Patent ID: 6405612
Filing Date: 2002-06-18
Classification: B62D,Y10T

Abstract:
An electric steering column as comprising:a steering shaft; a jacket tube extending along the steering shaft to cover the same; a worm wheel rotatably held by said jacket tube, said worm wheel having a center bore through which a given portion of said steering shaft passes defining a given annular space therebetween; a collar member coaxially disposed on said given portion of said steering shaft to rotate together with said steering shaft, said collar member and said worm wheel defining therebetween an annular clearance; an elastically deformable structure put and compressed in said annular clearance in such a manner as to induce a rotation of said collar member and thus of said steering shaft when said worm wheel is rotated; and an electric motor that rotates said worm wheel with an electric power; in which said elastically deformable structure comprises O-rings that are made of an elastic material.