Patent ID: 6091171
Filing Date: 2000-07-18
Classification: H02K

Abstract:
An electric motor comprising:a rotor having a rotary shaft;a yoke supporting one end of the rotary shaft rotatably and formed into a flat shape having a pair of parallel flat walls;a housing supporting another end of the rotary shaft rotatably and supporting the rotor therein with the yoke;position indicating means, mounted on the rotor, for indicating a position of rotation of the rotor;signal generating means, disposed to face the position indicating means with a spacing relative to the position indicating means, for producing an output signal varying with the rotation of the rotor;a commutator disposed on the rotary shaft;a pair of power supply brushes disposed to face each other through the commutator; anda casing accommodating the signal generating means therein and sandwiched between the housing and the yoke, the casing being disposed between the pair of power supply brushes and one of the parallel flat walls in such a manner that a longitudinal direction of the casing is in parallel with the one of the parallel flat walls and a direction in which the pair of power supply brushes face each other.