CN112178040B

CN112178040B - Rotating shaft module and folding device using same

Info

Publication number: CN112178040B
Application number: CN202010375725.4A
Authority: CN
Inventors: 许有村
Original assignee: Jarllytec Co Ltd
Current assignee: Jarllytec Co Ltd
Priority date: 2019-07-02
Filing date: 2020-05-07
Publication date: 2021-11-09
Anticipated expiration: 2040-05-07
Also published as: CN112178040A

Abstract

The invention relates to a rotating shaft module and a folding device using the same, wherein the rotating shaft module is provided with a first arc-shaped guide part and a second arc-shaped guide part between two side surfaces of an arc-shaped base body; the second connecting part of a second rotating part is connected with the second supporting plate, and at least one second arc-shaped block of the second rotating part swings in an arc shape and is limited in the second arc-shaped guide part; one end of a first linkage assembly is pivoted with one side of the first arc-shaped block, and the other end of the first linkage assembly is provided with a first linkage piece; one end of a second linkage component is pivoted with one side of the second arc-shaped block, the other end of the second linkage component is provided with a second linkage part, and the second linkage part is connected with the first linkage part in a relative reverse movement mode.

Description

Rotating shaft module and folding device using same

Technical Field

The present invention relates to a hinge, and more particularly, to a hinge module and a foldable device using the hinge module.

Background

In a conventional foldable device, such as a display and a base of a notebook computer, a single-axis hinge is mainly used to connect the side of the display and the base to form a pivot so that the display can be turned and opened or closed relative to the base. In recent years, a foldable device has been proposed, which uses at least two bodies instead of a conventional display and a base and is used in combination with a flexible display, wherein, as shown in a hinge module patent of the foldable device of the national patent application No. CN 201810371007.2 (hereinafter referred to as "patent document 1"), an embodiment of the foldable device mainly includes a first support member, a pair of open-type hinges, a second support member, a multi-axis hinge, and a third support member for use in combination with a flexible display, so that after being folded into an S-shape or a Z-shape as a whole, the first support member and the second support member connected to the split-type hinges can be closed through a single virtual rotation center, and an accommodation space is formed inside the split-type hinge to accommodate a curved region of the display.

Then, as the following improved hinge module of the foldable device (referred to as "front case 2") of the application No. CN109488681A of the people's republic of china, a structure of "cover plate and swing member" is added, so that a free swing action similar to a seesaw can be generated during the whole bending and flattening process, a containing space can be made to accommodate the curved middle part of the flexible display during the whole bending, and a stable support can be formed for the flattened middle part of the flexible display during the whole flattening.

Therefore, the inventor of the present invention has subsequently proposed a hinge module (referred to as "front case 3" hereinafter) of a foldable device in the application No. CN201910587928.7 of the people's republic of china, so as to simplify the operation of the hinge module in the cases 1 and 2, change the single virtual rotation center into the dual virtual rotation centers, and utilize the two rotation members to rotate synchronously relative to the arc-shaped base body to replace the compensation operation generated by the shaftless seesaw structure; the non-shaft seesaw structure and the compensation action generated by the non-shaft seesaw structure are removed, so that the whole thickness is reduced to be beneficial to design, and the service life of the flexible display is prolonged in response to the small curvature limit of the existing flexible display during bending.

Disclosure of Invention

However, regardless of the single virtual rotation center of the foregoing case 1 or the non-axisymmetric see-saw structure adopted in the foregoing case 2, after the two bodies of the foldable device are closed, the bending portion of the flexible display inside the foldable device can form a small curvature, so as to make the entire foldable device thinner, but the technical developments of the display manufacturers are different, and not all the bending portions of the flexible display form a small curvature, or form a different bending state when forming a small curvature, so for those flexible displays with different bending states, it is necessary to have a suitable hinge module to implement the flexible display in a matching manner, rather than completely adopting the structural design of the foregoing cases 1 and 2, so as to reduce the problem of damage to the flexible display. Moreover, in the prior art 3, after the two bodies are closed, a gap which is roughly triangular is formed at the common bending end of the two bodies, so that the flexible displays in the two bodies are exposed. Therefore, dust or moisture can enter through the gap, so that the flexible display is polluted, even the flexible display is damaged. In view of the above, in order to provide a structure different from the prior art and maintain the advantages of the above-mentioned thinning, the inventor has made many years of experience and continuous research and development improvements, and has come to the present invention.

An object of the present invention is to provide a hinge module and a foldable device using the same, which can simplify the hinge module operation of the prior art, change the single virtual rotation center of the prior art 1 into a double virtual rotation center, and utilize two rotating members to rotate synchronously with respect to an arc-shaped base body to replace the compensation operation generated by the shaftless seesaw structure; the shaftless seesaw structure and the compensation action generated by the structure of the prior case 2 are eliminated, so that the whole thickness is reduced to facilitate the design, the market demand of light and thin whole volume is achieved to promote the sale, and the service life of the flexible display is prolonged in response to the small curvature limit of the existing flexible display during bending.

Another objective of the present invention is to provide a hinge module and a foldable device using the same, which can remove part of the hinge module and simplify the hinge linkage structure of the first linkage assembly and the second linkage assembly of the previous cases 1 and 2, so as to save the manufacturing and assembling cost, further allow the two bodies to be closed with each other comprehensively, and effectively hide the flexible display, so as to prolong the service life of the flexible display.

To achieve the above object, the present invention provides a hinge module including an arc-shaped base, a first rotating member, a second rotating member, a first linking member and a second linking member. The arc seat body is provided with two opposite side surfaces, and a first arc guide part and a second arc guide part which are arranged in parallel at intervals are arranged between the two side surfaces; the first rotating part comprises a first connecting part and at least one first arc-shaped block, the first connecting part is connected with the first supporting plate, and the at least one first arc-shaped block is limited in the first arc-shaped guide part in a manner of swinging relative to the arc; the second rotating part comprises a second connecting part and at least one second arc-shaped block, the second connecting part is connected with the second supporting plate, and the at least one second arc-shaped block is limited in the second arc-shaped guide part in a manner of swinging relative to the arc; one end of the first linkage component is pivoted with one side of the first arc-shaped block of the first rotating component, and the other end of the first linkage component is provided with a first linkage component; one end of the second linkage component is pivoted with one side of the second arc-shaped block of the second rotating component, the other end of the second linkage component is provided with a second linkage component, and the second linkage component is connected with the first linkage component in a relative reverse movement mode.

When the arc base is implemented, the first arc guiding part of the arc base comprises two first arc grooves which are parallel at intervals, the first rotating part is provided with two first arc blocks which are parallel at intervals, and the two first arc blocks are respectively limited in the two first arc grooves in a manner of swinging relative to the arc.

When the first rotating member rotates, the first sliding block is driven to move on the first rail.

When the arc-shaped seat body is implemented, a first accommodating space is further formed in the arc-shaped seat body, a first elastic piece is accommodated in the first accommodating space, one end of the first elastic piece abuts against a first positioning ball, and the first positioning ball abuts against a first arc-shaped block to position the first rotating piece at a preset angle position.

When the positioning device is implemented, the first arc-shaped block is an arc-shaped frame body and comprises two first side plates and a first arc-shaped plate which is respectively connected with the two first side plates, and at least one first positioning groove is arranged on the inner arc surface of the first arc-shaped plate and used for positioning the first positioning ball.

