Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-11-19
1999-12-14
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 43, 310181, 310218, H02K 122
Patent
active
060021942
ABSTRACT:
This invention provides a rotor for a dynamo-electric machine which prevents damage due to impacting during assembly to magnets arranged between claw-shaped magnetic poles to reduce magnetic flux leakage between the claw-shaped magnetic poles.
The rotor for a dynamo-electric machine according to the present invention comprises: a rotor coil which generates magnetic flux when an electric current is passed through it; a first pole core body and a second pole core body each having claw-shaped magnetic poles 23, 24, which are disposed so as to cover the rotor coil, are mutually intermeshed, and are polarized by the magnetic flux; and a magnetic body 31 wound in a zigzag so as to be disposed between each of the adjacent claw-shaped magnetic poles 23, 24, wherein the magnetic body 31 is provided with prismatic mediating portions 34 each comprising a magnet 36 polarized so as to reduce magnetic flux leakage between the claw-shaped magnetic poles 23, 24 and a cover portion 37 made of resin which covers the magnet 36, and wherein spaces S are formed between the mediating portions 34 and the claw-shaped magnetic poles 23, 24.
REFERENCES:
patent: 5483116 (1996-01-01), Kusase et al.
patent: 5536987 (1996-07-01), Hayashi et al.
patent: 5793144 (1998-08-01), Kusase et al.
patent: 5892313 (1999-04-01), Harris et al.
patent: 5907209 (1999-05-01), Ishida
Mitsubishi Denki & Kabushiki Kaisha
Nguyen Tran
Ramirez Nestor
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