| 摘要 |
<p>PROBLEM TO BE SOLVED: To accurately detect a rotation position of an output shaft.SOLUTION: A motor actuator 1 includes: a case 10; an output shaft 25A having both ends supported by the case 10 and coupled to a worm gear 22 that is attached to a rotating shaft 21 of a motor 20 to rotate; and a detection device 30 detecting a rotation position of the output shaft 25A. The detection device 30 includes: a flexible board 31A fixed to the case 10 and having resistive bodies 32A and 32B; a brush 37A fixed to the output shaft 25A and being in sliding contact with the resistive bodies 32A and 32B; and terminals 35 and 36 electrically connected to the resistive bodies 32A and 32B. The flexible board 31A is formed to be cylindrical. The resistive bodies 32A and 32B have a rectangular shape so as to form along a circumferential direction of the cylindrical shape. The brush 37A is in sliding contact with the resistive bodies 32A and 32B so as to follow a circular locus centered around the axis of the output shaft 25A when the output shaft 25A rotates.</p> |