When the arc base is implemented, the second arc guiding part of the arc base comprises two second arc grooves which are parallel at intervals, the second rotating part is provided with two second arc blocks which are parallel at intervals, and the two second arc blocks are respectively limited in the two second arc grooves in a mode of swinging relative to the arc.

When the two-arc-shaped seat body is implemented, a second track is further arranged between the two second arc-shaped grooves of the arc-shaped seat body, a second connecting rod assembly is further arranged between the two second arc-shaped blocks of the second rotating part, the second connecting rod assembly comprises a second sliding block and two second torsion bars, the second sliding block is connected with the second track, one ends of the two second torsion bars are respectively pivoted on one side of the two second arc-shaped blocks, and the other ends of the two second torsion bars are respectively pivoted on two sides of the second sliding block, so that the second sliding block is driven to move on the second track when the second rotating part rotates.

When the positioning device is used, the arc seat body is further provided with a second accommodating space, a second elastic piece is accommodated in the second accommodating space, one end of the second elastic piece abuts against a second positioning ball, and the second positioning ball abuts against a second arc-shaped block to position the second rotating piece at a preset angle position.

When the positioning device is implemented, the second arc-shaped block is an arc-shaped frame body and comprises two second side plates and a second arc-shaped plate which is respectively connected with the two second side plates, and at least one second positioning groove is arranged on the inner arc surface of the second arc-shaped plate and used for positioning a second positioning ball.

When in use, a gear is arranged between the first arc-shaped guide part and the second arc-shaped guide part of the arc-shaped seat body; the first linkage assembly comprises a first torsion piece and a first linkage piece, one end of the first torsion piece is pivoted with one side of the first arc-shaped block of the first rotation piece, the other end of the first torsion piece is pivoted with the first linkage piece, the first linkage piece is a rack, and the first linkage piece is meshed with the gear; the second linkage assembly comprises a second torsion piece and a second linkage piece, one end of the second torsion piece is pivoted on one side of the second arc-shaped block of the second rotating piece, the other end of the second torsion piece is pivoted on the second linkage piece, the second linkage piece is a rack, and the second linkage piece is meshed with the gear.

When the torsion device is used, the first torsion piece and the second torsion piece are respectively formed by overlapping a plurality of torsion pieces.

When the first rotating member rotates, the first guide rail is driven to move on the third rail.

When the arc base is in operation, the arc base is further provided with a fourth track, the second linkage piece is further provided with a second guide rail, and the second guide rail is connected with the fourth track so as to drive the second guide rail to move on the fourth track when the second rotating piece rotates.

In practice, the first torsion bar and the second torsion bar are respectively formed by overlapping a plurality of torsion sheets.

To achieve the above objects, the hinge module of the second embodiment of the present invention includes an arc-shaped base, a first rotating member, a second rotating member, a first linking member and a second linking member. The arc seat body is provided with two opposite side surfaces, and a first arc guide part and a second arc guide part which are arranged in parallel at intervals are arranged between the two side surfaces; the first rotating part comprises a first connecting part and at least one first arc-shaped block, the first connecting part is connected with a first supporting plate, the at least one first arc-shaped block is limited in the first arc-shaped guide part in a relatively arc-shaped swinging mode, and one side end of the at least one first arc-shaped block is provided with at least one first positioning part for abutting against one end of a first telescopic part so as to limit the swinging angle of the at least one first arc-shaped block; the second rotating part comprises a second connecting part and at least one second arc-shaped block, the second connecting part is connected with a second supporting plate, the at least one second arc-shaped block is limited in the second arc-shaped guide part in a relatively arc-shaped swinging mode, and one side end of the at least one second arc-shaped block is provided with at least one second positioning part for abutting against one end of a second telescopic part so as to limit the swinging angle of the at least one second arc-shaped block; one end of the first linkage part is pivoted with the other end of the at least one first arc-shaped block of the first rotating part so as to enable the first linkage part to move linearly when the at least one first arc-shaped block swings in an arc shape; the second linkage part is connected with the first linkage part in a relatively reverse movement mode, and one end of the second linkage part is pivoted with the other side end of the at least one second arc-shaped block of the second rotating part, so that the second linkage part moves linearly when the at least one second arc-shaped block swings in an arc shape.

In addition, the foldable device of the present invention further includes a first body, a second body and a flexible display, wherein the first body is pivotally provided with a first supporting plate, the second body is pivotally provided with a second supporting plate, the first supporting plate and the second supporting plate are respectively connected to two half surfaces of the flexible display and respectively form a relative rotation in the first body and the second body; the foldable device comprises an arc base body, a first side guide rail, a second side guide rail, a third side guide rail, a first side guide rail and a second side guide rail, wherein the first side guide rail is arranged outside one side surface of the arc base body, the second side guide rail and the third side guide rail are arranged in one end side surface of the corresponding first machine body, the second side guide rail and the third side guide rail are respectively connected with the first side guide rail and respectively form relative movement with the first side guide rail, and further respectively guide and restrict the two supporting plates to respectively rotate in limited angles, so that the first machine body and the second machine body respectively rotate relative to the arc base body to be unfolded or closed, and when the foldable device is in a folded state, the two parallel first supporting plates and the second supporting plates form enough accommodating space between each other to accommodate the bent part of the flexible display.

When the first side guide rail is implemented, the first side guide rail comprises two convex columns protruding out of one side surface of the arc-shaped base body, and the corresponding second side guide rail and the corresponding third side guide rail are arc-shaped grooves formed in one side surface of the second machine body and arc-shaped grooves formed in one side surface of the first machine body respectively.

When the device is implemented, at least one detachable guide rail structural part is locked on the bottom surface of one end in the second machine body, one end of at least one guide rail structural part is bent and extended to form an extension piece so as to be embedded in the side surface of one end of the adjacent second machine body, and the second side guide rail is arranged on the surface of the extension piece to be mutually guided and drawn with a convex column of the first side guide rail.

When the device is implemented, at least one detachable guide rail structural part is locked on the bottom surface of one end in the first machine body, one end of at least one guide rail structural part is bent to extend out an extension piece so as to be embedded in the side surface of one end of the adjacent first machine body, and the third side guide rail is arranged on the surface of the extension piece to be mutually guided and drawn with the other convex column of the first side guide rail.

When the device is implemented, a first fixing part is arranged inside the other end of the second machine body, one end of the second supporting plate is supported against one end of the arc-shaped base body so as to be flush with the top surface of the arc-shaped base body and is used for connecting a second connecting part of the second rotating part, the other end of the second supporting plate is connected with a first connecting part, one end of the first connecting part is pivoted with the first fixing part, so that the second side guide rail and the first side guide rail move relatively and guide and restrain mutually, and the second supporting plate rotates in the second machine body at a limited angle.

When the fixing device is implemented, the first fixing piece comprises a base and an upper cover, a gap is formed in the middle of the base, and two opposite sides of the gap are respectively concavely provided with a pivoting hole; one end of the first connecting piece is provided with a pivot and an inclined plane extending from the pivot to the bottom surface, and two opposite shaft ends of the pivot are respectively pivoted with two pivoting holes of the first fixing piece.

