Servomotor with a deformation-adjustable sleeve and setup for the adjustment of such sleeve

摘要

The invention provides a braking servomotor, comprising an actuating piston for a master cylinder, a resiliently returned control rod, sliding in the piston as a function of an input force, the end of said rod bearing a plunger on which a finger (52) is slidingly fitted so as to bias a reaction disk of the actuating rod and transmit the reaction of the piston to the control rod, and including a unidirectional clutch device, comprising a key (60) and a sleeve (58) incorporating the finger (52), said sleeve being slidably mounted on the plunger and capable, when the control rod is actuated at a given speed, of being locked in relation to the moving piston, independently of the control rod, characterised in that the sleeve (58) comprises a first and a second adjustable parts (104, 106) which can be axially plastically deformed for an adjustment of the servomotor prior to its assembly. ;The invention also provides a setup for the plastic deformation of said sleeve (58).