Actuator for a control unit
AssigneeRobert Bosch GmbH
InventorsReiner Schweinfurth, Heiner Fees
Life of this patent
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Abstract
An actuator for a control unit has a control motor with a motor power takeoff shaft; a control shaft that carries the control unit; and a step-up gear, disposed between the motor power takeoff shaft and the control shaft, as well as a restoring device for restoring the control unit to a basic position if the control motor fails. To make it possible to use a single-stage step-up gear with a major step-up ratio and with advantages in terms of installation space, weight, and production costs, the restoring device has two separate energy-storing means, preferably embodied as restoring springs, of which one feeds back to the motor power takeoff shaft and the other feeds back to the control shaft.
Claims20
In an actuator for a control unit, having an electric control motor that has a power takeoff shaft;
- having a control shaft that carries the control unit;
- and having both a step-up gear, disposed between the motor power takeoff shaft and the control shaft, and a restoring device for restoring the control unit to a basic position if the control motor fails, the improvement wherein the restoring device comprises two separate energy-storing means, one of which feeds back to the motor power takeoff shaft and the other of which one feeds back to the control shaft.
Dependencies are inferred from the claim text.