CN209861329U

CN209861329U - Hinge device, shell and electronic device

Info

Publication number: CN209861329U
Application number: CN201821660898.5U
Authority: CN
Inventors: 王正熙; 杨松龄; 陈松亚; 廖乐
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2018-03-12
Filing date: 2018-10-11
Publication date: 2019-12-27
Anticipated expiration: 2028-10-11
Also published as: CN112005186A; WO2019174223A1; CN112154496A; WO2019174224A1; CN209414383U

Abstract

The utility model provides an electronic device, including flexible screen and casing, the casing includes first framework, second framework and hinge means, hinge means connect in first framework with between the second framework for support set up the flexible screen on the casing, hinge means include the hinge main part and set up in positioning mechanism in the hinge main part, positioning mechanism is used for keeping hinge means's form. The utility model discloses still provide one electron device's casing and hinge means.

Description

Hinge device, shell and electronic device

Technical Field

The utility model relates to a flexible screen supports the field, especially relates to a support flexible screen hinge means, be provided with hinge means's casing, and be provided with the electron device of casing.

Background

With the development of flexible screens, consumers have increasingly diversified and personalized requirements for display modes, display effects and the like of display devices. Compared with the traditional display device, the flexible display screen has the advantages of being bendable, transparent, curved, flexible, stretchable and the like, and is widely favored by consumers. The conventional electronic device with a foldable display screen generally uses a hinge to support and bend the flexible screen. The hinge is generally made up of several links connected together. However, the links are movably connected, and the hinge cannot maintain a specific shape, is easily deformed, and is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can keep the hinge means of form, be provided with hinge means's casing, and be provided with the electron device of casing.

The utility model provides a pair of hinge means is located between the first framework and the second framework of casing for support sets up the flexible screen on the casing, hinge means include the hinge main part and set up in positioning mechanism in the hinge main part, positioning mechanism is used for keeping hinge means's form.

The utility model also provides a casing, including first framework, second framework and hinge means, hinge means connect in first framework with between the second framework, hinge means is used for supporting the flexible screen that sets up on the casing, hinge means include the hinge main part and set up in positioning mechanism in the hinge main part, positioning mechanism is used for keeping hinge means's form.

The utility model also provides an electronic device, including flexible screen and casing, the casing includes first framework, second framework and hinge means, hinge means connect in first framework with between the second framework for support set up the flexible screen on the casing, hinge means include the hinge main part and set up in positioning mechanism in the hinge main part, positioning mechanism is used for keeping hinge means's form.

The utility model discloses electron device hinge means include the hinge main part and set up in positioning mechanism in the hinge main part, positioning mechanism is used for the location hinge means is the state of buckling or expandes the state. Therefore, the positioning mechanism can position the hinge device to keep a bending state or a spreading state, so that the electronic device can automatically keep the unfolding state or the bending state.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

Fig. 2 is a schematic perspective view of the electronic device in fig. 1 from another perspective.

Fig. 3 is a perspective exploded view of the electronic device in fig. 1.

Fig. 4 is an exploded perspective view of the electronic device in fig. 2.

Fig. 5 is an exploded perspective view of the hinge device of the electronic device of fig. 4.

Fig. 6 is an exploded perspective view of another perspective of the hinge device of the electronic device in fig. 5.

Fig. 7 is an enlarged view of a VII portion in fig. 6.

Fig. 8 is an enlarged view of a portion VIII in fig. 6.

Fig. 9 is an enlarged view of one of the retainers of fig. 7.

Fig. 10 is a partially enlarged schematic view of the hinge device of fig. 5.

Fig. 11 is a sectional view taken along line XI-XI in fig. 1.

Fig. 12 is a cross-sectional view taken along line XII-XII in fig. 1.

Fig. 13 is an enlarged view taken along XIII in fig. 12.

FIG. 14 is a cross-sectional view taken along line XIV-XIV in FIG. 1.

Fig. 15 is a perspective view of the electronic device in fig. 1 in a bent state.

Fig. 16 is a cross-sectional view taken along line XVI-XVI in fig. 15.

Fig. 17 is a cross-sectional view taken along line XVII-XVII in fig. 15.

Fig. 18 is a sectional view taken along line XVIII-XVIII in fig. 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

Referring to fig. 1 to 4, fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present invention; FIG. 2 is a schematic view of the electronic device in FIG. 1; FIG. 3 is an exploded perspective view of the electronic device of FIG. 1; fig. 4 is an exploded perspective view of the electronic device in fig. 2. The electronic device 100 of one embodiment of the present invention includes a housing 20 and a flexible screen 30 disposed on the housing 20. The housing 20 includes a first frame 21, a second frame 23, and a hinge device 25 connected between the first frame 21 and the second frame 23. The flexible screen 30 is provided on the first frame 21, the second frame 23, and the hinge device 25. The flexible screen 30 is provided with a bendable region 31 corresponding to the hinge means 25, and two non-bendable regions 33 connected to opposite sides of the bendable region 31. The hinge device 25 is configured to be supported by the flexible screen 30, the hinge device 25 includes a hinge main body 250, the hinge main body 250 is located between the first frame 21 and the second frame 23, one side of the hinge main body 250 is slidably connected to the first frame 21, and the other side of the hinge main body 250 opposite to the first side is connected to the second frame 23. At least one elastic member 26 is disposed between the first frame body 21 and the hinge main body 250, and the at least one elastic member 26 pushes the first frame body 21 away from the hinge main body 250, so that the region of the flexible screen 30 corresponding to the hinge main body 250 is always kept in the unfolded state, thereby preventing the flexible screen 30 from separating from the hinge main body 250 and arching. Due to the sliding connection between the first frame body 21 and the hinge main body 250 and the elastic member 26 arranged between the first frame body 21 and the hinge main body 250, the tolerance of the hinge main body 250 in the direction perpendicular to the bending axis thereof can be compensated, that is, the length of the hinge main body 250 extending in the direction perpendicular to the bending axis thereof can be automatically adjusted, so as to avoid the flexible screen from being damaged.

It should be understood that the present invention is not limited to the hinge being a virtual axis solution, but can also be other various solutions, such as an active compensation solution, a passive compensation solution, etc.

The bending axis is not limited to a solid axis, but may be a non-solid axis, i.e., a virtual axis, as long as the hinge body 250 can be bent around the axis.

In this embodiment, the bending axis of the hinge body 250 is a virtual axis.

In this embodiment, the electronic device 100 is a mobile phone. It is understood that in other embodiments, the electronic device 100 may be, but is not limited to, a radiotelephone, a pager, a Web browser, a notepad, a calendar, and/or a Global Positioning System (GPS) receiver PDA.

The utility model discloses one side of hinge main part 250 of hinge device 25 of electronic device 100 connect with sliding in first framework 21, the opposite side that hinge main part 250 is relative connect in second framework 23, and first framework 21 with elasticity is provided with elastic component 26 with propping to holding between the hinge main part 250. Therefore, the accumulated tolerance of the entire length of the hinge main body 250 in the direction perpendicular to the bending axis thereof can be compensated by the sliding of one side of the hinge main body 250 with respect to the first frame body 21, i.e., the sliding of the first frame body 21 can absorb the accumulated tolerance of the entire length; in addition, the elastic member 26 always pushes the housing 20 away from the hinge main body 250, so that the flexible screen 30 on the housing 20 always keeps the unfolded state, and thus the flexible screen 30 can be prevented from being separated from the hinge main body 250 and arching, and the flexible screen is prevented from being damaged.

In this embodiment, one side of the hinge body 250 parallel to the bending axis thereof is slidably connected to the first frame 21 through the elastic member 26, and the other side of the hinge body 250 parallel to the bending axis thereof is fixedly connected to the second frame 23, that is, the hinge body 250 is slidable with respect to the first frame 21.

In other embodiments, one side of the hinge body 250 parallel to the bending axis thereof is slidably connected to the second frame 23 through the elastic member 26, and the other side of the hinge body 250 parallel to the bending axis thereof is slidably connected to the first frame 21 through the elastic member 26, that is, the hinge body 250 is slidable relative to the first frame 21 and the second frame 23.

