| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely maintain the performance of fluid body pressurization movement by using an O-ring in place of a sealing member for pressurization which undergoes pressurization deformation/elongation deformation at each time of knocking operation, in a pressurization type pen in which the pressurization of various fluids for painting such as an ink is conducted by a knocking operation of a user. <P>SOLUTION: The O-ring 7 is closely located at the inner surface of a pressurizing chamber A, so that when an painting operation is conducted, the O-ring 7 seals a gap between a non-porous annular flange 5a of a piston 5 which moves in the pen nib direction (downward) and the inner surface, and thus generates pressurization action to the refill unit 4. When the painting operation is canceled, sealing is canceled by the upper movement of the piston 5, and the entire body of the O-ring 7 returns to an original position (a state that an outer space communicates with an internal part of the refill unit). <P>COPYRIGHT: (C)2010,JPO&INPIT |
