AN ELECTRIC MOTOR WITH A SEALING SYSTEM

摘要

An electric motor (10) configured to come into contact with a lubricating medium comprises a housing defining an interior (120) and exterior (130) of the electric motor (10). The housing comprises a first end shield (30) with a shaft opening (80). A shaft (70) extends through the shaft opening (80) such that a gap (90) between the shaft opening (80) and the shaft (70) results. A first seal (100) between the first end shield (30) and the shaft (70) prevents the lubricating medium from entering the interior (120) of the electric motor (10) through the gap (90). The first seal (100) comprises at least one sealing lip (200, 210) configured to rest against the shaft (70) or against the first end shield (30) in a dynamic manner. A second seal (110) between the first end shield (30) and the shaft (70) further prevents the lubricating medium from entering the interior (120) of the electric motor (10) through the gap (90). The second seal (110) comprises at least one sealing lip (220) configured to rest against the shaft (70) or against the first end shield (30) in a dynamic manner. The electric motor (10) further comprises a drainage conduit (140) with a drainage opening (150) between the first and second seals (100, 110). By arranging a draining conduit (140) between two lip seals integrated to an end shield (30) of an electric motor (10) the end shield (30) can be brought into direct contact with a volume filled with oil without risking the oil entering an interior (120) of the motor (10).