Prevent fall out step drive arrangement

The utility model provides a prevent fall out step drive arrangement, includes reduction gear and motor. The output tooth of reduction gear corresponds the cooperation with the output shaft of motor,when the output tooth rotates, drives the output shaft and rotates, still be equipped with the position detecting device who is used for the response to export the turned position of tooth on the reduction gear to correspond the turned position who obtains the output shaft. The utility model discloses prevent fall out step drive arrangement's position detecting device sets up the turned angle thatcan directly obtain to export the tooth, promotes the turned angle precision of the output tooth that acquires, in addition, can reach the actual turned position of output shaft to whether fall out step of motor is detected to rotation angle and exact position that can the determine output axle. 种防失步驱动装置，包括减速器和电机。减速器的输出齿与电机的输出轴对应配合，在输出齿转动时，带动输出轴转动；减速器上还设有用于感应输出齿的转动位置的位置检测装置，以对应获得输出轴的转动位置。本实用新型防失步驱动装置的位置检测装置的设置可以直接获得输出齿的转动