CN111981030A

CN111981030A - Rotating shaft and foldable display screen

Info

Publication number: CN111981030A
Application number: CN202010870813.1A
Authority: CN
Inventors: 张嘉桓
Original assignee: Hefei Visionox Technology Co Ltd
Current assignee: Hefei Visionox Technology Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-24
Anticipated expiration: 2040-08-26
Also published as: CN111981030B

Abstract

The invention provides a rotating shaft and a folding display screen, and solves the problem that a display surface is not flat when a 360-degree folding display screen is unfolded in the prior art. A spindle, comprising: the first rod comprises a first limiting piece, and the first limiting piece is positioned on the side wall of the first rod; the first rod has a first cross section passing through an axis of the first rod, and the first cross section passes through the first limiting piece; the second rod is rotatably connected with the first rod and comprises a second limiting piece matched with the first limiting piece, and the second limiting piece is positioned on the side wall of the second rod; the second rod has a second cross section passing through an axis of the second rod, and the second cross section passes through the second limiting member. When the first rod and the second rod rotate relatively to the first limiting part and the second limiting part which are mutually interlocked, the first cross section and the second cross section are coplanar.

Description

Rotating shaft and foldable display screen

Technical Field

The invention relates to the technical field of display, in particular to a rotating shaft for a folding display screen and the folding display screen.

Background

The folding display screen with the bending angle of 360 degrees solves the problems that the cost is increased due to the fact that the auxiliary screen needs to be added when the display screen is folded inwards and the display screen is easy to damage when the display screen is folded outwards, and is therefore worthy of industry. Generally, however, it is difficult to maintain all axes in the same horizontal position when the 360-degree foldable display screen is unfolded, which results in an uneven display surface.

Disclosure of Invention

In view of this, embodiments of the present invention provide a rotating shaft and a foldable display screen, so as to solve the problem in the prior art that when a 360-degree foldable display screen is unfolded, a display surface is not flat.

A first aspect of the present invention provides a spindle comprising: the first rod comprises a first limiting piece, and the first limiting piece is positioned on the side wall of the first rod; the first rod has a first cross section passing through an axis of the first rod, and the first cross section passes through the first limiting piece; the second rod is rotatably connected with the first rod and comprises a second limiting piece matched with the first limiting piece, and the second limiting piece is positioned on the side wall of the second rod; the second rod has a second cross section passing through the axis of the second rod, and the second cross section passes through the second limiting piece; when the first rod and the second rod rotate relatively to the first limiting part and the second limiting part which are mutually interlocked, the first cross section and the second cross section are coplanar.

In one embodiment, the first rod comprises a first sleeve sleeved on the outer wall of the first rod, and a first limiting member is arranged on the outer wall of the first sleeve; the second pole includes the second external member of suit on the outer wall of second pole, is provided with the second locating part on the outer wall of second external member.

In one embodiment, the first limiting member includes a first groove, and a predetermined section of the first groove is provided with at least two first protrusions spaced from each other; the second limiting piece comprises a first convex column in sliding fit with the first groove; when the first convex column slides along the first groove until the first convex column is embedded between the at least two first bulges, the first cross section and the second cross section are coplanar.

In one embodiment, the predetermined section of the first groove comprises a middle section of the first groove.

In one embodiment, the first groove comprises two edge lines perpendicular to the axis of the first rod; the at least two first bulges comprise four first bulges, every two first bulges are positioned on the same edge line, and the connecting line of the four first bulges is rectangular.

In one embodiment, the second kit further comprises a second groove perpendicular to the axis of the second rod, a predetermined section of the second groove being provided with at least two second projections spaced from each other; the rotating shaft further comprises a third rod which is rotatably connected with the second rod, the third rod comprises a third sleeve which is sleeved on the outer wall of the third rod, a second convex column is arranged on the outer wall of the third sleeve, and the second convex column is in sliding fit with the second groove; the third rod has a third cross section passing through the axis of the third rod, and the third cross section passes through the second convex column; when the second convex column slides along the second groove until the second convex column is embedded between the at least two second protrusions, the second cross section and the third cross section are coplanar.

In one embodiment, an orthographic projection of the first projection in a direction perpendicular to the axis of the second stem falls between the at least two second projections.

