CN113007206B

CN113007206B - Folding device

Info

Publication number: CN113007206B
Application number: CN201911316308.6A
Authority: CN
Inventors: 许有村
Original assignee: Jarllytec Co Ltd
Current assignee: Jarllytec Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2023-02-17
Anticipated expiration: 2039-12-19
Also published as: CN113007206A

Abstract

The folding device mainly comprises a first machine body and a second machine body, wherein a first supporting plate and a second supporting plate of the first machine body and the second machine body are respectively connected with two half surfaces of a flexible display and are relatively rotated and unfolded or closed by taking an arc-shaped base body of a hidden split hinge as an axis. The first guide rail on one side surface of the arc-shaped base body is respectively connected with the first machine body, the second guide rail and the third guide rail of the second machine body; the first arc-shaped guide part and the second arc-shaped guide part of the arc-shaped base body respectively limit the first arc-shaped block of the first rotating part and the second arc-shaped block of the second rotating part; one end of the first linkage piece and one end of the second linkage piece are respectively pivoted with the other side end of the first arc-shaped block and the other side end of the second arc-shaped block, so that when the first arc-shaped block and the second arc-shaped block respectively swing in an arc shape, the first linkage piece and the second linkage piece relatively move in a reverse linear way, and the first machine body and the second machine body are mutually sealed.

Description

Folding device

Technical Field

The present invention relates to a folding device, and more particularly to a folding device with a hidden split hinge.

Background

In a conventional electronic folding device, such as a notebook computer, a display and a base are respectively connected to a side of the display and the base via a single-axis hinge to form a pivot, so that the display can be turned and opened or closed relative to the base. In recent years, electronic folding devices are more convenient to use at least two bodies instead of a conventional display and a conventional base, and then are used together with a flexible display. For example, as shown in a "hidden split hinge" patent application (hereinafter referred to as "the 1 st application") of the application No. CN201810371007.2 of the people' S republic of china, after being folded into an S shape or a Z shape as a whole, the first and second supporting members connected to the split shafts can be closed through a "single virtual rotation center", and an accommodating space is formed inside the split shafts to accommodate a curved region of the flexible display. The applicant has proposed that as shown in a hidden split hinge of the national patent application No. CN109488681A (hereinafter referred to as "2 nd case"), a free swing action similar to a seesaw can be generated during the whole bending and flattening process, and when the whole is bent, a receiving space is provided to receive the curved middle part of the flexible display, so as to stably support the flattened middle part of the flexible display when the whole is flattened.

In cases 1 and 2, no matter the "single virtual center of rotation" or the "non-tilt-plate" structure is adopted, the two bodies are closed to each other, so that the bending portion of the flexible display inside can form a small curvature, and the whole body can be thinned. However, the technical development of the display manufacturers at present is different, and not all the bending portions of the flexible display have a small curvature, or have different bending modes when the bending portions of the flexible display have the small curvature, so that for the flexible displays with different bending modes, it is necessary to have a suitable hinge module to match the bending portions, rather than completely adopting the structural design of the above-mentioned cases 1 and 2, so as to reduce the problem of the flexible display being damaged.

Therefore, the applicant subsequently proposed a "hinge module of a foldable device" (hereinafter referred to as the 3 rd application) of the application No. CN201910587928.7 of the people's republic of china, which mainly includes an arc-shaped seat body having two opposite side surfaces, and a first arc-shaped guide portion and a second arc-shaped guide portion arranged in parallel at an interval 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 assembly is pivoted with one side of the first arc-shaped block of the first rotating piece, and the other end of the first linkage assembly is provided with a first linkage piece; 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, and the second linkage part is connected with the first linkage part in a relatively reverse movement mode. Therefore, the action of the rotating shaft module in the cases 1 and 2 can be simplified, the single virtual rotating center is changed into the double virtual rotating center, and the two rotating pieces synchronously rotate relative to the arc base body to replace the compensation action generated by the structure of the shaftless seesaw; the structure of the non-shaft seesaw and the compensation action generated by the structure are removed, so that the whole thickness is reduced to be beneficial to design, the market demand of light and thin whole volume is achieved to promote 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.

