| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrostatic capacitance type rotation sensor, wherein changes in the capacitance between electrodes that face each other depends stably on the change in the mutually facing area of the electrodes, in the rotation direction. Ž<P>SOLUTION: A holder 120 for electrodes arranged at equal angle intervals includes a rotation shaft 123, attached to a rotational body 110 and rotatable around the shaft center, one or more overhung portions 121, provided so as to extend from the rotation shaft 123 and attached with the electrodes 128 arranged at equal angle intervals, and at least one first engagement portion 122 provided on each overhung portion 121. Moreover, a phase electrode holder 130, to which phase electrodes 132 are attached, includes an annular second engagement portion 131. In a state where the rotating shaft 123 of the electrode holder 120 is rotatably mounted in a supporting body 140, the first portions 122 engage with the second portion 131 and are slidable, in accordance with the rotation of the rotational body 110. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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