Patent ID: 6930423

Claim:
A rotation angle detector comprising: an annular stator ( 1 ) comprising a first annular stator ( 2 ) having a plurality of first projected poles ( 4 through 4 e ) projected inwardly at predetermined angular intervals and a second annular stator ( 3 ) stacked together with the first annular stator ( 2 ) and having a plurality of second projected poles ( 5 through 5 e ) projected inwardly at predetermined angular intervals so as not to overlap the first projected poles ( 4 through 4 e ); a rotor ( 10 ) having first and second rotors ( 12 , 13 ) rotatably provided inside the annular stator ( 1 ), corresponding to the first and second annular stators ( 2 , 3 ), differing from each other in phase, and being constructed solely of cores; and an exciting winding (R 1 –R 2 ) and output windings (S 1 –S 3 , S 2 –S 4 ) wound by using the first and second projected poles ( 4 through 4 e , 5 through 5 e ), wherein the exciting winding (R 1 –R 2 ) and the output windings (S 1 –S 3 , S 2 –S 4 ) are wound continuously from the initial to the terminal ends thereof by way of the first and second projected poles ( 4 through 4 e , 5 through 5 e ).