Steering column of vehicle having collision energy absorbing apparatus

1 . A steering column of a vehicle having a collision energy absorbing apparatus, the steering column comprising:

a hollow tube having a steering shaft disposed in the hollow tube;

a plate bracket surrounding an outer peripheral surface of the tube and having guide grooves formed on a top part of the plate bracket;

a reinforcing member for reinforcing and supporting the plate bracket, the reinforcing member being coupled to the tube and being provided within the plate bracket; and

a mounting bracket having impact-absorbing guide members inserted in the guide grooves and fixing holes formed on both sides of the mounting bracket for fixing the mounting bracket to a chassis.

2 . The steering column as claimed in claim 1 , further comprising a bent member having a first end fixed to the mounting bracket and a second end provided between the plate bracket and the reinforcing member, the bent member being unbent when a vehicle crashes against an object.

3 . The steering column as claimed in claim 2 , wherein the mounting bracket has a bent member holding hole for holding the bent member, the bent member has a bent member holding head formed at the first end of the bent member, and the bent member holding head is fitted in the bent member holding hole.

4 . The steering column as claimed in claim 1 , wherein the impact-absorbing guide member has impact-absorbing guide protuberances formed on both sides of the impact-absorbing guide member and the guide grooves has protuberance receiving seats formed inside, the impact-absorbing guide protuberances extending outward and being inserted in the guide grooves.

5 . The steering column as claimed in claim 4 , wherein each of the impact-absorbing guide protuberances and the protuberance receiving seats has one of a circular shape, an oval shape, a hemispherical shape, and a polygonal shape.