In one embodiment, the first kit further comprises a third groove, a predetermined section of the third groove being provided with at least two third protrusions; the rotating shaft further comprises a fourth rod which is rotatably connected with the first rod, the fourth rod comprises a fourth sleeve which is sleeved on the outer wall of the fourth rod, a third convex column is arranged on the outer wall of the fourth sleeve, and the third convex column is in sliding fit with the third groove; the fourth rod is provided with a fourth section passing through the axis of the fourth rod, and the fourth section passes through the third convex column; when the third convex column slides along the third groove until the third convex column is embedded between the at least two third protrusions, the first cross section and the fourth cross section are coplanar.

In one embodiment, the first groove is translated a distance in a direction parallel to the axis of the first rod and the third groove is symmetrical on the first sleeve about the axis of the first rod.

A second aspect of the present invention provides a foldable display screen, comprising: the flexible display screen and the rotating mechanism comprise a first shell and a second shell which are connected through a rotating shaft provided by any one of the embodiments, the first shell comprises a first surface, the second shell comprises a second surface, the first surface and the second surface form a bearing surface, and the flexible display screen is positioned on the bearing surface.

According to the rotating shaft provided by the invention, the first limiting piece is arranged on the first rod, the second limiting piece is arranged on the second rod, and the first cross section of the first rod, which penetrates through the first limiting piece, and the second cross section of the second rod, which penetrates through the second limiting piece, are limited on the same plane by locking the first limiting piece and the second limiting piece. Therefore, when the folding display screen is formed by the rotating shaft, the display surface of the folding display screen in a flat state can be ensured to be flat.

Drawings

Fig. 1 is a schematic structural diagram of a rotating shaft according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a first kit according to an embodiment of the present invention.

Fig. 3 is a schematic view of a second kit according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a third kit according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a rotating shaft according to another embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a third kit according to another embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a foldable display screen according to an embodiment of the present invention.

Detailed Description

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

Fig. 1 is a schematic structural diagram of a rotating shaft according to a first embodiment of the present invention. Fig. 2 is a schematic structural diagram of a first kit according to an embodiment of the present invention. Fig. 3 is a schematic view of a second kit according to an embodiment of the invention. Referring to fig. 1, the rotary shaft 10 includes a first lever 11 and a second lever 12 rotatably coupled. The first rod 11 includes a first limiting member 111, and the first limiting member 111 is located on a sidewall of the first rod 11; the first rod 11 has a first section S passing through the axis of the first rod 11₁First section S₁Passes through the first stopper 111. The second rod 12 includes a second limiting member 121 engaged with the first limiting member 111, and the second limiting member 121 is located on a sidewall of the second rod 12; the second rod 12 has a second section S passing through the axis of the second rod 12₂Second section S₂Passes through the second stopper 121. When the first rod 11 and the second rod 12 rotate relatively to the first limiting member 111 and the second limiting member 111When the two limiting members 121 are interlocked, the first cross section and the second cross section are coplanar.

In the present embodiment, as shown in fig. 1, the first lever 11 and the second lever 12 are rotationally connected through a gear set 100. The first rod 11 and the second rod 12 are respectively provided with a first limiting member 111 and a second limiting member 121 which are matched with each other, the first rod 11 is provided with a first section S passing through the axis thereof and passing through the first limiting member 111₁The second rod 12 has a second section S passing through its axis and passing through the second limiting member 121₂. When the first rod 11 and the second rod 12 rotate to the first section S₁And a second cross section S₂When the first and second limiting

members

111 and 121 are coplanar, the first limiting member 111 and the second limiting member 121 are locked with each other, so that the first section S is formed₁And a second cross section S₂And limited in the same plane, so that the flexible display screen subsequently placed on the rotating shaft 10 is in a flat state.

In one embodiment, the form of locking the first limiting member 111 and the second limiting member 121 with each other includes embedding the first limiting member 111 into the second limiting member 121.

According to the rotating shaft provided by the embodiment, the first limiting member 111 is disposed on the first rod 11, the second limiting member 121 is disposed on the second rod 12, and the first section S is locked by the first limiting member 111 and the second limiting member 121₁And a second cross section S₂Are confined to the same plane. Therefore, when the folding display screen is formed by the rotating shaft, the display surface of the folding display screen in a flat state can be ensured to be flat.

In one embodiment, referring to fig. 1, 2 and 3, the first rod 11 includes a first sleeve 110 sleeved on an outer wall of the first rod 11, and a first stopper 111 is disposed on the outer wall of the first sleeve 110. The second rod 12 includes a second sleeve 120 sleeved on an outer wall of the second rod 12, and a second stopper 121 is disposed on the outer wall of the second sleeve 120.

