EP 2137035 A1 20091230 - ELECTROMECHANICAL BRAKE SERVO
Title (en)
ELECTROMECHANICAL BRAKE SERVO
Title (de)
ELEKTROMECHANISCHER BREMSKRAFTVERSTÄRKER
Title (fr)
SERVOFREIN ÉLECTROMÉCANIQUE
Publication
Application
Priority
- EP 2008052283 W 20080226
- DE 102007018469 A 20070419
Abstract (en)
[origin: WO2008128811A1] The invention relates to an electromechanical brake servo (7) for a master brake cylinder (1) of a hydraulic vehicle braking system. The invention provides to configure the brake servo (7) such that it preferably comprises a switchable freewheel (12), which enables an actuation of the master brake cylinder (1) without any movement of the electric motor (8) of the brake servo (7). The invention further provides to configure the brake servo (7) such that it comprises a mechanical gear having a variable transmission ratio, which has a high path transmission at the beginning of an actuation of the master brake cylinder (1), and a force transmission that rises with increasing actuation. A variable gear ratio is possible using a rack and pinion gear (9), the toothed rack (10) of which has a toothing with a pitch that changes across the length of the toothed rack (10). A further possibility of a mechanical gear having a variable ratio is a toggle lever mechanism (not illustrated).
IPC 8 full level
B60T 7/04 (2006.01); B60T 13/74 (2006.01)
CPC (source: EP US)
B60T 7/042 (2013.01 - EP US); B60T 13/745 (2013.01 - EP US)
Citation (search report)
See references of WO 2008128811A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102007018469 A1 20081023; EP 2137035 A1 20091230; JP 2010524754 A 20100722; US 2010126167 A1 20100527; WO 2008128811 A1 20081030
DOCDB simple family (application)
DE 102007018469 A 20070419; EP 08717117 A 20080226; EP 2008052283 W 20080226; JP 2010503433 A 20080226; US 59610808 A 20080226