| 摘要 |
PURPOSE:To obtain a small-sized joint winding stem which is low in manufacture cost and has good attachment and detachment performance by providing a pipe-shaped joint member and a tip rod type joint member which is fitted in its internal-diameter part, and positioning them by recess and projection engagement by using a stop ring. CONSTITUTION:The joint member 11 which has a pipe-shaped part 11a atop and the tip rod type member 12a whose tip is fitted therein are provided. A tip projection part 11b is formed at the tip of the pipe-shaped part 11a and a recessed part 12b is formed at a position corresponding to the joint member 12 to perform mutual projection/recess engagement, controlling their positions in rotational directions. Further, a cut groove 11c is formed in the middle of the pipe-shaped part 11a and a circumferential groove 12c is formed in the intermediate part of the tip rod type part 12a; when the tip rod part 12a is inserted into the pipe-shaped 11a, the stop ring 13 is fitted in the cut groove 11c, thereby performing axial position control. |
