| 摘要 |
<p>An automatic pencil includes an elongated tube (1) having an upper open end, a tapered lower end, and a central bore (13) formed therein. A plurality of leads (2) are received in the elongated tube (1). A guiding means (4) is mounted in the elongated tube (1) near the lower end (12) of the elongated tube (1) to prevent the leads (2) from moving upward. A propelling mechanism (3) is provided to force the leads (2) to enter the guiding means (4) and protrude from the lower end (12) of the elongated tube (1). The elongated tube (1) has a plurality of positioning grooves (14) axially formed around an inner surface thereof near the upper open end (11). The central bore (13) of the elongated tube (1) has a lower end (134) adjacent to the guiding means (4), and a plurality of receiving grooves (15) radially extending from the lower section (132) of the central bore for receiving the leads (2). Each of the receiving grooves (15) is aligned with a positioning groove (14) and has an upper end communicating with the upper section (131). <IMAGE></p> |
