CN113366817A

CN113366817A - Electronic device

Info

Publication number: CN113366817A
Application number: CN201980090065.0A
Authority: CN
Inventors: 廖德知; 韦炜
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2021-09-07
Also published as: WO2021088020A1

Abstract

The invention provides an electronic device which comprises a flexible piece and a movable piece, wherein the flexible piece comprises a bendable part and a first connecting part close to the bendable part, the movable piece is connected with the first connecting part, the movable piece can be separated from the bendable part when the flexible piece is in a bent state, and the movable piece can be abutted against the bendable part when the flexible piece is in an expanded state. The electronic device can support the bendable part of the flexible piece in the unfolding state through the movable piece.

Description

Electronic device

Technical Field

The invention relates to the field of flexible screens, in particular to an electronic device with a flexible screen.

Background

In the current foldable terminal, a folding device is utilized to drive a flexible display screen to be bent and folded. For the fold-in terminal, it is desirable that the flexible display be bent with a predetermined curvature after the terminal is folded, and the flexible display be unfolded after the terminal is unfolded. Since the flexible display screen needs to be touched or pressed by a user after being unfolded, it is necessary to provide a device that can support the flexible display screen when being unfolded.

Disclosure of Invention

The invention aims to provide an electronic device.

The invention provides an electronic device, which comprises a flexible piece and a movable piece, wherein the flexible piece comprises a bendable part and a first connecting part close to the bendable part, the movable piece is connected with the first connecting part, the movable piece can be separated from the bendable part when the flexible piece is in a bent state, and the movable piece can be abutted against the bendable part when the flexible piece is in an expanded state.

According to the electronic device provided by the application, when the flexible element is bent, the movable element is separated from the bendable part of the flexible element; when the flexible member is unfolded, the movable member abuts against the bendable portion of the flexible member, so that the electronic device of the present application can support the bendable portion of the flexible member in the unfolded state through the movable member.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic folded state diagram of an electronic device provided in an embodiment of the present application;

fig. 2 is a schematic perspective cross-sectional view of an unfolded state of an electronic device according to an embodiment of the present disclosure;

fig. 3 is a schematic cross-sectional view illustrating an unfolded state of an electronic device according to an embodiment of the present disclosure;

fig. 4 is a schematic cross-sectional view illustrating a folded state of an electronic device according to an embodiment of the present application;

fig. 5 is an exploded schematic view of an electronic device according to an embodiment of the present disclosure;

fig. 6 is a schematic view illustrating a bending of a flexible display screen of an electronic device according to an embodiment of the present application;

fig. 7 is another exploded view of an electronic device according to an embodiment of the disclosure;

FIG. 8 is a schematic view of a first rotating shaft assembly of the electronic device provided in the embodiments of the present application;

fig. 9 is a schematic view of a second rotating shaft assembly of the electronic device according to the embodiment of the present disclosure;

fig. 10 is an exploded view of a second rotating shaft assembly of the electronic device according to the embodiment of the present disclosure;

fig. 11 is a partial perspective view of an electronic device according to an embodiment of the present application;

fig. 12 is a partial perspective view of an electronic device according to an embodiment of the present application.

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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1, 2 and 3, the present application provides an electronic device 1000, where the electronic device 1000 includes a flexible element and a movable element, the flexible element includes a bendable portion 120 and a first connection portion 111 close to the bendable portion 120, the movable element is connected to the first connection portion 111, the movable element can be separated from the bendable portion 120 when the flexible element is in a bent state, and the movable element can be abutted to the bendable portion when the flexible element is in an extended state.

Specifically, the electronic device 1000 includes a flexible display 100 and a foldable device 200. The flexible display 100 includes two connection portions 110 that are foldable with respect to each other and a bendable portion 120 connected between the two connection portions 110. The foldable device 200 includes a rotation shaft base 210 and two bodies 220 disposed at both sides of the rotation shaft base 210 and rotatable about the rotation shaft base 210. The two bodies 220 respectively drive the two connecting portions 110 to turn around the rotating shaft base 210. The flexible display screen 100 is a flexible member according to an embodiment of the present disclosure. The connection part 110 includes a first connection part 111 connecting the bendable part 120. The main body 220 includes a movable plate 221 connected to the rotation shaft base 210, and the movable plate 221 is a movable member according to an embodiment of the present disclosure. Of course, in other embodiments, the whole body of the main body 220 may be the movable member of the present embodiment, or other parts of the main body 220 connected to the movable plate 221 and the movable plate 221 together constitute the movable member of the present embodiment.

When the two bodies 220 rotate around the rotating shaft base 210 to the mutually unfolded state, the two connecting portions 110 and the bendable portion 120 are both located in the initial extension plane 1001, and the movable plate 221 and the bendable portion 120 are supported, that is, the bendable portion 120 abuts against the movable plate.

When the two bodies 220 drive the two connecting portions 110 to rotate around the rotating shaft base 210 to an overlapped state, the two connecting portions 110 are oppositely arranged, and the bendable portion 120 is bent. Alternatively, the bendable portion 120 is bent in an arc shape. The movable plate 221 rotates around the rotating shaft base 210 to be separated from the bendable portion 120, that is, the movable plate is separated from the bendable portion 120.

It is understood that the connection portion 110 is a portion of the flexible display screen 100 that is turned around the rotation axis base 210. The two connecting portions 110 can be turned around the rotating shaft base 210 to be unfolded or folded to each other, so as to achieve a flat state or a folded state of the electronic device 1000. The electronic device 1000 may be a mobile phone, a notebook computer, a tablet computer, an e-reader, or the like.

During the process that the two main bodies 220 of the foldable device 200 bring the connecting portion 110 of the flexible display screen 100 to turn around the hinge base 210 and close, the end of the bendable portion 120 can move toward the geometric center line of the hinge base 210. Alternatively, the end of the bendable portion 120 may be rotated with respect to the geometric centerline of the spindle base 210. Alternatively, the end of the bendable portion 120 may slide relative to the geometric centerline of the spindle base 210. Alternatively, the end of the bendable portion 120 may rotate and slide with respect to the geometric centerline of the spindle base 210. Therefore, the length of the bendable part 120 is kept constant or substantially constant before and after bending, electronic devices in which the bendable part 120 is stretched or compressed after bending are avoided or reduced, and the safety of the flexible display screen 100 is ensured.

