| 摘要 |
PROBLEM TO BE SOLVED: To provide a knock type writing instrument capable of preventing a rotor from longitudinally largely moving, and capable of also comparatively freely designing a shape in a shaft cylinder.SOLUTION: An inner cylinder 6 is provided on an outer periphery of a rotor 53 and a refill 3 separately from a shaft cylinder 2, and a longitudinal notch and a lateral notch being a circumferential directional notch provided continuously with the longitudinal notch, are provided in an axial direction on a lower end of the inner cylinder 6, and a projection is formed on an outer periphery of a tongue piece formed of the longitudinal notch and the lateral notch. The projection touches the shaft cylinder 2, so that the tongue piece deflects, and the rotor 53 hitches on the tongue piece, so that a longitudinal movement of the rotor 53 is limited.SELECTED DRAWING: Figure 1 |
