CN115263907B

CN115263907B - Folding device, folding casing and mobile terminal

Info

Publication number: CN115263907B
Application number: CN202210983035.6A
Authority: CN
Inventors: 张前; 郑泽宽; 史长春
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2023-12-22
Anticipated expiration: 2040-11-03
Also published as: CN112333308B; CN112333308A; CN115263907A

Abstract

The invention provides a folding device which comprises a connecting mechanism, two rotating mechanisms and a supporting mechanism, wherein the two rotating mechanisms are rotationally connected to two opposite sides of the connecting mechanism, the rotating mechanisms comprise a fixed support and rotating arms rotationally connected to the fixed support, the fixed support is provided with a first guide groove, one end of each rotating arm far away from the fixed support is rotationally connected to the connecting mechanism, the supporting mechanism comprises a connecting rod piece and a supporting piece, the connecting rod piece comprises a rotating block rotationally connected to the connecting mechanism and a sliding plate connected to the rotating block far away from the connecting mechanism, the supporting piece comprises a supporting plate, a rotating part arranged on one side of the supporting plate far away from the connecting mechanism, and a sliding part arranged on the supporting plate, the sliding plate is slidably inserted into the first guide groove, the sliding plate is slidingly and rotationally connected to the sliding part of the supporting piece, and the rotating part is rotationally connected with the fixed support through the matching of an arc-shaped groove and an arc-shaped rail. The invention also provides a folding machine shell provided with the folding device and a mobile terminal with the folding machine shell.

Description

Folding device, folding casing and mobile terminal

Technical Field

The present invention relates to the field of electronic devices, and in particular, to a folding device, a folding housing provided with the folding device, and a mobile terminal provided with the folding housing.

Background

Mobile terminals such as smart phones or tablet computers comprise a casing and a display screen arranged on the casing, and along with the development of flexible screen technology, structures with upper and lower inward folding of the display screen, such as folding screen mobile phones, are already developed at present. The existing folding screen mobile phones are generally divided into an inner folding screen mobile phone and an outer folding screen mobile phone, wherein the inner folding screen mobile phone is further divided into a U-shaped inner folding screen mobile phone and a water drop-shaped inner folding screen mobile phone; under the condition of the same thickness of the whole machine, the large inward folding angle and the large curvature radius of the flexible screen can be obtained by adopting the water drop-shaped folding mode, thereby being beneficial to the service life of the flexible screen and having better user experience. However, the existing folding device for driving the display screen to fold in the water-drop-shaped inner folding screen mobile phone is generally arranged at the side edge of the screen, so that the folding device occupies the side frame of the screen, and the appearance of the water-drop-shaped inner folding screen mobile phone is affected.

Disclosure of Invention

The invention aims to provide a folding device for reducing side frames of an occupied screen, a folding machine shell provided with the folding device and a mobile terminal provided with the folding machine shell.

In order to solve the technical problems, the invention provides a folding device, which is characterized by comprising a connecting mechanism, two rotating mechanisms and a supporting mechanism, wherein the two rotating mechanisms are rotationally connected to two opposite sides of the connecting mechanism, the rotating mechanisms comprise a fixed bracket and rotating arms rotationally connected to the fixed bracket, the fixed bracket is provided with a first guide groove, one end of each rotating arm far away from the fixed bracket is rotationally connected to the connecting mechanism, the supporting mechanism comprises a connecting rod piece and a supporting piece, the connecting rod piece comprises a rotating block rotationally connected to the connecting mechanism and a sliding plate connected to the rotating block far away from the connecting mechanism, the supporting piece comprises a supporting plate, a rotating part arranged on one side of the supporting plate far away from the connecting mechanism, and a sliding part arranged on the supporting plate, the sliding plate is slidingly inserted in the first guide groove, the sliding plate is slidingly and rotationally connected to the sliding part of the supporting piece, and the sliding part is rotationally connected with the fixed bracket through a matching groove and an arc rail; the rotating mechanism rotates relative to the connecting mechanism so as to drive the connecting rod piece to slide relative to the rotating mechanism and rotate relative to the connecting mechanism, and the rotating mechanism and the connecting rod piece drive the two supporting pieces to be flattened or folded relatively.

The invention also provides a folding machine shell which is used for supporting the flexible piece, the folding machine shell comprises two opposite frame bodies and a folding device, the folding device is arranged between the two frame bodies, a connecting mechanism of the folding device is positioned in the middle between the two frame bodies, each rotating mechanism is rotationally connected between the connecting mechanism and the corresponding frame body, and the two frame bodies are folded or flattened relatively and drive the two supporting pieces to fold or flatten relatively through the corresponding connecting rod pieces so as to realize the folding or flattening of the flexible piece.

The invention also provides a mobile terminal, which comprises a folding machine shell and a flexible piece, wherein the flexible piece covers the front surface of the folding machine shell, and the flexible piece is folded or flattened along with the folding machine shell.

The folding device of the mobile terminal is arranged between two frames, a supporting mechanism of the folding device is arranged at the back of a flexible piece, a rotating mechanism is arranged between each frame and a connecting mechanism, the supporting mechanism comprises a connecting rod piece and a supporting piece, a rotating block of the connecting rod piece is rotationally connected with the connecting mechanism, a sliding plate of the connecting rod piece is slidingly connected with a fixed bracket of the corresponding rotating mechanism, a rotating part of the supporting piece is rotationally connected with the fixed bracket of the rotating mechanism, and the sliding plate is slidingly and rotationally connected with a sliding part of the supporting piece; the two frames are folded relatively, and the link members drive the pair of rotating mechanisms and the pair of supporting members to fold relatively respectively, so that the flexible member is folded. The supporting mechanism and the rotating mechanism are arranged on the back of the flexible piece, are far away from the side edge of the flexible piece, cannot occupy the side frame of the screen, improve the screen occupation ratio of the mobile terminal, and improve the appearance of the mobile terminal.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, 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 a mobile terminal in a first embodiment of the present invention;

FIG. 2 is an exploded perspective view of the folding chassis and the flexible member of the mobile terminal of FIG. 1;

fig. 3 is a schematic cross-sectional view of a folded chassis of the mobile terminal of fig. 2 in a folded state;

FIG. 4 is an enlarged schematic view of a frame and a folding device in the folding housing of FIG. 2;

FIG. 5 is an exploded perspective view of the frame and folding device of FIG. 4;

FIG. 6 is an exploded perspective view of the connection assembly of the connection mechanism of FIG. 5;

FIG. 7 is a schematic perspective view of another view of the connection assembly of FIG. 6;

FIG. 8 is an exploded perspective view of the folding device of FIG. 5;

FIG. 9 is a schematic perspective view of another view of the folding device of FIG. 8;

FIG. 10 is an enlarged schematic view of the link and support members of the folding device of FIG. 9;

FIG. 11 is a partial perspective assembly schematic view of the folding device of FIG. 8;

FIG. 12 is a further perspective assembly schematic view of the folding device of FIG. 11;

FIG. 13 is a schematic perspective view of another view of the folding device of FIG. 12;

FIG. 14 is a perspective view of the connection assembly of the connection mechanism of FIG. 5 in a folded state relative to the connection frame;

FIG. 15 is a schematic perspective view of another view of the connection mechanism of FIG. 14;

FIG. 16 is a cross-sectional view taken along line XVI-XVI of FIG. 1;

FIG. 17 is a cross-sectional view taken along line XVII-XVII of FIG. 1;

fig. 18 is a schematic perspective view of a folded state of the mobile terminal in the first embodiment of the present invention;

FIG. 19 is an enlarged schematic view of a frame and a folding device in the housing of FIG. 18;

FIG. 20 is a cross-sectional view taken along line XX-XX in FIG. 18;

FIG. 21 is a cross-sectional view taken along line XXI-XXI in FIG. 18;

fig. 22 is an exploded perspective view of a folding device in a second embodiment of the present invention;

FIG. 23 is a schematic perspective view of the folding device of FIG. 22 from another perspective;

FIG. 24 is a perspective view of the folding device of FIG. 22 assembled;

FIG. 25 is a perspective view of the folding device of FIG. 23 assembled;

fig. 26 is a perspective view showing a folded state of the folding device in the second embodiment of the present invention;

fig. 27 is a schematic perspective view of another view of the folding device of fig. 26.

