WO2020124378A1

WO2020124378A1 - Hinge device, shell, and electronic device

Info

Publication number: WO2020124378A1
Application number: PCT/CN2018/121822
Authority: WO
Inventors: 欧阳烁; 陈松亚; 凡小飞
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-06-25
Also published as: CN112703326A

Abstract

Disclosed are a hinge device (25), a shell (20) of an electronic device, and the electronic device (100). A flexible screen (30) is arranged on the shell (20). The shell (20) comprises frame bodies (21, 23) and the 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), a second chain link (253) hinged to the first chain link (251), and a positioning mechanism (256). The first chain link (251) comprises a first positioning groove (2511) and a second positioning groove (2513); the second chain link (253) is provided with a positioning hole (2532); the positioning mechanism (256) comprises a positioning piece (2561); and a first end of the positioning piece (2561) is connected in the positioning hole (2532). When the hinge device (25) is in an extension state, a second end of the positioning piece (2561) is movably connected in the first positioning groove (2511), and when the hinge device (25) is in a bending state, the second end of the positioning piece (2561) is movably connected in the second positioning groove (2513). The positioning piece enables the hinge device to be stably kept in the extension state or the bending state, so that the positioning effect is good.

Description

Hinge device, housing and electronic device

Technical field

The present application relates to the field of flexible screen support, in particular to a hinge device supporting a flexible screen, a housing provided with the hinge device, and an electronic device provided with the housing.

Background technique

Compared with traditional display devices, flexible display screens have the advantages of being bendable, not easily damaged, and flexible, and are therefore widely favored by consumers. The electronic device of the existing folding display screen generally supports and bends the flexible screen through a hinge. The hinge is generally composed of several link links, and the links are all movable links. Existing hinges generally use damping plates to position the rotary shaft of the hinge in a circumferential torque, that is, when the external torque applied on the rotary shaft does not exceed the specified torque, the rotary shaft will not rotate, thereby achieving the positioning of the rotary shaft. However, the rotating shaft will cause the damping sheet to open and close frequently during the rotation process, which is easy to deform the damping sheet, resulting in poor positioning effect.

Summary of the invention

The present application provides a hinge device with good positioning effect, a housing provided with the hinge device, and an electronic device provided with the housing.

A hinge device provided by the present application includes a first link, a second link hinged to the first link, and a positioning mechanism, the first link includes a first positioning groove and a second positioning Groove, the second link is provided with a positioning hole, the positioning mechanism includes a positioning member, the first end of the positioning member is connected to the positioning hole, the hinge device is in the expanded state, the positioning The second end of the member is movably connected to the first positioning groove; when the hinge device is in a bent state, the second end of the positioning member is movably connected to the second positioning groove.

The present application also provides a case including a frame body and a hinge device, the hinge device is disposed on the frame body, the hinge device includes a first link, and a second chain hinged to the first link Link, and a positioning mechanism, the first link includes a first positioning slot and a second positioning slot, the second link is provided with a positioning hole on the side facing the first link, the positioning mechanism includes A positioning member, the first end of the positioning member is connected to the positioning hole, the hinge device is in a deployed state, and the second end of the positioning member is movably connected to the first positioning groove; the hinge device In the bent state, the second end of the positioning member is movably connected to the second positioning groove.

The present application also provides an electronic device including a flexible screen and a housing, the flexible screen is disposed on the housing, the housing includes a frame and a hinge device, the hinge device is disposed on the frame , The hinge device includes a first link, a second link hinged to the first link, and a positioning mechanism, the first link includes a first positioning slot and a second positioning slot, the second A side of the chain link facing the first chain link is provided with a positioning hole, the positioning mechanism includes a positioning member, the first end of the positioning member is connected to the positioning hole, and the hinge device is in an unfolded state , The second end of the positioning member is movably connected to the first positioning slot; when the hinge device is in a bent state, the second end of the positioning member is movably connected to the second positioning slot.

The hinge device of the electronic device of the present application includes a chain link and a positioning mechanism, the chain link includes a first positioning groove and a second positioning groove, the positioning mechanism includes a positioning member, and the positioning device is in the expanded state, the positioning member The second end of is movably connected to the first positioning groove; when the hinge device is in a bent state, the second end of the positioning member is movably connected to the second positioning groove. Therefore, the positioning member can stably maintain the unfolded state or the bent state of the hinge device, and the positioning effect is good.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present invention, the drawings required in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

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

FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1.

