| 摘要 |
PURPOSE:To flexibly retain to stop a writing unit receiver so as not to disturb the feeding of the unit by forming a retaining stop member for controlling the advancing of the writing piece receiver placed at the front side of the receiver as a cylinder having a slit formed obliquely to the axial direction at a rear edge. CONSTITUTION:A cylinder 1 formed as a retaining stop member placed at the front side of a writing piece receiver 14 is formed with small male threads 32 on the outer surface of its front end and with a plurality of slits 33 inclined to an axis at its rear edge at a predetermined interval. The threads 32 of the front end are engaged with female threads 7 of a threaded tube 8 fixed to a rear shaft 4 to be mounted. Even if the rear end of the cylinder 1 is brought into strong contact with the front end of the writing piece receiver 14 by slightly excessively clamping the cylinder 1, the pressure of the writing piece receiver 14 is alleviated by the elasticity of the rear end of the cylinder 1, and hence the flexible movement of the writing piece receiver 14 is assured. When the slits 33 are formed obliquely at the left side up directed toward the rear side, clamping is smoothed when the cylinder 1 is rotated clockwise to clamp the threads 32. |
