Plastic filler insert for a writing fluid converter

A plastic filler insert for use with (i) a writing instrument having a converter device including (a) a piston-cylinder unit adapted to receive and dispense writing fluid and (b) an aspirating connector, and (ii) a writing fluid container (1) having a cylindrical neck opening (2), which can be closed off with a cap, said filler insert permitting refilling, from the container (1), of the writing instrument, said filler insert comprising:

• a closure plate (3) having a sealing edge (4), the sealing edge (4) being configured to be seated on a rim of the cylindrical neck opening (2) of the writing fluid container (1), said closure plate (3) comprising a receiving connector (6), formed on a bottom (5) of the closure plate (3), said receiving connector (6) having a cylindrical receiving opening (7), and being open toward the outside, and extending into the interior of the container (1), said receiving connector (6) comprising an aspirating hose (9) configured to extend through the interior of the container (1) toward a bottom surface thereof, when the aspirating connector of the converter device has been inserted sealingly into the cylindrical receiving opening (7) of said receiving connector (6),
• wherein said closure plate (3) has a through-opening (10) provided in the bottom (5) of said closure plate (3) outside of the receiving connector (6), said through-opening (10) being configured to be closed by means of an associated insertable closure element (11),
• wherein the closure element (11) for the through-opening (10) comprises a plate-shaped closure plug (11), having a sealing edge (12) placed on the outside of the bottom (5) of the closure plate (3) so that the sealing edge remains inside the closure plate (3).

A plastic filler insert for use with (i) a writing instrument having a converter device including (a) a piston-cylinder unit adapted to receive and dispense writing fluid and (b) an aspirating connector, and (ii) a writing fluid container (1) having a cylindrical neck opening (2), Which can be closed off with a cap, said filler insert permitting refilling, from the container of the writing instrument, said filler insert comprising:.

• a closure plate (3) having a sealing edge (4), the sealing edge (4) being configured to be seated on a rim of the cylindrical neck opening (2) of the writing fluid container (1), said closure plate (3) comprising a receiving connector (6), formed on a bottom (5) of the closure plate (3), said receiving connector (6) having a. cylindrical receiving opening (7), and being open toward the outside, and extending into the interior of the container (1), said receiving connector (6) comprising an aspirating hose (9) configured to extend through the interior of the container (1) toward a bottom surface thereof, when the aspirating connector of the converter device has been inserted sealingly into the cylindrical receiving opening (7) of said receiving connector (6),
• wherein said closure plate (3) has a through-opening (10) provided in the bottom (5) of said closure plate (3) outside of the receiving connector (6), said through-opening (10) being configured to be closed by means of an associated insertable closure element (11),
• wherein the closure element (11) comprises a resilient bridge of plastic integrally formed with said closure plate (3), said closure element (11) being pivotally attached on a section of its periphery on the bottom (5) of the closure plate (3).