Preferably, the fourth bump 2338 is an arc-shaped block, the fourth limiting groove 2337 extends along the arc-shaped block, and two opposite ends of the fourth limiting groove 2337 extend to two opposite ends close to the arc-shaped block respectively; the end face of the third bump 2338 facing the fixed seat 251 and the end face facing away from the fixed seat 251 are all arc surfaces. Further, the fourth limiting groove 2337 includes a first limiting section 2337a and a second limiting section 2337b at opposite ends thereof, and a communicating section 2337c communicating the first limiting section 2337a and the second limiting section 2337b, wherein the first limiting section 2337a is closer to the fixing base 251 than the second limiting section 2337 b. When the two side supporting pieces 233 are in the flattened state, the fourth limiting portion 272 (i.e., the fourth limiting shaft) is positioned at the second limiting section 2337b (as shown in fig. 20), so as to prevent the side supporting pieces 233 from being folded back to damage the flexible screen 30; when the two side supports 233 are in the fully folded state, the fourth limiting portion 272 (i.e., the fourth limiting shaft) is positioned at the first limiting section 2337a (as shown in fig. 32) to prevent the side supports 233 from being further folded to damage the flexible screen 30. In this embodiment, the second limiting shaft can roll in the second limiting groove 2335 and can be limited to the first limiting section 2337a or the second limiting section 2337b; that is, when the fourth limiting shaft is defined in the first limiting section 2337a, the two side supporting members 233 are maintained in a completely folded state; when the fourth limiting shaft is defined in the second limiting section 2337b, the two side supports 233 are maintained in a flattened state.

The end of the third bump 2338 away from the fixed seat 251 is provided with a positioning portion 2334, and the positioning portion 2334 is detachably connected to the engaging portion 217 of the frame 21. When the two frames 21 are completely folded, the positioning portion 2334 on the third protrusion 2338 is in stop fit with the corresponding engaging portion 217 of the frame 21, so as to improve the reliability of the whole electronic device 100. Specifically, the positioning portion 2334 is a positioning block disposed at one end of the third protrusion 2338 facing away from the fixing seat 251, and when the two frames 21 are in a fully folded state, the positioning block is clamped to the corresponding clamping portion 217, that is, the positioning block is clamped to the corresponding clamping groove.

In some embodiments, the positioning portion 2334 on the third protrusion 2338 and the engaging portion 217 on the frame 21 may be interchanged, specifically, the engaging portion 217 is provided at an end of the third protrusion 2338 away from the fixing seat 251, the positioning portion 2334 corresponding to the engaging portion 217 is provided on the frame 21, and the positioning portion 2334 is in stop fit with the engaging portion 217 when the two frames 21 are in the fully folded state.

One end of the fourth limiting groove 2337 of the third bump 2338, which is close to the fixed seat 251, is provided with a propping portion 2338a, and the propping portion 2338a is used for propping against one end of the fourth limiting portion 272. Preferably, the end of the abutting portion 2338a away from the fixing seat 251 is provided with a sliding guiding surface 2338b, and the sliding guiding surface 2338b facilitates the end of the fourth limiting portion 272 to slide along the sliding guiding surface 2338b to abut against the abutting portion 2338a, or facilitates the end of the fourth limiting portion 272 to slide along the sliding guiding surface 2338b to separate from abutting against the abutting portion 2338 a.

As shown in fig. 7 to 9, a blocking portion 2339 is provided on the back surface of the side support plate 2330 near the third protrusion 2338, when the two frames 21 are completely folded, the two side support members 233 are completely folded, and the end surface of the positioning member 271 far from the fixing base 251 is in stop fit with the stop portion 2339, so as to prevent the side support plate 2330 from moving relative to the fixing base 251, so as to improve the reliability of the whole electronic device 100. Specifically, the blocking portion 2339 is a stop block protruding from the back surface of the side support plate 2330 and close to the third bump 2338, where the stop block includes a stop surface 2339a facing away from the fixing seat 251 and a guiding surface 2339b facing toward the fixing seat 251, the stop surface 2339a is used for stopping the end surface of the positioning member 271 away from the fixing seat 251, and the guiding surface 2339b is convenient for the positioning member 271 to move relative to the stop portion 2339; preferably, the stop surface 2339a is substantially perpendicular to the back surface of the side support plate 2330.

The side support plate 2330 is provided with a first avoidance groove 2330a and a second avoidance groove 2330b on one side close to the fixing seat 251, wherein the first avoidance groove 2330a is close to the first bump 2331, and the second avoidance groove 2330b is close to the third bump 2338. The first avoidance groove 2330a is used for avoiding the rotation member 254, and the second avoidance groove 2330b is used for avoiding the pushing member. The stop portion 2339 is close to one side of the second avoidance groove 2330b away from the fixed seat 251.

Referring to fig. 10-13, the rotating member 254 is cooperatively connected with the fixed seat 251 through a second arc slot 2511 and a second arc rail 2541, and the axis of the second arc slot 2511 is collinear with the axis of rotation between the rotating member 254 and the fixed seat 251; the second arc groove 2511 is provided at one of the fixed base 251 and the rotating member 254, and the second arc rail 2541 is provided at the other of the rotating member 254 and the fixed base 251. In this embodiment, two opposite sides of one end of the fixed seat 251 are respectively provided with a second arc groove 2511, one end of each rotating member 254 far away from the connecting member 256 is provided with a second arc rail 2541 corresponding to the second arc groove 2511, so that the rotating member 254 and the fixed seat 251 rotate relatively along the second arc groove 2511, the axis of the second arc groove 2511 is collinear with the axis of the second arc rail 2541, and the axis of the second arc rail 2541 is collinear with the axis of rotation between the rotating member 254 and the fixed seat 251.

In some embodiments, the second circular arc groove 2511 on the holder 251 and the second circular arc rail 2541 on the rotator 254 may be interchanged; such as: an arc groove may be formed on the second arc rail 2541, an arc rail corresponding to the arc groove is formed on the fixing base 251, the arc rail is rotatably inserted into the arc groove, and an axis of the arc groove, an axis of the arc rail, and an axis of rotation between the rotating member 254 and the fixing base 251 are collinear.

In this embodiment, the fixing base 251 is a rectangular block, the fixing base 251 includes a rectangular front surface 2510 and a back surface facing away from the front surface 2510, and two opposite sides of one end of the front surface 2510 of the fixing base 251 are respectively provided with a second arc groove 2511; two opposite sides of one end of the front surface 2510 far away from the second arc groove 2511 are respectively provided with a first switching groove 2513, and two driven pieces 261 are respectively connected with the two first switching grooves 2513 in a rotating way; two opposite sides of the front surface 2510, which are close to the second arc groove 2511, are respectively provided with a second switching groove 2515, and two positioning pieces 271 are respectively and rotatably connected to the two second switching grooves 2515. The rotation axis between the rotation member 254 and the fixed seat 251 is parallel to the rotation axis between the driven member 261 and the fixed seat 251, and the rotation axis between the driven member 261 and the fixed seat 251 is parallel to the rotation axis between the positioning member 271 and the fixed seat 251.

One end of the rotating member 254 away from the fixed seat 251 is rotatably connected to the connecting member 256, and the rotating member 254 is slidably and rotatably connected to the side supporting member 233. Specifically, the rotating member 254 and the connecting member 256 are connected by the coupling shaft 2501 and the coupling hole 2503, the coupling shaft 2501 is provided to one of the rotating member 254 and the connecting member 256, and the coupling hole 2503 is provided to the other of the rotating member 254 and the connecting member 256. In this embodiment, the rotating member 254 includes a second circular arc rail 2541, a connecting portion 2542, and a supporting portion 2543 connected between the second circular arc rail 2541 and the connecting portion 2542, wherein the second circular arc rail 2541 is rotatably connected to the fixing base 251, the connecting portion 2542 is rotatably connected to the connecting member 256, and the supporting portion 2542 is slidably and rotatably connected to the side supporting member 233. Specifically, the second circular arc rail 2541 is a circular arc block slidably inserted into the second circular arc groove 2511 of the first seat 2510. The first limiting portion 2540 is connected to one side of the supporting portion 2542, that is, one end of the first limiting shaft is connected to the supporting portion 2542, and the other end of the first limiting shaft is slidably and rotatably inserted into the first limiting groove 2333 of the side supporting member 233. Further, an end of the connecting portion 2542 away from the second circular arc rail 2541 is provided with a shaft hole along a direction parallel to the axis of the second circular arc rail 2541, the connecting shaft 2501 is inserted into the shaft hole, and the axis of the connecting shaft 2501 is parallel to the axis of the second circular arc rail 2541. A connecting hole is formed in one side surface of the supporting portion 2542, and one end of the first limiting portion 2540 is connected to the connecting hole; specifically, a connecting tube is protruding on a side surface of the supporting portion 2542, and one end of the first limiting portion 2540 is inserted into an inner cavity of the connecting tube. Preferably, the side of the connecting portion 2542 facing away from the second circular arc rail 2541 forms a circular arc surface, which facilitates the rotation of the rotating member 254 relative to the connecting member 256.

