Patent ID: 8037782

Claim:
A steering column assembly comprising: an inner tube having an end being supported by a vehicle body, and rotatably and pivotally supporting a lower shaft therein; an outer tube having an end being supported by a clamp fixed to the vehicle body, rotatably and pivotally supporting an upper shaft therein, arranged in an outer periphery of the inner tube so as to be slidable in an axial direction so that a telescopic adjustment is possible, and having a through-hole opened in the axial direction in a portion overlapped with the inner tube; a distance bracket fixedly arranged in the outer tube; a clamp bolt including a shank rotatably and pivotally supported by the clamp and a long hole part formed in the distance bracket; an operation lever configured to rotate integrally with the clamp bolt; an eccentric cam arranged on the shank of the clamp bolt, and having an radial dimension gradually changing in a circumferential direction thereof; and a ring rotatably fitted on an outer periphery of the eccentric cam, wherein by rotationally operating the operation lever so as to rotate the eccentric cam and thus pressing the ring against the inner tube, so that the inner tube is pressure-contacted to and engaged with the outer tube.