Robert Boschgmbh

Andreas Falkenburger

Reinhold Jocham

Andreas Kaufmann

Christoph Ruf

Dieter Roeschner

A power unit for an electrical steering system includes a motor housing for accommodating a motor, a heat sink and a drive electronics system, which is arranged on the heat sink, for the motor. The heat sink and the motor housing are connected to one another in such a way that heat exchange from the drive electronics system, via the heat sink, to the motor housing is possible. The heat sink is at least partially connected to the motor housing by calking or welding or screwing. A method is used for assembling a power unit having a motor housing for accommodating a motor, a heat sink and a drive electronics system, which is arranged on the heat sink, for the motor. A connection is established between the heat sink and the motor housing by calking or welding or screwing.

Power unit for an electrical steering system

The disclosure relates to an electric device. The electric device has a housing, at least one printed circuit board, and at least one heat sink. The housing encloses a cavity, and the printed circuit board is received in the cavity. The printed circuit board is connected to the heat sink so as to conduct heat. According to the disclosure, the housing has a housing cover, and the housing cover has at least one, two, or three pressing elements, in particular pressing bolts or pressing pins, which are mounted in a movable manner along the longitudinal axis transversely to an areal extension of the housing cover. The pressing element is designed to be inserted into the cavity and to be pressed against the printed circuit board directly or at least indirectly and thus press the printed circuit board against the heat sink.

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Reutlingen, Germany

Andreas Falkenburger