Steering shaft

摘要

A coupling and sliding section A3 is formed by an outer shaft A1 and an inner shaft A2 of a steering shaft A which is telescopically contractable in the axial direction during receipt of an impact. A resin material 5 is injected between a slid portion 4 of the inner shaft A2 and a sliding portion 2 of the outer shaft A1 through an opening 1a of the outer shaft A1, thereby forming a sliding resin portion 6. In addition, a fixing resin portion 6 is formed in the coupling and sliding section A3 at an appropriate interval from the sliding resin portion 6.