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US 7,038,338 B2Granted
Drive unit
AssigneeBrose Fahrzeugteile GmbH & Co. KG
InventorsHelmut Sesselmann, Matthias Hoffmann, Markus Schultz
Life of this patent
Estimating the term…
Abstract
A driving unit especially adapted to adjusting devices for motor vehicles having an electric motor, a gear box and an electronic control device. At least one element of the electric motor, for example, at the driving shaft, the magnetic short-circuit or the motor side crankcase casing, additionally provides a gear box mechanical feature and/or a mechanical member, for example, a gear box side crankcase casing, provides an electric motor or electronic control device feature.
Claims37
A drive unit for adjustment devices in motor vehicles comprising:
- an electric motor, a housing, a gearbox, and an electronic control device, wherein at least one component part of the electric motor which fulfills at least one of an electrical and a magnetic function of the electric motor additionally provides a mechanical function of the gearbox, and wherein the gearbox comprises a reduction gearbox with a hollow wheel fixed on the housing and having a cylindrical internally toothed spline with a first number of teeth, a driven hollow wheel which has a cylindrical internally toothed spline with a second number of teeth, and a drive core driven by the electric motor, whereby the core engages circumferentially with the internally toothed splines of the hollow wheel fixed on the housing, and of the driven hollow wheel.
Dependencies are inferred from the claim text.