| 摘要 |
PURPOSE:To provide the title writing utensil withstanding long-term use without utilizing elasticity in a clip part and a knock part and made certain and easy in the engagement and disengagement of a projection and a protruding and receiving hole. CONSTITUTION:A clip part 4 and a knock part 5 are connected and a protruding and receiving hole respectively holding the protruding and receiving states of a pen point 2A by the lever motion generated around the fulcrum 10 provided to the knock part 5 is engaged with and detached from a projection 9. By this constitution, long-term use is made possible and the engagement and disengagement of the projection 9 and the protruding and receiving hole can be certainly made easy. |
