| 摘要 |
<p>The invention concerns a braking servo unit (10) comprising a piston (22) capable of stressing and slidably receiving an actuating rod (28) of a master-cylinder (36), comprising an elastic return control rod (38), sliding in the piston (22) depending on an input force, at the end of which is arranged a plunger (46) including at its front end a probe (52) capable of stressing a reaction disc (32) provided at the rear of the actuating rod (28) to transmit to the plunger (46) and the control rod (38) the reaction of the actuating rod (28). The invention is characterised in that it comprises a one-way clutch device which is capable, when an input force is exerted at a predetermined speed on the control rod (38), of locking the actuating rod (28) relative to the mobile piston (22) independently of the reaction disc (32), the plunger (46) and the control rod (38).</p> |