However, since the first linkage assembly of the third embodiment is pivotally connected to one side of the first arc-shaped block of the first rotating member, the other end of the first linkage assembly is pivotally connected to the first linking member; 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 pivoted with a structure of the second linkage component, after the two bodies are mutually closed, the common bending end of the two bodies forms a gap which is roughly triangular, and the flexible display inside the two bodies is exposed. Therefore, dust or moisture can enter through the gap, so that the flexible display is polluted, and 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 above-mentioned advantages of thinning, the inventor has developed the present invention after years of experience and continuous research and development.

Disclosure of Invention

An objective of the present invention is to provide a hidden split hinge, which can remove part of the hinge and simplify the hinge linkage structure of the "first and second linkage assemblies" of the third embodiment, so as to save the manufacturing and assembling cost, and make the two bodies capable of being closed to each other comprehensively, thereby effectively hiding the flexible display and prolonging the service life of the flexible display.

In order to achieve the above object, the folding device provided in the present invention comprises a first body, a second body, a flexible display and a hidden split hinge, wherein a first supporting plate is pivoted in the first body, a second supporting plate is pivoted in the second body, the first supporting plate and the second supporting plate are respectively connected to two half surfaces of the flexible display and respectively form relative rotation in the first body and the second body, the hidden split hinge has an arc base, and the first body and the second body respectively rotate and unfold or close relative to the arc base with a virtual rotation center; the main technical characteristics are as follows: 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 parallel at intervals are arranged between the two side surfaces; at least one side of the arc base body is externally provided with a first guide rail, a side of the corresponding first machine body is internally provided with a second guide rail, a side of the corresponding second machine body is internally provided with a third guide rail, the second guide rail and the third guide rail are respectively connected with the first guide rail and respectively form relative movement with the first guide rail, and then respectively guide and restrain the first supporting plate and the second supporting plate to respectively rotate in limited angles. The hidden split hinge also comprises a first rotating part, a second rotating part, a first connecting part and a second connecting part, wherein the first rotating part comprises a first connecting part and 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 the first 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 part is pivoted with one side end of 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 one side end of 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 implementation, the first guide rail includes two convex columns protruding out of one side surface of the arc-shaped base body, and the corresponding second guide rail and the corresponding third guide rail are respectively formed into an arc-shaped groove in one side surface of the first machine body and an arc-shaped groove in one side surface of the second machine body.

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 and extended to form an extension piece so as to be embedded in the side surface of one end of the adjacent first machine body, and the second guide rail is arranged on the surface of the extension piece to be mutually guided and drawn with a convex column of the first guide rail.

When the guide rail structure is implemented, at least one detachable guide rail structure part is locked on the bottom surface of one end in the second machine body, one end of at least one guide rail structure 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 third 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 guide rail.

When the device is used, a first fixing part is arranged inside the other end of the first machine body, one end of the first 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 used for being connected with a second connecting part of the second rotating part, the other end of the first supporting plate is connected with a first connecting part, one end of the first connecting part is pivoted with the first fixing part, the second guide rail and the first guide rail move relatively and guide and drag mutually, and therefore the first supporting plate rotates in the first machine body in 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 device is implemented, a second fixing part is arranged inside the other end of the second machine body, one end of the second 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 second 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 guide rail and the first guide rail move relatively and mutually guide and restrain, so that the second supporting plate rotates in the second machine body in 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.

When the seat is implemented, a gear is further arranged between the first arc-shaped guide part and the second arc-shaped guide part of the arc-shaped seat body, the first linkage piece and the second linkage piece are respectively provided with a rack, and the first linkage piece and the second linkage piece are respectively meshed with the gear, so that the first linkage piece and the second linkage piece move oppositely.

When the first rotating member swings in an arc shape, the first linkage member is driven to move linearly.

