Waterproof oil and salt mist invasion sealing structure at rotating shaft of plastic-packaged brushless direct-current motor

The utility model discloses a waterproof oil and salt mist invasion sealing structure at a rotating shaft of a plastic package brushless direct current motor, and relates to the field of brushless direct current motors. According to an existing plastic package brushless direct current motor, a gap exists between a shaft outlet hole and a shaft, water and oil easily enter a bearing chamber along the gap of the shaft outlet hole when the existing plastic package brushless direct current motor is applied to a salt mist or lampblack environment, a bearing rusts or scale deposits in the bearing chamber, a front end cover rusts, and the service life of the motor is affected. A wear-resistant and oil-resistant rubber sealing ring in interference fit is embedded between a plastic package stator shell and an end cover, an inner sealing lip and an outer sealing lip are arranged in a center hole of the wear-resistant and oil-resistant rubber sealing ring and are in interference fit with a motor rotating shaft, a surroun