CN112703326A

CN112703326A - Hinge device, shell and electronic device

Info

Publication number: CN112703326A
Application number: CN201880095895.8A
Authority: CN
Inventors: 欧阳烁; 陈松亚; 凡小飞
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2021-04-23
Also published as: WO2020124378A1

Abstract

A hinge device (25), a housing (20) of an electronic device and an electronic device (100), a flexible screen (30) is arranged on the housing (20), the shell (20) comprises frame bodies (21,23) and a hinge device (25), the hinge device (25) is arranged on the frame bodies (21,23), the hinge device (25) comprises a first chain link (251) and a second chain link (253) hinged to the first chain link (251), and a positioning mechanism (256), the first link (251) including a first positioning groove (2511) and a second positioning groove (2513), a positioning hole (2532) is arranged on the second chain link (253), the positioning mechanism (256) comprises a positioning part (2561), the first end of the positioning piece (2561) is connected in the positioning hole (2532), when the hinge device (25) is in an unfolded state, the second end of the positioning piece (2561) is movably connected to the first positioning groove (2511); and the second end of the positioning piece (2561) is movably connected to the second positioning groove (2513) when the hinge device (25) is in a bent state. The positioning piece can ensure that the hinge device stably keeps an unfolding state or a bending state, and the positioning effect is good.

Description

Hinge device, shell and electronic device

Technical Field

The application relates to the field of flexible screen support, in particular to a hinge device for supporting a flexible screen, a shell for the hinge device and an electronic device for the shell.

Background

Compared with the traditional display device, the flexible display screen has the advantages of being bendable, not easy to damage, flexible and the like, so that the flexible display screen 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 formed by connecting a plurality of chain links, and the chain links are movably connected with each other. The existing hinge generally adopts a damping sheet to perform circumferential moment positioning on a rotating shaft of the hinge, namely when external moment applied on the rotating shaft does not exceed specified moment, the rotating shaft cannot rotate, so that the positioning of the rotating shaft is realized. However, the rotating shaft frequently opens and closes the damping fins during rotation, and the damping fins are easily deformed, so that the positioning effect is poor.

Disclosure of Invention

The application provides a hinge means that location effect is good, be provided with hinge means's casing, and be provided with the electron device of casing.

The application provides a hinge device, including a first chain link, articulate in a second chain link of first chain link, and positioning mechanism, first chain link includes first constant head tank and second constant head tank, be equipped with the locating hole on the second chain link, positioning mechanism includes the setting element, the first end of setting element is connected in the locating hole, hinge device is under the state of expanding, the second end swing joint of setting element is in first constant head tank; and the second end of the positioning piece is movably connected to the second positioning groove when the hinge device is in a bent state.

The application also provides a shell, which comprises a frame body and a hinge device, wherein the hinge device is arranged on the frame body and comprises a first chain link, a second chain link hinged to the first chain link and a positioning mechanism, the first chain link comprises a first positioning groove and a second positioning groove, one side, facing the first chain link, of the second chain link is provided with a positioning hole, the positioning mechanism comprises a positioning piece, the first end of the positioning piece is connected into the positioning hole, and the second end of the positioning piece is movably connected to the first positioning groove in an unfolding state of the hinge device; and the second end of the positioning piece is movably connected to the second positioning groove when the hinge device is in a bent state.

The application also provides an electronic device, which comprises a flexible screen and a shell, wherein the flexible screen is arranged on the shell, the shell comprises a frame body and a hinge device, the hinge device is arranged on the frame body, the hinge device comprises a first chain link, a second chain link hinged to the first chain link and a positioning mechanism, the first chain link comprises a first positioning groove and a second positioning groove, one side of the second chain link facing the first chain link is provided with a positioning hole, the positioning mechanism comprises a positioning piece, the first end of the positioning piece is connected into the positioning hole, and the second end of the positioning piece is movably connected to the first positioning groove when the hinge device is in an unfolded state; and the second end of the positioning piece is movably connected to the second positioning groove when the hinge device is in a bent state.

