| 摘要 |
<p>PURPOSE:To prevent bending of coupling shaft upon collision by splitting the coupling shaft while preventing relative rotation through coupling section. CONSTITUTION:The rear shaft 19 is splitted into first and second shafts 25, 26 on same line where the front end section of second shaft 26 is inserted slidably into an insertion hole 25a while a small diameter section 26a having approximately rectangular cross-section is formed at the front end section. The portion surrounded by the small diameter section 26a and the innercircumferential face at the rear end section of first shaft 25 is the coupling chamber 28 where resin 29 is filled in the engaging holes 25b. In such a manner, a coupling section 27 for blocking the relative motion in the axial and rotary directions of said shafts 25, 26 while slides axially for the axial load higher than predetermined level is formed at the facing section of said shafts 25, 26.</p> |
