Screen housing i.e. aggregate housing, for receiving drive of motor car, has contact bush pressed into aperture of housing and coated with material that is different from material of housing

摘要

The housing (1) has a contact bush (10) pressed into an aperture (2). Inner circumference of the aperture is electrically contacted directly or indirectly with a screen of an electric line. The housing is made of electrically conductive material, which tends under oxygen containing atmosphere for formation of an oxide layer comprising aluminum or aluminum alloy. The contact bush is coated with material that is different from the material of the housing. A contact element (12) is held in the contact bush.