Transmission device and electromotive brake booster
AssigneeRobert Bosch GmbH
InventorsWilli NAGEL, Remy GARNIER
Life of this patent
Estimating the term…
Abstract
A transmission device, for example of an electromotive brake booster, includes a first worm gear and a first pinion connected to each other and rotatable about a shared first rotation axis, a second worm gear and a second pinion connected to each other and rotatable about a shared second rotation axis, a worm shaft that can be set into rotation by an electric motor and that is contacted by the first and second worm gears, a piston that is adjustable along an adjustment axis by rotations of the first pinion about the first rotation axis and the second pinion about the second rotation axis and that is guided in a floating manner to be adjustable perpendicularly to the adjustment axis by a floating travel of at least 0.6 mm.
Claims12
1-10. (canceled)
A transmission device comprising:
- a worm shaft connectable to an electric motor and rotatable about a longitudinal axis of the worm shaft under influence of the electric motor;
- a first pinion;
- a second pinion;
- a first worm gear connected to the first pinion;
- a second worm gear connected to the second pinion, wherein the first worm gear and the second worm gear contact the worm shaft such that the first worm gear and the first pinion are rotatable about a shared first rotation axis in response to rotation of the worm shaft about the longitudinal axis, and such that the second worm gear and the second pinion are rotatable about a shared second rotation axis in response to the rotation of the worm shaft about the longitudinal axis;
- and
- a piston that is adjustable along an adjustment axis by rotations of the first pinion about the first rotation axis and the second pinion about the second rotation axis and that is guidable in a floating manner between the first pinion and the second pinion for adjustment perpendicularly to the adjustment axis by a floating travel up to at least 0.6 mm.
An electromotive brake booster comprising a transmission device, the transmission device including:
- a worm shaft connectable to an electric motor and rotatable about a longitudinal axis of the worm shaft under influence of the electric motor;
- a first pinion;
- a second pinion;
- a first worm gear connected to the first pinion;
- a second worm gear connected to the second pinion, wherein the first worm gear and the second worm gear contact the worm shaft such that the first worm gear and the first pinion are rotatable about a shared first rotation axis in response to rotation of the worm shaft about the longitudinal axis, and such that the second worm gear and the second pinion are rotatable about a shared second rotation axis in response to the rotation of the worm shaft about the longitudinal axis;
- and
- a booster piston that is adjustable along an adjustment axis by rotations of the first pinion about the first rotation axis and the second pinion about the second rotation axis and that is guidable in a floating manner between the first pinion and the second pinion for adjustment perpendicularly to the adjustment axis by a floating travel up to at least 0.6 mm.
Dependencies are inferred from the claim text.