PRESSURE DETECTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a pressure detecting device low in height with a low parts count. SOLUTION: A diaphragm 4 comprises a bottom receiving part 8 for a magnetic body in which the lower surface side of the magnetic substrate part of a magnetic body comes into contact with the center of the bottom receiving part 8, a ring-shaped bank part 9 which is formed so as to rise in the periphery of the bottom receiving part for a magnetic body and into which the periphery of a magnetic substrate part 6 is fitted, and a part 10 for deflection to surround the overall periphery of the bank part 9. Then the inductance of a coil 21 is changed by the insertion and withdrawal of a magnetic tubular part 7 into and out of the coil 21 and the farness and nearness of the magnetic substrate part 6 with respect to the coil 21.