摘要:
A thin metal sheet is laminated to form in advance a plurality of core units (of a circular cylinder shape) having the thickness of 1/N (N is a natural number of more than 2) of a predetermined thickness in the laminating direction and this plurality of core units is laminated again for securing so that the whole stator does not cause any mode of oscillation in the diametric direction.
摘要:
An automotive alternator comprises a voltage regulator case molded from insulating resin in which a connector portion, a circuit housing portion for housing a circuit portion of a voltage regulator and a condenser housing portion are integrally formed, in which conductors are insert-molded to form connecting terminals for electric connection to the outside and internal wiring paths, and on which a heat sink for cooling the circuit portion of the voltage regulator is disposed so as to cover an opening of the circuit housing portion, the voltage regulator case being disposed on same plane as a rectifier which intersects the axial center of the shaft at a right angle so as to surround the shaft at one end of the shaft, wherein the connector portion, the circuit housing portion and the condenser housing portion of the voltage regulator case are arranged circumferentially such that the axial direction of the connector portion, the longitudinal direction of cooling fins of the heat sink and the longitudinal direction of the condenser housing portion each point towards the axial center of the shaft.
摘要:
A brush holding apparatus is mounted to an inner wall surface of a rear bracket and a cap mounted to a head portion of a brush holder portion is exposed through an opening in the rear bracket. Brushes are housed inside brush insertion apertures of the brush holder portion and are placed in elastic contact with slip rings by springs. An abrasion detection terminal is insert molded into the brush holder portion, a contact thereof projecting inside one of the brush insertion apertures and coming into contact with the corresponding spring when the brushes are abraded by a predetermined amount.
摘要:
The present invention is a rotor for a vehicle a.c. generator which increases the operational life of the a.c. generator. The rotor, in the present invention for a vehicular a.c. generator includes a bobbin having a rotor coil for generating a magnetic field wound thereon and including fixing portions for supporting lead wires of the rotor coil; a pair of rotor cores for sandwiching the rotor coil and the bobbin therebetween; slip rings having terminals to be connected to the lead wires; grooves formed in the rotor core for housing the lead wires, the lead wires extending between the fixing portions and the terminals; and a rear fan provided so as to cover the grooves. The fixing portion, the terminal and the groove for each of the lead wires are provided so as to be substantially aligned, and the groove has an inward portion near an inner periphery of the rotor formed in a greater width than an outward portion near an outer periphery of the rotor.
摘要:
A brush holding apparatus is mounted to an inner wall surface of a rear bracket and a cap mounted to a head portion of a brush holder portion is exposed through an opening in the rear bracket. Brushes are housed inside brush insertion apertures of the brush holder portion and are placed in elastic contact with slip rings by springs. An abrasion detection terminal is insert molded into the brush holder portion, a contact thereof projecting inside one of the brush insertion apertures and coming into contact with the corresponding spring when the brushes are abraded by a predetermined amount.
摘要:
A brush holding apparatus is mounted to an inner wall surface of a rear bracket and a cap mounted to a head portion of a brush holder portion is exposed through an opening in the rear bracket. Brushes are housed inside brush insertion apertures of the brush holder portion and are placed in elastic contact with slip rings by springs. An abrasion detection terminal is insert molded into the brush holder portion, a contact thereof projecting inside one of the brush insertion apertures and coming into contact with the corresponding spring when the brushes are abraded by a predetermined amount.
摘要:
A positive-side heat sink and a negative-side heat sink are both disposed on a generally flat plane perpendicularly intersecting a shaft, the longitudinal direction of the positive-side diodes secured to the radially inner positive-side heat sink being disposed along the radial direction of the positive-side heat sink, and the longitudinal direction of the negative-side diodes secured to the radially outer negative-side heat sink being disposed along the circumferential direction of the negative-side heat sink.
摘要:
A brush holding apparatus is mounted to an inner wall surface of a rear bracket and a cap mounted to a head portion of a brush holder portion is exposed through an opening in the rear bracket. Brushes are housed inside brush insertion apertures of the brush holder portion and are placed in elastic contact with slip rings by springs. An abrasion detection terminal is insert molded into the brush holder portion, a contact thereof projecting inside one of the brush insertion apertures and coming into contact with the corresponding spring when the brushes are abraded by a predetermined amount.
摘要:
A thin metal sheet is laminated to form in advance a plurality of core units (of a circular cylinder shape) having the thickness of 1/N (N is a natural number of more than 2) of a predetermined thickness in the laminating direction and this plurality of core units is laminated again for securing so that the whole stator does not cause any mode of oscillation in the diametric direction.
摘要:
A stator core which joint vibration in a radial direction and can suppress a vibration mode and a production process therefor. The stator core has a plurality of welded portions formed on the exterior or interior side of the cylinder in the same direction diagonal to the lamination direction of the metal sheet from the upper end to the lower end of the cylinder.