Motor having frequency generator

Claim 1

A motor comprising: a stator unit including an exciting coil and a base plate to support said exciting coil, and a shaft fixed to said base plate; a rotor unit including a magnet; and frequency generating means having a frequency generating magnet fixed to said rotor unit at the outer periphery thereof, a frequency generating coil, disposed at a position which faces said frequency generating magnet, for outputting a wave form each time said frequency generating coil passes over the frequency generating magnet, a frequency generating base plate to support the frequency generating coil, and lead wires connected to output ends of the frequency generating coil at said frequency generating base plate, said output ends of the frequency generating coil being disposed near an axial center of said rotor unit inside said frequency generating coil, said lead wires being disposed within leakage magnetic flux regions of a magnet of at least one of said rotor unit and said frequency generating magnet, and said lead wires being twisted into a single unit such that the direction of each lead wire does not cross the magnetic fluxes of the magnets whereby increase and decrease in signal to the lead wires is prevented, said lead wires being arranged to establish a connection between said output ends and said frequency generating base plate.