Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-06-02
1998-05-12
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
180249, 475284, H02K 706, B60K 1735, F16H 344
Patent
active
057510814
ABSTRACT:
A reduction gear device with a differential gear mechanism 4 for an electric vehicle, has a planetary gear type reduction gear mechanism 3 for transmitting a power from an electric motor 2 to right and left wheels 6, 6 of the vehicle through the differential gear mechanism 4. The reduction gear mechanism 3 is contained in a casing 1, while either of output shafts 4a, 4b of the differential gear mechanism 4 penetrates an output shaft 2c of the electric motor 2. The reduction gear mechanism 3 comprises a plural of complex pinions P each formed by integrating a first pinion P1 and a second pinion P2 having a less number of teeth than that of the first pinion P1, a planetary carrier C3 connected to the output shaft 2c of the electric motor 2 and rotatably supporting each of the complex pinions P at certain positions on a common circle, a first ring gear R1 fixed onto the casing 1 and engaged with the first pinion P1 of each of the complex pinions P, and a second ring gear R2 engaged with the second pinion P2 of each of the complex pinions P and serving to transmit the power from the electric motor 2 to the differential gear mechanism 4. When utilizing a small size motor of high speed type as the electric motor 2, the reduction gear device can reduce a size of the device and simplify a construction of the device, while increasing a reduction ratio thereof.
REFERENCES:
patent: 4928227 (1990-05-01), Burba et al.
patent: 5007887 (1991-04-01), Asada
patent: 5246408 (1993-09-01), Kobayashi
patent: 5248284 (1993-09-01), Kobayashi et al.
patent: 5254052 (1993-10-01), Kobayashi
patent: 5554082 (1996-09-01), Umeyama et al.
Nissan Motor Co,. Ltd.
Stephan Steven L.
Wallace, Jr. Michael J.
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