| 摘要 |
PURPOSE:To simplify an eraser feed mechanism and thereby cut a manufacturing cost. CONSTITUTION:This multiple writing tool is composed of a spiral cylinder 19, a collar part 25 which comes into contact with the front end of the spiral cylinder 19, and an inner cylinder 23 with an engagement part 35 which becomes engaged with the rear end of a cylinder cam 13 in a freely detachable manner, forward of the collar, and prevents itself from slipping off but rotates against the spiral cylinder. In addition, the tool has a slit part 28 formed running through to the rear end, behind the inner cylinder 23, and a slider 30 with a protrusion 32 provided on the lateral facing of the slit part 28 for holding an eraser 38. The protrusion runs through the slit part and becomes engaged with a spiral groove 20. Thus the protrusion is guided by the slit part to slide in the axial direction of the slider by rotating the rear end part of the spiral cylinder against a cap, and the eraser pops up from the rear end of the inner cylinder. |
