| 摘要 |
<p>In a mechanical pencil, although a variation of the diameter of the lead is permitted within a certain range, if lead of maximum diameter should be used, the pencil sometimes fails to propel. This is because the elastic deformation of a thin elastic film that is a lead holding member has surpassed its allowable range. The invention is a mechanical pencil provided with a lead holding member in the vicinity of the tip of the barrel, wherein the outer shape of the lead holding member is somewhat smaller than the inner shape of the barrel in which the lead holding member is installed, and an inner surface step is disposed forwardly of the lead holding member to prevent the lead holding member from falling off the barrel. This arrangement ensures reliable holding of the lead and satisfactory propelling of the lead.</p> |
