Rotation shaft assembly, electronic apparatus, and rotation method

1 . A rotation shaft assembly for connecting a first body and a second body and enabling the first body and the second body to rotate relative to each other, comprising:

a connector;

a first rotation shaft rotatably connected to the connector;

a second rotation shaft rotatably connected to the connector; and

a lock mechanism arranged between the first rotation shaft and the second rotation shaft and configured to switch between a rotation of the first rotation shaft and a rotation of the second rotation shaft when an angle of relative rotation between the first body and the second body is in a first predetermined state or a second predetermined state, the angle of relative rotation passing through the first predetermined state and the second predetermined state, respectively, as the angle of relative rotation changes from an initial state to an end state, in response to the angle of relative rotation being in the first predetermined state while proceeding toward the end state, the rotation of the first rotation shaft transitioning to being unlocked, and the rotation of the second rotation shaft transitioning to being locked, and in response to the angle of relative rotation being in the second predetermined state while proceeding toward the end state, the rotation of the first rotation shaft transitioning to being locked, and the rotation of the second rotation shaft transitioning to being unlocked, wherein the lock mechanism includes a lock member configured, in response to the first rotation shaft being rotated, to move in an axial direction of the first rotation shaft, the lock member including a guide member extending in the axial direction of the first rotation shaft, the connector including a guide hole arranged corresponding to the guide member, and the guide member extending slidably into the guide hole such that the lock member is constrained against rotation relative to the connector while moving in the axial direction of the first rotation shaft.

2 . The rotation shaft assembly of claim 1 , wherein

in response to the first rotation shaft being rotated, the lock member being moved in the axial direction of the first rotation shaft to a lock position or an unlock position;

in response to the lock member being at the lock position, an end of the lock member cooperating with the second rotation shaft to lock relative rotation between the end of the lock member and the second rotation shaft in response to the angle of relative rotation being in the first predetermined state while proceeding toward the end state; and

in response to the lock member being at the unlock position, the end of the lock member cooperating with the second rotation shaft to unlock relative rotation between the connector and the second rotation shaft in response to the angle of relative rotation being in the second predetermined state while proceeding toward the end state.

3 . The rotation shaft assembly of claim 2 , wherein the lock mechanism further includes:

a stopper member:

in response to the lock member being moved to the lock position in the axial direction of the first rotation shaft, the end of the lock member abutting against an end of the stopper member to lock the relative rotation between the connector and the second rotation shaft; and

in response to the lock member being moved to the unlock position in the axial direction of the first rotation shaft, the end of the lock member being staggered away from the end of the stopper member to unlock the relative rotation between the connector and the second rotation shaft.

4 . The rotation shaft assembly of claim 3 , wherein the lock member is spirally connected to the first rotation shaft.

5 . The rotation shaft assembly of claim 4 , wherein:

a spiral guide groove is arranged at an outer side of the first rotation shaft;

the spiral guide groove extends along the axial direction of the first rotation shaft; and

an end of the lock member close to the first rotation shaft cooperating with the spiral guide groove.

6 . The rotation shaft assembly of claim 2 , wherein the lock member includes:

a lock body extending in a radial direction of the first rotation shaft.

7 . The rotation shaft assembly of claim 2 , wherein the lock member includes:

a connection cylinder, the first rotation shaft passing through the connection cylinder and cooperating with a thread of the connection cylinder; and

a lock part fixedly connected to the connection cylinder.

8 . The rotation shaft assembly of claim 1 , wherein the lock mechanism further includes a block member fixed at the first rotation shaft, in response to the angle of relative rotation being in the second predetermined state while proceeding toward the end state, the block member and the connector cooperating to lock the rotation of the connector and the first rotation shaft.

9 . The rotation shaft assembly according to claim 1 , wherein the angle of relative rotation changes from the initial state to the end state through a combination of a) the first rotation shaft rotating in a single first direction while the second rotation shaft being locked and b) the second rotation shaft rotating in a single second direction opposite of the first direction while the first rotation shaft being locked.

10 . The rotation shaft assembly according to claim 1 , wherein the initial state corresponds to the angle of relative rotation between the first body and the second body being at 0°, and the end state corresponds to the angle of relative rotation between the first body and the second body being at 360°.

11 . The rotation shaft assembly according to claim 1 , wherein the first rotation shaft is locked and the second rotation shaft is unlocked before the angle of relative rotation reaches the first predetermined state or after the angle of relative rotation passes the second predetermined state, and the first rotation shaft is unlocked and the second rotation shaft is locked when the angle of relative rotation is between the first predetermined state and the second predetermined state.

