Torque vectoring device

A torque vectoring device, comprising:

• an input member to which a torque is delivered from a prime mover;
• a first driveshaft and a second driveshaft extending coaxially while being allowed to rotate relatively to each other;
• a differential mechanism that distributes the torque delivered to the input member to the first driveshaft and the second driveshaft, and that allows the first driveshaft and the second driveshaft to rotate at different speeds;
• an actuator that applies a control torque to the differential mechanism to rotate the first driveshaft and the second driveshaft at different speeds;
• and
• a reversing mechanism that allows the first driveshaft and the second driveshaft to rotate in opposite directions when the first driveshaft and the second driveshaft rotate at different speeds,
• wherein the differential mechanism comprises a first power transmission gear set and a second power transmission gear set arranged coaxially while being opposed to each other,
• the first power transmission gear set comprises:
• a power input element to which the torque is delivered from the input member;
• a first power output element which delivers the torque to the first driveshaft;
• and
• a first differential reaction element to which the control torque is applied as a reaction force against the torque delivered from the power input element to the first power output element,
• the second power transmission gear set comprises:
• the power input element;
• a second power output element which delivers the torque to the second driveshaft;
• and
• a second differential reaction element to which the control torque is applied as a reaction force against the torque delivered from the power input element to the second power output element,
• the reversing mechanism comprises:
• a first control gear set that is arranged coaxially around the first driveshaft and the second driveshaft to transmit the control torque to the first driveshaft through the first differential reaction element;
• and
• a second control gear set that is arranged coaxially around the first driveshaft and the second driveshaft to transmit the control torque to the second driveshaft through the second differential reaction element,
• the first control gear set comprises:
• a control input element to which the control torque of the actuator is applied;
• a first control output element which delivers the control torque to the first driveshaft;
• a first planetary gear to which the control torque is delivered from the control input element;
• and
• a first gear that engages with the first planetary gear to serve as the control input element or the first control output element,
• the second control gear set comprises:
• the control input element;
• a second control output element which delivers the control torque to the second driveshaft;
• a second planetary gear which is arranged coaxially with the first planetary gear, and to which the control torque is delivered from the control input element;
• and
• a second gear that engages with the second planetary gear to serve as the control input element or the second control output element,
• a first gear train includes the first planetary gear and the first gear,
• a second gear train includes the second planetary gear and the second gear, and
• a gear ratio of the first gear train and a gear ratio of the second gear train are different from each other.