Electronic device

1. An electronic device, comprising:

a housing comprising a first portion and a second portion configured to move relative to each other, wherein the first portion defines an accommodating chamber therein;

a reel rotatably arranged to the first portion, wherein the reel is arranged in the accommodating chamber;

a flexible display screen assembly having an end connected to the second portion and another end coupled to the reel, wherein the reel is configured to rotate to release the flexible display screen assembly when the first portion and the second portion move away from each other, and wherein a part of the flexible display screen is arranged in the accommodating chamber; and

a cover body comprising a first connecting part and a second connecting part movable relative to the first connecting part, wherein the cover body is connected with the first portion and covers the accommodating chamber, wherein the first connecting part is fixedly connected with the first portion, and wherein the second connecting part is fixedly connected with the second portion,

wherein a display portion of the flexible display screen assembly is configured to be expanded when the first portion and the second portion move away from each other, and wherein the expanded display portion of the flexible display screen assembly is configured to be received in the accommodating chamber when the first portion and the second portion move towards each other.

2. The electronic device according to claim 1 , wherein the reel is further configured to rotate to wind the flexible display screen assembly when the first portion and the second portion move towards each other.

3. The electronic device according to claim 1 , further comprising a driving mechanism, wherein the driving mechanism is connected with the second portion and configured to drive the second portion to move away from the first portion to drive the flexible display screen assembly to move.

4. The electronic device according to claim 3 , wherein the driving mechanism comprises a motor and a first transmission structure connected with the motor and the second portion, and the motor is configured to drive the second portion to move relative to the first portion by the first transmission structure.

5. The electronic device according to claim 4 , wherein the first transmission structure comprises:

a first transmission gear connected with the motor; and

a rack part fixed to the second portion and meshed with the first transmission gear.

6. The electronic device according to claim 5 , wherein the driving mechanism comprises a second transmission structure connected with the reel and the first transmission gear, and the motor is configured to drive the reel to rotate to release the flexible display screen assembly through the second transmission structure while driving the second portion to move away from the first portion.

7. The electronic device according to claim 6 , wherein the second transmission structure comprises:

a second transmission gear fixed to the reel and concentric with the reel; and

a third transmission gear rotatably arranged to the first portion, and meshed with the second transmission gear and the first transmission gear.

8. The electronic device according to claim 1 , wherein the flexible display screen assembly comprises a flexible display screen and a flexible support stacked and fixedly connected with the flexible display screen, the flexible support is connected with the reel, and the flexible support abuts against the first portion to keep the flexible display screen flat when the first portion and the second portion move away from each other.

9. The electronic device according to claim 8 , wherein the first portion comprises a first top plate, and the flexible support is configured to be arranged between the flexible display screen and the first top plate to fill a gap between the flexible display screen and the first top plate when the first portion and the second portion move away from each other.

10. The electronic device according to claim 9 , wherein the second portion comprises a second top plate attached on the first top plate and arranged between the flexible display screen and the first top plate.

11. The electronic device according to claim 10 , wherein the flexible display screen comprises:

a first region fixed on the second top plate and overlapping the second top plate; and

a second region connected to the first region and at least partially arranged in the first portion.

12. The electronic device according to claim 11 , wherein the flexible support is arranged to a bottom of the second region and exceeds beyond the second region, and an exceeding portion of the flexible support is connected to the reel.

13. The electronic device according to claim 1 , further comprising a position limiting structure, wherein the position limiting structure is arranged to the housing and configured to prevent the reel from rotating when the second portion moves to a predetermined position relative to the first portion.

14. The electronic device according to claim 13 , wherein the position limiting structure comprises:

a position limiting block provided to one of the first portion and the second portion; and

a position limiting groove formed in the other one of the first portion and the second portion,

wherein the position limiting block is configured to be engaged in the position limiting groove when the second portion moves to the predetermined position relative to the first portion.

15. The electronic device according to claim 1 , further comprising a camera arranged in the accommodating chamber of the first portion,

the cover body comprises a light transmitting part corresponding to the camera, and the camera is configured to acquire images through light transmitting part.

16. An electronic device, comprising:

a housing comprising a first portion and a second portion connected to each other and slidable relative to each other;

a reel arranged in the first portion;

a flexible display screen assembly having a first end fixed to the second portion and a second end coupled to the reel, wherein the electronic device has a narrow screen mode in which a part of the flexible display screen assembly is wound on the reel, and an expanded mode in which the part of the flexible display screen assembly is exposed between the first portion and the second portion; and

a position limiting structure arranged to the housing and configured to prevent the reel from rotating when the second portion moves to a predetermined position relative to the first portion, wherein the position limiting structure comprises a position limiting block provided to one of the first portion and the second portion and a position limiting groove formed in the other one of the first portion and the second portion, wherein the position limiting block is configured to be engaged in the position limiting groove when the second portion moves to the predetermined position relative to the first portion.

17. The electronic device according to claim 16 , wherein the reel is configured to rotate in a first direction to wind the part of the flexible display screen assembly when the first portion and the second portion move towards each other, and to rotate in a second direction to release the part of the flexible display screen assembly when the first portion and the second portion move away from each other, in which the second direction is opposite to the first direction.

18. An electronic device, comprising:

a housing comprising a first portion, a second portion, and a third portion, the first portion and the second portion being arranged to both sides of the third portion, respectively, and the first portion and the second portion being configured to move relative to the third portion;

a first reel arranged in the first portion and a second reel arranged in the second portion;

a flexible display screen assembly having a first end wound on the first reel and a second end wound on the second reel, wherein at least corresponding one of the first reel and the second reel arranged in at least one of the first portion and the second portion is configured to rotate to release the flexible display screen assembly when the at least one of the first portion and the second portion moves away from the third portion; and

a driving mechanism connected with the at least one of the first portion and the second portion and configured to drive the at least one of the first portion and the second portion to move away from the third portion to drive the flexible display screen assembly to move, wherein the driving mechanism comprises a motor and a first transmission structure connected with the motor and the at least one of the first portion and the second portion, and wherein the motor is configured to drive the at least one of the first portion and the second portion to move relative to the third portion by the first transmission structure,

wherein the first transmission structure comprises a first transmission gear connected with the motor and a rack part fixed to the at least one of the first portion and the second portion and meshed with the first transmission gear,

wherein the driving mechanism comprises a second transmission structure connected with the at least corresponding one of the first reel and the second reel and the first transmission gear, and wherein the motor is configured to drive the at least corresponding one of the first reel and the second reel to rotate to release the flexible display screen assembly through the second transmission structure while driving the at least one of the first portion and the second portion to move away from the third portion,

wherein the second transmission structure comprises a second transmission gear fixed to the at least corresponding one of the first reel and the second reel and concentric with the at least corresponding one of the first reel and the second reel and a third transmission gear rotatably arranged to the third portion and meshed with the second transmission gear and the first transmission gear.