Referring to fig. 3, 4 and 5, in the present embodiment, the bendable portion 120 is integrated with the two connecting portions 110. The bendable part 120 is located between the two connection parts 110. The boundary between the bendable portion 120 and the connecting portion 110 is determined by the boundary between the portion of the flexible display screen 100 that is freely bent and the portion of the flexible display screen that is not freely bent during the process of changing the flexible display screen 100 from the flat state to the folded state. The portion of the flexible display panel 100 that is freely bent refers to a portion that can be bent in a substantially arc-shaped curved surface during the folding process, and the portion that is not freely bent refers to a portion that is substantially planar during the folding process, or a portion that is substantially continuously bent in two or more planes. Alternatively, the bendable portion 120 is a region that is not subjected to an external force during the change of the flexible display screen 100 from the flat state to the folded state, and the connecting portion 110 is a region that is subjected to an external force during the change of the flexible display screen 100 from the flat state to the folded state. The flexible display screen 100 has a display surface 130. The two main bodies 220 are connected to a side of the flexible display 100 away from the display surface 130, and in this embodiment, the flexible display 100 is located inside the foldable device 200 to form a fold-in screen.

Specifically, the flexible display 100 includes two short sides 101 disposed opposite to each other and two long sides 102 disposed opposite to each other. Each long side 102 is connected between two short sides 101. The two short sides 101 are respectively provided at the two connection portions 110. The short side 101 is formed at the end of the connecting portion 110 remote from the bendable portion 120. The length of the long side 102 can be understood as the length of the flexible display 100. The long side 102 includes a turned edge 1021 provided to the connecting portion 110 and a free edge 1022 provided to the bendable portion 120. The length of the turning edge 1021 may be understood as the length or width of the connecting portion 110, and the length of the free edge 1022 may be understood as the length or width of the bendable portion 120.

In this embodiment, the rotation axis of the main body 220 rotating around the rotation axis base 210 is parallel to the short side 101 of the flexible display 100. When the flexible display screen 100 is in the unfolded state, the two main bodies 220 can respectively support the two connecting portions 110, and the hinge base 210 can support the bendable portion 120, so that the unfolded flexible display screen 100 can be stably fixed to the foldable device 200. When the two main bodies 220 are overlapped, the two connecting portions 110 and the bendable portion 120 are located between the two main bodies 220, and the bendable portion 120 can be suspended above the hinge base 210, that is, when the flexible display screen 100 is in the bent state, the bendable portion 120 is in the free state, so that the foldable device 200 can effectively shield the flexible display screen 100.

It can be understood that, when the two bodies 220 bring the two connecting portions 110 to be unfolded, the flexible display screen 100 is in a flat state, that is, the connecting portions 110 and the bendable portions 120 are flush, and the display surface 130 forms a flat surface. The display surface 130 of the flexible display 100 in the flattened state can be understood as an initial display plane 1001. Of course, the neutral plane of the layer structure of the flexible display screen 100 in the flattened state may be understood as the initial spreading plane 1001, or the back side of the flexible display screen 100 away from the display surface 130 in the flattened state may be understood as the initial spreading plane 1001.

Referring to fig. 3, 4 and 6, in the embodiment of the present application, the initial display plane 1001 is only used as a reference plane for visually simplifying the flexible display screen 100 into a bendable plane to change the position during the process of changing the flexible display screen 100 from the flat state to the folded state, and is not used as an actual component structure to limit the electronic device 1000. The connecting portion 110 and the bendable portion 120 may each be visualized as a portion of one foldable plane. In the illustration of fig. 6, the flexible display 100 is represented by a line A, A ', the connecting portion 110 and the bendable portion 120 are each illustrated by a portion of the line A, A', and the ends of the bendable portion 120 can be understood to be illustrated by two points in the line a. As shown in fig. 6, both ends of the bendable portion 120 in the flattened state are indicated by an end point a and an end point a'. Both ends of the bendable portion 120 in the bent state are indicated by an end point b and an end point b'. In the process that the two bodies 220 rotate the two connecting portions 110 to overlap each other around the rotating shaft base 210, the end of the bendable portion 120 moves inward, i.e., the end point a moves to the end point b along the initial extension plane 1001. That is, when the flexible display screen 100 is bent, the abutment of the first connection portion 111 and the bendable portion 120 moves from a position away from the bending center plane of the flexible display screen 100 to a position close to the bending center plane of the flexible display screen 100. Conversely, when the two bodies 220 rotate the two connecting portions 110 around the rotating shaft base 210 from the folded state to the unfolded state, the end of the bendable portion 120 moves from the end point b to the end point a. That is, when the flexible display 100 is unfolded, the abutment of the first connecting portion 111 and the bendable portion 120 moves from a position close to the bending center plane of the flexible display 100 to a position away from the bending center plane of the flexible display 100.

The closed-state pitch of the two ends of the bendable portion 120 refers to a linear distance between the two ends of the bendable portion 120 in the bent state, i.e., the closed-state pitch of the bendable portion 120 is a distance from the end point b to the end point b'. The expanded-state pitch of the two ends of the bendable portion 120 refers to a linear distance between the two ends of the bendable portion 120 in the flattened state, that is, the expanded-state pitch of the bendable portion 120 is a distance from the end point a to the end point a'.

It can be understood that, in the process of the electronic device 1000 changing from the unfolded state to the folded state, the connecting portion 110 does not form bending deformation all the time, that is, the length of the connecting portion 110 does not change all the time, that is, in the process of the electronic device 1000 changing from the unfolded state to the folded state, the length of the whole flexible display screen 100 does not change, and the safety of the flexible display screen 100 is ensured.

