CN112392850A

CN112392850A - Support hinge device, folding device for flexible screen and mobile terminal

Info

Publication number: CN112392850A
Application number: CN201910760061.0A
Authority: CN
Inventors: 敬华伟; 汤海舰
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2021-02-23
Anticipated expiration: 2039-08-16
Also published as: CN112392850B

Abstract

The present disclosure relates to a support hinge device, a folding device for a flexible screen, and a mobile terminal. The supporting hinge device comprises a connecting mechanism and a rotating shaft assembly, wherein the connecting mechanism comprises a first connecting plate and a second connecting plate which are hinged to each other, the rotating shaft assembly is connected between the first connecting plate and the second connecting plate and extends along the length direction of the connecting plates, the first connecting plate and the second connecting plate rotate relative to the rotating shaft assembly respectively, the rotating shaft assembly is provided with a wire passing channel, and the wire passing channel penetrates through the supporting hinge device along the width direction of the connecting plates. Through set up the pivot between first connecting plate and second connecting plate, can cover certain clearance, ensured the effective support to flexible screen deformation zone. Meanwhile, through the arrangement of the wire passing channel penetrating along the width direction of the connecting plate, the shells on two sides of the mobile terminal are convenient to communicate, a wire or a flexible circuit board and the like can conveniently pass through, and the shells on two sides are electrically connected.

Description

Support hinge device, folding device for flexible screen and mobile terminal

Technical Field

The present disclosure relates to the field of electronic devices, and in particular, to a support hinge device, a folding device for a flexible screen, and a mobile terminal.

Background

With the increasing development of electronic device technology, users have increasingly high demands for electronic devices having large sizes and being easy to carry, and therefore, electronic devices having foldable flexible screens are receiving wide attention. In order to fold and unfold the two housings, a housing of the folding screen mobile terminal is generally provided as two separate housings, and both sides of the flexible screen are fixed to the housings on both sides, respectively. To ensure that the switching between the folded and unfolded state is possible, the folding deformation zone of the flexible screen is usually not fixedly connected to the housing. When the folding flexible screen is folded, two possible motion states of outward convex folding and inward concave folding can occur in the folding deformation area. In the prior art, a complicated hinge structure is usually designed to accommodate the folding deformation area of the flexible screen, but how to realize the circuit connection between the two shells is often ignored.

Disclosure of Invention

An object of the present disclosure is to provide a support hinge device for facilitating circuit connection between two housings of a mobile terminal.

In order to achieve the above object, the present disclosure provides a support hinge device for a folding device for a flexible screen, including a connecting mechanism and a rotation shaft assembly, the connecting mechanism includes a first connecting plate and a second connecting plate hinged to each other, the rotation shaft assembly is connected between the first connecting plate and the second connecting plate and extends along a length direction of the connecting plates, the first connecting plate and the second connecting plate respectively rotate relative to the rotation shaft assembly, the rotation shaft assembly is provided with a wire passing channel, and the wire passing channel penetrates through the support hinge device along a width direction of the connecting plates.

Optionally, the first connecting plate and the second connecting plate rotate respectively relative to two center pins, the pivot subassembly includes pivot spare, the pivot spare is including connecting lid and two pivot portions, two pivot portion intervals set up in the below of connecting the lid, pivot portion with center pin one-to-one and coaxial setting, the pivot spare passes through two pivot portions respectively with first connecting plate with the second connecting plate rotates and is connected, the connecting lid is provided with the line hole of crossing that runs through.

Optionally, the rotating shaft assembly further comprises two supporting pressing covers, the rotating shaft piece is arranged between the two supporting pressing covers, the two supporting pressing covers are respectively connected with the first connecting plate and the second connecting plate, a rotating shaft groove is formed between each supporting pressing cover and the corresponding connecting plate, and the rotating shaft portion is arranged in the corresponding rotating shaft groove.

Optionally, the supporting gland is provided with a wire passing groove, the wire passing groove extends along the width direction of the connecting plate, and the wire passing hole communicates the two wire passing grooves on the supporting gland to form the wire passing channel.

Optionally, the connecting cover is provided with a first supporting plane, one side of the supporting gland, which faces away from the rotating shaft groove, is provided with a supporting part, the supporting part is provided with a second supporting plane, and when the first connecting plate and the second connecting plate are unfolded, the first supporting plane and the second supporting plane are on the same plane.

Optionally, the two sides of the first supporting plane are connected with first supporting arc surfaces, the supporting part is close to one side of the rotating shaft part and is provided with a second supporting arc surface, the first supporting arc surface and the second supporting arc surface are coaxially arranged, and when the first connecting plate and the second connecting plate are folded, the first supporting arc surface and the second supporting arc surface are located on the same arc surface.

Optionally, the first connecting plate and the second connecting plate are both provided with a lower rotating shaft groove, the bottom of each support gland is provided with an upper rotating shaft groove, and the lower rotating shaft groove and the corresponding upper rotating shaft groove form the rotating shaft groove.

Optionally, the pivot subassembly includes a plurality of pivot spares, a plurality of pivot spares are followed the length direction of connecting plate sets up, every the pivot spare is including connecting lid and two pivot portions, two pivot portion intervals set up in the below of connecting the lid, every the pivot spare passes through two pivot portions respectively with first connecting plate with the second connecting plate rotates to be connected, at least one on the pivot spare the connecting lid is provided with the line hole of crossing that runs through.

Through above-mentioned technical scheme, first connecting plate and second connecting plate can appear the clearance when folding between the two, through set up the pivot between first connecting plate and second connecting plate, can cover certain clearance, has ensured the effective support to flexible screen deformation zone. Meanwhile, through the arrangement of the wire passing channel penetrating along the width direction of the connecting plate, the shells on two sides of the mobile terminal are convenient to communicate, a wire or a flexible circuit board and the like can conveniently pass through, and the shells on two sides are electrically connected.

According to another aspect of the present disclosure, there is also provided a folding device for a flexible screen, including the above-mentioned support hinge device.

Optionally, the folding device for the flexible screen further comprises a first bearing piece, a second bearing piece and a rotating connecting mechanism, the first bearing part and the second bearing part are used for bearing the flexible screen together, the first bearing part is provided with a first accommodating cavity, the second bearing piece is provided with a second containing cavity, the wire passing channel is used for communicating the first containing cavity with the second containing cavity, the connecting mechanism is arranged between the first bearing piece and the second bearing piece, the first connecting plate is connected with the first bearing piece in a sliding way, the second connecting plate is connected with the second bearing piece in a sliding way, the rotating connecting mechanism is connected between the first connecting plate and the second connecting plate, so that the first bearing piece and the second bearing piece can synchronously slide relative to the corresponding connecting plate when rotating in the process of unfolding and folding the flexible screen folding device.

Optionally, the first bearing part is provided with a plurality of first gear shaping teeth at intervals on one side close to the connecting mechanism, the second bearing part is provided with a plurality of second gear shaping teeth at intervals on one side close to the connecting mechanism, a plurality of first sliding grooves and a plurality of second sliding grooves are respectively provided at intervals on two sides of the rotating shaft assembly, the first gear shaping teeth are slidably arranged in the corresponding first sliding grooves, and the second gear shaping teeth are slidably arranged in the corresponding second sliding grooves.

Optionally, the rotation connecting mechanism is connected to the ends of the first connecting plate and the second connecting plate, the rotation shaft assembly further includes two supporting glands extending along the length direction of the connecting plate, the two supporting glands are respectively connected to the first connecting plate and the second connecting plate, the first sliding groove is disposed on the upper surface of one of the supporting glands, and the second sliding groove is disposed on the upper surface of the other of the supporting glands.

Optionally, first carrier includes first casing and the first flexible screen backup pad that each other approximately closes, first casing is provided with first chamber of holding, the second carrier includes second casing and the second flexible screen backup pad that each other approximately closes, the second casing is provided with the second holds the chamber, first gear shaping set up in first flexible screen backup pad, the second gear shaping set up in the second flexible screen backup pad, first connecting plate with first casing sliding connection, the second connecting plate with second casing sliding connection.

Optionally, the first flexible screen supporting plate comprises a first toothed portion and a first bearing portion for supporting a flexible screen, the first toothed portion is disposed on the first toothed portion, an upper surface of the first toothed portion is lower than an upper surface of the first bearing portion, the second flexible screen supporting plate comprises a second toothed portion and a second bearing portion for supporting a flexible screen, the second toothed portion is disposed on the second toothed portion, an upper surface of the second toothed portion is lower than an upper surface of the second bearing portion,

the folding device for the flexible screen further comprises a flexible supporting sheet extending along the length direction of the connecting plate, two sides of the flexible supporting sheet are respectively attached to the first tooth inserting portion and the second tooth inserting portion, and when the folding device for the flexible screen is unfolded, the upper surfaces of the flexible supporting sheet, the first bearing portion and the second bearing portion are located on the same plane.

