| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable sharpening of a lead with light operation without rotating a mechanical pencil which includes a lead sharpener so as to be able to sharpen the tip of the lead.SOLUTION: A slide sleeve 14 is provided inside a barrel 1 in a movable and unrotatable manner in an axial direction. Inside this slide sleeve, a screw cylinder 24 holding a mechanical part is provided rotatably, and movably in the axial direction with the barrel. A screw part for rotating the screw cylinder is provided between the slide sleeve 14 and the screw cylinder 24. A knock lead sharpener 45 is detachably attached to the rear end of a lead tank 37, and a sharpening tooth 59 is provided inside the tank in a movable and unrotatable manner in the axial direction.</p> |
