Abstract: In a permanent magnet type electrical rotating machine having coils 12 with a deviated electrical angle phase at their magnetic pole positions, a relation of T2>T1 is satisfied where T1 is the number of turns of each of the coils and T2 is the number of turns of each of other coils, or alternatively a relation of R2<R1 is satisfied where R1 is a magnetic resistance of a tooth around which each of the coils is wound and R2 is a magnetic resistance of a tooth around which each of other coils is wound.

Abstract: An electrical rotating machine with permanent magnets which is configured such that the ratio of the number of magnetic poles of permanent magnets 3 to the number of magnetic poles of coils 12 is at 10:9 or 8:9. The coils 12 are configured such that a middle coil U? and two adjacent coils U+, U+ on both sides thereof are in-phase connected to be in-phase coils for each phase, and there is satisfied the relationship that T2>T1 and T2>T3, where T2 is the turn number of the middle coil U?, and T1 and T3 are the turn numbers of the adjacent coils U+, U+.

Abstract: In the stator of a electric rotary machine in which heat conductive insulation resin is filled at the end portions of a stator coil, the material of a stator core, the stator coil, the heat conductive insulation resin and a frame is selected such that a linear thermal expansion coefficient ?1 of the stator core, a linear thermal expansion coefficient ?2 of the stator coil, a linear thermal expansion coefficient ?3 of the heat conductive insulation resin being filled and a linear thermal expansion coefficient ?4 of the frame satisfy a relation that ?1<?2 <?4??3. A cooling medium path is integrally formed within the frame made from aluminum through die casting molding.

Abstract: An electrical rotating machine with permanent magnets which is configured such that the ratio of the number of magnetic poles of permanent magnets 3 to the number of magnetic poles of coils 12 is at 10:9 or 8:9. The coils 12 are configured such that a middle coil U? and two adjacent coils U+, U+ on both sides thereof are in-phase connected to be in-phase coils for each phase, and there is satisfied the relationship that T2>T1 and T2>T3, where T2 is the turn number of the middle coil U?, and T1 and T3 are the turn numbers of the adjacent coils U+, U+.

Abstract: In the stator of a electric rotary machine in which heat conductive insulation resin is filled at the end portions of a stator coil, the material of a stator core, the stator coil, the heat conductive insulation resin and a frame is selected such that a linear thermal expansion coefficient ?1 of the stator core, a linear thermal expansion coefficient ?2 of the stator coil, a linear thermal expansion coefficient ?3 of the heat conductive insulation resin being filled and a linear thermal expansion coefficient ?4 of the frame satisfy a relation that ?1<?2<?4??3. A cooling medium path is integrally formed within the frame made from aluminum through die casting molding.

Abstract: In the stator of a electric rotary machine in which heat conductive insulation resin is filled at the end portions of a stator coil, the material of a stator core, the stator coil, the heat conductive insulation resin and a frame is selected such that a linear thermal expansion coefficient ?1 of the stator core, a linear thermal expansion coefficient ?2 of the stator coil, a linear thermal expansion coefficient ?3 of the heat conductive insulation resin being filled and a linear thermal expansion coefficient ?4 of the frame satisfy a relation that ?1<?2 <?4 ??3. A cooling medium path is integrally formed within the frame made from aluminum through die casting molding.

Abstract: An automotive alternator comprises: a stator provided with a stator coil; a rotor supported for rotation in the stator to apply an alternative magnetic field to the stator; a regulator for regulating output; a rectifier for rectifying generated current; a plurality of housings holding the stator and the rotor; and a coolant path through which a coolant flows through at least one of the plurality of housings to transfer heat generated in the stator coil outside the automotive alternator. Fastening devices formed of a material having good heat conductance fasten the regulator and a heatsink for the regulator together to the housing at a position apart from the housing to transfer heat generated by the regulator to the housing. Thus, the automotive alternator can maintain a stable cooling ability in a hot atmosphere for a long time.

Abstract: In the stator of a electric rotary machine in which heat conductive insulation resin is filled at the end portions of a stator coil, the material of a stator core, the stator coil, the heat conductive insulation resin and a frame is selected such that a linear thermal expansion coefficient &agr;1 of the stator core, a linear thermal expansion coefficient &agr;2 of the stator coil, a linear thermal expansion coefficient &agr;3 of the heat conductive insulation resin being filled and a linear thermal expansion coefficient &agr;4 of the frame satisfy a relation that &agr;1<&agr;2 <&agr;4 ≦&agr;3. A cooling medium path is integrally formed within the frame made from aluminum through die casting molding.

Abstract: An alternator for use in an automobile includes brackets for supporting a rotation shaft at both sides of a rotor, being thermally connected to a stator for supporting the stator, while one side of the rotor is closed by a bracket. A cooling water passage is provided in the bracket, a cooling fan is provided on the closed side of the rotor, and a cooling fin provided opposing to the cooling fan and in vicinity of the cooling water passage, thereby enabling cool down of the stator and the rotor, effectively, with low noises, and thereby obtaining a high power output.

Abstract: An automotive alternator comprises: a stator provided with a stator coil; a rotor supported for rotation in the stator to apply an alternative magnetic field to the stator; a regulator for regulating output; a rectifier for rectifying generated current; a plurality of housings holding the stator and the rotor; and a coolant path through which a coolant flows through at least one of the plurality of housings to transfer heat generated in the stator coil outside the automotive alternator. Fastening devices formed of a material having good heat conductance fasten the regulator and a heatsink for the regulator together to the housing at a position apart from the housing to transfer heat generated by the regulator to the housing. Thus, the automotive alternator can maintain a stable cooling ability in a hot atmosphere for a long time.

Abstract: In an alternator for use in an automobile, comprising brackets 70 for supporting a rotation shaft 6 at both sides of a rotor 1, being thermally connected to a stator 12 for supporting the stator 12, while one side of the rotor 1 is closed by the bracket 70, cooling water passages 15 provided in the bracket 70, a cooling fan 51 provided on the closed side of the rotor 1, and a cooling fin provided opposing to and in vicinity of the cooling fan 15, thereby enabling cool down of the stator and the rotor, effectively, with low noises, and thereby obtaining a high power output.

Abstract: An object of the invention is to, in a vehicular alternating current (AC) dynamo, reduce an influence of vibration on a brush during operation, thereby preventing the brush from wobbling, cracking or causing other damages, also to make the brush sufficiently exposed to cooling air during operation, thereby preventing the brush temperature from rising excessively. In the vehicular AC dynamo, by virtue of a pressing force produced upon a tubular cover integral with a fan guide being fixed to a rear bracket through a seal member, an abutting end surface of a projection of the tubular cover is axially abutted with an inner abutting surface of a recess of the brush holder for pressing and fixing said brush holder against and to the rear bracket.

Abstract: A fuel supply pump so structured that an electric motor section and a pump section are housed in a tubular casing provided with a pipe for connection with an external hose, and an opening of the casing is enclosed by an end cover integrally provided with a connection pipe and a terminal. The electric motor section comprises a holder made of an insulating material and consisted of a pair of parts divided about its axis, an armature held at both ends of the holder through bearings, field magnets held on the respective holder plates, yokes arranged to cover the gaps between the paired parts, and brush units arranged to be inserted in the respective holder parts. The pump section comprises a rotor mounted to one end of the axis of shaft of the armature, and a pump-housing fixedly arranged to cover the rotor. Both the electric motor section and the pump section are both covered with the casing, and the opening of the casing is covered with the end cover, so that both the sections are assembled together.