CN112392850B - Support hinge device, folding device for flexible screen and mobile terminal - Google Patents

In the present disclosure, unless otherwise stated, the use of the directional words such as "upper and lower" generally means that when the

300 is applied to the

100 for a flexible screen, when in the unfolded state, the side for mounting the

201 is upper and the side away from the side for mounting the

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

201 when the

201 is applied to the

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

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

300 for a

100 for a flexible screen. The

300 includes a

80 and a rotary shaft assembly. The connecting

80 includes a first connecting

81 and a second connecting

82 hinged to each other. The

81 is for connection with one of the housings of the

200, and the

82 is for connection with the other housing of the

200. The first connecting

81 and the second connecting

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

81 and the second connecting

82 and extends along the length direction of the connecting plates. The rotating shaft assembly is provided with a

110, and the

110 penetrates through the

300 along the width direction of the connecting plate.

For convenience of description, the supporting

300 is applied to the

200, as shown in fig. 14, hereinafter in the present disclosure, the

201 covers the outer surface of the housing when the

200 is in a folded state, that is, two display surfaces of the

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

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

81 and second connecting

82 can appear the clearance when folding between the two, through set up the pivot between first connecting

81 and second connecting

82, can cover certain clearance, has ensured the effective support to

201 deformation zone. Meanwhile, the

110 penetrating along the width direction of the connecting plate is arranged, so that the shells on the two sides of the

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

201 deformation zone.

In one embodiment of the present disclosure, the spindle assembly includes a

1. The first connecting

81 and the second connecting

82 rotate with respect to two central axes, respectively. When the

300 is applied to the

200, the two housings of the

200 are rotated about the two central axes, respectively, to be folded and unfolded. As shown in fig. 2 to 4 and 8, the

1 includes a connecting

101 and two

102, the

102 are arranged coaxially and in one-to-one correspondence with the central axis, and the two

102 are arranged below the connecting

101 at intervals. The

1 is rotatably connected to the first connecting

81 and the second connecting

82 through two

102, respectively. The

101 is provided with a through-

103.

The specific structure of the rotating

1 is not limited in the present disclosure as long as it can be connected between the first connecting

81 and the second connecting

82 to cover the gap therebetween without affecting the rotation of the first connecting

81 and the second connecting

82. In one embodiment, as shown in fig. 2, the length dimension (in the length direction of the connecting plate) of the

1 is short, and a plurality of

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

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

102 may be provided with a pin to realize the rotating connection between the

102 and the corresponding connecting plate.

The two

102 are provided to facilitate the rotating connection with the corresponding connecting plates. When the connecting plate is rotating, the

1 can not move along with the connecting plate and is always kept between the first connecting

81 and the second connecting

82, so that gaps on the connecting plate can be covered, the deformation area of the

201 is supported through the connecting

101, and the deformation area of the

201 can be effectively supported. The

101 is provided with a through

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

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

102, and the support is achieved by the upper connecting

101, so that the weight of the

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

2. The

1 is arranged between two supporting

2, the two supporting

2 are respectively connected with the first connecting

81 and the second connecting

82, a rotating shaft groove is arranged between each supporting

2 and the corresponding connecting plate, and the

102 is arranged in the corresponding rotating shaft groove. Each supporting

2 is arranged between the corresponding connecting plate and the

1.

When the installation, the

102 of the

1 can be arranged in the rotating shaft groove, and then the

102 is limited in the rotating shaft groove by connecting the supporting

2 with the corresponding connecting plate, so that the rotating connection of the

102 and the corresponding connecting plate can be realized. And set up between connecting plate and pivot spare 1 and

2, can cover the clearance between connecting plate and the pivot spare 1 through supporting

2 to can carry out firm support to the deformation zone of

201.

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

81 and 82 is provided with a

83, and the bottom of each

2 is provided with an

203, and the

83 and the corresponding

203 form a shaft groove. Alternatively, the

102 of the

1 may be cylindrical, the

203 may be a semicircular structure, and the

83 may be a semicircular structure. When the connecting plate is installed, the

102 of the

1 can be placed in the rotating shaft

83, then the supporting

2 is covered on the corresponding

102, and the supporting

2 is connected with the corresponding connecting plate, so that the rotating connection between the

102 and the corresponding connecting plate is realized.

In other embodiments, the

102 of the

1 may be fixed to the corresponding connecting plate by an annular clip, and both ends of the

102 are inserted into the clip and are in clearance fit with the clip.