In some embodiments, the first limiting portion 2540 may also be integrally formed with the rotating member 254.

In some embodiments, the connection shaft 2501 may also be provided on the connection member 256, and the connection portion 2542 is provided with a shaft hole corresponding to the connection shaft 2501, and the connection shaft 2501 is rotatably connected to the shaft hole of the connection portion 2542. The connection shaft 2501 may be integrally formed with the connection 256.

As shown in fig. 11-13, the connecting member 256 is in a strip shape, the connecting member 256 includes a strip-shaped connecting plate 2560, and the connecting plate 2560 includes a front surface 2560a facing the side support member 233, a rear surface facing away from the front surface 2560a, opposite side surfaces, and opposite end surfaces. The front surface 2560a is an inclined surface, and specifically, the thickness of the connecting plate 2560 on the side close to the fixing seat 251 is smaller than the thickness of the connecting plate on the side far from the fixing seat 251. At least one end surface of the connecting plate 2560 is provided with a first circular arc rail 2562. The front surface of the connecting plate 2560 is provided with a first accommodating groove 2563, a second accommodating groove 2564 and a third accommodating groove 2565; the first receiving groove 2563 and the second receiving groove 2564 are located at opposite ends of the connecting plate 2560, the third receiving groove 2565 is located between the first receiving groove 2563 and the second receiving groove 2564, and the first receiving groove 2563, the second receiving groove 2564 and the third receiving groove 2565 penetrate through opposite sides of the connecting plate 2560. The first accommodating groove 2563 is used for accommodating the connecting portion 2542 of the rotating member 254, the second accommodating groove 2564 is used for accommodating one end of the driven member 261 away from the fixed seat 251, and the third accommodating groove 2565 is used for accommodating one end of the positioning member 271 away from the fixed seat 251. In this embodiment, the first receiving groove 2563 is close to one end of the first circular arc rail 2562, the connecting hole 2503 is disposed at one end of the connecting plate 2560 close to the first circular arc rail 2562, the connecting hole 2503 is disposed at one side away from the fixing seat 251, and the connecting hole 2503 is communicated with the first receiving groove 2563. The connecting plate 2560 is provided with a third limiting groove 2561 at two opposite side surfaces of the second accommodating groove 2564, which are close to the front surface 2560 a.

The positioning piece 271 and the connecting piece 256 are connected with each other through the matching of a guide sliding groove and a guide sliding rail, the guide sliding groove extends along the direction perpendicular to the rotation axis between the positioning piece 271 and the fixed seat 251, the guide sliding groove is arranged on one of the positioning piece 271 and the connecting piece 256, and the guide sliding rail is arranged on the other one of the positioning piece 271 and the connecting piece 256. In this embodiment, the connecting member 256 is provided with a guiding chute 2566, and the positioning member 271 is provided with a guiding rail 2710 slidably inserted into the guiding chute 2566; specifically, the connecting plate 2560 is provided with a pair of guide sliding grooves 2566 on two opposite sides of the third accommodating groove 2565, and the guide sliding grooves 2566 are communicated with the third accommodating groove 2565. The connecting piece 256 is provided with a stop portion 2567 at a position, which corresponds to the positioning piece 271 and is close to the fixing seat 251, and the connecting plate 2560 is provided with the stop portion 2567 on one side surface of the third accommodating groove 2565, specifically, the stop portion 2567 is a stop groove, and the stop groove is communicated with the third accommodating groove 2565 and the guide chute 2566. When the side support 233 is in a fully folded state relative to the fixing base 251, the first end of the fourth limiting shaft abuts against the top 2338a, so that the second end of the fourth limiting shaft is in stop fit with the stop portion 2567.

In some embodiments, the guide chute 2566 on the connecting member 256 and the guide chute 2710 on the positioning member 271 can be interchanged, specifically, the opposite sides of the third receiving groove 2565 of the connecting member 256 are provided with the guide chute 2710, the guide chute 2710 extends along the direction perpendicular to the axis of rotation between the positioning member 271 and the fixing seat 251, the opposite sides of the end of the positioning member 271 away from the fixing seat 251 are respectively provided with the guide chute 2566, and the guide chute 2710 is slidably inserted into the corresponding guide chute 2566.

The follower 261 includes a rotation portion 2611, a connection portion 2613, and a support portion 2614 connected between the rotation portion 2611 and the connection portion 2613, the rotation portion 2611 and the connection portion 2613 being located at opposite ends of the follower 261. The rotation portion 2611 is configured to be rotatably connected to the fixed seat 251, specifically, the rotation portion 2611 is rotatably connected to the first switching slot 2513 of the fixed seat 251, and the rotation portion 2611 and the first switching slot 2513 may be connected by, but not limited to, a rotation shaft, a mating connection between a circular arc rail and a circular arc slot, or the like. A position avoiding groove 2615 is arranged at one end of the follower 261 away from the rotating part 2611, and the position avoiding groove 2615 is used for accommodating the second bump 2336; specifically, the clearance groove 2615 is provided on the outer peripheral surface of the connecting portion 2613 and extends to the supporting portion 2614. The second limiting portion 263 and the third limiting portion 265 are connected to the connecting portion 2613, specifically, the second limiting portion 263 is disposed in the middle of the connecting portion 2613 corresponding to the avoidance slot 2615, that is, opposite ends of the second limiting shaft are connected to opposite side surfaces of the connecting portion 2613 opposite to the avoidance slot 2615; the two third limiting portions 265 are respectively connected to two opposite end surfaces of the connecting portion 2613. Preferably, the second limiting shaft and the third limiting shaft are coaxial, further, the connecting portion 2613 is a circular cylinder, different portions of the same limiting shaft of the second limiting portion 2663 and the third limiting portion 265, that is, after the limiting shaft penetrates through the inner cavity of the circular cylinder, a portion of the limiting shaft corresponding to the avoidance groove 2615 is a second limiting portion 263, and portions of two opposite ends of the limiting shaft extending out of two opposite end faces of the connecting portion 2613 are third limiting portions 265.

The positioning member 271 includes a rotating portion 2711, a connecting portion 2713, and a supporting portion 2714 connected between the rotating portion 2711 and the connecting portion 2713, the rotating portion 2711 and the connecting portion 2713 being located at opposite ends of the supporting portion 2714. The rotating portion 2711 is configured to be rotatably connected to the fixing base 251, specifically, the rotating portion 2711 is rotatably connected to the second adapting groove 2515 of the fixing base 251, and the rotating portion 2711 and the second adapting groove 2515 may be connected by, but not limited to, a rotation shaft, a mating connection between a circular arc rail and a circular arc groove, or the like. The connecting portion 2713 is slidably connected to the guide chute 2566 of the connecting member 256, specifically, two opposite sides of the connecting portion 2713 are respectively provided with a guide rail 2710, and the guide rails 2710 are slidably inserted into the guide chute 2566. In this embodiment, the connecting portion 2713 is a rectangular connecting plate, and two opposite sides of the connecting plate are provided with guide rails 2710. The end of the positioning piece 271 far away from the fixed seat 251 is provided with a avoidance groove 2715, and the avoidance groove 2715 is used for accommodating a third bump 2338 of the side supporting piece 233; in this embodiment, the avoidance groove 2715 is disposed on one side of the front face of the connection board. One end of the fourth limiting portion 272 is slidably connected to a side of the connecting portion 2713 away from the rotating portion 2711, and one end of the fourth limiting portion 272 extends to the avoidance groove 2715.

