Actuator and method of manufacturing the same
AssigneeHl Mando Corporation
InventorJaehyun Lee
Life of this patent
Estimating the term…
Abstract
An actuator may include a motor generating a rotational force, a gear assembly transmitting the rotational force of the motor, and a housing accommodating the gear assembly therein. The gear assembly includes a driving gear provided on a driving shaft of the motor, a first gear unit connected with the driving gear, and a second gear unit connected with the first gear unit to transmit the rotational force transmitted from the first gear unit to a power conversion unit, and the first gear unit includes a gear shaft, a first driven gear provided on one side of the gear shaft and meshed with the driving gear, a second driven gear provided on the other side of the gear shaft and meshed with the second gear unit, and a bearing provided on the gear shaft between the first driven gear and the second driven gear.
Claims19
An actuator comprising:
- a motor configured to generate a rotational force;
- a gear assembly configured to transmit the rotational force of the motor;
- and
- a housing accommodating the gear assembly therein,
- wherein:
- the gear assembly includes a driving gear provided on a driving shaft of the motor, a first gear unit rotatably connected with the driving gear, and a second gear unit rotatably connected with the first gear unit to transmit the rotational force transmitted from the first gear unit,
- the first gear unit includes a gear shaft, a first driven gear provided on one portion of the gear shaft and rotatably coupled with the driving gear provided on the driving shaft of the motor, a second driven gear provided on an other portion of the gear shaft and rotatably coupled with the second gear unit,
- the actuator further comprises a bearing positioned on the gear shaft of the first gear between the first driven gear and the second driven gear, and a support member coupled to an outer circumferential surface of the gear shaft of the first gear unit to support the bearing positioned between the first driven gear and the second driven gear, and
- wherein the bearing is press-fitted onto the gear shaft of the first gear unit.
A method of manufacturing an actuator, the method comprising:
- providing a motor configured to generate a rotational force;
- and
- providing a gear assembly, configured to transmit the rotational force of the motor, into a housing,
- wherein:
- the providing of the gear assembly includes providing a driving gear on a driving shaft of the motor, providing a helical gear rotatably coupled with the driving gear on one portion of a worm shaft, providing a worm gear on an other portion of the worm shaft, and providing a bearing on the worm shaft, and
- the providing of the bearing includes press-fitting the bearing onto an outer circumferential surface of the worm shaft between the helical gear and the worm gear,
- the method further comprises providing a clip member on the worm shaft to support the bearing after the press-fitting of the bearing onto the worm shaft.
Dependencies are inferred from the claim text.