When the second linkage part is implemented, the second linkage part comprises a second sliding block and a second connecting rod, the second sliding block is pivoted with one end of the second connecting rod, and the other end of the second connecting rod is pivoted with one side end of at least one second arc-shaped block of the second rotating part, so that the second linkage part is driven to move linearly when the at least one second arc-shaped block swings in an arc shape.

When the first rotating member rotates, the first rotating member is driven to stably reciprocate linearly along the first rail.

When the second rotating part rotates, the second linkage part is driven to stably reciprocate along the second track.

When the positioning device is used, the arc base body is further provided with a first accommodating space, 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 positioning device is used, the arc base 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 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.

In order to facilitate a more thorough understanding of the present invention, reference will now be made to the following detailed description.

Drawings

Fig. 1 is a perspective view of a foldable device according to the present invention;

fig. 2 is an exploded view of a portion of the components of the folding device of the present invention;

FIG. 3 is an exploded view of the components of the hidden split hinge of the present invention;

FIG. 4 is an exploded view of a portion of the components of the hidden split hinge of the present invention;

fig. 5 is a top view of the folding device of the present invention;

FIG. 6 isbase:Sub>A sectional view taken along line A-A' of FIG. 5;

FIG. 7 is a sectional view taken along line B-B' of FIG. 5;

fig. 8 is a cross-sectional view of the folding device of the present invention when folded;

FIG. 9 is a perspective view of the hidden split hinge of the present invention when folded;

fig. 10 is a perspective view of the folding device of the present invention when folded;

FIG. 11 is an exploded view of the hidden split hinge according to the second embodiment of the present invention;

fig. 12 is a partial exploded view of the hidden split hinge of the second embodiment of the present invention.

Description of the reference numerals

Hidden split hinge 1 arc base 2

First guide rail 21 convex columns 211,212

Second guide 22 and third guide 23

Arc base 24 cover plate 25

Arc convex part 251 first accommodating space 252

The second receiving space 253 is provided with a first arc-shaped guiding part 26

First arc-shaped grooves 261,261' and second arc-shaped guide part 27

Second arcuate slot 271,271' track 28,28',29 '

Gear 291 first track 292

Second rail 293 first rotating member 3

First connecting part 31 first support rods 311,311'

First

arcuate blocks

32,32' first side plate 321

First arc plate 322 first positioning groove 323

First pivot 324 first elastic member 33

First positioning ball 34 second rotating member 4

Second connecting part 41 and second strut 411,411'

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

Second arc 422 second positioning groove 423

Second pivot 424 second elastic member 43

Second positioning ball 44 first linkage member 5

First pivot hole 52 of

racks

51,61

First slider 53 and first link 54

Upper straight grooves 55,65 and lower

straight grooves

56,66

Second linking piece 6 second pivot hole 62

Second slider 63 and second link 64

First body 91 of folding device 9

First support plate 911 guide track structure 912,922

Extension piece 913,923 second body 92

Flexible display 93 with second supporting plate 921

Bases 941,961 of first fastener 94

Notches 943,963 of upper covers 942,962

Pivoting holes 944,964 for first connecting member 95

Pivot 951,971 ramps 952,972

Second attachment member 96 and second connecting member 97

The accommodating space 98.

Detailed Description

Referring to fig. 1 to 8, a folding device 9 according to a first embodiment of the present invention mainly includes a first body 91, a second body 92, a flexible display 93 and a hidden split hinge 1. The first connecting portion 31 of the first rotating member 3 of the hidden-type split hinge 1 is connected to a side edge of an end of a second supporting plate 921 pivoted in the second body 92 (e.g. a base), the second connecting portion 41 of the second rotating member 4 is connected to a side edge of an end of a first supporting plate 911 pivoted in the first body 91 (e.g. a display), and the first supporting plate 91 and the second supporting plate 92 are respectively connected to two halves of the flexible display 93.

