Electric motor assembly with braking arrangement

Details Electric motor assembly with braking arrangement Electric motor assembly with braking arrangement

1998-10-02

1999-08-03

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 78, 310 93, H02K 710

Patent

active

059329440

ABSTRACT:
An electric motor assembly includes an output shaft with a fixed large gear, a driving shaft with a fixed small gear, a motor for rotating the driving shaft, and a gear box. The gear box includes a housing and a reduction gearing, which is disposed within the housing. The gearing includes a plurality of speed-reducing members, each of which includes a rotating shaft journalled in the housing, a large gear sleeved fixedly on the rotating shaft, and a small gear sleeved fixedly on the rotating shaft and with a tooth number and a diameter that are smaller than those of the large gear. The large gears of the output shaft and the speed-reducing members mesh respectively with the small gears of the driving shaft and the speed-reducing members. One of the large and small gears of the speed-reducing members has a side surface. A biasing unit biases an end of the driving shaft to press against the side surface, thereby stopping immediately rotation of all of the large and small gears once power to drive the motor is switched off.

REFERENCES:
patent: 4460838 (1984-07-01), Ulicny
patent: 5406180 (1995-04-01), Feller, Jr.

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