| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pressure sensor, while inhibiting generation of air bubbles, capable of implementing correct pressure detection. <P>SOLUTION: In the pressure sensor, rather than a channel into which the pressure of a pressure medium is introduced is not filled with gel-like material 42, but is basically filled with protective oil 41 so that a structure is obtained, where a surface of protective oil 41 is covered with gel-like material 42 for preventing leakage of protective oil 41. Hence, even if a gel-like material 42 comes into contact with a first lower case 11 to generate air bubbles, because of the small area of the contact part, influence on pressure transmission is hardly produced; whereas, even if air bubbles are generated, because they can be generated at distant locations from the pressure transmission channels, influence on pressure transmission can be made less. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