According to another aspect of the present disclosure, there is also provided a mobile terminal including a flexible screen and the folding device for a flexible screen.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a perspective view of a support hinge assembly in an unfolded state illustrating a rotational connection at one end according to one embodiment of the present disclosure;

FIG. 2 is an exploded view of one embodiment of the rotary connection of the present disclosure;

FIG. 3 is a perspective view of a shaft member of a support hinge assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a perspective view illustrating a supporting cover of the supporting hinge device according to an embodiment of the present disclosure;

fig. 6 is a schematic perspective view of a folding device for a flexible screen in an unfolded state according to an embodiment of the present disclosure, in which a flexible screen support plate and a flexible support sheet are not shown;

fig. 7 is an exploded view of a folding device for a flexible screen in a folded state according to an embodiment of the present disclosure, in which a flexible support sheet is exploded;

fig. 8 is a perspective view illustrating a rotation shaft member of a support hinge device according to another embodiment of the present disclosure;

fig. 9 is a schematic perspective view of a folding device for a flexible screen according to another embodiment of the present disclosure in an unfolded state;

fig. 10 is a perspective view schematically illustrating a folding device for a flexible screen according to another embodiment of the present disclosure in a folded state;

fig. 11 is a schematic perspective view of a mobile terminal in an unfolded state according to an embodiment of the present disclosure;

FIG. 12 is a schematic cross-sectional view taken along line B-B of FIG. 11;

FIG. 13 is an enlarged partial schematic view at I of FIG. 12;

fig. 14 is a perspective view of a mobile terminal in a folded state according to an embodiment of the present disclosure;

FIG. 15 is a schematic cross-sectional view taken along line C-C of FIG. 14;

fig. 16 is an exploded view of a mobile terminal in an unfolded state according to an embodiment of the present disclosure;

fig. 17 is an exploded schematic view of a mobile terminal in an unfolded state according to an embodiment of the present disclosure, in which a flexible screen support plate, a flexible support sheet, and a flexible screen are exploded;

fig. 18 is an exploded view of the mobile terminal in an unfolded state according to an embodiment of the present disclosure, in which the flexible support sheet and the flexible screen are exploded;

fig. 19 is an exploded view of the mobile terminal in an unfolded state according to an embodiment of the present disclosure, in which a flexible screen is exploded;

FIG. 20 discloses an exploded view of the rotating link mechanism of the folding device for a flexible screen in an unfolded state according to one embodiment;

FIG. 21 is a schematic perspective view of a rotating link mechanism of a folding device for a flexible screen in an unfolded state according to an embodiment of the present disclosure;

fig. 22 is a perspective view illustrating a rotation connecting mechanism of the folding device for a flexible screen in a folded state according to an embodiment of the present disclosure;

FIG. 23 is a cross-sectional view taken along line D-D of FIG. 21;

fig. 24 is a schematic perspective view illustrating a first rotating member of a folding device for a flexible screen according to an embodiment of the present disclosure;

fig. 25 is a schematic perspective view and a side view of a first pin of a folding device for a flexible screen according to an embodiment of the present disclosure;

fig. 26 is an exploded view of a rotation coupling mechanism and a coupling mechanism of a folding device for a flexible screen according to an embodiment of the present disclosure.

Description of the reference numerals

300-support hinge means; 201-flexible screen; 80-a connection mechanism; 81-a first connection plate; 82-a second connecting plate; 83-lower groove of rotating shaft; 110-a wire-passing channel; 1-a rotating shaft member; 101-a connection cover; 1011-a first support plane; 1012-first support arc; 102-a spindle portion; 103-wire through hole; 2-supporting the gland; 201-a support; 2011-second support plane; 2012-second support arc; 202-a wire passing groove; 203-upper groove of rotating shaft; 204-a first runner; 205-a second runner; 10-a first carrier; 13-first gear shaping; 14-a first housing; 141-a first containing cavity; 15-a first flexible screen support plate; 151-first toothed segment; 152-a first carrier part; 20-a second carrier; 21-second gear shaping; 22-a second housing; 221-a second containing cavity; 23-a second flexible screen support plate; 231-second toothed segment; 232-a second carrier part; 90-a flexible support sheet; 100-folding device for flexible screen; 10-a first carrier; 11-front side; 12-back side; 20-a second carrier; 30-a rotating connection mechanism; 41-a first rotating member; 411-a first clamp arm; 412-a stop; 413-first tooth; 414-first limiting wall; 415-a circular hole; 42-a second rotating member; 421-second teeth; 422-a second stop wall; 423-second clip arm; 43-a first pin; 431-a first friction part; 432-pin shaft portion; 433-circular arc; 434-kidney-shaped hole; 44-a second pin; 441-a second friction portion; 45-hinge mount; 46-a first stop; 47-a second stop; 51-a first friction plate; 52-second friction plate; 53-a first elastic member; 54-a second resilient member; 60-a first transmission mechanism; 61-a rack; 62-gear set; 621-a first duplicate gear; 622 — second duplicate gear; 623-a transmission gear; 70-a second transmission mechanism; 80-a connection mechanism; 81-a first connection plate; 82-a second connecting plate; 200-a mobile terminal; 201-flexible screen; x-the direction of synchronous sliding.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, the use of the directional words such as "upper and lower" generally means that when the support hinge device 300 is applied to the folding device 100 for a flexible screen, when in the unfolded state, the side for mounting the flexible screen 201 is upper and the side away from the side for mounting the flexible screen 201 is lower, and specifically, referring to the drawing plane direction as shown in fig. 2, "inner and outer" means the inner and outer of the profile of the relevant component. The longitudinal direction of the connecting plate means the axial direction along the central axis, and the width direction of the connecting plate means the direction perpendicular to the central axis, and specifically, the direction of the drawing as shown in fig. 1 can be referred to. The thickness refers to a height dimension in a direction perpendicular to the flexible screen 201 when the flexible screen 201 is applied to the mobile terminal 200 in a folded state, and specifically, a height dimension in an up-down direction in a drawing plane as shown in fig. 2 may be referred to. The directions X of the synchronous sliding are all directions perpendicular to the axis of the rotating shaft when the flexible screen is folded by the folding device 100, and specifically, reference may be made to the drawing direction X as shown in fig. 8. The friction force includes a dynamic friction force generated between relatively moving members and a static friction force generated between members having a tendency to move relatively. In addition, the terms "first", "second", and the like used in the embodiments of the present disclosure are for distinguishing one element from another, and have no order or importance.

As shown in fig. 1-18, the present disclosure provides a support hinge device 300 for a folding device 100 for a flexible screen. The support hinge device 300 includes a connection mechanism 80 and a rotary shaft assembly. The connecting mechanism 80 includes a first connecting plate 81 and a second connecting plate 82 hinged to each other. The first connection plate 81 is for connection with one of the housings of the mobile terminal 200, and the second connection plate 82 is for connection with the other housing of the mobile terminal 200. The first connecting plate 81 and the second connecting plate 82 respectively rotate relative to the rotating shaft assembly, so that the two shells can be driven to fold and unfold. The rotating shaft assembly is connected between the first connecting plate 81 and the second connecting plate 82 and extends along the length direction of the connecting plates. The rotating shaft assembly is provided with a wire passage 110, and the wire passage 110 penetrates through the support hinge device 300 along the width direction of the connecting plate.

For convenience of description, the supporting hinge device 300 is applied to the mobile terminal 200, as shown in fig. 14, hereinafter in the present disclosure, the flexible screen 201 covers the outer surface of the housing when the mobile terminal 200 is in a folded state, that is, two display surfaces of the flexible screen 201 may be folded back to back, and the display surfaces are exposed to the housing when the mobile terminal is folded, and this is taken as an example for explanation. In the present disclosure, the flexible screen 201 includes two attachment regions and a deformation region connected between the attachment regions, and the two attachment regions are fixed to the two housings, respectively.

First connecting plate 81 and second connecting plate 82 can appear the clearance when folding between the two, through set up the pivot between first connecting plate 81 and second connecting plate 82, can cover certain clearance, has ensured the effective support to flexible screen 201 deformation zone. Meanwhile, the wire passing channel 110 penetrating along the width direction of the connecting plate is arranged, so that the shells on the two sides of the mobile terminal 200 can be conveniently communicated, a wire or a flexible circuit board can conveniently pass through the wire passing channel, and the shells on the two sides can be electrically connected. And because the pivot subassembly covers and limiting displacement to electric wire or flexible circuit board, electric wire or flexible circuit board etc. can not influence the support of pivot subassembly to flexible screen 201 deformation zone.

