Electromechanically drivable brake pressure generator

Patent metadata

Field	Value
Publication number	US-11981305-B2
Application number	US-202017779769-A
Country	US
Kind code	B2
Filing date	Oct 29, 2020
Priority date	Dec 5, 2019
Publication date	May 14, 2024
Grant date	May 14, 2024

Abstract

An electromechanically drivable brake pressure generator for a hydraulic brake system of a vehicle. The brake pressure generator including a spindle drive unit for converting a rotary movement on the drive side into a translational movement for the purpose of actuating a piston of a hydraulic piston-and-cylinder unit. A gear unit is arranged between the spindle drive unit and an electric drive motor. A drive motor axis and an axis of the spindle drive unit are arranged radially offset from one another. The piston-and-cylinder unit and the electric drive motor are arranged on axially opposite sides of the gear unit.

First claim

What is claimed is:

1. An electromechanically drivable brake pressure generator for a hydraulic brake system of a vehicle, comprising:
a spindle drive unit configured to convert a rotary movement on a drive side into a translational movement to actuate a piston of a hydraulic piston-and-cylinder unit; and
a gear unit arranged between the spindle drive unit and an electric drive motor;
wherein a drive motor axis and an axis of the spindle drive unit are arranged radially offset from one another, and the piston-and-cylinder unit and the electric drive motor are arranged on axially opposite sides of the gear unit;
wherein the piston-and-cylinder unit is received in a valve housing opposite which the electric drive motor is mounted, and
wherein a motor shaft of the electric drive motor extends into the valve housing, in which a speed sensor is arranged at an opposite axial end to the electric drive motor.

2. The electromechanically drivable brake pressure generator as recited in claim 1 , wherein the gear unit includes a planetary gear which is arranged coaxially in relation to the drive motor axis.

3. The electromechanically drivable brake pressure generator as recited in claim 2 , wherein the planetary gear includes a ring gear on an output side, and the ring gear cooperates with a spur gear that drives a spindle of the spindle drive unit.

4. The electromechanically drivable brake pressure generator as recited in claim 2 , wherein planet wheels of the planetary gear are configured as stepped planets.

5. The electromechanically drivable brake pressure generator as recited in claim 2 , wherein the planetary gear is configured to have two stages.

6. The electromechanically drivable brake pressure generator as recited in claim 2 , wherein the electric drive motor includes a motor housing which is secured to the valve housing and on which a planet carrier is secured such that it cannot rotate in relation thereto.

7. A vehicle, comprising:
an electromechanical brake pressure generator for a hydraulic brake system, the electromechanical brake pressure generator including:
a spindle drive unit configured to convert a rotary movement on a drive side into a translational movement to actuate a piston of a hydraulic piston-and-cylinder unit, and
a gear unit arranged between the spindle drive unit and an electric drive motor,
wherein a drive motor axis and an axis of the spindle drive unit are arranged radially offset from one another, and the piston-and-cylinder unit and the electric drive motor are arranged on axially opposite sides of the gear unit;
wherein the piston-and-cylinder unit is received in a valve housing opposite which the electric drive motor is mounted, and
wherein a motor shaft of the electric drive motor extends into the valve housing, in which a speed sensor is arranged at an opposite axial end to the electric drive motor.

Assignees

• Bosch Gmbh Robert

Inventors

• Oehler Claus
• Boehm Mark

Classifications

• B60T13/745 Primary

  acting on a hydraulic system, e.g. a master cylinder · CPC title

• B60T17/08

  Brake cylinders other than ultimate actuators (with built-in wear-compensating mechanisms, ultimate actuators F16D) · CPC title

• B60T7/042 Primary

  by electrical means, e.g. using travel or force sensors · CPC title

• B60T13/588 Primary

  both fluid and mechanical assistance or drive · CPC title

• B60T11/20

  Tandem, side-by-side, or other multiple master cylinder units · CPC title