CN112640399A

CN112640399A - Hinge device and electronic device

Info

Publication number: CN112640399A
Application number: CN201980049341.9A
Authority: CN
Inventors: 余华灵; 陈松亚; 欧阳烁; 凡小飞
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2018-12-21
Filing date: 2019-02-28
Publication date: 2021-04-09
Also published as: CN112639665A; CN210183680U; CN210223369U; WO2020124789A1; CN113016022A; WO2020124788A1; WO2020124605A1

Abstract

The hinge device comprises a first hinge joint, a second hinge joint, a third hinge joint and a linkage mechanism, wherein the first hinge joint and the second hinge joint are hinged on two opposite sides of the third hinge joint, the linkage mechanism is positioned on the third hinge joint, and the first hinge joint is movably connected with the second hinge joint through the linkage mechanism so that the first hinge joint can drive the second hinge joint to synchronously rotate relative to the third hinge joint.

Description

Hinge device and electronic device

Technical Field

The present disclosure relates to electronic devices, and particularly to a hinge device and an electronic device.

Background

Compared with the traditional display device, the flexible display screen has the advantages of being foldable, curved, flexible, stretchable and the like, and is widely favored by consumers. In the prior art, when the flexible display device is folded, the bending processes of two sides of the flexible display device are asymmetric, so that the bending effect is poor.

Disclosure of Invention

The technical problem that this application will be solved provides a hinge device and electron device for solve among the prior art folding flexible display device and bend the not good problem of effect.

In order to solve the technical problem, on the one hand, a hinge device is provided, which includes a first hinge joint, a second hinge joint, a third hinge joint and a linkage mechanism, wherein the first hinge joint and the second hinge joint are hinged on two opposite sides of the third hinge joint, the linkage mechanism is located on the third hinge joint, and the first hinge joint is movably connected with the second hinge joint through the linkage mechanism, so that the first hinge joint can drive the second hinge joint to synchronously rotate relative to the third hinge joint.

In another aspect, an electronic device is provided, which includes a flexible display screen and a hinge device, wherein the flexible display screen is disposed on the hinge device.

The beneficial effect of this application is as follows: when the first hinge joint rotates relative to the third hinge joint, the first hinge joint is acted by the linkage mechanism, the second hinge joint synchronously rotates relative to the third hinge joint, the moving processes of the first hinge joint and the second hinge joint are synchronous, the bending effect of the hinge device is good, the folding and flattening processes of the electronic equipment are corresponded, the acting forces of the first hinge joint and the second hinge joint to the flexible display screen are symmetrical and uniform, the improvement of the bending effect of the flexible display screen is facilitated, and the flexible display screen is prevented from being damaged due to uneven stress.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

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

Fig. 2 is a perspective view of the hinge device in a deployed state.

Fig. 3 is a perspective view of the hinge device in a bent state.

Fig. 4 is a perspective view of a partial structure of the hinge device.

Fig. 5 is an exploded view of the hinge assembly of fig. 4.

Fig. 6 is a perspective view of the first rotating assembly.

Fig. 7 is a perspective view of the second rotating assembly.

Fig. 8 is a partial exploded view of the first rotating assembly.

Fig. 9 is a partial exploded view of the second rotating assembly.

FIG. 10 is a perspective view of a third hinge link.

FIG. 11 is a perspective view of a first hinge knuckle.

FIG. 12 is a perspective view of a second knuckle.

FIG. 13 is a top view of a hinge assembly according to one embodiment.

Fig. 14 is an enlarged view of the position a in fig. 13.

Fig. 15 is a perspective view of the hinge device when deployed.

Fig. 16 is a perspective view of the hinge device when bent.

Fig. 17 is a top view of another embodiment of a hinge assembly.

Fig. 18 is a top view of another embodiment of a hinge assembly.

Fig. 19 is a top view of another embodiment of a hinge assembly.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

The embodiment of the application provides a display device, and the display device is used for displaying images. Specifically, the display device may be an electronic device having only a display function, such as a display, or may be an electronic device integrated with a touch function, or of course, the electronic device may be a smart device such as a mobile phone or a tablet computer having a communication function.

Referring to fig. 1 to 3 together, fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present disclosure, and fig. 2 and 3 are schematic perspective views of a hinge device 200 of the electronic device in fig. 1, in which the hinge device 200 shown in fig. 2 is in an unfolded state and the hinge device 200 shown in fig. 3 is in a folded state. The electronic device 100 provided by the embodiment of the present application includes a hinge device 200 and a flexible display screen 300 disposed on the hinge device 200. The flexible display screen 300 is disposed on the hinge device 200. The flexible display screen 300 includes a bendable region 300a, and two non-bendable regions 300b connected to opposite sides of the bendable region 300a, the bendable region 300a being bent or unfolded as the hinge device 200 is bent or unfolded. The hinge device 200 is used to support the flexible display screen 300.

In this embodiment, the hinge device 200 includes a first hinge joint 202, a second hinge joint 204, and a third hinge joint 206, the first hinge joint 202 and the second hinge joint 204 are located on opposite sides of the third hinge joint 206, and the first hinge joint 202 and the second hinge joint 204 are both movably connected to the third hinge joint 206. In one embodiment, the first hinge joint 202, the second hinge joint 204, and the third hinge joint 206 are made of the same material, such as metal, plastic, etc., and further, the first hinge joint 202, the second hinge joint 204, and the third hinge joint 206 may be formed by machining from a blank or by injection molding.

In one aspect, the first hinge joint 202 and the second hinge joint 204 are both rotatably connected to the third hinge link 206, that is, the first hinge joint 202 can rotate relative to the third hinge link 206, and the second hinge joint 204 can also rotate relative to the third hinge link 206, so that the hinge device 200 can be folded or unfolded.

