US 2006/0075627 A1Published application

Stator for an automotive alternator and method of manufacture therefor

AssigneeMitsubishi Denki Kabushiki Kaisha

InventorYoshihito Asao

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Abstract

In a stator for an automotive alternator, the inner circumferential surfaces of the bridge portions are placed in contact with the end surfaces of the stator core without any gaps so that the spatial ratio occupied by the clusters of stator windings belonging to the bridge portions in the coil ends of the stator coil is at high density. The method of manufacture comprises a step of manufacturing a parallelepiped laminated body having a plurality of slots by laminating a plurality of comb-shaped strips each having a band portion and a plurality of teeth, a step of inserting into the slots from the side of the openings of the slots a stator coil comprising bridge portions and axially parallel portions having current generating portions, a step of extending the ends of the teeth of the laminated body in the longitudinal direction of the laminated body, and a step of bending the laminated body to form a cylindrical shape.

Claims11

Dependent claims

A method of manufacture for a stator for an automotive alternator comprising:

a step of manufacturing a parallelepiped laminated body having a plurality of slots by laminating a plurality of comb-shaped strips each having a band portion and a plurality of teeth disposed substantially parallel to each other extending perpendicularly relative to said band portion;
a step of inserting into said slots from the side of the openings of said slots a stator coil being a cluster of three phases of connected stator windings comprising:
axially parallel portions being those portions which are substantially parallel to the central axis of said stator coil having current generating portions being those portions disposed within said slots and generating electric current;
and
bridge portions being circumferential portions connecting axially parallel portions to each other within each of said three phases of windings;
a step of extending the ends of said teeth of said laminated body in the longitudinal direction of said laminated body;
and
a step of bending said laminated body to form a cylindrical shape.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/274,156Filed 16 Nov 2005
Priority: JP 10-30684228 Oct 1998
Published: 13 Apr 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H02K 15/021
Of stator or rotor bodies: magnetic cores
Y10T 29/49009
Electrical device making: dynamoelectric machine
Y10T 29/49012
Dynamoelectric machine: rotor
Y10T 29/49073
Electromagnet, transformer or inductor: by assembling coil and core

Family

Application09/277,198Division · filed 26 Mar 1999
Application11/274,156Division · filed 16 Nov 2005
US 7,827,672 B2Related patent
US 2006/0075627 A1This patent

From the US filing history. Foreign family members aren’t listed.

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