| 摘要 |
An automatic-pencil cartridge includes a lead automatic compensation device which is in the front section of the cartridge and which can be triggered to automatically output the lead for further writing when the lead is worn out and unsuitable for writing; a lead holder which is in the middle section of the cartridge and which can ensure that the lead is delivered only to the exit of the cartridge; a lead-storing device, which is in the back section of the cartridge and which can be used to store lead and to open the lead holder; a cup device, used to enclose the lead automatic compensation device and the lead holder with a retainer. The lead-storing device can be arranged in one end of the cup device.
|
