Abstract: A commutator motor comprises a yoke, a magnetic field portion secured to the inner wall of the yoke, a shaft disposed within the yoke so as to be able to rotate freely, an armature secured to the shaft having windings constructed by winding wire by a lap-winding method into slots formed on the outer circumferential surface of a core, a commutator including a resin portion and a plurality of segments held on an outer circumferential portion of the insulating resin portion with the spaces between adjacent segments being held by the insulating resin portion, a plurality of brushes contacting the surface of the commutator, and terminals electrically connecting segments which are to have the same electric potential.

Abstract: A dynamo-electric machine comprises a shaft, a core secured to the shaft having slots formed therein extending in the axial direction, a winding composed of a wiring wound by a lap winding method through the slots, a commutator having commutator segments disposed at one end of the core and secured to the shaft, and equalizing connectors electrically connecting commutator segments which should have the same electric potential to each other, wherein the equalizing connectors are disposed in close contact with an end surface of the commutator.

Abstract: A commutator assembly for an electric motor includes a commutator having commutator segments arranged circumferentially, brushes contacting the commutator segments, and an equalizer connecting commutator segments so they have the same electric potential, the equalizer including printed circuit boards with insulating substrates and a connecting plate having an electrically conducting film on the insulating substrate, electrically connected to the commutator segments.

Abstract: A motor for an electric power steering assembly comprises permanent magnets constituting four or more poles secured to the inner wall of a yoke, a shaft disposed inside the yoke so as to be able to rotate freely, an armature secured to the shaft having a winding composed of wiring wound by a lap winding method into slots formed on the outer circumferential surface of a core so as to extend in the axial direction thereof, a commutator comprising a plurality of commutator segments secured to an end portion of the shaft, brushes disposed singly on the positive side and the negative side of the commutator so as to contact the surface thereof; and equalizing connectors connecting commutator segments which should have the same electric potential to each other.

Abstract: A dynamo-electric machine satisfies an expressionR.sub.eq .gtoreq.(.rho..sub.0 .multidot.(r1*.tau.)/(S/3))*(2.5)where .rho..sub.0 (.OMEGA..multidot.m) is the resistivity of armature coil, S (m.sup.2) is the cross-sectional area of the conductor portions thereof, r1 (m) is radius of rotation of the connecting portions between equalizers and armature circuits, namely the armature coil, risers, or commutator segments, .tau. (rad) is the pitch of pole pairs, and R.sub.eq (.OMEGA.) is the resistance value of the equalizer.

Abstract: A commutator for a dynamo-electric machine according to the present invention comprises a cylindrical commutator main body provided with a plurality of commutator segments disposed around the circumference thereof, an equalizer assembly disposed inside the commutator main body provided with equalizer segments electrically connecting commutator segments which are to have the same electric potential, and an insulating resin portion disposed within the space inside the commutator main body integrating the commutator main body and the equalizer assembly.

Abstract: A dynamo-electric machine comprises an armature having a winding composed of a wire or wires wound by a lap winding method through slots extending in the axial direction formed on the outer circumferential surface of a core secured to a shaft, a commutator having commutator segments secured to the shaft, and an equalize disposed adjacent to the commutator in the direction of the axis of the commutator having terminals stacked in the axial direction which electrically connect commutator segments which should have the same electric potential.

Abstract: A dynamo-electric machine comprises: a shaft; a core secured to the shaft having slots formed therein extending in the axial direction; a winding composed of a wire or wires wound by a lap winding method through the slots; a commutator having commutator segments being disposed at one end of the core and secured to the shaft; and equalizing connectors electrically connecting commutator segments which should have the same electric potential; wherein one end portion of each of the equalizing connectors is connected to one of the commutator segments and the other end portion of each of the equalizing connectors passes through the slots and is connected to the other of the commutator segments.

Abstract: A throttle actuator including driving means having a stator provided with a stator winding and a rotor provided with a sun gear at a rotating shaft thereof, planetary speed reducing means having the sun gear at the rotating shaft, a stationary gear installed at an outer periphery side of the sun gear and a planet gear in mesh with the sun gear and the stationary gear for performing a planetary motion by rotating the rotor, a planetary gear support pin supporting the planet gear and performing a revolutionary motion along with the planet gear, and a planetary arm disposed between the planetary gear support pin and a valve shaft of a throttle valve.