When the two ends of the bendable portion 120 move from the end point a and the end point a 'to the end point b and the end point b', respectively, the foldable device 200 is in a closed state, that is, the two main bodies 220 are closed, the two connecting portions 110 cannot move closer to each other with respect to the rotation shaft base 210, and the two connecting portions 110 may be partially attached to each other, or the end portions of the two connecting portions 110 may be close to each other, and a preset distance may exist between the two connecting portions 110. The bendable portion 120 may be bent in a substantially "U" shaped curved surface. Optionally, when the foldable device 200 is in the folded state, the two bodies 220 are attached to each other and parallel to each other. When the two ends of the bendable portion 120 move from the end points b and b 'to the end points a and a', the two main bodies 220 are unfolded from each other, and the two main bodies 220 and the two connecting portions 110 cannot continue to perform the unfolding motion around the rotating base 210, so as to ensure the safety of the flexible display screen 100. It can be understood that, when the flexible display screen 100 is in the bending state, the length of the arc of the bendable portion 120 is greater than pi × R, where R is the bending radius of the bendable portion 120 in the bending state.

Further, the connecting portion 110 includes a first connecting portion 111 connected to the bendable portion 120 and a second connecting portion 112 connected to the first connecting portion 111 and far away from one end of the bendable portion 120, when the two connecting portions 110 are in a mutually overlapped state, the two second connecting portions 112 are closed, and the two first connecting portions 111 are mutually closed at an included angle. Optionally, the two second connecting portions 112 are parallel and attached to each other, and an acute angle is formed between the two first connecting portions 111. Since the two second connecting portions 112 can be attached to each other, the area outside the folded flexible display screen 100 can be reduced, and the damage of the flexible display screen 100 can be reduced; moreover, the thickness of the whole folded electronic device 1000 can be reduced, and the portability of the whole folded electronic device 1000 is improved.

In the present embodiment, the first connection portion 111 is connected to an end portion of the bendable portion 120. The second connection portion 112 is connected to an end portion of the first connection portion 111 away from the bendable portion 120. In the process of changing the electronic device 1000 from the unfolded state to the folded state, the first connecting portion 111 is bent relative to the second connecting portion 112, so that the second connecting portions 112 can be attached to each other by the electronic device. The first connection portion 111 is integrally connected to the bendable portion 120 and the second connection portion 112. When the bendable portion 120 is in the bending deformation state, the first connecting portion 111 and the bendable portion 120 are in a structure in which a plane is tangent to a curved surface. The end of the bendable portion 120 adjacent to the first connection portion 111 is tangent to the end of the first connection portion 111 adjacent to the bendable portion 120. When the connecting portions 110 are in an overlapped state, the first connecting portion 111 and the second connecting portion 112 form two plane included angles.

It can be understood that the two second connection portions 112 can be closed, so that the two connection portions 110 can be tightly closed to ensure that the two main bodies 220 can be tightly closed, and the two first connection portions 111 are mutually in an included angle close shape, so as to ensure that the bending radius of the bendable portion 120 does not exceed the bending radius, thereby ensuring the safety of the flexible display screen 100. When the two connecting portions 110 are in an overlapped state, the two first connecting portions 111 and the bendable portion 120 are substantially in a droplet-shaped structure, and the two first connecting portions 111 and the bendable portion 120 are accommodated between the two main bodies 220 and the rotating shaft base 210, so as to ensure the safety of the flexible display screen 100.

In the process of changing the two connecting portions 110 from the unfolded state to the folded state, the first connecting portion 111 can rotate relative to the second connecting portion 112, and a smaller portion between the first connecting portion 111 and the second connecting portion 112 is bent and deformed.

Further, the main body 220 is provided with a movable plate 221 rotatably connected to the rotating shaft base 210, the movable plate 221 drives the first connecting portion 111 to rotate from the initial spreading plane 1001 to the close state by a predetermined rotation angle α, and the end of the bendable portion 120 forms a connection line B along the forward-backward movement position; the rotation axis of the movable plate 221 is located on the perpendicular bisector C of the connecting line B, and the included angle between the rotation axis of the movable plate 221 and the connecting line at the two ends of the connecting line B is equal to the preset rotation angle α.

In the present embodiment, the movable plate 221 rotates around the rotation shaft base 210. The rotation axis of the movable plate 221 is parallel to the length direction of the rotation shaft base 210, so as to conveniently drive the first connection portion 111 to rotate relative to the rotation shaft base 210. The side of the movable plate 221 facing the flexible display 100 is a flat surface. The first connecting portion 111 is attached to the movable plate 221 to ensure that the first connecting portion 111 is always in a flat state. The movable plate 221 may completely cover the first connection portion 111 to ensure that the movable plate 221 can effectively support the first connection portion 111. Alternatively, the first connection portion 111 may be fixed on the movable plate 221. Alternatively, one end of the first connecting portion 111 adjacent to the bendable portion 120 is fixed on the movable plate 221, and the other end of the first connecting portion away from the bendable portion 120 is fixed on the movable plate 221.

The end points a and b can also be regarded as two different positions where the end portion of the first connection portion 111 connected to the bendable portion 120 rotates around the rotation axis base 210, that is, the end points a and b are on the rotation track of the end portion of the first connection portion 111 connected to the bendable portion 120. By finding the center of the rotation track of the end portion of the first connecting portion 111, the rotation axis of the first connecting portion 111 around the rotating shaft base 210, that is, the rotation axis of the movable plate 221 around the rotating shaft base 210, can be found.

It is understood that the line B is a line connecting the end points a and B. And a perpendicular bisector C of the connecting line B is a reference line passing through the midpoint of the connecting line B, and the distances from any point on the perpendicular bisector C to the endpoint a and the endpoint B are equal. That is, the center of the rotation locus of the end portion of the first connecting portion 111 is on the perpendicular bisector C. Since the rotation angle of the end portion of the first connection portion 111 from the end point a to the end point b is the preset rotation angle α, the included angle between the connection line from the center of the rotation track of the end portion of the first connection portion 111 to the end point a and the connection line from the center of the rotation track of the end portion of the first connection portion 111 to the end point b is equal to the preset rotation angle α, and according to the trigonometric function relationship, it can be determined that a center point o exists on the perpendicular bisector C, and the included angle between the connection line from the center point o to the end point a and the connection line from the center point o to the end point b is equal to the preset rotation angle α. The central point o is a center of a rotation track of the end portion of the first connecting portion 111, and a straight line passing through the central point o and parallel to the length direction of the rotating shaft base 210 can be regarded as a rotation axis of the first connecting portion 111 rotating around the rotating shaft base 210, so as to find out a rotation axis of the movable plate 221 rotating around the rotating shaft base 210.