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 invention may be practiced. Directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., in the present invention 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 invention, 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 invention.

In the description of the present invention, 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 invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 5, a mobile terminal 100 according to an embodiment of the invention includes a foldable housing 20 and a flexible member 30 disposed on the foldable housing 20, wherein the foldable housing 20 is used for supporting the flexible member 30. The flexible member 30 may be, but is not limited to, a flexible display screen, a flexible touch display screen, and the like, which are flexible members having corresponding functions. The flexible member 30 covers the front surface of the folder housing 20, and the flexible member 30 is folded or flattened along with the folder housing 20. The folding housing 20 includes two opposite frames 22 and a folding device 23 disposed between the two frames 22. The folding device 23 comprises a connecting mechanism 24 in the middle, two rotating mechanisms 26 rotatably connected to opposite sides of the connecting mechanism 24, and a supporting mechanism 27 connected between the connecting mechanism 24 and each rotating mechanism 26. The connecting mechanism 24 comprises a strip-shaped connecting frame 241 and a connecting component 242 arranged on the connecting frame 241; the connecting frame 241 is located between the two frames 22, two opposite sides of each connecting component 242 are respectively rotatably connected with a rotating mechanism 26, and a supporting mechanism 27 is connected between each rotating mechanism 26 and the connecting component 242. Fig. 4 only illustrates one rotation mechanism 26 and one supporting mechanism 27 located at one side of one connecting component 242 of the connecting mechanism 24, in this embodiment, two opposite ends of the connecting frame 241 between two frames 22 are respectively provided with one connecting component 242, two opposite sides of each connecting component 242 are respectively provided with a pair of rotation mechanisms 26 and a pair of supporting mechanisms 27, i.e. two opposite sides of each connecting component 242 are respectively rotatably connected with one rotation mechanism 26 and one supporting mechanism 27 connected between the rotation mechanism 26 and the connecting component 242. The pair of rotation mechanisms 26 on each link assembly 242 are symmetrically disposed along the link assembly 424 and the pair of support mechanisms 27 on each link assembly 242 are symmetrically disposed along the link assembly 242.

As shown in fig. 4 and 5, each supporting mechanism 27 includes a link member 270 and a supporting member 275, one end of the link member 270 is rotatably connected to the connecting mechanism 24, i.e. one end of the link member 270 is rotatably connected to the connecting assembly 242, the opposite end of the link member 270 is slidably connected to the corresponding rotating mechanism 26, one side of the supporting member 275 away from the connecting mechanism 24 is rotatably connected to the rotating mechanism 26, and the link member 270 is movably connected to the supporting member 275; the two frames 22 are folded or unfolded relatively, the corresponding link member 270 drives the rotating mechanism 26 to rotate relative to the connecting mechanism 24, the link member 270 slides relative to the rotating mechanism 26 and rotates relative to the connecting mechanism 24, so that the rotating mechanism 26 and the link member 270 drive each pair of supporting pieces 275 to be unfolded or folded together, and bending or unfolding of the flexible piece 30 is achieved.

In this embodiment, the folding device 20 of the mobile terminal 100 is located between two frames 22, the folding device 20 includes a connection mechanism 24, a rotation mechanism 26 and a support mechanism 27, one end of a link member 270 of the support mechanism 27 is rotatably connected to the connection mechanism 24, the opposite end is slidably connected to the corresponding rotation mechanism 26, a support 275 of the support mechanism 27 is rotatably connected to the rotation mechanism 26 at a side away from the connection mechanism 24, and the link member 270 is movably connected to the support 275. The two frames 22 are folded or folded relatively, the corresponding link members 270 drive the rotating mechanism 26 to rotate relative to the connecting mechanism 24, the link members 270 slide relative to the rotating mechanism 26 and the supporting members 275 and rotate relative to the connecting mechanism 24, so that the rotating mechanism 26 and the link members 270 drive each pair of supporting members 275 to fold relatively or fold relatively, and bending or flattening of the flexible member 30 is achieved. Specifically, the two frames 22 are relatively close to each other and folded to drive the corresponding link members 270 to rotate, the rotation of the link members 270 and the folding of the frames 22 drive the pair of rotating mechanisms 26 to rotate and close to each other, and the rotating mechanisms 26 and the link members 270 drive the supporting members 275 to rotate and close to each other together, so that the folding device 23 folds to realize the bending of the flexible members 30; the two frames 22 are relatively far away from each other and rotated to be flattened so as to drive the corresponding connecting rod members 270 to rotate, the rotation of the connecting rod members 270 and the flattening of the frames 22 drive a pair of rotating mechanisms 26 to rotate and mutually far away, and the rotating mechanisms 26 and the connecting rod members 270 drive each pair of supporting members 275 to rotate and mutually far away, so that the folding device 23 is flattened so as to flatten the flexible members 30.

The mobile terminal 100 of the present invention 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 car display, and any other products and components 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. It is to be understood that references to "connected" in embodiments of the present invention are to be understood as including, but not limited to, fixed, rotating, sliding, pivoting, screwing, articulating, interfering, friction, elastic, rigid, adhesive, etc., unless otherwise limited by the modifier, prefix or suffix, etc. It will be understood that embodiments of the invention may be referred to as "fixed" and are not limited to two elements being fixed directly, but may be fixed by a third party element or more. It is to be understood that the various specific connection relationships referred to herein as "rotational connection," "sliding connection," "rotational connection," "elastic connection," "rigid connection," "fixed connection," "movable connection," "pivotal connection," "threaded connection," and the like are not limited to two elements being directly connected, but may be connected by a third party element or more other elements unless specifically indicated as being directly connected.

The folding device 23 of the mobile terminal 100 is arranged between the two frames 22, and the supporting mechanism 27 of the folding device 23 is arranged at the back of the flexible piece 30, namely the supporting mechanism 27 is used for supporting the flexible piece 30; a rotating mechanism 26 and a supporting mechanism 27 are arranged between each frame 22 and the connecting mechanism 24, the supporting mechanism 27 comprises a connecting rod piece 270 and a supporting piece 275, one end of the connecting rod piece 270 is rotationally connected with the connecting mechanism 24, the opposite end of the connecting rod piece 270 is slidingly connected with the corresponding rotating mechanism 26 and supporting piece 275, one side of the supporting piece 275 away from the connecting mechanism 24 is rotationally connected with the rotating mechanism 26, and the connecting rod piece 270 is movably connected with the supporting piece 275; therefore, the two frames 22 are folded relatively, the link member 270 drives the pair of rotating mechanisms 26 and the pair of supporting members 275 to fold relatively respectively, so as to bend the flexible member 30, a containing space is enclosed between the pair of supporting members 275 and the connecting mechanism 24, the bending part of the flexible member 30 is contained in the containing space, and the space in the thickness direction of the mobile terminal 100 is occupied after the bending part of the flexible member 30 is bent, so that the overall thickness of the mobile terminal 100 in a folded state is reduced; in addition, the folding device 23 is disposed at the back of the flexible member 30, far away from the side edge of the flexible member 30, and does not occupy the side frame of the screen, so as to improve the screen occupation ratio of the mobile terminal 100 and the appearance of the mobile terminal 100.