As shown in fig. 14 and 15, a mounting portion is provided on a side of the positioning member 271 away from the rotating portion 2711, the mounting portion is used for connecting the fourth limiting portion 272, specifically, the mounting portion includes a mounting block 2716 protruding from a front surface of the connecting portion 2713, a sliding guide hole 2717 is provided between the connecting portion 2713 and the mounting block 2716, the sliding guide hole 2717 extends along a direction parallel to a rotational axis of the rotating portion 2711 and penetrates through two opposite end surfaces of the mounting block 2716, one end of the sliding guide hole 2717 is communicated with the avoidance groove 2715, the fourth limiting portion 272 is slidably disposed in the sliding guide hole 2717, and a first end of the fourth limiting portion 272 extends into the avoidance groove 2715. Mounting block 2716 is provided with mounting slot 2718, and mounting slot 2718 communicates with slide guide hole 2717. The positioning mechanism further comprises an elastic piece and a clamping piece 276, wherein the elastic piece has a pre-elastic force, and the pre-elastic force is used for driving the second end of the fourth limiting shaft to be separated from the stop part 2567; the blocking member 276 is used for positioning the elastic member on the fourth limiting shaft. In this embodiment, the elastic member is a spring sleeved on the fourth limiting portion 272. The outer peripheral surface of the second end of the fourth limiting portion 272 is provided with a clamping interface 2721, and the first end of the fourth limiting portion 272 extends to the avoidance groove 2715. The clamping piece 276 is a U-shaped buckle, and the clamping piece 276 is clamped to the clamping port 2721 of the fourth limiting portion 272. The positioning piece 271 further comprises a positioning portion 2719, and the positioning portion 2719 is arranged on one side of the positioning piece 271 away from the fixing seat 251; in this embodiment, the positioning portion 2719 is a positioning surface provided on the connecting portion 2713 facing away from the rotating portion 2711.

When the positioning mechanism 27 is assembled, the elastic piece 274 is placed in the mounting groove 2718, so that the inner cavity of the elastic piece 274 is opposite to the slide guiding hole 2717, and the fourth limiting portion 272 (namely, the fourth limiting shaft) is inserted into the slide guiding hole 2717 and the inner cavity of the elastic piece 274 until the first end of the fourth limiting portion 272 extends into the avoidance groove 2715; the clamping piece 276 is inserted into the mounting groove 2718 and is buckled with the clamping interface 2721 of the second limiting part 272, so that the elastic piece 274 is compressed and extruded between the clamping piece 276 and the mounting block 2716, and the elastic piece 274 drives one side of the fourth limiting axial position avoidance groove 2715 to move.

As shown in fig. 10 and 11, the rotating shaft device 22 further includes a back cover 28, and the back surface of the fixing seat 251 is connected to the back cover 28. Specifically, the back cover 28 is a bar frame, the back cover 28 has a receiving groove 280, and the back surface of the fixing seat 251 is received in the receiving groove 280 and fixedly connected to the back cover 28. Preferably, the back cover 28 is provided with a mounting portion (not shown) on an inner surface of the receiving groove 280, and the fixing base 251 is connected to the first mounting portion. The connection between the fixing base 251 and the mounting portion may be, but not limited to, a screw connection, a clamping connection, or an adhesive connection.

Referring to fig. 5-13 and fig. 16-24, when the rotating shaft device 22 is assembled, the connecting portions 2542 of the two rotating members 254 are respectively received in the first receiving grooves 2563 of the two connecting members 256 away from the ends of the second circular arc rail 2541, so that the two connecting shafts 2501 are respectively inserted into the shaft holes of the two connecting portions 2542 and the corresponding connecting holes 2503, and the two first connecting members 254 are respectively rotatably connected to the two connecting members 256; the second arc rails 2541 of the two rotating members 254 are respectively accommodated in the two second arc grooves 2511 of the first seat body 2510, so that the rotating members 254 are rotationally connected to the fixed seat 251; the rotating parts 2611 of the two followers 261 are respectively and rotatably connected to the two first rotating grooves 2513 of the fixed seat 251, and the two connecting parts 2613 are respectively accommodated in the second accommodating grooves 2564 of the two connecting pieces 256; the rotating parts 2711 of the two positioning pieces 271 are respectively and rotatably connected to the two second switching grooves 2515 of the fixing base 251, the two connecting parts 2713 are respectively accommodated in the third accommodating grooves 2565 of the two connecting pieces 256, and the guide sliding rails 2710 of the positioning pieces 271 are slidably inserted into the corresponding guide sliding grooves 2566. The two side supporting pieces 233 are placed on two opposite sides of the front surface of the fixed seat 251, the rotating piece 254, the driven piece 261 and the positioning piece 271 are positioned on the back surface of the side supporting plate 2330, the first circular arc rails 2562 of the two connecting pieces 256 are respectively slidably accommodated in the corresponding first circular arc grooves 2332, and the first limiting parts 2540 of the two rotating pieces 254 are respectively inserted into the first limiting grooves 2333 of the two side supporting pieces 233; the two second protruding blocks 2336 are respectively accommodated in the avoidance grooves 2615 of the two driven pieces 261, the second limiting parts 263 penetrate through the second limiting grooves 2335 of the second protruding blocks 2336, the second limiting parts 263 are connected to the connecting parts 2613, one ends of the third limiting parts 265 are inserted into the corresponding third limiting grooves 2561, and the other ends of the third limiting parts 265 are connected to the connecting parts 2613; the two third protruding blocks 2338 are respectively accommodated in the avoidance grooves 2715 of the two positioning pieces 271, and the first end of the fourth limiting portion 272 is slidably inserted into the second limiting groove 2335. The fixing bases 251 are disposed in the back cover 28, and the fixing bases 251 are respectively connected to the back cover 28.

When the two side supporting members 233 are in the flattened state, the front surfaces of the two side supporting members 233 are coplanar with the front surface of the fixing seat 251, the first circular arc rail 2562 is rotatably accommodated in the corresponding first circular arc groove 2332, the first limiting portion 2540 is positioned at the second limiting section 2333b of the first limiting groove 2333, the second limiting portion 263 is positioned at the second limiting section 2335b of the second limiting groove 2335, the third limiting portion 265 is positioned at the second limiting section 2561b of the third limiting groove 2561, and the fourth limiting portion 272 is positioned at the second limiting section 2337b of the fourth limiting groove 2337. When the two side supporting members 233 are in the fully folded state, the front surfaces of the two side supporting members 233 and the front surface of the fixing seat 251 enclose a droplet-shaped space, the first circular arc rail 2562 is rotatably accommodated in the corresponding first circular arc groove 2332, the first limiting portion 2540 is positioned at the first limiting section 2333a of the first limiting groove 2333, the second limiting portion 263 is positioned at the first limiting section 2335a of the second limiting groove 2335, the third limiting portion 265 is positioned at the first limiting section 2561a of the third limiting groove 2561, and the fourth limiting portion 272 is positioned at the first limiting section 2337a of the fourth limiting groove 2337.

When the connecting member 256 drives the rotating member 254, the driven member 261 and the positioning member 271 to rotate relative to the fixed seat 251, the rotating mechanism 253, the driven member 261 and the positioning member 271 rotate to drive the side supporting members 233 to rotate and slide relative to the fixed seat 251, so that the two side supporting members 233 are bent or unfolded. Specifically, the rotating member 254 rotates relative to the fixed seat 251 through the second circular arc rail 2541 and the second circular arc groove 2511; the rotating portion 2611 of the driven member 261 rotates relative to the fixed seat 251, and at the same time, the second limiting portion 263 on the connecting portion 2613 of the driven member 254 slides and rotates in the second limiting groove 2335, and the third limiting portion 265 on the connecting portion 2613 slides and rotates in the third limiting groove 2561; the rotating portion 2711 of the positioning piece 261 rotates relative to the fixed seat 251, the guide slide rail 2710 of the positioning piece 261 slides in the corresponding guide slide groove 2566, and the first end of the fourth limiting portion 272 slides in the fourth limiting groove 2337 and rotates to drive the two side supporting pieces 233 to move relative to the fixed seat 251, so that the two side supporting pieces 233 are mutually bent or mutually unfolded.