12 . An electronic apparatus, comprising:

a first body;

a second body; and

a rotation shaft assembly for connecting the first body and the second body and enabling the first body and the second body to rotate relative to each other, including:

a connector;

a first rotation shaft rotatably connected to the connector;

a second rotation shaft rotatably connected to the connector; and

a lock mechanism arranged between the first rotation shaft and the second rotation shaft and configured to switch between a rotation of the first rotation shaft and a rotation of the second rotation shaft when an angle of relative rotation between the first body and the second body is in a first predetermined state or a second predetermined state, the angle of relative rotation passing through the first predetermined state and the second predetermined state, respectively, as the angle of relative rotation changes from an initial state to an end state, in response to the angle of relative rotation being in the first predetermined state while proceeding toward the end state, the rotation of the first rotation shaft transitioning to being unlocked, and the rotation of the second rotation shaft transitioning to being locked, and in response to the angle of relative rotation being in the second predetermined state while proceeding toward the end state, the rotation of the first rotation shaft transitioning to being locked, and the rotation of the second rotation shaft transitioning to being unlocked,

wherein the lock mechanism includes a lock member configured, in response to the first rotation shaft being rotated, to move in an axial direction of the first rotation shaft, the lock member including a guide member extending in the axial direction of the first rotation shaft, the connector including a guide hole arranged corresponding to the guide member, and the guide member extending slidably into the guide hole such that the lock member is constrained against rotation relative to the connector while moving in the axial direction of the first rotation shaft.

13 . The electronic apparatus of claim 12 , wherein

in response to the first rotation shaft being rotated, the lock member being moved in the axial direction of the first rotation shaft to a lock position or an unlock position;

in response to the lock member being at the lock position, an end of the lock member cooperating with the second rotation shaft to lock relative rotation between the end of the lock member and the second rotation shaft in response to the angle of relative rotation being in the first predetermined state while proceeding toward the end state; and

in response to the lock member being at the unlock position, the end of the lock member cooperating with the second rotation shaft to unlock relative rotation between the connector and the second rotation shaft in response to the angle of relative rotation being in the second predetermined state while proceeding toward the end state.

14 . The electronic apparatus of claim 13 , wherein the lock mechanism further includes:

a stopper member:

in response to the lock member being moved to the lock position in the axial direction of the first rotation shaft, the end of the lock member abutting against an end of the stopper member to lock the relative rotation between the connector and the second rotation shaft; and

in response to the lock member being moved to the unlock position in the axial direction of the first rotation shaft, the end of the lock member being staggered away from the end of the stopper member to unlock the relative rotation between the connector and the second rotation shaft.

15 . The electronic apparatus of claim 14 , wherein the lock member is spirally connected to the first rotation shaft.

16 . The electronic apparatus of claim 15 , wherein:

a spiral guide groove is arranged at an outer side of the first rotation shaft;

the spiral guide groove extends along the axial direction of the first rotation shaft; and

an end of the lock member close to the first rotation shaft cooperating with the spiral guide groove.

17 . The electronic apparatus of claim 13 , wherein the lock member includes:

a lock body extending in a radial direction of the first rotation shaft.

18 . The electronic apparatus of claim 13 , wherein the lock member includes:

a connection cylinder, the first rotation shaft passing through the connection cylinder and cooperating with a thread of the connection cylinder; and

a lock part fixedly connected to the connection cylinder.

19 . The electronic apparatus of claim 12 , wherein the lock mechanism further includes a block member fixed at the first rotation shaft, in response to the angle of relative rotation being in the second predetermined state while proceeding toward the end state, the block member and the connector cooperating to lock the rotation of the connector and the first rotation shaft.

20 . A rotation method of an electronic apparatus, comprising:

performing a rotation operation on a first body or a second body of the electronic apparatus through a rotation of a first rotation shaft and a rotation of a second rotation shaft, the first rotation shaft and the second rotation shaft not being capable of rotating simultaneously relative to a connector connected to the first rotation shaft and the second rotation shaft, an angle of relative rotation between the first body and the second body of the electronic apparatus passing through a first predetermined state and a second predetermined state, respectively, as the angle of relative rotation changes from an initial state to an end state;

in response to the first rotation shaft being rotated, moving a lock member in an axial direction of the first rotation shaft while constraining the lock member against rotation relative to the connector by sliding a guide member of the lock member in a guide hole of the connector;

in response to the first body or the second body of the electronic apparatus being rotated such that the angle of relative rotation reaches the first predetermined state while proceeding toward the end state, unlocking the rotation of the first rotation shaft, and locking the rotation of the second rotation shaft; and

in response to the first body or the second body of the electronic apparatus being rotated such that the angle of relative rotation reaches the second predetermined state while proceeding toward the end state, locking the rotation of the first rotation shaft, and unlocking the rotation of the second rotation shaft to rotate the body of the electronic apparatus around the second rotation shaft.