Electrical power steering for motor car, has push rod comprising base body on which toothing and/or screw thread are arranged, where body is made from plastic and toothing and/or screw thread are formed as inserts made of metallic material

摘要

The apparatus has a pushrod (10) comprising a base body (11) on which a toothing and/or a screw thread are arranged. The base body is made from plastic e.g. fiber-plastics composite, thermosetting polymer and thermoplastic, and the toothing and/or the screw thread are formed as inserts (12, 13) that are made of a metallic material e.g. curable steel. The inserts have a rough surface at contact surfaces that are turned towards the base body, where the rough surface is formed by blasting, milling, turning and/or etching.