LEAD REPLACING DEVICE FOR PROPELLING PENCIL

摘要

A lead replacing device for a propelling pencil comprises a lead storage tube (3) used for storing bullet-shaped leads. A lead discharging head assembly used for keeping the bullet-shaped leads in the lead storage tube is arranged at one end of the lead storage tube. The lead discharging head assembly is connected to a unidirectional lead feed channel (21) of the propelling pencil in an inserted and matched mode, so that a bidirectionally opening lead feed structure that radially enlarges a necking-down assembly and opens an outlet of the lead storage tube is formed. The lead discharging head assembly that is matched with the unidirectional lead feed channel of the propelling pencil and allows unidirectional lead feeding is arranged on the lead storage tube, so the purpose that the lead is replaced conveniently without contact with the lead can be achieved merely by enabling the lead discharging head assembly to be matched with the unidirectional lead feed channel of the propelling pencil, and lead replacement is safer and more sanitary.