US Patent 12104420 Vehicle hinge driving apparatus

An embodiment vehicle hinge driving apparatus includes an actuator, a housing connected to the actuator, an output shaft rotatably mounted in the housing, and a transmission mechanism including a plurality of gear sets configured to transmit a torque from the actuator to the output shaft, wherein the plurality of gear sets includes a proximal gear set close to the actuator, a first distal gear set operatively connected to the proximal gear set, and a second distal gear set operatively connected to the first distal gear set, wherein the second distal gear set is detachably mounted and configured to respond to a required output torque, and wherein the output shaft is connected to the first distal gear set or the second distal gear set.