The hidden split hinge 1 mainly includes an arc base 2, a first rotating member 3, a second rotating member 4, a first linking member 5 and a second linking member 6. Wherein, at least one side of the arc base 2 is provided with two convex columns (211, 212), and the two convex columns (211, 212) are used as the first guide rail 21; an arc-shaped groove is arranged in one end side face of the corresponding first body 91, the arc-shaped groove is used as a second guide rail 22, another arc-shaped groove is arranged in one end side face of the corresponding second body 92, the another arc-shaped groove is used as a third guide rail 23, the second guide rail 22 is connected with a convex column 212 of the first guide rail 21 and moves relatively, and then the mutual guiding and the restraining are carried out, the third guide rail 23 is connected with another convex column 211 of the first guide rail 21 and moves relatively, and then the mutual guiding and the restraining are carried out, so that when the first rotating part 3 and the second rotating part 4 respectively rotate relatively with the arc base body 2 by a virtual rotation center, the two bodies are relatively overturned on a preset rotation path to unfold or fold the flexible display 93, and after the first body 91 and the second body 92 are folded, the two bodies can be closed mutually in a comprehensive manner; more preferably, the first guide rails 21 are respectively disposed outside the two opposite side surfaces of the arc base 2, the second guide rails 22 are respectively disposed in the two opposite side surfaces of one end of the corresponding first body 91, the third guide rails 23 are respectively disposed in the two opposite side surfaces of one end of the corresponding second body 92, so that the second guide rails 22 are respectively and correspondingly connected to one convex pillar 212 of each first guide rail 21 to form mutual guiding and restraining, and the third guide rails 23 are respectively and correspondingly connected to the other convex pillar 211 of each first guide rail 21 to form mutual guiding and restraining, so that the two bodies are relatively turned over on the predetermined rotation path more stably.

One end of the first body 91 is connected to one end of the arc base 2, and a first fixing member 94 and a first connecting member 95 are disposed inside the other end of the first body 91. The first fixing member 94 includes a base 941 and an upper cover 942, wherein a gap 943 is formed in the middle of the base 941, and when the upper cover 942 covers the base 941, the first fixing member 94 is recessed to form a pivot hole 944 on two opposite sides of the gap 943; the first connecting member 95 is a rectangular plate, one end of which has a pivot 951 and an inclined plane 952 extending from the pivot 951 toward the bottom surface, the first connecting member 95 is locked to the other end of the first supporting plate 911, one end of the first supporting plate 911 is supported by one end of the arc base body 2 to be flush with the top surface of the arc base body 2 for connecting the second connecting portion 41 of the second rotating member 4, and at least one detachable guide rail structure member 912 is locked to the bottom surface of one end in the first body 91, and one end of the at least one guide rail structure member 912 is bent to extend out an extending piece 913 so as to be embedded into a side surface of one end of the adjacent first body 91, one end of the first connecting member 95 is respectively pivoted to two pivot holes 944 of the first fixing member 94 through two opposite shaft ends of the pivot 951, so that one end of the first connecting member 95 is pivoted to the first fixing member 94, and the other end of the first body 91 is pivoted to the other end of the first supporting plate 913, and the second guide rail 22 is disposed on a piece surface of the extending piece to be guided and constrained to a protruding portion 212 of the first guide rail 21, thereby enabling the two first body 91 to smoothly rotate and display a half of the flexible display angle when the first body 91 is turned over.

One end of the second body 92 is connected to the other end of the arc-shaped seat body 2, a second fixing member 96 and a second connecting member 97 are arranged inside the other end of the second body 92, the second fixing member 96 has the same structure as the first fixing member 94, and also comprises a base 961 and an upper cover 962, a gap 963 is formed in the middle position of the base 961 of the second fixing member 96, and when the upper cover 962 of the second fixing member 96 covers the base 961, the second fixing member 96 is also recessed into two opposite sides of the gap 963 to form a pivot hole 964; the second connecting member 97 is also a rectangular plate having a pivot 971 at one end and a bevel 972 extending from the pivot 971 toward the bottom surface; the second connecting member 97 is locked to the other end of the second supporting plate 921, one end of the second supporting plate 921 is supported against the other end of the arc base 2 to be flush with the top surface of the arc base 2, for connecting the first connecting portion 31 of the first rotating member 3, and the detachable at least one guide rail structure member 922 is locked to the bottom surface of one end in the second body 92, and one end of the at least one guide rail structure member 912 is bent to extend out an extending piece 923 to be embedded in one end side surface of the adjacent second body 92, one end of the second connecting member 97 is respectively pivoted to two pivoting holes 964 of the second fixing member 96 through two opposite shaft ends of the pivot 971, so that one end of the second connecting member 97 is pivoted to the first fixing member 96, and the other end of the second body 92 and the other end of the second supporting plate 921 form a pivoting connection, and the third guide rail 23 is disposed on the surface of the extending piece 923 to be guided and constrained with the other protruding column 211 of the first guide rail 21, thereby enabling the second supporting plate 921 to rotate in a limited angle in the second body 92, and enabling the other half surface of the bent flexible display 93 to be smoothly unfolded.