In one embodiment of the present disclosure, the spindle assembly includes a spindle member 1. The first connecting plate 81 and the second connecting plate 82 rotate with respect to two central axes, respectively. When the support hinge device 300 is applied to the mobile terminal 200, the two housings of the mobile terminal 200 are rotated about the two central axes, respectively, to be folded and unfolded. As shown in fig. 2 to 4 and 8, the rotating shaft member 1 includes a connecting cover 101 and two rotating shaft portions 102, the rotating shaft portions 102 are arranged coaxially and in one-to-one correspondence with the central axis, and the two rotating shaft portions 102 are arranged below the connecting cover 101 at intervals. The rotating shaft member 1 is rotatably connected to the first connecting plate 81 and the second connecting plate 82 through two rotating shaft portions 102, respectively. The connection cover 101 is provided with a through-hole 103.

The specific structure of the rotating member 1 is not limited in the present disclosure as long as it can be connected between the first connecting plate 81 and the second connecting plate 82 to cover the gap therebetween without affecting the rotation of the first connecting plate 81 and the second connecting plate 82. In one embodiment, as shown in fig. 2, the length dimension (in the length direction of the connecting plate) of the rotating shaft members 1 is short, and a plurality of rotating shaft members 1 are arranged at intervals in the length direction of the connecting plate. In another embodiment, as shown in fig. 8-10, the length dimension (along the length direction of the connecting plate) of the rotating shaft member 1 is longer, and extends from one end of the connecting plate to the other end along the length direction of the connecting plate, and the rotating shaft portion 102 may be provided with a pin to realize the rotating connection between the rotating shaft portion 102 and the corresponding connecting plate.

The two rotating shaft portions 102 are provided to facilitate the rotating connection with the corresponding connecting plates. When the connecting plate is rotating, the rotating shaft piece 1 can not move along with the connecting plate and is always kept between the first connecting plate 81 and the second connecting plate 82, so that gaps on the connecting plate can be covered, the deformation area of the flexible screen 201 is supported through the connecting cover 101, and the deformation area of the flexible screen 201 can be effectively supported. The connection cover 101 is provided with a through wire hole 103 for allowing a wire or a flexible circuit board to pass through, thereby realizing electrical connection between the housings on both sides.

Alternatively, the cross section of the shaft member 1 in the width direction of the connecting plate is substantially in an inverted U-shaped configuration, the connection is achieved by the two lower rotating shaft portions 102, and the support is achieved by the upper connecting cover 101, so that the weight of the shaft member 1 can be reduced to the maximum.

In another embodiment of the present disclosure, as shown in fig. 2 and 5, the rotating shaft assembly further includes two support glands 2. The rotating shaft part 1 is arranged between two supporting pressing covers 2, the two supporting pressing covers 2 are respectively connected with the first connecting plate 81 and the second connecting plate 82, a rotating shaft groove is arranged between each supporting pressing cover 2 and the corresponding connecting plate, and the rotating shaft part 102 is arranged in the corresponding rotating shaft groove. Each supporting gland 2 is arranged between the corresponding connecting plate and the rotating shaft member 1.

When the installation, the rotating shaft part 102 of the rotating shaft member 1 can be arranged in the rotating shaft groove, and then the rotating shaft part 102 is limited in the rotating shaft groove by connecting the supporting gland 2 with the corresponding connecting plate, so that the rotating connection of the rotating shaft part 102 and the corresponding connecting plate can be realized. And set up between connecting plate and pivot spare 1 and support gland 2, can cover the clearance between connecting plate and the pivot spare 1 through supporting gland 2 to can carry out firm support to the deformation zone of flexible screen 201.

As shown in fig. 2 and 5, each of the first and

second connection plates

81 and 82 is provided with a lower shaft groove 83, and the bottom of each support cover 2 is provided with an upper shaft groove 203, and the lower shaft groove 83 and the corresponding upper shaft groove 203 form a shaft groove. Alternatively, the shaft portion 102 of the shaft member 1 may be cylindrical, the upper shaft groove 203 may be a semicircular structure, and the lower shaft groove 83 may be a semicircular structure. When the connecting plate is installed, the rotating shaft part 102 of the rotating shaft member 1 can be placed in the rotating shaft lower groove 83, then the supporting gland 2 is covered on the corresponding rotating shaft part 102, and the supporting gland 2 is connected with the corresponding connecting plate, so that the rotating connection between the rotating shaft part 102 and the corresponding connecting plate is realized.

In other embodiments, the rotating shaft portion 102 of the rotating shaft member 1 may be fixed to the corresponding connecting plate by an annular clip, and both ends of the rotating shaft portion 102 are inserted into the clip and are in clearance fit with the clip.

As shown in fig. 2, 5, 8 and 9, the connection cover 101 is provided with a first support plane 1011, and a support portion 201 is provided on a side of the support cover 2 facing away from the rotation shaft groove. The support portion 201 is provided with a second support plane 2011, and when the first connecting plate 81 and the second connecting plate 82 are unfolded, the first support plane 1011 and the second support plane 2011 are in the same plane. Therefore, the deformation region of the flexible screen 201 in the unfolded state can be effectively supported by the first support plane 1011 and the second support plane 2011, and the deformation region of the flexible screen 201 is prevented from being depressed.

As shown in fig. 2 and 5, the supporting gland 2 is provided with a wire passing groove 202, the wire passing groove 202 extends along the width direction of the connecting plate, and the wire passing holes 103 communicate the wire passing grooves 202 on the two supporting glands 2 to form the wire passing channel 110.

The wire passing hole 103 and the wire passing groove 202 form the wire passing passage 110 penetrating the support hinge device 300 by providing the wire passing groove 202 on the support cover 2. Moreover, the line passing channel 110 is more straight by arranging the line passing groove 202, so that the electric wire or the flexible circuit board and the like do not need to be bent and deformed when passing through, the electric wire or the flexible circuit board and the like are protected, and the line passing is easier. Alternatively, in an embodiment of the present disclosure, the wire passing groove 202 is opened on the supporting portion 201 of the supporting cover 2.

It is understood that, in other embodiments, when the upper surface of the supporting cover 2 is lower than the wire passing hole 103 of the shaft member 1, the wire passing groove 202 is not provided on the supporting cover 2, and the electric wire or the flexible circuit board, etc. can pass through the supporting hinge device 300 only through the wire passing hole 103 of the shaft member 1. It is also possible to form the wire passage 110 by providing holes in the support glands 2 that extend through the width of the connecting plate and by forming communicating holes in the two support glands 2.

In one embodiment of the present disclosure, as shown in fig. 2 to 4, first supporting arc surfaces 1012 are connected to both sides of the first supporting plane 1011. As shown in fig. 2 and 5, a second supporting arc 2012 is arranged on one side of the supporting portion 201 close to the rotating shaft member 1, the first supporting arc 1012 and the second supporting arc 2012 are coaxially arranged, and when the first connecting plate 81 and the second connecting plate 82 are folded, the first supporting arc 1012 and the second supporting arc 2012 are located in the same arc, so that the connection between the deformation region and the fitting region of the flexible screen 201 is smoothly supported by the arc. Therefore, the flexible screen 201 in the folded state can be effectively supported by the first supporting cambered surfaces 1012 and the second supporting cambered surfaces 2012, and the flexible screen 201 is prevented from being bent too much and damaged.

Alternatively, in one embodiment of the present disclosure, on a projection along the length direction of the connection plate, partial arcs of the first support arc 1012 and the second support arc 2012 may overlap and together form at least a quarter of an arc.

Alternatively, in an embodiment of the present disclosure, as shown in fig. 2, the rotating shaft assembly may include a plurality of rotating shaft members 1, the plurality of rotating shaft members 1 are disposed along a length direction of the connecting plate, each rotating shaft member 1 includes a connecting cover 101 and two rotating shaft portions 102, the two rotating shaft portions 102 are disposed below the connecting cover 101 at intervals, each rotating shaft member 1 is rotatably connected to the first connecting plate 81 and the second connecting plate 82 through the two rotating shaft portions 102, and the connecting cover 101 on at least one rotating shaft member 1 is provided with a wire passing hole 103 therethrough.

By arranging the plurality of separated rotating shaft pieces 1 along the length direction of the connecting plate, on one hand, the length of a single rotating shaft piece 1 is shortened, and the rotating shaft pieces 1 are convenient to process; on the other hand, when installing, the rotating shaft member 1 with the wire passing hole 103 can be installed or adjusted to a suitable position as required to facilitate wire passing, or a suitable number of rotating shaft members 1 with the wire passing holes 103 can be selected as required to be installed or adjusted to a suitable position. Namely, the rotating shaft member 1 with the wire passing holes 103 in a proper amount can be installed to a proper position according to different wire passing requirements, so that the wire passing is convenient, and the application range of the rotating shaft member 1 is enlarged.

In another aspect of the present disclosure, as shown in fig. 6 and 7, there is also provided a folding device 100 for a flexible screen. The folding device 100 for a flexible screen includes the above-described support hinge device 300.