When the first machine body is implemented, a second fixing part is arranged inside the other end of the first machine body, one end of the first supporting plate is supported against the other end of the arc-shaped base body so as to be flush with the top surface of the arc-shaped base body and is used for being connected with a first connecting part of the first rotating part, the other end of the first supporting plate is connected with a second connecting part, one end of the second connecting part is pivoted with the second fixing part, and the third side guide rail and the first side guide rail move relatively and are guided and drawn mutually, so that the first supporting plate can rotate in the first machine body at a limited angle.

When the device is implemented, the second fixing piece comprises a base and an upper cover, a gap is formed in the middle of the base, and two opposite sides of the gap are respectively concavely provided with a pivoting hole; one end of the second connecting piece is provided with a pivot and an inclined plane extending from the pivot to the bottom surface, and two opposite shaft ends of the pivot are respectively pivoted with two pivoting holes of the second fixing piece.

To facilitate a more thorough understanding of the present invention, the following detailed description is provided:

drawings

FIG. 1 is a schematic perspective view illustrating a first embodiment of the present invention;

FIG. 2 is an exploded view of the components of the first embodiment of the present invention;

FIG. 3 is an exploded view of a portion of the components of the first embodiment of the present invention;

FIG. 4 is a top view of the first embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A' of FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B' of FIG. 4;

FIG. 7 is a schematic cross-sectional view of a first embodiment of the present invention when folded;

FIG. 8 is a schematic perspective view of the first embodiment of the present invention when folded;

FIG. 9 is an exploded view of components of a simplified embodiment of the present invention;

FIG. 10 is a schematic external view of an electronic device according to a first embodiment of the invention when folded;

FIG. 11 is a schematic perspective view of a second embodiment of the present invention;

FIG. 12 is an exploded view of a portion of a second embodiment of the present invention;

FIG. 13 is an exploded view of the components of a second embodiment of the present invention;

FIG. 14 is an exploded view of a portion of a second embodiment of the present invention;

FIG. 15 is a top view of a second embodiment of the present invention;

FIG. 16 is a cross-sectional view A-A' of FIG. 15;

FIG. 17 is a sectional view taken along line B-B' of FIG. 15;

FIG. 18 is a schematic cross-sectional view of a second embodiment of the present invention when folded;

FIG. 19 is a schematic perspective view of a second embodiment of the present invention when folded;

fig. 20 is a perspective view of the second embodiment of the present invention when folded.

Description of the reference numerals

First telescopic member 11 of rotating shaft module 1

First compression spring 111 and first telescopic tube 112

Telescopic rods 113,123, telescopic tubes 114,124

Head 115,115 ', 125' second telescopic member 12

Second compression spring 121 second telescopic tube 122

Arc base 21 of arc base body 2

Side 211 posts 212,213

First side rail 214 second side rail 215

Third side rail 216 cover plate 22

First arc convex part 221 first upper rail 222

Second arc convex part 223 first containing

space

2211,2231

Third Upper track 224 fourth Upper track 225

Third arc convex part 226 and second

accommodating space

2261,2281

Second upper track 227 fourth arc projection 228

First arc guide portion 23 first arc groove 231,231'

First positioning groove 232 and second arc-shaped guide part 24

Second arcuate slot 241,241' second positioning slot 242

First track 25 and second track 26

Third track 27 fourth track 28

Gear 29 first rotating member 3

First connecting part 31 and first support 311,311'

First connecting plate 312 first arcuate pieces 32, 32'

First side plate 321 first arc plate 322

First positioning groove 323 first lateral protruding shaft 324

Outer flat 325 first pivot 326

First link assembly 33 first elastic member 34

First ball 35 and first slide 36

First upper straight groove 361 and first lower straight groove 362

First torsion bar 37, 37' first positioning portion 38,381

Second rotating member 4 second connecting portion 41

Second support bar 411, 411' and second connecting plate 412

Second arc-shaped block 42, 42' second side plate 421

Second arc-shaped plate 422 second positioning groove 423

Second lateral protruding shaft 424 outer plane 425

Second pivot 426 second link assembly 43

Second elastic member 44 second positioning ball 45

Second upper straight slot 461 of second slider 46

Second lower straight groove 462 second torsion bar 47, 47'

Second positioning portion 48,481 first linkage assembly 5

First linkage 5' first torsion member 51

Inner plane 511 first linkage piece 52

First Upper Rail 521 first Rail 522

First pivot holes 54 of

racks

53,63

Second linkage component 6 second linkage piece 6'

Inner plane 611 of second torsion member 61

The second coupling member 62 and the second upper rail 621

Second guide 622 second pivot hole 64

First connector 90 second connector 90'

Pivot 901,901 'ramp 902, 902'

First support plate 91 and second support plate 92

Accommodating space 94 of flexible display 93

Second display 95 first body 96

Guide rail structure 961,971 extension 962,972

Second body 97 first fixing member 98

Base 981,991 upper cover 982,992

Notch 983,993 is pivotally connected to hole 984,994

A second fixing member 99.

Detailed Description

Please refer to fig. 1, which is a first embodiment of a hinge module 1 of a foldable device according to the present invention, wherein a first connecting portion 31 of a first rotating member 3 is connected to a side of a first supporting plate 91 of a body (e.g., a display) of an electronic device, a second connecting portion 41 of a second rotating member 4 is connected to a side of a second supporting plate 92 of another body (e.g., a base) of the electronic device, the first supporting plate 91 and the second supporting plate 92 are connected to a flexible display 93, so that when the first rotating member 3 and the second rotating member 4 rotate relatively around an arc base 2, the two bodies (e.g., the display and the base) are turned over to fold the flexible display 93, and when the body outside where the first supporting plate 91 is located is shown in fig. 10, a second display 95 can be further provided, and when the whole body is in a foldable shape, information can be displayed or further touch operation can be performed through the second display 95; in addition, two touch displays can be connected to the first supporting plate 91 and the second supporting plate 92 in parallel, respectively, instead of the flexible display 93, and the first connecting portion 31 of the first rotating member 3 and the second connecting portion 41 of the second rotating member 4 are connected to one side of the two parallel supporting plates, respectively, even though the hinge module of the present invention can be applied to a foldable (electronic) device with a dual touch display.

Please refer to fig. 2 to fig. 6, which illustrate a hinge module 1 of a folding device according to a first embodiment of the present invention, including an arc-shaped base 2, a first rotating member 3, a second rotating member 4, a first linking member 5 and a second linking member 6.