Referring to fig. 3 to 10, the arc base body 2 of the hidden split hinge 1 includes an arc base 24 and a cover plate 25, the arc base 24 has two opposite sides, the arc base 24 between the two sides is provided with a first arc guiding portion 26 and a second arc guiding portion 27 which are arranged in parallel at intervals, the first arc guiding portion 26 includes two first arc grooves (261, 261 ') which are arranged in parallel at intervals, and the second arc guiding portion 27 includes two second arc grooves (271, 271') which are arranged in parallel at intervals. Two parallel tracks (28, 28 ') are arranged between the first arc-shaped guide part 26 and the second arc-shaped guide part 27 of the arc-shaped base 24, and a gear 291 is arranged between the two parallel tracks (28, 28'). The cover plate 25 is covered and connected on the top surface of the arc-shaped base 24, the lower plate surface of the cover plate 25 is provided with four arc-shaped convex parts 251 and two parallel tracks (29, 29 '), the four arc-shaped convex parts 251 are respectively accommodated in two first arc-shaped grooves (261, 261 ') and two second arc-shaped grooves (271, 271 '), a space is formed between each arc-shaped convex part and each arc-shaped groove to form four arc-shaped guide rails for guiding and moving each arc-shaped block; one rail 28 of the curved base 24 and one rail 29 of the cover 25 cooperate to form a first rail 292, and the other rail 28 'of the curved base 24 and the other rail 29' of the cover 25 cooperate to form a second rail 293. Two convex portions 251 of the cover plate 25 are respectively provided with a first receiving space 252, and the other two convex portions 251 are respectively provided with a second receiving space 253.

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 second supporting plate 921 of the second body 92, the other ends of the two first supporting rods (311, 311') respectively extend out of the two parallel first arc-shaped blocks (32, 32 '), and one side end of the first arc-shaped block 32' has a first pivot 324. 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 block 32 is constrained in the arc guide rail of the first arc guiding portion 26 in a manner of swinging relative to the arc, a compression spring is accommodated in the first accommodating space 252 of the arc convex portion 251, the compression spring serves as a first elastic member 33, one end of the first elastic member 33 presses against a first positioning ball 34, the first positioning ball 34 presses against the inner arc surface of the first arc plate 322, and the first positioning ball 34 is guided into and pressed against and positioned in any one of the first positioning grooves 323, so as to position the first rotating member 3 at a predetermined angle position.

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 first supporting plate 911 of the first body 91, the other ends of the two second supporting rods (411, 411') respectively extend to form two parallel second arc-shaped blocks (42, 42 '), and one side end of the second arc-shaped block 42' has a second pivot 424. 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 arc-shaped guide rail of the second arc-shaped guiding portion 27 in a manner of swinging relative to the arc shape, a compression spring is disposed in the second accommodating space 253 of the arc-shaped protruding portion 251, the compression spring serves as a second elastic member 43, one end of the second elastic member 43 presses against a second positioning ball 44, the second positioning ball 44 presses against the inner arc surface of the second arc-shaped plate 422, and the second positioning ball 44 is guided into and pressed against and positioned in any one of the second positioning grooves 423, so as to position the second rotating member 4 at a predetermined angle position.