The folding device 100 for a flexible screen further includes a first carrier 10, a second carrier 20, and a rotation connection mechanism 30. The first carrier 10 and the second carrier 20 are for jointly carrying the flexible screen 201. The first carrier 10 has a first accommodation cavity 141, the second carrier 20 has a second accommodation cavity 221, and the wire passage 110 communicates the first accommodation cavity 141 and the second accommodation cavity 221. The connecting mechanism 80 is disposed between the first bearing member 10 and the second bearing member 20, the first connecting plate 81 is slidably connected to the first bearing member 10, and the second connecting plate 82 is slidably connected to the second bearing member 20. The rotational connection mechanism 30 is connected between the first connection plate 81 and the second connection plate 82 so that the first carrier 10 and the second carrier 20 can slide synchronously with respect to the corresponding connection plates when rotating during the unfolding and folding of the folding device 100 for a flexible screen.

When the flexible screen 201 is unfolded or folded, the first bearing member 10 and the second bearing member 20 surround and bring the rotation connecting mechanism 30 into motion, so as to drive the first bearing member 10 and the second bearing member 20 to synchronously slide relative to the support hinge device 300. Specifically, when the flexible screen 201 is unfolded, the first bearing member 10 and the second bearing member 20 are both away from each other with respect to the support hinge device 300, so that the flexible screen 201 can be flattened, and the flexible screen 201 is prevented from being pressed to be arched to form wrinkles; when the flexible screen 201 is folded, the first bearing member 10 and the second bearing member 20 are driven by the rotating connection mechanism 30 to approach each other with respect to the supporting hinge device 300, so that the flexible screen 201 can be prevented from being pulled. The wire passage 110 communicates the first accommodating cavity 141 with the second accommodating cavity 221, so that a wire or a flexible circuit board and the like can enter the second accommodating cavity 221 from the first accommodating cavity 141, and the two accommodating cavities are electrically connected.

As shown in fig. 16 and 17, the first carrier 10 is provided with a plurality of first gear teeth 13 at intervals on one side close to the connecting mechanism 80, and the second carrier 20 is provided with a plurality of second gear teeth 21 at intervals on one side close to the connecting mechanism 80. As shown in fig. 2 and 5, a plurality of first sliding grooves 204 and a plurality of second sliding grooves 205 are respectively disposed at intervals on two sides of the rotating shaft assembly, the first gear shaping 13 is slidably disposed on the corresponding first sliding grooves 204, and the second gear shaping 21 is slidably disposed on the corresponding second sliding grooves 205.

Through set up assorted spout and gear shaping on bearing the piece and pivot subassembly, can with the pivot subassembly with correspond the clearance fragmentation that holds between the piece, avoid appearing the continuous clearance of large tracts of land, guaranteed the effective support to flexible screen 201.

Alternatively, in an embodiment of the present disclosure, the rotation connecting mechanism 30 is connected to the ends of the first connecting plate 81 and the second connecting plate 82, the rotation shaft assembly further includes two supporting glands 2 extending along the length direction of the connecting plates, the two supporting glands 2 are respectively connected with the first connecting plate 81 and the second connecting plate 82, the first sliding groove 204 is disposed on the upper surface of one of the supporting glands 2, and the second sliding groove 205 is disposed on the upper surface of the other supporting gland 2.

It will be appreciated that in other embodiments, the sliding groove may be formed on the upper surface of the shaft member 1.

In one embodiment of the present disclosure, as shown in fig. 16, the first carrier 10 includes a first housing 14 and a first flexible screen support plate 15 which are mutually covered, and the first housing 14 is provided with a first accommodating chamber 141. The second carrier 20 includes a second housing 22 and a second flexible screen support plate 23 which are mutually covered, and the second housing 22 is provided with a second accommodating cavity 221. The first gear shaping 13 is arranged on the first flexible screen support plate 15, and the second gear shaping 21 is arranged on the second flexible screen support plate 23. The first connecting plate 81 is slidably connected to the first housing 14, and the second connecting plate 82 is slidably connected to the second housing 22. The flexible screen 201 supporting plate is arranged to support the attaching area of the flexible screen 201 conveniently.

As shown in fig. 16, the first flexible supporting plate includes a first toothed portion 151 and a first bearing portion 152 for supporting the flexible screen 201, the first gear shaping 13 is disposed on the first toothed portion 151, an upper surface of the first toothed portion 151 is lower than an upper surface of the first bearing portion 152, the second flexible supporting plate includes a second toothed portion 231 and a second bearing portion 232 for supporting the flexible screen 201, the second gear shaping 21 is disposed on the second toothed portion 231, and an upper surface of the second toothed portion 231 is lower than an upper surface of the second bearing portion 232.

The folding device 100 for a flexible screen further includes a flexible supporting sheet 90 extending along the length direction of the connecting plate, two sides of the flexible supporting sheet 90 are respectively attached to and connected to the first and

second teeth

151 and 231, and when the folding device 100 for a flexible screen is unfolded, as shown in fig. 16 and 17, upper surfaces of the flexible supporting sheet 90, the first bearing portion 152 and the second bearing portion 232 are located on the same plane, so that a deformation region of the flexible screen 201 can be completely and stably supported when the folding device is unfolded.

Alternatively, the flexible supporting sheet 90 may be a thin steel sheet with certain strength and toughness, or may be a thin copper sheet or alloy sheet with certain strength and toughness.

A rotary connection 30 to which the present disclosure is applicable is described below. The rotation connection mechanism 30 includes a hinge mechanism, a synchronous transmission mechanism, and a damping mechanism. The rotation connecting mechanism 30 may be disposed at both ends or one end of the connecting plate in the length direction, and is connected between the first connecting plate 81 and the second connecting plate 82.

The first bearing part 10 and the second bearing part 20 realize relative rotation through a hinge mechanism arranged between the first bearing part and the second bearing part, so that the flexible screen 201 is driven to rotate, and the flexible screen 201 is unfolded and folded. The synchronous transmission mechanism is in transmission connection between the hinge mechanism and the corresponding bearing piece, so that during the unfolding and folding processes of the folding device 100 for the flexible screen, the first bearing piece 10 and the second bearing piece 20 can surround and drive the hinge mechanism to rotate, and meanwhile, the synchronous transmission mechanism drives the first bearing piece 10 and the second bearing piece 20 to synchronously slide relative to the hinge mechanism, so that the flexible screen 201 is driven to slide. The damping mechanism is used to apply a damping that enables the folding device to be maintained at a desired deployment angle. And the directions X of the synchronous sliding are all directions perpendicular to the axis of the rotating shaft when the folding device 100 for the flexible screen is folded.

Through the technical scheme, when the flexible screen 201 is unfolded or folded, the first bearing part 10 and the second bearing part 20 surround and drive the hinge mechanism to rotate, and when the hinge mechanism rotates, the synchronous transmission mechanism is driven to work, so that the synchronous transmission mechanism drives the first bearing part 10 and the second bearing part 20 to synchronously slide relative to the hinge mechanism. Specifically, when the flexible screen 201 is unfolded, under the driving of the synchronous transmission mechanism, the first bearing part 10 and the second bearing part 20 are both far away from each other relative to the hinge mechanism, so that the flexible screen 201 can be flattened, and the flexible screen 201 is prevented from being squeezed to be arched to form folds; when the flexible screen 201 is folded, the first bearing part 10 and the second bearing part 20 are close to each other relative to the hinge mechanism under the driving of the synchronous transmission mechanism, so that the flexible screen 201 can be prevented from being pulled. Therefore, in the process of unfolding and folding, the folding device 100 for the flexible screen in the present disclosure can always keep the flexible screen 201 in a smooth state through the synchronous sliding of the first bearing member 10 and the second bearing member 20, so as to avoid the extrusion or pulling of the flexible screen 201, thereby effectively reducing the possible damage to the flexible screen 201, and improving the service life of the flexible screen 201.

In one embodiment of the present disclosure, as shown in fig. 20 to 26, the hinge mechanism includes a first rotating member 41, a second rotating member 42, a first pin 43, a second pin 44, and a hinge base 45, the first rotating member 41 is slidably connected to the first bearing member 10 and is hinged to the hinge base 45 through the first pin 43, and the second rotating member 42 is slidably connected to the second bearing member 20 and is hinged to the hinge base 45 through the second pin 44.

When the folding device 100 for a flexible screen is unfolded and folded, the first bearing member 10 drives the first rotating member 41 to rotate around the first pin 43 relative to the hinge base 45, and simultaneously, the first bearing member 10 slides synchronously relative to the first rotating member 41. Similarly, while the second bearing element 20 drives the second rotating element 42 to rotate around the second pin 44 relative to the hinge base 45, the second bearing element 20 slides synchronously relative to the second rotating element 42. Therefore, the flexible screen 201 can be always kept in a smooth state by the sliding of the bearing piece relative to the rotating piece, and the flexible screen 201 is prevented from being squeezed or pulled. And through set up sliding fit's the carrier and rotate the piece respectively in the both sides of hinge seat 45, when expandeing with folding, the first carrier 10 that holds and the second holds carrier 20 and drives the both sides of flexible screen 201 and slide jointly respectively, can accelerate the speed of the exhibition of flexible screen 201 flat on the one hand, and on the other hand can make the stress of flexible screen 201 both sides even, has reduced the damage that flexible screen 201 probably produced because of the atress is uneven.