The arc base body 2 comprises an arc base 21 and a cover plate 22, the arc base 21 is provided with two opposite side surfaces 211, a first arc guiding part 23 and a second arc guiding part 24 which are arranged in parallel at intervals are arranged on the arc base 21 between the two side surfaces 211, the first arc guiding part 23 comprises two first arc grooves 231 and 231 'which are arranged in parallel at intervals, and a first track 25 is arranged between the two first arc grooves 231 and 231'; the second arc-shaped guiding part 24 comprises two second arc-shaped grooves 241 and 241 'which are spaced and arranged in parallel, and a second track 26 is arranged between the two second arc-shaped grooves 241 and 241'; a third rail 27 and a fourth rail 28 are further disposed on the arc base 21 between the first arc guiding portion 23 and the second arc guiding portion 24, and a gear 29 is disposed between the third rail 27 and the fourth rail 28. The cover plate 22 is covered and connected to the top surface of the arc base 21, and the plate surface of the cover plate 22 has a first arc protrusion 221, a first upper rail 222, a second arc protrusion 223, a third upper rail 224, a fourth upper rail 225, a third arc protrusion 226, a second upper rail 227 and a fourth arc protrusion 228 arranged in sequence. The first arc convex portion 221, the second arc convex portion 223, the third arc convex portion 226 and the fourth arc convex portion 228 are respectively accommodated in the first arc-shaped grooves 231,231 'and the second arc-shaped grooves 241, 241', and the first upper rail 222, the third upper rail 224, the fourth upper rail 225 and the second upper rail 227 are respectively arranged opposite to the first rail 25, the third rail 27, the fourth rail 28 and the second rail 26. The first arc convex part 221 and the second arc convex part 223 are respectively provided with a first

accommodating space

2211,2231, and the third arc convex part 226 and the fourth arc convex part 228 are respectively provided with a second

accommodating space

2261, 2281.

The first rotating member 3 includes a first connecting portion 31, two first arc-shaped blocks 32,32 ' and a first connecting rod assembly 33, the first connecting portion 31 includes two first supporting rods 311,311 ' and a first connecting plate 312 respectively connected to one end of the two first supporting rods 311,311 ', the first connecting plate 312 is connected to the side of the first supporting plate 91 of the display of an electronic device, and the other end of the two first supporting rods 311,311 ' respectively extends out of the two parallel first arc-shaped blocks 32,32 '. Taking a first arc block 32 as an example, the first arc block 32 is an arc frame, and includes two first side plates 321 and a first arc plate 322 respectively connected to the two first side plates 321, and two first positioning slots 323 are disposed on the inner arc surface of the first arc plate 322. When the first arc-shaped block 32 is constrained in the first arc-shaped guiding portion 23 in a manner of swinging relatively to the arc shape, a compression spring is accommodated in the first accommodating space 2211 of the first arc-shaped protrusion 221, the compression spring serves as the first elastic member 34, one end of the first elastic member 34 presses against a first positioning ball 35, the first positioning ball 35 presses against the inner arc surface of the first arc-shaped plate 322, and the first rotating member 3 is positioned at a predetermined angle position by positioning the first positioning ball 35 in any one of the first positioning grooves 323.

The first link assembly 33 is connected between the two first arc-shaped blocks 32 and 32 ', the first link assembly 33 includes a first sliding block 36 and two first torsion bars 37 and 37', a first upper straight groove 361 and a first lower straight groove 362 are respectively formed on the top surface and the bottom surface of the first sliding block 36, and the first upper straight groove 361 and the first lower straight groove 362 respectively accommodate and limit the first upper rail 222 of the cover plate 22 and the first rail 25 of the arc-shaped base 21; the two first torsion bars 37,37 ' are formed by overlapping a plurality of torsion sheets, one end of each of the two first torsion bars 37,37 ' is pivotally connected to one side of each of the two first arc-shaped blocks 32,32 ', and the other end of each of the two first torsion bars 37,37 ' is pivotally connected to two sides of the first slider 36, so that when the first rotating member 3 rotates, the first slider 36 is driven to move on the first upper rail 222 and the first rail 25 by the linkage of the two first torsion bars 37,37 '.

The second rotating member 4 includes a second connecting portion 41, two second arc-shaped blocks 42,42 ' and a second link assembly 43, the second connecting portion 41 includes two second supporting rods 411,411 ' and a second connecting plate 412 respectively connecting one ends of the two second supporting rods 411,411 ', the second connecting plate 412 is connected to a side of the second supporting plate 92 of the other body (another display or base) of the electronic device, and the other ends of the two second supporting rods 411,411 ' respectively extend out of the two parallel and parallel second arc-shaped blocks 42,42 '. Taking a second arc-shaped block 42 as an example, the second arc-shaped block 42 is an arc-shaped frame body, and includes two second side plates 421 and a second arc-shaped plate 422 respectively connected to the two second side plates 421, and two second positioning grooves 423 are disposed on the inner arc surface of the second arc-shaped plate 422. When the second arc-shaped block 42 is constrained in the second arc-shaped guiding portion 24 in a relatively arc-shaped swinging manner, a compression spring is accommodated in the second accommodating space 2281 of the fourth arc-shaped protrusion 228, the compression spring serves as the second elastic element 44, one end of the second elastic element 44 presses against a second positioning ball 45, the second positioning ball 45 presses against the inner arc surface of the second arc-shaped plate 422, and the second rotating element 4 is positioned at a predetermined angular position by positioning the second positioning ball 45 in any one of the second positioning slots 423.

The second connecting rod assembly 43 is connected between the two second arc-shaped blocks 42 and 42 ', the second connecting rod assembly 43 comprises a second sliding block 46 and two second torsion rods 47 and 47', the top surface and the bottom surface of the second sliding block 46 respectively form a second upper straight groove 461 and a second lower straight groove 462, and the second upper straight groove 461 and the second lower straight groove 462 respectively accommodate and limit the second upper rail 227 of the cover plate 22 and the second rail 26 of the arc-shaped base 21; the two second torsion bars 47,47 ' are formed by overlapping a plurality of torsion sheets, one end of each of the two second torsion bars 47,47 ' is pivotally connected to one side of each of the two second arc-shaped blocks 42,42 ', and the other end of each of the two second torsion bars 47,47 ' is pivotally connected to both sides of the second slider 46, so that when the second rotating member 4 rotates relative to the first rotating member 3, the second slider 46 is driven to move on the second upper track 227 and the second track 26 by the linkage of the two second torsion bars 47,47 '.

The first linkage assembly 5 includes a first torsion member 51 and a first linkage member 52, the first torsion member 51 is formed by overlapping a plurality of torsion sheets, one end of the first torsion member 51 is pivoted to one side of the first arc-shaped block 32' of the first rotation member 3, and the other end of the first torsion member 51 is pivoted to the first linkage member 52; the first linking member 52 is a rack, a first upper rail 521 and a first rail 522 are respectively formed on the top surface and the bottom surface of the first linking member 52, and the first upper rail 521 and the first rail 522 respectively accommodate and limit the third upper rail 224 of the cover plate 22 and the third rail 27 of the arc-shaped base 21; the tooth portion on the side of the first link member 52 engages the side of the gear 29.

The second linkage assembly 6 has the same structure as the first linkage assembly 5 and is reversely symmetrical to two sides of the gear 29, wherein one end of the second torsion member 61 of the second linkage assembly 6 is pivotally connected to one side of the second arc-shaped block 42' of the second rotation member 4, the other end of the second torsion member 61 is pivotally connected to the second linkage member 62, the second linkage member 62 can slide on the fourth upper track 225 of the cover plate 22 and the fourth track 28 of the arc-shaped base 21 through the second upper guide 621 and the second guide 622, and the tooth portion of one side of the second linkage member 62 is engaged with the other side of the gear 29.

