| 摘要 |
<p>PURPOSE:To reduce a number of parts by integrally forming a boss by forging and forming a positioning recessed part engaging a steering shaft fixing hole with an operation device positioning projecting part and also opening the positioning recessed part, on inner and outer periphery surfaces of the boss and slanting a side wall surface for joining with the inner and outer periphery surface to a diameter direction of the boss. CONSTITUTION:A boss 21 fixed with a steering wheel body is formed by forging of metal. A positioning recessed part 56 to which a positioning projecting part, 66 projecting from an operation device of a rotational indicator is integrally formed on a bottom part 55 of this boss 21. This positioning recessed part, 56 is opened on an inner periphery surface 50 and an outer periphery surface 60 of the boss 21 and also its side wall 61 is slanted extendingly toward the outer periphery surface 60 and integrally formed. Thereby, the positioning projecting part, 66 can be positioned without rattling.</p> |