It is understood that in other embodiments, the hinge mechanism may be formed in any suitable structure and shape according to design requirements, as long as the hinge connection between the first rotating member 41 and the second rotating member 42 can be achieved, for example, only one rotating shaft may be provided, and both the first rotating member 41 and the second rotating member 42 are sleeved on the rotating shaft and rotate around the rotating shaft.

In one embodiment of the present disclosure, referring to fig. 20 to 26, the synchronous transmission mechanism includes a first transmission mechanism 60 and a second transmission mechanism 70, the first transmission mechanism 60 is connected with the first rotating member 41 and is drivingly connected between the hinge base 45 and the first carrier 10, the second transmission mechanism 70 is connected with the second rotating member 42 and is drivingly connected between the hinge base 45 and the second carrier 20, such that when the flexible screen is folded or unfolded with the folding device 100, the first transmission mechanism 60 converts a rotation angle of the first rotating member 41 relative to the hinge base 45 into a movement displacement to drive the first carrier 10 to synchronously slide relative to the hinge base 45, and the second transmission mechanism 70 converts a rotation angle of the second rotating member 42 relative to the hinge base 45 into a movement displacement to drive the second carrier 20 to synchronously slide relative to the hinge base 45.

When the folding device 100 for the flexible screen is unfolded and folded, the first rotating member 41 and the second rotating member 42 respectively rotate around the hinge base 45 and drive the first transmission mechanism 60 and the second transmission mechanism 70 to start transmission work, so that the first transmission mechanism 60 drives the first bearing member 10 to slide relative to the first rotating member 41, and the second transmission mechanism 70 drives the second bearing member 20 to slide relative to the second rotating member 42, thereby realizing synchronous sliding of the first bearing member 10 and the second bearing member 20 while the first rotating member 41 and the second rotating member 42 rotate around the hinge base 45.

Further, as shown in fig. 20 to 24, the synchronous transmission mechanism includes a first transmission mechanism 60 and a second transmission mechanism 70 respectively connected to two sides of the hinge base 45 in a transmission manner, the first rotating member 41 is provided with a pair of first clamping arms 411 arranged oppositely, the second rotating member 42 is provided with a pair of second clamping arms 423 arranged oppositely, the first transmission mechanism 60 is connected between the pair of first clamping arms 411, the second transmission mechanism 70 is connected between the pair of second clamping arms 423, the hinge base 45 is hinged to an end of the first clamping arm 411 through a first pin 43, and the hinge base 45 is hinged to an end of the second clamping arm 423 through a second pin 44.

By configuring the first rotating member 41 and the second rotating member 42 in the shape of clip arms, and disposing the first transmission mechanism 60 and the second transmission mechanism 70 between the clip arms. With such an arrangement, the first rotating member 41 and the second rotating member 42 can be conveniently connected with the first transmission mechanism 60 and the second transmission mechanism 70, so that the first rotating member 41 and the second rotating member 42 can respectively drive the first transmission mechanism 60 and the second transmission mechanism 70 to perform transmission work when rotating around the hinge base 45; and the hinge mechanism and the synchronous transmission mechanism have compact integral structure, especially, the thickness of the folding device 100 for the flexible screen is not additionally increased, the volume and the thickness of the folding device 100 for the flexible screen are reduced as much as possible, and the requirement of lightening and thinning the mobile terminal 200 is conveniently met when the folding device 100 for the flexible screen is applied to the mobile terminal 200.

Further, as shown in fig. 20 to 23, the outer circumference of the hinge base 45 is provided with a plurality of teeth, the first transmission mechanism 60 includes a rack 61 and a gear set 62, the rack 61 is fixed to the first carrier 10, two sides of the gear set 62 are respectively engaged with the hinge base 45 and the rack 61, the gear set 62 includes a plurality of gears engaged with each other, the rotating shafts of the gear set 62 are all fixed to the first rotating member 41, the first rotating member 41 rotates relative to the hinge base 45 to drive the gears in the gear set 62 to rotate around the hinge base 45, and the rack 61 is further driven to slide by the transmission of the gear set 62 to drive the first carrier 10 to synchronously slide relative to the hinge base 45. It will be appreciated that only one gear may be provided in the gear set 62, or a plurality of intermeshing gears may be provided.

When the folding device 100 for the flexible screen is unfolded and folded, the first rotating member 41 and the second rotating member 42 respectively rotate around the first pin shaft 43 and the second pin shaft 44, and drive the gears in the first transmission mechanism 60 to be in meshing transmission with the teeth on the periphery of the hinge base 45, and then drive the rack 61 to slide through the meshing transmission between the gears in the gear set 62, so as to drive the first carrier 10 fixedly connected with the rack 61 to synchronously slide relative to the hinge base 45. Through set up a plurality of teeth in the periphery of hinge seat 45, utilize the pivot to be fixed in the gear that rotates on the piece and the tooth meshing on the hinge seat 45 to make the piece that rotates can drive the gear rotation in the gear train 62, then through the cooperation of gear and rack 61, thereby realized converting the turned angle of rotation piece into the removal displacement that drives the carrier and remove.

In other embodiments, other transmission mechanisms may be used to convert the rotation angle of the rotating member into a displacement driving the bearing member to move, for example, a slider-crank mechanism may be used to fixedly connect the slider and the bearing member, and the rotating member is used as the first connecting rod, and the first connecting rod is connected to the slider through the second connecting rod.

As shown in fig. 20 and 21, in order to increase the sliding displacement of the rack 61, at least one of the gears in the gear train 62 is a duplicate gear. The duplicate gear comprises a small gear and a large gear, the small gear is meshed with the hinge seat 45 or a gear close to one side of the hinge seat 45, and the large gear is meshed with the rack 61 or a gear close to one side of the rack 61. Wherein, the reference circle diameter of the small gear is smaller than that of the big gear.

During folding or unfolding, the rotary part is generally able to bring the gear wheel into rotation by at most 90 ° relative to the hinge block 45, so that the maximum angle at which the gear wheel meshing with the hinge block 45 can rotate is fixed. If the gear transmission is performed through a common gear, the rack 61 moves by a distance equal to the linear displacement of the outer periphery of the gear. And the linear displacement of the gear periphery is equal to the arc length that the gear engaged with the hinge base 45 travels on the hinge base 45 when rotating. Therefore, if the sliding distance of the rack 61 needs to be increased, the thickness of the folding device 100 for a flexible screen can be increased only by increasing the outer diameter of the hinge base 45, which cannot meet the requirement of being light and thin when applied to the mobile terminal 200.

In the present disclosure, since the dual gear is provided, when the dual gear rotates, the pinion gear in the dual gear drives the bull gear to rotate, the linear displacement of the outer periphery of the bull gear is larger than the linear displacement of the outer periphery of the pinion gear, the linear displacement is amplified by the dual gear, and then the bull gear is meshed with the rack 61 or the gear close to one side of the rack 61, so that the sliding displacement of the rack 61 can be increased. That is, by providing the dual gear, the sliding displacement of the rack 61 can be increased even when the rotating member rotates by the same angle without changing the periphery of the hinge base 45, so as to satisfy the requirement of the carrier for extending the flexible screen 201, and at the same time, the requirement of the carrier for being light and thin when applied to the mobile terminal 200 can be satisfied.

As shown in fig. 20 to 23, in order to effectively increase the slidable displacement of the rack 61, the gear train 62 includes a first duplicate gear 621, a second duplicate gear 622, and a transmission gear 623. The small gear of the first duplicate gear 621 is meshed with the hinge base 45, the large gear of the first duplicate gear 621 is meshed with the small gear of the second duplicate gear 622, the large gear of the second duplicate gear 622 is meshed with the transmission gear 623, and the transmission gear 623 is in meshed transmission with the rack 61.

By providing the first duplicate gear 621 and the second duplicate gear 622, the linear displacement of the outer periphery of the gears can be amplified in two stages, and the sliding displacement of the rack 61 is further enlarged. Therefore, while the requirement of the carrier for extending the flexible screen 201 is satisfied, the design of the hinge base 45 and the first transmission mechanism 60 can be minimized, and the outer diameters of the hinge base 45 and the gear in the gear set 62 are reduced, so that the whole rotary connection mechanism 30 is thinner and lighter, and the thickness of the whole folding device 100 for the flexible screen is not increased additionally.