Therefore, as shown in fig. 2, fig. 3, fig. 7, and fig. 8, in the process of turning over, closing or completely unfolding two supporting plates (i.e. the display relative to the base or the touch display relative to the other touch display), when the second rotating member 4 rotates relative to the first rotating member 3, the first torsion member 51 and the second torsion member 61 are linked to drive the first linking member 52 and the second linking member 62, so that the first linking member 52 and the second linking member 62 can move oppositely on the third track 27 and the fourth track 28 respectively by using the gear 29 as the rotation axis. The two first torsion bars 37 and 37 ', the two second torsion bars 47 and 47', the first torsion member 51 and the second torsion member 61 respectively generate rotation friction which is operated together to generate torsion, so that the torsion can be stably maintained within a preset range at each rotation angle, and further, the two parallel support plates which are combined with the display and the base or the dual-touch display can relatively stably rotate and can freely stop at a certain angle during rotation. When the two parallel support plates are folded, a sufficient accommodating space 94 can be formed for accommodating the bending portion of the flexible display 93 with small curvature.

In addition, the hinge module of the present invention can further simplify the components to reduce the process and the cost, and the simplified embodiment is shown in fig. 9, in the arc base 21 of the arc base 2, besides the gear 29, the third rail 27 and the fourth rail 28, the first arc guiding portion 23 is provided with a first arc groove 231, the second arc guiding portion 24 is provided with a second arc groove 241, and a first arc protrusion 221 (or a second arc protrusion 223), a third upper rail 224, a fourth upper rail 225 and a fourth arc protrusion 228 (or a third arc protrusion 226) are sequentially arranged on the plate surface of the cover plate 22 of the arc base 2; the first rotating member 3 includes a first supporting rod 311 of the first connecting portion 31 and a first arc-shaped block 32, the first arc-shaped block 32 is located between the first arc-shaped protrusion 221 (or the second arc-shaped protrusion 223) and the first arc-shaped groove 231 to form relative arc-shaped swing; the second rotating member 4 includes a second supporting rod 411 and a second arc-shaped block 42 of the second connecting portion 41, the second arc-shaped block 42 is located between the fourth arc-shaped protrusion 228 (or the third arc-shaped protrusion 226) and the second arc-shaped groove 241 to form a relative arc-shaped swing; the first linkage assembly 5 includes a first torsion member 51 and a first linkage member 52 as a rack, the first torsion member 51 is integrally formed, opposite ends of the first torsion member 51 are respectively pivoted to the first arc block 32 and the first linkage member 52, the first linkage member 52 is engaged with one side of the gear 29 and respectively accommodates and limits the third upper rail 224 and the third rail 27 by the first upper rail 521 and the first rail 522; the second linkage assembly 6 includes a second torsion member 61 and a second linkage member 62 as a rack, the second torsion member 61 is integrally formed, opposite ends of the second torsion member 61 are respectively pivoted to the second arc-shaped block 42 and the second linkage member 62, the second linkage member 62 is engaged with the other side of the gear 29 and the second upper rail 621 and the second rail 622 respectively accommodate and limit the fourth upper rail 225 and the fourth rail 28.

In the simplified embodiment, the first rotating member 3 and the second rotating member 4 as the main rotating elements require torsion and positioning effects, so that a first lateral protruding shaft 324 and a second lateral protruding shaft 424 are respectively disposed on one side of the first arc-shaped block 32 and one side of the second arc-shaped block 42, but the axial centers of the two lateral protruding shafts are not virtual rotation centers of the respective rotating members, at least one outer plane 325, 425 is respectively formed on the peripheral sides of the first lateral protruding shaft 324 and the second lateral protruding shaft 424, a pivot shaft hole is respectively formed at one end of the first torsion member 51 and one end of the second torsion member 61 and the first lateral protruding shaft 324 and the second lateral protruding shaft 424, an inner plane 511, 611 is formed on the inner wall of each pivot shaft hole to correspondingly engage each at least one outer plane 325, 425 on each inner plane 511, 611, and then each rotating member is positioned, and a radial opening is respectively disposed at one end of the first torsion member 51 and one end of the second torsion member 61 to communicate with each radial opening The lateral protruding shafts form forward and reverse rotation friction in the pivoting shaft holes respectively, so that the effects of light opening and heavy closing are achieved; the above technical means can also be applied between the rotating parts and the torsion bars of the connecting rod assemblies in the above preferred embodiment, and the structure is the same, so that the detailed description is omitted.

Referring to fig. 11 to fig. 20, the second embodiment of the present invention is different from the first embodiment in that: two convex columns 212,213 are arranged outside one side surface of the arc base body 2, and the two convex columns 212,213 are used as a first side guide rail 214; an arc-shaped groove is arranged in one end side face of the corresponding second body 97, the arc-shaped groove is used as a second side guide rail 215, another arc-shaped groove is arranged in one end side face of the corresponding first body 96, the another arc-shaped groove is used as a third side guide rail 216, the second side guide rail 215 is connected with a convex column 213 of the first side guide rail 214 and moves relatively, and then the mutual guiding and the restraining are realized, and the third side guide rail 216 is connected with another convex column 212 of the first side guide rail 214 and moves relatively, and then the mutual guiding and the restraining are realized, so that when the first rotating part 3 and the second rotating part 4 respectively rotate relatively with the arc-shaped seat body 2 by a virtual rotation center, the two bodies can be relatively overturned on a preset rotation path to unfold or fold the flexible display 93; preferably, the two opposite side surfaces of the arc-shaped seat body 2 are respectively provided with a first side guide rail 214, the two opposite side surfaces of one end of the corresponding second body 97 are respectively provided with a second side guide rail 215, the two opposite side surfaces of one end of the corresponding first body 96 are respectively provided with a third side guide rail 216, so that the second side guide rails 215 are respectively and correspondingly connected to one convex column 213 of the first side guide rails 214 to form mutual traction, and the third side guide rails 216 are respectively and correspondingly connected to the other convex column 212 of the first side guide rails 214 to form mutual traction, so that the two bodies are relatively turned over on a predetermined rotation path more stably.

One end of the second body 97 is connected to one end of the arc seat 2, and a first fixing member 98 and a first connecting member 90 are disposed inside the other end of the second body 97. The first fixing member 98 includes a base 981 and an upper cover 982, a gap 983 is formed in the middle of the base 981, and when the upper cover 982 covers the base 981, the first fixing member 98 is recessed to form a pivot hole 984 on two opposite sides of the gap 983; the first connecting member 90 is a rectangular plate, one end of which has a pivot 901 and an inclined plane 902 extending from the pivot 901 to the bottom surface, the first connecting member 90 is locked to the other end of the second supporting plate 92, one end of the second supporting plate 92 is supported against one end of the arc base 2 to be flush with the top surface of the arc base 2 for connecting the second connecting portion 41 of the second rotating member 4, and at least one detachable rail structure member 961 is locked to the bottom surface of one end of the second body 97, and one end of at least one rail structure member 961 is bent to extend out an extending piece 962 so as to be embedded into the adjacent side surface of one end of the second body 97, one end of the first connecting member 90 is respectively pivoted to the two pivoting holes 984 of the first fixing member 98 through the two opposite axial ends of the pivot 901, so that one end of the first connecting member 90 is pivoted to the first fixing member 98 and the other end of the second connecting member 97 is pivoted to the other end of the second supporting plate 92, the second side rail 215 is disposed on a surface of the extension piece 962 to be guided and restrained by a protrusion 213 of the first side rail 214, so that the second supporting plate 92 can rotate within the second body 97 for a limited angle when the two bodies are turned over, thereby enabling a half of the curved flexible display 93 to be smoothly unfolded.

