| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a shake-out type mechanical pencil the weight body 12 of which wound with a coiled wire and composed of coil springs 12B, 12D in the front part 12A and the rear part 12C, respectively, can be slid in the longitudinal direction while the contact sound of the weight body 12 is suppressed. <P>SOLUTION: A chuck 1 is advanced by the inertial force of the weight body 12, and then, a core 3 is drawn out. A large diameter part 12E closely coiled by a wire is provided between the front part 12A and the rear part 12C of the weight body 12, and the outside diameter of the large diameter part 12E is made to be larger than diameters of the front part 12A and the rear part 12C. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