The hinge device of the electronic device comprises a chain link and a positioning mechanism, wherein the chain link comprises a first positioning groove and a second positioning groove, the positioning mechanism comprises a positioning piece, and the second end of the positioning piece is movably connected to the first positioning groove when the hinge device is in an unfolded state; and the second end of the positioning piece is movably connected to the second positioning groove when the hinge device is in a bent state. Therefore, the positioning piece can ensure that the hinge device stably keeps an unfolding state or a bending state, and the positioning effect is good.

Drawings

In order to more clearly illustrate the technical solutions in 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 only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an electronic device in a first embodiment of the present application.

Fig. 2 is a sectional view taken along line II-II in fig. 1.

Fig. 3 is a partial enlarged view of the electronic device in fig. 2.

Fig. 4 is an enlarged view of the portion IV in fig. 3.

Fig. 5 is a knot-labeled illustration of the bent state of the electronic device of fig. 2.

Fig. 6 is a schematic structural diagram of an electronic device in a second embodiment of the present application.

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

Fig. 8 is a schematic structural diagram of an electronic device in a third embodiment of the present application.

Fig. 9 is an enlarged view of portion IX in fig. 8.

Fig. 10 is a schematic structural diagram of an electronic device in a fourth embodiment of the present application.

Fig. 11 is a schematic structural diagram of an electronic device in a fifth embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not imply or indicate that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Referring to fig. 1 to 4, fig. 1 is a schematic perspective view of an electronic device according to a first embodiment of the present application; FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1; FIG. 3 is an enlarged view of a portion of the electronic device of FIG. 2; fig. 4 is an enlarged view of the portion IV in fig. 3. The electronic device 100 in the first embodiment of the present application 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 used for being supported and arranged on the flexible screen 30, the hinge device 25 comprises at least one first link 251, a second link 253 hinged to the first link 251, and a positioning mechanism 256, the link 251 comprises a first positioning groove 2511 and a second positioning groove 2513, one side of the second link 253 facing the first link 251 is provided with a positioning hole 2535, the positioning mechanism 256 comprises at least one positioning piece 2561, and a first end of the positioning piece 2561 is connected in the positioning hole 2532; in the unfolded state of the hinge device 25, the second end of the positioning member 2561 is movably connected to the first positioning slot 2511; in the bending state of the hinge device 25, the second end of the positioning member 2561 is movably connected to the second positioning slot 2513.

In this embodiment, the hinge device 25 includes a hinge body 250 having a plurality of links, the hinge body 250 is located between the first frame body 21 and the second frame body 23, one side of the hinge body 250 is connected to the first frame body 21, the other side of the hinge body 250 opposite to the first frame body is connected to the second frame body 23, and the positioning mechanism 256 is used for positioning the hinge body 250. The hinge body 250 includes a second link 253, two first links 251 hinged to opposite sides of the second link 253, and two third links 255 hinged to respective sides of the two first links 251 facing away from the second link 253. The positioning mechanism 256 includes a plurality of first positioning members 2561 and a plurality of second positioning members 2565, wherein a first positioning member 2561 is disposed between each first link 251 and each second link 253, and a second positioning member 2565 is disposed between each third link 255 and the corresponding first link 251. The positioning mechanism 256 is used to position the hinge device 25 in the unfolded state or the folded state, i.e., the positioning mechanism 256 can maintain the unfolded state or the folded state of the hinge device 25. When the hinge device 25 is in the unfolded state, the flexible screen 30 is in the unfolded state along with the hinge device 25; when the hinge means 25 is in the bent state, the flexible screen 30 is bent along with the hinge means 25.

The bending axis of the hinge device 25 of the present application is not limited to a solid axis, but may be a non-solid axis, i.e., a virtual axis, and may be considered as a bending axis as long as the hinge body 250 can be bent around the axis.

