| 摘要 |
PURPOSE: To reduce the manufacturing cost of members by eliminating such necessity that the rigidity of each constituent member is especially increased. CONSTITUTION: A small cross-sectional area 39a and a pushing/pressing part 45 are arranged to a shaft 26 inserted inside a tube 25. A covering tube 27a exists around this small cross-sectional area 39a. A position in which the pushing/pressing part 45 is formed is regulated in such a way that one end edge of the covering tube 27a is positioned around the circumference of the small cross- sectional area 39a while this pushing/pressing part 45 is brought in contact with this covering tube 27a. Distancesα,β,γ, between respective constituent parts 45, 27a, 25, 34 is set toα+β<γ. |
