Parking stall lock motor protection device

The utility model provides a parking stall lock motor protection device, the final drive shaft that is connected including one end and swing arm and overlap in the sleeve of the final drive shaft other end, the sleeve with the final drive shaft link radially is equipped with the screw hole, final drive shaft with muffjoint end be equipped with with the corresponding semicircular groove of threadedhole position, threaded hole installs the marble screw. This parking stall lock motor protection device utilizes muffjoint drive shaft and final drive shaft, the semicircular groove cooperation of the steel ball packing force of marble screw itself and transmission shaft down, it is rotatory to drive final drive shaft down in the normal drive of motor, when the motor is static, when external force leads to the final drive shaft rotation, utilizes the characteristic to avoid electrical drive shaft rotation of marble screw to play protection motor drive part and do not harm under the conditionthat external force is str