To easily attach to an attached part with a space limitation in an outside diameter and enable reducing a diameter size, by cutting out a part of a circumference of a stator to place a projecting member of an insulator having a terminal pin and a lead wire and forming a pin direction of the terminal pin and a drawing-out direction of the lead wire along an axis direction of the stator.

This rotating detector structure comprises a non-attached part 1a having an attached projecting part 2, which is formed at a circumference of the stator 1, an insulator 6 cicularly placed at an end face of the stator 1, a projecting member 20 placed on the insulator 6 corresponding to the part 1a, a lead wire 5 and a terminal pin 7 placed on the projecting member 20, and is constituted so that a pin direction A of the terminal pin 7 and a drawing- out direction of the lead wire 5 are set along an axis direction of the stator 1.