| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily and accurately correct a rotational direction position of a rotating body relative to an output shaft. <P>SOLUTION: A detection side gear part 31 is formed on the entire circumference of a rotating body 30, and an output side gear part 243 is formed at one gear 24 that rotates together with, as one body, an output shaft 90 constituting power transmission means 20. Between the detection side gear part 31 and the output side gear part 243, speed adjusting means is interposed which contains a composite gear 35 that satisfies a relational expression ¾Cr-a¾<¾Cs-b¾, where Cr is an actual transmission ratio between the detection side gear part and the output side gear part, with a gear change wheel train being interposed (not a natural number): a is a natural number except for 0, being closest to Cr: Cs is a transmission ratio between the detection side gear part and the output side gear part on the assumption that the detection side gear part directly engages with the output side gear part (not a natural number): and b is a natural number except for 0, being closest to Cs. <P>COPYRIGHT: (C)2012,JPO&INPIT |
