Pressure generating apparatus for a braking system of a motor vehicle, hydraulic assemblage for interacting with the pressure generating apparatus, braking system, and method for installing a braking system for a motor vehicle

Patent metadata

Field	Value
Publication number	US-9868423-B2
Application number	US-201514964852-A
Country	US
Kind code	B2
Filing date	Dec 10, 2015
Priority date	Dec 11, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A pressure generating apparatus for a braking system of a motor vehicle, a flange embodied on a second housing component adjacent to a first housing component, which flange is congruent with a flange-shaped portion of the first housing component, is mounted on the flange-shaped portion of the first housing component, and the second housing component completely surrounds a transmission gear set of the first housing component. Also described is a hydraulic assemblage for interacting with the pressure generating apparatus, to a braking system for a motor vehicle, and to a method for installing a braking system for a motor vehicle.

First claim

What is claimed is:

1. A pressure generating apparatus for a braking system of a motor vehicle, comprising:
a first housing component having a flange-shaped portion to couple the first housing component to a hydraulic assemblage of the braking system, and a hollow-cylindrically embodied portion that is insertable into an opening in the hydraulic assemblage for receiving the first housing component, a piston being axially displaceable in the hollow-cylindrically embodied portion by a screw drive to generate a hydraulic pressure of the braking system, the screw drive having a nut drivable by an electric motor via a transmission gear set, and a spindle, the spindle being axially displaceable by a rotary motion of the nut, the piston being connected to the spindle of the screw drive so that the piston moves along with the spindle of the screw drive; and
a second housing component having the electric motor for driving the screw drive by the transmission gear set disposed on the first housing component or on the second housing component, the first housing component and the second housing component being fitted together, along an axis disposed parallel to the axial displacement direction of the piston, so that a flange embodied on the second housing component adjacent to the first housing component, which flange is congruent with the flange-shaped portion of the first housing component, is mounted on the flange-shaped portion of the first housing component, and the second housing component completely surrounds the transmission gear set.

2. The pressure generating apparatus of claim 1 , wherein a first opening is on a peripheral surface of the second, hollow-cylindrically embodied portion of the first housing component, which opening is disposed, when the first housing component is in an installed state in the hydraulic assemblage, so that it is connectable to a first hydraulic line, embodied at least in part as a recess, of the hydraulic assemblage, for the outflow of hydraulic fluid from the first housing component via the hydraulic assemblage to an equalizing container.

3. The pressure generating apparatus of claim 1 , wherein a second opening is on a peripheral surface of the second, hollow-cylindrically embodied portion of the first housing component, which opening is disposed, when the first housing component is in an installed state in the hydraulic assemblage, so that it is connectable to a second hydraulic line, embodied at least in part as a recess, of the hydraulic assemblage, for the outflow of hydraulic fluid from the first housing component via the hydraulic assemblage to wheel brake cylinders of the braking system and/or for back-venting of hydraulic fluid from the equalizing container via the hydraulic assemblage to the first housing component.

4. The pressure generating apparatus of claim 1 , wherein the transmission gear set is embodied by a planetary gear set that is disposed on a side, located opposite the second, hollow-cylindrically embodied portion of the first housing component, of the flange-shaped portion of the first housing component, or on the electric motor of the second housing component.

5. The pressure generating apparatus of claim 1 , wherein the screw drive is embodied by a ball screw drive, the piston being connected to the spindle of the screw drive via a form-locking connection.

6. The pressure generating apparatus of claim 1 , wherein the piston has on an outer peripheral surface at least one protrusion that is receivable, in a cutout embodied in the first housing component and/or the hydraulic assemblage, so that the piston is nonrotatably axially displaceable.

7. A hydraulic assemblage of a braking system for interacting with a pressure generating apparatus, comprising:
an hydraulic assembly configured to be coupleable to a flange-shaped portion of the first housing component, and having an opening embodied so that a second, hollow-cylindrically embodied portion of the first housing component, in which a piston is axially displaceable, is insertable into the opening for receiving the first housing component;
wherein the pressure generating apparatus includes:
the first housing component having the flange-shaped portion to couple to the hydraulic assembly, and the hollow-cylindrically embodied portion that is insertable into the opening in the hydraulic assembly for receiving the first housing component, the piston being axially displaceable in the hollow-cylindrically embodied portion by a screw drive to generate a hydraulic pressure of the braking system, the screw drive having a nut drivable by an electric motor via a transmission gear set, and a spindle, the spindle being axially displaceable by a rotary motion of the nut, the piston being connected to the spindle of the screw drive so that the piston moves along with the spindle of the screw drive; and
a second housing component having the electric motor for driving the screw drive by the transmission gear set disposed on the first housing component or on the second housing component, the first housing component and the second housing component being fitted together, along an axis disposed parallel to the axial displacement direction of the piston, so that a flange embodied on the second housing component adjacent to the first housing component, which flange is congruent with the flange-shaped portion of the first housing component, is mounted on the flange-shaped portion of the first housing component, and the second housing component completely surrounds the transmission gear set.

8. The hydraulic assemblage of claim 7 , wherein a first hydraulic line, embodied at least in part as a recess, for the outflow of hydraulic fluid from the first housing component via the hydraulic assemblage to a compensating container, is embodied in the hydraulic assembly, which line is disposed, when the first housing component is in an installed state in the hydraulic assembly, so that it is connectable to a first opening embodied on a peripheral surface of the second, hollow-cylindrically embodied portion of the first housing component.

9. The hydraulic assemblage of claim 7 , wherein a second hydraulic line, embodied at least in part as a recess, for the outflow of hydraulic fluid from the first housing component via the hydraulic assembly to wheel brake cylinders of the braking system and/or for back-venting of hydraulic fluid from the compensating container via the hydraulic assemblage to the first housing component, is embodied in the hydraulic assembly, which line is disposed, when the first housing component is in an installed state in the hydraulic assembly, so that it is connectable to a second opening on a peripheral surface of the second, hollow-cylindrically embodied portion of the first housing component.

10. The hydraulic assemblage of claim 8 , wherein the first hydraulic line, embodied at least in part as a recess, for the outflow of hydraulic fluid from the first housing component via the hydraulic assembly to a compensating container, and the second hydraulic line, embodied at least in part as a recess, for the outflow of hydraulic fluid from the first housing component via the hydraulic assembly to wheel brake cylinders of the braking system and/or for back-venting of hydraulic fluid from the compensating container via the hydraulic assembly to the first housing component, are disposed substantially tangentially to the opening of the hydraulic assembly to receive the first housing component, and contact the opening directly or via an orifice disposed radially with respect to the opening of the hydraulic assembly.

11. A braking system for a motor vehicle, comprising:
a pressure generating apparatus; and
a hydraulic assemblage

Assignees

• Bosch Gmbh Robert

Inventors

• Weh Andreas
• Tandler Juergen
• Mayr Matthias

Classifications

• B60T17/02 Primary

  Arrangements of pumps or compressors, or control devices therefor · CPC title

• B60T8/4031 Primary

  Pump units characterised by their construction or mounting (pump units in combination with valve blocks B60T8/36) · CPC title

• B60T8/4086

  the stroke simulating device being connected to, or integrated in the driver input device · CPC title

• F04B9/047

  the means being pin-and-slot mechanisms · CPC title

• B60T8/4018

  Pump units characterised by their drive mechanisms (B60T8/4095 takes precedence) · CPC title