Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-09-28
1997-03-04
LaBalle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310237, 310 64, H02K 1300, H02K 1304, H02K 518
Patent
active
056082800
ABSTRACT:
Disclosed is a commutator type rotary electric machine which is designed to simplify the structure through reduction of number of component parts and allows to significantly enhance heat radiation from a brush. Both end bracket supports a rotary shaft and cylindrical brush holder are made of metal. The cylindrical brush holder is secured to the end bracket. The surface of internal periphery of brush holder is covered by an electrical insulator. Since it is sufficient for the electrical insulator to have a thickness effective to electrically insulate the brush from the cylindrical brush holder, heat generating from brush is effectively conducted to the end bracket and radiated from it. Since the end cylindrical brush holder is made of metals, it is strong, cheap and can be machined easily and both the cylindrical brush holder and the end bracket can be combined and secured easily and, since they can be molded as an integral component, the rigidity can be enhanced, manufacturing processes can be simplified and number of component parts can be reduced.
REFERENCES:
patent: 1416256 (1922-05-01), Borger
patent: 3521101 (1970-07-01), Arora
patent: 4631434 (1986-12-01), Asaoka et al.
patent: 4862027 (1989-08-01), Isozumi et al.
patent: 4907464 (1990-03-01), Isozumi
patent: 5343106 (1994-08-01), Lungu et al.
Soviet Patents Abstracts, S-X section, week 9237, 1992, Oct. 28, Derwent Publications Ltd. & SA-A-1686 621.
Nagao Yasuhiro
Niimi Masami
Tamemoto Hiroaki
LaBalle Clayton E.
Nippondenso Co. Ltd.
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