As shown in fig. 24, the first rotating member 41 is provided with a pair of first clamping arms 411 arranged oppositely, the hinge base 45 and the gear set 62 are both arranged between the pair of first clamping arms 411, the hinge base 45 is arranged at the end of the pair of first clamping arms 411, the first pin 43 is arranged through the hinge base 45 and the pair of first clamping arms 411, and the rotating shaft of the gear set 62 is arranged through the pair of first clamping arms 411.

By arranging the first transmission mechanism 60 between the first clamping arms 411 and fixing the rotating shaft in the gear set 62 through the first clamping arms 411, on one hand, when the first rotating member 41 rotates, the rotating shaft of the gear fixed thereon only drives the gear to mesh around the hinge base 45 for transmission, and no additional mechanism is needed, so that the first transmission mechanism 60 can be conveniently driven to work, thereby simplifying the structural design of the whole rotating connection mechanism 30, and having compact overall structure and no additional space occupation; on the other hand, because the gear sets 62 are all mounted on the first clamping arm 411 through the rotating shaft, when the first transmission mechanism 60 rotates around the hinge base 45 along with the rotating member, the transmission of the gear sets 62 inside the first transmission mechanism 60 is not affected at all, and the stability of the transmission is ensured.

Further, the thickness of the hinge base 45 along the length direction of the first pin shaft 43 is greater than the thickness of each gear of the gear set 62. So set up, hinge seat 45 can strut first arm lock 411 for interval between the first arm lock 411 is greater than the thickness of every gear, thereby can not produce the friction with the first arm lock 411 of both sides when the gear rotates, and first arm lock 411 can not influence the rotation of gear promptly, thereby makes the transmission of gear 62 middle gear more smooth, also can not produce the abnormal sound when rotating.

As shown in fig. 17 to 19, one side of the first carrier 10 and the second carrier 20 for carrying the flexible screen 201 is a front surface 11, and the other side opposite to the front surface 11 is a back surface 12, and when the folding device 100 for flexible screen is in a folded state, the two back surfaces 12 of the first carrier 10 and the second carrier 20 are attached to each other. In order to enable the rack 61 to slide in the correct direction when the folding device 100 for a flexible screen is folded and unfolded, the gear set 62 includes an odd number of gears when the rack 61 is closer to the rear surface 12 with respect to the gear set 62, i.e., the rack 61 is located below the gears shown in fig. 17-20; or

When the rack 61 is closer to the front face 11 than the gear set 62, i.e., the rack 61 is above the gears, the gear set 62 includes an even number of gears. It should be noted that since the duplicate gear does not change the transmission direction of the gears, one duplicate gear having the large gear and the small gear is one gear when counting the number of gears.

As shown in fig. 23, a gear train 62 having an odd number of gears will be described as an example. When the folding device 100 for a flexible screen is converted from the unfolded state to the folded state in the drawing, the first rotating member 41 on the right side rotates clockwise to drive the gear engaged with the hinge base 45 to rotate clockwise, and since the gear set 62 has an odd number of gears, the gear associated with the rack 61 also rotates clockwise, and therefore, the rack 61 located below the gear is driven to slide in a direction approaching the hinge base 45. Similarly, the second rotating element 42 rotates counterclockwise at this time, and also drives the rack 61 located below the gear to slide toward the hinge seat 45. Therefore, when the folding device 100 for a flexible screen is folded, the first bearing member 10 and the second bearing member 20 are driven by the rack 61 to approach the hinge base 45, so as to adapt to the deformation of the corresponding flexible screen 201. On the contrary, when the folding device 100 for a flexible screen needs to be unfolded, the first rotating member 41 rotates counterclockwise, the second rotating member 42 rotates clockwise, and the first bearing member 10 and the second bearing member 20 are driven by the rack 61 to move away from the hinge base 45, so as to flatten the flexible screen 201. When the gear set 62 has an even number of gears, the principle is the same as that of the gear set 62 having an odd number of gears, and the description thereof is omitted.

In order to prevent the rack 61 from interfering with the synchronous transmission mechanism when moving, the rack 61 is slidably disposed at the bottom of the first rotating member 41, as shown in fig. 20 and 24, a stopping portion 412 is disposed at one end of the bottom of the first rotating member 41 close to the hinge base 45, the stopping portion 412 is disposed to protrude downward relative to the bottom surface of the first rotating member 41, and the stopping portion 412 is used for limiting the minimum distance between the end of the rack 61 and the hinge base 45. Therefore, when the folding device 100 for the flexible screen is folded, the maximum displacement of the rack 61 when sliding towards the hinge seat 45 can be limited, and the interference which is possibly caused to the meshing transmission of the hinge seat 45 and the gear set 62 when the rack 61 slides to the vicinity of the hinge seat 45 can be avoided.

In one embodiment of the present disclosure, as shown in fig. 20-23, the second transmission mechanism 70 is identical in structure to the first transmission mechanism 60 and is symmetrically arranged with respect to the hinge base 45. Therefore, the structural design can be simplified, the first bearing part 10 and the second bearing part 20 can slide synchronously, and the flexible screen 201 is prevented from being damaged due to uneven stress. It is understood that in other embodiments, the specific structure of the second transmission mechanism 70 may be different from the first transmission mechanism 60. The second transmission mechanism 70 is similar to the first transmission mechanism 60, and simple modifications are made to the structure of the first transmission mechanism 60, such as changing the relative positions of the gears in the gear set 62, or changing the number and size of the gears, so long as the carriers are driven to slide when the rotary member rotates.

In order to realize the synchronous rotation of the first bearing member 10 and the second bearing member 20, the first rotating member 41 is provided with a plurality of first teeth 413 near the outer peripheral ring of the second rotating member 42, the second rotating member 42 is provided with a plurality of second teeth 421 meshed with the first teeth 413 near the outer peripheral ring of the first rotating member 41, and the first rotating member 41 and the second rotating member 42 are in mesh transmission. And the transmission ratio of the first rotating member 41 and the second rotating member 42 is 1.

The folding device 100 for a flexible screen can rotate more smoothly when being folded or unfolded by the meshing transmission of the first rotating member 41 and the second rotating member 42. Moreover, the synchronous rotation of the first rotating member 41 and the second rotating member 42 can be realized, and the same angular velocity can be maintained at any time, so that the first transmission mechanism 60 and the second transmission mechanism 70 can always have the same rotating speed, and therefore, the first bearing member 10 and the second bearing member 20 can slide at the same speed, the bending part of the flexible screen 201 is uniformly stressed, and the damage to the flexible screen 201 is reduced.

In order to maintain the folding device 100 for a flexible panel at a desired unfolding angle, as shown in fig. 20 and 21, the damping mechanism includes an elastic member and a friction plate connected to the hinge mechanism, and the elastic member has an elastic force pressing the friction plate against the hinge mechanism.

The hinge mechanism generates relative movement with the friction plate when rotating, so as to generate friction force, and the friction force between the hinge mechanism and the friction plate can be increased through the abutting pressure of the elastic piece to the friction plate, so that the folding device 100 for the flexible screen can be kept at a required unfolding angle. Meanwhile, the hinge mechanism generates friction force with the friction plate when rotating, namely, generates rotation damping, so that a user feels better when folding or unfolding the folding device 100 for the flexible screen, and the user experience is improved.

In the present disclosure, it will be appreciated that the damping mechanism may be formed in any suitable configuration and shape as desired by design, so long as the hinge mechanism is capable of being maintained at the desired deployment angle. In one embodiment, as shown in fig. 20 and 21, the damping mechanism includes a first damping mechanism acting on the first rotating member 41 and a second damping mechanism acting on the second rotating member 42. The first damping mechanism and the second damping mechanism are similar in structure and provide damping on the same principle. It will be appreciated that the rotation angle of one of the first carrier 10 and the second carrier 20 need only be limited, as the other is held by a user or placed on a table top, so that the folding device 100 for a flexible screen can be maintained at a desired deployment angle.

The first damping mechanism comprises a first friction plate 51 and a first elastic member 53, a first friction part 431 and a first abutting part 46 are respectively arranged at two ends of a first pin shaft 43, the first pin shaft 43 slidably penetrates through the first friction plate 51, a hinge seat 45 and a first rotating part 41, the hinge seat 45 and the first rotating part 41 are positioned between the first friction plate 51 and the first friction part 431, and two ends of the first elastic member 53 abut against the first abutting part 46 and the first friction plate 51 and are used for providing elastic force for enabling the first friction plate 51, the hinge seat 45, the first rotating part 41 and the first friction part 431 to be tightly attached to each other; and/or

The second damping mechanism includes a second friction plate 52 and a second elastic element 54, a second friction portion 441 and a second abutting portion 47 are respectively disposed at two ends of the second pin shaft 44, the second pin shaft 44 slidably penetrates through the second friction plate 52, the hinge base 45 and the second rotating element 42 are located between the second friction plate 52 and the second friction portion 441, and two ends of the second elastic element 54 abut against the second abutting portion 47 and the second friction plate 52, and are used for providing an elastic force for enabling the second friction plate 52, the hinge base 45, the second rotating element 42 and the second friction portion 441 to be tightly attached to each other.