The positioning mechanism 256 of the electronic device 100 in this application satisfies in any state: the length of the positioning mechanism 256 without external force is greater than the distance between the first positioning slot 2511/the second positioning slot 2513 and the positioning hole 2535, so that in any state, the

positioning slots

2511 and 2513 and the positioning hole 2535 are stressed, and the positioning mechanism 256 has a positioning function.

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.

A first positioning member 2561 is disposed between the first link 251 and each second link 253 of the hinge device 25 of the electronic device 100; a second positioning piece 2565 is arranged between each first chain link 251 and the corresponding third chain link 255; the positioning mechanism 256 positions the hinge device 25 in the unfolded state or the folded state by the first positioning member 2561 and the second positioning member 2565. The first link 251 comprises a first positioning slot 2511 and a second positioning slot 2513, a first end of the positioning member 2561 is accommodated in the positioning hole 2535, and a second end of the positioning member 2561 is movably connected to the first positioning slot 2511 in the unfolded state of the hinge device 25; in the bent state of the hinge device, the second end of the positioning member 2561 is movably connected to the second positioning slot 2513. Therefore, the positioning mechanism 256 can stably hold the hinge device 25 in the unfolded state or the folded state, and the positioning effect is excellent.

At least one first positioning member 2561 is disposed on each of two opposite sides of the second link 253, and the first positioning slot 2511 and the second positioning slot 2513 are disposed on a side of each of the first links 251 facing the second link 253. The first positioning member 2561 is retractable within the positioning hole 2535 along the length direction of the positioning hole 2535. When the hinge device 25 is in the unfolded state, the first positioning member 2561 elastically abuts against the first positioning groove 2511, so that the hinge device 25 stably maintains the unfolded state; when the hinge device 25 is in the bent state, the first positioning member 2561 elastically abuts against the second positioning groove 2513, so that the hinge device 25 stably maintains the bent state; during the process of unfolding and bending the hinge device 25, the first positioning member 2561 is subjected to a force by the inner surface of the first positioning slot 2511, the component of the force towards the second end of the first positioning member 2561 causes the first positioning member 2561 to contract and leave the first positioning slot 2511, and the component of the force towards the second positioning slot 2513 causes the second end of the first positioning member 2561 to slide towards the second positioning slot 2513; during the process of bending the hinge device 25 to unfold, the first positioning member 2561 is subjected to the force of the inner surface of the second positioning slot 2513, and the component of the force towards the second end of the first positioning member 2561 causes the first positioning member 2561 to contract and leave the second positioning slot 2513; the component of the force directed at the first detent 2511 causes the second end of the first detent 2561 to slide toward the first detent 2511.

In this embodiment, the cross section of the second link 253 is in a waist shape or an oval shape, that is, both side surfaces of the second link 253 facing the two first links 251 are arc surfaces 2531, the positioning hole 2535 is opened on each arc surface 2531, the positioning hole 2535 is a blind hole, and the first positioning member 2561 is disposed in the positioning hole 2535. Specifically, the second link 253 includes a front surface 2532 attached to the back surface of the flexible screen 30, a back surface 2533 facing away from the flexible screen 30, and two arc surfaces 2531 respectively connected between two opposite side edges of the front surface 2532 and the corresponding side edges of the back surface 2533. Each circular arc surface 2531 is provided with the positioning hole 2535 at a side away from the flexible screen 30, each positioning hole 2535 is a blind hole, the blind hole extends obliquely from the back surface 2533 of the second link 253 to the front surface 2532, and the first positioning member 2561 is slidably received in the positioning hole 2535.

The front face in this application refers to the face facing the light exit surface of the flexible screen 30, and the back face refers to the face facing the light exit surface of the flexible screen 30.