FIG. 3 is a partially enlarged view of the electronic device in FIG. 2.

FIG. 4 is an enlarged view of part IV in FIG. 3.

FIG. 5 is a schematic diagram of the result of the bending state of the electronic device in FIG. 2.

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

7 is an enlarged view of part VII in FIG. 6.

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 part IX in FIG. 8.

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

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 described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work 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", and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience. The present invention is described and the description simplified, rather than implying or indicating that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as limiting the present invention.

Please refer to FIGS. 1 to 4 together. FIG. 1 is a schematic perspective view of the electronic device in the first embodiment of the present application; FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1; FIG. 3 is a diagram of FIG. Partially enlarged view of the electronic device; FIG. 4 is an enlarged view of part IV in FIG. 3. The electronic device 100 in the first embodiment of the present application includes a casing 20 and a flexible screen 30 disposed on the casing 20. The casing 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 disposed on the first frame 21, the second frame 23 and the hinge device 25. The flexible screen 30 is provided with a bendable area 31 corresponding to the hinge device 25 and two non-bendable areas 33 connected to opposite sides of the bendable area 31. The hinge device 25 is used to support the flexible screen 30. The hinge device 25 includes at least a first link 251, a second link 253 hinged to the first link 251, and a positioning In mechanism 256, the chain link 251 includes a first positioning slot 2511 and a second positioning slot 2513. The side of the second link 253 facing the first link 251 is provided with a positioning hole 2535. The positioning mechanism 256 includes at least one positioning member 2561, the first end of the positioning member 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 groove 2511; in the bent state, the second end of the positioning member 2561 is movably connected to the second positioning groove 2513.

In this embodiment, the hinge device 25 includes a hinge body 250 having several links, the hinge body 250 is located between the first frame 21 and the second frame 23, the hinge body 250 One side is connected to the first frame body 21, the other side opposite to the hinge body 250 is connected to the second frame body 23, and the positioning mechanism 256 is used to position 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 hinged to the two first links 251 respectively facing away Two third links 255 on one side of the second link 253. The positioning mechanism 256 includes a plurality of first positioning members 2561 and a plurality of second positioning members 2565. A first positioning member 2561 is provided between each first link 251 and the second link 253, and each third link 255 corresponds to A second positioning member 2565 is provided between the first chain links 251 of. The positioning mechanism 256 is used to position the hinge device 25 in the expanded state or the bent state, that is, the positioning mechanism 256 can maintain the expanded state or the bent 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 with the hinge device 25; when the hinge device 25 is in the folded state, the flexible screen 30 is in the folded state with the hinge device 25.

The bending axis of the hinge device 25 of the present application is not limited to a physical axis, but may also be a non-physical axis, that is, a virtual axis, as long as the hinge body 250 can bend around the axis can be considered as a bending axis.

The positioning mechanism 256 of the electronic device 100 in this application is satisfied in any state: the length of the positioning mechanism 256 without external force is greater than the distance between the first positioning groove 2511/second positioning groove 2513 and the positioning hole 2535, thereby In either state, the

positioning grooves

2511, 2513 and the positioning holes 2535 are stressed, so that the positioning mechanism 256 plays a positioning role.

In this embodiment, the electronic device 100 is a mobile phone. It can be understood that, in other embodiments, the electronic device 100 may be, but not limited to, a PDA of a radiotelephone, pager, web browser, memo pad, calendar, and/or global positioning system (GPS) receiver.

A first positioning member 2561 is provided between the first link 251 and each second link 253 of the hinge device 25 of the electronic device 100 of the present application; between each first link 251 and the corresponding third link 255 Each is provided with a second positioning member 2565; the positioning mechanism 256 positions the hinge device 25 in the unfolded state or the bent state through the first positioning member 2561 and the second positioning member 2565. The first link 251 includes a first positioning slot 2511 and a second positioning slot 2513. The first end of the positioning member 2561 is received in the positioning hole 2535. When the hinge device 25 is in the expanded state, the The second end of the positioning element 2561 is movably connected to the first positioning groove 2511; when the hinge device is in a bent state, the second end of the positioning element 2561 is movably connected to the second positioning groove 2513. Therefore, the positioning mechanism 256 can stably maintain the hinge device 25 in the unfolded state or the bent state, and the positioning effect is good.