As shown in fig. 2, 5, 8 and 9, the

101 is provided with a

1011, and a

201 is provided on a side of the

2 facing away from the rotation shaft groove. The

201 is provided with a

2011, and when the first connecting

81 and the second connecting

82 are unfolded, the

1011 and the

2011 are in the same plane. Therefore, the deformation region of the

201 in the unfolded state can be effectively supported by the

1011 and the

2011, and the deformation region of the

201 is prevented from being depressed.

As shown in fig. 2 and 5, the supporting

2 is provided with a

202, the

202 extends along the width direction of the connecting plate, and the

103 communicate the

202 on the two supporting

2 to form the

110.

The

103 and the

202 form the

110 penetrating the

300 by providing the

202 on the

2. Moreover, the

110 is more straight by arranging the

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

202 is opened on the supporting

201 of the supporting

2.

It is understood that, in other embodiments, when the upper surface of the supporting

2 is lower than the

103 of the

1, the

202 is not provided on the supporting

2, and the electric wire or the flexible circuit board, etc. can pass through the supporting

300 only through the

103 of the

1. It is also possible to form the

110 by providing holes in the

2 that extend through the width of the connecting plate and by forming communicating holes in the two

2.

In one embodiment of the present disclosure, as shown in fig. 2 to 4, first supporting

1012 are connected to both sides of the first supporting

1011. As shown in fig. 2 and 5, a second supporting

2012 is arranged on one side of the supporting

201 close to the

1, the first supporting

1012 and the second supporting

2012 are coaxially arranged, and when the first connecting

81 and the second connecting

82 are folded, the first supporting

1012 and the second supporting

2012 are located in the same arc, so that the connection between the deformation region and the fitting region of the

201 is smoothly supported by the arc. Therefore, the

201 in the folded state can be effectively supported by the first supporting

1012 and the second supporting

2012, and the

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

1012 and the

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

1, the plurality of

1 are disposed along a length direction of the connecting plate, each

1 includes a connecting

101 and two

102, the two

102 are disposed below the connecting

101 at intervals, each

1 is rotatably connected to the first connecting

81 and the second connecting

82 through the two

102, and the connecting

101 on at least one

1 is provided with a

103 therethrough.

By arranging the plurality of separated

1 along the length direction of the connecting plate, on one hand, the length of a single

1 is shortened, and the

1 are convenient to process; on the other hand, when installing, the

1 with the

103 can be installed or adjusted to a suitable position as required to facilitate wire passing, or a suitable number of

1 with the

103 can be selected as required to be installed or adjusted to a suitable position. Namely, the

1 with the

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

1 is enlarged.

In another aspect of the present disclosure, as shown in fig. 6 and 7, there is also provided a

100 for a flexible screen. The

100 for a flexible screen includes the above-described

300.

The

100 for a flexible screen further includes a

10, a

20, and a

30. The

10 and the

20 are for jointly carrying the

201. The

10 has a

141, the

20 has a

221, and the

110 communicates the

141 and the

221. The connecting

80 is disposed between the

10 and the

20, the first connecting

81 is slidably connected to the

10, and the second connecting

82 is slidably connected to the

20. The

30 is connected between the

81 and the

82 so that the

10 and the

20 can slide synchronously with respect to the corresponding connection plates when rotating during the unfolding and folding of the

100 for a flexible screen.

When the

201 is unfolded or folded, the

10 and the

20 surround and bring the

30 into motion, so as to drive the

10 and the

20 to synchronously slide relative to the

300. Specifically, when the

201 is unfolded, the

10 and the

20 are both away from each other with respect to the

300, so that the

201 can be flattened, and the

201 is prevented from being pressed to be arched to form wrinkles; when the

201 is folded, the

10 and the

20 are driven by the

30 to approach each other with respect to the supporting

300, so that the

201 can be prevented from being pulled. The

110 communicates the first

141 with the second

221, so that a wire or a flexible circuit board and the like can enter the second

221 from the first

141, and the two accommodating cavities are electrically connected.

As shown in fig. 16 and 17, the

10 is provided with a plurality of

13 at intervals on one side close to the connecting

80, and the

20 is provided with a plurality of

21 at intervals on one side close to the connecting

80. As shown in fig. 2 and 5, a plurality of first sliding

204 and a plurality of second sliding

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

204, and the second gear shaping 21 is slidably disposed on the corresponding second sliding

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

201.

