Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-03-16
1990-09-04
Wong, Peter S.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 83, 290 48, 74 7A, H02K 1100, H02K 710, F02N 1100
Patent
active
049547330
ABSTRACT:
A coaxial starter for starting an engine comprises an electric motor having an armature shaft which is hollow; an output rotary shaft which is disposed at the front end of the motor and inserted in the internal opening of the armature shaft at one end of the output rotary shaft so as to be slidable in the axial direction of the output rotary shaft, and has a pinion at the other end thereof so that the pinion is engaged with or disengaged from the ring gear of an engine; an overrunning clutch for transmitting the rotatory power of the armature shaft to the output rotary shaft; and an electromagnetic switch disposed at the rear end of the motor so as to energize the motor and slide the output rotary shaft, wherein a housing nearly shaped as a cup and having a through hole in the rear portion of the housing is provided between the yoke of the motor and the switch; a bearing for supporting the armature shaft is provided in the housing; the brush holder of the motor is supported in such a manner that the holder is covered with the housing, and projects out of the nearly central portion of the housing; and a fixed contact, which is connected to a power supply through an external terminal, and a fixed contact, which is connected to the brush of said motor, are attached to the holder integrally therewith and project out of said through hole in such a manner that the contacts face the movable contact of the switch.
REFERENCES:
patent: 4525632 (1985-06-01), Tanaka
patent: 4816712 (1989-03-01), Tanaka
La Balle C.
Mitsubishi Denki & Kabushiki Kaisha
Wong Peter S.
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