| 摘要 |
<p>PROBLEM TO BE SOLVED: To attach an end grip tip without any space by forming a projection at a space existing at assembling a shaft and an end tip to a grip between an interior side of an end tip hole bottom section of a shaft and an end tip. SOLUTION: A projection 6 is provided at an interior side of an end tip bole bottom section 4 of a grip 7 between an attached end tip 11 and a shaft 2. A flat shape of this projection 6 is preferably formed into a ring shape, or a block shape having radial cuts or the like. At this time as long as the projection 6 does not disturb attachments of the end tip 11 and the shaft 2, the projection 6 is preferably provided at full space between a tip section of the end tip 11 and the shaft 2 from the view point of rigidity improvement of the end tip hole bottom section 4. The end tip hole bottom section 4 is hard to be depressed when the section 4 is pushed by the tip section of the end tip 11 thereby and the end tip 11 can be tightly fixed after attaching it.</p> |