The first frame 21 is provided with a first connecting portion 212 on a side adjacent to the hinge device 25, and the first connecting portion 212 is used for connecting a side of the hinge main body 250 parallel to the bending axis. Specifically, the first connecting portion 212 includes connecting strips 2121 protruding from opposite ends of a side of the first frame 21 adjacent to the hinge device 25, and a guide plate 2125 connected between the two connecting strips 2121. Each connecting bar 2121 extends along a direction perpendicular to the bending axis of the hinge body 250, and the guide-sliding plate 2125 is adjacent to the front surface of the first frame 21, so that a receiving groove 2126 is defined between the guide-sliding plate 2125 and the two connecting bars 2121 and the first frame 21. A sliding groove 2122 is formed along the length direction of the connecting strip 2121 on a side surface of each connecting strip 2121 facing the receiving groove 2126, and the sliding groove 2122 is communicated with the receiving groove 2126. At least one receiving groove 2127 is formed on the back surface of the sliding guide 2125 along the extending direction of the sliding groove 2122, and the receiving groove 2127 is communicated with the receiving groove 2126. A positioning post 214 corresponding to the receiving groove 2127 is protruded from a side surface of the first frame 21 facing the receiving groove 2126. The front surface of the first frame 21 is provided with a mounting groove 215 for mounting the flexible screen 30.

In this embodiment, the back surface of the guide sliding plate 2125 is provided with two parallel and spaced receiving grooves 2127, and two positioning posts 214 corresponding to the two receiving grooves 2127 are protruded from the side surface of the first frame 21 facing the receiving groove 2126.

The second frame 23 is provided with a second connecting portion 232 at a side adjacent to the hinge device 25, and the second connecting portion 232 is used for connecting the other side of the hinge main body 250 parallel to the bending axis. Specifically, the second connecting portion 232 includes two connecting bars 2321 respectively protruding from two opposite ends of one side of the second frame 23 adjacent to the hinge device 25, and a connecting plate 2325 connected between the two connecting bars 2321. Each connecting bar 2321 extends in a direction perpendicular to the bending axis of the hinge body 250, and the connecting plate 2325 is adjacent to the front surface of the second frame body 23, so that a connecting slot 2326 is defined between the connecting plate 2325 and the two connecting bars 2321 and the second frame body 23. The connecting plate 2325 is provided with a plurality of connecting holes 2327, and the front surface of the second frame 23 is provided with an installation groove 235 for installing the flexible screen 30. The utility model provides a openly indicate with the play plain noodles of flexible screen 30 faces the same face, the back indicate with the face opposite in the play plain noodles orientation of flexible screen 30.

Referring to fig. 5 to 8, fig. 5 is an exploded perspective view of the hinge device of the electronic device in fig. 4; FIG. 6 is an exploded perspective view of another perspective of the hinge assembly of the electronic device of FIG. 5; fig. 7 is an enlarged view of a VII portion in fig. 6; fig. 8 is an enlarged view of a portion VIII in fig. 6. Hinge assembly 25 still includes two chain link end cover mechanisms 255, two elastic component 26 and a positioning mechanism 27, two chain link end cover mechanisms 255 set up respectively in the relative both ends of hinge main part 250, two elastic component 26 set up in hinge main part 250 with between the first framework 21, positioning mechanism 27 is used for keeping hinge assembly 100's form, promptly, positioning mechanism 27 is used for keeping hinge assembly 100 is the state of buckling or expandes, and convenience of customers uses. The positioning mechanism 27 includes a plurality of elastic positioning members 28 and a plurality of magnetic members 29.

In this embodiment, each elastic member 26 is a spring.

In other embodiments, the resilient member 26 may be a resilient rubber or a resilient plastic, or the like.

The hinge body 250 includes a plurality of links hinged to each other, and the front surface of each link is used to support the flexible panel 30. Specifically, the plurality of links includes at least a first link 251, at least a second link 252, a third link 253, and a fourth link 254. One side of the third link 253 is slidably connected to the first frame 21, and one side of the fourth link 254 is connected to the second frame 23. First link 251 is disposed between third link 253 and fourth link 254, second link 252 is disposed between third link 253 and first link 251 or between fourth link 254 and first link 251, and adjacent links are hinged to each other. In one embodiment, at least one of the second links 252 is hinged to a side of the first link 251, the third link 253 is hinged to the second link 252 or to a side of the first link 251 remote from the second link 252, and the fourth link 253 is hinged to the second link 252 or to a side of the first link 251 remote from the second link 252.

In this embodiment, the hinge body 250 includes one first link 251, two second links 252, one third link 253 and one fourth link 254, the two second links 252 are respectively hinged to two opposite sides of the first link 251, the third link 253 is hinged to one side of one second link 252 away from the first link 252, and the fourth link 254 is hinged to one side of the other second link 252 away from the first link 252.

Specifically, the first link 251 includes a strip 2510 along a bending axis parallel to the hinge body 250, and the strip 2510 includes a front 2511 in the shape of a circular arc, a back, two opposite side 2512 surfaces, and two opposite end surfaces 2513. The front surface 2511 and the two side surfaces 2512 are connected by two first guide sliding surfaces 2514 which are opposite, each first guide sliding surface 2514 is an arc surface which is recessed towards the strip body 2510, and the two first guide sliding surfaces 2514 are symmetrical along the central line of the front surface 2511. Each first guiding sliding surface 2514 is provided with a receiving hole 2515 adjacent to the two end surfaces 2513. Each end surface 2513 is provided with a circular arc-shaped limiting groove 2517 adjacent to two first guide sliding surfaces 2514, the circular arc of each limiting groove 2517 is parallel to the circular arc of the adjacent first guide sliding surface 2514, that is, the circular arc center of each limiting groove 2517 coincides with the circular arc center of the adjacent first guide sliding surface 2514. Each end surface 2513 is further provided with a connecting hole 2518, and the connecting hole 2518 is located between the two limiting grooves 2517. Fixing grooves 2501 are respectively formed in two opposite sides of the first chain link 251, specifically, fixing grooves 2501 are respectively formed at the intersection of the back surface of the first chain link 251 and the two side surfaces 2512, and each fixing groove 2501 extends along the length direction of the first chain link 251. Specifically, each retaining slot 2501 is located at the intersection of the middle of the back face of the first link 251 and the side face 2512.

Each second link 252 includes a bar 2520 extending along a bending axis parallel to the hinge body 250, the bar 2520 including a front surface 2521 in the shape of a circular arc, a back surface, two opposite side surfaces 2522, and two opposite end surfaces 2523. A circular arc-shaped second sliding guide surface 2524 is disposed between the front surface 2521 and one side surface 2522, and the second sliding guide surface 2524 is recessed toward the strip 2520. The second sliding guide surface 2524 is provided with a receiving hole 2525 adjacent to the two end surfaces 2523. A sliding guide strip 2526 is arranged at the intersection of the front surface 2521 and the other side surface 2522 in an outward protruding manner, the sliding guide strip 2526 extends along the length direction of the strip body 2520, an arc surface 2527 is arranged on one side of the sliding guide strip 2526, which faces away from the front surface 2521, and the arc surface 2527 can be attached to the first sliding guide surface 2514 in a sliding manner, that is, the radian of the arc surface 2527 is the same as that of the first sliding guide surface 2514. Each end surface 2523 is provided with an arc-shaped limiting groove 2528 adjacent to the second sliding guide surface 2524, and an arc of the limiting groove 2528 is parallel to an arc of the second sliding guide surface 2524, that is, the arc centers of the limiting groove 2528 and the second sliding guide surface 2524 are coincident. Each end surface 2523 is further provided with a connecting hole 2529, and specifically, the connecting hole 2529 is located in the middle of the end surface 2523. A fixing groove 2503 is formed at a side of each second link 252 facing the first link 251, specifically, a fixing groove 2503 is formed at an intersection of a back surface of each second link 252 and two side surfaces 2522, each fixing groove 2503 extends along a length direction of the second link 252, and specifically, each fixing groove 2503 is located at an intersection of a middle portion of the back surface of the second link 252 and the side surfaces 2522.