One end of the first body 96 is connected with the other end of the arc-shaped seat body 2, a second fixing piece 99 and a second connecting piece 90' are arranged inside the other end of the first body 96, the second fixing piece 99 has the same structure as the first fixing piece 98, and also comprises a base 991 and an upper cover 992, a notch 993 is formed in the middle of the base 991 of the second fixing piece 99, and when the upper cover 992 of the second fixing piece 99 covers the base 991, the second fixing piece 99 is also respectively concavely arranged on two opposite sides of the notch 993 to form a pivot hole 994; the second connecting member 90 'is also a rectangular plate, one end of which has a pivot 901' and an inclined plane 902 'extending from the pivot 901' toward the bottom surface, and the second connecting member 90 'is locked to the other end of the first supporting plate 91, one end of the first supporting plate 91 is supported against the other end of the arc base body 2 to be flush with the top surface of the arc base body 2 for connecting the first connecting portion 31 of the first rotating member 3, and is locked to the bottom surface of one end of the first body 96 by at least one detachable guide rail structural member 971, and one end of at least one guide rail structural member 971 is bent to extend out an extending piece 972 to be embedded in two adjacent axial end surfaces of the first body 96, one end of the second connecting member 90' is respectively pivoted to the two pivot holes 994 of the second fixing member 99 through the opposite ends of the pivot 901 ', so that one end of the second connecting member 90' is pivoted to the second fixing member 99 and the other end of the first body 96 is pivoted to the other end of the first supporting plate 91, the third side rail 216 is disposed on one surface of the extension piece 972 to be guided and constrained with the other protruding pillar 212 of the first side rail 214, so that the first supporting plate 91 rotates in the first body 96 at a limited angle, and the other half surface of the curved flexible display 93 can be smoothly unfolded.

Referring to fig. 13 and 14, in the arc base 2, a first positioning slot 232 is disposed between the two first arc-shaped slots 231 and 231 ', and two ends of the first positioning slot 232 are respectively communicated with the two first arc-shaped slots 231 and 231' for positioning a first telescopic member 11. In implementation, the first telescopic member 11 includes a first compression spring 111 and a first telescopic tube 112, the first compression spring 111 is sleeved with the first telescopic tube 112, and the first telescopic tube 112 is formed by mutually sleeving a telescopic rod 113 having a head 115 at one end and a telescopic tube 114 having a head 115 'at one end, and two ends of the first compression spring 11 reversely press two heads 115, 115' of the first telescopic tube 112; a second positioning groove 242 is disposed between the two second arc-shaped grooves 241,241 ', and two ends of the second positioning groove 242 are respectively communicated with the two second arc-shaped grooves 241, 241' for positioning a second telescopic member 12. In practice, the second expansion element 12 may have the same structure as the first expansion element 11, and includes a second compression spring 121 and a second expansion sleeve 122, the second compression spring 121 is sleeved on the second expansion sleeve 122, the second expansion sleeve 122 is formed by sleeving an expansion rod 123 having a head 125 at one end thereof and an expansion tube 124 having a head 125 'at one end thereof, and two ends of the second compression spring 121 reversely press against the two

heads

125, 125' of the second expansion sleeve 122. In a second embodiment, which is further simplified, only two parallel tracks and a gear 29 are provided between the two arc-shaped guides of the arc-shaped base 21. And the cover plate 22 covers and is attached to the top surface of the arc base 21.

The first rotating member 3 includes a first connecting portion 31 and two first arc-shaped blocks 32,32 ', the first connecting portion 31 includes two first supporting rods 311, 311', the two first supporting rods 311,311 'are connected to one end side of the first supporting plate 91 of the first body 96, the other ends of the two first supporting rods 311, 311' respectively extend out of two parallel first arc-shaped blocks 32,32 ', and the two first arc-shaped blocks 32, 32' are respectively limited in two arc-shaped guide rails of the first arc-shaped guiding portion 23 in a relatively arc-shaped swinging manner; the two first arc-shaped blocks 32,32 'have at least four recesses on their opposite inner sides, and two pairs of recesses are provided as two sets of recesses, and the paired recesses of each set are respectively pressed against the two end heads 115, 115' of the first telescopic member 11, wherein the paired recesses of one set are used as a first positioning portion 38, and the paired recesses of the other set are used as another first positioning portion 381, so as to be used as positioning when a half of the flexible display 93 is unfolded and folded; the other side end of the first arcuate block 32' has a first pivot 326.

The second rotating member 4 includes a second connecting portion 41 and two second arc-shaped blocks 42,42 ', the second connecting portion 41 includes two second supporting rods 411, 411', the two second supporting rods 411,411 'are connected to one end side of the second supporting plate 92 of the second machine body 97, the other ends of the two second supporting rods 411, 411' respectively extend out of two parallel second arc-shaped blocks 42,42 ', the two second arc-shaped blocks 42, 42' are respectively limited in two arc-shaped guide rails of the second arc-shaped guiding portion 24 in a manner of relatively swinging in an arc shape; the opposite inner sides of the two second arc-shaped blocks 42,42 'have at least four recesses, two by two are set as two sets of recesses, the paired recesses of each set are used for respectively pressing against the two end heads 125, 125' of the second telescopic member 12, one of the paired recesses of one set is used as a second positioning part 48, and the other paired recess of the other set is used as another second positioning part 481 to be used as the positioning when the other half face of the flexible display 93 is unfolded and folded; the other side end of the second arcuate segment 42' has a second pivot 426.

One side end of the first linkage piece 5' is provided with a rack 53, and the rack 53 is meshed with one side of the gear 29; the other side end of the first linking member 5 ' has a first pivot hole 54 for pivotally connecting the first pivot 326 at the other side end of the first arc-shaped block 32 ', so that the inner wall surface of the first pivot hole 54 is directly pushed by the first pivot 326, thereby driving the first linking member 5 ' to move linearly when the first rotating member 3 rotates; the first pivot hole 54 is formed in an elongated shape and is recessed from the other end surface of the first linkage member 5 ', and in the process that the first pivot 326 swings arcuately with the first arcuate block 32', in addition to the first pivot 326, a space for the first pivot 326 to slightly displace can be formed.

The second linkage member 6 'has the same structure as the first linkage member 5' and is oppositely symmetrical to both sides of the gear 29. One side end of the second linkage piece 6' is provided with a rack 63, and the rack 63 is meshed with the other side of the gear 29; the other side end of the second linking member 6 has a second pivot hole 64 for pivotally connecting the second pivot 426 of the other side end of the second arc-shaped block 42 ', so that the inner wall surface of the second pivot hole 64 is directly pushed by the second pivot 426, thereby driving the second linking member 6' to move linearly when the first rotating member 3 and the second rotating member 4 rotate in opposite directions; the second pivot hole 64 is elongated and is recessed from the other end surface of the second linking member 6 ', and in the process that the second pivot 426 swings along with the second arc-shaped block 42' in an arc shape, in addition to the pivot of the second pivot 426, a space for the second pivot 426 to slightly move can be formed.