On the other hand, the first hinge joint 202 and the second hinge joint 204 are both slidably connected to the third hinge link 206, that is, the first hinge joint 202 can slide relative to the third hinge link 206, and the second hinge joint 204 can also slide relative to the third hinge link 206.

Referring to fig. 4 and 5, fig. 4 is a perspective view of a partial structure of a hinge device 200 according to an embodiment of the present disclosure, and fig. 5 is an exploded view of the hinge device 200 of fig. 4. In this embodiment, the hinge assembly 200 further includes a linkage 400, and the first hinge joint 202 is movably connected to the second hinge joint 204 via the linkage 400. Specifically, the linkage 400 is disposed on the third hinge link 206, the first hinge joint 202 is rotatably connected to the linkage 400, and the second hinge joint 204 is rotatably connected to the linkage 400.

When the first hinge knuckle 202 rotates relative to the third hinge knuckle 206, under the action of the linkage mechanism 400, the second hinge knuckle 204 rotates relative to the third hinge knuckle 206 synchronously, the moving processes of the first hinge knuckle 202 and the second hinge knuckle 204 are synchronous, the bending effect of the hinge device 200 is good, the first hinge knuckle 202 and the second hinge knuckle 204 are symmetrical and uniform to the acting force of the flexible display screen 300 corresponding to the folding and flattening processes of the electronic device 100, the bending effect of the flexible display screen 300 is improved, and the flexible display screen 300 is prevented from being damaged due to uneven stress.

Further, the first hinge knuckle 202 rotates in the opposite direction to the second hinge knuckle 204 to allow the hinge device 200 to achieve the folded and unfolded state.

Referring to fig. 4, in the present embodiment, the hinge device 200 further includes a first rotating component 22 and a second rotating component 24, the first hinge joint 202 is rotatably connected to the third hinge link 206 through the first rotating component 22, the second hinge joint 204 is rotatably connected to the third hinge link 206 through the second rotating component 24, and both the first rotating component 22 and the second rotating component 24 are slidably connected to the third hinge link 206, so that when the first hinge joint 202 and the second hinge joint 204 rotate relative to the third hinge link 206, the first hinge joint 202 and the second hinge joint 204 approach or move away from each other.

When the first hinge joint 202 and the second hinge joint 204 are bent relative to the third hinge link 206, the first hinge joint 202 and the second hinge joint 204 are close to each other, and when the first hinge joint 202 and the second hinge joint 204 are unfolded relative to the third hinge link 206, the first hinge joint 202 and the second hinge joint 204 are far away from each other, so that the influence of different bending radiuses at different positions of the hinge device 200 on the bending effect is avoided, the hinge device 200 can be bent at a larger angle, the bending effect is good, and when the folding and flattening states of the electronic device 100 are corresponded, the distance change of the first hinge and the second hinge compensates the relative displacement of the hinge device 200 and the flexible display screen 300, so that the flexible display screen 300 has a better supporting effect.

Further, when the hinge device 200 is bent, the first hinge joint 202 is close to the second hinge joint 204, the first hinge joint 202 and the second hinge joint 204 can rotate relatively to form an included angle of 0 degree, at this time, the first hinge joint 202 and the second hinge joint 204 are closely attached and stacked, the sum of the volumes of the first hinge joint 202 and the second hinge joint 204 is small, the bending diameter of the flexible display screen 300 located at the outer sides of the first hinge joint 202 and the second hinge joint 204 is the sum of the thicknesses of the first hinge joint 202 and the second hinge joint 204, and the flexible display screen 300 can be bent to a double-folding state, so that the bending effect of the flexible display screen 300 is improved; when the hinge device 200 is unfolded, the first hinge joint 202 and the second hinge joint 204 are far away, and the supporting surface of the flexible display screen 300 by the first hinge joint 202, the second hinge joint 204 and the third hinge joint 206 is increased, so that the support of the hinge device 200 on the flexible display screen 300 is improved, and the flattening effect of the flexible display screen 300 is improved.

In this embodiment, the first rotating assembly 22 is movably connected between the first hinge joint 202 and the linkage 400, the second rotating assembly 24 is movably connected between the second hinge joint 204 and the linkage 400, and when the first hinge joint 202 rotates relative to the third hinge joint 206 via the first rotating assembly 22, the linkage 400 drives the second hinge joint 204 to rotate relative to the third hinge joint 206 via the second rotating assembly 24. Specifically, rotation of first rotating assembly 22 relative to third hinge link 206 may be converted into rotation of first hinge joint 202 relative to third hinge link 206, and rotation of second rotating assembly 24 relative to third hinge link 206 may be converted into rotation of second hinge joint 204 relative to third hinge link 206, so that, through the action of linkage 400, when one of first hinge joint 202 and the second hinge rotates, the other hinge joint may also rotate synchronously.

Referring to fig. 4 to 9, fig. 6 is a perspective view of the first rotating assembly 22, fig. 7 is a perspective view of the second rotating assembly 24, fig. 8 is a partially exploded view of the first rotating assembly 22, and fig. 9 is a partially exploded view of the second rotating assembly 24. In this embodiment, the first rotating assembly 22 includes a first rotating rod 222 and a second rotating rod 224 that are rotatably connected to each other, specifically, the number of the first rotating rods 222 is two, two first rotating rods 222 are sleeved at two ends of the second rotating rod 224, and a central axis of the first rotating rod 222 coincides with a central axis of the second rotating rod 224, so that the first rotating rod 222 and the second rotating rod 224 can rotate relative to each other by taking the central axis as a rotating axis. The first rotating lever 222 is connected to the third hinge link 206 and the second rotating lever 224 is connected to the first hinge joint 202 so that the first hinge joint 202 is rotatably connected to the third hinge link 206.