The rotating shaft of the movable plate 221 is arranged on the rotating shaft base 210 according to the found rotating shaft position, so that the movable plate 221 rotates around the rotating shaft base 210, and can drive the first connecting portions 111 to rotate around the rotating shaft base 210, and the lengths of the bendable portions 120 connecting the two first connecting portions 111 in the unfolding state and the bending state are not changed, thereby ensuring that the flexible display screen 100 is not extruded or elongated and damaged.

In the present embodiment, when the two movable plates 221 are unfolded, the inner edges of the two movable plates 221 are spliced with each other, and the two movable plates 221 support the two first connecting portions 111 and the bendable portion 120 together. Specifically, the movable plate 221 has a first edge 2211 generally aligned with an end of the first connection portion 111 distal from the bendable portion 120 and a second edge 2212 opposite the first edge 2211. The distance from the first edge 2211 to the second edge 2212 is substantially equal to the length of the first connection portion 111 plus half of the length of the bendable portion 120, so that after the two movable plates 221 are unfolded and aligned and spliced with each other, the distance between the first edges 2211 of the two movable plates 221 is substantially equal to the width of the two first connection portions 111 plus the width of the bendable portion 120, that is, the two movable plates 221 not only effectively support the first connection portion 111, but also effectively support the bendable portion 120.

Further, the main body 220 further has a middle frame 222 rotatably connected to the rotation shaft base 210 and capable of extending and retracting relative to the movable plate 221. The middle frame 222 is fixedly connected to the second connecting portion 112. When the first connection portion 111 and the second connection portion 112 are both in the state of the initial display plane 1001, the movable plate 221 is unfolded relative to the middle frame 222 to jointly support the flexible display screen 100; when the two connecting portions 110 are overlapped, the movable plates 221 are contracted with respect to the middle frame 222, so that a receiving space for receiving the two second connecting portions 112 and the bendable portion 120 is formed between the two movable plates 221. The middle frame 222 can support the second connecting portion 112, and the middle frame 222 is a supporting member connected to the second connecting portion 112 in the embodiment of the present application, and the supporting member can rotate around the rotating shaft base 210. Of course, other components of the main body 220 connected to the middle frame 222 and the middle frame 222 may also be used together to form the support member in the embodiment of the present application.

In this embodiment, the middle frame 222 fixes the second connecting portion 112, so that when the middle frame 222 receives an external driving force to rotate relative to the rotating shaft base 210, the middle frame 222 can drive the second connecting portion 112 to rotate around the rotating shaft base 210. In the process of changing the electronic device 1000 from the unfolded state to the folded state, the middle frame 222 rotates around the rotating base 210, so that the movable plate 221 is forced to rotate around the rotating base 210, and the movable plate 221 pushes the first connecting portion 111 to rotate around the rotating base 210. The bendable portion 120 has no limitation on its shape, so that the bendable portion 120 can be bent freely, that is, two ends of the bendable portion 120 can be moved from the end points a and a 'to the end points b and b', and the bendable portion 120 is bent in a U-shaped curved surface.

In the process of changing the electronic device 1000 from the folded state to the unfolded state, the two middle frames 222 can drive the two second connecting portions 112 to be unfolded. The movable plate 221 generates an acting force on the first connection portions 111, the two first connection portions 111 are respectively unfolded with each other under the acting force of the connection portions, and the two first connection portions 111 respectively pull the two end portions of the bendable portion 120 to be unfolded with each other.

It can be understood that the middle frame 222 is fixedly connected to a surface of the second connection portion 112 away from the display surface 130 to keep the second connection portion 112 in a flattened state. The middle frame 222 may be adhered to the second connecting portion 112 by an adhesive, or may be engaged with an edge of the second connecting portion 112, or may be magnetically attached to the second connecting portion 112. The rotation axis of the middle frame 222 is parallel to the rotation axis of the movable plate 221, the rotation axis of the middle frame 222 is staggered with the rotation axis of the movable plate 221, and the middle frame 222 and the movable plate 221 can extend and retract with respect to each other, so that the middle frame 222, the movable plate 221 and the rotation shaft base 210 form a dual-crank link mechanism. The two middle frames 222 are used to drive the two second connecting portions 112 to close, and the movable plates 221 are retracted relative to the middle frames 222, so that a substantially triangular accommodating space is formed between the two movable plates 221. The receiving space between the two movable plates 221 receives the two first connecting portions 111 and the bendable portion 120, so as to prevent the flexible display 100 from being damaged by the two main bodies 220.

Specifically, the rotation axis of the middle frame 222 is parallel to the rotation axis of the movable plate 221. Since the two second connecting portions 112 are mirror-symmetrical with respect to the geometric center section 1002 of the spindle base 210, in order to allow the two second connecting portions 112 to be tightly closed, the closed surfaces of the two second connecting portions 112 are disposed to substantially coincide with the geometric center section 1002 of the spindle base 210. The geometric center section 1002 of the spindle base 210 is a section passing through the geometric center axis of the spindle base 210 and perpendicular to the initial development plane 1001. It is understood that the rotation axis or the rotation axis referred to in the present application may be a physical axis or a virtual axis, depending on the actual requirements. Alternatively, the rotation axis of the middle frame 222 may be the rotation axis of the second connecting portion 112, and the rotation axis of the movable plate 221 may be the rotation axis of the first connecting portion 111. Optionally, the rotation axis of the first connection portion 111 is farther from the initial display plane 1001 or the display surface of the flexible display screen 100 than the rotation axis of the second connection portion 112. Alternatively, the rotation axis of the first connecting portion 111 is closer to the geometric center plane of the spindle base 210 or the abutting surfaces of the two second connecting portions 112 than the rotation axis of the second connecting portion 112. Alternatively, the rotation axis of the second connection portion 112 is a solid axis, and the rotation axis of the first connection portion 111 is a virtual axis. Alternatively, the radius of rotation of the first connecting portion 111 is smaller than the radius of rotation of the second connecting portion 112. Since the rotation axis of the first connecting portion 111 is offset from the rotation axis of the second connecting portion 112, when the middle frame 222 drives the movable plate 221 to rotate, the movable plate 221 needs to slide relative to the middle frame 222 for compensation. Alternatively, when the middle frame 222 drives the movable plate 221 to fold, the movable plate 221 slides relative to the middle frame 222 towards the middle frame 222; when the middle frame 222 drives the movable plate 221 to expand, the movable plate 221 slides away from the middle frame 222 relative to the middle frame 222. Optionally, when the middle frame 222 drives the movable plate 221 to fold, the movable plate 221 also rotates relative to the middle frame 222, so that the second connecting portion 112 can be attached to each other in the folded state. Besides the compensation of the staggered rotating shaft, the sliding of the movable plate 221 relative to the middle frame 222 can also compensate the length difference caused by the rotation of the movable plate 221 relative to the middle frame 222, so as to prevent the flexible display screen 100 from being stretched or extruded.

