Rotating shaft device with variable torsion, electronic device and control method thereof

An electronic device, comprising:

• a first body;
• a second body;
• and
• a controller, wherein
• the first body and the second body are connected in a rotatable manner via a rotating shaft device comprising a driving component and a rotating component,
• the controller is configured to generate and send a first control instruction,
• the driving component is configured to adjust the rotating component in response to the first control instruction, such that a torsion force of the rotating component is switched to a second torsion force from a first torsion force, wherein the first torsion force is different from the second torsion force in magnitude, and
• the rotating shaft device further comprises:
• a first fixing member;
• a second fixing member sleeved on and connected to the first fixing member;
• and
• a third fixing member sleeved on and connected to the first fixing member and movably connected to the second fixing member, wherein
• the second fixing member comprises a position-limiting ring and a plurality of position-limiting grooves provided on an inner wall of the position-limiting ring,
• the third fixing member comprises a fixing shaft fixedly connected to the first fixing member, and a telescopic rod arranged on the fixing shaft,
• the driving component is configured to receive a control signal, and adjust the telescopic rod to extend out of the fixing shaft or retract into the fixing shaft based on the control signal,
• in the case that the telescopic rod extends out of the fixing shaft, an extending end of the telescopic rod engages in one of the plurality of position-limiting grooves, and the telescopic rod and the position-limiting ring are immobilized with respect to each other, and
• in the case that the telescopic rod retracts into the fixing shaft, the extending end of the telescopic rod disengages from the position-limiting ring, and the telescopic rod separates from the position-limiting ring.

An electronic device control method, applied on an electronic device having a first body, a second body and a controller, the first body and the second body are connected in a rotatable manner via a rotating shaft device the rotating shaft device including a driving component and a rotating component, a first fixing member and a second fixing member sleeved on and connected to the first fixing member, and a third fixing member sleeved on and connected to the first fixing member and movably connected to the second fixing member, the second fixing member including a position-limiting ring and a plurality of position-limiting grooves provided on an inner wall of the position-limiting ring, the third fixing member including a fixing shaft fixedly connected to the first fixing member, and a telescopic rod arranged on the fixing shaft the electronic device control method comprising:

• generating and sending a first control instruction by the controller;
• adjusting the rotating component by the driving component in response to the first control instruction, such that a torsion force of the rotating component is switched to a second torsion force from a first torsion force, wherein the first torsion force is different from the second torsion force in magnitude;
• receiving a control signal by the driving component;
• adjusting the telescopic rod to extend out of the fixing shaft or retract into the fixing shaft based on the control signal;
• in the case that the telescopic rod extends out of the fixing shaft, engaging an extending end of the telescopic rod to one of the plurality of position-limiting grooves, and immobilizing the telescopic rod and the position-limiting ring with respect to each other;
• and
• in the case that the telescopic rod retracts into the fixing shaft, disengaging the extending end of the telescopic rod from the position-limiting ring, and separating the telescopic rod from the position-limiting ring.