First rotating rod 222 is movably coupled to linkage 400 such that first hinge knuckle 202 may be movably coupled to linkage 400. Further, first rotation rod 222 is slidably coupled to third hinge link 206 such that first hinge joint 202 is slidable relative to third hinge link 206.

In this embodiment, the second rotating assembly 24 includes the third rotating rod 242 and the fourth rotating rod 244 that are rotatably connected to each other, specifically, the number of the fourth rotating rod 244 is two, the two ends of the third rotating rod 242 are sleeved with the two fourth rotating rods 244, and the central axis of the third rotating rod 242 coincides with the central axis of the fourth rotating rod 244, so that the third rotating rod 242 and the fourth rotating rod 244 can rotate relatively with respect to each other as the rotating axis. The third rotating lever 242 is connected to the third hinge link 206 and the fourth rotating lever 244 is connected to the second hinge joint 204 such that the second hinge joint 204 is rotatably connected to the third hinge link 206.

The third rotating rod 242 is movably connected to the linkage 400, and the second hinge joint 204 is rotatably connected to the third rotating rod 242 via the fourth rotating rod 244, so that the second hinge joint 204 is rotatably connected to the third hinge joint 206. Further, the third rotating rod 242 is slidably connected to the third hinge link 206, and the second hinge joint 204 is rotatably connected to the third rotating rod 242 via the fourth rotating rod 244, so that the second hinge joint 204 is rotatably connected to the third hinge link 206 and can slide relative to the third hinge link 206.

In this embodiment, the first rotating rod 222 and the third rotating rod 242 are slidably connected to the third hinge link 206, and the first rotating rod 222 and the third rotating rod 242 are slidable in opposite directions on the third hinge link 206 via the linkage 400. Specifically, when the first hinge joint 202 moves in a direction close to the third hinge link 206, the first rotating rod 222 slides on the third hinge link 206 toward the third rotating rod 242, and under the action of the linkage mechanism 400, the third rotating rod 242 slides on the third hinge link 206 toward the first rotating rod 222, and further, the third rotating rod 242 indirectly drives the second hinge joint 204 to move in a direction close to the third hinge link 206. When the first hinge joint 202 moves away from the hinge joint, the first rotating rod 222 slides on the third hinge link 206 away from the third rotating rod 242, under the action of the linkage mechanism 400, the third rotating rod 242 slides on the third hinge link 206 away from the first rotating rod 222, and further, the third rotating rod 242 indirectly drives the second hinge joint 204 to move away from the third hinge link 206. In this embodiment, the linkage 400 can not only synchronously rotate the first hinge joint 202 and the second hinge joint 204 relative to the third hinge link 206, but also synchronously slide the first hinge joint 202 and the second hinge joint 204 relative to the third hinge link 206. In one embodiment, the sliding connection between the first rotating rod 222 and the third hinge link 206 and the sliding connection between the third rotating rod 242 and the third hinge link 206 are realized by a manner of matching a sliding block with a guide rail, when the guide rail is a linear guide rail, the sliding paths of the first rotating rod 222 and the third rotating rod 242 are linear, so it can be understood that the first hinge joint 202 can slide on the third hinge link 206, the second hinge joint 204 can slide on the third hinge link 206, and the first hinge joint 202 and the second hinge joint 204 can synchronously and reversely slide on the third hinge link 206.

Referring also to fig. 4-10, fig. 10 is a perspective view of the third hinge link 206. In this embodiment, first rotating assembly 22 and second rotating assembly 24 are also each engaged with third hinge link 206. Specifically, the second rotating rod 224 is provided with a first linking gear 502a, the third hinge link 206 is provided with a first linking rack 502b corresponding to the first linking gear 502a, and when the second rotating rod 224 rotates, the first linking gear 502a is engaged with the first linking rack 502b, so that the first rotating rod 222 slides on the third hinge link 206. The fourth rotating lever 244 is provided with a third coupling gear 506a, and the third hinge link 206 is provided with a third coupling rack 506b corresponding to the third coupling gear 506a, and when the fourth rotating lever 244 rotates, the third coupling gear 506a is engaged with the third coupling rack 506b, so that the third rotating lever 242 slides on the third hinge link 206. When the second rotating lever 224 rotates, the first linking gear 502a is engaged with the first linking rack 502b, the first rotating lever 222 and the third rotating lever 242 slide reversely on the third hinge link 206, the third linking gear 506a is engaged with the third linking rack 506b, and the fourth rotating lever 244 rotates.

Specifically, the first linking gear 502a is a gear having the rotating shaft of the second rotating rod 224 as a central axis, that is, the rotating shaft of the first linking gear 502a coincides with the rotating shaft of the second rotating rod 224, and the first linking rack 502b is a linear rack; the third coupling gear 506a is a gear having the rotation axis of the fourth rotation lever 244 as a central axis, that is, the rotation axis of the third coupling gear 506a coincides with the rotation axis of the fourth rotation lever 244, and the third coupling rack 506b is a linear rack.

