| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve operational feeling when rotating a writing core by making the axial shaking in the writing not easy to feel. <P>SOLUTION: A mechanical pencil includes: a writing core feeding mechanism 40 which holds and feeds a writing core x in front of the shaft tube; a pressure part 10a1 provided at a peripheral wall of a shaft tube 10 to move to the centripetal direction by the pressure from the centrifugal direction; and a rotator 20 which is provided in the shaft tube rotatably and movably in the back and forth direction. The writing core feeding mechanism 40 is provided inside the rotator 20 to interlock to the rotator 20 to rotate, and when the pressure part 10a1 moves to the centripetal direction, the moving pressure part 10a1 is engaged with the rotator 20 and moves the rotator 20 forward or backward, and the rotator 20 is made to be integrally engaged with the shaft tube 10 to rotate. <P>COPYRIGHT: (C)2013,JPO&INPIT |