As shown in fig. 16-36, when the rotating shaft device 22 is bent from the flattened state, one of the connecting pieces 256 is bent towards the other connecting piece 256 relative to the fixed seat 251, wherein the one connecting piece 256 drives the second circular arc rail 2541 of the rotating piece 254 to rotate in the second circular arc groove 2511 of the fixed seat 251 and to be close to the other connecting piece, the first limiting portion 2540 on the rotating piece 254 slides in the first limiting groove 2333 and rotates, specifically, the first limiting portion 2540 moves from the second limiting section 2333b of the first limiting groove 2333 to the first limiting section 2333a, and the first circular arc rail 2562 rotates in the corresponding first circular arc groove 2332; meanwhile, the one connecting piece 256 drives the rotating portion 2611 of the corresponding driven piece 261 to rotate relative to the fixed seat 251 so that the two driven pieces 261 are close to each other, and drives the second limiting portion 263 and the third limiting portion 265 on the driven piece 261 to synchronously slide and rotate in the second limiting groove 2335 and the third limiting groove 2561 respectively, specifically, the second limiting portion 263 moves from the second limiting section 2335b of the second limiting groove 2335 to the first limiting groove 2335a, and the third limiting portion 265 moves from the second limiting section 2561b of the third limiting groove 2561 to the first limiting groove 2561a; the rotating part 2711 on the positioning part 271 is driven by one of the connecting parts 256 to rotate relative to the fixing seat 251 to enable the two positioning parts 271 to approach each other, and the guiding rail 2710 is driven to be slidably inserted into the guiding chute 2566, the first end of the fourth limiting part 272 slides in the fourth limiting groove 2337 and rotates, specifically, the first end of the fourth limiting part 272 moves from the second limiting section 2337b of the fourth limiting groove 2337 to the first limiting section 2337a, so as to drive the two side supporting parts 233 to approach each other until the two side supporting parts 233 and the fixing seat 251 enclose a cross section into a water drop shape.

In the bending process of the side supporting piece 233 relative to the fixing seat 251, the first limiting portion 2540 moves from the first limiting section 2333a to the second limiting section 2333b of the first limiting groove 2333, the second limiting portion 263 moves from the second limiting section 2335b to the first limiting groove 2335a of the second limiting groove 2335, the third limiting portion 265 moves from the second limiting section 2561b to the first limiting groove 2561a of the third limiting groove 2561, and the first end of the fourth limiting portion 272 moves from the second limiting section 2337b to the first limiting section 2337a of the fourth limiting groove 2337, the first end of the fourth limiting portion 272 slidably abuts against the guide sliding surface 2338b to drive the second end of the fourth limiting portion 272 to move towards the stop portion 2567, and the elastic piece is extruded to be elastically deformed until the second end of the fourth limiting portion 272 is clamped to the stop portion 2567 of the connecting piece 256, that is, and the second end of the fourth limiting portion 272 is matched with the stop portion 2567 in position; at this time, the positioning portion 2719 of the positioning member 271 is in stop fit with the catch portion 2339 of the corresponding side support 233, so that the rotating shaft device 22 is kept in a stable fully folded state; in addition, the side supporting piece 233 is simultaneously constrained by the first limiting portion 2540 and the first limiting groove 2333, the second limiting portion 263 and the second limiting groove 2335, the third limiting portion 265 and the third limiting groove 2561, and the fourth limiting portion 272 and the fourth limiting groove 2337 in the folding process, so that the folding process of the rotating shaft device 22 is stable, the folding flexibility of the rotating shaft device 22 is improved, the folding of the rotating shaft device 22 is facilitated, and the precision of the rotating shaft device 22 in the folding process is improved.

In other usage modes, the two connecting pieces 256 may be rotated together in opposite directions, each connecting piece 256 rotates relatively to the corresponding second circular arc groove 2511 of the fixing base 251 through the second circular arc rail 2541 of the corresponding rotating piece 254, meanwhile, the first limiting portion 2540 on the rotating piece 254 slides and rotates in the first limiting groove 2333, specifically, the first limiting portion 2540 moves from the second limiting section 2333b of the first limiting groove 2333 to the first limiting section 2333a, and the first circular arc rail 2562 rotates in the corresponding first circular arc groove 2332; meanwhile, the two connecting pieces 256 drive the rotating parts 2611 of the corresponding driven pieces 261 to rotate relative to the fixed seat 251 so that the two driven pieces 261 are close to each other, and the second limiting part 263 and the third limiting part 265 on each driven piece 261 slide and rotate synchronously in the second limiting groove 2335 and the third limiting groove 2561 respectively, specifically, the second limiting part 263 moves from the second limiting section 2335b of the second limiting groove 2335 to the first limiting groove 2335a, and the third limiting part 265 moves from the second limiting section 2561b of the third limiting groove 2561 to the first limiting groove 2561a; meanwhile, the two connecting pieces 256 drive the rotating parts 2711 on the corresponding positioning pieces 271 to rotate relative to the fixing seat 251 to enable the two positioning pieces 271 to be close to each other, and drive the guide slide rail 2710 of the positioning piece 271 to be slidably inserted into the guide slide groove 2566, the first end of the fourth limiting part 272 on the positioning piece 271 slides and rotates in the fourth limiting groove 2337, specifically, the first end of the fourth limiting part 272 moves from the second limiting section 2337b of the fourth limiting groove 2337 to the first limiting section 2337a, so as to drive the two side supporting pieces 233 to be close to each other until the two side supporting pieces 233 and the fixing seat 251 enclose a cross section into a water drop shape.

When the rotating shaft device 22 is unfolded from the fully folded state, one of the connecting pieces 256 is unfolded away from the other connecting piece 256 relative to the fixed seat 251, the one connecting piece 256 drives the second circular arc rail 2541 of the rotating piece 254 to rotate in the second circular arc groove 2511 of the fixed seat 251 and away from the other connecting piece 256, the first limiting portion 2540 on the rotating piece 254 slides and rotates in the first limiting groove 2333, specifically, the first limiting portion 2540 moves from the first limiting section 2333a to the second limiting section 2333b of the first limiting groove 2333, and the first circular arc rail 2562 rotates in the corresponding first circular arc groove 2332; meanwhile, the one connecting piece 256 drives the rotating portion 2611 of the corresponding driven piece 261 to rotate relative to the fixed seat 251 so that the two driven pieces 261 are separated from each other, and drives the second limiting portion 263 and the third limiting portion 265 on the driven piece 261 to synchronously slide and rotate in the second limiting groove 2335 and the third limiting groove 2561 respectively, specifically, the second limiting portion 263 moves from the first limiting groove 2335a to the second limiting section 2335b of the second limiting groove 2335, and the third limiting portion 265 moves from the first limiting groove 2561a to the second limiting section 2561b of the third limiting groove 2561; the rotating part 2711 on the positioning part 271 is driven by one of the connecting parts 256 to rotate relative to the fixing seat 251 to separate the two positioning parts 271 from each other, and to drive the sliding rail 2710 to be slidably inserted into the sliding groove 2566, the first end of the fourth limiting part 272 slides in the fourth limiting groove 2337 and rotates, specifically, the first end of the fourth limiting part 272 moves from the first limiting section 2337a to the second limiting section 2337b of the fourth limiting groove 2337, so as to drive the two side supporting parts 233 to be mutually unfolded until the two side supporting parts 233 and the fixing seat 251 are in a flattened state.

