Patent ID: 8444336
Filing Date: 2013-05-21
Classification: B43K,B43L

Abstract:
1. A lead cartridge adapted for storing leads and capable of being detachably connected to a lead feeding mechanism of a mechanical pencil to supply the leads one by one to the lead feeding mechanism, the mechanical pencil being provided with an interference part, the lead feeding mechanism a receiving part, the lead cartridge comprising: a tank part for storing the leads therein; a tip end connection part capable of being detachably fitted with the receiving part of the lead feeding mechanism; a lead port provided on a tip end side of the tank part to allow one of the leads in the tank part to pass therethrough from the tank part; and a swing cover arranged in the lead cartridge so as to be swingable between a closing position where the swing cover closes the lead port, and an opening position where the swing cover opens the lead port; wherein the swing cover is biased in a swing direction from the opening position to the closing position but is adapted to be swung from the closing position to the opening position by the interference part when the tip end connection part is fitted with the receiving part, and wherein, when the tip end connection part is fitted with the receiving part in a state where the lead feeding mechanism holds a lead, the swing cover is adapted to be swingable from the closing position to the opening position by the lead held by the lead feeding mechanism, in addition to thekin place by the interference part.