Referring to fig. 5 and 13 together, fig. 12 is a cross-sectional view taken along line XII-XII in fig. 1; fig. 13 is an enlarged view taken along XIII in fig. 12. The arc surface 2527 of each second link 252 is provided with a first positioning hole 2502 and a second positioning hole 2504 spaced from each other at a position adjacent to the two end surfaces 2523, and the first positioning hole 2502 and the second positioning hole 2054 correspond to the receiving hole 2515 of the first link 251. The first positioning hole 2502 and the second positioning hole 2504 are located on the same arc line of the arc surface 2527, the first positioning hole 2502 is far away from the strip 2520, and the second positioning hole 2504 is close to the strip 2520.

The third link 253 includes a strip 2530 extending parallel to the bending axis of the hinge body 250, and the strip 2530 includes a front surface 2531 having a circular arc shape, a rear surface, two opposite side surfaces 2532, and two opposite end surfaces 2533. The crossing of front 2531 and one of them side 2532 is equipped with a draw runner 2534 to the evagination, draw runner 2534 follows the length direction of the strip body 2530 extends, draw runner 2534 sets up arc surface 2535 back to one side of front 2531, arc surface 2535 can laminate in on the second draw runner 2524, promptly, the circular arc of arc surface 2535 with the circular arc of second draw runner 2524 is the same. Each end surface 2533 is further provided with a connecting hole 2536, and specifically, the connecting hole 2536 is located in the middle of the end surface 2533. The strip 2530 is provided with a mounting portion on a side 2532 facing away from the slide bar 2534, the mounting portion being slidably connected to the first connection portion 212 of the first frame 21. The mounting portion includes a sliding plate 2537 protruding from the side surface 2532, and at least one protrusion 2538 protruding from the sliding plate 2537. Two opposite ends of the sliding plate 2537 are slidably inserted into the sliding grooves 2122 of the two connecting strips 2121 of the first frame 21, and the at least one protrusion 2538 corresponds to the positioning column 214 of the first frame 21. A fixing groove 2505 is formed at the intersection of the back surface of the third link 253 and the side surface 2532 on which the sliding guide strip 2534 is protruded, and the fixing groove 2505 extends along the length direction of the third link 253. Specifically, the fixing groove 2505 is located at the intersection of the middle portion of the back surface of the third link 253 and the side surface 2532.

The arc surface 2535 of the third link 253 is provided with a first positioning hole 2502 and a second positioning hole 2504 adjacent to the two end surfaces 2533, which are spaced from each other, respectively, and the first positioning hole 2502 and the second positioning hole 2054 correspond to the receiving hole 2525 of the second link 252. The first positioning hole 2502 and the second positioning hole 2504 are located on the same arc line of the arc surface 2535, the first positioning hole 2502 is far away from the strip body 2530, and the second positioning hole 2504 is close to the strip body 2530.

In this embodiment, the sliding plate 2537 is provided with two spaced protrusions 2538, and the two protrusions 2538 correspond to the two positioning posts 214 on the first frame 21.

The fourth link 254 includes a strip 2540 extending parallel to the bending axis of the hinge body 250, and the strip 2540 includes a front surface 2541 in the shape of a circular arc, a rear surface, two opposite side surfaces 2542, and two opposite end surfaces 2543. A sliding guide strip 2544 is arranged between the front surface 2541 and one side surface 2542 in an outward protruding manner, the sliding guide strip 2544 extends along the length direction of the strip body 2540, the sliding guide strip 2544 faces back to one side of the front surface 2541 and is provided with an arc surface 2545, the arc surface 2545 can be attached to the second sliding guide surface 2524, that is, the arc of the arc surface 2545 is the same as the arc of the second sliding guide surface 2524. Each end surface 2543 is further provided with a connecting hole 2546, and specifically, the connecting hole 2546 is located in the middle of the end surface 2543. The strip 2540 is back to the side 2542 of the slide bar 2544 and is provided with a mounting portion connected to the second connecting portion 232 of the second frame 23. The installation department is including protruding locating a mounting panel 2547 of side 2542, a plurality of connecting holes 2548 have been seted up on the mounting panel 2547. A fixing groove 2506 is formed at the intersection of the back surface of the fourth link 254 and the side surface 2542 on which the slide guide bar 2544 is disposed, and the fixing groove 2506 extends along the length direction of the fourth link 254. Specifically, the fixing groove 2506 is located at the intersection of the middle portion of the back surface of the fourth link 254 and the side surface 2542.

The arc surface 2545 of the fourth link 254 is provided with a first positioning hole 2502 and a second positioning hole 2504 adjacent to the two end surfaces 2543, which are spaced from each other, respectively, and the first positioning hole 2502 and the second positioning hole 2054 correspond to the receiving hole 2525 of the second link 252. The first positioning hole 2502 and the second positioning hole 2504 are located on the same arc line of the arc surface 2545, the first positioning hole 2502 is far away from the strip body 2540, and the second positioning hole 2504 is close to the strip body 2540.

Each link end cap mechanism 255 includes at least one first link end cap 256, at least one second link end cap 257, and two third link end caps 258. At least one of said first link end caps 256 is disposed on one of the end faces 2513 of at least one of said first links 251; at least one of said second link end cap members 257 is disposed on one of the end surfaces 2523 of at least one of said second links 252 and is rotatably connected to first link end cap member 256; two of the third link end caps 258 are disposed on one of the end surfaces 2533 of the third link 253 and one of the end surfaces 2543 of the fourth link 254, respectively, wherein one of the third link end caps 258 is rotatably connected to the first link end cap 256 or the second link end cap 257, and the other third link end cap 258 is rotatably connected to the first link end cap 256 or the second link end cap 257.

As shown in fig. 7 and 8, in the present embodiment, the hinge device 25 includes two link end cap mechanisms 255, and each link end cap mechanism 255 includes one first link end cap 256, two second link end caps 257, and two third link end caps 258. The first link end cap 256 can be fixed to an end surface 2513 of the first link 251, the two second link end caps 257 can be fixed to end surfaces 2523 of the same ends of the two second links 252, respectively, and the two third link end caps 258 can be fixed to an end surface 2533 of the third link 253 and an end surface 2543 of the fourth link 254, respectively. Adjacent link end caps are hingedly connected to one another.

Specifically, first link end cap 256 includes a cover plate 2560, and the shape and size of the end surface of cover plate 2560 facing first link 251 are the same as the shape and size of end surface 2513 of first link 251. The cover 2560 includes a front 2561, a back 2562, two opposite sides 2562, and two opposite end 2563. The front surface 2561 and the two opposite side surfaces 2562 are connected by two opposite slide guide surfaces 2564, each slide guide surface 2564 is an arc surface, and the arc surface is the same as the arc of the corresponding first slide guide surface 2514 on the first chain link 251. The two glide surfaces 2564 are symmetrical about a center line of the front surface 2561. The end surface 2563 of the cover plate 2560 facing the first link 251 and adjacent to the two slide guiding surfaces 2564 are respectively provided with a circular arc-shaped slide guiding slot 2567, the circular arc of each slide guiding slot 2567 is parallel to the circular arc of the adjacent slide guiding surface 2564, that is, each slide guiding slot 2567 coincides with the center of the circular arc of the adjacent slide guiding surface 2564. Each guide slot 2567 extends through an adjacent guide surface 2564. The end surface 2563 of the cover plate 2560 facing away from the first link 251 is provided with a countersunk hole 2568, the countersunk hole 2568 penetrates through the cover plate 2560, and specifically, the countersunk hole 2568 is located between the two slide guide slots 2567.