The first and

second sleeves

110 and 120 are plastic sleeves formed on the outer walls of the respective rods through an insert injection molding process. In this case, the structure of the existing spindle is not changed, but the first sleeve 110 and the second sleeve 120 are separately prepared, the first sleeve 110 is assembled on the first rod 11, and the second sleeve 120 is assembled on the second rod 12, so as to form the spindle 10 having the 180-degree limiting structure shown in fig. 1. Thus, the preparation process can be simplified, and the production cost can be reduced.

In one embodiment, referring to fig. 1, 2 and 3, the first limiting member 111 includes a first groove 112, and a predetermined section of the first groove 112 is provided with at least two first protrusions 113 spaced apart from each other. The second position-limiting member 121 includes a first protrusion 122 slidably engaged with the first groove 112. When the first protrusion 122 slides along the first groove 112 until the first protrusion 122 is embedded between the at least two first protrusions 113, the first cross section S₁And a second cross section S₂Are coplanar.

For example, as shown in fig. 2, the first limiting member 111 includes a first groove 112, the first groove 112 includes four first protrusions 113, a connecting line of the four first protrusions 113 is rectangular, and the first cross section S is₁Through a central axis of the rectangle. As shown in fig. 3, the second position-limiting member 121 includes a first protrusion 122, and the first protrusion 122 has a second section S₂And (4) symmetry. In this case, when the first protrusion 122 slides along the first groove 112 until the first protrusion 122 is embedded between the four first protrusions 113, the first section S₁And a second cross section S₂Are coplanar.

The first protrusion 113 on the first groove 112 refers to a structure protruding from the inner surface of the first groove 112, and the inner surface of the first groove 112 mentioned here includes a groove bottom and a groove wall. The first protrusion 113 may have any shape such as a cylinder, a hemisphere, a triangle, etc.

The first protrusion 113 has a telescopic function, for example, the first protrusion 113 is made of an elastic material, or a mechanical structure may be used to realize the protrusion or recess of the first protrusion 113 with respect to the surface of the first groove 112.

According to the rotating shaft provided by the embodiment, at least two first protrusions 113 define a locking area, and when the first protrusion 122 slides into the locking area during the rotation of the first rod 11 and the second rod 12, the first protrusion 122 is engaged with the locking area, so as to make the first section S₁And a second cross section S₂Are defined in the same plane.

In one embodiment, the predetermined section comprises a middle section, i.e. at least two first protrusions 113 are arranged in the middle section of the first groove 112. Since the first and

second sticks

11 and 12 can be folded in half in opposite directions, for example, as shown in FIG. 1, the first and

second sticks

11 and 12 are folded in half upward, or the first and

second sticks

11 and 12 are folded in half downward. When the at least two first protrusions 113 are disposed in the middle section of the first groove 112, the maximum bending angles of the first rod 11 and the second rod 12 folded in two directions are equal, which is beneficial to improving the stability of the rotating shaft 10.

In one embodiment, referring to fig. 2, the first groove 112 includes two edge lines perpendicular to the axis of the first rod 11, the at least two first protrusions 113 include four first protrusions 113, each two first protrusions 113 are located on the same edge line, and the connecting line of the four first protrusions is rectangular. In this case, the engagement structure of the locking region defined by the four first protrusions and the first protrusion 122 has better stability.

Normally, as shown in fig. 1, the rotating shaft 10 comprises more than two rods, in which case the second rod 12 is further provided with a third rod 13 on the side away from the first rod 11. Specifically, referring to fig. 1 and 3, the second kit 120 further includes a second groove 123 perpendicular to the axis of the second rod 12, and a predetermined section of the second groove 123 is provided with at least two second protrusions 124 spaced apart from each other. The shaft 10 further includes a third rod 13 rotatably connected to the second rod 12, and the third rod 13 includes a third fitting 130 fitted around an outer wall of the third rod 13. Fig. 4 is a schematic structural diagram of a third kit according to an embodiment of the present invention. As can be seen from fig. 1, 3 and 4, the outer wall of the third sleeve 130 is provided with a second protrusion 131, and the second protrusion 131 is slidably engaged with the second groove 123. The third rod 13 has a third section S passing through the axis of the third rod 13₃Third section S₃Through the second boss 131. When the second protrusion 131 slides along the second groove 123 until the second protrusion 131 is embedded between the at least two second protrusions 124, the second cross section S₂And a third section S₃Are coplanar.

