Master brake cylinder system and brake system for a vehicle

Patent metadata

Field	Value
Publication number	US-9964128-B2
Application number	US-201414284118-A
Country	US
Kind code	B2
Filing date	May 21, 2014
Priority date	May 24, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A master brake cylinder system having a master brake cylinder housing having at least one first pressure chamber and a second pressure chamber, a rod piston at least partially displaceable into the first pressure chamber, a floating piston situated between the first pressure chamber and second pressure chamber, and a simulator device having a simulator piston, which is at least partially displaceable into the simulator chamber counter to a spring force of at least one simulator spring present in a simulator chamber, the simulator piston of the simulator device being situated as to the second pressure chamber so that the simulator piston is displaceable at least partially into the simulator chamber, using a pressure present in the second pressure chamber against the spring force of the at least one simulator spring. In addition, also described is a brake system for a vehicle having a master brake cylinder system.

First claim

What is claimed is:

1. A master brake cylinder system, comprising:
a master brake cylinder housing having at least one first pressure chamber in it and a second pressure chamber in it;
a rod piston that is at least partially displaceable into the first pressure chamber;
a floating piston situated between the first pressure chamber and the second pressure chamber; and
a simulator device having a simulator piston, which is at least partially displaceable into a simulator chamber against a spring force of at least one simulator spring that is present in the simulator chamber, wherein the simulator device includes at least one separating valve, via which the simulator chamber is linkable hydraulically only to a brake fluid reservoir, and wherein the simulator device includes at least one other valve, via which the simulator chamber is linkable hydraulically only to at least one pump;
wherein the simulator piston of the simulator device is situated with respect to the second pressure chamber so that the simulator piston, using a pressure present in the second pressure chamber, is displaceable at least partially into the simulator chamber against the spring force of the at least one simulator spring.

2. The master brake cylinder system of claim 1 , wherein the at least one simulator spring includes a rubber spring.

3. The master brake cylinder system of claim 1 , wherein the simulator chamber has a first diameter aligned perpendicularly to a first displacement direction of the simulator piston, which is greater than a second diameter, of the second pressure chamber, which is aligned perpendicularly to a second displacement direction of the floating piston.

4. The master brake cylinder system of claim 1 , wherein the simulator device is integrated at least partially into the master brake cylinder housing, and wherein the simulator piston is situated displaceably between the simulator chamber in the master brake cylinder housing and the second pressure chamber in the master brake cylinder housing.

5. The master brake cylinder system of claim 4 , wherein the at least one simulator spring is supported on a side directed away from the simulator piston on an element, which is fastened at a distance from a cap that is mounted on the master brake cylinder housing in the simulator chamber.

Assignees

• Bosch Gmbh Robert

Inventors

• Kistner Matthias

Classifications

• B60T8/4081

  Systems with stroke simulating devices for driver input (B60T8/4077 takes precedence) · CPC title

• B60T13/686

  in hydraulic systems or parts thereof · CPC title

• B60T13/662

  characterised by specified functions of the control system components · CPC title

• B60T11/16

  Master control, e.g. master cylinders (master cylinders associated with vacuum boosters B60T13/565) · CPC title

• B60T13/146

  Part of the system directly actuated by booster pressure · CPC title