Alternatively, in an embodiment of the present disclosure, the

30 is connected to the ends of the first connecting

81 and the second connecting

82, the rotation shaft assembly further includes two supporting

2 extending along the length direction of the connecting plates, the two supporting

2 are respectively connected with the first connecting

81 and the second connecting

82, the first sliding

204 is disposed on the upper surface of one of the supporting

2, and the second sliding

205 is disposed on the upper surface of the other supporting

2.

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

1.

In one embodiment of the present disclosure, as shown in fig. 16, the

10 includes a

14 and a first flexible

15 which are mutually covered, and the

14 is provided with a first

141. The

20 includes a

22 and a second flexible

23 which are mutually covered, and the

22 is provided with a second

221. The first gear shaping 13 is arranged on the first flexible

15, and the second gear shaping 21 is arranged on the second flexible

23. The first connecting

81 is slidably connected to the

14, and the second connecting

82 is slidably connected to the

22. The

201 supporting plate is arranged to support the attaching area of the

201 conveniently.

As shown in fig. 16, the first flexible supporting plate includes a first

151 and a

152 for supporting the

201, the first gear shaping 13 is disposed on the first

151, an upper surface of the first

151 is lower than an upper surface of the

152, the second flexible supporting plate includes a second

231 and a

232 for supporting the

201, the second gear shaping 21 is disposed on the second

231, and an upper surface of the second

231 is lower than an upper surface of the

232.

The

100 for a flexible screen further includes a flexible supporting

90 extending along the length direction of the connecting plate, two sides of the flexible supporting

90 are respectively attached to and connected to the first and

151 and 231, and when the

100 for a flexible screen is unfolded, as shown in fig. 16 and 17, upper surfaces of the flexible supporting

90, the

152 and the

232 are located on the same plane, so that a deformation region of the

201 can be completely and stably supported when the folding device is unfolded.

Alternatively, the flexible supporting

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

30 to which the present disclosure is applicable is described below. The

30 includes a hinge mechanism, a synchronous transmission mechanism, and a damping mechanism. The

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

81 and the second connecting

82.

The

10 and the

20 realize relative rotation through a hinge mechanism arranged between the first bearing part and the second bearing part, so that the

201 is driven to rotate, and the

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

100 for the flexible screen, the

10 and the

20 can surround and drive the hinge mechanism to rotate, and meanwhile, the synchronous transmission mechanism drives the

10 and the

20 to synchronously slide relative to the hinge mechanism, so that the

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

100 for the flexible screen is folded.

Through the technical scheme, when the

201 is unfolded or folded, the

10 and the

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

10 and the

20 to synchronously slide relative to the hinge mechanism. Specifically, when the

201 is unfolded, under the driving of the synchronous transmission mechanism, the

10 and the

20 are both far away from each other relative to the hinge mechanism, so that the

201 can be flattened, and the

201 is prevented from being squeezed to be arched to form folds; when the

201 is folded, the

10 and the

20 are close to each other relative to the hinge mechanism under the driving of the synchronous transmission mechanism, so that the

201 can be prevented from being pulled. Therefore, in the process of unfolding and folding, the

100 for the flexible screen in the present disclosure can always keep the

201 in a smooth state through the synchronous sliding of the

10 and the

20, so as to avoid the extrusion or pulling of the

201, thereby effectively reducing the possible damage to the

201, and improving the service life of the

201.

In one embodiment of the present disclosure, as shown in fig. 20 to 26, the hinge mechanism includes a first rotating

41, a second rotating

42, a

43, a

44, and a

45, the first rotating

41 is slidably connected to the

10 and is hinged to the

45 through the

43, and the second rotating

42 is slidably connected to the

20 and is hinged to the

45 through the

44.

