Patent ID: 7490855
Filing Date: 2009-02-17
Classification: B62D,F16F

Abstract:
1. A shock-absorption steering device comprising: a steering shaft connected to a steering wheel; a column housing for housing and supporting the steering shaft so as to be rotatable; the steering shaft and the column housing making a telescopic movement in an axial direction of the steering shaft in order to absorb an impact energy; the column housing including a first tube formed in a tube shape and a second tube formed in a tube shape and partially fitted within the first tube; a first tube portion formed at the second tube in a manner where it has an external diameter that is approximately identical to an internal diameter of the first tube so that the second tube fits into the first tube at the first tube portion; a second tube portion formed at the second tube in a manner where it has an external diameter that is smaller than the external diameter of the first tube portion formed on the second tube so that a space is formed between the first tube and the second tube; a plate formed so as to extend in a longitudinal direction of the column housing from the side of the outer surface of the first tube toward the side of the steering wheel; and one end portion of the plate at the side of the steering wheel being bent so as to be formed in an approximately U-shape and fixed to the second tube portion of the second tube; the other end of the plate not being fixed; and the plate pulled into the space formed between the first tube and the second tube by a predetermined bending load on the basis of a movement of the second tube sliding within the first tube.