| 摘要 |
<p>PROBLEM TO BE SOLVED: To separately manufacture a gear of each phase to decrease manufacturing cost, and unrequire the entire exchange when one gear is damaged by a method wherein a specified phase gear is combined with a plurality of respective phase gears to form integrally to constitute a detection gear structure. SOLUTION: When a crank shaft 26 rotates, by rotation of A.B phase gear 48-1, U phase gear 48-2, V phase gear 48-3 and W phase gear 48-4, a magnetic type sensor 24 detects a waveform of each phase in correspondence to an A phase, a B phase, a U phase, a V phase and a W phase. A control part controls a motor 14 by this signal wave. The A.B phase gear 48-1, U phase gear 48-2, V phase gear 48-3 and W phase gear 48-4 are combined with each other to form integrally to constitute a detection gear structure 22. Therefore, respective phase gears 48 can be separately manufactured, and manufacturing cost is decreased, and when one gear is damaged, it is possible to exchange only the damaged gear without exchanging all the gears.</p> |
