Rotation/translation converter gear unit
AssigneeRobert Bosch GmbH
InventorsAndreas Weh, Matthias Mayr, Andreas Ohm, Andreas Deberling
Life of this patent
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Abstract
A rotation/translation converter gear unit having a helical gear and a planetary gear for driving the helical gear. A spindle nut of the helical gear forms a planet carrier for planet wheels of the planetary gear. Situated between the planetary gear and the helical gear is an axial friction bearing, that at the same time forms a centering element which centers a sun wheel of the planetary gear between the planet wheels. In particular, the rotation/translation converter gear unit is used to drive a piston of a pressure generator for a brake control of a hydraulic vehicle brake system.
Claims10
A rotation/translation converter gear unit, comprising:
- a planetary gear;
- a helical gear having a rotatable, axially fixed member having a thread, the rotatable member having a planet carrier having planet wheels of the planetary gear;
- an axially displaceable, rotatably fixed member having a mating thread, the mating thread configured to mesh with the thread of the rotatable member so that a rotational driving of the rotatable member axially displaces the axially displaceable member;
- and
- a centering device that centers a sun wheel of the planetary gear between the planet wheels, wherein the centering device has holes for shafts of the planet wheels and of the sun wheel, with whose aid the centering device centers the sun wheel between the planet wheels, and wherein the centering device is disposed between the helical gear and the planetary gear.
Dependencies are inferred from the claim text.