Each second link end cap member 257 includes a cover plate 2570, the shape and size of the end surface of the cover plate 2570 facing the second link 252 is similar to the shape and size of the end surface 2523 of the second link 252. The cover plate 2570 includes a front surface 2571, a back surface, two opposite side surfaces 2572, and two opposite end surfaces 2573. The intersection of the front surface 2571 and one of the side surfaces 2572 is provided with a circular arc-shaped sliding guide surface 2574, and the circular arc of the sliding guide surface 2574 is the same as the circular arc of the corresponding second sliding guide surface 2524 on the second link 252. The crossing department of front 2571 and another side 2572 is equipped with a slip strip 2576 to the evagination, slip strip 2576 dorsad the one side of front 2571 sets up arc surface 2577, arc surface 2577 can laminate in on the slip surface 2564 of leading of first chain link end cover piece 256, promptly, the circular arc of arc surface 2577 with the circular arc of leading slip surface 2564 is the same. The arc surface 2577 is gone up to the evagination and is equipped with stopper 2575 of L shape, stopper 2575 is located including the projection arc surface 2577's connecting portion, and certainly the terminal orientation of connecting portion the spacing portion that one side of second chain link 252 extended, connecting portion can accept with sliding in the guide slot 2567 of first chain link end cover piece 256, spacing portion can accept with sliding in the spacing groove 2517 of first chain link 251. The end surface 2573 of the cover plate 2570 facing the second link 252, which is adjacent to the arc surface 2574, is provided with an arc-shaped guide slot 2578, the arc of the guide slot 2578 is parallel to the arc of the guide sliding surface 2574, that is, the arc centers of the guide slot 2578 and the guide sliding surface 2574 are overlapped, and the guide slot 2578 penetrates through the guide sliding surface 2574. A countersunk hole 2579 is formed in an end surface 2573 of the cover plate 2570 facing away from the second link 252, and the countersunk hole 2579 penetrates through the cover plate 2570.

Each third link end cap 258 includes a cover plate 2580, and the cover plate 2580 includes a front surface 2581, a back surface, two opposing side surfaces 2582, and two opposing end surfaces 2583. A sliding guide strip 2586 is arranged at the intersection of the front surface 2581 and one side surface 2582 of the front surface 2581 in an outward protruding manner, an arc surface 2587 is arranged on one side of the sliding guide strip 2586 back to the front surface 2581, the arc surface 2587 can be attached to the sliding guide surface 2574 of the second link end cover member 257, that is, the arc of the arc surface 2587 is the same as the arc of the sliding guide surface 2574. The last evagination of arc surface 2587 is equipped with stopper 2585 of L shape, stopper 2585 is located including protruding arc surface 2587's connecting portion, and certainly the terminal orientation of connecting portion the spacing portion that hinge main part 250 extends, connecting portion can receive slidingly accept in the spout 2578 of second chain link end cover member 257, spacing portion can slidingly accept in the spacing groove 2528 of second chain link 252. The cover 2580 has a counter bore 2589 on an end surface 2583 facing away from the hinge body 250, and the counter bore 2589 penetrates through the cover 2580.

Referring to fig. 9, fig. 9 is an enlarged view of the positioning element in fig. 7. These positioning members 28 are respectively disposed between the chain links of the hinge body 250, that is, a positioning member 28 is disposed between every two adjacent chain links, and these positioning members 28 are used for positioning the hinge device in a bent state or an unfolded state. Specifically, the positioning members 28 are slidably received in the receiving holes 2515 of the first links 251 and the receiving holes 2525 of the second links 252, respectively. The positioning element 28 has elasticity, and when the positioning element 28 is pressed, the positioning element 28 retracts into the receiving holes 2515 and 2525, and when the pressing of the positioning element 28 is released, the positioning element 28 elastically resets. The positioning member 28 includes a positioning rod 282 slidably received in the receiving holes 2515 and 2525, and an elastic member 284 sleeved on the positioning rod 282. The elastic member 284 elastically abuts between the positioning rod 282 and the back surface of the corresponding receiving hole 2515, 2525, and the elastic member 284 forces the positioning rod 282 to move outward and extend out of the corresponding receiving hole 2515, 2525. One end of the positioning rod 282 away from the elastic element 284 is provided with a spherical convex hull 285, and the elastic element 284 forces the positioning rod 282 to move outwards so that the convex hull 285 extends out of the corresponding receiving holes 2515 and 2525. When the convex hulls 285 of the positioning pieces 28 are respectively clamped into the corresponding first positioning holes 2502, the area of the hinge main body 250 is always kept in the unfolded state, so that the hinge main body 250 is automatically kept in the unfolded state; when the convex hulls 285 of the positioning member 28 are respectively snapped into the corresponding second positioning holes 2504, the region of the hinge main body 250 is always kept in the bent state, so that the hinge main body 250 is automatically kept in the bent state.

In this embodiment, the elastic member 284 is a spring.

In other embodiments, each positioning element 28 is a resilient positioning bead, the resilient positioning bead can be respectively clamped in the corresponding receiving hole 2515, 2525, and the bead body of the resilient positioning bead extends out of the corresponding receiving hole 2515, 2525.

In other embodiments, each first guiding sliding surface 2514 of the first link 251 is provided with a first positioning hole and a second positioning hole, which are spaced from each other, respectively, and the first positioning hole and the second positioning hole are located on the same arc line of the first guiding sliding surface 2514, the first positioning hole is adjacent to one side of the front surface 2511, and the second positioning hole is far away from one side of the front surface 2511. An elastic positioning element 28 is disposed on the arc surface 2527 of each second link 252, and when the hinge body 250 is in the unfolded state, the positioning element 28 is positioned in the first positioning hole, and when the hinge body 250 is in the bent state, the positioning element 28 is positioned in the second positioning hole.

In other embodiments, the second sliding guide surface 2524 of each second link 252 is respectively formed with a first positioning hole and a second positioning hole, which are spaced apart from each other, and the first positioning hole and the second positioning hole are located on the same arc line of the second sliding guide surface 2524, the first positioning hole is adjacent to one side of the front surface 2521, and the second positioning hole is away from one side of the front surface 2521. An elastic positioning part 28 is arranged on the arc surface 2535 of the third chain link 253 or the arc surface 2545 of the fourth chain link 254, when the hinge main body 250 is in the unfolding state, the positioning part 28 is positioned in the first positioning hole, and when the hinge main body 250 is in the bending state, the positioning part 28 is positioned in the second positioning hole.

The magnetic members 29 may be magnetic strips capable of attracting each other. The magnetic members 29 are respectively disposed on a plurality of links of the hinge body 250, such that a pair of the magnetic members 29 is disposed between each adjacent two of the links. Specifically, the magnetic members 29 may be fixed in the fixing grooves 2501, 2503, 2505, and 2506, respectively. When the hinge device 100 is bent, the side surface of each link is fixed to the side surface of an adjacent link through magnetic attraction, that is, a plurality of links of the hinge main body 250 are in a bent state, and the magnetic members 29 between every two adjacent links of the hinge main body 250 are attracted to each other, so that the hinge device 100 automatically maintains the bent state.

In this embodiment, the magnetic members 29 are four pairs of magnetic strips that are attracted to each other.

In other embodiments, the magnetic members 29 are pairs of magnets and iron bars that can be attracted to each other, and each pair of magnets and iron bars is disposed between two adjacent links.

As shown in fig. 4, in this embodiment, a supporting sheet 35 is attached to the back of the flexible screen 30, and the supporting sheet 35 covers the bendable region 31 of the flexible screen 30. The support sheet 35 may be a thin metal sheet such as copper foil, liquid metal sheet, memory alloy sheet, plastic sheet or other suitable material. In this embodiment, the supporting sheet 35 is a liquid metal sheet.

The liquid metal in the present invention is an alloy heated to a molten state, and then cooled at an ultra-fast cooling rate, so that the alloy crystal lattice is not in time to be arranged orderly and crystallized and solidified, and is called amorphous alloy, liquid metal or metallic glass because of the amorphous state, like glass. The liquid metal has the characteristics of long-range disorder (short-range order), metastable state, certain physical property isotropy, no definite melting point, glass transition temperature point and the like, has the characteristics of solid state, metal and glass, and can have high strength, high hardness, plasticity, heat conduction, wear resistance and the like under certain conditions. That is, the liquid metal of the present invention is substantially solid at normal temperature, but has some properties close to those of liquid, and is therefore called liquid metal. The liquid metal can be an alloy material of one or more materials of copper, titanium, iron, zirconium, silver, nickel, gallium, gold, antimony, cadmium, zinc, indium, silicon and the like, and the specific metal preferably can obtain other mechanical properties such as lower elastic modulus, hardness, extensibility and the like.

