摘要:
A stator iron core 21 is formed by laminated iron cores 21a, in which a plurality of slots 24 are shaped with predetermined pitches in a peripheral direction. At least a portion of the laminated iron cores 21a corresponding to an end surface 27 of the stator iron core and inner peripheral walls of the slots 24 are coated with an insulative resin 100 to insulate the stator iron core 21 from a stator winding 22, whereby an insulating capability between the slots and the winding is high, and an a.c. generator for vehicle is easily produced with a low cost.
摘要:
A stator winding includes a plurality of first to sixth winding sub-portions each having one turn. First series-connected windings are formed with the first, third, and fifth winding sub-portions connected in series. Second series-connected windings are formed with the second, fourth, and sixth winding sub-portions connected in series. Each of Winding phase groups for each phase is formed with the first and second series-connected windings connected in parallel.
摘要:
A stator for an alternator includes a cylindrical stator core composed of a laminated core formed with a number of slots extending axially at a predetermined pitch in a circumferential direction, and a polyphase stator winding including a number of winding sub-portions in each of which a long strand of wire is wound so as to alternately occupy an inner layer and an outer layer in a slot depth direction within the slots at intervals of a predetermined number of slots, the strand of wire folding back outside the slots at axial end surfaces of the stator core, wherein the winding sub-portions are constituted by at least one winding assembly composed of a pair of first and second winding groups, the first winding group including a number of first winding sub-portions each having one turn constructed by winding one of the strands of wire so as to alternately occupy an inner layer and an outer layer in a slot depth direction within the slots at intervals of the predetermined number of slots, the first winding sub-portions being disposed at a pitch of one slot from each other and being equal in number to the predetermined number of slots, and the second winding group including a number of second winding sub-portions each having one turn constructed by winding one of the strands of wire so as to alternately occupy an inner layer and an outer layer in a slot depth direction within the slots at intervals of the predetermined number of slots and so as to be inversely wound and offset by an electrical angle of 180° relative to the first winding sub-portions, the second winding sub-portions being disposed at a pitch of one slot from each other and being equal in number to the predetermined number of slots.
摘要:
An automotive alternator is provided that reduces exclusive circumferential space for a regulator assembly inside a rear bracket, and that also increases performance in cooling the regulator assembly and a rectifier by ensuring that flows of air that cool the regulator assembly and the rectifier do not interfere with each other.An approximately C-shaped rectifier is disposed in a vicinity of a rotating shaft, and a regulator assembly is disposed between two end portions of the approximate C shape of the rectifier. A brush holder portion, a regulator circuit housing portion, and a connector portion that constitute a regulator assembly are positioned such that respective center lines thereof are in a common plane that includes a central axis of the rotating shaft. A partitioning wall is disposed so as to project from an inner wall surface of the rear bracket so as to separate a rectifier cooling airflow passage for cooling the rectifier and a regulator circuit cooling airflow passage for cooling the regulator circuit by stopping circumferential flow of air that is sucked in through the suction aperture to cool the rectifier and the regulator circuit respectively.
摘要:
There is provided an in-vehicle AC generator having a regulator assembly that is mounted in the bracket of the AC generator. The regulator holding unit provided in the regulator assembly has a containing portion in which at least the whole periphery of an opening is surrounded by a wall member; a circuit unit of the regulator is inserted into the containing portion through the opening; the heat sink for the regulator is held by the containing portion in such a way that the peripheral portion thereof is adhered to the wall member that surrounds the whole periphery of the opening, and closes the opening; and the containing portion is provided with a resin filled in the vicinity of the contained circuit unit.
摘要:
An automotive alternator is provided that has a brush holder assembly that reduces exclusive circumferential space for the brush holder assembly inside a rear bracket, and that also reduces entry of water, dust, etc., into a regulator circuit housing portion.The brush holder assembly has a base and a plate. The base is prepared by molding a brush holder portion, a regulator circuit housing portion, and a connector portion integrally, and the plate is mounted to the brush holder portion, and has a cover portion that closes the resin injection aperture of the regulator circuit housing portion. The brush holder portion, the regulator circuit housing portion, and the connector portion are formed so as to be positioned such that respective center lines thereof are in a common plane that includes a central axis of the rotating shaft. A lead-through opening that is formed on the rear bracket so as to allow the connector portion to be led through is generally closed by the connector portion and the cover portion.
摘要:
An automotive alternator is provided that reduces exclusive circumferential space for a regulator assembly inside a rear bracket, and that also increases performance in cooling the regulator assembly and a rectifier by ensuring that flows of air that cool the regulator assembly and the rectifier do not interfere with each other.An approximately C-shaped rectifier is disposed in a vicinity of a rotating shaft, and a regulator assembly is disposed between two end portions of the approximate C shape of the rectifier. A brush holder portion, a regulator circuit housing portion, and a connector portion that constitute a regulator assembly are positioned such that respective center lines thereof are in a common plane that includes a central axis of the rotating shaft. A partitioning wall is disposed so as to project from an inner wall surface of the rear bracket so as to separate a rectifier cooling airflow passage for cooling the rectifier and a regulator circuit cooling airflow passage for cooling the regulator circuit by stopping circumferential flow of air that is sucked in through the suction aperture to cool the rectifier and the regulator circuit respectively.