RACK TYPE ELECTRIC POWER STEERING APPARATUS

摘要

The present invention relates to a steering column of a vehicle. According to the present invention, the tensional force of a belt becomes higher as the distance between a motor shaft and a rack bar becomes larger because a second inclined portion of a support body passing through a guide hole is moved upwards along a first inclined portion to be inserted into a coupling recess, and accordingly, noise and damage to the belt can be prevented. If the support body is inserted into the coupling recess by a third inclined portion of a coupling recess and a motor housing is moved upwards, the tensional force of the belt becomes higher as the distance between the motor shaft and the rack bar becomes larger and, accordingly, noise and damage to the belt can be prevented.

主权项

1. A rack type electric power steering apparatus comprising:
a rack housing that surrounds a rack bar that is coupled to a driven pulley, has a through-hole through which a motor shaft of a motor coupled to a driving pulley passes, and has a guide hole that is spaced apart from the through-hole, and having a first inclined portion of which a cross-section in a direction in which the motor is coupled is changed; a motor housing to which the rack housing is coupled, on which the motor is mounted such that the motor shaft passes through the through-hole, and which has a coupling recess at a location corresponding to the guide hole; and a support body that passes through the guide hole to be coupled to the coupling recess and has a second inclined portion corresponding to the first inclined portion such that the driving pulley is moved away from the driven pulley when being coupled.