公开(公告)号：EP3077692A1

公开(公告)日：2016-10-12

申请号：EP14793833.6

申请日：2014-10-29

申请人： Robert Bosch GmbH

发明人： GERUNDT, Oliver ,  STUBNER, Armin ,  DOMMSCH, Hans-Peter ,  DEMONT, Stefan ,  FEIGL, Markus ,  BSUL, Jihad ,  DURIX, Lucas ,  CHENG, Fengmei ,  DREWE, Ingo ,  AUGIER, Jean-Luc ,  MARTIN, Norbert ,  KOERNER, Michael

IPC分类号： F16D28/00 ,  F16D23/12 ,  F16D25/12 ,  F16H25/08

CPC分类号： F16D28/00 ,  F16D23/12 ,  F16D25/12 ,  F16D29/005 ,  F16D2023/123 ,  F16H25/18

摘要： The invention relates to an actuator (13) for actuating a piston (17) of a hydraulic clutch actuator and how said actuator (13) can be used in a hydraulic system of an electrically actuatable clutch system for a motor vehicle. An electric motor (11) drives an actuating disc (55). A slotted guide structure (31) is arranged on the actuating disc (55). The slotted guide structure (31) forms a contact surface (33), the radius (r) of which increases in relation to an axis (65) from a minimum radius point (35) to a maximum radius point (37). An actuating rod (41) is engaged with a piston (17) of the clutch actuator and is supported on the first slotted guide structure (31) and guided in such a way that, with one rotation of the actuating disc (55), a pressure is exerted on the actuating rod (41) by the first slotted guide structure (31). A holding structure (31) is provided on the slotted guide structure, for example in the form of a recess (40), said holding structure being designed in such a way that, as a result of an effect of the holding structure (40), the actuating rod (41) maintains a position substantially maximally disengaged in relation to the clutch actuator (14). In this way, it is possible to maintain the actuator (13) in a state in which the clutch is disengaged without having to constantly supply the electric motor (11) with power. This can be beneficial, in particular energy-saving, in particular for a coasting functionality, wherein the clutch is to be kept open for longer periods of time.