At least one first positioning member 2561 is provided on two opposite sides of the second link 253, and the first positioning groove 2511 and the second positioning groove 2513 are disposed on each first link 251 facing the second link 253 side. The first positioning member 2561 is retractable in the positioning hole 2535 along the length direction of the positioning hole 2535. In the unfolded state of the hinge device 25, the first positioning member 2561 elastically abuts against the first positioning groove 2511, so that the hinge device 25 can stably maintain the unfolded state; in the bent state of the hinge device 25, the first positioning member 2561 elastically resists Against the second positioning groove 2513, so that the hinge device 25 can stably maintain the bent state; during the hinge device 25 is unfolded to the bending process, the first positioning member 2561 receives the force of the inner surface of the first positioning groove 2511, The component of the force oriented at the second end of the first positioning member 2561 causes the first positioning member 2561 to contract away from the first positioning slot 2511, and the component of the force oriented at the second positioning slot 2513 causes the first positioning member 2561 to The two ends slide toward the second positioning groove 2513; the hinge device 25 is bent to the unfolding process, the first positioning member 2561 receives the force of the inner surface of the second positioning groove 2513, the direction of the force is on the first positioning member The component of the second end of 2561 causes the first positioning member 2561 to contract away from the second positioning slot 2513; the component of the force directed at the first positioning slot 2511 causes the second end of the first positioning member 2561 to face the first positioning slot 2511 slide.

In this embodiment, the cross-section of the second link 253 is waist-shaped or elliptical, that is, both sides of the second link 253 facing the two first links 251 are arc surfaces 2531, and the positioning holes 2535 are opened in 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-shaped surfaces 2531 respectively connected to opposite sides of the front surface 2532 corresponding to the back surface 2533 Between the sides. Each arc surface 2531 is provided with the positioning hole 2535 on the side away from the flexible screen 30, and each positioning hole 2535 is a blind hole, and the blind hole extends obliquely from the back surface 2533 of the second link 253 toward the front surface 2532 The first positioning member 2561 is slidably received in the positioning hole 2535.

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

Each first link 251 includes a front surface 2515 attached to the back of the flexible screen 30, a bottom surface 2516 facing away from the flexible screen 30, and connected between two opposite sides of the front surface 2515 and the opposite sides of the bottom surface 2516 Two sides. Each side of the first 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 all arc surfaces, and the first positioning groove 2511 is adjacent to On the bottom surface 2516, the second positioning groove 2513 is adjacent to the front surface 2515, and a circular arc transitions between the first positioning groove 2511 and the second positioning groove 2513. That is, the first positioning groove 2511 and the second positioning groove 2513 on the same side are connected by an arc convex surface 2517, and the second end of the elastic positioning member 2561 can slide over the arc convex surface 2517 to be automatically positioned at the first A positioning groove 2511 or a second positioning groove 2513. The radius of curvature of the arcs of the inner surfaces of the first positioning groove 2511 and the second positioning groove 2513 can satisfy that the first positioning member 2561 can be fixed in the groove. If the curvature radius of the positioning groove is too small, the first positioning member 2561 cannot be It is located in the positioning groove; if the radius of curvature of the positioning groove is too large, the end of the first positioning member 2561 cannot be relatively moved in the positioning groove. The front surface 2515 of each first link 251 is an arc surface, which is convenient to fit the back surface of the flexible screen 30 after bending.

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 surface connected between the front surface 2552 and the bottom surface 2554 and facing the corresponding second connection node 251 The arc surface is 2555. At least one positioning hole 2556 is defined on the arc surface 2555, and the second positioning member 2565 is disposed in the positioning hole 2556. Specifically, the arc surface 2555 is provided with the positioning hole 2556 on the side away from the flexible screen 30, the positioning hole 2556 is a blind hole, and the blind hole extends obliquely from the bottom surface 2554 of the third link 253 toward the front surface 2552, The second positioning member 2565 is received 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 positioning rod 2562 Two ends protrude from 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. The convex hull 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或第二定位槽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, the structure of each second positioning element 2565 is the same as that of the first positioning element 2561, that is, it includes a positioning rod 2566 slidably received in the corresponding positioning hole 2556, and an elastic element 2568, which accommodates the elastic element 2568 In the positioning hole 2556 and push the positioning rod 2566, so that the second end of the positioning rod 2566 extends out of the opening of the positioning hole 2556, so that the second end of the positioning rod 2566 elastically abuts the corresponding The first link 251 faces away from the first positioning groove 2511 or the second positioning groove 2513 of the second link 253. The second end of the positioning rod 2566 is a spherical convex hull. 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 at 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 is connected to the corresponding third link 255.