The first pin 43 is disposed on the first connecting plate 81, and the second pin 44 is disposed on the second connecting plate 82. The rotary connecting mechanism 30 rotates around the first pin 43 and the second pin 44, respectively. The first pin shaft 43 and the second pin shaft 44 correspond to the rotating shaft portion 102 of the rotating shaft member 1 in the support hinge device 300, and are coaxially disposed. The first pin 43 and the corresponding rotating shaft portion 102 of the rotating shaft member 1 together form a central rotating shaft of one of the folding devices 100, and the second pin 44 and the corresponding rotating shaft portion 102 of the rotating shaft member 1 together form another central rotating shaft of the folding device 100.

The folding apparatus 100 for a flexible panel having both a first damping mechanism and a second damping mechanism will be described as an example. When the folding device 100 for the flexible screen is folded and unfolded, the first rotating piece 41 and the second rotating piece 42 rotate relative to the hinge base 45, and due to the abutting action of the elastic piece on the friction piece, the hinge base 45, the rotating piece and the friction part are close to each other and are tightly attached to each other, so that friction force is generated between components (such as between the friction piece and the rotating piece, and between the hinge base 45 and the rotating piece) which generate relative motion or have relative motion tendency, namely damping which hinders the rotation of the rotating piece is generated, the rotation of the first bearing piece 10 and the second bearing piece 20 is hindered, and the folding device 100 for the flexible screen can be kept at a required unfolding angle.

In order to further increase the surface generating the friction force, as shown in fig. 25, the first pin 43 includes a pin portion 432 having a kidney-shaped cross section, the kidney-shaped cross section includes oppositely disposed circular arcs 433, the circular arcs 433 are all circular, the first friction portion 431 is disposed at an end portion of the pin portion 432, the pin portion 432 is slidably disposed through the first friction plate 51, the first rotating member 41 and the hinge base 45 in sequence, the first friction plate 51 and the hinge base 45 are respectively provided with a kidney-shaped hole 434 engaged with the pin portion 432, and the first rotating member 41 is provided with a circular hole 415 engaged with the pin portion 432.

Because the circular hole 415 is formed in the first rotating member 41, after the first rotating member 41 is matched with the pin portion 432 with the kidney-shaped cross section, the first rotating member 41 can still rotate around the first pin 43, and the rotation of the first rotating member 41 around the first pin 43 is not affected. Moreover, since the first friction plate 51 and the hinge seat 45 are provided with the waist-shaped holes 434, and the waist-shaped holes 434 are sleeved on the pin shaft part 432 with the waist-shaped cross section, the first friction plate 51 and the hinge seat 45 cannot rotate around the first pin shaft 43, so that the first pin shaft 43 cannot rotate along with the first rotating member 41 when the first rotating member 41 rotates, and the first friction plate 51 cannot rotate around the first pin shaft 43 along with the first rotating member 41 under the friction of the first rotating member 41. Therefore, when the first rotating member 41 rotates around the first pin 43, relative movement is generated between the first friction plate 51 and the first rotating member 41, so as to generate a friction force for resisting the rotation of the first rotating member 41, thereby increasing the surface capable of generating the friction force, increasing the damping force for resisting the rotation of the rotating member, and making the folding device 100 for a flexible screen more stable when being kept at a required unfolding angle.

In the present disclosure, as shown in fig. 24, the first rotating member 41 may be formed in any suitable structure and shape according to design requirements, and in one embodiment, the first rotating member 41 is provided with a pair of first clamping arms 411 which are oppositely arranged. The pair of first clamp arms 411 can have elasticity when approaching or departing from each other, the hinge base 45 is clamped between the pair of first clamp arms 411, the first pin 43 sequentially passes through one of the first clamp arms 411, the hinge base 45, the other first clamp arm 411, the first friction plate 51, the first elastic piece 53 and the first stopper 46, the first friction part 431 and the first friction plate 51 are respectively abutted against two sides of the pair of first clamp arms 411, and the first elastic piece 53 is used for providing elastic force for enabling the first friction plate 51, the pair of first clamp arms 411, the hinge base 45 and the first friction part 431 to be tightly attached to each other.

Through arranging the first clamping arms 411 to clamp the hinge base 45 between the first clamping arms 411, when the first rotating member 41 rotates around the first pin 43, friction force can be generated between the first rotating member and both sides of the hinge base 45, and the surface capable of generating friction force is increased. Moreover, the first clamping arm 411 has certain elasticity, and the first friction part 431 and the first friction plate 51 which are positioned at two sides of the first clamping arm 411 extrude the first clamping arm 411 and the first friction plate 51, so that the first clamping arm 411 and the hinge base 45 are attached more tightly, the pressure between the first clamping arm 411 and the hinge base 45 is increased, the friction force between the first clamping arm 411 and the hinge base 45 can be increased, and the damping for blocking the rotation of the rotating part is increased. Therefore, by providing the pair of first clamping arms 411, not only the surface generating friction force can be increased, but also the friction force between the hinge base 45 and the first rotating member 41 can be increased, and the damping resisting the rotation of the rotating member can be effectively increased, so that the folding device 100 for a flexible screen can be more stably maintained at a required unfolding angle.

It can be understood that the first clamping arm 411 has elasticity as long as it can facilitate clamping the hinge seat 45 placed therein, and therefore, the first clamping arm 411 may be configured to be long, and the shape thereof is realized by the elasticity. Alternatively, the first clip arm 411 may be made of a material with relatively low rigidity, such as plastic or aluminum. Alternatively, in one embodiment of the present disclosure, as shown in fig. 24, the first rotating member 41 is configured in a U-shaped structure. The pair of first clamping arms 411 are two opposite side plates of a U-shaped structure, and the first pin 43 penetrates through the end portions of the two side plates. Set up first arm lock 411 to U type structure, every arm lock is cantilever structure, consequently can have certain elasticity by shape itself to be convenient for press from both sides the hinge seat 45 through two curb plates of U type structure tightly, thereby the increase hinders the damping that first rotating member 41 rotated. Meanwhile, as described above, the U-shaped structure can also arrange the synchronous transmission mechanism in the space of the U-shaped structure, so that the structure is more compact, and the synchronous transmission mechanism can be conveniently driven to work.

In order to adjust the pressing force of the elastic member on the friction plate, as shown in fig. 20-22, the first abutting member 46 may be a nut, a thread matching with the nut is disposed on the first pin 43, and two ends of the first elastic member 53 abut against the nut and the friction plate, so that the pressing force of the elastic member on the friction plate can be adjusted as required, so that the first friction plate 51 and the first friction portion 431 can effectively press the hinge seat 45 and the first rotating member 41 disposed therein, and a suitable amount of damping is generated to prevent the rotating member from rotating.

In order to prevent the first rotating member 41 and the second rotating member 42 from over-rotating, in an embodiment of the present disclosure, as shown in fig. 20 and 24, a side of the first rotating member 41 close to the second rotating member 42 is provided with a first limiting wall 414, a side of the second rotating member 42 close to the first rotating member 41 is provided with a second limiting wall 422, and when the folding device 100 for a flexible screen is unfolded to 180 °, the first limiting wall 414 abuts against the second limiting wall 422, so that the first rotating member 41 and the second rotating member 42 can be prevented from further rotating, the maximum rotating angle of the first bearing member 10 and the second bearing member 20 is further limited, and the flexible screen 201 is prevented from being damaged by over-rotating.

In order to facilitate the connection of the rotational connection mechanism 30 to the first carrier 10 and the second carrier 20, the folding device 100 for a flexible screen further comprises a connection mechanism 80 connected between the first carrier 10 and the second carrier 20. The connecting mechanism 80 includes a first connecting plate 81 and a second connecting plate 82, and the first connecting plate 81 and the second connecting plate 82 extend in the direction of the rotational axis of the folding device when folded. The first rotating member 41 is fixed at an end of the first connecting plate 81, the first connecting plate 81 is slidably connected to the first bearing member 10, the second rotating member 42 is fixed at an end of the second connecting plate 82, the second connecting plate 82 is slidably connected to the second bearing member 20, the first rotating member 41 is slidably connected to the first bearing member 10 through the first connecting plate 81, the second rotating member 42 is slidably connected to the second bearing member 20 through the second connecting plate 82, and the first rotating member 41 and the second rotating member 42 are hinged to each other through a hinge mechanism.

In order to enable the folding device 100 for a flexible screen to synchronously rotate and slide along both sides in the direction of the rotation axis when folded, in one embodiment of the present disclosure, the number of the rotation connection mechanisms 30 is two, and the rotation connection mechanisms are respectively provided at both ends of the connection mechanism 80. This enables the folding device to fold the flexible screen 201 simultaneously along both sides of the axis of rotation. In addition, the connection mechanism 80 and the first carrier 10 and the second carrier 20 can form the same plane when the folding device is unfolded to support the middle bent portion of the flexible screen 201.

