Electrical machine, in particular an electric motor for driving fuel pumps

摘要

In the case of electric motors which are immersed in an electrolytically acting medium, corrosion easily occurs in the components, particularly if these parts contain copper or copper alloys and interact with a steel part. Such material pairing also occurs in the case of the brush springs and the sliding brushes. In order to prevent corrosion in the case of these parts, according to the invention, at least one of the contact surfaces has an insulation layer (21), which is resistant to fuel and alcohol, between the brush spring (9) and that end surface (19) of the sliding brush (5) which faces away from the commutator (1). <IMAGE>