In the flattening process of the side support member 233 relative to the fixing seat 251, the first limiting portion 2540 moves from the second limiting section 2333b of the first limiting groove 2333 to the first limiting section 2333a, the second limiting portion 263 moves from the first limiting groove 2335a of the second limiting groove 2335 to the second limiting section 2335b, the third limiting portion 265 moves from the first limiting groove 2561a of the third limiting groove 2561 to the second limiting section 2561b, and the first end of the fourth limiting portion 272 moves from the first limiting section 2337a of the fourth limiting groove 2337 to the second limiting section 2337b, the first end of the fourth limiting portion 272 gradually breaks away from the abutment with the guide sliding surface 2338b, and the elastic member elastically resets to drive the second end of the fourth limiting portion 272 to break away from the clamping connection with the stop portion 2567; at this time, the positioning portion 2719 of the positioning member 271 is disengaged from the catch portion 2339 of the corresponding side support member 233 to facilitate the flattening of the rotation shaft device 22; in addition, the side supporting piece 233 is simultaneously constrained by the first limiting portion 2540 and the first limiting groove 2333, the second limiting portion 263 and the second limiting groove 2335, the third limiting portion 265 and the third limiting groove 2561, and the fourth limiting portion 272 and the fourth limiting groove 2337 in the flattening process, so that the flattening process of the rotating shaft device 22 is stable, the flattening flexibility of the rotating shaft device 22 is improved, the flattening of the rotating shaft device 22 is facilitated, and the precision of the rotating shaft device 22 in the flattening process is improved.

In other usage modes, the two connecting pieces 256 can be rotated together in a direction away from each other, each connecting piece 256 is relatively rotated away from the corresponding second circular arc groove 2511 of the fixing seat 251 through the second circular arc rail 2541 of the corresponding rotating piece 254, meanwhile, the first limiting portion 2540 on the rotating piece 254 slides and rotates in the first limiting groove 2333, specifically, the first limiting portion 2540 moves from the first limiting section 2333a to the second limiting section 2333b of the first limiting groove 2333, and the first circular arc rail 2562 rotates in the corresponding first circular arc groove 2332; meanwhile, the two connecting pieces 256 drive the rotating parts 2611 of the corresponding driven pieces 261 to rotate relative to the fixed seat 251 so that the two driven pieces 261 are far away from each other, and the second limiting part 263 and the third limiting part 265 on each driven piece 261 slide and rotate synchronously in the second limiting groove 2335 and the third limiting groove 2561 respectively, specifically, the second limiting part 263 moves from the first limiting groove 2335a to the second limiting section 2335b of the second limiting groove 2335, and the third limiting part 265 moves from the first limiting groove 2561a to the second limiting section 2561b of the third limiting groove 2561; meanwhile, the two connecting pieces 256 drive the rotating portions 2711 on the corresponding positioning pieces 271 to rotate relative to the fixing base 251 to enable the two positioning pieces 271 to be far away from each other, and drive the guide rail 2710 of the positioning piece 271 to be slidably inserted into the guide chute 2566, the first end of the fourth limiting portion 272 on the positioning piece 271 slides and rotates in the fourth limiting groove 2337, specifically, the first end of the fourth limiting portion 272 moves from the first limiting section 2337a to the second limiting section 2337b of the fourth limiting groove 2337, so as to drive the two side supporting pieces 233 to be far away from each other synchronously until the front faces of the two side supporting pieces 233 are flush with the front faces of the fixing base 251.

In some embodiments, a linkage gear mechanism is disposed between the rotating portions 2611 of the two driven members 261, and the linkage gear mechanism includes first gears and a gear combination respectively disposed on the outer peripheral surfaces of the rotating portions 2611, and the gear combination includes at least two second gears, where the two first gears are respectively meshed with the two first gears. One of the followers 261 rotates relative to the fixed seat 251 to drive a first gear on the one follower 261 to rotate, and the rotation of the first gear drives the first gear on the other follower 261 to synchronously rotate through the gear combination, so that the two followers 261 synchronously fold or synchronously unfold relative to the fixed seat 251, and the two side support pieces 233 synchronously fold or synchronously unfold.

In some embodiments, the outer circumferences of the rotating portions 261 of the two followers 261 are respectively provided with gears, and the gears on the two rotating portions 261 are meshed with each other. One of the followers 261 rotates relative to the fixed seat 251 to drive a gear on the other follower 261 to rotate, and the rotation of the gear drives the gear on the other follower 261 to synchronously rotate, so that the two followers 261 synchronously fold or synchronously unfold relative to the fixed seat 251, and the two side support pieces 233 synchronously fold or synchronously unfold.

In some embodiments, a linkage gear mechanism is disposed between the rotating portions 2711 of the two positioning members 271, and the linkage gear mechanism includes first gears and a gear combination respectively disposed on the outer peripheral surfaces of the rotating portions 2711, and the gear combination includes at least two second gears, where the two first gears are respectively meshed with the two first gears. One of the positioning members 271 rotates relative to the fixed seat 251 to drive the first gear on one of the positioning members 271 to rotate, and the rotation of the first gear drives the first gear on the other positioning member 271 to synchronously rotate through the gear combination, so that the two positioning members 271 can synchronously fold or synchronously unfold relative to the fixed seat 251, and the two side supporting members 233 can synchronously fold or unfold.

In some embodiments, gears are provided on the outer circumferences of the rotating portions 2711 of the two positioning pieces 271, respectively, and the gears on the two rotating portions 2711 are engaged with each other. One of the positioning members 271 rotates relative to the fixed seat 251 to drive the gear on one of the positioning members 271 to rotate, and the rotation of the gear drives the gear on the other positioning member 271 to synchronously rotate, so that the two positioning members 271 synchronously fold or synchronously unfold relative to the fixed seat 251, and the two side supporting members 233 synchronously fold or synchronously unfold.

In some embodiments, the rotating shaft device 22 further includes a hover mechanism, where the hover mechanism includes a pushing member disposed at an end of the rotating portion 2611 of the pushing member 261, a pushing member that pushes against the pushing member, and an elastic member that provides an elastic force that pushes against each other between the pushing member and the pushing member, the pushing member 261 on opposite sides of the fixing base 251 rotates relative to the fixing base 251, the pushing member rotates with the rotating portion 2611 relative to the pushing member, the elastic member is elastically pressed to elastically deform, and a friction resistance between the pushing member and the pushing member positions the pushing member 261 relative to the fixing base 251, so as to achieve that the side supporting member 233 is positioned at a specific angle relative to the fixing base 251. The specific angle ranges from 70 degrees to 130 degrees between the two side supports 233. Specifically, when the two side supporting pieces 233 of the rotation shaft device 22 are unfolded or folded to be equal to or greater than 70 degrees and less than or equal to 130 degrees in synchronization with each other by the rotation assembly 25, the driven assembly 26 and the positioning mechanism 27, the friction assistance between the pushing piece and the holding piece positions the two side supporting pieces 233, i.e., the two side supporting pieces 233 do not rotate with each other without an external force. Specifically, the pushing member includes a plurality of first cams arranged along a rotation axis of the rotating portion 2611, the pushing member includes a plurality of second cams rotatably engaged with the plurality of first cams, the first cams and the second cams are rotatably abutted against each other, and the elastic member elastically pushes the pushing member. When the first cam rotates relative to the second cam, the first cam rotationally pushes the second cam to slide away from or close to the rotating portion 2611, the elastic member is pressed, and the friction resistance between the first cam and the second cam can limit the pushing member to a specific angle relative to the supporting member.

In some embodiments, the rotating shaft device 22 further includes a hover mechanism, where the hover mechanism includes a pushing member disposed at an end of the rotating portion 2711 of the positioning member 271, a pushing member pushing against the pushing member, and an elastic member, where the elastic member provides an elastic force between the pushing member and the pushing member, the positioning members 271 on opposite sides of the fixing base 251 rotate relative to the fixing base 251, the pushing member rotates with the rotating portion 2711 relative to the pushing member, the elastic member is elastically pressed to elastically deform, and a friction resistance between the pushing member and the pushing member positions the positioning member 271 relative to the fixing base 251 to achieve positioning of the side supporting member 233 at a specific angle relative to the fixing base 251. Specifically, the pushing member includes a plurality of first cams arranged along a rotation axis of the rotating portion 2711, the pushing member includes a plurality of second cams rotatably engaged with the plurality of first cams, the first cams and the second cams rotatably abut against each other, and the elastic member elastically pushes the pushing member. When the first cam rotates relative to the second cam, the first cam rotationally pushes the second cam to slide away from or close to the rotating part 2711, the elastic piece is pressed, and the friction resistance between the first cam and the second cam can enable the pushing piece to be limited to a specific angle relative to the supporting piece.