The process of the hinge device 200 from the unfolded state to the folded state is as follows:

when an external force for rotating the first hinge joint 202 relative to the third hinge link 206 is applied to the first hinge joint 202, the second rotating rod 224 rotates, the first linking gear 502a is engaged with the first linking rack 502b, and due to the sliding connection relationship between the first rotating rod 222 and the third hinge link 206, while the first linking gear 502a rolls on the first linking rack 502b, the second rotating rod 224 drives the first rotating rod 222 to slide on the third hinge link 206 in a direction close to the third hinge link 206, further, the first rotating rod 222 and the third rotating rod 242 are movably connected through the linking mechanism 400, the linking mechanism 400 makes the movement direction of the third rotating rod 242 opposite to and synchronous with the movement direction of the first rotating rod 222, specifically, in combination with the sliding connection relationship between the third rotating rod 242 and the third hinge link 206, the first rotating rod 222 slides on the third hinge link 206 in a direction close to the third hinge link 206, through the action of the linkage mechanism 400, the third rotating rod 242 slides on the third hinge link 206 in the direction close to the third hinge link 206, and further, the third rotating rod 242 drives the fourth rotating rod 244 to slide on the third hinge link 206 in the direction close to the third hinge link 206, at this time, the third gear 506a is meshed with the third driving rack 506b, the third gear 506a rolls on the third driving rack 506b, so that the fourth rotating rod 244 rotates, and the second hinge joint 204 rotates along with the fourth rotating rod 244 relative to the third hinge link 206. The process of the hinge device 200 from the folded state to the unfolded state is reverse to the above process.

In this embodiment, the engagement of first linked gear 502a with first linked rack 502b translates the rotational portion of first link 202 relative to third link 206 into sliding movement of first link 202 on third link 206, and the engagement of third linked rack 506b with third linked gear 506a translates the sliding portion of second link 204 relative to third link 206 into rotating movement of second link 204 on third link 206. Further, the first hinge knuckle 202 and the second hinge knuckle 204 can slide and rotate synchronously and reversely by the action of the linkage mechanism 400.

In one embodiment, the first linking gear 502a is a quarter-circle gear and correspondingly the first linking rack 502b is a quarter-circle rack, so that the first hinge knuckle 202 can rotate within 90 degrees without using too much space for the first linking gear 502a and the first linking rack 502 b. Similarly, the third gear 506a is a quarter-circle gear, and correspondingly, the third gear rack 506b is a quarter-circle rack, so that the second hinge joint 204 can rotate within a range of 90 degrees, and the third gear 506a and the third gear rack 506b do not occupy too much space.

Referring to fig. 4, fig. 6 and fig. 11 together, fig. 11 is a perspective view of the first hinge knuckle 202. In this embodiment, the second rotating lever 224 is slidably connected to the first hinge joint 202. Specifically, the second rotating lever 224 is provided with a protruding portion 2240, one side of the protruding portion is provided with a sliding block 2242, correspondingly, the first hinge joint 202 is provided with a sliding guide groove 2246, and the sliding block 2242 slides on the sliding guide groove 2246, so that the second rotating lever 224 is slidably connected with the first hinge joint 202. Further, since the slide guide groove 2246 is a guide groove extending along a straight line and the slide locus of the protruding portion 2240 and the slide block 2242 is a straight line, it can be understood that the second rotating lever 224 can slide on the first hinge joint 202.

Referring to fig. 2, in one embodiment, the first hinge section 202 is covered with a fixing plate 702, the fixing plate 702 is fixed to the first hinge section 202 by a fastening member such as a screw, and the fixing plate 702 covers the slide guide groove 2246, and the protruding portion 2240 is accommodated in an accommodating space formed by the slide guide groove 2246 and the fixing plate 702, so that the protruding portion 2240 has only a degree of freedom to slide along the slide guide groove 2246.

In this embodiment, the first rotating rod 222 is provided with a second linkage gear 504a, and the first hinge joint 202 is provided with a second linkage rack 504b corresponding to the second linkage gear 504 a. Specifically, the second linkage gear 504a is a gear having the rotation axis of the first rotation lever 222 as the central axis, that is, the rotation axis of the second linkage gear 504a is overlapped with the rotation axis of the first rotation lever 222, and the second linkage rack 504b is a linear rack.

On the one hand, when the second rotating lever 224 slides on the first hinge link 202, the second coupling gear 504a engages with the second coupling rack 504b, and the first hinge link 202 rotates with respect to the first rotating lever 222. Specifically, when the external force pushes the first hinge joint 202 to approach the third hinge joint 206, the second linkage gear 504a is engaged with the second linkage rack 504b, the second linkage gear 504a rolls on the second linkage rack 504b, and the sliding motion portion of the first hinge joint 202 is converted into the rotation of the first hinge joint 202, so that the rotation of the first hinge joint 202 relative to the third hinge joint 206 is realized.

On the other hand, when the first hinge joint 202 rotates relative to the first rotation lever 222, the second coupling gear 504a engages with the second coupling rack 504b, and the second rotation lever 224 slides on the first hinge joint 202. Specifically, when the external force pushes the first hinge joint 202 to rotate relative to the third hinge joint 206, the second linkage gear 504a is engaged with the second linkage rack 504b, the second linkage gear 504a rolls on the second linkage rack 504b, and the rotating motion part of the first hinge joint 202 is converted into the sliding motion of the first hinge joint 202, so that the sliding motion of the first hinge joint 202 relative to the third hinge joint 206 is realized.

Referring to fig. 4, fig. 6 and fig. 12 together, fig. 12 is a perspective view of the second hinge knuckle 204. In this embodiment, the fourth rotating rod 244 is slidably connected to the second hinge joint 204. Specifically, the fourth rotating lever 244 is provided with a protruding portion 2440, one side of the protruding portion is provided with a sliding block 2442, and correspondingly, the second hinge joint 204 is provided with a sliding guide groove 2446, and the sliding block 2442 slides on the sliding guide groove 2446, so that the fourth rotating lever 244 is slidably connected with the second hinge joint 204. Further, since the sliding guide groove 2446 is a guide groove extending along a straight line and the sliding tracks of the protruding portion 2440 and the sliding block 2442 are straight lines, it can be understood that the fourth rotating lever 244 can slide on the first hinge knuckle 202.