Please refer to FIG. 3 to FIG. 5 together. FIG. 5 is a schematic diagram of the end of the bent state of the electronic device in FIG. 2. When the hinge device 25 is in a flat state, the second link 253, the first link 251, and the third link 255 are on the same plane, and the positioning lever 2562 of the first positioning member 2561 on the opposite sides of the second link 253 Respectively elastically abutting on the first positioning grooves 2511 on the two first links 251 facing the second links 253; the positioning rods 2566 of the second positioning members 2565 on the two third links 255 elastically abutting respectively On the first positioning grooves 2511 of the two first links 251 facing away from the second links 253, the hinge device 25 is kept flat and the flexible screen 30 is kept flat.

When bending the electronic device 100, the bending force applied to the electronic device 100 causes the convex hulls of the positioning rods 2562 on opposite sides of the second link 253 to disengage from the corresponding first positioning groove 2511. Positioning and sliding along the corresponding arc convex surface 2517, each positioning rod 2562 squeezes the corresponding elastic member 2564 to undergo elastic deformation, the positioning rod 2562 is retracted into the positioning hole 2535, and the two first links 251 rotate toward the hinge The middle of the main body 250 moves; the convex hull of the positioning rod 2566 of the second positioning member 2565 on each third link 255 disengages from the positioning of the corresponding first positioning groove 2511 and slides along the corresponding arc convex surface 2517, each The positioning rod 2566 squeezes the corresponding elastic member 2568 to elastically deform, the positioning rod 2566 is retracted into the positioning hole 2556, the two third links 255 rotate to move toward the middle of the hinge body 250, so that the first frame 21 Close to the back of the second frame 23, the bendable area 31 of the flexible screen 30 bends as the hinge body 250 bends.

When the convex hull of the positioning rod 2562 of the first positioning member 2561 slides over the arc top of the corresponding arc convex surface 2517, the elastic member 2564 partially elastically resets and pushes the positioning rod 2562 to slide along the arc convex surface 2517 into the corresponding second In the positioning groove 2513, and the convex hull of the pushing 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 slides across the arc of the corresponding arc convex surface 2517 After pushing, the elastic member 2568 partially elastically resets and pushes the positioning rod 2566 to slide into the corresponding second positioning groove 2513 along the arc convex surface 2517, and the convex hull of the pushing positioning rod 2566 is automatically positioned in the second positioning groove 2513 Inside. At this time, the hinge body 250 is bent, and the flexible screen 30 is bent along with the hinge device 25; the convex hulls of the first positioning member 2561 and the second positioning member 2566 respectively snap into corresponding second positioning slots Within 2513, the electronic device 100 is kept bent; the front surface of the second link 253, the front surfaces 2515 of the two first links 251 and the front surfaces 2552 of the two third links 255 are formed The arc-shaped arc surface is convenient for fitting 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 to disengage the convex hulls of the positioning rods 2562 on opposite sides of the second link 253 The corresponding second positioning groove 2513 is positioned and slides along the corresponding arc convex surface 2517. Each positioning rod 2562 squeezes the corresponding elastic member 2564 to undergo elastic deformation. The positioning rod 2562 is retracted into the positioning hole 2535. A chain link 251 rotates and moves away from the middle of the hinge body 250; the convex hull of the positioning rod 2566 of the second positioning member 2565 on each third link 255 disengages from the positioning of the corresponding second positioning groove 2513 and corresponds The arc-shaped convex surface 2517 slides, and each positioning rod 2566 squeezes the corresponding elastic member 2568 to elastically deform. The positioning rod 2566 is retracted into the positioning hole 2556. The two third links 255 rotate away from the hinge body 250 The middle portion moves so that the back surfaces of the first frame body 21 and the second frame body 23 are away from each other, and the bendable area 31 of the flexible screen 30 is flattened with the hinge body 250.

When the convex hull of the positioning rod 2562 of the first positioning member 2561 slides over the arc top of the corresponding arc convex surface 2517, the elastic member 2564 partially elastically resets to push the positioning rod 2562 to slide along the arc convex surface 2517 into the corresponding first In the positioning groove 2511, and the convex hull of the pushing 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 slides across the arc of the corresponding arc convex surface 2517 After the top, the elastic member 2568 partially elastically resets and pushes the positioning rod 2566 along the arc convex surface 2517 into the corresponding first positioning groove 2511, and the convex hull of the thrust positioning rod 2566 is automatically positioned in the first positioning groove 2511 Inside. At this time, the hinge body 250 is completely flattened, and the flexible screen 30 is completely flattened 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 In 2511, the electronic device 100 is maintained in a stable and flat state.