In some embodiments, the rotating shaft device 22 further includes two hovering mechanisms, where one hovering mechanism includes a pushing member disposed at an end of the rotating portion 2611 of the pushing member 261, a pushing member that pushes against the pushing member, and an elastic member that provides an elastic force between the pushing member and the pushing member that pushes against each other, the pushing member 261 on opposite sides of the fixing base 251 rotates relative to the fixing base 251, the pushing member rotates with the rotating portion 2611 relative to the pushing member, the elastic member is elastically pressed to elastically deform, and a friction resistance between the pushing member and the pushing member positions the pushing member 261 relative to the fixing base 251, so as to achieve positioning of the side supporting member 233 at a specific angle relative to the fixing base 251. The other hovering mechanism comprises a pushing member arranged at the end of the rotating part 2711 of the positioning member 271, a pushing member pushing against the pushing member, and an elastic member, wherein the elastic member provides elastic force for pushing against each other between the pushing member and the pushing member, the positioning members 271 at two opposite sides of the fixed seat 251 rotate relative to the fixed seat 251, the pushing member rotates relative to the pushing member along with the rotating part 2711, the elastic member is elastically extruded to elastically deform, and friction resistance between the pushing member and the pushing member enables the positioning member 271 to be positioned relative to the fixed seat 251 so as to realize that the side supporting member 233 is positioned at a specific angle relative to the fixed seat 251.

Referring to fig. 1-4, the installed rotating shaft device 22 is disposed between two frames 21, the connecting members 256 on opposite sides of the back cover 28 are respectively received in the receiving slots 216 of the two frames 21, and the two connecting members 256 are respectively and fixedly connected to the two frames 21. At this time, the front surfaces 211 of the two frames 21, the front surfaces of the two side supporting members 233 and the front surface 2311 of the fixing base 251 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 faces the rotating shaft device 22, and the two non-bendable regions 33 respectively face the front of the two frames 21. When the flexible screen 30 is in the flattened state, the front face of the fixing base 251 is flush with the front faces of the two side supports 233, and the two side supports 233 are kept in the flattened state; because the front surface 2331 of the side supporting piece 233 is coplanar with the front surface of the fixing seat 251, the flexible screen 30 is not impacted by the step difference when in a flattened state, the flexible screen 30 is not subjected to the adverse problems of color points, bright spots and the like, the reliability of the flexible screen 30 is ensured, meanwhile, the touch hand feeling of the flexible screen 30 is also improved, and the use experience of a user is improved; in addition, the rotation member 254 is cooperatively connected with the first limiting portion 2540 through the arc-shaped first limiting groove 2333, the driven member 261 is cooperatively connected with the side supporting member 256 through the second limiting portion 263 and the arc-shaped second limiting groove 2335, the driven member 261 is cooperatively connected with the connecting member 256 through the third limiting portion 265 and the arc-shaped third limiting groove 2561, the positioning member 271 is cooperatively connected with the side supporting member 233 through the fourth limiting portion 272 and the arc-shaped fourth limiting groove 2337, and the side supporting member 233 is cooperatively connected with the connecting member 256 through the first arc-shaped rail 2562 and the first arc-shaped groove 2332, so that the connection between each element in the rotating shaft device 22 is more compact, the overall width of the rotating shaft device 22 is reduced, the occupied 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; and the rotating shaft device 22 has better motion constraint, so that the stability of the rotating shaft device 22 in the folding or flattening process is improved.

Referring to fig. 25-36, 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 rotating mechanism 253 connected to the two frames 21 rotates in directions adjacent to each other, the bending of the rotating shaft device 22 is achieved through the driven component 26 and the positioning mechanism 27, and the bendable region 31 of the flexible screen 30 bends along with the rotating shaft device 22. Specifically, if a bending force is applied to one of the frames 21, the one of the frames 21 drives the corresponding rotating member 254 to rotate relative to the fixed seat 251 toward the side close to the flexible screen 30, specifically, the second circular arc rail 2541 of the rotating member 254 and the second circular arc slot 2511 of the fixed seat 251 rotate relative to each other to make the two rotating members 254 approach each other; the first limiting portion 2540 on the rotating member 254 slides and rotates in the first limiting groove 2333, specifically, the first limiting portion 2540 moves from the second limiting section 2333b of the first limiting groove 2333 to the first limiting section 2333a; meanwhile, the connecting piece 256 on one of the frames 21 drives the rotating portion 2611 of the corresponding driven piece 261 to rotate relative to the fixed seat 251 so as to make the two driven pieces 261 approach each other, and drives the second limiting portion 263 and the third limiting portion 265 on the driven piece 261 to slide and rotate synchronously in the second limiting groove 2335 and the third limiting groove 2561 respectively, specifically, the second limiting portion 263 moves from the second limiting section 2335b of the second limiting groove 2335 to the first limiting groove 2335a, and the third limiting portion 265 moves from the second limiting section 2561b of the third limiting groove 2561 to the first limiting groove 2561a; the connecting piece 256 on one of the frames 21 drives the rotating part 2711 on the positioning piece 271 to rotate relative to the fixed seat 251 so as to enable the two positioning pieces 271 to approach each other, and drives the guide rail 2710 to be slidably inserted into the guide chute 2566, the first end of the fourth limiting part 272 slides in the fourth limiting groove 2337 and rotates, specifically, the first end of the fourth limiting part 272 moves from the second limiting section 2337b of the fourth limiting groove 2337 to the first limiting section 2337a, and meanwhile, the connecting piece 256 drives the first circular arc rail 2562 to be rotationally connected in the corresponding first circular arc groove 2332 so as to drive the two side supporting pieces 233 to be close to each other, so that the rotating shaft device 22 is in a bending state; the bendable region 31 of the flexible screen 30 is bent along with the rotating shaft device 22 until the front surfaces of the two non-bending regions 33 of the flexible screen 30 are mutually attached, and the bendable region 31 is bent into a water drop shape, so that seamless folding of the electronic device 100 is realized.

In the process of bending the electronic device 100, the first end of the fourth limiting portion 272 slidably abuts against the guiding sliding surface 2338b until the first end is positioned at the abutting portion 2338a, the abutting portion 2338a abuts against the fourth limiting portion 272 to slide along the guiding sliding hole 2717, and the elastic member is extruded until the second end of the fourth limiting portion 272 is clamped to the stop portion 2567 of the connecting member 256; at this time, the positioning portion 2719 of the positioning member 271 is in stop fit with the blocking portion 2339 of the corresponding side supporting member 233, and the positioning portions 2334 on the side supporting member 233 are respectively blocked with the corresponding blocking portions 217 of the frame 21, so as to enhance the limiting effect of the rotating shaft device 22 in the fully folded state, and maintain the rotating shaft device 22 in the stable folded state, thereby improving the protection of the rotating shaft device 22 on the flexible screen 30 when the electronic device 100 falls, that is, the side supporting member 233 is not easy to displace relative to the fixing base 251 when the electronic device 100 falls, avoiding displacement between the side supporting member 233 and the flexible screen 30, and improving the reliability of the whole machine. Secondly, the side support 233 is simultaneously restrained by each limiting part and the corresponding limiting groove in the folding process, so that the motion restraint of folding or flattening the side support 233 is increased, the position stability of the side support 233 in the folding or flattening process is ensured, the folding flexibility of the rotating shaft device 22 is improved, the electronic equipment 100 is convenient to bend, and the precision of the electronic equipment 100 in the folding process is improved. In addition, the bendable region 31 of the flexible screen 30 is bent to form a droplet shape, and the duty ratio of the bent bendable region 31 is reduced, so that 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, and the two frames 21 respectively drive the two rotating mechanisms 253 to rotate towards one side close to the flexible screen 30, and bending of the electronic device 100 can be achieved through the rotating shaft device 22.

