| 摘要 |
<p>PURPOSE: To provide the electrostatic capacity type sensor which never causes the breaking of a wire as an operation shaft moves. CONSTITUTION: This sensor is equipped with substrates 1 and 2 which are arranged in parallel opposite each other across a certain gap, a through hole 10 formed in the substrate 1, electrode parts which are provided on the opposite surfaces of the substrates 1 and 2 so as to face each other, an insulating sheet 3 which is provided between the electrode part on the side of the substrate 1 and the electrode part on the side of the substrate 2 so that it can move in parallel to the substrates 1 and 2, and the operation shaft 30 which is arranged on the insulating sheet 3 and projects from the through hole 10 in a loose insertion state. At least one side of the electrode parts provided on the substrates 1 and 2 is electrode parts Dx+ and Dx-, and Dy+ and Dy-, the dielectric constant of the insulating sheet 3 is made different from that of its peripheral materials, and a potential difference is provided between the electrode parts of the substrates 1 and 2.</p> |
