| 摘要 |
A rotary sensor comprises: a drive shaft having a flat portion at a forward end portion; a rotator provided with an engagement hole having a flat portion in which the forward end portion of the drive shaft is inserted; an elastic member having an elastic contact portion; and a rotation angle sensing member for detecting the rotation angle of the rotator; the rotator having a groove formed in parallel with the flat portion adjacently to the flat portion of the engagement hole, and a partition wall between the groove and the flat portion of the engagement hole; the partition wall having an open portion, through which the engagement hole communicates with the groove, and formed to a specific depth from the opening of the engagement hole; and the elastic contact portion of the elastic member inserted in the groove being projected to the engagement hole side through the open portion, into elastic contact with the flat portion of the drive shaft.
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