Knob selector locking and return gear system

The utility model discloses a knob selector locking and return gear system, the rotation locking dish is connected in the bottom plate of base through locking dish screw thread, the rotation locking dish is built -in to have a plurality of sets of teeth, forms the spacing groove between the adjacent dish tooth. The body coaxial coupling of knob ring and rotation locking dish, the locking -lever isorganized the transmission with locking drive gear and is connected, the drive motor is organized the transmission with locking drive gear and is connected, the drive motor passes through locking drive gear group drive locking -lever up time needle or anticlockwise motion, makes the one end tip embedding of locking -lever perhaps breaks away from the spacing groove. The drive motor with be connected from the transmission of return gear train, realize to keep off that the position is switched and the basis of locking on, self return after can realizing shifting prevents potential safety hazards such as smooth car. 本实用