Hydraulic cylinder control device controlled by an electric motor, in particular for the clutch of a motor vehicle.

摘要

PCT No. PCT/FR95/00821 Sec. 371 Date Feb. 20, 1996 Sec. 102(e) Date Feb. 20, 1996 PCT Filed Jun. 20, 1995 PCT Pub. No. WO95/35452 PCT Pub. Date Dec. 28, 1995A control device including an electric motor (11), which acts through a transmission (12) on a piston (13) of an actuator (14), a resilient assistor (15) which acts on a member (16) of the transmission (12), and a compensator (17) which provides controlled modulation of the action of the resilient assistor (15) on the member (16). The compensator (17) has at least one train of rollers (37), which are mounted for rotation about a fixed axis (A2) which includes, spaced away from the latter, a roller (38A) making contact with a plate (39A) which is fixed to the member (16) of the transmission (12), and a roller (38B) making contact with a plate (39) on which the resilient assistor (15) bears, and which is moveable axially with respect to the plate.