Electromechanical brake pressure generator including a threaded drive system

US11466761B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Claus Oehler · Karlsruhe, DE
• Mark Boehm · Lehrensteinsfeld, DE
• Martin Uhlig · Ilsfeld, DE

Key dates

• Filing date: Apr 21, 2020
• Grant date: Oct 11, 2022
• Expiry date: Jul 3, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2025/204
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An electromechanical brake pressure generator for a hydraulic braking system of a vehicle, including at least one threaded drive system. The system includes a hydraulic piston, a spindle and a spindle nut, which cooperate via a thread, and includes an electromotive drive, via which the spindle and the spindle nut are rotatable relative to one another. The hydraulic piston of the piston/cylinder unit at least partially radially surrounds the spindle and the spindle nut, the hydraulic piston being accommodated in a hydraulic cylinder of the piston/cylinder unit. An anti-twist protection is formed by a recess extending in the axial direction and forming a sliding surface, and by a sliding element protruding into the recess. The sliding element rests against a planar contact area of the sliding surface so that the hydraulic piston is secured against twisting and is axially displaceable by a rotation of the spindle or the spindle nut.