Engine starter with a planetary reduction gear

Details Engine starter with a planetary reduction gear Engine starter with a planetary reduction gear

1985-09-23

1987-06-09

Herrmann, Allan D.

Machine element or mechanism

Engine starters

Automatic

74 7A, 74421A, 74801, 290 48, 310 83, 310 88, F02N 1506, F16H 344, H02K 7118

Patent

active

046711252

ABSTRACT:
An improved engine starter has a DC motor with a rotor shaft drivingly connected to an output shaft by a planetary reduction gear, the sun gear of the reduction gear being formed on the outer surface of the rotor shaft and the ring gear of the reduction gear being located on the inner surface of the yoke of the DC motor. The improvement comprises the yoke having a support portion integrally formed thereon which rotatably supports a one-piece end of the output shaft which is connected to the rotor shaft. Preferably, the yoke is formed by deep drawing of mild steel. A dust preventing member forms a labyrinth seal around the rotor shaft and prevents dust from entering the motor from the reduction gear.

REFERENCES:
patent: 2578094 (1951-12-01), Sears
patent: 3209603 (1965-10-01), Rodriguez
patent: 3908492 (1975-09-01), Roskelley
patent: 4454437 (1984-06-01), Tanaka et al.
patent: 4507978 (1985-04-01), Tanaka et al.
patent: 4510406 (1985-04-01), Morishita
patent: 4519261 (1985-05-01), Hamano
patent: 4520285 (1985-05-01), Isozumi et al.

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