| 摘要 |
PROBLEM TO BE SOLVED: To provide a tip for ballpoint pen, in which the length of a ball housing can be shortened compared with a conventional ball housing and the working of the same is facilitated whereby the tip can be supplied inexpensively. SOLUTION: The tip is characterized in that a tip end side inserting unit 7, having a ball holder 2, in which the diameter of the tip end part of the same is reduced is fitted into the ball housing 1, retaining a ball 3 by caulking at the tip end part of the same. |