The reason why the liquid metal sheet is selected as the support sheet 35 in this embodiment is that the liquid metal sheet has better wear resistance. On one hand, the support piece 35 can effectively resist the friction generated by the hinge device 25, and is not easy to wear; on the other hand, the liquid metal sheet has a low elastic modulus, and when the electronic device 100 is bent by the hinge device 25, the supporting sheet 35 can be stretched synchronously or approximately synchronously with the flexible screen 30, so as to avoid the situation that the flexible screen 30 is damaged due to a large difference in stretching amplitude when being bent. The liquid metal can be copper-based, titanium-based, iron-based, zirconium-based, silver-based, nickel-based, gallium-based, gold-based, antimony-based, cadmium-based, zinc-based, indium-based, silicon-based and other liquid metals, and compared with the existing materials with lower elastic modulus, such as silica gel, foam, plastic and the like, the liquid metal has higher strength and better wear resistance, and can effectively support the flexible screen.

Referring to fig. 5 to 14, during assembly, the hinge body 250 is assembled first, that is, the positioning elements 28 are respectively installed in the receiving holes 2515 of the first chain link 251 and the receiving holes 2525 of the second chain link 252, each positioning element 28 can slide along the corresponding receiving hole 2515, 2525, and the convex protrusions 285 extend out of the corresponding receiving holes 2515, 2525. At this time, the second link 252 is rotatable relative to the first link 251 along a first axis L1 (shown in fig. 11), the first axis L1 is an axis of a virtual shaft, the first axis L1 is located inside the flexible screen 30, and specifically, the first axis L1 is located on a back surface of the flexible screen 30 and is close to the flexible screen 30. Attaching the arc surface 2527 of each second chain link 252 to the first sliding guide surface 2514 of the first chain link 251, so that the convex hulls 285 of the positioning members 28 on the first chain link 251 are respectively clamped into the first positioning holes 2502 of the corresponding second chain links 252; at this time, the third link 253 is rotatable relative to the corresponding second link 252 along a second axis L2 (shown in fig. 11), the second axis L2 is an axis of the virtual shaft, the second axis L2 is located inside the flexible screen 30, and specifically, the first axis L2 is located on the back surface of the flexible screen 30 and is close to the flexible screen 30. Attaching the arc surface 2535 of the third link 253 to the second sliding guide surface 2524 of one of the second links 252, so that the convex hull 285 of the positioning element 28 on the second link 252 is clamped into the corresponding first positioning hole 2502 of the third link 253; then, the arc surface 2545 of the fourth chain link 254 is attached to the second sliding guide surface 2524 of another second chain link 252, so that the convex hull 285 of the positioning element 28 on the second chain link 252 is clamped into the corresponding first positioning hole 2502 of the fourth chain link 254; at this time, the fourth link 254 is rotatable relative to the corresponding second link 252 along a second axis L2, the second axis L2 is an axis of the virtual shaft, the second axis L2 is located inside the flexible screen 30, and specifically, the first axis L2 is located on a back surface of the flexible screen 30 and is close to the flexible screen 30.

Assembling each link end cover mechanism 255, namely, slidably attaching the arc surfaces 2577 of the two second link end cover members 257 to the two slide guide surfaces 2564 of the first link end cover member 256, respectively, so that the stopper 2575 of each second link end cover member 257 is accommodated in the slide guide groove 2567 of the first link end cover member 256, the connecting part of each stopper 2575 is accommodated in the slide guide groove 2567, and the limiting part of each stopper 2575 extends out of the end surface 2563 of the first link end cover member 256; the arc surfaces 2587 of the two third link end cover members 258 are respectively attached to the sliding guide surfaces 2574 of the two second link end cover members 257 in a sliding manner, so that the stop block 2585 of each third link end cover member 258 is accommodated in the corresponding sliding guide groove 2578 of the second link end cover member 257, the connecting part of each stop block 2585 is accommodated in the sliding guide groove 2578, and the stop part of each stop block 2585 extends out of the end surface 2573 of the corresponding second link end cover member 257. The two link end cover mechanisms 255 are connected to two opposite ends of the hinge body 250, that is, the stopper 2575 of each second link end cover member 257 is slidably inserted into the corresponding stopper groove 2517 of the first link 251, the stopper 2585 of each third link end cover member 258 is slidably inserted into the corresponding stopper groove 2528 of the corresponding second link 252, each first link end cover member 256 is attached to the end surface 2513 of the first link 251, and the countersunk hole 2568 of the first link end cover member 256 faces the connecting hole 2518; each second link end cap member 257 abuts end surface 2523 of second link 252 and counter-sunk hole 2579 of second link end cap member 257 faces connecting hole 2529; two of the third link end caps 258 respectively engage end surfaces 2533 of the third links 253, and the countersunk hole 2589 of each third link end cap 258 faces the connecting hole 2536, and the other two of the third link end caps 258 respectively engage end surfaces 2543 of the fourth links 254, and the countersunk hole 2589 of each third link end cap 258 faces the corresponding connecting hole 2546; a plurality of fasteners are respectively fastened through countersunk holes 2568, 2579 and 2589 in corresponding connecting holes 2518, 2529, 2536 and 2546, so that the first link 251, the second link 252, the third link 253 and the fourth link 254 are rotatably connected to one body, and the first link end cover 256, the two second link end covers 257 and the two pairs of third link end covers 258 of each link end cover mechanism 255 are rotatably connected to one body. At this time, the convex hulls 285 of the positioning members 28 on both sides of the first chain link 251 are respectively clamped into the corresponding first positioning holes 2502 on the two second chain links 252, wherein the convex hull 285 of the positioning member 28 on one second link 252 snaps into the first positioning hole 2502 of the third link 253, the convex hull 285 of the positioning member 28 on the other second link 252 snaps into the first positioning hole 2502 of the fourth link 254, so that the first chain link 251, the two second chain links 252, the third chain link 253 and the fourth chain link 254 are connected in a horizontal state, the limiting part of the limiting block 2575 on each second chain link end cover member 257 abuts against one end of the corresponding limiting groove 2517 far away from the front surface 2511, the limiting part of the limiting block 2585 on each third chain link end cover member 258 abuts against one end of the corresponding limiting groove 2528 far away from the front surface 2521, thereby connecting first link end cap 256, second link end cap 257, and third link end cap 258 in a horizontal position.

The plurality of magnetic members 29 are fixed in the fixing grooves 2501, 2503, 2505, and 2506 of the first, second, third, and fourth links 251, 252, 253, respectively. A pair of magnetic members 29 attracted to each other is formed between the first chain link 251 and each second chain link 252, wherein a pair of magnetic members 29 attracted to each other is formed between one second chain link 252 and the third chain link 253, and a pair of magnetic members 29 attracted to each other is formed between the other second chain link 252 and the fourth chain link 254.

In this embodiment, each magnetic member 29 is fixed in the corresponding fixing groove by means of glue connection.

In other embodiments, the magnetic member may be fixed in the corresponding fixing groove by snapping or screwing.

