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1. An ink cartridge device comprising an ink cartridge that is adapted to be resiliently supported inside a pen barrel, wherein the ink cartridge is fit to an ink cartridge bar that has an upper end to which a connection bar is mounted, the connection bar having a fitting portion bar that is coupled to a resilient element, the resilient element having an upper end coupled to a retention bar, the retention bar being fit over the fitting portion of the connection bar so that compression of the resilient element allows the retention bar to move reciprocally with respect to the fitting portion.
2. The ink cartridge device as claimed in claim 1, wherein the connection bar forms an insertion portion that forms on an external thread for threadingly fitting into an interior space of the ink cartridge and for adjusting a penetration depth of screwing into the ink cartridge so as to adjust a biasing force induced by the resilient element.
3. The ink cartridge device as claimed in claim 2, wherein the ink cartridge forms an upper opening having an inside surface forming an internal thread.
4. The ink cartridge device as claimed in claim 1, wherein the connection bar forms a vent hole in the fitting portion so that when the retention bar is subjected to depression to move reciprocally with respect to the fitting portion, an amount of air is forced into the vent hole and reaching an interior of the ink cartridge. |