As shown in fig. 1 to 3, the flexible member 30 includes a bendable region 31 covering the front surface of the folding device 23, and two non-bending regions 33 connected to opposite sides of the bendable region 31, wherein the bendable region 31 is bent to form a bending portion of the flexible member 30, and the two non-bending regions 33 are respectively connected to the front surfaces of the two frames 22. The folding device 23 is used to support the bendable region 31 of the flexible member 30, and the bendable region 31 is synchronously bent along with the bending of the folding device 23 or is synchronously flattened along with the flattening of the folding device 23. Specifically, during the folding process of the two frames 22, the link members 270 are driven to rotate, the rotation of the link members 270 and the folding of the frames 22 drive the rotating mechanism 26 to rotate, and the rotating mechanism 26 and the link members 270 drive the supporting members 275 to rotate together, so that the supporting members 275 and the connecting mechanism 24 enclose an accommodating space 28, the bendable region 31 is bent along with the folding device 23, and the bendable region 31 is accommodated in the accommodating space 28 after being bent; in the flattening process of the two frames 22, the connecting rod members 270 are driven to rotate, the rotating mechanism 26 is driven to rotate by the rotation of the connecting rod members 270 and the folding of the frames 22, the supporting members 275 are driven to rotate by the rotating mechanism 26 and the connecting rod members 270 together to flatten, and the bendable region 31 is flattened along with the folding device 23. The front side in the present invention refers to the side facing the flexible member 30, and the back side refers to the side facing away from the flexible member 30.

In other embodiments, only one connection assembly 242 is provided on the connection frame 241 between the two frames 22, and preferably, the connection assembly 242 is provided at the middle of the two frames 22. Specifically, the opposite sides of the connecting assembly 242 are provided with a pair of rotating mechanisms 26 and a supporting mechanism 27 connected between each rotating mechanism 26 and the connecting assembly 242, the pair of rotating mechanisms 26 are symmetrical along the connecting assembly 242, and the pair of supporting mechanisms 27 are symmetrical along the connecting assembly 242. Namely, two opposite sides of the connecting assembly 242 are respectively and rotatably connected with one rotating mechanism 26, and a supporting mechanism 27 is connected between each rotating mechanism 26 and the connecting mechanism 24.

In other embodiments, three or more connecting assemblies 242 are disposed on the connecting frame 241 between the two frames 22, and a pair of rotating mechanisms 26 and a pair of supporting mechanisms 27 are disposed on each connecting assembly 242; that is, each pair of rotating mechanisms 26 is rotatably connected to opposite sides of the connecting assembly 242, and each pair of supporting mechanisms 27 is connected between a corresponding pair of rotating mechanisms 26 and the connecting assembly 242.

As shown in fig. 5, a first accommodating groove 221 and a second accommodating groove 223 communicating with the first accommodating groove 221 are provided on a side of each frame 22 near the other frame 22, the first accommodating groove 221 is used for accommodating the connecting frame 241, and the second accommodating groove 223 is used for accommodating the rotating mechanism 26 and the supporting mechanism 27. Specifically, the first receiving groove 221 is disposed at a side of the front surface 220 of each frame 22 near the other frame 22, and the first receiving groove 221 does not penetrate through two opposite sides and the back surface of the frame 22, so as to form a receiving groove at the front portion of the frame 22. A second accommodating groove 223 is arranged on each frame body 22 near the first accommodating groove 221; specifically, the second accommodating grooves 223 are disposed on the front surface 220 of each frame 22 near the first accommodating groove 221, and two opposite ends of the second accommodating groove 223 extend to two opposite sides of the frame 22 respectively, so as to form accommodating grooves on the front surface of the frame 22; the frame 22 is provided with a plurality of locking holes 225 and a plurality of positioning posts 226 at two opposite ends of the bottom surface of the second accommodating groove 223. The first accommodation groove 221 and the second accommodation groove 223 of the two frames 22 enclose an accommodation space for accommodating the folding device 23.

In the present embodiment, as shown in fig. 5, the opposite ends of the connecting frame 241 are respectively provided with connecting assemblies 242, and the opposite sides of each connecting assembly 242 are respectively connected with the rotating mechanism 26 and the supporting mechanism 27, and fig. 5 only illustrates one rotating mechanism 26 and one supporting mechanism 27 on one side of one connecting assembly 242. Specifically, two opposite ends of the front surface of the connection frame 241 are respectively provided with a receiving space 2410, and each connection assembly 242 is disposed in the corresponding receiving space 2410. The connecting frame 241 is provided with a first positioning column 2412 and a clamping column 2414 at one end of the bottom surface of each accommodating space 2410 far away from the other accommodating space 2410, and the first positioning column 2412 is axially provided with a positioning hole 2413; a second positioning column 2415 is arranged at one end of the bottom surface of each accommodating space 2410, which is close to the other accommodating space 2410, the cross section of the second positioning column 2415 along the radial direction is waist-shaped, and a positioning hole 2416 is axially formed in the second positioning column 2415.

Referring to fig. 6 and 7, the connecting assembly 242 includes a connecting assembly 244 and a linkage assembly 247, the connecting assembly 244 includes a first connecting block 245 and a second connecting block 246, the first connecting block 245 includes a rectangular front surface 2451 and opposite side surfaces, two symmetrical arc-shaped grooves 2452 are respectively provided on opposite side surfaces of the first connecting block 245, and each arc-shaped groove 2452 penetrates through the front surface 2451. The opposite ends of the front 2451 of the first connecting block 245 are respectively provided with a connecting hole 2454; the side surface of the first connecting block 245 facing the second connecting block 246 is provided with a clamping block 2455; the side surface of the first connecting block 245, which faces away from the clamping block 2455, is provided with a triangular protruding block 2456 between the two arc-shaped grooves 2452, and the protruding block 2456 is provided with an arc-shaped sliding guide surface 2457 corresponding to the arc-shaped grooves 2452. The back of the first connecting block 245 is provided with a clamping hole 2458. The second connecting block 246 includes a rectangular front surface 2461 and two opposite side surfaces, the front surface 2461 of the second connecting block 246 extends away from the T-shaped supporting plate 2462 on one side of the first connecting block 245, a triangular protruding block 2463 is arranged on the side surface of the second connecting block 246 away from the supporting plate 2462, and arc-shaped sliding guiding surfaces 2464 are arranged on two opposite sides of the protruding block 2463. The side of the bump 2463 away from the support plate 2462 is provided with a clamping hole 2465, and the clamping hole 2465 is used for being clamped with the clamping block 2455. Because the thickness of the support plate 2462 is thinner, a side surface is formed on one side of the second connecting block 246, which is close to the support plate 2462, and two connecting grooves 2466 and two connecting holes 2467 are formed on the side surface, the two connecting grooves 2466 are positioned at opposite ends, and the two connecting holes 2467 are positioned between the two connecting grooves 2466; the bottom surface of the second connecting block 246 is provided with a clamping hole 2468.

The linkage assembly 247 comprises two parallel rotation shafts 2470, a gear set 2471 arranged at one end of the two rotation shafts 2470, a first positioning block 2473, a second positioning block 2475, a propping block 2477, an elastic piece 2478 and a gasket 2479; the gear set 2471 includes two first gears 24711 and two second gears 24713, the end of each rotation shaft 2470 near the second connection block 246 is sleeved with a first gear 24711, and two second gears 24713 are meshed between the two first gears 24711. Each rotating shaft 2470 is kidney-shaped in cross-section at an end remote from the gear set 2471. The middle part of the side surface of the first positioning block 2473, which faces away from the gear set 2471, is provided with a supporting rod 24731; the opposite ends of the first positioning block 2473 are respectively provided with a shaft hole 24732, the two shaft holes 24732 are respectively used for assembling the rotating shafts 2470, and the first positioning block 2473 is provided with two connecting holes 24733 between the two shaft holes 24732. The second positioning block 2475 is rectangular, lugs 24751 are respectively arranged on two opposite sides of the second positioning block 2475, each lug 24751 is provided with a through hole 24753, a kidney-shaped positioning hole 24755 is arranged on the bottom surface of the second positioning block 2475, and a through hole 24756 communicated with the positioning hole 24755 is arranged on the front surface of the second positioning block 2475. The middle part of the side surface of the propping block 2477 facing the gear set 2471 is provided with a supporting rod 24771, and the back surface of the supporting rod 24771 is coplanar with the back surface of the propping block 2477; the opposite ends of the propping block 2477 are respectively provided with a first sleeve 24773, and each first sleeve 24773 faces one end face of the gear set 2471 and is provided with a circle of first positioning teeth 24775 along the circumferential direction of the sleeve. In this embodiment, the elastic member 2478 is a spring sleeved on the end of the rotating shaft 2470 away from the gear set 2471. Waist-shaped clamping holes are formed in the middle of each gasket 2479.