Referring to fig. 2, in one embodiment, the second hinge joint 204 is covered with a fixing plate 704, the fixing plate 704 is fixed to the second hinge joint 204 by a fastener such as a screw, and the fixing plate 704 covers the sliding guide groove 2446, and the protruding portion 2440 is received in a receiving space formed by the sliding guide groove 2446 and the fixing plate 702, so that the protruding portion 2440 has only a degree of freedom to slide along the sliding guide groove 2446.

In this embodiment, the third rotating rod 242 is provided with a fourth linkage gear 508a, and the second hinge joint 204 is provided with a fourth linkage rack 508b corresponding to the fourth linkage gear 508 a. The fourth linkage gear 508a is a gear having the rotation axis of the third rotation lever 242 as a central axis, that is, the rotation axis of the fourth linkage gear 508a coincides with the rotation axis of the third rotation lever 242, and the fourth linkage rack 508b is a linear rack.

On the one hand, when the third rotating lever 242 slides on the second hinge link 204, the fourth linkage gear 508a engages with the fourth linkage rack 508b, and the second hinge link 204 rotates relative to the third rotating lever 242. Specifically, when the external force pushes the second hinge joint 204 to approach the third hinge joint 206, the fourth linkage gear 508a is engaged with the fourth linkage rack 508b, the fourth linkage gear 508a rolls on the fourth linkage rack 508b, and the sliding motion portion of the second hinge joint 204 is converted into the rotation of the second hinge joint 204, so that the second hinge joint 204 rotates relative to the third hinge joint 206.

On the other hand, when the second hinge joint 204 rotates relative to the third rotating lever 242, the fourth linkage gear 508a engages with the fourth linkage rack 508b, and the fourth rotating lever 244 slides on the second hinge joint 204. Specifically, when the external force pushes the second hinge joint 204 to rotate relative to the third hinge joint 206, the fourth linkage gear 508a is engaged with the fourth linkage rack 508b, the fourth linkage gear 508a rolls on the fourth linkage rack 508b, and the rotating motion part of the second hinge joint 204 is converted into the sliding motion of the second hinge joint 204, so that the sliding motion of the second hinge joint 204 relative to the third hinge joint 206 is realized.

when an external force for rotating the first hinge joint 202 with respect to the third hinge link 206 is applied to the first hinge joint 202, the first hinge joint 202 and the second rotating rod 224 slide with respect to each other, and at the same time, the third coupling gear 506a is engaged with the third coupling rack 506b, and the third coupling gear 506a rolls on the third coupling rack 506b, thereby rotating the first hinge joint 202 and the second rotating rod 224 with respect to the first rotating rod 222; the second rotating rod 224 rotates, the first linking gear 502a is engaged with the first linking rack 502b, due to the sliding connection relationship between the first rotating rod 222 and the third hinge link 206, while the first linking gear 502a rolls on the first linking rack 502b, the second rotating rod 224 drives the first rotating rod 222 to slide on the third hinge link 206 in a direction close to the third hinge link 206, further, the first rotating rod 222 and the third rotating rod 242 are movably connected by the linking mechanism 400, the linking mechanism 400 makes the movement direction of the third rotating rod 242 opposite to and synchronous with the movement direction of the first rotating rod 222, specifically, in combination with the sliding connection relationship between the third rotating rod 242 and the third hinge link 206, the first rotating rod 222 slides on the third hinge link 206 in a direction close to the third hinge link 206, and the third rotating rod 242 slides on the third hinge link 206 in a direction close to the third hinge link 206 by the action of the linking mechanism 400, further, the third rotating rod 242 drives the fourth rotating rod 244 to slide on the third hinge link 206 in a direction close to the third hinge link 206, at this time, the third driving gear 506a is engaged with the third driving rack 506b, and the third driving gear 506a rolls on the third driving rack 506b, so that the fourth rotating rod 244 rotates; while the fourth rotating rod 244 rotates, the fourth rotating rod 244 slides relative to the second hinge link 204, and simultaneously, the fourth linkage gear 508a is engaged with the fourth linkage rack 508b, and the fourth linkage gear 508a rolls on the fourth linkage rack 508b, so that the second hinge link 204 rotates along with the fourth rotating rod 244 relative to the third hinge link 206. The process of the hinge device 200 from the folded state to the unfolded state is reverse to the above process.

In this embodiment, the engagement of the second linkage gear 504a with the second linkage rack 504b interconverts the rotation and sliding of the first hinge joint 202 with respect to the third hinge link 206, and the engagement of the fourth linkage gear 508a with the fourth linkage rack 508b interconverts the rotation and sliding of the second hinge joint 204 with respect to the third hinge link 206, so that the rotation and sliding movements of the first hinge joint 202 and the second hinge joint 204 are combined and occur simultaneously. Further, the first hinge knuckle 202 and the second hinge knuckle 204 can slide and rotate synchronously and reversely by the action of the linkage mechanism 400.

In one embodiment, the second linkage gear 504a is a quarter-circle gear and correspondingly the second linkage rack 504b is a quarter-circle rack, such that the first hinge knuckle 202 can rotate within a 90 degree range without the second linkage gear 504a and the second linkage rack 504b taking up too much space. Similarly, the fourth linkage gear 508a is a quarter-circle gear, and correspondingly, the fourth linkage rack 508b is a quarter-circle rack, so that the second hinge joint 204 can rotate within a range of 90 degrees, and the fourth linkage gear 508a and the fourth linkage rack 508b do not occupy too much space.