Each first link 251 includes a front surface 2515 attached to the back surface of the flexible screen 30, a bottom surface 2516 facing away from the flexible screen 30, and two side surfaces connected between two opposite sides of the front surface 2515 and two opposite sides of the bottom surface 2516. Each side surface of the first chain link 251 is provided with a first positioning groove 2511 and a second positioning groove 2513, the inner surfaces of the first positioning groove 2511 and the second positioning groove 2513 are arc surfaces, the first positioning groove 2511 is adjacent to the bottom surface 2516, the second positioning groove 2513 is adjacent to the front surface 2515, and the first positioning groove 2511 and the second positioning groove 2513 are in arc transition. That is, the first positioning groove 2511 and the second positioning groove 2513 on the same side are connected by a circular arc convex surface 2517, and the second end of the elastic positioning member 2561 can slide over the circular arc convex surface 2517 and be automatically positioned in the first positioning groove 2511 or the second positioning groove 2513. The radius of curvature of the arcs of the inner surfaces of the first positioning slot 2511 and the second positioning slot 2513 can satisfy that the first positioning piece 2561 can be fixed in the slot, and if the radius of curvature of the positioning slot is too small, the first positioning piece 2561 cannot be positioned in the positioning slot; if the radius of curvature of the detent is too large, the end of the first detent 2561 cannot move relative to one another within the detent. The front surface 2515 of each first link 251 is a circular arc surface, so that the flexible screen 30 can be conveniently attached to the back surface of the bent flexible screen.

Each third link 255 includes a front surface 2552 attached to the back surface of the flexible screen 30, a bottom surface 2554 facing away from the flexible screen 30, and a circular arc surface 2555 connected between the front surface 2552 and the bottom surface 2554 and facing the corresponding second connection node 251. At least one positioning hole 2556 is formed in the arc surface 2555, and the second positioning member 2565 is disposed in the positioning hole 2556. Specifically, one side of the arc surface 2555, which is away from the flexible screen 30, is provided with the positioning hole 2556, the positioning hole 2556 is a blind hole, the blind hole extends obliquely from the bottom surface 2554 of the third link 253 to the front surface 2552, and the second positioning element 2565 is accommodated in the positioning hole 2556.

Each first positioning member 2561 includes a positioning rod 2562 slidably received in the corresponding positioning hole 2535, and an elastic member 2564, the elastic member 2564 is received in the positioning hole 2535 and pushes against the positioning rod 2562, so that the second end of the positioning rod 2562 extends out of the opening of the positioning hole 2535, and the second end of the positioning rod 2562 can elastically abut against the first positioning groove 2511 or the second positioning groove 2513 of the corresponding first link 251. The second end of the positioning rod 2562 is a spherical convex hull, which can slide on the arc convex surface 2517 between the first positioning groove 2511 and the second positioning groove 2513, and can be automatically positioned in the first positioning groove 2511 or the second positioning groove 2513. In this embodiment, the elastic member 2564 is a spring, one end of the spring is connected to the bottom end of the positioning rod 2562, and the other end of the spring is connected to the second link 253.

In this embodiment, each second positioning member 2565 has the same structure as the first positioning member 2561, that is, includes a positioning rod 2566 slidably received in the corresponding positioning hole 2556, and an elastic member 2568, wherein the elastic member 2568 is received in the positioning hole 2556 and pushes against the positioning rod 2566, so that the second end of the positioning rod 2566 extends out of the opening of the positioning hole 2556, and the second end of the positioning rod 2566 elastically abuts against the corresponding first positioning groove 2511 or second positioning groove 2513 of the first link 251 facing away from the second link 253. The second end of the positioning rod 2566 is a spherical convex hull, and the convex hull can slide on the arc convex surface 2517 between the corresponding first positioning groove 2511 and the second positioning groove 2513, and can be automatically positioned in the first positioning groove 2511 or the second positioning groove 2513. In this embodiment, the elastic member 2568 is a spring, one end of the spring is connected to the bottom end of the positioning rod 2566, and the other end of the spring is connected to the corresponding third link 255.