When the

100 for a flexible screen is unfolded and folded, the

10 drives the first rotating

41 to rotate around the

43 relative to the

45, and simultaneously, the

10 slides synchronously relative to the first rotating

41. Similarly, while the

20 drives the second

42 to rotate around the

44 relative to the

45, the

20 slides synchronously relative to the second

42. Therefore, the

201 can be always kept in a smooth state by the sliding of the bearing piece relative to the rotating piece, and the

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

45, when expandeing with folding, the

10 that holds and the second holds

20 and drives the both sides of

201 and slide jointly respectively, can accelerate the speed of the exhibition of

201 flat on the one hand, and on the other hand can make the stress of

201 both sides even, has reduced the damage that

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

41 and the second rotating

42 can be achieved, for example, only one rotating shaft may be provided, and both the first rotating

41 and the second rotating

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

60 and a

70, the

60 is connected with the first rotating

41 and is drivingly connected between the

45 and the

10, the

70 is connected with the second rotating

42 and is drivingly connected between the

45 and the

20, such that when the flexible screen is folded or unfolded with the

100, the

60 converts a rotation angle of the first rotating

41 relative to the

45 into a movement displacement to drive the

10 to synchronously slide relative to the

45, and the

70 converts a rotation angle of the second rotating

42 relative to the

45 into a movement displacement to drive the

20 to synchronously slide relative to the

45.

When the

100 for the flexible screen is unfolded and folded, the first rotating

41 and the second rotating

42 respectively rotate around the

45 and drive the

60 and the

70 to start transmission work, so that the

60 drives the

10 to slide relative to the first rotating

41, and the

70 drives the

20 to slide relative to the second rotating

42, thereby realizing synchronous sliding of the

10 and the

20 while the first rotating

41 and the second rotating

42 rotate around the

45.

Further, as shown in fig. 20 to 24, the synchronous transmission mechanism includes a

60 and a

70 respectively connected to two sides of the

45 in a transmission manner, the first rotating

41 is provided with a pair of first clamping

411 arranged oppositely, the second rotating

42 is provided with a pair of second clamping

423 arranged oppositely, the

60 is connected between the pair of first clamping

411, the

70 is connected between the pair of second clamping

423, the

45 is hinged to an end of the

411 through a

43, and the

45 is hinged to an end of the

423 through a

44.

By configuring the first rotating

41 and the second rotating

42 in the shape of clip arms, and disposing the

60 and the

70 between the clip arms. With such an arrangement, the first rotating

41 and the second rotating

42 can be conveniently connected with the

60 and the

70, so that the first rotating

41 and the second rotating

42 can respectively drive the

60 and the

70 to perform transmission work when rotating around the

45; and the hinge mechanism and the synchronous transmission mechanism have compact integral structure, especially, the thickness of the

100 for the flexible screen is not additionally increased, the volume and the thickness of the

100 for the flexible screen are reduced as much as possible, and the requirement of lightening and thinning the

200 is conveniently met when the

100 for the flexible screen is applied to the

200.

Further, as shown in fig. 20 to 23, the outer circumference of the

45 is provided with a plurality of teeth, the

60 includes a

61 and a gear set 62, the

61 is fixed to the

10, two sides of the gear set 62 are respectively engaged with the

45 and the

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

41, the first rotating

41 rotates relative to the

45 to drive the gears in the gear set 62 to rotate around the

45, and the

61 is further driven to slide by the transmission of the gear set 62 to drive the

10 to synchronously slide relative to the

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

100 for the flexible screen is unfolded and folded, the first rotating

41 and the second rotating

42 respectively rotate around the

43 and the

44, and drive the gears in the

60 to be in meshing transmission with the teeth on the periphery of the

45, and then drive the

61 to slide through the meshing transmission between the gears in the gear set 62, so as to drive the

10 fixedly connected with the

61 to synchronously slide relative to the

45. Through set up a plurality of teeth in the periphery of

45, utilize the pivot to be fixed in the gear that rotates on the piece and the tooth meshing on the

45 to make the piece that rotates can drive the gear rotation in the

62, then through the cooperation of gear and

61, thereby realized converting the turned angle of rotation piece into the removal displacement that drives the carrier and remove.

As shown in fig. 20 and 21, in order to increase the sliding displacement of the

61, at least one of the gears in the

62 is a duplicate gear. The duplicate gear comprises a small gear and a large gear, the small gear is meshed with the

45 or a gear close to one side of the

45, and the large gear is meshed with the

61 or a gear close to one side of the

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

45, so that the maximum angle at which the gear wheel meshing with the

45 can rotate is fixed. If the gear transmission is performed through a common gear, the

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

45 travels on the

45 when rotating. Therefore, if the sliding distance of the

61 needs to be increased, the thickness of the

100 for a flexible screen can be increased only by increasing the outer diameter of the

45, which cannot meet the requirement of being light and thin when applied to the

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

61 or the gear close to one side of the

61, so that the sliding displacement of the

61 can be increased. That is, by providing the dual gear, the sliding displacement of the

61 can be increased even when the rotating member rotates by the same angle without changing the periphery of the

45, so as to satisfy the requirement of the carrier for extending the

201, and at the same time, the requirement of the carrier for being light and thin when applied to the

200 can be satisfied.