Placing the mounted hinge device 25 between the first frame body 21 and the second frame body 23; the opposite ends of the sliding plates 2537 of the third link 253 of the hinge device 25 are slidably inserted into the sliding grooves 2122 of the two connecting bars 2121 of the first frame 21; the two elastic members 26 are respectively accommodated in the two accommodating grooves 2127, such that one end of each elastic member 26 is fixed on the corresponding positioning pillar 214, and the other end is connected to the corresponding bump 2538. At this time, the slide plate 2537 is slidably accommodated in the accommodating groove 2126 along the slide groove 2122. The mounting plate 2547 of the fourth link 254 is received in the connecting slot 2326 of the second frame 23, and a plurality of fasteners pass through the mounting plate 2547 and are respectively fastened in the connecting holes 2327, so as to fix the mounting plate 2547 to the second frame. The back surfaces of the two non-bent regions 33 of the flexible panel 30 are respectively attached to the mounting grooves 215 of the first frame 21 and the mounting grooves 235 of the second frame 23, and the back surface of the bendable region 31 of the flexible panel 30 is attached to the front surface of the hinge main body 250. At this time, the bendable region 31 of the flexible screen 30 can be bent along with the bending of the hinge main body 250, and the two elastic members 26 elastically push the first frame 21 away from the hinge main body 250, so that the flexible screen 30 is always kept in the unfolded state, which not only can compensate for the tolerance of the hinge device 25 in the direction perpendicular to the bending axis thereof, but also can prevent the flexible screen 30 from separating from the hinge main body 250 and arching, thereby avoiding the damage of the flexible screen.

Referring to fig. 15 to 18, fig. 15 is a perspective view illustrating a bent state of the electronic device in fig. 1; FIG. 16 is a cross-sectional view taken along line XVI-XVI in FIG. 15; FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. 15; fig. 18 is a sectional view taken along line XVIII-XVIII in fig. 15. When the electronic device 100 is bent, a bending force is applied to the electronic device 100, so that the convex hull 285 of each positioning element 28 on the first chain link 251 is separated from the clamping with the corresponding first positioning hole 2502 on the second chain link 252 and slides along the corresponding arc surface 2527, and the elastic element 284 of each positioning element 28 is elastically deformed; the arc surfaces 2527 of the two second links 252 respectively rotate along the two first sliding guide surfaces 2514 of the first link 251 to approach each other, and the arc surfaces 2577 of the two second link end covers 257 respectively rotate along the two sliding guide surfaces 2564 of the first link end cover 256 to approach each other; the connecting part of the stopper 2575 on each second link end cover member 257 slides along the guide slot 2567 of the corresponding first link end cover member 256, and the limiting part of the stopper 2575 slides along the corresponding limiting slot 2517 on the first link 251; and the magnetic members 29 between the first link 251 and the second link 252 are close to each other to increase the attraction force. Wherein the convex hull 285 of each positioning element 28 on a second chain link 252 slides along the arc surface 2535 without being clamped with the corresponding first positioning hole 2502 on the third chain link 253, and the elastic element 284 of each positioning element 28 is elastically deformed; the arc surface 2535 of the third link 253 rotates along the second sliding guide surface 2524 of the corresponding second link 252 to move toward the middle of the hinge body 250, and the arc surface 2587 of each third link end cap 258 connected to the third link 253 rotates along the sliding guide surface 2574 of the corresponding second link end cap 257 to move toward the middle of the hinge body 250; the connecting portion of the stop block 2585 connected to each third link end cover member 258 of the third link 253 slides along the slide guide groove 2578 of the corresponding second link end cover member 257, and the stop portion of the stop block 2585 slides along the corresponding stop groove 2528 of the second link 252; the magnetic members 29 between the third link 253 and the second link 252 are close to each other so that the attractive force is increased. Meanwhile, the convex hull 285 of each positioning element 28 on the other second chain link 252 is separated from the clamping with the corresponding first positioning hole 2502 on the fourth chain link 254 and slides along the arc surface 2545, and the elastic element 284 of each positioning element 28 is elastically deformed; the arc surface 2545 of the fourth link 254 rotates along the second sliding guide surface 2524 of the corresponding second link 252 to move toward the middle of the hinge body 250, and the arc surface 2587 of each third link end cap 258 connected to the fourth link 253 rotates along the sliding guide surface 2574 of the corresponding second link end cap 257 to move toward the middle of the hinge body 250; the connecting portion of the stop block 2585 attached to each third link end cap 258 of the fourth link 254 slides along the guide slot 2578 of the corresponding second link end cap 257, and the stop portion of the stop block 2585 slides along the corresponding stop slot 2528 of the second link 252; and the magnetic members 29 between the fourth link 254 and the second link 252 are close to each other so that the attractive force is increased.

When the convex hull 285 of the positioning member 28 on the first chain link 251 passes over the arc top of the arc surface 2527 of the second chain link 252, the magnetic member 29 between each second chain link 252 and the first chain link 251 is magnetically attracted, so that the arc surfaces 2527 of the two second chain links 252 continuously slide along the first sliding guide surfaces 2514 to approach each other, and the elastic member 284 of the positioning member 28 is partially elastically restored to push the second chain links 252 to continuously rotate toward the adjacent first chain links 251; the stop block 2575 of each second link end cover member 257 slides along the corresponding stop groove 2517 until the convex protrusions 285 of the positioning member 28 on the first link 251 respectively face the second positioning holes 2504 on the second links 252, the elastic member 284 of the positioning member 28 elastically resets and is clamped into the corresponding second positioning holes 2504, each stop block 2575 slides along the corresponding stop groove 2517 and abuts against one end of the stop groove 2517 adjacent to the front surface 2511, and the magnetic members 29 between the first link 251 and each second link 252 are attached to each other. Wherein the convex hull 285 of the positioning member 28 on a second link 252 passes over the arc tip of the arc surface 2535 of the third link 253, the magnetic member 29 between the second link 252 and the third link 253 is magnetically attracted, so that the arc surface 2535 of the third link 253 continues to slide along the second sliding guide surface 2524 and moves toward the middle of the hinge body 250, and the elastic component 284 of the positioning component 28 is partially elastically restored to push the third link 253 to continue to move toward the middle adjacent to the hinge body 250 until the convex protrusions 285 of the positioning component 28 on the second link 252 respectively face the second positioning holes 2504 on the third link 253, the elastic component 284 of the positioning component 28 is elastically restored to be clamped into the corresponding second positioning holes 2504, each limiting block 2585 slides along the corresponding limiting groove 2528 to abut against one end of the limiting groove 2528 adjacent to the front surface 2521, and the magnetic members 29 between the second chain link 252 and the third chain link 253 are attached and attracted to each other. The convex hull 285 of the locating member 28 on the other second link 252 passes over the arc tip of the arc surface 2545 of the fourth link 254, the magnetic member 29 between the second link 252 and the fourth link 254 is magnetically attracted, so that the arc surface 2545 of the fourth link 254 continues to slide along the second sliding guide surface 2524 and moves toward the middle of the hinge body 250, and the elastic component 284 of the positioning component 28 is partially elastically restored to push the fourth link 253 to move continuously toward the middle part adjacent to the hinge body 250 until the convex protrusions 285 of the positioning component 28 on the second link 252 respectively face the second positioning holes 2504 on the fourth link 254, the elastic component 284 of the positioning component 28 is elastically restored to be clamped into the corresponding second positioning holes 2504, each limiting block 2585 slides along the corresponding limiting groove 2528 to abut against one end of the limiting groove 2528 adjacent to the front surface 2521, and the magnetic members 29 between the second link 252 and the fourth link 254 are attached to each other. At this time, the hinge main body 250 is bent, and the flexible screen 30 is bent along with the hinge main body 250; the convex hulls 285 of the positioning elements 28 are respectively clamped into the corresponding second positioning holes 2504 and the magnetic elements 29 to be mutually adsorbed, so that the electronic device 100 is kept in a bent state; the sliding plate 2537 slides in the direction of the first frame 21, and the sliding plate 2537 pushes the elastic member 26 to compress the elastic member 26; the front surface 2511 of the first chain link 251, the front surfaces 2521 of the two second chain links 252 and the front surfaces 2531 of the two third chain links 253 are connected with each other to form an arched surface, that is, the front surface 2511 of the first chain link 251, the front surfaces 2521 of the two second chain links 252 and the front surfaces 2531 of the two third chain links 253 share a circular arc surface, so as to be convenient for fitting the flexible screen 30; the front surface 2561 of the first link end cover 256, the front surfaces 2571 of the two second link end covers 257 and the front surfaces 2581 of the two second link end covers 258 are connected to form an arc surface, that is, the front surfaces 2561 of the first link end cover 256, the front surfaces 2571 of the two second link end covers 257 and the front surfaces 2581 of the two second link end covers 258 share an arc surface, so as to facilitate the fitting of the flexible screen 30; the first frame body 21 rotates with the third link 253, and the second frame bodies 23 approach each other as the fourth link 254 rotates.

