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US 4,546,280 AGranted
Alternator with unitary brush-holder and bearing hub
AssigneeRobert Bosch GmbH
InventorGerhard Pfluger
Life of this patent
Estimating the term…
Abstract
To simplify assembly of automotive-type alternators, the end or bearing shield (20) at the slip ring side thereof--that is remote from the drive side--is formed as a unitary plastic element, fitted into the housing and forming, at the same time: (1) a brush holder with means for guiding current transfer brushes; (2) an end plate for the generator; (3) a current conductor support board, for example, by having current conductors molded therein; (4) a bearing support for bushing or hub for the slip ring side bearing; and (5) a support structure for sector-shaped rectifier diode cooling plates, and terminal posts.
Claims10
Vehicular-type alternator having
- slip rings (25,26) disposed near one axial end thereof;
- a drive-side end shield (9);
- a unitary slip-ring-side end shield, brush-holder, bearing support hub, and diode cooling plate support structure (20) of insulating material, located axially at the opposite end of the alternator from said drive-side shield (9) and secured thereto;
- a reception surface (30) formed in said shield structure (20);
- a voltage regulator (31) secured in said reception surface;
- electrical conductors (50) molded into said unitary structure (20);
- a stator (13,14);
- a rotor (1);
- means (10) for securing the stator to the drive-side end shield (9), said means comprising a unitary extension of the drive-side end shield (9) projecting at least approximately over the region of slip rings (25,26) forming part of the rotor;
- a drive-side bearing means (7) positioned in the drive-side end shield and journalling the rotor therein, located at one of the axial ends of the alternator;
- a slip-ring-side bearing means (8) positioned in a bearing support hub portion (23,24) of said unitary slip-ring-side end shield structure (20) and journalling the rotor (1) therein;
- current transfer brushes (27,28) for carrying current to and from said slip rings, disposed in a brush-holder portion (29) of said unitary structure (20);
- multi-phase windings (14) on said stator;
- and
- a rectifier array for rectification of alternating current produced in said multi-phase windings, including two sector-shaped diode support and cooling plates (33,34) disposed in a support portion (48) of said unitary structure (20).
12 more elements
Vehicular-type alternator, having
- slip rings (25,26) disposed near one axial end thereof;
- a drive-side end shield (9);
- a unitary slip-ring-side end shield, brush-holder, bearing support hub, and diode cooling plate support structure (20) of insulating material, located axially at the opposite end of the alternator from said drive-side shield (9) and secured thereto;
- a reception surface (30) formed in said shield structure (20);
- a voltage regulator (31) secured in said reception surface;
- electrical conductors (50) molded into said unitary structure (20);
- a stator (13,14);
- a rotor (1);
- means (10) for securing the stator to the drive-side end shield;
- a drive-side bearing means (7) positioned in the drive-side end shield and journalling the rotor therein, located at one of the axial ends of the alternator;
- a slip-ring-side bearing means (8) positioned in a bearing support hub portion (23,24) of said unitary slip-ring-side end shield structure (20) and journalling the rotor (1) therein;
- current transfer brushes (27,28) for carrying current to and from said slip rings, disposed in a brush-holder portion (29) of said unitary structure (20);
- multi-phase windings (14) on said stator;
- and
- a rectifier array for rectification of alternating current produced in said multi-phase windings, including two sector-shaped diode support and cooling plates (33,34) disposed in a support portion (48) of said unitary structure (20);
- wherein the means (10) for securing the stator to the drive-side end shield comprises a unitary extension of the drive-side end shield (9) projecting at least approximately over the region of slip rings (25,26) forming part of the rotor, and
- wherein the unitary structure (20) forming said slip-ring-side end shield includes a protecting shroud portion (24) extending axially inwardly into the alternator and overlapping the slip rings.
14 more elements
Dependencies are inferred from the claim text.