As shown in fig. 20 to 23, in order to effectively increase the slidable displacement of the

61, the

62 includes a

621, a

622, and a

623. The small gear of the

621 is meshed with the

45, the large gear of the

621 is meshed with the small gear of the

622, the large gear of the

622 is meshed with the

623, and the

623 is in meshed transmission with the

61.

By providing the

621 and the

622, the linear displacement of the outer periphery of the gears can be amplified in two stages, and the sliding displacement of the

61 is further enlarged. Therefore, while the requirement of the carrier for extending the

201 is satisfied, the design of the

45 and the

60 can be minimized, and the outer diameters of the

45 and the gear in the gear set 62 are reduced, so that the whole

30 is thinner and lighter, and the thickness of the

100 for the flexible screen is not increased additionally.

As shown in fig. 24, the first rotating

41 is provided with a pair of first clamping

411 arranged oppositely, the

45 and the gear set 62 are both arranged between the pair of first clamping

411, the

45 is arranged at the end of the pair of first clamping

411, the

43 is arranged through the

45 and the pair of first clamping

411, and the rotating shaft of the gear set 62 is arranged through the pair of first clamping

411.

By arranging the

60 between the first clamping

411 and fixing the rotating shaft in the gear set 62 through the first clamping

411, on one hand, when the first rotating

41 rotates, the rotating shaft of the gear fixed thereon only drives the gear to mesh around the

45 for transmission, and no additional mechanism is needed, so that the

60 can be conveniently driven to work, thereby simplifying the structural design of the whole

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

411 through the rotating shaft, when the

60 rotates around the

45 along with the rotating member, the transmission of the gear sets 62 inside the

60 is not affected at all, and the stability of the transmission is ensured.

Further, the thickness of the

45 along the length direction of the

43 is greater than the thickness of each gear of the gear set 62. So set up, hinge

45 can strut

411 for interval between the

411 is greater than the thickness of every gear, thereby can not produce the friction with the

411 of both sides when the gear rotates, and

411 can not influence the rotation of gear promptly, thereby makes the transmission of

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

10 and the

20 for carrying the

201 is a front surface 11, and the other side opposite to the front surface 11 is a back surface 12, and when the

100 for flexible screen is in a folded state, the two back surfaces 12 of the

10 and the

20 are attached to each other. In order to enable the

61 to slide in the correct direction when the

100 for a flexible screen is folded and unfolded, the gear set 62 includes an odd number of gears when the

61 is closer to the rear surface 12 with respect to the gear set 62, i.e., the

61 is located below the gears shown in fig. 17-20; or

When the

61 is closer to the front face 11 than the gear set 62, i.e., the

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

62 having an odd number of gears will be described as an example. When the

100 for a flexible screen is converted from the unfolded state to the folded state in the drawing, the first rotating

41 on the right side rotates clockwise to drive the gear engaged with the

45 to rotate clockwise, and since the gear set 62 has an odd number of gears, the gear associated with the

61 also rotates clockwise, and therefore, the

61 located below the gear is driven to slide in a direction approaching the

45. Similarly, the second

42 rotates counterclockwise at this time, and also drives the

61 located below the gear to slide toward the

45. Therefore, when the

100 for a flexible screen is folded, the

10 and the

20 are driven by the

61 to approach the

45, so as to adapt to the deformation of the corresponding

201. On the contrary, when the

100 for a flexible screen needs to be unfolded, the first rotating

41 rotates counterclockwise, the second rotating

42 rotates clockwise, and the

10 and the

20 are driven by the

61 to move away from the

45, so as to flatten the

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

61 from interfering with the synchronous transmission mechanism when moving, the

61 is slidably disposed at the bottom of the first rotating

41, as shown in fig. 20 and 24, a stopping

412 is disposed at one end of the bottom of the first rotating

41 close to the

45, the stopping

412 is disposed to protrude downward relative to the bottom surface of the first rotating

41, and the stopping

412 is used for limiting the minimum distance between the end of the

61 and the

45. Therefore, when the

100 for the flexible screen is folded, the maximum displacement of the

61 when sliding towards the

45 can be limited, and the interference which is possibly caused to the meshing transmission of the

45 and the gear set 62 when the

61 slides to the vicinity of the

45 can be avoided.

