| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotation angle sensor capable of simplifying coil winding and shortening tact time. <P>SOLUTION: A rotation angle sensor comprises a first rotor 11 and a second rotor 12 installed by shifting the phase of salient pole by a predetermined angle and a sensor part 20 circumferentially provided so as to be separated from the salient poles of the first rotor 11 and the second rotor 12. The sensor part 20 comprises an annular bobbin 25 installed by opening a plurality of recesses in the same direction, a first side yoke 26 fixedly installed to the first rotor 11 side of the thickness direction of the bobbin 25 and a second side yoke 27 which is made of a magnetic body and fixedly installed to the second rotor 12 side of the thickness direction of the bobbin 25. The recesses of the bobbin 25 are arranged with an input coil 21 wound at an extension position of the boundary surface between the first rotor 11 and the second rotor 12 and a first output coil 23 and a second output coil 24 wound at a position corresponding to the first rotor 11 and the second rotor 12. <P>COPYRIGHT: (C)2012,JPO&INPIT |