In other embodiments, the two opposite sides of the second link 253 are respectively provided with a plurality of first positioning members 2561, which are arrayed along the length of the second link 253; each first link 251 faces A plurality of first positioning grooves 2511 corresponding to the first positioning member 2561 and corresponding second positioning grooves 2513 are opened toward the side of the second link 253. Each third link 255 is provided with a plurality of second positioning members 2565, which are arrayed along the length of the third link 255; each first link 251 faces away from a side of the second link 253 A plurality of first positioning grooves 2511 and corresponding second positioning grooves 2513 are opened on the side corresponding to the second positioning member 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 deformed under pressure, such as elastic rubber rods, elastic plastic rods or elastic silicone rods. The

pieces

2564 and 2568 can be omitted, the

positioning rods

2562 and 2566 are inserted into the

corresponding positioning holes

2535 and 2556, and the spherical protrusions at the second ends of the

positioning rods

2562 and 2566 expose the

positioning holes

2535 and 2556.

Please refer to FIGS. 6 and 7. 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 part VII 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, the positioning rod 2562 of each first positioning member 2561 faces the end surface of the corresponding elastic member 2564 A receiving hole 2567 is provided along the length of the positioning rod 2562, one end of the elastic member 2564 is received in the receiving hole 2567; the positioning rod 2566 of each second positioning member 2565 faces the end surface of the corresponding elastic member 2568 along the A receiving hole 2567 is opened in the longitudinal direction of the positioning rod 2566, and one end of the elastic member 2556 is received in the receiving hole 2567. The

positioning rods

2562 and 2566 in this embodiment are provided with accommodating holes 2567 along their lengths. One end of the

elastic members

2564 and 2568 can be accommodated in the corresponding accommodating holes 2567, thereby shortening the length of the

positioning holes

2535 and 2556 and enabling the hinge The thickness of the device 25 becomes thinner.

Please refer to FIGS. 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 part 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 two opposite sides penetrating through the second link 253 At least one positioning hole 2537, and a first positioning member 2561 is installed in the positioning hole 2537. The first positioning member 2561 includes two positioning rods 2562 slidingly closed at opposite ends of the positioning hole 2537, and an elastic member 2564 located between the two positioning rods 2562; the elastic member 2564 elastically pushes the two positioning rods 2562, The spherical protrusion of the second end of each positioning rod 2562 protrudes from the opening of the positioning hole 2537. Specifically, the elastic member 2564 is a spring, and opposite ends of the spring are respectively connected to the two positioning rods 2562.

In this embodiment, the positioning hole 2537 is parallel to the unfolding plane of the hinge device 25.

In this embodiment, only one positioning hole 2537 is needed on the second link 253 to install two positioning rods 2562 on opposite sides of the second link 253, saving the manufacturing process; in addition, it is also omitted An elastic part saves manufacturing materials, thereby reducing production costs.

In other embodiments, the second link 253 has a plurality of positioning holes 2537 arrayed along its length. Each positioning hole 2537 has two positioning rods 2562 at opposite ends, and each positioning hole 2537 is located between two positioning rods 2562. An elastic member 2564 is disposed between the elastic members 2564, which elastically pushes the 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.

Please refer to FIG. 10, which 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 along A receiving hole 2567 is opened in the longitudinal direction of the positioning rod 2562, and opposite ends of the elastic member 2564 are received in the corresponding receiving hole 2567 of the positioning rod 2562.

Please refer to FIG. 11, which 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 channels 2538 that obliquely intersect, and two mounting channels 2538 One end of is connected in the second link 253, and the other end penetrates the side of the first link 215, respectively. A first positioning member 2561 is provided in the positioning hole 2537a. The first positioning member 2561 includes a positioning bar 2562 that is slidably disposed in the two mounting channels 2538, and a positioning hole 2537a that is located between the two positioning bars 2562 There is a V-shaped or U-shaped elastic member 2564, which elastically pushes the two positioning rods 2562, so that the spherical protrusion of each positioning rod 2562 extends out of the opening of the positioning hole 2537a.

In other embodiments, the first positioning element 2561 and the second positioning element 2565 are both elastic positioning beads. The elastic positioning beads can be installed in the

corresponding positioning holes

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

corresponding Positioning holes

2535, 2556.