In one embodiment of the present disclosure, as shown in fig. 20-23, the

70 is identical in structure to the

60 and is symmetrically arranged with respect to the

45. Therefore, the structural design can be simplified, the

10 and the

20 can slide synchronously, and the

201 is prevented from being damaged due to uneven stress. It is understood that in other embodiments, the specific structure of the

70 may be different from the

60. The

70 is similar to the

60, and simple modifications are made to the structure of the

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

10 and the

20, the first rotating

41 is provided with a plurality of

413 near the outer peripheral ring of the second rotating

42, the second rotating

42 is provided with a plurality of

421 meshed with the

413 near the outer peripheral ring of the first rotating

41, and the first rotating

41 and the second rotating

42 are in mesh transmission. And the transmission ratio of the first rotating

41 and the second rotating

42 is 1.

The

100 for a flexible screen can rotate more smoothly when being folded or unfolded by the meshing transmission of the first rotating

41 and the second rotating

42. Moreover, the synchronous rotation of the first rotating

41 and the second rotating

42 can be realized, and the same angular velocity can be maintained at any time, so that the

60 and the

70 can always have the same rotating speed, and therefore, the

10 and the

20 can slide at the same speed, the bending part of the

201 is uniformly stressed, and the damage to the

201 is reduced.

In order to maintain the

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

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

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

41 and a second damping mechanism acting on the second rotating

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

10 and the

20 need only be limited, as the other is held by a user or placed on a table top, so that the

100 for a flexible screen can be maintained at a desired deployment angle.

The first damping mechanism comprises a

51 and a first

53, a

431 and a first abutting

46 are respectively arranged at two ends of a

43, the

43 slidably penetrates through the

51, a

45 and a first

41, the

45 and the first

41 are positioned between the

51 and the

431, and two ends of the first

53 abut against the first abutting

46 and the

51 and are used for providing elastic force for enabling the

51, the

45, the first

41 and the

431 to be tightly attached to each other; and/or

The second damping mechanism includes a

52 and a second

54, a

441 and a second abutting

47 are respectively disposed at two ends of the

44, the

44 slidably penetrates through the

52, the

45 and the second

42 are located between the

52 and the

441, and two ends of the second

54 abut against the second abutting

47 and the

52, and are used for providing an elastic force for enabling the

52, the

45, the second

42 and the

441 to be tightly attached to each other.

The

43 is disposed on the first connecting

81, and the

44 is disposed on the second connecting

82. The

30 rotates around the

43 and the

44, respectively. The

43 and the

44 correspond to the

102 of the

1 in the

300, and are coaxially disposed. The

43 and the corresponding

102 of the

1 together form a central rotating shaft of one of the

100, and the

44 and the corresponding

102 of the

1 together form another central rotating shaft of the

100.

The

100 for a flexible panel having both a first damping mechanism and a second damping mechanism will be described as an example. When the

100 for the flexible screen is folded and unfolded, the first

41 and the second

42 rotate relative to the

45, and due to the abutting action of the elastic piece on the friction piece, the

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

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

10 and the

20 is hindered, and the

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

43 includes a

432 having a kidney-shaped cross section, the kidney-shaped cross section includes oppositely disposed

433, the

433 are all circular, the

431 is disposed at an end portion of the

432, the

432 is slidably disposed through the

51, the first rotating

41 and the

45 in sequence, the

51 and the

45 are respectively provided with a kidney-shaped

434 engaged with the

432, and the first rotating

41 is provided with a

415 engaged with the

432.

Because the

415 is formed in the first rotating

41, after the first rotating

41 is matched with the

432 with the kidney-shaped cross section, the first rotating

41 can still rotate around the

43, and the rotation of the first rotating

41 around the

43 is not affected. Moreover, since the

51 and the

45 are provided with the waist-shaped

434, and the waist-shaped

434 are sleeved on the

432 with the waist-shaped cross section, the

51 and the

45 cannot rotate around the

43, so that the

43 cannot rotate along with the first rotating

41 when the first rotating

41 rotates, and the

51 cannot rotate around the

43 along with the first rotating

41 under the friction of the first rotating

41. Therefore, when the first rotating

41 rotates around the

43, relative movement is generated between the

51 and the first rotating

41, so as to generate a friction force for resisting the rotation of the first rotating