Alternatively, when the flexible display screen 100 is folded, the bendable portion 120 is depressed downward or toward the hinge base 210 to form an arc shape. Optionally, the length of the arc formed by the recess of the bendable portion 120 is greater than pi × R, where R is the bending radius of the bendable portion 120. Alternatively, when the flexible display screen 100 is folded, the end of the first connection portion 111 adjacent to the bendable portion 120 rotates around the rotation axis of the first connection portion 111, wherein the position of the end of the first connection portion 111 adjacent to the bendable portion 120 in the folded state is at the same height as the position in the flattened state.

Alternatively, the length of the bendable portion 120 when it is deployed is set to L, the radius of the arc formed by the bendable portion 120 after bending is set to R, and to ensure that the length of the bendable portion 120 after bending remains unchanged, the straight distance D between the opposite ends (b, b' in this embodiment) of the bendable portion 120 after bending satisfies:

optionally, based on reasons of assembly tolerances and manufacturing tolerances, D satisfies:

optionally, D may also satisfy:

further, referring to fig. 7, 8 and 9, the rotating shaft base 210 is provided with a plurality of rotating shaft assemblies, the plurality of rotating shaft assemblies are arranged at intervals along the length direction of the rotating shaft base 210, each rotating shaft assembly comprises a bearing bracket and two rotating wheels, the bearing bracket is provided with two rotating shaft grooves which are staggered, the two rotating wheels are respectively in rotating fit with the two rotating shaft grooves, and the two rotating wheels are respectively fixed on the two movable plates 221 so as to drive the movable plates 221 to rotate relative to the rotating shaft base 210.

In the present embodiment, the rotation shaft base 210 is further provided with a rotation shaft housing 211 (see fig. 4), and the plurality of rotation shaft assemblies are fixed in the rotation shaft housing 211. The spindle housing 211 shields the spindle assembly. Specifically, the spindle base 210 is provided with a first spindle assembly 212 fixed to the spindle housing 211 at a substantially middle position in the longitudinal direction. The first rotating shaft assembly 212 is provided with a first bearing bracket 2121 and two first rotating wheels 2122 rotatably connected to the first bearing bracket 2121. The first bearing bracket 2121 has two staggered rotation shaft slots 2124, two first rotation wheels 2122 are respectively rotatably engaged with the two rotation shaft slots 2124, and the two first rotation wheels 2122 are respectively fixed to the two movable plates 221 to drive the movable plates 221 to rotate relative to the rotation shaft base 210.

More specifically, the first bearing support 2121 includes two opposing bearing blocks 2123. The two bearing blocks 2123 are disposed opposite to each other in the longitudinal direction of the rotation shaft housing 211. The two rotation shaft grooves 2124 are respectively provided on the two bearing blocks 2123. The rotation shaft groove 2124 is a semicircular groove, that is, the bottom surface of the rotation shaft groove 2124 is a semicircular curved surface. The first rotation wheel 2122 is a semicircular roller. A semicircular outer side wall of the first rotation wheel 2122 is fitted with a semicircular bottom surface of the rotation shaft groove 2124 so that the first rotation wheel 2122 can rotate in the rotation shaft groove. The central axis of the first rotation wheel 2122 forms a rotation axis of the movable plate 221. The rotational axis of the first rotational wheel 2122 may be the rotational axis of the movable plate 221. The central axis of the first rotating wheel 2122 is a straight line passing through the center of the semicircular edge on the end face of the first rotating wheel 2122. The two rotation shaft grooves 2124 are staggered so that the central axes of the two first rotation wheels 2122 are spaced apart, i.e., the rotation shafts of the two movable plates 221 are spaced apart.

In this embodiment, one end of the first rotating wheel 2122 is provided with a guide flange 2125 protruding in a direction parallel to the longitudinal direction of the rotating shaft base 210. The guide flange 2125 extends along a semicircular curve. The end of the rotational shaft groove 2124 is provided with a guide groove 2126 which is fitted with the guide flange 2125. The guide lip 2125 is fitted into the guide groove 2126, so that the first rotating shaft 2122 is not easily disengaged from the rotating shaft groove 2124. An end of the first rotation wheel 2122 remote from the guide flange 2125 extends beyond the rotation shaft slot 2124. Of course, in another embodiment, a guide flange 2125 may be provided on the peripheral side wall of the first rotation wheel 2122.

In the present embodiment, the movable plate 221 is fixed to the distal end surface of the first rotation wheel 2122. When the two movable plates 221 are in the extended state, the top end surface of the first rotating wheel 2122 is flush with the top end surface of the bearing block 2123, so as to drive the two movable plates 221 to be in the flush state. The movable plate 221 and the first rotation wheel 2122 may be connected via screws. The edge of the movable plate 221 distal from the middle frame 222 is generally aligned with the edge of the top end of the first rotation wheel 2122 distal from the middle frame 222. When the two movable plates 221 rotate to close with respect to the rotating shaft base 210, the first rotating wheel 2122 partially rotates out of the rotating shaft slot 2124, the portion of the first rotating wheel 2122 away from the middle frame 222 rotates into the bottom of the rotating shaft slot 2124, and the edge of the movable plate 221 away from the middle frame 222 rotates into the bottom of the rotating shaft slot 2124, so that the movable plates 221 partially contract towards the rotating shaft base 210, thereby increasing the accommodating space between the two movable plates 221 and facilitating the accommodating of the bendable portion 120 between the two movable plates 221. Of course, in other embodiments, the movable plate 221 and the first rotation wheel 2122 may be adhered to each other.