Referring to fig. 5 and 8-9, the link member 270 includes a rotating block 271 rotatably connected to the connecting mechanism 24, a sliding plate 273 connected to the rotating block 271 and away from the connecting mechanism 24, and a pushing rod 274 connected to the rotating block 271 and away from the connecting mechanism 24. The slide plate 273 is spaced parallel to the push rod 274, and the turning block 271 is connected to the slide plate 273 and the push rod 274 by inclined plates. The end of the rotating block 271 far away from the sliding plate 273 is provided with a second sleeve 276, the second sleeve 276 is axially provided with a kidney-shaped shaft hole 2761, and the end surface of the second sleeve 276 far away from the sliding plate 273 is circumferentially provided with a circle of second positioning teeth 2763. The end of the pushing rod 274 away from the rotating block 271 is provided with a connecting hole 2742 in a direction parallel to the shaft hole 2761, and the connecting hole 2742 of the pushing rod 274 is used for inserting a sliding shaft 277.

The supporting member 275 includes a supporting plate 2751, a rotating portion 2752 disposed on a side of the supporting plate 2751 away from the connecting mechanism 24, and a sliding portion 2756 disposed on a back surface of the supporting plate 2751, wherein the rotating portion 2756 is rotatably connected to the rotating mechanism 26, and the sliding portion 2756 is slidably connected to the link member 270. In this embodiment, the support plate 2751 is a rectangular plate, and the rotating portion 2752 and the sliding portion 2756 are disposed at opposite end portions of the back surface of the support plate 2751. The rotating part 2752 is in matched rotation connection with the rotating mechanism 26 through an arc groove and an arc rail; in this embodiment, the rotating portion 2752 protrudes from the back surface of the supporting plate 2751 to the side edge of the supporting plate 2751 away from the connecting assembly 242, and two opposite side surfaces of the rotating portion 2752 are respectively provided with an arc-shaped slot 2753. The sliding part 2756 is connected with the connecting rod piece 270 in a matched manner through a sliding groove and a sliding shaft; in this embodiment, the sliding portion 2756 includes a connecting plate 2757 protruding from the supporting plate 2751, the connecting plate 2757 is provided with a sliding groove 2758, the sliding groove 2758 extends along the width direction of the supporting plate 2751, and the sliding shaft 277 of the connecting rod member 270 is slidably and rotatably inserted into the sliding groove 2758; preferably, the sliding groove 2758 is an arc-shaped groove provided along a sliding track of the sliding shaft 277.

The rotating mechanism 26 comprises a fixed bracket 261 and a rotating arm 265 rotatably connected to the fixed bracket 261, wherein one end of the rotating arm 265 away from the fixed bracket 261 is rotatably connected to the connecting mechanism 24, and a rotating part 2752 of the supporting piece 275 is rotatably connected to the fixed bracket 261; further, the rotating portion 2752 is rotatably connected with the fixed support 261 through the arc-shaped groove and the arc-shaped rail, and the rotating arm 265 is rotatably connected with the connecting mechanism 24 through the arc-shaped groove and the arc-shaped rail. In this embodiment, the fixed bracket 261 includes a fixed block 2610, one end of the front surface of the fixed block 2610 is provided with a first accommodating groove 2611 and a second accommodating groove 2612 communicated with the first accommodating groove 2611, and the first accommodating groove 2611 is closer to the connecting mechanism 24 than the second accommodating groove 2612; the depth value of the first receiving groove 2611 extending along the thickness direction of the fixed block 2610 is greater than the depth value of the second receiving groove 2612 extending along the thickness direction of the fixed block 2610, i.e., the bottom surface of the first receiving groove 2611 is closer to the back surface of the fixed block 2610 than the bottom surface of the second receiving groove 2612, and the first receiving groove 2611 and the second receiving groove 2612 enclose a stepped space. Opposite shaft holes 2613 are formed in the opposite side walls of the fixed block 2610 in the first accommodating groove 2611; the fixing block 2610 is provided with a pair of opposite arc-shaped rails 2614 at opposite side walls of the second accommodating groove 2612, and the middle part of each arc-shaped rail 2614 is bent towards the bottom surface of the second accommodating groove 2612. The fixed bracket 261 is provided with a first guide groove 2616, and the sliding plate 273 of the link member 270 is slidably inserted into the first guide groove 2616, specifically, the first guide groove 2616 is provided at an end of the fixed block 2610 away from the first accommodation groove 2611, and the first guide groove 2616 extends in a direction perpendicular to a rotational axis between the link member 270 and the connection mechanism 24, that is, the first guide groove 2616 extends in a direction perpendicular to an axial axis of the shaft hole 2613. The fixing block 2610 is provided with a plurality of connection holes 2617, and a back surface of the fixing block 2610 is provided with a clamping hole.

The rotating arm 265 includes an arm plate 2651, a connecting cylinder 2652 disposed at one end of the arm plate 2651, and two extension rods 2654 disposed at the opposite end of the arm plate 2651 at intervals, wherein the connecting cylinder 2652 is provided with a shaft hole 2655 along the axial direction. The end of each extension bar 2654 remote from the connecting barrel 2652 is provided with a rotating portion 2656, and opposite sides of the rotating portions 2656 are provided with an opposite pair of arcuate rails 2657. A rotating shaft 2658 is inserted into the shaft hole 2655 of the connecting tube 2652.

Referring to fig. 6 to 13 together, when assembling the folding device 23, the rotating arm 265 is rotatably connected to the fixed bracket 261, specifically, the connecting tube 2652 of the rotating arm 265 is accommodated in the first accommodating groove 2611 of the fixed bracket 261, so that the shaft hole 2655 of the connecting tube 2652 is opposite to the shaft hole 2613, and the rotating shaft 2658 is inserted into the shaft hole 2613 of the fixed bracket 261 and the shaft hole 2655 of the connecting tube 2652; the support 275 is rotatably connected to the fixed bracket 261, specifically, the rotating portion 2752 of the support 275 is accommodated in the second accommodating groove 2612, so that the pair of arc-shaped rails 2614 are respectively rotatably accommodated in the arc-shaped grooves 2753 of the rotating portion 2752; the link member 270 is mounted to the fixed bracket 261, specifically, the sliding plate 273 of the link member 270 is slidably inserted into the first guide groove 2616 of the fixed bracket 261 such that the sliding portion 2756 of the supporting member 275 is accommodated between the supporting member 275 of the link member 270 and the sliding plate 273, and the sliding shaft 277 is inserted into the sliding groove 2758 and the connecting hole 2742. At this time, the rotating portion 2752 of the supporting member 275 is rotatably connected with the arc-shaped groove 2753 through the arc-shaped rail 2614, and the rotation shaft between the rotating portion 2752 and the fixed bracket 261 is a virtual shaft; the rotating arm 265 and the fixed bracket 261 are rotationally connected through the rotating shaft 2658, the rotating shaft between the rotating arm 265 and the fixed bracket 261 is a real shaft, the rotating shaft axis between the supporting piece 275 and the fixed bracket 261 is parallel to the rotating shaft axis between the rotating arm 265 and the fixed bracket 261, and the rotating shaft axis between the rotating part 2752 of the supporting piece 275 and the fixed bracket 261 is farther away from the connecting mechanism 24 than the rotating shaft axis between the rotating arm 265 and the fixed bracket 261. The push rod 274 of the link member 270 is connected with the connecting plate 2757 of the supporting member 275 through the cooperation of the sliding shaft 277 and the sliding groove 2758, i.e. the sliding shaft 277 can slide and rotate in the sliding groove 2758.

