Abstract: A clutch actuator is configured to change operational force applied to a clutch in cases that a worm wheel is rotated by a motor. The clutch actuator may include a motor provided with a rotatable worm shaft, a screw thread formed along an exterior circumference of the worm shaft, a worm wheel provided with a worm gear engaging the screw thread, and a cam recess, an operation rod mounted to the worm wheel, the operation rod configured to engage or release a clutch, and a rotatable operation unit disposed within the cam recess, and configured to apply elastic force to the worm wheel. Methods of using the clutch actuator are also described.

Abstract: A clutch actuator assembly may include a motor provided with a rotatable worm shaft, a screw thread being formed at an exterior circumference of the worm shaft; a worm wheel having a disk shape, and provided with a worm gear engaged to the screw thread and first and second guiding holes; an operation unit mounted in the first and second guiding holes in order to move toward a radial direction of the worm wheel; and an upper body provided with a fork, and engaging or releasing a clutch by upward and downward movements of the fork corresponding to a movement of the operation unit.

Abstract: A clutch actuator is configured to change operational force applied to a clutch in cases that a worm wheel is rotated by a motor. The clutch actuator may include a motor provided with a rotatable worm shaft, a screw thread formed along an exterior circumference of the worm shaft, a worm wheel provided with a worm gear engaging the screw thread, and a cam recess, an operation rod mounted to the worm wheel, the operation rod configured to engage or release a clutch, and/or a rotatable operation unit disposed within the cam recess, and configured to apply elastic force to the worm wheel. Methods of using the clutch actuator are also described.

Abstract: An integrated steering gear and frame structure is designed to modularize a sub-frame as a suspension system and a steering gear as a steering system. Thus, a separate assembly process for the sub-frame and the steering gear is not required, so that a production process can be simplified and an assembly capability can be improved.

Abstract: An integrated steering gear and frame structure is designed to modularize a sub-frame as a suspension system and a steering gear as a steering system. Thus, a separate assembly process for the sub-frame and the steering gear is not required, so that a production process can be simplified and an assembly capability can be improved.