Further, each bearing bracket is provided with two clearance grooves 2127 which are arranged in an interlaced manner and respectively communicated with the two rotating shaft grooves, and when the two first connecting portions 111 are in an overlapped state, the edge portion of each movable plate 221 close to the rotating shaft base 210 is accommodated in the rotating shaft groove and the clearance groove 2127 on the corresponding single side.

In this embodiment, two clearance grooves 2127 are provided in the two bearing blocks 2123, respectively. The clearance groove 2127 of each bearing block 2123 is disposed in parallel with the rotation shaft groove 2124, and the clearance groove 2127 is disposed opposite to the rotation shaft groove 2124 of the other bearing block 2123, so that the edge of the movable plate 221 away from the middle frame 222 can be retracted relative to the rotation shaft base 210. The rotating shaft groove 2124 is provided with a limiting inner wall. When the edge portion of the movable plate 221 away from the middle frame 222 rotates into the clearance groove 2127, the limiting inner wall blocks the movable plate 221 to prevent the movable plates 221 from continuously rotating, so as to limit the rotation of the movable plate 221.

Further, the plurality of rotating shaft assemblies further include a synchronous transmission assembly 213, the synchronous transmission assembly 213 is connected to the two rotating wheels, and the synchronous transmission assembly 213 is configured to drive the two rotating wheels to rotate synchronously relative to the bearing block 2123.

In this embodiment, the timing drive assembly 213 is disposed between two bearing blocks 2123 of the first shaft assembly 212. One end of the first rotation wheel 2122 extends out of the rotation shaft slot 2124 and protrudes relative to a side wall of the bearing block 2123. The synchronous transmission assembly 213 is connected to one ends of the two first rotation wheels 2122 extending out of the rotation shaft slot 2124. Specifically, the first shaft assembly 212 further includes a driver block 2128, and the driver block 2128 is fixed between the two bearing blocks 2123. The synchronous transmission assembly 213 includes two first gears 2131 fixedly connected to the two first rotation wheels 2122, two racks 2132 engaged with the two first gears 2131 and slidably connected to the first bearing support 2121, and a second gear 2133 engaged with the two racks 2132 and rotatably connected to the bearing support. The two first gears 2131 are fixed to one ends of the two first rotation wheels 2122 extending out of the rotation shaft slot 2124, respectively. Two racks 2132 are slidably connected to the drive block 2128. Gear 2133 is rotatably coupled to drive block 2128. When the movable plate 221 drives the first rotating wheel 2122 to rotate, the first gear 2131 of the first rotating wheel 2122 drives the rack 2132 to slide, the sliding of the rack 2132 drives the second gear 2133 to rotate, the second gear 2122 rotates to drive the rack 2132 on the other side to slide in the opposite direction, and drives the first gear 2131 and the first rotating wheel 2122 on the other side to rotate in the opposite direction, so that synchronous transmission is achieved. Of course, in other embodiments, the synchronous transmission assembly 213 may be a linkage mechanism for synchronous transmission.

Further, referring to fig. 7, 9 and 10, at least one of the rotating shaft assemblies further includes a damping transmission assembly 214, the damping transmission assembly 214 is connected to the two rotating wheels, and the damping transmission assembly 214 is configured to provide a damping force for the two rotating wheels to rotate relative to the rotating shaft base 210.

In this embodiment, the rotating shaft base 210 further has two second rotating shaft assemblies 215 respectively located at two ends of the rotating shaft housing 211 in the length direction. Each second rotary shaft assembly 215 is provided with a second bearing support 2151 and two second rotary wheels 2152 rotatably coupled to the second bearing support 2151. The second bearing bracket 2151 is fixed to the spindle housing 211. The two second rotating wheels 2152 are fixedly connected to the two movable plates 221, respectively, such that the two movable plates 221 can rotate about the rotating shaft base 210. The second bearing support 2151 is substantially the same as the first bearing support 2121 in structure, and is different in that two bearing blocks 2123 of the second bearing support 2151 are connected side by side and integrally arranged, and the structure of the second bearing support 2151 is not described again in detail. The second rotating wheel 2152 is substantially the same as the first rotating wheel 2122, the second rotating wheel 2152 is coaxially disposed with the first rotating wheel 2122, and the detailed structure of the second rotating wheel 2152 is not described herein.

Specifically, each second shaft assembly 215 includes a damping transmission assembly 214. The damping transmission assembly 214 is connected to the two second rotating wheels 2152, and the damping transmission assembly 214 is configured to provide a damping force for the rotation of the two second rotating wheels 2152 relative to the rotation shaft base 210. The damping transmission assembly 214 includes two damping shafts 2141 and a damping plate 2142 sleeved on the two damping shafts 2141. The two damping shafts 2141 include a first damping shaft 2143 and a second damping shaft 2144. The first damping rotating shaft 2143 is fixedly connected to the second bearing support 2151. The second damping rotation shaft 2144 is rotatably connected to the second bearing support 2151, and the second damping rotation shaft 2144 can rotate relative to the second bearing support 2151. The first damping rotating shaft 2143 and the second damping rotating shaft 2144 are disposed in parallel. The ends of the two damping rotating shafts 2141 are sleeved with damping fins 2142. The end of the second damping rotating shaft 2144 is connected to the second rotating wheel 2152 via a gear transmission structure, so that the second rotating wheel 2152 drives the second damping rotating shaft 2141 to rotate synchronously. Alternatively, an annular third gear 2145 is formed on the outer circumferential surface of the second damping rotation shaft 2144, and a convex fourth gear 2153 is formed at a position of the second rotation wheel 2152 corresponding to the annular third gear 2145 to mesh with the annular third gear 2145. When the second rotating wheel 2152 is driven by the movable plate 221 to rotate, the convex fourth gear 2153 rotates to drive the annular third gear 2145 to rotate, and further drives the second damping shaft 2144 to rotate. Due to the function of the damping sheet, the rotation of the first damping rotating shaft 2143 and the second damping rotating shaft 2144 in the damping sheet generates a rotational damping. The damping plate 2142 has two through holes, and the two through holes are respectively in interference fit with one ends of the two damping rotating shafts 2141. The end portions of the two damping rotating shafts 2141 are sleeved with a plurality of damping pieces 2142, and the plurality of damping pieces 2142 are stacked to increase the rotational damping force of the second damping rotating shaft 2144. The damping transmission assembly 214 is connected to the two second rotating wheels 2152, so that the movable plate 221 rotates relative to the rotation shaft base 210 with a damping force. When the driving force for driving the movable plate 221 to rotate is removed, the movable plate 221 is kept fixed relative to the rotating shaft base 210 by the second rotating wheel 2152 under the action of the rotational damping force, so as to stabilize the positions of the movable plate 221 and the middle frame 222, and further stabilize the folding configuration of the flexible display panel 100.