The rotating mechanism 26 and the supporting mechanism 27 are respectively arranged on two opposite sides of each connecting component 242, that is, the rotating mechanism 26 and the supporting mechanism 27 on two opposite sides of the connecting component 242 are symmetrically arranged along the connecting component 242, and the installation method of each rotating mechanism 26 and each supporting mechanism 27 and the connecting component 242 is the same. Only the mounting of the rotation mechanism 26 and the support mechanism 27 to the connection assembly 242 on one side of the connection assembly 242 is described below: the rotating mechanism 26 and the supporting mechanism 27 assembled together are mounted to the connecting mechanism 24, specifically, the ends of the two rotating shafts 2470 far from the gear set 2471 are respectively inserted into the two shaft holes 24732 of the first positioning block 2473, so that the ends of the rotating shafts of the two second gears 24713 are respectively rotatably inserted into the connecting holes 24733 of the first positioning block 2473; the ends of the two first gears 24711 and the two second gears 24713 facing away from the first positioning block 2473 are rotatably inserted into the two connecting grooves 2466 and the two connecting holes 2467 of the second connecting block 246, respectively; the second sleeve 276 of the link member 270 is sleeved on the rotating shaft 2470, and the rotating arm 265 is positioned on one side of the second connecting block 246 facing away from the gear set 2471; the first connecting block 245 is mounted on the second connecting block 246, specifically, the clamping blocks 2455 of the first connecting block 245 are clamped into the clamping holes 2465 of the second connecting block 246, the two rotating parts 2656 of the rotating arm 265 clamp the first connecting block 245 to enable the arc-shaped rail 2657 to be rotatably accommodated in the corresponding arc-shaped groove 2452 of the first connecting block 245, and the peripheral walls of the two rotating parts 2656 are respectively and rotatably attached to the guide sliding surface 2457 of the first connecting block 245 and the guide sliding surface 2464 of the second connecting block 246; the two first sleeves 24773 of the propping block 2477 are respectively sleeved on the two rotating shafts 2470, so that the first positioning teeth 24775 of the first sleeve 24773 are matched with the second positioning teeth 2763 of the second sleeve 276; the two elastic members 2478 are respectively sleeved on the two rotating shafts 2470, the two rotating shafts 2470 are respectively inserted into the through holes 24753 of the two lugs 24751 of the second positioning block 2475, and then the two gaskets 2479 are respectively clamped at the end parts of the two rotating shafts 2470 and are clamped and fixed at the end parts of the rotating shafts 2470 through the clamping pieces.

At this time, the arc rail 2657 of the rotating arm 265 is rotatably accommodated in the arc slot 2452 corresponding to the first connecting block 245, that is, the rotating shaft between the rotating arm 265 and the connecting assembly 242 is an imaginary shaft; the second sleeve 276 of the link member 270 rotates with the corresponding rotational shaft 2470, i.e., the rotational shaft between the link member 270 and the link assembly 242 is a solid shaft, and the rotational axis between the rotational arm 265 and the link assembly 242 is parallel to and spaced apart from the rotational axis between the link member 270 and the link assembly 242; and the axis of rotation between the pivot arm 265 and the link assembly 242 is closer to the middle of the link assembly 242 than the axis of rotation between the link member 270 and the link assembly 242. The support rod 24731 of the first positioning block 2473 is overlapped with the support rod 24771 of the supporting block 2477 by the support plate 2462, and the support plate 2462 of the first positioning block 2473 is overlapped with the support rod 24731 of the first positioning block 2473, so that the front surfaces of the connecting assemblies 242 are located on the same plane. The two elastic members 2478 elastically abut against the abutting block 2477 and the second positioning block 2475, and the elastic members 2478 elastically abut against the first positioning teeth 24775 of the first sleeve 24773 to engage with the second positioning teeth 2763 of the corresponding second sleeve 276, so as to position the link member 270 to rotate relative to the connecting assembly 242.

Then, the connecting assembly 242 is mounted to the connecting frame 241, specifically, the connecting assembly 242 is placed in the accommodating space 2410 of the connecting frame 241, so that the first positioning post 2412, the clamping post 2414 and the second positioning post 2415 in the accommodating space 2410 are respectively clamped into the corresponding connecting hole 2454, the clamping holes 2458, 2468 and the positioning hole 24755 of the connecting assembly 242, and the locking member, such as a screw, is respectively inserted into the connecting hole 2454 and the through hole 24756 to be locked in the corresponding positioning holes 2413, 2416. At this time, the rotational axis between the rotational portion 2752 and the rotational mechanism 26, the rotational axis between the rotational mechanism 26 and the connection mechanism 24, and the rotational axis between the link member 270 and the connection mechanism 24 are spaced in parallel; specifically, the rotational axis between the rotating portion 2752 and the fixed bracket 261, the rotational axis between the rotating arm 265 and the connecting member 242, and the rotational axis between the link member 270 and the connecting member 242 are spaced in parallel. In this embodiment, the axis of rotation between the rotating portion 2752 and the rotating mechanism 26 is farther from the middle of the connecting mechanism 26 than the axis of rotation between the link member 270 and the connecting mechanism 26, and the axis of rotation between the link member 270 and the connecting mechanism 26 is farther from the middle of the connecting mechanism 24 than the axis of rotation between the rotating mechanism 26 and the connecting mechanism 24.

As shown in fig. 14 and 15, when the folding device 23 is folded, a folding force is applied to one of the fixed brackets 261, so that the one fixed bracket 261 rotates toward the other fixed bracket 261, the sliding plate 273 of the connecting rod member 270 slides along the first guide groove 2616, the one fixed bracket 261 drives the corresponding connecting rod member 270 to rotate relative to the connecting assembly 242, the second positioning teeth 2763 of the second sleeve 276 rotate relative to the corresponding first positioning teeth 24775 to push the first sleeve 24773 to move toward the end far from the gear set 2471, the engagement between the first positioning teeth 24775 and the second positioning teeth 2763 is released, the elastic member 2478 is elastically deformed, the connecting rod member 270 drives one of the rotating shafts 2470 connected with the elastic member 2478 to rotate, and simultaneously, the rotation of the one fixed bracket 261 also drives the connecting cylinder 2652 and the rotating portion 2656 of the rotating arm 265 to rotate relative to the fixed bracket 261 and the first connecting block 245, and drives the rotating portion 2752 of the supporting member 275 to rotate relative to the fixed bracket 261; because the linkage assembly 247 is disposed in the connecting component 242, the rotation of the rotating shaft 2470 drives the other rotating shaft 2470 to rotate through the gear set 2471, and the rotation of the other rotating shaft 2470 drives the other connecting rod member 270 connected with the other rotating shaft to rotate, so that the sliding plate 273 of the other connecting rod member 270 slides in the first guide slot 2616 of the corresponding fixed bracket 261 to drive the fixed bracket 261 to rotate relative to the connecting component 242 through the corresponding rotating arm 265, so that the two fixed brackets 261 synchronously draw together with each other, and the two supporting members 275 synchronously draw together with each other; to realize the linkage folding of the two supporting pieces 275, the elastic piece 2478 elastically resets to push the pushing block 2477 to move towards the pushing rod 274, so that the first positioning teeth 24775 are clamped into the corresponding second positioning teeth 2763 to position the folding device 23 to keep the folded state. Because the axis of rotation between the support 275 and the fixed bracket 261, the axis of rotation between the rotating arm 265 and the connecting component 242, and the axis of rotation between the connecting rod 270 and the connecting component 242 are parallel, and the sliding shaft 277 of the push rod 274 slides and rotationally inserts in the chute 2758 of the support 275, the radian value of the support 275 rotating relative to the connecting component 242 is greater than the radian value of the corresponding rotating arm 265 rotating relative to the connecting component 242, so that a water drop-shaped accommodating space 28 is enclosed between the two support 275 and the connecting component 242, and the accommodating space 28 is used for accommodating the bending part 301 formed after the bending of the bendable region 31 of the flexible component 30. The size of the cavity of the accommodating space 28 gradually decreases from the side adjacent to the connecting mechanism 24 to the side far away from the connecting mechanism 24, i.e. the distance between the two supporting pieces 275 on the opposite sides of the accommodating space gradually decreases from the side adjacent to the connecting mechanism 24 to the side far away from the connecting mechanism 24. During rotation of the link member 270 relative to the connection assembly 242, the second positioning teeth 2763 rotate relative to the first positioning teeth 24775; when the folding force is released from pulling the fixed bracket 261, the elastic member 2478 elastically returns to push the pushing block 2477 to move toward the second sleeve 276 of the rotating block 271, so that the first positioning teeth 24775 of the pushing block 2477 are engaged with the second positioning teeth 2763 of the second sleeve 276 to position the folding device 23 to be folded at any position.