Referring to fig. 3 to 5, fig. 5 is a schematic diagram illustrating a bending state of the electronic device in fig. 2. When the hinge device 25 is in a flattened state, the second chain link 253, the first chain links 251 and the third chain links 255 are located on the same plane, and the positioning rods 2562 of the first positioning pieces 2561 on two opposite sides of the second chain link 253 elastically abut against the first positioning grooves 2511 of the two first chain links 251 facing the second chain links 253 respectively; the positioning rods 2566 of the second positioning members 2565 of the two third links 255 respectively elastically abut against the first positioning grooves 2511 of the two first links 251 facing away from the second links 253, so that the hinge device 25 is kept in a flat state, and the flexible screen 30 is kept in a flat state.

When the electronic device 100 is bent, the force for bending the electronic device 100 causes the convex hulls of the positioning rods 2562 on the two opposite sides of the second link 253 to be separated from the positioning of the corresponding first positioning grooves 2511 and slide along the corresponding arc convex surface 2517, each positioning rod 2562 extrudes the corresponding elastic piece 2564 to generate elastic deformation, the positioning rods 2562 retract into the positioning holes 2535, and the two first links 251 rotate and move towards the middle part of the hinge main body 250; the convex hull of the positioning rod 2566 of the second positioning member 2565 on each third link 255 is separated from the positioning of the corresponding first positioning groove 2511 and slides along the corresponding arc convex surface 2517, each positioning rod 2566 presses the corresponding elastic member 2568 to elastically deform, the positioning rod 2566 retracts into the positioning hole 2556, the two third links 255 rotate and move towards the middle of the hinge body 250, so that the back surfaces of the first frame 21 and the second frame 23 approach each other, and the bendable region 31 of the flexible screen 30 bends along with the bending of the hinge body 250.

When the convex hull of the positioning rod 2562 of the first positioning member 2561 passes through the arc top of the corresponding arc convex surface 2517 in a sliding manner, part of the elastic member 2564 is elastically reset to push the positioning rod 2562 to slide into the corresponding second positioning groove 2513 along the arc convex surface 2517, and the convex hull of the pushing positioning rod 2562 is automatically positioned in the second positioning groove 2513; when the convex hull of the positioning rod 2566 of the second positioning member 2565 slidably passes over the arc top of the corresponding arc convex surface 2517, the elastic member 2568 is partially elastically restored to push the positioning rod 2566 to slide into the corresponding second positioning slot 2513 along the arc convex surface 2517, and the convex hull of the pushing positioning rod 2566 is automatically positioned in the second positioning slot 2513. At this time, the hinge main body 250 is bent, and the flexible screen 30 is bent along with the hinge device 25; the convex hulls of the first positioning element 2561 and the second positioning element 2566 are respectively clamped into the corresponding second positioning grooves 2513, so that the electronic device 100 keeps a bending state; the front faces of the second links 253, the front faces 2515 of the two first links 251 and the front faces 2552 of the two third links 255 form an arcuate arc to facilitate the fitting of the flexible screen 30.

When the electronic device 100 needs to be unfolded, the first frame 21 and the second frame 23 are pulled outward, so that the convex hulls of the positioning rods 2562 on the two opposite sides of the second link 253 are separated from the positioning of the corresponding second positioning grooves 2513 and slide along the corresponding arc convex surfaces 2517, each positioning rod 2562 extrudes the corresponding elastic piece 2564 to generate elastic deformation, the positioning rods 2562 retract into the positioning holes 2535, and the two first links 251 rotate and move towards the middle part far away from the hinge body 250; the convex hull of the positioning rod 2566 of the second positioning element 2565 on each third link 255 is separated from the positioning of the corresponding second positioning slot 2513 and slides along the corresponding arc convex surface 2517, each positioning rod 2566 presses the corresponding elastic element 2568 to elastically deform, the positioning rod 2566 retracts into the positioning hole 2556, the two third links 255 rotate and move towards the middle part far away from the hinge body 250, so that the back surfaces of the first frame body 21 and the second frame body 23 are far away from each other, and the bendable region 31 of the flexible screen 30 is flattened along with the hinge body 250.