When it is necessary to flatten the electronic apparatus 100, one of the frames 21 is pulled outward, so that the two rotating mechanisms 253 connected to the two frames 21 are rotated in directions away from each other. Specifically, an outward pulling force is applied to one of the frames 21 of the electronic device 100, where the one frame 21 drives the corresponding rotating member 254 to rotate relative to the fixed seat 251 toward a side away from the flexible screen 30, so that the two rotating members 254 are away from each other, and the driven member 261 and the positioning member 271 rotate relative to the fixed seat 251 toward a side away from the flexible screen 30, so that the two driven members 261 are away from each other and the two positioning members 271 are away from each other; the second circular arc rail 2541 of the rotating member 254 rotates relatively along the second circular arc groove 2511 of the fixed seat 251, meanwhile, the first limiting portion 2540 of the rotating member 254 slides and rotates in the corresponding first limiting groove 2333, and the first limiting portion 2540 moves from the first limiting section 2333a to the second limiting section 2333b; the second limiting part 263 and the third limiting part 265 on the driven piece 261 slide and rotate synchronously in the second limiting groove 2335 and the third limiting groove 2561 respectively, namely, the second limiting part 263 moves from the first limiting groove 2335a to the second limiting section 2335b of the second limiting groove 2335, and the third limiting part 265 moves from the first limiting groove 2561a to the second limiting section 2561b of the third limiting groove 2561; the first end of the fourth limiting portion 272 of the positioning member 271 slides and rotates in the fourth limiting groove 2337, specifically, the first end of the fourth limiting portion 272 moves from the first limiting section 2337a to the second limiting section 2337b of the fourth limiting groove 2337; to drive the two side supports 233 away from each other so that the hinge assembly 22 is extended and the bendable region 31 of the flexible screen 30 is extended with the hinge assembly 22 until the flexible screen 30 is flattened.

In the process of flattening the electronic device 100, each of the limiting parts slides and rotates in the corresponding limiting groove, so that the motion constraint on the side support 233 is increased, and the position of the rotating shaft device 22 is stabilized in the flattening process, so that the precision of the electronic device 100 in the flattening process is improved.

In other bending modes of the electronic device 100, an outward pulling force may be applied to the two frames 21 at the same time, the two frames 21 respectively drive the two rotating mechanisms 253, the two driven members 261 and the two positioning members 271 to 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 through the rotating component 25, the driven component 26 and the positioning mechanism 27, because the rotating component 254 and the side supporting component 233 are slidingly and rotationally connected through the matching of the arc-shaped first limiting groove 2333 and the first limiting portion 2540, the driven component 261 and the side supporting component 233 are slidingly and rotationally connected through the matching of the arc-shaped second limiting groove 2335 and the second limiting portion 263, the driven component 261 and the connecting component 256 are slidingly and rotationally connected through the matching of the arc-shaped third limiting groove 2561 and the third limiting portion 265, the positioning component 271 and the side supporting component 233 are slidingly and rotationally connected through the matching of the arc-shaped fourth limiting groove 2337 and the fourth limiting portion 272, and the side supporting component 233 and the connecting component 256 are rotationally connected through the matching of the first arc-shaped rail 2562 and the first arc-shaped groove 2332; therefore, the connection between the components in the rotating shaft device 22 can be more 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, each limit groove is matched with each limit part, so that the motion constraint of the rotating shaft device 22 is enhanced, the rotating shaft device 22 is stable in position in the folding or flattening process, the precision of the rotating shaft device 22 in the folding or flattening process is improved, the folding flexibility of the rotating shaft device 22 is improved, and the folding or flattening of the rotating shaft device 22 is facilitated. In addition, in the completely folded state of the electronic device 100, the positioning portion 2334 on the side support member 233 is respectively engaged with the corresponding engaging portion 217 of the frame 21, the positioning portion 2719 of the positioning member 271 is in stop engagement with the corresponding blocking portion 2339 of the side support member 233, and the second end of the fourth limiting portion 272 on the positioning member 271 is engaged with the corresponding blocking portion 2567 of the connecting member 256; therefore, the limiting effect of the rotating shaft device 22 in the completely folded state is enhanced, the rotating shaft device 22 is kept in a stable folded state, so that the protection of the rotating shaft device 22 to the flexible screen 30 when the electronic equipment 100 falls is improved, and the lateral support 233 is not easy to displace relative to the fixing seat 251 when the electronic equipment 100 falls, so that the flexible screen 30 is prevented from being damaged due to displacement between the lateral support 233 and the flexible screen 30, and the overall strength of the electronic equipment 100 is improved.

In some embodiments, the first limiting portion 2540 on the rotation member 254 and the first limiting groove 2333 on the side support 233 may be omitted, i.e., the rotation member 254 is not directly connected to the side support 233. The side supporting piece 233 is connected with the connecting piece 256 through the first circular arc groove 2332 and the first circular arc rail 2562 in a matched manner, the side supporting piece 233 is connected with the driven piece 261 through the second arc limiting groove 2335 and the second limiting portion 263 in a matched manner, and the side supporting piece 233 is connected with the positioning piece 271 through the fourth arc limiting groove 2337 and the fourth limiting portion 272 in a matched manner; therefore, the connection between the elements in the rotating shaft device can be more compact, so that the overall width of the rotating shaft device is reduced, the internal space of the shell 20 is reduced, the layout of other elements such as a main board or a battery is facilitated, the process for processing the first limiting part 2540 and the first limiting groove 2333 is reduced, and the cost is reduced. Secondly, the motion constraint of the second limiting part 263 and the second limiting groove 2335, and the motion constraint of the fourth limiting part 272 and the fourth limiting groove 2337 strengthen the motion constraint of the rotating shaft device, so that the rotating shaft device is stable in position in the folding or flattening process, the precision of the rotating shaft device in the folding or flattening process is improved, the flexibility of the folding or flattening of the rotating shaft device is improved, and the folding or flattening of the rotating shaft device is facilitated. In addition, in the fully folded state of the rotating shaft device, the positioning portion 2719 of the positioning member 271 is in stop fit with the blocking portion 2339 of the corresponding side supporting member 233, and the second end of the fourth limiting portion 272 on the positioning member 271 is blocked and connected with the blocking portion 2567 of the corresponding connecting member 256; therefore, the limiting effect of the rotating shaft device in the complete folding state is enhanced, the rotating shaft device is kept in a stable folding state, and the integral strength of the rotating shaft device is improved.

In some embodiments, the fourth stop 272 on the positioning member 271 and the fourth stop slot 2337 on the side support 233 may be omitted. The side supporting piece 233 is connected with the connecting piece 256 through the first arc groove 2332 and the first arc rail 2562 in a matched manner, the side supporting piece 233 is connected with the rotating piece 254 through the first arc groove 2332 and the first limiting portion 2540 in a matched manner, and the side supporting piece 233 is connected with the driven piece 261 through the second limiting groove 2335 in a matched manner and the second limiting portion 263 in a matched manner; therefore, the connection between the elements in the rotating shaft device can be more compact, so that the overall width of the rotating shaft device is reduced, the internal space of the shell 20 is reduced, the layout of other elements such as a main board or a battery is facilitated, the process for processing the fourth limiting part 272 and the fourth limiting groove 2337 is reduced, and the cost is reduced. Secondly, the motion constraint of the first circular arc groove 2332 and the first limiting portion 2540 and the motion constraint of the second limiting groove 2335 and the second limiting portion 263 strengthen the motion constraint of the rotating shaft device, so that the rotating shaft device is stable in position in the folding or flattening process, the precision of the rotating shaft device in the folding or flattening process is improved, the flexibility of folding or flattening of the rotating shaft device is improved, and the folding or flattening of the rotating shaft device is facilitated. In addition, in the fully folded state, the positioning portion 2719 of the positioning member 271 is in stop fit with the blocking portion 2339 of the corresponding side support 233; therefore, the limiting effect of the rotating shaft device in the complete folding state is enhanced, the rotating shaft device is kept in a stable folding state, and the integral strength of the rotating shaft device is improved.