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

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

41 may be formed in any suitable structure and shape according to design requirements, and in one embodiment, the first rotating

41 is provided with a pair of first clamping

411 which are oppositely arranged. The pair of

411 can have elasticity when approaching or departing from each other, the

45 is clamped between the pair of

411, the

43 sequentially passes through one of the

411, the

45, the other

411, the

51, the first

53 and the

46, the

431 and the

51 are respectively abutted against two sides of the pair of

411, and the first

53 is used for providing elastic force for enabling the

51, the pair of

411, the

45 and the

431 to be tightly attached to each other.

Through arranging the first clamping

411 to clamp the

45 between the first clamping

411, when the first rotating

41 rotates around the

43, friction force can be generated between the first rotating member and both sides of the

45, and the surface capable of generating friction force is increased. Moreover, the

411 has certain elasticity, and the

431 and the

51 which are positioned at two sides of the

411 extrude the

411 and the

51, so that the

411 and the

45 are attached more tightly, the pressure between the

411 and the

45 is increased, the friction force between the

411 and the

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

411, not only the surface generating friction force can be increased, but also the friction force between the

45 and the first rotating

41 can be increased, and the damping resisting the rotation of the rotating member can be effectively increased, so that the

100 for a flexible screen can be more stably maintained at a required unfolding angle.

It can be understood that the

411 has elasticity as long as it can facilitate clamping the

45 placed therein, and therefore, the

411 may be configured to be long, and the shape thereof is realized by the elasticity. Alternatively, the

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

41 is configured in a U-shaped structure. The pair of first clamping

411 are two opposite side plates of a U-shaped structure, and the

43 penetrates through the end portions of the two side plates. Set up

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

45 through two curb plates of U type structure tightly, thereby the increase hinders the damping that first rotating

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

46 may be a nut, a thread matching with the nut is disposed on the

43, and two ends of the first

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

51 and the

431 can effectively press the

45 and the first rotating

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

41 and the second rotating

42 from over-rotating, in an embodiment of the present disclosure, as shown in fig. 20 and 24, a side of the first rotating

41 close to the second rotating

42 is provided with a first limiting

414, a side of the second rotating

42 close to the first rotating

41 is provided with a second limiting wall 422, and when the

100 for a flexible screen is unfolded to 180 °, the first limiting

414 abuts against the second limiting wall 422, so that the first rotating

41 and the second rotating

42 can be prevented from further rotating, the maximum rotating angle of the

10 and the

20 is further limited, and the

201 is prevented from being damaged by over-rotating.

In order to facilitate the connection of the

30 to the

10 and the

20, the

100 for a flexible screen further comprises a

80 connected between the

10 and the

20. The connecting

80 includes a first connecting

81 and a second connecting

82, and the first connecting

81 and the second connecting

82 extend in the direction of the rotational axis of the folding device when folded. The first rotating

41 is fixed at an end of the first connecting

81, the first connecting

81 is slidably connected to the

10, the second rotating

42 is fixed at an end of the second connecting

82, the second connecting

82 is slidably connected to the

20, the first rotating

41 is slidably connected to the

10 through the first connecting

81, the second rotating

42 is slidably connected to the

20 through the second connecting

82, and the first rotating

41 and the second rotating

42 are hinged to each other through a hinge mechanism.

In order to enable the

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

30 is two, and the rotation connection mechanisms are respectively provided at both ends of the

80. This enables the folding device to fold the

201 simultaneously along both sides of the axis of rotation. In addition, the

80 and the

10 and the

20 can form the same plane when the folding device is unfolded to support the middle bent portion of the

201.

Specifically, the

80 is generally in an i-shaped structure as a whole, the

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

200 including a

201 and the

100 for a flexible screen.

This

200 is when expanding or folding,

10 and

20 surround and drive the hinge mechanism and rotate, when the hinge mechanism rotates, drive synchronous drive mechanism work, thereby make

10 of synchronous drive mechanism drive and

20 drive

201 and slide for the hinge mechanism is synchronous, in order to adapt to the change of

10 and

20 junction shape, thereby can make

201 remain in the level and smooth state all the time, the extrusion or the pull to

201 have been avoided, thereby can effectively reduce the damage that probably produces

201 in the process of expanding and folding, the life of

201 has been improved.