Patent ID: 9564783
Date: 2017-02-07
CPC Classifications: H02K

Claim:
1. An electric direct current motor comprising: a shaft; a winding support; a collector with several collector wires; and an air-cored outer rotor winding with several winding terminations, wherein the outer rotor winding is at one end connected to the shaft via the winding support in a torque-proof manner, and the outer rotor winding is electrically connected to the collector; wherein the winding support is a metallic plate having a central bore for connection with the shaft, wherein the central bore is a through-hole; and wherein an insulation ring of plastics or ceramics is provided around an outer periphery of the metallic plate for electric insulation from the outer rotor winding, the insulation ring being radially disposed between the outer periphery of the metallic plate and the outer rotor winding, wherein the metallic plate is connected to the shaft by a frictional connection between the shaft and the metallic plate and by a material bonding connection between the shaft and the metallic plate.