| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize the easy replenishment of a lead and exchange of the writing body of a ballpoint pen from a rear end by dismounting a rear shaft made detachably from a middle shaft in a multi-type writing utensil, in which a plurality of writing bodies such as those of a mechanical pencil or of the ballpoint pen. <P>SOLUTION: In the multi-type writing utensil, in which the tip part of each writing body can be selectively extended and retracted through the tip opening of a head shaft by rotating a cylindrical cam against the middle shaft and the rear shaft is detachably fixed en bloc to the rear part of the cylindrical cam, under the condition that the rear shaft is released from the middle shaft, a lead is made possible to be replenished to a lead pipe connecting with the writing body of the mechanical pencil from its rear end and further the writing body of the ballpoint pen is inserted in a receiving pipe connecting with a lead holder and, at the same time, the tip part of the writing body of the ballpoint pen can be held by the chuck of the lead holder. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