In other embodiments of the folding device 23, folding forces can be simultaneously pulled on two fixed brackets 261 on two opposite sides of the connecting assembly 242 to enable the two fixed brackets 261 to draw close to each other and rotate, the sliding plate 273 of each connecting rod 270 slides along the corresponding first guide slot 2616, each fixed bracket 261 drives the corresponding connecting rod 270 to rotate relative to the connecting assembly 242, the second positioning tooth 2763 of each second sleeve 276 rotates relative to the corresponding first positioning tooth 24775 to push the first sleeve 24773 to move towards one end far away from the gear set 2471, the engagement of the first positioning tooth 24775 and the second positioning tooth 2763 is released, the elastic member 2478 is elastically deformed, each connecting rod 270 drives the corresponding rotating shaft 2470 to rotate, and simultaneously, the rotation of each fixed bracket 261 also drives the connecting cylinder 2652 and the rotating part 2656 of the corresponding rotating arm 265 to rotate relative to the fixed bracket 261 and the first connecting block 245, and drives the rotating part 2752 of the supporting member 275 to rotate relative to the fixed bracket 261; so that the two fixed brackets 261 are synchronously moved close to each other, and the two supporting pieces 275 are synchronously moved close to each other, thereby realizing the linkage folding of the two supporting pieces 275; when the folding is completed, the folding force is released from dragging the fixed bracket 261, and the elastic piece 2478 elastically resets to push the pushing block 2477 to move towards the pushing rod 274, so that the first positioning teeth 24775 are clamped into the corresponding second positioning teeth 2763 to position the folding device 23 to keep the folded state. Because the axis of rotation between each support 275 and the corresponding fixed bracket 261, the axis of rotation between each rotating arm 265 and the connecting assembly 242, and the axis of rotation between each link member 270 and the connecting assembly 242 are spaced parallel, and the sliding shaft 277 of each push-supporting rod 274 is slidingly and rotationally inserted into the sliding groove 2758 of the corresponding support 275, the radian value of each support 275 rotating relative to the connecting assembly 242 is greater than the radian value of the corresponding rotating arm 265 rotating relative to the connecting assembly 242, so that a water drop-shaped accommodating space 28 is enclosed between the two supports 275 and the connecting assembly 242, and the accommodating space 28 is used for accommodating the bending part 301 of the flexible member 30.

When the folding device 23 is flattened, a flattening force is pulled to one of the fixed brackets 261, so that one of the fixed brackets 261 rotates away from the other fixed bracket 261, the sliding plate 273 of the connecting rod member 270 slides along the first guide groove 2616, the one of the fixed brackets 261 drives the corresponding connecting rod member 270 to rotate away from the other connecting rod member 270 relative to the connecting assembly 242 so as to drive the corresponding one of the rotating shafts 2470 to rotate, the second positioning teeth 2763 of the second sleeve 276 rotate relative to the corresponding first positioning teeth 24775 to push the first sleeve 24773 to move away from one end of the gear set 2471, the engagement between the first positioning teeth 24775 and the second positioning teeth 2763 is released, and the elastic member 2478 is elastically deformed; meanwhile, the rotation of one of the fixed brackets 261 also drives the connecting cylinder 2652 and the rotating part 2656 of the rotating arm 265 to rotate relative to the fixed bracket 261 and the first connecting block 245, and drives the rotating part 2752 of the supporting member 275 to rotate relative to the fixed bracket 261; since the linkage assembly 247 is disposed in the connecting assembly 242, the rotation of the rotating shaft 2470 drives the other rotating shaft 2470 to rotate through the gear set 2471, and the rotation of the other rotating shaft 2470 drives the other connecting rod member 270 connected with the other rotating shaft 2470 to rotate, so that the sliding plate 273 of the other connecting rod member 270 slides in the first guide groove 2616 of the corresponding fixed bracket 261 to drive the fixed bracket 261 to rotate relative to the connecting assembly 242 through the corresponding rotating arm 265, so that the two fixed brackets 261 are synchronously separated from each other, the two rotating arms 265 are synchronously separated from each other, and the two supporting members 275 are synchronously separated from each other, so as to realize linkage flattening of the two supporting members 275. After the folding device 23 is flattened, the flattening force dragged and added to the fixed support 261 is released, and the elastic piece 2478 elastically resets to push the pushing block 2477 to move towards the pushing rod 274, so that the first positioning teeth 24775 are clamped into the corresponding second positioning teeth 2763 to position the folding device 23 to keep the flattened state.

In other embodiments of the flattening and folding device 23, the flattening force can be simultaneously pulled and applied to the two fixed brackets 261 on two opposite sides of the connecting component 242, so that the two fixed brackets 261 are mutually closed and rotated, the sliding plate 273 of each connecting rod member 270 slides along the corresponding first guide groove 2616, each fixed bracket 261 drives the corresponding connecting rod member 270 to rotate relative to the connecting component 242 towards the position away from the other fixed bracket 261, so as to drive the corresponding rotating shaft 2470 to rotate, the second positioning teeth 2763 of the second sleeve 276 rotate relative to the corresponding first positioning teeth 24775 to push the first sleeve 24773 to move towards the end away from the gear set 2471, the engagement between the first positioning teeth 24775 and the second positioning teeth 2763 is released, and the elastic member 2478 is elastically deformed. Meanwhile, the rotation of each fixed bracket 261 also drives the connecting cylinder 2652 and the rotating part 2656 of the corresponding rotating arm 265 to rotate relative to the fixed bracket 261 and the first connecting block 245 respectively, and drives the rotating part 2752 of the supporting piece 275 to rotate relative to the fixed bracket 261; so that the two fixed brackets 261 are flattened simultaneously and the two supporting members 275 are flattened simultaneously. After the folding device 23 is flattened, the flattening force dragged and added to the fixed support 261 is released, and the elastic piece 2478 elastically resets to push the pushing block 2477 to move towards the pushing rod 274, so that the first positioning teeth 24775 are clamped into the corresponding second positioning teeth 2763 to position the folding device 23 to keep the flattened state.

Referring to fig. 4-5 and fig. 16-17, when assembling the folding housing 20, two frames 22 are placed side by side, that is, the sides of the two frames 22 provided with the first receiving grooves 221 correspond to each other, so that the first receiving grooves 221 and the second receiving grooves 223 of the two frames 22 enclose a mounting space, then the assembled folding device 23 is placed in the mounting space, so that the connecting hole 2617 of each fixing bracket 261 is opposite to the corresponding locking hole 225, the positioning post 226 is clamped into the clamping hole on the back of the corresponding fixing bracket 261, and a plurality of locking pieces respectively pass through the connecting hole 2617 of the fixing bracket 261 and are locked in the corresponding locking hole 225, so that the folding device 23 is mounted between the two frames 22. At this time, the connection frame 241 of the folding device 23 is accommodated in the installation space enclosed by the first accommodating groove 221 and the second accommodating groove of the two frames 22, and the front surface of the folding device 23 is coplanar with the front surfaces of the two frames 22, that is, the front surfaces of the supporting members 275 are coplanar with the front surfaces of the two frames 22, so as to facilitate the installation of the flexible members 30. When the mobile terminal 100 is assembled, the back surface of the non-bending region 33 at one end of the flexible screen 30 is fixed to the front surface 220 of one of the housings 22, the back surface of the non-bending region 33 at the opposite end of the flexible screen 30 is fixed to the front surface 220 of the other housing 22, and the back surface of the bendable region 31 of the flexible screen 30 is bonded to the front surface of the folding device 23.