Specifically, the connection mechanism 80 is generally in an i-shaped structure as a whole, the rotating connection mechanism 30 is installed at two ends of the i-shaped structure, a guide bar extending along the sliding direction is provided on the sliding fit surface of the connecting plate and the bearing member, and correspondingly, a sliding groove matched with the guide bar is provided on the bearing member, so that the sliding of the bearing member relative to the connecting plate can be guided.

In another aspect of the present disclosure, there is also provided a mobile terminal 200 including a flexible screen 201 and the folding device 100 for a flexible screen.

This mobile terminal 200 is when expanding or folding, first carrier 10 and second carrier 20 surround and drive the hinge mechanism and rotate, when the hinge mechanism rotates, drive synchronous drive mechanism work, thereby make first carrier 10 of synchronous drive mechanism drive and second carrier 20 drive flexible screen 201 and slide for the hinge mechanism is synchronous, in order to adapt to the change of first carrier 10 and second carrier 20 junction shape, thereby can make flexible screen 201 remain in the level and smooth state all the time, the extrusion or the pull to flexible screen 201 have been avoided, thereby can effectively reduce the damage that probably produces flexible screen 201 in the process of expanding and folding, the life of flexible screen 201 has been improved.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a support hinge means for folding device (100) is used to flexible screen, its characterized in that includes coupling mechanism (80) and pivot subassembly, coupling mechanism (80) are including first connecting plate (81) and second connecting plate (82) of mutual articulated, the pivot subassembly connect in between first connecting plate (81) and second connecting plate (82) and extend along the length direction of connecting plate, first connecting plate (81) with second connecting plate (82) respectively for the pivot subassembly rotates, the pivot subassembly is provided with wire passing channel (110), wire passing channel (110) run through along the width direction of connecting plate support hinge means (300).

2. The support hinge device according to claim 1, wherein the first connecting plate (81) and the second connecting plate (82) are respectively rotatable with respect to two central shafts, the rotating shaft assembly includes a rotating shaft member (1), the rotating shaft member (1) includes a connecting cover (101) and two rotating shaft portions (102), the two rotating shaft portions (102) are disposed below the connecting cover (101) at intervals, the rotating shaft portions (102) are disposed in one-to-one correspondence and coaxially with the central shafts, the rotating shaft member (1) is respectively rotatably connected with the first connecting plate (81) and the second connecting plate (82) through the two rotating shaft portions (102), and the connecting cover (101) is provided with a wire passing hole (103) therethrough.

3. The support hinge device according to claim 2, wherein the rotation shaft assembly further comprises two support glands (2), the rotation shaft member (1) is disposed between the two support glands (2), the two support glands (2) are connected with the first connection plate (81) and the second connection plate (82), respectively, a rotation shaft groove is disposed between each support gland (2) and the corresponding connection plate, and the rotation shaft portion (102) is disposed in the corresponding rotation shaft groove.

4. The supporting hinge device as claimed in claim 3, wherein the supporting gland (2) is opened with a wire passing groove (202), the wire passing groove (202) extends along the width direction of the connecting plate, and the wire passing hole (103) communicates the wire passing grooves (202) on the two supporting glands (2) to form the wire passing channel (110).

5. The support hinge device according to claim 3, wherein the connection cover (101) is provided with a first support plane (1011), a support portion (201) is provided on a side of the support cover (2) facing away from the rotation shaft groove, the support portion (201) is provided with a second support plane (2011), and when the first connection plate (81) and the second connection plate (82) are unfolded, the first support plane (1011) and the second support plane (2011) are in the same plane.

6. The support hinge device according to claim 5, wherein a first support arc surface (1012) is connected to two sides of the first support plane (1011), a second support arc surface (2012) is arranged on one side of the support portion (201) close to the rotating shaft member (1), the first support arc surface (1012) and the second support arc surface (2012) are coaxially arranged, and when the first connecting plate (81) and the second connecting plate (82) are folded, the first support arc surface (1012) and the second support arc surface (2012) are in the same arc surface.

7. The support hinge device according to claim 3, wherein the first connecting plate (81) and the second connecting plate (82) are each provided with a lower shaft groove (83), and the bottom of each support gland (2) is provided with an upper shaft groove (203), the lower shaft groove (83) and the corresponding upper shaft groove (203) forming the shaft groove.

8. The support hinge device according to claim 1, wherein the rotation shaft assembly includes a plurality of rotation shaft members (1), the plurality of rotation shaft members (1) are arranged along a length direction of the connecting plate, each rotation shaft member (1) includes a connecting cover (101) and two rotation shaft portions (102), the two rotation shaft portions (102) are arranged below the connecting cover (101) at intervals, each rotation shaft member (1) is rotatably connected with the first connecting plate (81) and the second connecting plate (82) through the two rotation shaft portions (102), and the connecting cover (101) on at least one rotation shaft member (1) is provided with a wire passing hole (103) therethrough.

9. Folding device for flexible screens, characterized in that it comprises a support hinge device (300) according to any one of claims 1 to 8.

10. The folding device for a flexible screen according to claim 9, characterized in that the folding device (100) for a flexible screen further comprises a first carrier (10), a second carrier (20) and a rotational connection mechanism (30), the first carrier (10) and the second carrier (20) are used for carrying the flexible screen together, the first carrier (10) has a first receiving cavity (141), the second carrier (20) has a second receiving cavity (221), the wire passage (110) communicates the first receiving cavity (141) with the second receiving cavity (221), the connection mechanism (80) is disposed between the first carrier (10) and the second carrier (20), the first connection plate (81) is slidably connected with the first carrier (10), and the second connection plate (82) is slidably connected with the second carrier (20), the rotating connection mechanism (30) is connected between the first connecting plate (81) and the second connecting plate (82) so that the first bearing piece (10) and the second bearing piece (20) can synchronously slide relative to the corresponding connecting plates when rotating during the unfolding and folding process of the folding device for the flexible screen.

11. The folding device for the flexible screen according to claim 10, wherein a plurality of first gear shaping teeth (13) are arranged at intervals on one side of the first bearing member (10) close to the connecting mechanism (80), a plurality of second gear shaping teeth (21) are arranged at intervals on one side of the second bearing member (20) close to the connecting mechanism (80), a plurality of first sliding grooves (204) and a plurality of second sliding grooves (205) are respectively arranged at intervals on two sides of the rotating shaft assembly, the first gear shaping teeth (13) are slidably arranged on the corresponding first sliding grooves (204), and the second gear shaping teeth (21) are slidably arranged on the corresponding second sliding grooves (205).

12. The folding device for the flexible screen according to claim 11, wherein the rotation connection mechanism (30) is connected to ends of the first connection plate (81) and the second connection plate (82), the rotation shaft assembly further comprises two support glands (2) extending along a length direction of the connection plates, the two support glands (2) are respectively connected to the first connection plate (81) and the second connection plate (82), the first sliding groove (204) is disposed on an upper surface of one of the support glands (2), and the second sliding groove (205) is disposed on an upper surface of the other support gland (2).

13. The folding device for the flexible screen according to claim 11, characterized in that the first bearing member (10) comprises a first housing (14) and a first flexible screen support plate (15) which are covered with each other, the first housing (14) is provided with the first accommodating cavity (141), the second bearing member (20) comprises a second housing (22) and a second flexible screen support plate (23) which are covered with each other, the second housing (22) is provided with the second accommodating cavity (221), the first gear (13) is provided in the first flexible screen support plate (15), the second gear (21) is provided in the second flexible screen support plate (23), the first connecting plate (81) is slidably connected with the first housing (14), and the second connecting plate (82) is slidably connected with the second housing (22).

14. The folding apparatus for a flexible screen according to claim 13, wherein the first flexible screen supporting plate (15) includes a first toothed portion (151) and a first bearing portion (152) for supporting a flexible screen, the first toothed portion (13) is provided to the first toothed portion (151), an upper surface of the first toothed portion (151) is lower than an upper surface of the first bearing portion (152), the second flexible screen supporting plate (23) includes a second toothed portion (231) and a second bearing portion (232) for supporting a flexible screen, the second toothed portion (21) is provided to the second toothed portion (231), an upper surface of the second toothed portion (231) is lower than an upper surface of the second bearing portion (232),

the folding device (100) for the flexible screen further comprises a flexible supporting sheet (90) extending along the length direction of the connecting plate, two sides of the flexible supporting sheet (90) are respectively attached to the first tooth inserting portion (151) and the second tooth inserting portion (231), and when the folding device (100) for the flexible screen is unfolded, the upper surfaces of the flexible supporting sheet (90), the first bearing portion (152) and the second bearing portion (232) are located on the same plane.

15. A mobile terminal, characterized in that it comprises a flexible screen and a folding device (100) for a flexible screen according to any one of claims 9 to 14.