The top surface and the bottom surface of the first linkage member 5 respectively form an upper straight groove 55 and a lower straight groove 56, the upper straight groove 55 and the lower straight groove 56 respectively accommodate and connect a first rail 292 formed by a rail 28 of the limiting arc-shaped base 24 and a rail 29 of the cover plate 25, so as to clamp the first linkage member 5 and enable the first linkage member 5 to stably reciprocate linearly along the first rail 292; one side end of the first linkage piece 5 is provided with a rack 51, and the rack 51 is meshed with one side of the gear 291; the other side end of the first linkage member 5 has a first pivot hole 52 for pivotally connecting the first pivot 324 of one side end of the first arc-shaped block 32', so that the inner wall surface of the first pivot hole 52 is directly pushed by the first pivot 324, thereby driving the first linkage member 5 to move linearly on the first track 292 when the first rotation member 3 rotates; the first pivot hole 52 vertically penetrates the first linkage member 5 and is formed by being recessed from the other end surface of the first linkage member 5, so that in the process that the first pivot 324 swings along with the arc of the first arc block 32', besides the first pivot 324 pivots, a space for the first pivot 324 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 291. The top surface and the bottom surface of the second linking member 6 respectively form an upper straight groove 65 and a lower straight groove 66, the upper straight groove 65 and the lower straight groove 66 respectively accommodate and connect a second rail 293 composed of another rail 28 'of the limiting arc-shaped base 24 and another rail 29' of the cover plate 25, so as to clamp the second linking member 6 and make the second linking member 6 stably reciprocate along the second rail 293; one side end of the second interlocking member 6 is provided with a rack 61, and the rack 61 is meshed with the other side of the gear 291; the other side end of the second linking member 6 has a second pivot hole 62 for pivotally connecting the second pivot 424 at the other side end of the second arc-shaped block 42', so that the inner wall surface of the second pivot hole 62 is directly pushed by the second pivot 424, thereby driving the second linking member 6 to move linearly on the second track 293 when the first rotating member 3 and the second rotating member 4 rotate in opposite directions; the second pivot hole 62 vertically penetrates through the second linking member 6 and is formed by recessing from the other side end surface of the second linking member 6, so that in the process that the second pivot 424 swings along with the arc of the second arc-shaped block 42', besides the pivot of the second pivot 424, a space for the second pivot 424 to slightly displace can be formed.

Therefore, in the process of the first body 91 being turned over to be closed or completely unfolded relative to the second body 92, 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, so that the first linking member 5 and the second linking member 6 respectively move on the first track 292 and the second track 293 in opposite directions and synchronously with each other with the gear 291 as a rotating axis. The first positioning ball 34 at one end of the first elastic element 33 is guided into and pressed against the first positioning groove 323, and the second positioning ball 44 at one end of the second elastic element 43 is guided into and pressed against the second positioning groove 423, so that the first rotating element 3 and the second rotating element 4 can be synchronously positioned at a preset swing angle; during the relative swinging process of the two first arc-shaped blocks (32, 32 ') and the two second arc-shaped blocks (42, 42'), when the first positioning ball 34 is guided out of the first positioning groove 323 and continuously presses against the relative inner arc surface of the first arc-shaped plate 322, and the second positioning ball 44 is guided out of the second positioning groove 423 and continuously presses against the relative inner arc surface of the second arc-shaped plate 422, friction can be respectively formed to generate torsion, so that the first body 91 and the second body 92 can synchronously and relatively stably rotate, and can synchronously and freely stop at a certain angle during rotation. When the two parallel first support plates 911 and the second support plate 921 are folded, a sufficient accommodating space 98 can be formed for accommodating the bending portion of the flexible display 98 with small curvature.

