Direct current electric machine i.e. direct current electric motor, and switch device system for motor car, has housing or part of housing connected with contact element, so that housing or part of housing forms screening device

摘要

The system has a switch device for conducting direct current (DC) to electrical contact elements (28, 29), so that one contact element forms a negative pole and ground, and the other contact element forms a positive pole in a switching position. A rotor (7) has an effect direction in a switching position and an effect direction directed opposite to the former effect direction in the former switching position. A housing (3) or a part (4) of the housing is electrically connected with the latter contact element, so that the housing or the part of the housing forms a screening device (18). An independent claim is also included for an actuator comprising a system with a DC electric motor, a switch device and a sensor.