When the electronic device 100 needs to be unfolded, the first frame body 21 and the second frame body 23 are pulled apart, wherein the convex hull 285 of each positioning element 28 on one second link 252 is separated from being held by the second positioning hole 2504 of the third link 253 and slides along the corresponding arc surface 2535, the elastic element 284 of each positioning element 28 is elastically deformed, the arc surface 2535 of the third link 253 rotates along the second sliding guide surface 2524 of the corresponding second link 252 and moves away from the middle of the hinge body 250, and the arc surface 2587 of each third link end cover 258 connected to the third link 253 rotates along the sliding guide surface 2574 of the corresponding second link end cover 257 and moves away from the middle of the hinge body 250; the connecting portion of the stop block 2585 connected to each third link end cover 258 of the third link 253 slides along the guide slot 2578 of the corresponding second link end cover 257, and the stop portion of the stop block 2585 slides along the corresponding stop slot 2528 of the second link 252, so that the magnetic member 29 between the third link 253 and the second link 252 is separated from the attraction by external force and moves away from each other, thereby continuously reducing the attraction force. The convex hull 285 of each positioning member 28 on another second link 252 slides along the corresponding arc surface 2545 without being held by the second positioning hole 2504 of the fourth link 254, the elastic member 284 of each positioning member 28 elastically deforms, the arc surface 2545 of the fourth link 254 rotates along the second sliding guide surface 2524 of the corresponding second link 252 to move away from the middle of the hinge body 250, and the arc surface 2587 of each third link end cover 258 connected to the fourth link 254 rotates along the sliding guide surface 2574 of the corresponding second link end cover 257 to move away from the middle of the hinge body 250; the connection portion of the stop block 2585 connected to each third link end cover 258 on the fourth link 254 slides along the guide slot 2578 of the corresponding second link end cover 257, and the stop portion of the stop block 2585 slides along the corresponding stop slot 2528 on the second link 252, so that the magnetic member 29 between the fourth link 254 and the second link 252 is separated from the attraction and separated from each other, thereby continuously reducing the attraction force. The convex hull 285 of each positioning element 28 on the first chain link 251 slides along the corresponding arc surface 2527 without being clamped with the corresponding first positioning hole 2502 on the second chain link 252, and the elastic element 284 of each positioning element 28 is elastically deformed; the arc surfaces 2527 of the two second links 252 respectively rotate along the two first sliding guide surfaces 2514 of the first link 251 to be away from each other, and the arc surfaces 2577 of the two second link end covers 257 respectively rotate along the two sliding guide surfaces 2564 of the first link end cover 256 to be away from each other; the connection portion of the stopper 2575 of each second link end cover member 257 slides along the corresponding guiding slot 2567 of the first link end cover member 256, and the stopper portion of the stopper 2575 slides along the corresponding stopper slot 2517 of the first link 251, so that the magnetic force of the magnetic member 29 between the first link 251 and the second link 252 is reduced continuously due to the detachment and the mutual separation of the magnetic member from the magnetic member.

When the convex hull 285 of the positioning member 28 on the first link 251 passes over the arc top of the arc surface 2527 of the second link 252, the attractive force of the magnetic member 29 between the first chain link 251 and each second chain link 252 is reduced continuously, the elastic member 284 of the positioning member 28 still generates a pushing force against the arc surface 2527, so that the arc surfaces 2527 of the two second chain links 252 continue to slide along the first sliding guide surface 2514 and move away from each other, the stop block 2575 of each second chain link end cover member 257 slides along the corresponding stop groove 2517 until the convex protrusions 285 of the positioning member 28 on the first chain link 251 respectively face the first positioning holes 2502 on the second chain links 252, the elastic member 284 of the positioning member 28 elastically resets to clamp the convex protrusions 285 into the corresponding first positioning holes 2502, each stop block 2575 slides along the corresponding stop groove 2517 and abuts against one end of the stop groove 2517, which is far from the front surface 2511, and the first chain link 251 and the two second chain links 252 are in a horizontal state. The convex hull 285 of the positioning element 28 on a second link 252 crosses the arc top of the arc surface 2535 of the third link 253, the magnetic force of the magnetic element 29 between the third link 252 and the second link 252 reduces the pushing force of the elastic element 284 of the positioning element 28 against the arc surface 2535, so that the arc surface 2535 of the third link 253 continues to slide along the second sliding guide surface 2524 and moves towards the middle part away from the hinge body 250 until the convex hull 285 of the positioning element 28 on the second link 252 respectively faces the first positioning hole 2502 on the third link 253, the elastic element 284 of the positioning element 28 elastically resets to clip the convex hull 285 into the corresponding first positioning hole 2502, each stopper 2585 slides along the corresponding limiting groove 2528 and abuts against one end of the limiting groove 2528 away from the front surface 2521, and the third link 253, the first link 251 and the second link 252 are in a horizontal state. The convex hull 285 of the positioning element 28 on another second link 252 passes over the arc top of the arc surface 2545 of the fourth link 254, the magnetic force of the magnetic element 29 between the fourth link 254 and the second link 252 reduces the pushing force of the elastic element 284 of the positioning element 28 against the arc surface 2545, so that the arc surface 2545 of the fourth link 254 continues to slide along the second sliding guide surface 2524 and moves towards the middle part away from the hinge body 250 until the convex hulls 285 of the positioning element 28 on the second link 252 respectively face the first positioning holes 2502 on the fourth link 254, the elastic element of the positioning element 28 elastically resets to clip the convex hulls 285 into the corresponding first positioning holes 2502, each stopper 2585 slides along the corresponding limiting groove 2528 and abuts against one end of the limiting groove 2528 away from the front surface 2521, and the fourth link 254, the first link 251, the second link 252 and the third link 253 are in a horizontal state. At this time, the hinge main body 250 is unfolded, the flexible screen 30 is flat along with the hinge main body 250, and the magnetic members 29 are spaced from each other; these positioning members 28 are respectively inserted into the corresponding first positioning holes 2502 to protect the electronic device 100 in the unfolded state, i.e., the second link, the third link, the second link, the fourth link, the first link, the second link, the third link, the fourth link, the second link, the fourth link, the third link, the fourth link, the second link, the third link, the fourth link, the second link, the fourth.

Because the magnetic members 29 are disposed on the hinge device 25, the hinge device 25 can be fixed at the bending position by the mutual attraction of the magnetic members 29, so as to prevent the hinge device 25 from being opened due to the weight of the whole device or other reasons in the bending state, thereby automatically maintaining the bending state. Also, the magnetic member 29 is located on the hinge device 25 without occupying the inner space of the housing 20, facilitating the arrangement of other electronic components inside the housing 20. Furthermore, the magnetic member 29 is located outside the range of the housing 20, so that the influence of the magnetic force of the magnetic member 29 on the electromagnetic performance of other electronic devices inside the housing 20 can be effectively avoided, and the normal operation of the electronic devices can be ensured.

The utility model discloses setting element 20 can be fixed a position hinge means 25 respectively in the position of buckling and expansion position, and the produced elastic force of setting element 20 can make hinge means 25 comparatively firm in the state of the position of buckling and expansion position, need apply certain initial dynamics promptly and just can make hinge means 25 take place to deform, therefore is difficult to receive the gravity influence of itself and the condition that the accident expanded or buckled.

It is to be understood that the term "relative sliding" as used herein does not limit direct contact and relative sliding between two elements, but may also include relative sliding between spaced third-party elements, which are not limited to solid elements such as sheets, films, etc., but may also include non-solid elements such as gaps, spaces, etc., or a combination of solid and non-solid elements; the third party element is also not limited to one, but may include a plurality. That is, as long as two elements have a relative sliding motion relationship, no matter what the actual positions of the two elements are, the relative sliding motion is considered to be within the scope of the present invention.