As shown in fig. 17 to 21, when the mobile terminal 100 is folded, a folding force is applied to one of the frames 22 of the mobile terminal 100, so that the one of the frames 22 rotates toward the other frame 22, the fixed bracket 261 rotates with the one of the frames 22, the rotation of the fixed bracket 261 drives the link member 270 connected to the fixed bracket 261 to rotate relative to the connection assembly 242, and the link member 270 drives the rotation shaft 2740 connected thereto to rotate; meanwhile, the rotation of one of the fixed brackets 261 also drives the connecting cylinder 2652 and the rotating part 2656 of the rotating arm 265 to rotate relative to the fixed bracket 261 and the first connecting block 245, and drives the rotating part 2752 of the supporting member 275 to rotate relative to the fixed bracket 261; because the linkage assembly 247 is disposed in the connecting component 242, the rotation of the rotating shaft 2470 drives the other rotating shaft 2470 to rotate through the gear set 2471, and the rotation of the other rotating shaft 2470 drives the other connecting rod member 270 connected with the other rotating shaft to rotate, so that the sliding plate 273 of the other connecting rod member 270 slides in the first guide slot 2616 of the corresponding fixed bracket 261 to drive the fixed bracket 261 to rotate relative to the connecting component 242 through the corresponding rotating arm 265, so that the two fixed brackets 261 synchronously draw together with each other, and the two supporting members 275 synchronously draw together with each other; to realize the linkage folding of the folding machine shell 20, the bendable region 31 of the flexible piece 30 is bent along with the folding device 23. The folding force to the frame 22 is released, the elastic member 2478 elastically returns to push the pushing block 2477 to move toward the pushing rod 274, so that the first positioning teeth 24775 are engaged with the corresponding second positioning teeth 2763 to position the folding device 23 to maintain the folded state. Since the radian value of the support 275 rotating relative to the connecting assembly 242 is greater than the radian value of the corresponding rotating arm 265 rotating relative to the connecting assembly 242, a water droplet-shaped accommodating space 28 is enclosed between the two support 275 and the connecting assembly 242, and the accommodating space 28 is used for accommodating the bending portion 301 of the flexible member 30. Specifically, the two supporting members 275 on opposite sides of the connection assembly 242 are spaced apart from each other, i.e., the supporting plates 2751 of the two supporting members 275 are spaced apart from each other, and the spacing between the two supporting plates 2751 gradually decreases from one end adjacent to the connection assembly 242 to one end distant from the connection assembly 242. In the folding process of the folding device 23, the bendable region 31 of the flexible member 30 is bent along with the folding device 23 to form a bending portion 301 accommodated in the accommodating space 27, the cross section of the bending portion 301 is in a droplet shape, and the front surfaces of the two non-bending regions 33 of the flexible member 30 are attached to each other, so that the overall thickness of the mobile terminal 100 in the folded state is reduced.

In other bending modes of the mobile terminal 100, bending forces can be applied to the two frames 22 at the same time, so that the two frames 22 are close to each other to drive the corresponding link members 270 to rotate and the rotating arms 265 to rotate and the corresponding link members 270 to move close to each other, the rotation of the frames 22, the link members 270 and the rotating arms 265 drive the two supporting members 275 to rotate, so as to realize the folding of the folding device 23, and the flexible members 30 are folded along with the folding device 23 so as to realize the bending of the mobile terminal 100.

When the mobile terminal 100 needs to be flattened, one of the frames 22 is pulled outwards, so that the one of the frames 22 rotates far away from the other frame 22, the fixed support 261 fixedly connected to the one of the frames 22 rotates along with the frame 22, the rotation of the fixed support 261 drives the sliding plate 273 of the link member 270 to slide along the first guide groove 2616, the link member 270 rotates far away from the other link member 270 relative to the connecting assembly 242, and the link member 270 drives one of the rotating shafts 2740 connected with the link member 270 to rotate; meanwhile, the rotation of one of the fixed brackets 261 also drives the connecting cylinder 2652 and the rotating portion 2656 of the rotating arm 265 to rotate relative to the fixed bracket 261 and the first connecting block 245, and drives the rotating portion 2752 of the supporting member 275 to rotate relative to the fixed bracket 261. Because the linkage assembly 247 is disposed in the connecting component 242, the rotation of the rotating shaft 2470 drives the other rotating shaft 2470 to rotate through the gear set 2471, and the rotation of the other rotating shaft 2470 drives the other connecting rod member 270 connected with the other rotating shaft to rotate, so that the sliding plate 273 of the other connecting rod member 270 slides in the first guide slot 2616 of the corresponding fixed bracket 261 to drive the fixed bracket 261 to rotate relative to the connecting component 242 through the corresponding rotating arm 265, so that the two fixed brackets 261 are synchronously unfolded with each other, and the two supporting members 275 are synchronously unfolded with each other; to realize the linkage flattening of the folding casing 20, the elastic piece 2478 elastically resets to push the pushing block 2477 to move towards the pushing rod 274, so that the first positioning teeth 24775 are clamped into the corresponding second positioning teeth 2763 to position the folding device 23 to keep the flattened state. During the flattening of the folding device 23, the bendable region 31 of the flexible member 30 flattens with the folding device 23.

In other flattening modes of the mobile terminal 100, flattening forces can be applied to the two frames 22 at the same time, so that the two frames 22 are far away from each other to drive the corresponding link members 270 to rotate and far away from each other, the rotating arms 265 rotate and far away from each other, the rotation of the frames 22, the link members 270 and the rotating arms 265 drive the two supporting members 275 to rotate, so as to flatten the folding device 23, and the flexible member 30 is flattened along with the folding device 23 to flatten the mobile terminal 100.

In other embodiments, the side of the rotating portion 2656 of the rotating arm 265 facing the first connecting block 245 is provided with an arc-shaped groove, and the arc-shaped groove of the first connecting block 245 facing the rotating portion 2656 is provided with an arc-shaped rail slidably received in the arc-shaped groove.

In other embodiments, the fixed bracket 261 is provided with an arc-shaped groove at two opposite side walls of the second accommodating groove 2612, and two opposite sides of the rotating portion 2752 of the supporting member 275 are provided with arc-shaped rails corresponding to the arc-shaped groove, and the arc-shaped rails are slidably accommodated in the arc-shaped groove.

Referring to fig. 22 to 27, a folding device 23a according to a second embodiment of the present invention is similar to the folding device 23 according to the first embodiment, except that: the structure of the link member 270a and the corresponding fixed bracket 261a of the folding device 23a in the second embodiment are slightly different from those of the link member 270 and the fixed bracket 261 in the first embodiment; specifically:

The link member 270a of the second embodiment omits the supporting member 275 on the basis of the link member 270 of the first embodiment, and integrates the function performed by the supporting member 275 of the first embodiment onto the slide 273a. Specifically, the link member 270a includes a rotation block 271 rotatably connected to the connection mechanism 24, an extension plate 278 extending obliquely from one side of the rotation block 271, and a slide plate 273a extending horizontally from an end of the extension plate 278 remote from the rotation block 271, the end of the rotation block 271 remote from the slide plate 273 being provided with a second sleeve 276, the second sleeve 276 being axially provided with a kidney-shaped shaft hole 2761, an end surface of the second sleeve 276 facing away from the slide plate 273 being provided with second positioning teeth 2763 in the circumferential direction. The end of the sliding plate 273a far away from the rotating block 271 is provided with a second guide groove 279, the end of the sliding plate 273a far away from the rotating block 271 is convexly provided with a pair of protruding blocks 2790 at two opposite sides of the second guide groove 279, the pair of protruding blocks 2790 are provided with connecting holes 2791 along the axial direction parallel to the shaft hole 2761, and a sliding shaft 277a is inserted into the connecting holes 2791 of the sliding plate 273a.