In the present embodiment, linkage 400 is used to synchronize and reverse the movement of first knuckle 202 and second knuckle 204 relative to third knuckle 206. Linkage 400 includes, but is not limited to, the following embodiments:

implementation mode one

Referring to fig. 13 to 16, fig. 13 is a top view of the hinge device 200, fig. 14 is an enlarged view of a position a of fig. 13, fig. 15 is a perspective view of the hinge device 200 when unfolded, and fig. 16 is a perspective view of the hinge device 200 when folded. The linkage mechanism 400 comprises a linkage rod 600, the linkage rod 600 comprises a first end portion 62 and a second end portion 64 which are oppositely arranged, and a connecting portion 66 which is positioned between the first end portion 62 and the second end portion 64, the connecting portion 66 is rotatably connected with the third hinge link 206, the first end portion 62 is movably connected to the first rotating rod 222, and the second end portion 64 is movably connected to the third rotating rod 242. When the first rotating rod 222 slides to a direction close to the third hinge link 206, the first rotating rod 222 pushes the first end portion 62 to rotate the linkage rod 600 around the connecting portion 66 in a clockwise direction as shown in the figure, so that the third rotating rod 242 slides to a direction close to the third hinge link 206 along with the second end portion 64, the sliding motion of the first hinge joint 202 relative to the third hinge link 206 is the same as that of the first rotating rod 222, and the sliding motion of the second hinge joint 204 relative to the third hinge link 206 is the same as that of the third rotating rod 242, thereby realizing the synchronous and reverse sliding of the first hinge joint 202 and the second hinge joint 204. Further, by the action of the first rotating assembly 22 and the second rotating assembly 24, the synchronous and reverse rotation of the first hinge joint 202 and the second hinge joint 204 is realized.

In this embodiment, the first rotating rod 222 is provided with a first guide block 2220, the third rotating rod 242 is provided with a second guide block 2420, the first guide block 2220 is movably connected to the first end portion 62, the second guide block 2420 is movably connected to the second end portion 64, the third hinge link 206 is provided with a slide rail 2060, and the first guide block 2220 and the second guide block 2420 are slidably connected to the third hinge link 206 via the slide rail 2060. Further, the slide rail 2060 is a slide rail 2060 extending along a straight line, and the sliding tracks of the first guide block 2220 and the second guide block 2420 are straight lines, so it can be understood that the first rotating lever 222 and the third rotating lever 242 can slide on the first hinge joint 202.

In this embodiment, the first end portion 62 is provided with a first sliding slot 62a, the second end portion 64 is provided with a second sliding slot 64a, the first guide block 2220 is provided with a first protrusion 62b, the second guide block 2420 is provided with a second protrusion 64b, the first protrusion 62b is movably connected with the first end portion 62 in the first sliding slot 62a, and the second protrusion 64b is movably connected with the second end portion 64 in the second sliding slot 64 a. Specifically, the first sliding groove 62a and the second sliding groove 64a are elongated sliding grooves, and the first protrusion 62b and the second protrusion 64b are cylindrical. The first protrusion 62b can slide in the first sliding groove 62a along the length direction of the first sliding groove 62a, and can also rotate relative to the first end 62; the second protrusion 64b can slide in the second sliding groove 64a along the length direction of the second sliding groove 64a, and can also rotate relative to the second end 64. Accordingly, the sliding of the first and second guide blocks 2220 and 2420 on the third hinge link 206 may be interconverted with the rotation of the linkage bar 600.

With particular reference to fig. 15 and 16, the process of the hinge assembly 200 from the unfolded state to the folded state is as follows:

when the first hinge joint 202 rotates relative to the third hinge link 206, the first rotating rod 222 slides in a direction approaching the third hinge link 206, the first rotating rod 222 pushes the first end portion 62 to rotate the linkage rod 600 around the connecting portion 66 in a clockwise direction as shown, so that the third rotating rod 242 also slides in a direction approaching the third hinge link 206 along with the second end portion 64, and the second hinge joint 204 rotates relative to the third hinge link 206. The process of the hinge assembly 200 from the folded state to the unfolded state is reversed, thereby achieving the synchronous and reverse sliding of the first knuckle 202 and the second knuckle 204.

In this embodiment, the first end portion 62 and the second end portion 64 are symmetrically disposed, the rotation axis of the linkage rod 600 is located on the connecting portion 66, and the rotation axis is located at the geometric center of the linkage rod 600, when the linkage rod 600 rotates around the rotation axis, the movement processes and the movement tracks of the first guide block 2220 movably connected to the first end portion 62 and the second guide block 2420 movably connected to the second end portion 64 are symmetrical around the rotation axis, so that the sliding distances of the first hinge joint 202 and the second hinge joint 204 are always the same, the sliding directions are always opposite, and further, the movement processes of the first hinge joint 202 and the second hinge joint 204 are always symmetrical and synchronous.

In this embodiment, when the hinge device 200 is in the unfolded state, the first protrusion 62b abuts against a sidewall of the first sliding groove 62a at the end away from the connecting portion 66, the second protrusion 64b abuts against a sidewall of the second sliding groove 64a at the end away from the connecting portion 66, so as to limit the moving stroke of the first protrusion 62b and the second protrusion 64b, further, when the first protrusion 62b abuts against a sidewall of the first sliding groove 62a at the end away from the connecting portion 66, and the second protrusion 64b abuts against a sidewall of the second sliding groove 64a at the end away from the connecting portion 66, the first protrusion 62b and the second protrusion 64b cannot continue to slide, and correspondingly, the first rotating component 22 and the second rotating component 24 cannot continue to rotate, and the first hinge joint 202 and the second hinge joint 204 cannot continue to rotate relative to the third hinge link 206, so as to prevent the first hinge joint 202 and the second hinge joint 204 from excessively rotating and turning over outwards, protecting the hinge device 200 and the flexible display screen 300. Further, the length of the first and second sliding

grooves

62a and 64a is sized such that when the hinge device 200 is in the unfolded state, the sliding stroke of the first and

second protrusions

62b and 64b is just as good as when the first and second hinge joints 202 and 204 are completely unfolded and do not turn out.

