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1. (WO2018077464) SELF-ADJUSTING PNEUMATIC CLUTCH ACTUATOR

Pub. No.:    WO/2018/077464    International Application No.:    PCT/EP2017/001207
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Oct 14 01:59:59 CEST 2017
IPC: F16D 25/08
F16D 25/12
Applicants: WABCO EUROPE BVBA
Inventors: BRAJDIC, Ivan
CALLESEN, Matthias
EISFELDER, Stephan
KLÜCK, Frank-Peter
SCHULZ, Tobias
WILLMS, Jens
Title: SELF-ADJUSTING PNEUMATIC CLUTCH ACTUATOR
Abstract:
The invention relates to a self-adjusting pneumatic clutch actuator (10) for actuating a clutch of a motor vehicle. Said clutch actuator comprises an annular cylindrical housing (20) which is axially open at one end, and an annular piston (24) which is slidably mounted in said housing, a pressure compartment (26) being defined between them, and the annular piston (24) being connected to a clutch release bearing (18). Said clutch release bearing axially abuts a clutch spring (12) to transfer same from a non-actuation position to an actuation position, in which positions the clutch is closed or open. The clutch actuator further comprises a device for compensating the clutch-wear-related change in actuation path for opening or closing the clutch. The device further comprises a spindle (32) which can freely rotate when the clutch actuator (10) is not actuated and which is blocked when the clutch actuator is actuated.