The above is an implementation manner of the embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principles of the embodiments of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A hinge device is positioned between a first frame body and a second frame body of a shell and used for supporting a flexible screen arranged on the shell.

2. The hinge assembly of claim 1, wherein the hinge body includes a plurality of relatively movable links, a front surface of each link supporting the flexible screen, and a side surface of each link adapted to be magnetically attracted to a side surface of an adjacent link.

3. The hinge assembly of claim 2, wherein the side surface of each link remote from the front surface is attracted to the adjacent link by a magnetic member.

4. A hinge assembly according to claim 2, wherein the side of each link remote from the front face is provided with a magnetic member, and the flexible screen surrounds each magnetic member when the hinge assembly is bent.

5. The hinge device as claimed in claim 1, wherein the hinge body includes a plurality of links, the positioning mechanism includes a plurality of magnetic members, the magnetic members capable of engaging with each other are correspondingly disposed on each adjacent two of the links, and the magnetic members between each adjacent two of the links attract each other when the hinge device is in a bent state.

6. The hinge assembly as claimed in claim 5, wherein said plurality of magnetic members are a plurality of pairs of magnetic and iron bars, each of said pairs being disposed on adjacent ones of said links.

7. The hinge device as claimed in claim 5, wherein the links include a first link and a second link, the second link is hinged to the first link, the second link is rotatable about a first axis relative to the first link, the magnetic members are disposed between the first link and the second link, and the magnetic members attract each other when the first link and the second link are bent.

8. The hinge apparatus as claimed in claim 7, wherein the first link has fixing grooves formed at opposite sides thereof, the second link has fixing grooves formed at opposite sides thereof, the fixing grooves of the first link correspond to the fixing grooves of the adjacent second link, and the magnetic members are fixed in the fixing grooves of the first link and the second link, respectively.

9. The hinge assembly of claim 8, wherein the retaining groove of the first link opens at an intersection of the back face and the side face of the first link and is parallel to the first axis, and wherein the retaining groove of the second link opens at an intersection of the back face and the side face of the second link and is parallel to the first axis.

10. The hinge assembly as claimed in claim 8, wherein the magnetic members are glued or snapped into the corresponding fixing grooves.

11. The hinge assembly of claim 7, wherein the links further comprise a third link and a fourth link, one side of the third link being slidably connected to the first frame body and one side of the fourth link being fixedly connected to the second frame body, the first and second links being disposed between the third and fourth links.

12. The hinge assembly of claim 11, wherein the positioning mechanism further comprises a positioning member disposed between the first and second links for positioning the hinge assembly in the extended state and the bent state, respectively.

13. The hinge assembly of claim 12, wherein the retainer is resilient and remains resiliently compressed in both the extended position and the collapsed position.

14. The hinge assembly of claim 12, wherein the positioning member is engaged with the second link in both the extended state and the bent state.

15. The hinge assembly of claim 12, wherein the positioning member exerts a greater spring force on the first and second links in the extended state of the hinge assembly than the positioning member exerts on the first and second links in the transition state between the extended and bent states of the hinge assembly.

16. The hinge assembly of claim 12, wherein the positioning member exerts a greater spring force on the first and second links in the flexed position of the hinge assembly than the positioning member exerts on the first and second links in the transition state between the extended and flexed positions of the hinge assembly.

17. The hinge device as claimed in claim 12, wherein the first link includes a strip extending parallel to the bending axis of the hinge body, the strip is provided with arc-shaped sliding guide surfaces on opposite sides thereof, the second link is provided with a sliding guide strip protruding from one side thereof, the sliding guide strip is provided with an arc surface, and the arc surface is slidably attached to the sliding guide surface.

18. The hinge device as claimed in claim 17, wherein an elastic positioning member is disposed on the sliding guide surface of the first link, a first positioning hole and a second positioning hole are disposed on the arc surface of the second link, the positioning member slidably abuts against the arc surface of the second link, when the first link and the second link are in the unfolded state, the positioning member is positioned in the first positioning hole, and when the first link and the second link are in the folded state, the positioning member is positioned in the second positioning hole.

19. The hinge device as claimed in claim 17, wherein each of the sliding guide surfaces of the first chain link has a first positioning hole and a second positioning hole, the first positioning hole and the second positioning hole are located on a same arc line of the sliding guide surface, an elastic positioning member is disposed on the arc surface of the second chain link, the positioning member is positioned in the first positioning hole when the hinge body is in the unfolded state, and the positioning member is positioned in the second positioning hole when the hinge body is in the folded state.

20. The hinge assembly of claim 12, wherein the second link comprises a body extending along a bending axis parallel to the hinge body, a sliding guide surface is disposed on a side of the second link away from the first link, the third link and the fourth link are convexly provided with sliding guide strips, and the sliding guide strips are provided with arc surfaces slidably attached to the sliding guide surfaces.

21. The hinge device as claimed in claim 20, wherein the sliding guide surface of the second link is provided with an elastic positioning member, the arc surfaces of the third link and the fourth link are provided with a first positioning hole and a second positioning hole, the positioning member is positioned in the first positioning hole when the hinge body is in the unfolded state, and the positioning member is positioned in the second positioning hole when the hinge body is in the folded state.

22. The hinge device as claimed in claim 20, wherein the sliding guide surface of the second link is provided with a first positioning hole and a second positioning hole, the first positioning hole and the second positioning hole are located on the same arc line of the sliding guide surface, the arc surfaces of the third link and the fourth link are provided with elastic positioning members, when the hinge body is in the unfolded state, the positioning members are positioned in the first positioning holes, and when the hinge body is in the folded state, the positioning members are positioned in the second positioning holes.

23. The hinge device according to claim 17 or 20, wherein the sliding guide surface has a receiving hole, the positioning element is disposed in the receiving hole, the positioning element includes a positioning rod slidably received in the receiving hole, and an elastic element sleeved on the positioning rod, one end of the positioning rod is provided with a spherical convex hull, the elastic element forces the positioning rod to move outward and extend out of the receiving hole, and the convex hull of the positioning element extends out of the receiving hole.

24. The hinge device according to claim 17 or 20, wherein the arc surface has a receiving hole, the positioning element is disposed in the receiving hole, the positioning element includes a positioning rod slidably received in the receiving hole, and an elastic element sleeved on the positioning rod, one end of the positioning rod is provided with a spherical convex hull, the elastic element forces the positioning rod to move outward and extend out of the receiving hole, and the convex hull of the positioning element extends out of the receiving hole.

25. The hinge device as claimed in claim 17, wherein during bending of the hinge device, when the positioning element passes over the arc top of the arc surface, the magnetic element between each second link and the first link magnetically attracts to make the arc surfaces of the second links continuously slide along the sliding guide surfaces to approach each other until the positioning element is snapped into the corresponding second positioning hole, and the magnetic elements are attached to each other.

26. The hinge device as claimed in claim 17, wherein during the unfolding of the hinge device, when the positioning element passes over the arc top of the arc surface of the second link, the magnetic force of the magnetic element between the first link and the second link is less than the elastic pushing force of the positioning element against the arc surface, the positioning element elastically pushes the arc surface of the second link to continuously slide along the sliding guide surface and move away from each other until the positioning element is clamped into the corresponding first positioning hole, and the magnetic strips between the first link and the second link are separated.

27. The hinge device as claimed in claim 18, 19, 21 or 22, wherein the positioning element is an elastic positioning bead, and a bead body of the elastic positioning bead can be clamped in the first positioning hole or the second positioning hole respectively.

28. The hinge assembly of claim 18 or 21, wherein the first positioning hole and the second positioning hole are located on the same circular arc line of the circular arc surface, the first positioning hole is located away from the strap body, and the second positioning hole is located adjacent to the strap body.

29. A housing comprising a first frame, a second frame, and the hinge assembly of any one of claims 1-28, the hinge assembly coupled between the first frame and the second frame.

30. An electronic device comprising a flexible screen and a housing as claimed in claim 29, the flexible screen being disposed on the housing.