| 摘要 |
PURPOSE:To make a proper dampening of a striking reaction of an opening or closing valve by a method wherein a shock absorbing valve is fitted and inserted from a large diameter chamber of a dampening chamber into a small diameter chamber. CONSTITUTION:Under an instant condition in which a large amount of high pressure gas is flowed from a pressure increasing and storing chamber 20 into an injection passage 16 and injected into a loading part of a missile, an opening or closing valve 54 receives a substantial high pressure from the high pressure gas and is rapidly displaced from a releasing start position to a full-opened position, thereby at the shock absorbing part B, a shock reaction of the opening or closing valve 54 is properly dampened. That is, in regard to a series of displacement of the opening or closing valve 54, the shock absorbing valve 57 at the shock absorbing part B is closely fitted and inserted from a large diameter chamber to the small diameter chamber in the shock absorbing chamber 38. While this close fitted state is being kept, the shock absorbing operation to cause the valve to be displaced to a rear end in the small diameter chamber and a displacement of the shock absorbing valve 57 are carried out, the shock absorbing reaction of the opening or closing valve 54 is dampened under a relative dampening action with the shock absorbing flow flowed from the small diameter chamber to the large diameter chamber through a bypassing passage 39 of the fluid in the shock absorbing chamber 38. |