In one embodiment, the linkage rod 600 movably connects one first guide block 2220 and one second guide block 2420 to form a linkage assembly, and the number of the linkage assemblies is multiple. Specifically, the number of the linkage assemblies may be even, and the plurality of linkage assemblies are symmetrically disposed at two ends of the third hinge link 206 in the length direction, and the linkage assemblies are uniformly distributed, so that the linkage effect of the first hinge link 202 and the second hinge link 204 is improved. Further, the larger the number of linkage components, the better the linkage effect of the first knuckle 202 and the second knuckle 204.

The mode that two ends of the linkage rod 600 are movably connected to the first hinge joint 202 and the second hinge joint 204 is simple and easy to realize, the number of structural parts is small, the realization effect is good, and the installation, the disassembly and the maintenance are convenient.

Referring to fig. 2, in one embodiment, a cover plate 706 covers the third hinge link 206, the cover plate 706 covers the linkage 400, and the cover plate 706 is fixed to the first hinge joint 202 by a fastener such as a screw. On one hand, the cover plate 706 is used for shielding the linkage mechanism 400 and preventing the linkage mechanism 400 from being exposed to interfere with other structures, and on the other hand, the cover plate 706 rotates the connecting part 66 connected with the linkage rod 600, so that the linkage rod 600 is installed between the cover plate 706 and the third hinge link 206 and the rotating shaft of the linkage rod 600 is fixed. In fact, the cover 706 can also cover the first guide block 2220 and the second guide block 2420, so that the first guide block 2220 and the second guide block 2420 can only slide along the slide rail 2060.

Second embodiment

Referring to fig. 17, fig. 17 is a top view of the hinge device 200. The linkage mechanism 400 includes a linkage rod 600 and a transition rod 602, both ends of the transition rod 602 are respectively hinged to the first end portion 62 of the linkage rod 600 and the first guide block 2220 of the first rotating assembly 22, and the second end portion 64 of the linkage rod 600 and the second guide block 2420 of the second rotating assembly 24. The first guide block 2220, the transition rod 602, the linkage rod 600, the transition rod 602 and the second guide block 2420 are sequentially hinged to form a hinge group, and the first guide block 2220 and the second guide block 2420 slide on the third hinge link 206 and are mutually converted from the rotation of the linkage rod 600.

Third embodiment

Referring to fig. 18, fig. 18 is a top view of the hinge device 200. The linkage mechanism 400 further includes a transition rod 602, and the two ends of the transition rod 602 are respectively hinged to the first end portion 62 and the first rotating rod 222, and the second end portion 64 and the third rotating rod 242. The first rotating rod 222, the transition rod 602, the linkage rod 600, the transition rod 602 and the third rotating rod 242 are sequentially hinged to form a hinge group, and the sliding of the first rotating rod 222 and the third rotating rod 242 on the third hinge link 206 and the rotation of the linkage rod 600 are mutually converted.

In one embodiment, the number of linkage rods 600 may be two, and two linkage rods 600 are hinged to each other at the connection portion 66, so that both linkage rods 600 can rotatably connect the third hinge link 206. Further, the two linkage rods 600 are symmetrically arranged, and the motion modes of the two linkage rods 600 are synchronous and opposite.

Embodiment IV

Referring to fig. 19, fig. 19 is a perspective view of the hinge device 200. The linkage mechanism 400 includes a gear 800, the gear 800 is rotatably connected to the third hinge link 206, the first rotating rod 222 is provided with a first rack 802, the third rotating rod 242 is provided with a second rack 804, and the first rack 802 and the second rack 804 are respectively located at two opposite sides of the gear 800 and are both engaged with the gear 800. Specifically, the rotation axis of the gear 800 is perpendicular to the third hinge link 206, the sliding directions of the first rack 802 and the second rack 804 are opposite, for example, when the gear 800 rotates clockwise, the first rack 802 and the second rack 804 move towards each other, and when the gear 800 rotates counterclockwise, the first rack 802 and the second rack 804 move away from each other.

In this embodiment, the third hinge link 206 is provided with a slide rail 2060, and the first and

second racks

802 and 804 are slidably connected to the third hinge link 206 via the slide rail 2060. Further, the slide rail 2060 is a slide rail 2060 extending along a straight line, and the sliding tracks of the first guide block 2220 and the second guide block 2420 are straight lines, so it can be understood that the first rotating lever 222 and the third rotating lever 242 can slide on the first hinge joint 202.

In the process of the hinge device 200 from the unfolded state to the folded state, the first rack 802 slides in a direction approaching the third hinge link 206, and due to the meshing of the first rack 802 and the gear 800, the gear 800 and the second rack 804 are meshed, and the second rack 804 also synchronously slides in a direction approaching the third hinge link 206.

Referring to fig. 6 and 7, the hinge device 200 according to the embodiment of the present disclosure further includes a damping component disposed on the first rotating component 22 and the second rotating component 24 to provide a damping torque. Specifically, the damping assembly comprises a friction plate, an elastic ring and a bolt which are sequentially sleeved at two ends of the first rotating rod 222 or the fourth rotating rod 244, and the friction force between the elastic ring, the friction plate and the first rotating rod 222 or the fourth rotating rod 244 is changed by adjusting the locking degree of the bolt, so that the damping torque is changed, and the rotating hand feeling of the first rotating assembly 22 and the second rotating assembly 24 is better.

Referring to fig. 1, an electronic device 100 according to an embodiment of the present disclosure further includes a flexible display screen 300 and a hinge device 200, where two non-bending regions 300b of the flexible display screen 300 are respectively mounted on the first hinge joint 202 and the second hinge joint 204, and a bending region 300a is located on the third hinge joint 206, so that the flexible display screen 300 can be bent or unfolded by bending or unfolding the first hinge joint 202 and the second hinge joint 204 relative to the third hinge joint 206.

