| 摘要 |
<P>PROBLEM TO BE SOLVED: To slacken the dimensional precision demanded on members for pressurizing ink in a refill and to improve assembling properties of these members and the reliability of sealing surfaces for pressurizing the ink in the refill. <P>SOLUTION: In a ballpoint pen wherein the ink in the refill 3 is pressurized when a pressurizing/knocking member 7 is depressed to the fore end side and the pressurization of the ink in the refill 3 is canceled when the pressurizing/knocking member 7 is returned to the rear end side, the pressurizing/knocking member 7 is disposed on the rear end side of the rear end part 3b of the refill 3, and a sealing member 6 which has a first inner peripheral surface 6a for forming a first sealing surface in cooperation with the outer peripheral surface of the rear end part 3b of the refill 3 and a seat surface 6b for forming a second sealing surface in cooperation with the end face 7c of the fore end of the pressurizing/knocking member 7, is disposed on the rear end part 3b of the refill 3. <P>COPYRIGHT: (C)2007,JPO&INPIT |