It should be understood that, as shown in fig. 1, a plurality of intermediate rods may be additionally disposed between the second rod 12 and the third rod 13, and each intermediate rod is sleeved with the second sleeve member 120 on the outer wall thereof, according to the actual requirement.

In one embodiment, as shown in fig. 3, an orthographic projection of first post 122 in a direction perpendicular to the axis of second rod 12 falls between at least two second protrusions 124. In this case, as shown in fig. 1, the first kit 110, the second kit 120, and the third kit 130 are sequentially linearly arranged along a direction perpendicular to the axis of the rotating shaft 10, so as to ensure uniform stress on the rotating shaft 10, which is beneficial to improving the stability of the rotating shaft 10.

Fig. 5 is a schematic structural diagram of a rotating shaft according to another embodiment of the present invention. Fig. 6 is a schematic structural diagram of a fourth kit according to an embodiment of the present invention. As can be seen in conjunction with fig. 5 and 6, the rotating shaft 20 only differs from the rotating shaft 10 shown in fig. 1 in that, in the rotating shaft 20, the first sleeve 510 further includes a third groove 514, and a predetermined section of the third groove 514 is provided with at least two third protrusions 515. The shaft 20 further includes a fourth rod 54 rotatably coupled to the first rod 51, and the fourth rod 54 includes a fourth fitting 540 fitted over an outer wall of the fourth rod 54. The fourth kit 540 has the same structure as the second kit 520, that is, the outer wall of the fourth kit 540 is provided with a third convex pillar 541, and the third convex pillar 541 is in sliding fit with the third concave groove 514. The fourth rod 54 has a fourth section S passing through the axis of the fourth rod 54₄Fourth section S₄Passes through the third post 541. When the third protrusion 541 slides along the third groove 514 until the third protrusion 541 is embedded between at least two third protrusions 515, the first cross section S₁And a fourth cross section S₄Are coplanar.

Specifically, the rotation shaft 20 includes a second rod 52, a first rod 51, and a fourth rod 53 rotatably connected in this order. The first rod 51 includes a first sleeve 510 fitted over the outer wall of the first rod 51, the second rod 52 includes a second sleeve 520 fitted over the outer wall of the second rod 52, and the fourth rod 54 includes a fourth sleeve 540 fitted over the outer wall of the fourth rod 54. A first groove 512 and a third groove 514 are provided on an outer wall of the first sleeve 510 to be perpendicular to an axis of the first rod 51, a predetermined section of the first groove 512 is provided with at least two first protrusions 513 spaced apart from each other, and a predetermined section of the third groove 514 is provided with at least two first protrusions 513 spaced apart from each otherAt least two third projections 515 spaced apart. The second sleeve 520 and the fourth sleeve 540 have the same structure, the outer wall of the second sleeve 520 is provided with a first convex column 521 in sliding fit with the first groove 512, and the outer wall of the fourth sleeve 540 is provided with a third convex column 541 in sliding fit with the second groove 514. When the first protrusion 521 is inserted between the at least two first protrusions 531 and the third protrusion 541 is inserted between the at least two third protrusions 515, the first section S₁And a fourth cross section S₄Are coplanar.

According to the spindle provided by the embodiment, by providing two grooves, namely the first groove 512 and the third groove 514, on the first sleeve 510, the first rod 51 can form a center of double folding, and the second rod 52 and the fourth rod 54 are ensured to perform symmetrical movement, so that the spindle 20 is stressed more evenly.

In one embodiment, as shown in FIG. 6, the first and

third grooves

512, 514 are offset symmetrically on the first sleeve about the axis of the first rod 54. The offset symmetry is relative to the direct symmetry, i.e. the first element can be aligned with the second element after being translated a distance in a direction parallel to the axis of symmetry, such that the first element and the second element are referred to as offset symmetry. The offset symmetry of the first and

third recesses

512, 514 ensures a greater angle of rotation of the second and

fourth bars

52, 54 than for a direct symmetry.

In one embodiment, as a variation of the first sleeve shown in fig. 6, the first sleeve may have two posts instead of two grooves. Accordingly, the second rod 52 and the fourth rod 54 are respectively sleeved with a second sleeve 120 or a third sleeve 130. In this case, the first rod 51 can also be formed into a center of double folding, so as to ensure that the second rod 52 and the fourth rod 54 perform symmetrical movement, and the force applied to the rotating shaft is more balanced.