Please refer to fig. 11 and 12, which illustrate a second embodiment of the folding device 9 according to the present invention, and the difference between the first embodiment and the second embodiment is: the first link 5 includes a first sliding block 53 and a first link 54, one side of the first sliding block 53 has a pivot to pivotally connect with the pivot hole of one end of the first link 54, the pivot hole of the other end of the first link 54 is pivotally connected with the first pivot 324 of one side end of the first arc-shaped block 32 'of the first rotating member 3, so that the first link 54 is pulled by the first pivot 324 to indirectly drive the first sliding block 53 to move, thereby driving the first link 5 to move linearly when the two first arc-shaped blocks (32, 32') swing in the arc-shaped guide rails of the first arc-shaped guiding portion 26 respectively. The second linkage member 6 includes a second sliding block 63 and a second connecting rod 64, one side end of the second sliding block 63 has a pivot to pivotally connect with the pivot hole at one end of the second connecting rod 64, the pivot hole at the other end of the second connecting rod 64 is pivotally connected with the second pivot 424 at one side end of the second arc-shaped block 42 'of the second rotating member 4, so that the second connecting rod 64 is pulled by the second pivot 424, and the second sliding block 63 is indirectly driven to move, thereby driving the second linkage member 6 to move linearly when the two second arc-shaped blocks (42, 42') swing in an arc-shaped guide rail of the second arc-shaped guide portion 27 in an arc-shaped manner; therefore, in the process of synchronous movement, the linkage action of the two first arc-shaped blocks (32, 32 ') and the first linkage part 5 and the linkage action of the two second arc-shaped blocks (42, 42') and the second linkage part 6 are smooth.

Therefore, the invention has the following advantages:

1. the present invention not only can effectively remove part of the components and simplify the rotating shaft linkage structure of the first and second linkage assemblies of the prior art 3, so as to reduce the production cost of the components and the manufacturing and assembling processes, but also can ensure that the two machine bodies can be closed in a comprehensive manner when being relatively turned over, so as to effectively hide the flexible display, and ensure that the two half parts of the flexible display can be smoothly unfolded, so as to prolong the service life of the flexible display.

2. When the two rotating parts are folded relatively, the arc convex part of the arc seat body is correspondingly jointed with the inner and outer planes of the arc plate of the rotating part through the combination of the elastic part and the positioning balls, or the positioning balls are positioned in the positioning grooves, so that the two machine bodies can be freely stopped at a certain angle when rotating relatively, and an effective or more remarkable positioning effect is generated, so that the two machine bodies can be more stably positioned at the certain angle, and the two machine bodies are convenient to use.

3. The two machine bodies are respectively provided with at least one guide rail structural part as a detachable component, so that the two machine bodies are convenient to replace, the second guide rail and the third guide rail can be matched with machine bodies with different sizes and structures or matched with the first guide rail of the arc-shaped base body with different types, the application range is favorably enlarged, and the flexibility in structural design and use is provided.

Although the present invention has been described with reference to specific embodiments, it should be understood that the invention is not limited to the precise embodiments disclosed, and that various changes and modifications can be effected therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A folding device comprises a first machine body, a second machine body, a flexible display and a hidden split hinge, wherein a first supporting plate is pivoted in the first machine body, a second supporting plate is pivoted in the second machine body, the first supporting plate and the second supporting plate are respectively connected with two half surfaces of the flexible display and respectively form relative rotation in the first machine body and the second machine body, the hidden split hinge is provided with an arc-shaped base body, and the first machine body and the second machine body respectively rotate and unfold or close relative to the arc-shaped base body by a virtual rotation center; the method is characterized in that:

the arc base body is provided with two opposite side surfaces, and a first arc guide part and a second arc guide part which are parallel at intervals are arranged between the two side surfaces; at least one side surface of the arc-shaped base body is externally provided with a first guide rail, a corresponding side surface of the first machine body is internally provided with a second guide rail, a corresponding side surface of the second machine body is internally provided with a third guide rail, and the second guide rail and the third guide rail are respectively connected with the first guide rail and respectively form relative movement with the first guide rail, so as to respectively guide and restrain the first supporting plate and the second supporting plate from respectively rotating in a limited angle;

this hidden split hinge still includes:

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

2. The folding apparatus of claim 1, wherein the first guide rail comprises two protruding posts protruding from a side surface of the arc-shaped housing, and the corresponding second guide rail and the third guide rail are an arc-shaped groove formed in a side surface of one end of the first housing and an arc-shaped groove formed in an end surface of the second housing.

