| 摘要 |
PROBLEM TO BE SOLVED: To solve problems that mechanical pencils according to conventional techniques, when supplying a lead to a chuck body or a relaying member or the like provided on a front end of a lead tank, may require time in inserting the lead into a lead insertion hole because precise circle-shape formation of the lead insertion hole inhibits a writing lead from moving along a circumferential shape inner wall of the lead insertion hole to fall into the center of the lead insertion hole, therefore delaying feeding of the lead.SOLUTION: A mechanical pencil has a lead feeding mechanism arranged in a shaft tube thereof. The lead feeding mechanism comprises: a lead housing part for housing a plurality of leads; and a lead insertion hole in succession to the front end of the lead housing part, into which one writing lead can be inserted, where the inner diameter shape of the lead insertion hole is formed polygonally. |