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:

a support mechanism comprising two side supports;

the rotating assembly comprises a fixed seat and rotating mechanisms arranged on two opposite sides of the fixed seat, the rotating mechanisms comprise rotating pieces and connecting pieces, and two opposite ends of the rotating pieces are respectively connected with the fixed seat and the connecting pieces in a rotating way; and

the driven assembly comprises a driven piece, one end of the driven piece is rotationally connected with the fixed seat, and the other end of the driven piece far away from the fixed seat is respectively connected with the connecting piece and the side supporting piece;

the rotating piece is connected to the side supporting piece, and the connecting piece is connected with the side supporting piece in a rotating way; when the two connecting pieces are mutually closed, the two rotating pieces rotate relative to the positioning seat and the connecting pieces to be mutually closed, the rotating pieces are connected with the corresponding side supporting pieces in a sliding and rotating mode, the two driven pieces rotate relative to the positioning seat, and one end, away from the fixed seat, of each driven piece slides relative to the connecting piece and the corresponding side supporting piece and rotates to enable the two driven pieces to be mutually closed, so that the two side supporting pieces are mutually folded; when the two connecting pieces are far away from each other, the two rotating pieces rotate relative to the positioning seat and the connecting pieces to be far away from each other, the rotating pieces are connected with the corresponding side supporting pieces in a sliding and rotating mode, the two driven pieces rotate relative to the positioning seat, and one end, far away from the fixing seat, of the driven pieces slides and rotates relative to the connecting pieces and the side supporting pieces to enable the two driven pieces to be far away from each other, so that the two side supporting pieces are unfolded mutually.

2. The rotary shaft device according to claim 1, wherein the rotating member and the side supporting member are slidably and rotatably connected by a first limit groove provided in one of the rotating member and the side supporting member and a first limit portion provided in the other of the rotating member and the side supporting member.

3. The rotary shaft device according to claim 2, wherein the first limit groove comprises a first limit section and a second limit section at opposite ends thereof, the first limit section being closer to the fixing base than the second limit section; when the side support piece is in a flattening state relative to the fixed seat, the first limiting part is limited on the second limiting section; when the side supporting piece is in a complete bending state relative to the fixing seat, the first limiting part is limited on the first limiting section.

4. The rotating shaft device according to claim 2, wherein the side supporting member includes a side supporting plate, a first bump is disposed on a back surface of the side supporting plate, the first limit groove is disposed on a side of the first bump near the fixing base, the first limit groove is bent toward a side far away from the side supporting plate, and the first limit portion includes a first limit shaft connected to the rotating member and penetrating into the first limit groove.

5. The spindle apparatus of claim 1, wherein the follower and the side support are slidably and rotatably coupled by a second limit groove provided in one of the follower and the side support, and a second limit portion provided in the other of the follower and the side support; the driven piece and the connecting piece are connected in a sliding and rotating manner through the matching of a third limiting groove and a third limiting part, the third limiting groove is formed in one of the driven piece and the connecting piece, and the third limiting part is formed in the other of the driven piece and the connecting piece.

6. The apparatus of claim 5, wherein the second limiting groove includes a first limiting section and a second limiting section at opposite ends thereof, the first limiting section being closer to the fixed seat than the second limiting section; the third limiting groove comprises a first limiting section and a second limiting section at two opposite ends, and the first limiting section of the third limiting groove is closer to the fixing seat than the second limiting section; when the side supporting piece is in a flattening state relative to the fixing seat, the second limiting part is limited on the second limiting section of the second limiting groove, and the third limiting part is limited on the second limiting section of the third limiting groove; when the side supporting piece is in a complete bending state relative to the fixing seat, the second limiting part is limited on the first limiting section of the second limiting groove, and the third limiting part is limited on the first limiting section of the third limiting groove.

7. The spindle apparatus of claim 5, wherein the side support includes a side support plate, the follower is positioned on a back side of the side support plate, and the second and third limit grooves are each curved to a side remote from the side support plate.

8. The rotating shaft device according to claim 5, wherein a second bump is disposed on a back surface of the side supporting plate, the second limiting groove is disposed on the second bump, the third limiting groove is disposed on the connecting piece, the second limiting portion includes a second limiting shaft connected to the driven piece and penetrating through the second limiting groove, and the third limiting portion includes a third limiting shaft connected to the driven piece and penetrating through the third limiting groove.

9. The rotating shaft device according to claim 8, wherein a clearance groove is formed in an end of the driven member away from the fixing seat, the clearance groove is used for accommodating the second bump, and the second limiting shaft and the third limiting shaft are coaxial.

10. The apparatus according to claim 1, further comprising a positioning mechanism, wherein the positioning mechanism comprises a positioning member rotatably connected to the fixing base, wherein the positioning member is slidably connected to the connecting member, and wherein an end of the positioning member remote from the fixing base is movably connected to the side supporting member.

11. The apparatus according to claim 10, wherein the positioning member and the side supporting member are slidably and rotatably connected by a fourth limiting groove provided in one of the positioning member and the side supporting member, and the fourth limiting portion is provided in the other of the positioning member and the side supporting member.

12. The apparatus of claim 11, wherein the fourth slot includes a first and a second stop segments at opposite ends thereof, the first stop segment being closer to the mount than the second stop segment; when the side support piece is in a flattening state relative to the fixed seat, the first limiting part is limited on the second limiting section; when the side supporting piece is in a complete bending state relative to the fixing seat, the first limiting part is limited on the first limiting section.

13. The rotating shaft device according to claim 11, wherein the side supporting member includes a side supporting plate, a third bump is provided on a back surface of the side supporting plate, the fourth limiting groove is provided on the third bump, the fourth limiting groove is bent to a side far away from the side supporting plate, and the fourth limiting portion includes a fourth limiting shaft connected to the positioning member and penetrating into the fourth limiting groove.

14. The apparatus of claim 13, wherein a clearance groove is formed at an end of the positioning member away from the fixing base, and the third protrusion is accommodated in the clearance groove.

15. The rotating shaft device according to claim 13, wherein a stop part is arranged at the position of the connecting piece corresponding to the positioning piece, and a propping part is arranged at one end, close to the fixed seat, of the fourth limiting groove of the third lug; when the side supporting piece is in a complete bending state relative to the fixing seat, the first end of the fourth limiting shaft abuts against the abutting portion, so that the second end of the fourth limiting shaft is matched with the stopping portion in a stopping position.

16. The spindle apparatus of claim 15, wherein the positioning mechanism further comprises a resilient member having a pre-spring force for urging the second end of the fourth limit shaft away from the stop.

17. The apparatus according to claim 16, wherein the end of the abutment portion away from the fixing base is provided with a sliding guide surface, and during bending of the side support member relative to the fixing base, the first end of the fourth limiting shaft slidably abuts against the sliding guide surface, so that the second end of the fourth limiting shaft moves toward the stop portion, and the elastic member is elastically deformed until the second end of the fourth limiting shaft is engaged with the stop portion.

18. The rotating shaft device according to claim 1, wherein the positioning member includes a positioning portion, the positioning portion is disposed on a side of the positioning member away from the fixing base, the side support member includes a side support plate and a blocking portion, and the blocking portion is disposed on a side of the side support plate away from the fixing base; when the side supporting piece is in a complete bending state relative to the fixing seat, the positioning part is matched with the blocking part in a stopping position.

19. The apparatus according to claim 1, wherein the positioning member and the connecting member are connected by a mating connection of a guide chute and a guide rail, the guide chute extends in a direction perpendicular to a rotation axis between the positioning member and the fixing base, the guide chute is disposed on one of the positioning member and the connecting member, and the guide rail is disposed on the other of the positioning member and the connecting member.

20. A folding casing, characterized in that the folding casing comprises a rotating shaft device according to any one of claims 1 to 19 and two frames, wherein the rotating shaft device is positioned between the two frames, the two frames are respectively connected with connecting pieces of two rotating mechanisms of the rotating shaft device, and the two frames are mutually folded or mutually unfolded through the rotating shaft device.

21. The folding housing of claim 20, wherein a positioning portion is provided on a side of the side support of the rotating shaft device facing away from the fixing base, and a locking portion is provided on a side of the frame body adjacent to the rotating shaft device; when the two frame bodies are in a completely folded state, the positioning parts of the side support pieces are matched with the locking parts in a stopping mode.

22. An electronic device comprising a flexible screen and a folding housing according to claim 20 or 21, wherein two side supports of a hinge means of the folding housing are supported on the back of the flexible screen; the flexible screen is folded or unfolded along with the folding shell.