Patent ID: 11926372
Assignee: HYUNDAI MOTOR COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A motor-driven power steering system for a vehicle, the motor-driven power steering system comprising:
a housing;
a worm shaft engaged with a worm wheel coupled to a steering shaft, wherein the worm shaft is received in the housing, and rotated by power received from a motor; and
a bearing-integrated damper bush fitted onto an external circumferential surface of a first end portion of the worm shaft, supported by the housing, so as to prevent movement of the worm shaft and a clearance caused by backlash between the worm wheel and the worm shaft,
wherein a lubricant collecting portion is formed in the housing,
wherein the lubricant collecting portion is filled with a lubricant, and
wherein the first end portion of the worm shaft, together with the bearing-integrated damper bush, is provided to be immersed in the lubricant.