| 摘要 |
<p>Provided is a pressurized pen, which is enabled to enhance the sealing property of a compression chamber (25) at a pressurizing time in the knocking operation of a knock mechanism (10) and to improve the durability. A pressuring pump mechanism (16) includes: a pressure member (20) having a front end opening portion communicating with the inside of a medium containing tube (6) and a compression chamber (25) made extensible and contractible in axial direction; and a push member (17) for coming in axial direction into and out of abutment against a rear end opening portion of the pressure member (20) and for pushing the compression chamber (25) of the pressure member (20) in a gas-tight condition in a compressing direction. The push member (17) is associated with the pushing action of a knock mechanism (10) such that it is enabled to irrotationally move toward the rear end opening portion of the pressure member (20).
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