Therefore, in the process that the first body 96 is turned over and closed or completely unfolded relative to the second body 97, when the second rotating member 4 rotates relative to the first rotating member 3, the first linking member 5 'and the second linking member 6' are driven to move in opposite directions and synchronously relative to each other by taking the gear 29 as a rotating axis. The first rotating member 3 and the second rotating member 4 can be synchronously positioned at a preset swing angle position by respectively and simultaneously guiding and abutting the two end heads 115 and 115 'of the first telescopic member 11 to one of the first positioning portions 38 or the other first positioning portion 381, and respectively and simultaneously guiding and abutting the two end heads 125 and 125' of the second telescopic member 12 to one of the second positioning portions 48 or the other second positioning portion 481; in the relative swing process of the two first arc-shaped blocks 32,32 ' and the two second arc-shaped blocks 42,42 ', after the two end heads 115,115 ' of the first telescopic member 11 lead out the first positioning portions 38,381, the two end heads 125,125 ' of the second telescopic member 12 lead out the second positioning portions 48,481, the two end heads also continuously press against the opposite inner side faces of the two second arc-shaped blocks 42,42 ', friction can be respectively formed to generate torsion, so that the first body 96 and the second body 97 can synchronously and relatively stably rotate, and can synchronously and freely stop at a certain angle during rotation. When the two parallel first supporting plates 91 and the second supporting plates 92 are folded, a sufficient accommodating space 94 can be formed for accommodating the bending portion of the flexible display 93 with small curvature.

Therefore, the invention has the following advantages:

1. the invention adopts double virtual rotation centers, utilizes the synchronous rotation of the two rotating pieces relative to the arc-shaped base body to replace the compensation action generated by the shaftless seesaw structure, and ensures that the two machine bodies can not be completely closed when the two rotating pieces are folded relatively, and a containing space can be still reserved for containing the bending part of the flexible display; therefore, the action of the rotating shaft module can be effectively simplified, the whole thickness is further reduced to be beneficial to design, the market demand of light and thin whole volume is achieved to promote sales, and the small curvature limit of the existing flexible display during bending can be effectively met, so that the service life of the flexible display is prolonged.

2. When the two rotating parts are folded relatively, each sliding block and each linkage part can move on each relative track of the arc-shaped seat body respectively, so that multi-point type stable support can be formed, and the rotating action of the two rotating parts is more stable and smooth.

3. The torsion bars and the torsion pieces can synchronously provide friction torsion and can share load, so that the two rotating pieces can relatively and stably rotate and can be freely stopped at a certain angle during rotation, and further, the torsion change of light opening and heavy closing can be formed and can be positioned and stopped at a certain angle. Besides being formed by overlapping a plurality of plates, each torsion bar and each torsion piece can also be integrally manufactured so as to be correspondingly implemented in actual conditions and increase the flexibility in use.

4. When the two rotating parts are folded relatively, the outer plane of the lateral protruding shaft and the inner plane of the pin-joint shaft hole and/or the inner plane and the outer plane are correspondingly jointed through the combination of the elastic part and the positioning ball, or the positioning ball is positioned in each positioning groove, so that an effective or more remarkable positioning effect can be generated, and the two rotating parts can be positioned at a specific angle more stably so as to be convenient to use.

5. In addition, the second embodiment of the present invention can effectively remove part of the components and simplify the rotating shaft linkage structure of the first linkage assembly and the second linkage assembly, so as to reduce the production cost of the components and reduce the manufacturing and assembling processes, and can fully close the two bodies when the two bodies are turned over, effectively hide the flexible display, and smoothly spread the two halves of the flexible display, so as to prolong the service life of the flexible display; and secondly, at least one guide rail structural part serving as a detachable component is arranged in the two machine bodies, so that the two machine bodies can be conveniently replaced, and the second guide rail and the third guide rail can be matched with machine bodies with different sizes and structures or matched with first guide rails of arc-shaped seat bodies with different types, thereby being beneficial to increasing the application range and providing the flexibility in structural design and use.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, the present invention is not limited to the above-described features, and those skilled in the art will appreciate that various changes and modifications are possible within the technical spirit of the present invention and are covered by the claims.

Claims

1. A hinge module, comprising:

the arc seat body is provided with two opposite side surfaces, and a first arc guide part and a second arc guide part which are arranged in parallel at intervals are arranged between the two side surfaces;

the first rotating part comprises a first connecting part and at least one first arc-shaped block, the first connecting part is connected with a first supporting plate, and the at least one first arc-shaped block is limited in the first arc-shaped guide part in a manner of swinging relative to the arc;

the second rotating part comprises a second connecting part and at least one second arc-shaped block, the second connecting part is connected with a second supporting plate, and the at least one second arc-shaped block is limited in the second arc-shaped guide part in a manner of swinging relative to the arc;

one end of the first linkage component is pivoted with one side of the first arc-shaped block of the first rotating component, and the other end of the first linkage component is provided with a first linkage component; and

one end of the second linkage component is pivoted with one side of the second arc-shaped block of the second rotating component, the other end of the second linkage component is provided with a second linkage part, the second linkage part is connected with the first linkage part, and the second linkage part and the first linkage part move oppositely.

2. The hinge module as claimed in claim 1, wherein the first arc-shaped guiding portion of the arc-shaped base includes two first arc-shaped slots spaced and arranged side by side, the first rotating member has two first arc-shaped blocks spaced and arranged side by side, and the two first arc-shaped blocks are respectively constrained in the two first arc-shaped slots in an arc-shaped swinging manner.

3. The hinge module as claimed in claim 2, wherein a first rail is disposed between the two first arc-shaped slots of the arc-shaped base, a first link assembly is disposed between the two first arc-shaped blocks of the first rotating member, the first link assembly includes a first slider and two first torsion bars, the first slider is connected to the first rail, one end of each of the two first torsion bars is pivotally connected to one side of each of the two first arc-shaped blocks, and the other end of each of the two first torsion bars is pivotally connected to both sides of the first slider, so as to drive the first slider to move on the first rail when the first rotating member rotates.

4. The hinge module as claimed in claim 3, wherein the first torsion bar is formed by stacking a plurality of torsion pieces.

5. The hinge module as claimed in claim 1, wherein the arc base further has a first receiving space, the first receiving space receives a first elastic member, one end of the first elastic member presses against a first positioning ball, and the first positioning ball presses against the first arc block to position the first rotating member at a predetermined angular position.

6. The hinge module of claim 5, wherein the first arc-shaped block is an arc-shaped frame comprising two first side plates and a first arc-shaped plate connecting the two first side plates, and the inner arc surface of the first arc-shaped plate is provided with at least a first positioning slot for positioning the first positioning ball.

7. The hinge module as claimed in claim 1, wherein the second arc-shaped guiding portion of the arc-shaped base includes two second arc-shaped slots spaced and arranged side by side, the second rotating member has two second arc-shaped blocks spaced and arranged side by side, and the two second arc-shaped blocks are respectively constrained in the two second arc-shaped slots in an arc-shaped swinging manner.