The fixed bracket 261a in the second embodiment is different from the fixed bracket 261 in the first embodiment in that a first guide groove 2616 formed in the fixed bracket 261a partially penetrates through the front surface of the fixed block 2610, and a clearance groove 2618 penetrating through the back surface of the fixed bracket 261a is formed in the fixed bracket 261a at one side of the bottom surface of the first guide groove 2616 away from the connection mechanism 24; specifically, a side of the first guide groove 2616 adjacent to the connection mechanism 24 penetrates the front surface of the fixed block 2610, and the escape groove 2618 is located at a side away from the connection mechanism 24 and penetrates the rear surface of the fixed block 2610, so that the first guide groove 2616 has a sufficient space to accommodate the slide plate 273a.

The assembly method of the support 275, the link 270a, the fixed bracket 261a and the rotating arm 265 in the second embodiment is slightly different from that in the first embodiment, specifically, the connecting tube 2652 of the rotating arm 265 is accommodated in the first accommodating groove 2611 of the fixed bracket 261, and the rotating shaft 2658 is inserted into the shaft hole 2613 of the fixed bracket 261 and the shaft hole 2655 of the connecting tube 2652; the rotating portion 2752 of the supporting member 275 is accommodated in the second accommodating groove 2612, so that the pair of arc-shaped rails 2614 are respectively rotatably accommodated in the arc-shaped grooves 2753 of the rotating portion 2752; the connecting plate 2757 of the connecting rod 270a is inserted into the second guide groove 279 of the connecting rod 270a, the sliding shaft 277a is inserted into the connecting hole 2791 and the sliding groove 2758 of the supporting member 275, and the sliding plate 273a of the connecting rod 270a is inserted into the first guide groove 2616 of the fixed bracket 261a together with the connecting plate 2757. At this time, the opposite sides of the sliding plate 273a are slidably received in the first guide groove 2616, the pair of protrusions 2790 are received in the front space of the first guide groove 2616, the connecting plate 2757 is received in the avoidance groove 2618, and the sliding plate 273a is slidably and rotatably connected to the sliding portion 2756 of the supporting member 275, specifically, the sliding shaft 277a is slidably and rotatably inserted into the sliding groove 2758.

The folding method and the flattening method of the folding device in the second embodiment are the same as those of the first embodiment, and are not described here again.

The link member 270a of the second embodiment omits the supporting member 275 with respect to the first embodiment, so that the volume of the link member 270a is significantly reduced, thereby reducing the space occupied by the link member 270a in the interior of the frame 22, and facilitating the layout of other elements.

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. The folding device is characterized by comprising a connecting mechanism, two rotating mechanisms and a supporting mechanism, wherein the two rotating mechanisms are rotationally connected to two opposite sides of the connecting mechanism, the rotating mechanisms comprise a fixed support and rotating arms rotationally connected to the fixed support, the fixed support is provided with a first guide groove, one end of each rotating arm far away from the fixed support is rotationally connected to the connecting mechanism, the supporting mechanism comprises a connecting rod piece and a supporting piece, the connecting rod piece comprises a rotating block rotationally connected to the connecting mechanism and a sliding plate connected to the rotating block far away from the connecting mechanism, the supporting piece comprises a supporting plate, a rotating part arranged on one side, far away from the connecting mechanism, of the supporting plate, and a sliding part arranged on the supporting plate, the sliding plate is slidingly inserted into the first guide groove, and is slidingly and rotationally connected to the sliding part of the supporting piece, and the sliding part is rotationally connected with the fixed support through the arc-shaped groove and the arc-shaped rail in a matched and rotating way;

The rotating mechanism rotates relative to the connecting mechanism so as to drive the connecting rod piece to slide relative to the rotating mechanism and rotate relative to the connecting mechanism, and the rotating mechanism and the connecting rod piece drive the two supporting pieces to be flattened or folded relatively.

2. The folding device according to claim 1, wherein the sliding portion is provided with a sliding groove, and one end of the sliding plate away from the rotating block is provided with a sliding shaft, and the sliding shaft is slidingly and rotatably connected in the sliding groove.

3. The folding device according to claim 2, wherein a second guide groove is provided at an end of the slide plate remote from the rotating block, and the sliding portion is slidably received in the second guide groove.

4. The folding device according to claim 3, wherein a pair of protruding blocks are provided on opposite sides of the second guide groove at the end of the sliding plate away from the rotating block, the pair of protruding blocks are provided with a connecting hole along a direction parallel to a rotation axis of the rotating block and the connecting mechanism, and the sliding shaft is inserted into the connecting hole.

5. The folding apparatus according to claim 1, wherein the link member further comprises an extension plate extending obliquely from one side of the rotating block to the slide plate.

6. The folding device according to claim 1, wherein the fixing bracket is provided with a clearance groove at a side of the bottom surface of the first guide groove away from the connecting mechanism, the fixing bracket comprises a fixing block, one side of the first guide groove adjacent to the connecting mechanism penetrates through the front surface of the fixing block, and the clearance groove is positioned at a side of the bottom surface of the first guide groove away from the connecting mechanism and penetrates through the back surface of the fixing block.

7. The folding device of claim 1, wherein when the two support members are relatively flattened, the front faces of the two support plates are coplanar; when the two supporting pieces are folded relatively, the front surfaces of the two supporting plates and the connecting mechanism enclose a containing space.

8. The folding device of claim 1, wherein a rotational axis between the rotating portion and the fixed bracket is farther from the connection mechanism than a rotational axis between the rotating arm and the fixed bracket.

9. The folding device according to claim 1, wherein the rotation axis between the rotation portion and the fixing bracket is an imaginary axis, the rotation axis between the rotation arm and the connection mechanism is an imaginary axis, and the rotation arm and the connection mechanism are connected by the cooperation rotation of the arc-shaped groove and the arc-shaped rail.

10. The folding device according to claim 1, wherein a rotational axis between the rotating portion and the fixed bracket, a rotational axis between the rotating arm and the connecting mechanism, and a rotational axis between the rotating block and the connecting mechanism are spaced in parallel.

11. The folding device according to claim 1, wherein a rotational axis between the rotating portion and the fixed bracket is farther from a middle portion of the connecting mechanism than a rotational axis between the rotating block and the connecting mechanism, and a rotational axis between the rotating block and the connecting mechanism is farther from the middle portion of the connecting mechanism than a rotational axis between the rotating arm and the connecting mechanism.

12. The folding apparatus of claim 1, wherein the first guide groove extends in a direction perpendicular to a rotational axis between the link member and the connection mechanism.

13. The folding device according to claim 1, wherein the connecting mechanism comprises a linkage assembly, and two supporting mechanisms are respectively disposed on two opposite sides of the linkage assembly, wherein one supporting mechanism rotates relative to the connecting mechanism to drive the other supporting mechanism to rotate together relative to the connecting mechanism.

14. The folding device according to claim 13, wherein the linkage assembly comprises two parallel rotating shafts, gear sets arranged at one ends of the two rotating shafts, a propping block and an elastic piece, first sleeves are respectively arranged at two opposite ends of the propping block, each first sleeve faces one end face of the gear set and is provided with a circle of first positioning teeth along the circumferential direction of the sleeve, the two first sleeves of the propping block are respectively sleeved on the two rotating shafts, one end, far away from the sliding plate, of the rotating block is provided with a second sleeve, a second positioning tooth is arranged at the end face, far away from the sliding plate, of the second sleeve and is circumferentially provided with a second positioning tooth, the two second sleeves are respectively sleeved on the two rotating shafts, and the elastic piece elastically props against the first positioning teeth of the first sleeve to be meshed with the second positioning teeth of the corresponding second sleeve.

15. A folding casing for supporting a flexible member, wherein the folding casing comprises two opposite frames and a folding device as claimed in any one of claims 1 to 14, the folding device is disposed between the two frames, a connecting mechanism of the folding device is disposed in the middle between the two frames, each rotating mechanism is rotationally connected between the connecting mechanism and the corresponding frame, and the two frames are folded or flattened relatively to drive the two supporting members to fold or flatten relatively through the corresponding connecting rod members, so as to achieve bending or flattening of the flexible member.

16. A mobile terminal comprising the folding chassis of claim 15 and a flexible member covering the front face of the folding chassis, the flexible member being capable of folding or flattening with folding or flattening of the folding chassis.