3. The folding device of claim 2, wherein at least one detachable rail structure is locked to a bottom surface of one end of the first housing, and an extension piece is bent and extended from one end of the at least one rail structure to be engaged with an adjacent side surface of one end of the first housing, such that the second rail is disposed on a surface of the extension piece to be guided and restrained with a protrusion of the first rail.

4. The folding apparatus according to claim 2, wherein at least one rail structure member is detachably locked to a bottom surface of one end of the second housing, and an extension piece is bent and extended from one end of the at least one rail structure member to be engaged with an end surface of the adjacent second housing, such that 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.

5. The folding apparatus according to claim 1, wherein a first fixing member is disposed inside the other end of the first body, one end of the first supporting plate is supported by one end of the arc-shaped base body to be flush with the top surface thereof for connecting to the second connecting portion of the second rotating member, the other end of the first 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 guiding rail and the first guiding rail move relative to each other and are guided and restrained with each other, thereby allowing the first supporting plate to rotate within the first body by a limited angle.

6. The folding apparatus of claim 5, 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.

7. The folding apparatus according to claim 5, wherein a second fixing member is disposed inside the other end of the second housing, one end of the second supporting plate is supported by the other end of the arc-shaped housing to be flush with the top surface thereof for connecting to the first connecting portion of the first rotating member, the other end of the second 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 guiding rail and the first guiding rail move relative to each other and are guided and restrained with each other, thereby allowing the second supporting plate to rotate within the second housing at a limited angle.

8. The folding device of claim 7, wherein the second fixing member comprises a base and a top cover, a gap is formed in the middle of the base, and two 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.

9. The folding device 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 seat, the first linking member and the second linking member respectively have a rack, and the first linking member and the second linking member respectively engage with the gear, so as to move the first linking member and the second linking member in opposite directions.

10. The folding device of claim 9, wherein the first linkage member includes a first slider and a first link, the first slider is pivotally connected to one end of the first link, and the other end of the first link is pivotally connected to one side end of the at least one first arc-shaped block of the first rotation member, so as to drive the first linkage member to move linearly when the at least one first arc-shaped block swings arcuately.

11. The folding apparatus as claimed in claim 10, wherein the second linkage member includes a second slider and a second link, the second slider is pivotally connected to one end of the second link, and the other end of the second link is pivotally connected to one side end of the at least one second arc-shaped block of the second rotating member, so as to drive the second linkage member to move linearly when the at least one second arc-shaped block swings in an arc shape.

12. The folding device of claim 1, wherein the curved seat has a first track for holding the first linking member, and one side of the first linking member has a first pivot hole for pivoting a first pivot of one side of the at least one first curved block, so as to drive the first linking member to move linearly and reciprocally along the first track when the first linking member rotates.

13. The folding apparatus as claimed in claim 12, wherein the curved seat has a second track for holding the second linking member, and a side of the second linking member has a second pivot hole for pivotally connecting a second pivot shaft of one side of the at least one second curved block, so as to drive the second linking member to stably reciprocate linearly along the second track when the second rotating member rotates.

14. The folding device of claim 1, wherein the curved seat 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 curved block to position the first rotating member at a predetermined angle.

15. The folding device of claim 14, wherein the first curved piece is a curved frame comprising two first side plates and a first curved plate connecting the two first side plates, and at least one first positioning slot is formed on an inner curved surface of the first curved plate for positioning the first positioning ball.

16. The folding device of claim 1, wherein the curved seat 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 curved block to position the second rotating member at a predetermined angular position.

17. The folding device of claim 16, wherein the second arc-shaped block is an arc-shaped frame body comprising two second side plates and a second arc-shaped plate respectively connecting the two second side plates, and the inner arc surface of the second arc-shaped plate is provided with at least one second positioning groove for positioning the second positioning ball.