It is to be understood that in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the description of the present specification, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

The hinge device is characterized by comprising a first hinge joint, a second hinge joint, a third hinge joint and a linkage mechanism, wherein the first hinge joint and the second hinge joint are hinged on two opposite sides of the third hinge joint, the linkage mechanism is positioned on the third hinge joint, and the first hinge joint is movably connected with the second hinge joint through the linkage mechanism so that the first hinge joint can drive the second hinge joint to synchronously rotate relative to the third hinge joint.
The hinge assembly of claim 1, wherein the linkage is a symmetrical opposing linkage; the first force applied by or to the first hinge joint by the linkage mechanism is the same magnitude and opposite direction as the second force applied by or to the second hinge joint.
The hinge assembly of claim 2, wherein the first and second knuckles rotate relative to the third knuckle at the same speed and in opposite directions.
The hinge assembly of claim 3, further comprising a first rotating assembly movably coupled between the first knuckle and the linkage mechanism and a second rotating assembly movably coupled between the second knuckle and the linkage mechanism, wherein when the first knuckle rotates relative to the third knuckle via the first rotating assembly, the linkage mechanism drives the second knuckle to rotate relative to the third knuckle via the second rotating assembly.
The hinge device as claimed in claim 4, wherein the first rotating assembly comprises a first rotating rod and a second rotating rod which are rotatably connected with each other, the first rotating rod is movably connected with the linkage mechanism, and the first hinge joint is rotatably connected with the linkage mechanism through the first rotating rod, so that the first hinge joint is rotatably connected with the third hinge joint.
The hinge assembly of claim 5, wherein the second rotating assembly comprises a third rotating rod and a fourth rotating rod that are rotatably connected to each other, the third rotating rod is movably connected to the linkage mechanism, and the second hinge joint is rotatably connected to the linkage mechanism via the third rotating rod, so that the second hinge joint is rotatably connected to the third hinge joint.
The hinge assembly of claim 6, wherein the first and third rotation levers slidably couple the third hinge link, the first rotation lever being slidable in a direction opposite to that of the third rotation lever via the linkage mechanism.
The hinge assembly of claim 7, wherein the linkage mechanism includes a linkage rod including first and second oppositely disposed ends and a connecting portion between the first and second ends, the connecting portion rotatably connecting the third hinge link, the first end being movably connected to the first rotating rod and the second end being movably connected to the third rotating rod.
The hinge device according to claim 8, wherein a first guide block is disposed on the first rotating rod, a second guide block is disposed on the third rotating rod, the first guide block is movably connected to the first end portion, the second guide block is movably connected to the second end portion, the third hinge link is provided with a sliding rail, and the first guide block and the second guide block are slidably connected to the third hinge link through the sliding rail.
The hinge assembly of claim 9, wherein the first end portion defines a first slot, the second end portion defines a second slot, the first guide block defines a first protrusion, the second guide block defines a second protrusion, the first protrusion is movably coupled to the first end portion within the first slot, and the second protrusion is movably coupled to the second end portion within the second slot.
The hinge assembly of claim 10, wherein the linkage bar movably connects one of the first guide blocks to one of the second guide blocks to form a plurality of linkage assemblies.
The hinge assembly of claim 9, wherein the linkage mechanism further comprises a transition rod, wherein two ends of the transition rod are respectively hinged to the first end portion and the first guide block, and the second end portion and the second guide slider.
The hinge device according to claim 8, wherein the linkage mechanism further comprises a transition rod, and both ends of the transition rod are respectively hinged to the first end portion and the first rotating rod, and the second end portion and the third rotating rod.
The hinge device according to claim 7, wherein the linkage mechanism comprises a gear, the gear is rotatably connected to the third hinge link, the first rotating rod is provided with a first rack, the third rotating rod is provided with a second rack, and the first rack and the second rack are respectively located at two opposite sides of the gear and are both engaged with the gear.
The hinge device according to claim 7, wherein the second rotating lever is provided with a first link gear, the third hinge unit is provided with a first link rack corresponding to the first link gear, the fourth rotating lever is provided with a third link gear, the third hinge unit is provided with a third link rack corresponding to the third link gear, when the second rotating lever rotates, the first link gear is engaged with the first link rack, the first rotating lever and the third rotating lever reversely slide on the third hinge unit, the third link gear is engaged with the third link rack, and the fourth rotating lever rotates.
The hinge device according to any one of claims 6 to 15, wherein the second rotating rod is slidably connected to the first hinge joint, the first rotating rod is provided with a second coupling gear, the first hinge joint is provided with a second coupling rack corresponding to the second coupling gear, and when the second rotating rod slides on the first hinge joint, the second coupling gear is engaged with the second coupling rack, so that the first hinge joint rotates relative to the first rotating rod.
The hinge assembly as claimed in claim 16, wherein the fourth rotating rod is slidably connected to the second hinge joint, the third rotating rod is provided with a fourth linking gear, the second hinge joint is provided with a fourth linking rack corresponding to the fourth linking gear, and when the fourth rotating rod slides on the second hinge joint, the fourth linking gear is engaged with the fourth linking rack, so that the second hinge joint rotates relative to the third rotating rod.
The hinge assembly of any one of claims 1 to 17, further comprising a cover plate disposed over the linkage mechanism.
The hinge assembly of any one of claims 4 to 18, further comprising a damping assembly disposed on the first and second rotating assemblies to provide a damping torque.
An electronic device comprising a flexible display and the hinge device of any one of claims 1 to 19, wherein the flexible display is disposed on the hinge device.