Further, referring to fig. 7, 11 and 12, the main body 220 further has a middle frame driving member 223 rotatably connected to an end of the rotating shaft base 210, the middle frame driving member 223 drives the middle frame 222 to rotate around the rotating shaft base 210, and the movable plate 221 is slidably connected to the middle frame driving member 223 away from the rotating shaft base 210 to extend and retract relative to the middle frame 222. Wherein the middle frame driving member 223 and the middle frame 222 together constitute a supporting member of the embodiment of the present application.

In this embodiment, the middle frame driving member 223 is rotatably connected to both ends of the rotation shaft housing 211 in the longitudinal direction. Specifically, end baffles 2111 are provided at both ends of the rotating shaft housing 211 in the longitudinal direction. Two driving shafts 2112 are provided on the end baffle 2111, which are arranged side by side at an interval. The two middle frame driving members 223 are rotatably connected to the two driving rotating shafts 2112, respectively. Alternatively, the drive shaft 2112 forms the rotational axis of the middle frame 222. More specifically, the middle frame driving member 223 is provided with a rotation coupling plate 2231 arranged in parallel with the end baffle 2111 and a fixed coupling plate 2232 fixed to the rotation coupling plate 2231. The fixed link 2232 is substantially perpendicular to the rotating link 2231 and connects to the center frame 222. The rotating connecting plate 2231 is further provided with a movable chute 2233. The end of the edge of the movable plate 221 away from the rotating shaft base 210 is provided with a movable guide post 2213 slidably engaged with the movable sliding groove 2233, so that the movable plate 221 can extend and retract relative to the middle frame 222. That is, the movable plate 221 is rotatably and slidably connected to the middle frame driving member 223 through the movable guide post 2213, and when the flexible display panel 100 is bent, the movable guide post 2213 slides toward the middle frame driving member 223 relative to the middle frame driving member 223. Wherein, activity guide pillar 2213 is the axis of rotation that the moving part of this application embodiment rotated around support piece, and the moving part rotates with support piece through activity guide pillar 2213 promptly and is connected, and when flexible display screen was crooked, activity guide pillar can slide to support piece relatively. Of course, in other embodiments, the driving shaft 2112 may be provided on the middle frame driving element 223, and the end of the shaft housing 211 is rotatably connected to the driving shaft 2112 of the middle frame driving element 223.

Further, the main body 220 is further provided with a sliding block 224 fixed to the middle frame 222, the middle frame driving member 223 is provided with a guiding block 2234 slidably engaged with the sliding block 224, and the sliding block 224 can drive the middle frame 222 to slide relative to the middle frame driving member 223. In this embodiment, the guide block 2234 is fixed to the fixed link 2232 and extends substantially perpendicular to the longitudinal direction of the shaft base 210. The sliding block 224 is sleeved on the guiding block 2234 and can slide relative to the spindle base 210 along a direction substantially perpendicular to the length direction of the spindle base 210. The two second connecting portions 112 can be opened away from the rotation shaft base 210, so that the flexible display screen 100 is in a tightened state, and the first connecting portion 111 and the second connecting portion 112 of the flexible display screen 100 are more flat.

Further, the main body 220 is further provided with an elastic member 225 elastically connected to the middle frame driving member 223 and the sliding block 224, the elastic member 225 is used for providing an elastic restoring force for the sliding block 224 to move away from the middle frame driving member 223, and the two middle frames 222 provide a tightening force for the two second connecting portions 112 to move away from each other under the elastic force of the elastic member 225. By using the elastic force of the elastic member 225, the flexible display screen 100 can be kept in a taut state, thereby improving the user experience. The elastic member 225 may be a rectangular spring. The fixed connecting plate 2232 is provided with an elastic guide post, and the elastic member 225 is sleeved on the elastic guide post and respectively abutted against the fixed connecting plate 2232 and the sliding block 224. Of course, the elastic member 225 may be a torsion spring. Optionally, an elastic member 225 is pre-compressed between the middle frame driving member 223 and the slider 224.

Further, a first limiting portion is disposed on the sliding block 224, a second limiting portion in sliding fit with the first limiting portion is disposed on the guide sliding block 2234, and the first limiting portion is in limiting fit with the second limiting portion to limit the sliding distance of the sliding block 224 relative to the middle frame driving member 223. The first limiting part can be a limiting boss, and the second limiting part can be a limiting groove matched with the limiting boss. The first limiting portion is in sliding fit with the second limiting portion, and the first limiting portion slides to the two closed ends of the second limiting portion to limit the sliding of the sliding block 224 and the sliding guide block 2234. The slider 224 is restricted by the first and second restricting portions, so that the slider 224 can be prevented from being separated from the guide slider 2234. Alternatively, when the flexible display screen 100 is bent, the distance between the sliding block 224 and the middle driving member 223 is kept unchanged, that is, the sliding movement between the two is not generated, and the compression amount of the elastic member 225 is kept unchanged. Alternatively, when the flexible display screen 100 is bent, the distance between the sliding block 224 and the middle driving member 223 becomes smaller, that is, the sliding movement between the two occurs, and the compression amount of the elastic member 225 increases.