8. The hinge module as claimed in claim 7, wherein a second track is disposed between the two second arc-shaped slots of the arc-shaped base, a second connecting rod assembly is disposed between the two second arc-shaped blocks of the second rotating member, the second connecting rod assembly includes a second slider and two second torsion bars, the second slider is connected to the second track, one end of each of the two second torsion bars is pivotally connected to one side of each of the two second arc-shaped blocks, and the other end of each of the two second torsion bars is pivotally connected to both sides of the second slider, so as to drive the second slider to move on the second track when the second rotating member rotates.

9. The hinge module as claimed in claim 8, wherein the second torsion bar is formed by stacking a plurality of torsion pieces.

10. The hinge module as claimed in claim 1, wherein the arc base further has a second receiving space, the second receiving space receives a second elastic member, one end of the second elastic member presses against a second positioning ball, and the second positioning ball presses against the second arc block to position the second rotating member at a predetermined angular position.

11. The hinge module as claimed in claim 10, wherein the second arc-shaped block is an arc-shaped frame, and comprises two second side plates and a second arc-shaped plate respectively connected to the two second side plates, and the inner arc surface of the second arc-shaped plate is provided with at least one second positioning slot for positioning the second positioning ball.

12. The hinge module as claimed in claim 1, wherein a gear is further disposed between the first arc-shaped guiding portion and the second arc-shaped guiding portion of the arc-shaped base; the first linkage assembly comprises a first torsion piece and a first linkage piece, one end of the first torsion piece is pivoted with one side of the first arc-shaped block of the first rotating piece, the other end of the first torsion piece is pivoted with the first linkage piece, the first linkage piece is a rack, and the first linkage piece is meshed with the gear; the second linkage assembly comprises a second torsion piece and a second linkage piece, one end of the second torsion piece is pivoted with one side of the second arc-shaped block of the second rotating piece, the other end of the second torsion piece is pivoted with the second linkage piece, the second linkage piece is a rack, and the second linkage piece is meshed with the gear.

13. The hinge module as claimed in claim 12, wherein the first torsion member and the second torsion member are formed by stacking a plurality of torsion pieces.

14. The hinge module as claimed in claim 12, wherein the curved base further has a third track, the first linking member further has a first guide rail, and the first guide rail is connected to the third track so as to drive the first guide rail to move on the third track when the first rotating member rotates.

15. The hinge module as claimed in claim 12 or 14, wherein the arc base further has a fourth track, the second linking member further has a second guide rail, and the second guide rail is connected to the fourth track, so that when the second rotating member rotates, the second guide rail is driven to move on the fourth track.

16. A hinge module, comprising:

the first rotating part comprises a first connecting part and at least one first arc-shaped block, the first connecting part is connected with a first supporting plate, the at least one first arc-shaped block is limited in the first arc-shaped guide part in a relatively arc-shaped swinging mode, one side end of the at least one first arc-shaped block is provided with at least one first positioning part, and the first positioning part is used for abutting against one end of a first telescopic part so as to limit the swinging angle of the at least one first arc-shaped block;

the second rotating part comprises a second connecting part and at least one second arc-shaped block, the second connecting part is connected with a second supporting plate, the at least one second arc-shaped block is limited in the second arc-shaped guide part in a manner of swinging relative to the arc, one side end of the at least one second arc-shaped block is provided with at least one second positioning part, and the second positioning part is used for abutting against one end of a second telescopic part so as to limit the swinging angle of the at least one second arc-shaped block;

one end of the first linkage piece is pivoted with the other end of the at least one first arc-shaped block of the first rotating piece so as to enable the first linkage piece to move linearly when the at least one first arc-shaped block swings in an arc shape; and

and one end of the second linkage piece is pivoted with the other side end of the at least one second arc-shaped block of the second rotating piece so as to enable the second linkage piece to move linearly when the at least one second arc-shaped block swings in an arc shape.

17. A foldable device using the hinge module of claim 16, further comprising a first body, a second body and a flexible display, wherein the first body is pivotally provided with the first supporting plate, the second body is pivotally provided with the second supporting plate, the first supporting plate and the second supporting plate are respectively connected to two half surfaces of the flexible display and respectively form a relative rotation in the first body and the second body; the first side guide rail is arranged outside one side surface of the arc-shaped base body, the second side guide rail is arranged in one corresponding end side surface of the second machine body, the third side guide rail is arranged in one corresponding end side surface of the first machine body, the second side guide rail and the third side guide rail are respectively connected with the first side guide rail and respectively form relative movement with the first side guide rail, and further respectively guide and restrain the two supporting plates to respectively rotate in limited angles, so that the first machine body and the second machine body respectively rotate and unfold or close relative to the arc-shaped base body with a virtual rotation center.

18. The folding device of claim 17, wherein the first side rail comprises two protruding posts protruding from a side surface of the curved housing, and the corresponding second side rail and the third side rail are curved grooves formed in a side surface of the second housing and a side surface of the first housing, respectively.

19. The folding apparatus of claim 18, wherein at least one rail structure is detachably locked to a bottom surface of one end of the second housing, and one end of the at least one rail structure is bent to extend out of an extension piece so as to be engaged with an end side surface of the adjacent second housing, such that the second side rail is disposed on a surface of the extension piece to be guided and restrained with a boss of the first side rail.

20. The folding apparatus of claim 18, wherein at least one detachable rail structure is locked to a bottom surface of one end of the first housing, and one end of the at least one rail structure is bent to extend out an extension piece so as to be engaged with a side surface of one end of the first housing, and the third rail is disposed on a surface of the extension piece to be guided and restrained by the other protrusion of the first rail.

21. The folding apparatus according to claim 17 or 18, wherein a first fixing member is disposed inside the other end of the second housing, one end of the second supporting plate is supported by one end of the arc-shaped housing to be flush with the top surface of the first fixing member so as to be connected to the second connecting portion of the second rotating member, the other end of the second supporting plate is connected to a first connecting member, one end of the first connecting member is pivotally connected to the first fixing member, so that the second side rail and the first side rail move relative to each other and are guided and restrained relative to each other, so that the second supporting plate can rotate within the second housing by a limited angle.

22. The folding device of claim 21, wherein the first fixing member comprises a base and a cover, the base has a notch formed at a middle portion thereof, and opposite sides of the notch are recessed to form a pivot hole; one end of the first connecting piece is provided with a pivot and an inclined plane extending from the pivot to the bottom surface, and two opposite shaft ends of the pivot are respectively pivoted with two pivoting holes of the first fixing piece.

23. The folding apparatus according to claim 17 or 18, wherein a second fixing member is disposed inside the other end of the first housing, one end of the first supporting plate is supported against the other end of the arc housing to be flush with the top surface of the second fixing member for connecting to the first connecting portion of the first rotating member, the other end of the first supporting plate is connected to a second connecting member, one end of the second connecting member is pivotally connected to the second fixing member, so that the third side rail and the first side rail move relative to each other and are guided and restrained relative to each other, so that the first supporting plate can rotate within the first housing by a limited angle.

24. The folding apparatus of claim 23, wherein the second fixing member comprises a base and a cover, the base has a gap formed at a middle portion thereof, and opposite sides of the gap are recessed to form a pivot hole; one end of the second connecting piece is provided with a pivot and an inclined plane extending from the pivot to the bottom surface, and two opposite shaft ends of the pivot are respectively pivoted with two pivoting holes of the second fixing piece.