When the convex hull of the positioning rod 2562 of the first positioning piece 2561 passes through the arc top of the corresponding arc convex surface 2517 in a sliding manner, part of the elastic piece 2564 is elastically reset to push the positioning rod 2562 to slide into the corresponding first positioning groove 2511 along the arc convex surface 2517, and the convex hull of the pushing positioning rod 2562 is automatically positioned in the first positioning groove 2511; when the convex hull of the positioning rod 2566 of the second positioning member 2565 slidably passes over the arc top of the corresponding arc convex surface 2517, the elastic member 2568 is partially elastically restored to push the positioning rod 2566 to slide into the corresponding first positioning groove 2511 along the arc convex surface 2517, and the convex hull of the pushing positioning rod 2566 is automatically positioned in the first positioning groove 2511. At this time, the hinge body 250 is completely flattened, and the flexible screen 30 is completely flattened along with the hinge body 250; the convex hulls of the first positioning member 2561 and the second positioning member 2566 are respectively snapped into the corresponding first positioning slots 2511, so that the electronic device 100 is stably maintained in a flat state.

In other embodiments, a plurality of first positioning members 2561 are respectively disposed on two opposite sides of the second link 253, and the first positioning members 2561 are arrayed along the length direction of the second link 253; one side of each first link 251 facing the second link 253 is provided with a plurality of first positioning grooves 2511 corresponding to the first positioning members 2561 and a plurality of corresponding second positioning grooves 2513. Each third link 255 is provided with a plurality of second positioning members 2565, and the second positioning members 2565 are arrayed along the length direction of the third link 255; a plurality of first positioning grooves 2511 and corresponding second positioning grooves 2513 are formed on one side of each first link 251 back to the second link 253, corresponding to the second positioning element 2565.

In other embodiments, the

positioning rods

2562 and 2566 may be elastic rods, that is, the

positioning rods

2562 and 2566 are made of a memory material that deforms under pressure, such as an elastic rubber rod, an elastic plastic rod, or an elastic silicone rod, the

elastic members

2564 and 2568 may be omitted, the

positioning rods

2562 and 2566 are inserted into the

corresponding positioning holes

2535 and 2556, and the spherical convex hulls at the second ends of the

positioning rods

2562 and 2566 are exposed out of the

positioning holes

2535 and 2556.

Referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of an electronic device according to a second embodiment of the present application; fig. 7 is an enlarged view of VII portion in fig. 6. The electronic device in the second embodiment of the present application is similar to the first embodiment, except that: in the second embodiment, a receiving hole 2567 is formed in an end surface of the positioning rod 2562 of each first positioning member 2561, which faces the corresponding elastic member 2564, along a length direction of the positioning rod 2562, and one end of the elastic member 2564 is received in the receiving hole 2567; each positioning rod 2566 of the second positioning member 2565 faces the end surface of the corresponding elastic member 2568, a receiving hole 2567 is formed along the length direction of the positioning rod 2566, and one end of the elastic member 2556 is received in the receiving hole 2567. In the embodiment, the

positioning rods

2562 and 2566 are provided with receiving holes 2567 along the length direction thereof, and one end of each of the

elastic members

2564 and 2568 can be received in the corresponding receiving hole 2567, so that the length of the

positioning holes

2535 and 2556 can be shortened, and the thickness of the hinge device 25 can be reduced.

