Method of manufacturing stator coil of rotary electric machine

Details Method of manufacturing stator coil of rotary electric machine Method of manufacturing stator coil of rotary electric machine

2005-09-06

2005-09-06

Arbes, Carl J. (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S597000, C029S598000, C029S605000, C029S732000, C310S154010, C310S156010, C242S599100

Reexamination Certificate

active

06938323

ABSTRACT:
A stator coil of a rotary electric machine such as an alternator for use in an automobile is composed of a plurality of U-shaped conductor segments inserted into slots formed in a stator core. Each segment has a head portion and two legs extending from the head portion. The plurality of segments include regular segments each having a regular distance between two legs (a regular slot-pitch) and special segments each having a special slot-pitch different from the regular slot-pitch. The head portions of both the regular and the special segments are simultaneously twisted to form the respectively required slot-pitches after a preliminary twist is given to the special segments. In this manner, a process of manufacturing the stator coil is simplified.

REFERENCES:
patent: 5363546 (1994-11-01), Bradtmueller et al.
patent: 6249956 (2001-06-01), Maeda et al.
patent: 6490779 (2002-12-01), Tokizawa et al.
patent: 6557239 (2003-05-01), Takahashi et al.
patent: 2001/0007169 (2001-07-01), Takahashi et al.
patent: 2002/0053126 (2002-05-01), Maeda et al.
patent: 40 31 276 (1992-04-01), None
patent: A 2000-092792 (2000-03-01), None

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