POWER STEERING DEVICE

摘要

PURPOSE:To form first and second oil paths using an economical work method by making the shape of at least one set of the first and second oil paths circular that comprise the oil path switching mechanism section of a pinion shaft. CONSTITUTION:A radial long groove 5d that inserts a bearing hole 5c and the flange 13a of a stub shaft 13 is provided at the one end side of a pinion shaft 5. At least one set of first and second oil paths 5f and 5g are opened and formed on the other end side end face 5b' of a head section 5b. The respective first and second oil paths 5f and 5g are arranged at the circumferential direction inserting one of supply paths 5e and 5e. The shape on the other end side end face 5b' of the pinion shaft 5 of these oil paths 5f and 5g is circular so as to enable work using economical work methods such as drill work an end mill work.