Referring to fig. 8 and 9, fig. 8 is a schematic structural diagram of an electronic device in a third embodiment of the present application; fig. 9 is an enlarged view of portion IX in fig. 8. The electronic device in the third embodiment of the present application is similar to the first embodiment, except that: in the third embodiment, the second link 253 is provided with at least one positioning hole 2537 penetrating through two opposite side surfaces of the second link 253, and the first positioning member 2561 is installed in the positioning hole 2537. The first positioning member 2561 includes two positioning rods 2562 slidably received in the two opposite ends of the positioning hole 2537, and an elastic member 2564 disposed between the two positioning rods 2562; the elastic member 2564 elastically pushes against the two positioning rods 2562, so that the spherical convex hull of the second end of each positioning rod 2562 extends out of the opening of the positioning hole 2537. Specifically, the elastic member 2564 is a spring, and two opposite ends of the spring are respectively connected to the two positioning rods 2562.

In this embodiment, the positioning holes 2537 are parallel to the deployment plane of the hinge device 25.

In this embodiment, only one positioning hole 2537 needs to be formed in the second link 253 to mount two positioning rods 2562 on two opposite sides of the second link 253, so that the manufacturing process is saved; in addition, an elastic part is omitted, manufacturing materials are saved, and therefore production cost is reduced.

In other embodiments, the second link 253 is provided with a plurality of positioning holes 2537 arranged along the length direction thereof, two opposite ends of each positioning hole 2537 are respectively provided with a positioning rod 2562, an elastic member 2564 is disposed between two positioning rods 2562 in each positioning hole 2537, and the elastic member 2564 elastically pushes against two positioning rods 2562, so that the spherical convex hull of each positioning rod 2562 extends out of the opening of the positioning hole 2537.

Referring to fig. 10, fig. 10 is a schematic structural diagram of an electronic device in a fourth embodiment of the present application. The electronic device in the fourth embodiment of the present application is similar to the third embodiment, except that: in the fourth embodiment, each positioning rod 2562 of the first positioning member 2561 faces the end surface of the elastic member 2564, and a receiving hole 2567 is formed along the longitudinal direction of the positioning rod 2562, and opposite ends of the elastic member 2564 are received in the receiving holes 2567 of the corresponding positioning rod 2562.

Referring to fig. 11, fig. 11 is a schematic structural diagram of an electronic device in a fifth embodiment of the present application. The electronic device in the fifth embodiment of the present application is similar to the fourth embodiment, except that: in the fifth embodiment, the positioning hole 2537a includes two mounting grooves 2538 intersecting obliquely, one end of each of the two mounting grooves 2538 communicates with the inside of the second link 253, and the other end thereof passes through the side surface of the first link 215. A first positioning member 2561 is disposed in the positioning hole 2537a, the first positioning member 2561 includes positioning rods 2562 slidably disposed in the two mounting grooves 2538, and a V-shaped or U-shaped elastic member 2564 disposed in the positioning hole 2537a and connected between the two positioning rods 2562, the elastic member 2564 elastically pushes the two positioning rods 2562, so that a spherical convex hull of each positioning rod 2562 extends out of an opening of the positioning hole 2537 a.

In other embodiments, the first positioning member 2561 and the second positioning member 2565 are elastic positioning beads, the elastic positioning beads can be respectively installed in the

corresponding positioning holes

2535 and 2556, and beads of the elastic positioning beads extend out of the

corresponding positioning holes

2535 and 2556.

In other embodiments, the first positioning member 2561 and the second positioning member 2565 may be disposed on the first link 251, and the first positioning groove 2511 and the second positioning groove 2513 may be opened on the second link 253 and the third link 255.

First positioning member 2561 and second positioning member 2565 of this application embodiment can be fixed a position and the expansion position hinge device 25 respectively, and the elastic force that first positioning member 2561 and second positioning member 2565 produced can make hinge device 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 device 25 take place to deform, therefore be difficult to receive the gravity influence of itself and take place the unexpected condition of explaining or buckling.

It is to be understood that the term "relative sliding" in the present invention does not limit the direct contact and relative sliding between two elements, but may also include the relative sliding of a third-party element, and the third-party element is not limited to a solid element, such as a sheet, a film, etc., but may also include a non-solid element, such as a gap, a space, etc., or a combination of a solid element and a non-solid element; 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 kinematic relationship, regardless of the actual positions of the two elements, they can be considered to be within the scope of what is referred to herein as "relative sliding".