Further, the middle frame 222 includes a middle plate 2223 attached to the second connecting portion 112, and when the movable plate 221 is unfolded from the middle frame 222, the movable plate 221 is flush with the middle plate 2223; when the movable plate is retracted from the middle frame 222, the movable plate 221 forms an included angle with the middle plate 2223. The middle plate 2223 may support the second connection part 112. The middle plate 2223 may be adhered to the back of the second connection portion 112. The middle frame 222 further includes a frame 2224 fixed to a side portion of the middle plate 2223, and a cover plate 2225 fixedly connected to the frame 2224 and opposite to the middle plate 2223, wherein a receiving cavity is formed among the frame, the cover plate 2225 and the middle plate 2223; when the two middle frames 222 are unfolded, a portion of the shaft base 210 is received in one of the receiving cavities, and another portion is received in the other receiving cavity of the middle frame 222. After the two middle frames 222 are unfolded, the two middle frames 222 are spliced together and are accommodated in the spindle base 210 together, so that the spindle base 210 is hidden in the two middle frames 222. After the two middle frames 222 are folded, the rotation shaft base 210 is partially exposed out of the two containing cavities. The main body 220 is further provided with a functional device fixed in the receiving cavity. The functional device may be a motherboard, battery, memory, antenna, speaker, camera, etc.

In the electronic device 1000 provided by the invention, in the process of turning and closing the connecting portion 110 of the flexible display screen 100 around the rotating shaft base 210 by driving the two main bodies 220 of the foldable device 200, the two end portions of the bendable portion 120 can move towards the direction close to the geometric center line of the rotating shaft base 210, so that the length of the bendable portion 120 in the flat state is equal to that in the bent state, the length of the flexible display screen 100 in the unfolded state can be ensured to be equal to that in the folded state, the structure of the electronic device 1000 is simplified, and the safety of the flexible display screen 100 is ensured.

The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.

Claims

An electronic device is characterized in that the electronic device comprises a flexible element and a movable element, the flexible element comprises a bendable portion and a first connecting portion close to the bendable portion, the movable element is connected with the first connecting portion, when the flexible element is in a bent state, the movable element can be separated from the bendable portion, and when the flexible element is in an expanded state, the movable element can be abutted to the bendable portion.
The electronic device of claim 1, wherein the bendable portion forms an arc with a length greater than pi x R when the flexible member is in the bent state, where R is a bending radius of the bendable portion in the bent state.
The electronic device of claim 1, wherein the bendable portion is in a free state when the flexible member is in a bent state.
The electronic device according to claim 1, wherein when the flexible member is in the bent state, the end of the bendable portion adjacent to the first connecting portion is tangent to the end of the first connecting portion adjacent to the bendable portion.
The electronic device according to claim 1, wherein when the flexible member is bent, the abutment of the first connecting portion and the bendable portion moves from a position away from a bending center plane of the flexible member to a position close to the bending center plane of the flexible member.
The electronic device according to claim 1, wherein a height of an abutment of the first connecting portion with the bendable portion when the flexible member is in the bent state is the same as a height of the abutment when the flexible member is in the unfolded state.
The electronic device according to any one of claims 1 to 6, wherein when the flexible member is bent, the first connecting portion rotates about a first rotation axis.
The electronic device according to claim 7, wherein the first connecting portion abuts against the bendable portion at a first position when the flexible member is in the bent state, and the first connecting portion abuts against the bendable portion at a second position when the flexible member is in the unfolded state, and the first rotation axis is located on a perpendicular bisector of a line connecting the first position and the second position.
The electronic device of claim 7, wherein the flexible member further comprises a second connecting portion adjacent to the first connecting portion, the first connecting portion being located between the second connecting portion and the bendable portion.
The electronic device according to claim 9, wherein when the flexible member is bent, the second connecting portion and the first connecting portion have different bending angles.
The electronic device according to claim 9, wherein when the flexible member is bent, a bending angle of the second connecting portion is smaller than a bending angle of the first connecting portion.
The electronic device of claim 9, wherein the second connecting portion bends relative to the first connecting portion when the flexible screen is bent.
The electronic device according to claim 9, wherein the number of the first connecting portions and the number of the second connecting portions each include two, and when the flexible member is in the bent state, the two second connecting portions are parallel to each other, and the two first connecting portions are inclined to each other.
The electronic device of claim 9, wherein when the flexible member is bent, the second connecting portion rotates about a second rotational axis, the second rotational axis being offset from the first rotational axis.
The electronic device of claim 14, further comprising a support member coupled to the second coupling portion, the support member being rotatable about a second axis of rotation.
The electronic device of claim 15, wherein the supporting member is rotatable relative to the movable member when the flexible member is bent.
The electronic device of claim 15, wherein the movable member slides relative to the support member when the flexible member is bent.
The electronic device of claim 15, wherein a distance between the movable member and the support member decreases when the flexible member is bent.
The electronic device according to claim 15, wherein the movable member is pivotally connected to the supporting member via a third pivot axis, and when the flexible member is bent, the third pivot axis slides relative to the supporting member toward the supporting member.
The electronic device according to claim 15, wherein the supporting member is provided with a sliding block, and the movable member is connected with a guiding slide seat in sliding fit with the sliding block.
The electronic device of claim 15, wherein an elastic member is connected between the slider and the guiding and sliding seat, and the elastic member provides a tightening force for the supporting member to drive the second connecting portion away from the bendable portion.
The electronic device of claim 14, wherein the first rotational axis is a virtual axis and the second rotational axis is a solid axis.
The electronic device according to any one of claims 1 to 6, further comprising a hinge base, wherein the movable member is rotatably connected to the hinge base, and the movable member drives the first connecting portion to rotate around the hinge base.
The electronic device according to claim 23, wherein the hinge base includes a bearing bracket and a rotating wheel rotatably connected to the bearing bracket, and the movable member is fixedly connected to the rotating wheel and rotates with the rotating wheel relative to the bearing bracket.
The electronic device of claim 24, wherein the spindle base further comprises a damping transmission assembly coupled to the bearing bracket and the rotator wheel, the damping transmission assembly configured to provide rotational damping of rotation of the rotator wheel relative to the bearing bracket.
The electronic device according to any one of claims 1 to 6, wherein the length of the bendable portion when deployed is L, the radius of an arc formed by the bendable portion after bending is R, and the linear distance D between two opposite ends of the bendable portion after bending satisfies the following condition:
the electronic device of claim 26, wherein a linear distance D between the two opposite ends of the bendable portion after bending satisfies: