Patent ID: 6619421
Filing Date: 2003-09-16
Classification: B62D

Abstract:
An electric power steering device comprising:a steering shaft which rotates by operation of a steering wheel; a torque sensor which detects torque transmitted by the steering shaft; an electric actuator for generating steering assistance power, which is driven in response to the torque detected; a reduction gear mechanism which transmits the rotation of the actuator to said steering shaft; the reduction gear mechanism having a driven gear provided on the steering shaft and a driving gear which engages with the driven gear; said torque sensor being disposed between said steering wheel and said driven gear; a housing having a portion which covers said steering shaft between said steering wheel and said torque sensor, and a portion which covers the torque sensor, the housing being formed by plastically deforming a single metal pipe; a gear housing which covers said driving gear and said driven gear, the gear housing being integrated with one end of said housing, the one end of which is further away than the other end from the steering wheel; and an end cover which covers a portion of said steering shaft, the portion of which is further away than said driven gear from the steering wheel, the end cover being integrated with one end of said gear housing, the one end of which is further away than the other end from the steering wheel.