摘要:
A dynamoelectric machine rotor comprising a rotary shaft; a field core member engaged with the rotary shaft; a field coil wound on the field core member through a bobbin; and an outer circumferential tape which is wound on an outer circumference of the field coil to prevent the field coil from unwinding; wherein the outer circumferential tape includes a substrate sheet which is provided with at least one of a recess and a projection.
摘要:
An object of the present invention is to provide a dynamoelectric machine that can be manufactured merely by adding simple work without the necessity of increasing the number of parts and that is characteristic of a minimized electromagnetic sound. Included are a pair of field cores 12 having a plurality of claw-like magnetic poles 12a on the outer circumference thereof and being arranged so that the claw-like magnetic poles 12a can alternately mesh with one another, a coil frame 14 caught in the pair of field cores 12, a field coil 13 wound about the coil frame 14, and varnish layers 18 interposed between the field cores 12 and coil frame.
摘要:
A vehicle AC generator having a rotor located with in a main unit of the generator and journaled at a rotary shaft includes a rectifier unit 21, including a plurality of diodes, a circuit board, and positive-electrode and negative-electrode side cooling plates, for rectifying an AC current. A rear bracket covers at least one of the cooling plates. Preferably, the diodes are soldered to the cooling plates, which are formed in an arcuate-belt shape. Diode leads oppose each other diametrically; connection terminals of the circuit board are collectively spot-welded. The cooling plate is provided with radial cooling fins, allowing air to flow smoothly and, thus, cooling at a relatively high efficiency. The rectifier unit is mounted in the rear bracket, the cooling plate is directly connected to the bracket, and its heat is radiated therefrom. The diodes are arranged such that they overlap diametrically in the generator, allowing its axial length to be reduced.
摘要:
Phase coil lead wires of a vehicle-mounted alternator with two three-phase star connections are led almost in parallel out of the armature in an axial direction, welded to lead wire connection parts of insert terminals of a circuit board, and connected in parallel to form the star connections by way of the insert terminals. The star connections are achieved in a solderless manner, without twisting or bending the phase coil lead wires. Consequently, there is no possibility of injuring the lead wires due to applications of large stress.
摘要:
First, a rectifier assembly is assembled from a negative heat sink assembly, a positive heat sink assembly, a circuit board assembly, and a guide. Subsequently, stator coil connecting terminals of the rectifier assembly are chucked by using a grounded chucking jig. Then, under this condition, powder coating charged with a plus polarity is sprayed to this rectifier assembly, and thus the sprayed powder coating is absorbed onto a surface of an exposed metal of the rectifier assembly by the electrostatic force. Thereafter, a heating process operation is carried out to heat/harden this powder coating, so that the insulating film is formed on the surface of the exposed metal of the rectifier assembly.
摘要:
In this compact rectifier, a arcuate bodies of a positive heat sink and a arcuate body of a negative heat sink are arranged in a coaxial manner while positioning major surfaces thereof at the same plane position. A plurality of positive diodes are mounted on the major surface of the arcuate body of the positive heat sink along the circumferential direction in such a manner that leads are directed toward an outer circumferential side. On the other hand, while a plurality of negative diodes offset by a preselected amount along the circumferential direction with respect to the positive diodes with directing the lead to an inner circumferential side, these plural negative diodes are mounted on the major surface of the arcuate body of the negative heat sink.
摘要:
Provided is a vehicle AC generator that further enhances safety at the time of a vehicle collision, without resorting to changes in material or changes in overall thickness. A vehicle AC generator 50 has: a rotor 5 provided on a shaft 4; a stator 10 disposed so as to oppose the rotor; a rectifier 12 rectifying current generated in the stator; a regulator 13 adjusting voltage generated in the stator; and a resin cover 14 covering the rectifier. A partitioning section 15 is integrally formed on the inner side of the resin cover. The partitioning section extends in the peripheral direction and rises in the axial direction of the shaft.
摘要:
In the automotive rotary electric machine stator according to the present invention, a stator winding is constituted by distributed windings, slot-housed portions and root portions of coil end portions are formed so as to have flat cross sections, and the slot-housed portions are housed in the slots in contact with each other so as to line up in a single column in a radial direction such that long sides of the flat cross sections are oriented circumferentially. Flatnesses of root portions of the coil end portions that are radially adjacent and that extend outward in different circumferential directions from the slots are mutually different.
摘要:
A rotating electrical machine for a vehicle includes a protective cover including a protruding portion projected to an opening side from a circumferential edge portion of a through hole formed in a bottom portion, a stud bolt that is inserted into the through hole to fix a rectifier to a portion of a casing at a position on one side in an axial direction, a mold resin including a projecting portion projected toward the protective cover, for electrically insulating the rectifier and the stud bolt from each other, and a fitting fixed to an extending portion of the stud bolt that extends from the through hole. A harness clamp is held by the fitting, and the projecting portion and the protruding portion are arranged at a position so that the projecting portion and the protruding portion are overlapped with each other in the axial direction of the stud bolt.
摘要:
The present invention provides an automotive rotary electric machine that can suppress unnecessary disengagement of a protective cover by increasing supporting strength for the protective cover. The automotive rotary electric machine according to the present invention includes: a rectifier and a voltage regulator that are disposed outside a first axial end of a casing; and a resin protective cover that is formed so as to have a cup shape that is constituted by a bottom portion and a cylindrical peripheral wall portion, and that is mounted onto a casing so as to cover the rectifier and the voltage regulator. The protective cover is held by a circuit board of the rectifier by coupling by snap-fitting a plurality of projections that are disposed so as to protrude from an inner circumferential wall surface of the peripheral wall portion to a plurality of projection-engaging portions that are formed on an outer peripheral wall surface of the circuit board so as to be separated circumferentially.