The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.

Claims

A hinge device comprises a first chain link, a second chain link hinged to the first chain link and a positioning mechanism, and is characterized in that the first chain link comprises a first positioning groove and a second positioning groove, the second chain link is provided with a positioning hole, the positioning mechanism comprises a positioning piece, the first end of the positioning piece is connected in the positioning hole, and the second end of the positioning piece is movably connected to the first positioning groove when the hinge device is in an unfolded state; and the second end of the positioning piece is movably connected to the second positioning groove when the hinge device is in a bent state.
The hinge assembly of claim 1, wherein the positioning hole is opened on a side of the second link facing the first link, and the positioning member is retractable in the positioning hole along a length direction of the positioning hole.
The hinge assembly of claim 2, wherein the retainer is forced by an inner surface of the first detent during the process of unfolding the hinge assembly into the folded position, a component of the force directed toward the second end causing the retainer to retract away from the first detent; the component of the force in the direction of the second positioning groove enables the second end of the positioning piece to slide towards the second positioning groove.
The hinge assembly of claim 2, wherein said positioning member is forced by an inner surface of the second detent during the bending to unfolding of the hinge assembly, the component of the force directed toward the second end causing the positioning member to retract away from the second detent; the component of the direction of the force in the first positioning groove enables the second end of the positioning piece to slide towards the first positioning groove.
The hinge assembly of claim 1, wherein the positioning member includes a positioning rod slidably received in the positioning hole, and an elastic member received in the positioning hole, the elastic member pushing against the positioning rod to extend the second end of the positioning rod out of the opening of the positioning hole, so that the second end of the positioning rod elastically abuts against the first positioning groove or the second positioning groove.
The hinge assembly of claim 5, wherein the positioning hole is a blind hole, the elastic member and the positioning rod are received in the positioning hole, and the elastic member abuts between the positioning rod and an end surface of the positioning hole.
The hinge assembly of claim 5, wherein the positioning rod has a receiving hole along a length direction thereof facing an end surface of the elastic member, and one end of the elastic member is received in the receiving hole.
The hinge assembly of claim 5, wherein the resilient member is a spring.
The hinge assembly of claim 1, wherein the inner surfaces of the first and second detents are arcuate surfaces having a radius of curvature such that the detent is securable within the detent.
The hinge assembly of claim 9, wherein the first detent and the second detent are connected by a convex arcuate surface, and the second end of the detent lever slides over the convex arcuate surface to automatically position the detent in the first detent or the second detent.
The hinge assembly of claim 1, wherein the positioning member is a positioning rod disposed in the positioning hole, and the positioning rod is made of a memory material that deforms under pressure.
The hinge assembly of claim 1, wherein each of the opposing sides of the second link is provided with one of the first links, the positioning hole is a through hole passing through each of the opposing sides of the second link, a positioning member is disposed in the through hole, the positioning member includes two positioning rods and an elastic member, first ends of the two positioning rods are received in the through holes, the elastic member is disposed between the first ends of the two positioning rods, and the elastic member elastically pushes the two positioning rods so that the first end of each positioning rod extends out of the opening of the positioning hole.
The hinge assembly of claim 12, wherein the alignment aperture is parallel to a deployment plane of the hinge assembly.
The hinge assembly of claim 12, wherein each of the positioning rods of the positioning member has an end surface facing the elastic member and a receiving hole along a length direction of the positioning rod, and opposite ends of the elastic member are received in the receiving holes of the two positioning rods.
A housing comprising a frame, characterized in that the housing further comprises a hinge device according to any one of claims 1-14, which is arranged on the frame.
An electronic device comprising a flexible screen, wherein the electronic device further comprises a housing according to claim 15, and wherein the flexible screen is disposed on the housing.