The present invention relates to a wheel drive device for an electric vehicle which gives a preload to an inner wheel of a wheel bearing to give an adequate weight to the wheel bearing to extend life of the wheel bearing, arranges the wheel bearing and a final gear horizontally to apply the wheel bearing regardless of a size of the final gear to increase design freedom, and applies a small wheel bearing to reduce a weight and manufacturing costs. The wheel drive device for an electric vehicle comprises: a motor installed in a motor housing to generate rotational power; an input gear connected to a rotary shaft of the motor; a reduction gear geared with the input gear; an output gear geared with the reduction gear; a final gear geared with the output gear; a shaft connected to the final gear; a hub mounted on the shaft by using a nut; a wheel bearing installed on the outer circumferential surface of the hub; a motor cover mounted on the motor housing; and a snap ring installed on the motor cover to support the wheel bearing to prevent the wheel bearing from escaping.
DEVICE FOR DRIVING WHEEL OF ELECTRIC VEHICLE
22.09.2015
Patent
Elektronische Ressource
Koreanisch
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