The invention also provides a folding display screen. Fig. 7 is a schematic structural diagram of a foldable display screen according to an embodiment of the present invention. As shown in fig. 7, the folding display 30 includes a flexible display 31 and a rotating mechanism. The rotating mechanism includes a first housing 321 and a second housing 322 connected by a rotating shaft 320, and the rotating shaft 320 is a rotating shaft provided in any embodiment of the present invention. The first housing 321 includes a first surface, the second housing 322 includes a second surface, the first surface and the second surface form a bearing surface S, and the flexible display screen 31 is located on the bearing surface S.

According to the foldable display screen provided by the embodiment, technical effects corresponding to the flexible display screen can be obtained, and details are not repeated here.

The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

Claims

1. A spindle, comprising:

the first rod comprises a first limiting piece, and the first limiting piece is positioned on the side wall of the first rod; the first rod has a first cross-section passing through an axis of the first rod, the first cross-section passing through the first stop; and

the second rod is rotatably connected with the first rod and comprises a second limiting piece matched with the first limiting piece, and the second limiting piece is positioned on the side wall of the second rod; the second rod has a second cross section passing through an axis of the second rod, the second cross section passing through the second stop;

when the first rod and the second rod rotate relatively to the first limiting piece and the second limiting piece to be interlocked, the first cross section and the second cross section are coplanar.

2. The rotating shaft according to claim 1, wherein the first rod comprises a first sleeve sleeved on an outer wall of the first rod, and the first limiting member is arranged on the outer wall of the first sleeve; the second rod comprises a second sleeve which is sleeved on the outer wall of the second rod, and the outer wall of the second sleeve is provided with a second limiting part.

3. The spindle of claim 2, wherein the first retaining member comprises a first groove, and a predetermined section of the first groove is provided with at least two first protrusions spaced from each other; the second limiting part comprises a first convex column in sliding fit with the first groove; when the first convex column slides along the first groove until the first convex column is embedded between the at least two first bulges, the first cross section and the second cross section are coplanar.

4. A hinge according to claim 3, wherein the predetermined section of the first groove comprises a middle section of the first groove.

5. A spindle according to claim 3, characterised in that the first recess comprises two edge lines perpendicular to the axis of the first lever; the at least two first bulges comprise four first bulges, every two first bulges are positioned on the same edge line, and the connecting lines of the four first bulges are rectangular.

6. A rotatable shaft as claimed in any one of claims 3 to 5, wherein the second sleeve further comprises a second groove perpendicular to the axis of the second rod, a predetermined section of the second groove being provided with at least two second projections spaced from one another; the rotating shaft further comprises a third rod which is rotatably connected with the second rod, the third rod comprises a third sleeve which is sleeved on the outer wall of the third rod, a second convex column is arranged on the outer wall of the third sleeve, and the second convex column is in sliding fit with the second groove; the third rod has a third cross-section through an axis of the third rod, the third cross-section passing through the second post; when the second protrusion slides along the second groove until the second protrusion is embedded between the at least two second protrusions, the second cross-section and the third cross-section are coplanar.

7. The shaft according to claim 6, wherein an orthographic projection of the first boss in a direction perpendicular to the axis of the second rod falls between the at least two second protrusions.

8. A hinge according to any one of claims 3-5, wherein the first kit further comprises a third groove, wherein a predetermined section of the third groove is provided with at least two third protrusions; the rotating shaft further comprises a fourth rod which is rotatably connected with the first rod, the fourth rod comprises a fourth sleeve which is sleeved on the outer wall of the fourth rod, a third convex column is arranged on the outer wall of the fourth sleeve, and the third convex column is in sliding fit with the third groove; said fourth rod having a fourth cross-section through an axis of said fourth rod, said fourth cross-section passing through said third post; when the third protrusion slides along the third groove until the third protrusion is embedded between the at least two third protrusions, the first cross-section and the fourth cross-section are coplanar.

9. A spindle according to claim 8, wherein the first recess is symmetrical to the third recess about the axis of the first rod after translation for a distance in a direction parallel to the axis of the first rod.

10. A foldable display screen, comprising:

a flexible display screen, and

a rotary mechanism comprising a first housing and a second housing connected by a shaft according to any of claims 1-9, the first housing comprising a first surface and the second housing comprising a second surface, the first surface and the second surface forming a bearing surface on which the flexible display is located.