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

The first positioning member 2561 and the second positioning member 2565 of the embodiment of the present application can position the hinge device 25 at the bending position and the unfolding position, respectively. The elastic force generated by the first positioning member 2561 and the second positioning member 2565 can make the hinge The state of the device 25 at the bending position and the unfolding position is relatively stable, that is, a certain initial force needs to be applied to deform the hinge device 25, so that it is not easily affected by its own gravity to accidentally expand or bend.

Understandably, the term “relative sliding” in the present invention does not limit the direct contact and relative sliding between two components, but may also include relative sliding between third-party components, and the third-party components are not limited to physical components, such as tablets. Materials, membranes, etc., but can also contain non-physical components, such as gaps, spaces, etc., or a combination of physical and non-physical components; third-party components are not limited to one, but can include multiple. That is to say, as long as the two elements have a relative sliding motion relationship, regardless of the actual positions of the two elements, they can be regarded as within the scope of the “relative sliding” referred to in the present invention.

The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and retouches can be made. These improvements and retouches are also regarded as The scope of protection of the invention.

Claims

A hinge device includes a first link, a second link hinged to the first link, and a positioning mechanism, characterized in that the first link includes a first positioning slot and a second A positioning slot, the second link is provided with a positioning hole, the positioning mechanism includes a positioning member, the first end of the positioning member is connected to the positioning hole, and the hinge device is in an unfolded state, the The second end of the positioning member is movably connected to the first positioning slot; when the hinge device is in a bent state, the second end of the positioning member is movably connected to the second positioning slot.
The hinge device according to claim 1, wherein the positioning hole is opened on a side of the second link facing the first link, and the positioning member is positioned along the inside of the positioning hole The longitudinal direction of the positioning hole is telescopic.
The hinge device according to claim 2, characterized in that, from the unfolding to the bending process of the hinge device, the positioning member receives a force from the inner surface of the first positioning groove, and the component of the force toward the second end causes The positioning member shrinks away from the first positioning slot; the direction of the force is in the component of the second positioning slot, causing the second end of the positioning member to slide toward the second positioning slot.
The hinge device according to claim 2, characterized in that the hinge device is subjected to a force from the inner surface of the second positioning groove during bending to unfolding, and the force is directed to the component at the second end so that The positioning member shrinks away from the second positioning slot; the direction of the force is in the component of the first positioning slot, causing the second end of the positioning member to slide toward the first positioning slot.
The hinge device 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 the positioning A rod, so that the second end of the positioning rod extends out of the opening of the positioning hole, so that the second end of the positioning rod elastically bears against the first positioning groove or the second positioning groove.
The hinge device according to 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 on the positioning rod and the positioning hole Between the end faces.
The hinge device according to claim 5, characterized in that an end surface of the positioning rod facing the elastic member is provided with a receiving hole along the longitudinal direction, and one end of the elastic member is received in the receiving hole.
The hinge device according to claim 5, wherein the elastic member is a spring.
The hinge device according to claim 1, wherein the inner surfaces of the first positioning groove and the second positioning groove are circular arc surfaces, and the curvature radius of the circular arc surface satisfies that the positioning rod can be fixed in the groove.
The hinge device according to claim 9, wherein the first positioning groove and the second positioning groove are transitionally connected by an arc convex surface, and the second end of the positioning rod can slide over the arc convex surface Automatically positioned on the first positioning groove or the second positioning groove.
The hinge device according to claim 1, wherein the positioning member is a positioning rod provided in the positioning hole, and the positioning rod is made of a memory material deformed by compression.
The hinge device according to claim 1, wherein the two opposite sides of the second link are respectively provided with one of the first links, and the positioning hole penetrates the opposite sides of the second link The through hole is provided with a positioning member. The positioning member includes two positioning rods and an elastic member. The first ends of the two positioning rods are received in the through hole, and the elastic member is located on both sides. Between the first ends of the positioning rods, 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 device according to claim 12, wherein the positioning hole is parallel to an unfolding plane of the hinge device.
The hinge device according to claim 12, wherein each positioning rod of the positioning member faces an end surface of the elastic member and defines a receiving hole along the length of the positioning rod, and the opposite ends of the elastic member are accommodated in two In the receiving hole of the positioning rod.
A casing comprising a frame, characterized in that the casing further comprises the hinge device according to any one of claims 1-14, the hinge device being provided on the frame.
An electronic device includes a flexible screen, wherein the electronic device further includes the housing according to claim 15, the flexible screen being disposed on the housing.