Parking driving mechanism

The invention discloses a parking driving mechanism. The parking driving mechanism is characterized by comprising a driving motor, a ball screw and a ball screw conical lug, a parking arm, a return torsional spring, an L-shaped lever arm and a parking gear; the driving motor is connected with the ball screw through a spline, the ball screw conical lug is arranged on the ball screw in a sleeving mode with a clearance, and the ball screw conical lug is used for driving the parking arm to be clamped in a groove; the return torsional spring is arranged on a fixing shaft of the parking arm in a sleeving mode with a clearance, one torsional spring arm is clamped in a notch of a shell, and the other torsional spring arm is buckled on the parking arm; and the L-shaped lever arm is arranged on a lever fixing shaft in a sleeving mode, and the parking gear is pressed on an output shaft through a spline. According to parking driving mechanism, a ball screw mechanism is used for replacing a traditional gear set parking dr