TELESCOPIC SHAFT AND STEERING SYSTEM

摘要

A telescopic shaft (1) includes an inner shaft (10), an outer shaft (20), a plurality of rolling bodies (30) that are disposed between recessed grooves (11, 21) of the inner shaft (10) and the outer shaft (20) and form a line in an axial direction (X), a stopper (41), and a buffer body (51). The stopper (41) restricts falling of the rolling bodies (30) from the recessed groove (11) of the inner shaft (10). The buffer body (51) is interposed between the stopper (41) and a rolling body (30e) at an end portion of the line. An end surface of the buffer body (51) includes an inclined abutment portion (51b) that is inclined with respect to a plane (P) perpendicular to an axis of the inner shaft (10). The abutment portion (51b) abuts against the rolling body (30e) at the end portion of the line at a stroke end of the inner shaft (10) with respect to the outer shaft (20).