| 摘要 |
PROBLEM TO BE SOLVED: To provide high processing property and assembling property, to certainly perform fixing to an outer column or the like, and to smooth and stabilize a basic performance such as slidability in telescoping or collapsing. SOLUTION: A cylindrical iron-made bush B is engaged with at least one of the inner peripheral side of a lower column 1 (outer column) of an engagement part between both columns 1 and 2 and the outer peripheral side of an upper column 2 (inner column). Specifically, the cylindrical iron-made bush B is engaged with the inner peripheral surface of the lower column 1 (outer column), and the bush B has a collar section Ba folded back at an end of the lower column 1. COPYRIGHT: (C)2005,JPO&NCIPI |
