Title:
VACUUM BRAKE FORCE BOOSTER WITH REDUCED NOISE EMISSION AND METHOD FOR MANUFACTURING A VACUUM BRAKE FORCE BOOSTER OF SAID TYPE
Document Type and Number:
WIPO Patent Application WO/2012/022395
Kind Code:
A3
Abstract:
The invention relates to a vacuum brake force booster (10) for a motor vehicle brake system, comprising: - a force input member which is movable along a longitudinal axis (A) and which is or can be coupled to a brake pedal, - a control valve arrangement (20) which can be actuated by the force input member (12), - a chamber arrangement (22) which is arranged in a housing (18) and which has at least one working chamber (24, 26) and at least one vacuum chamber (32, 34) separated from one another by means of a movable wall (28, 30) and which has a force output member (16) for transmitting an actuating force, wherein the at least one working chamber (24, 26) can be connected selectively to a vacuum source or to the atmosphere, wherein the control valve arrangement (20) has a control valve housing (18) which is coupled to the at least one movable wall (28, 30) for conjoint movement therewith, wherein the control valve arrangement (20) has a force-transmitting arrangement which has a degree of axial play and which is arranged in the force transmission path between the force input member (12) and the force output member (16). Here, for noise reduction, it is provided that at least one component (54, 56, 58, 62, 64) of the force-transmitting arrangement is manufactured from magnetic or ferromagnetic material and is subjected to a permanently applied magnetic field.
Inventors:
FREY KARL-HEINZ (DE)
EICK RUEDIGER (DE)
EICK RUEDIGER (DE)
Application Number:
PCT/EP2011/003388
Publication Date:
April 19, 2012
Filing Date:
July 07, 2011
Export Citation:
Assignee:
LUCAS AUTOMOTIVE GMBH (DE)
FREY KARL-HEINZ (DE)
EICK RUEDIGER (DE)
FREY KARL-HEINZ (DE)
EICK RUEDIGER (DE)
International Classes:
B60T13/563
Foreign References:
| EP1231122A1 | 2002-08-14 | |||
| DE102008025712A1 | 2009-12-03 |
Attorney, Agent or Firm:
THUM, Bernhard (Schweigerstrasse 2, München, DE)
Download PDF:
Previous Patent: BOX-SHAPED ELECTRIC CONTROL CABINET WHICH CAN BE CLOSED BY A COVER, FOR A WIND ENERGY POWER PLANT
Next Patent: ON-LOAD TAP CHANGER
Next Patent: ON-LOAD TAP CHANGER