| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure transmission device constituted so as not to close a liquid passage, which transmits a pressure change of a liquid chamber to a pressure detection means, by air bubbles formed from a liquid. SOLUTION: The pressure transmission device 32 for transmitting the pressure of the liquid chamber 11 to the pressure detection means 31 is equipped with the fine pipe 33 communicating with the liquid chamber and the pressure detection means and the air bubble deforming means 34 provided in the fine pipe over the while length thereof and deforming air bubbles A formed from the liquid to ensure the passage of the liquid W with respect to the inner wall surface of the fine pipe to prevent the liquid passage from being closed by the air bubbles formed from the liquid. COPYRIGHT: (C)2008,JPO&INPIT
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