Patent ID: 9694620
Date: 2017-07-04
CPC Classifications: B43K

Claim:
1. A reservoir type writing pen having a micro-porous straight-liquid structure, comprising a writing pen core; wherein the micro-porous straight-liquid structure includes an air pressure balance plug, a liquid storage pipe configured for storing liquid ink, and a liquid guiding device configured for leading the liquid ink in the liquid storage pipe into the writing pen core; the liquid storage pipe includes a liquid storage cylinder and a fixing cover arranged on a rear end portion of the liquid storage cylinder; the air pressure balance plug is plugged in a front end portion of the liquid storage cylinder; a first through-hole and a second through-hole are respectively defined in the air pressure balance plug; the micro-porous straight-liquid structure further includes a ventilating core with micro-pores and configured for covering a section of the entire second through-hole to keep an air pressure of inside of the liquid storage pipe and that of outside of the liquid storage pipe balance; the liquid storage pipe, the air pressure balance plug and the ventilating core form a liquid storage space configured for storing the liquid ink; the liquid guiding device includes a liquid diversion core and a relaying pen core; wherein the relaying pen core passes through the first through-hole, a rear end portion of the relaying pen core is further fixedly snapped in the fixing cover, and a front end portion of the relaying pen core is inserted in a rear end portion of the liquid diversion core, which is configured for leading the liquid ink in the liquid storage space into the liquid diversion core; the writing pen core is inserted in a front end portion of the liquid diversion core, which is configured for absorbing the liquid ink in the liquid diversion core; a gap is formed between the relaying pen core and an inner surface of the first through-hole.