Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-07-03
1997-11-18
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Rotary
H02K 1500
Patent
active
056891458
ABSTRACT:
An object of the present invention is to provide a novel stator structure in an electrical rotating machine which has a stator to one end of which an end plate provided with a bearing is fixedly mounted and a rotor rotatably supported by the bearing, in which unwanted metal particles produced during welding of the end plate to the stator are prevented from entering between the stator and the rotor.
Positioning protrusions 61 are formed extending axially from the one end of the stator and positioning apertures 71 are provided in the end plate 65 for corresponding to and engaging with the positioning protrusions 61. Also, welding projections to be melted by resistance welding are arranged as located substantially on straight lines respectively extending from the rotation shaft 67 across the positioning protrusions 61 and on the outer side of the positioning protrusions 61. The end plate 65 is joined to the one end of the stator by welding at welding points 14. Unwanted metal particles produced during the resistance welding are blocked by the positioning protrusions 61 and will hardly flow towards the rotor 63.
REFERENCES:
patent: 4349957 (1982-09-01), Lundin
patent: 4364169 (1982-12-01), Kawano et al.
patent: 5168662 (1992-12-01), Nakamura et al.
patent: 5187400 (1993-02-01), Kurata
Matsushita Kunitake
Matsuura Hideki
Sano Hiroshi
Yamawaki Takayuki
Dougherty Thomas M.
Link Jonathan
Minebea Co. Ltd.
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