PROTECTION FOR A SET OF VACUUM-TYPE PNEUMATIC ACTUATORS

摘要

The invention relates to an actuating device, particularly for a motor vehicle (1), comprising a vacuum source (2) having an outlet (21) to which it applies a gas at a pressure below atmospheric pressure; actuators (3a, 3b) each having a vacuum pneumatic control inlet (31a; 31b) and pipes (4a, 4b) placing the outlet (21) in communication with the pneumatic control inlets (31a; 31b), characterized in that each pipe (4a; 4b) is placed in communication with a limiter (5a; 5b) that limits the vacuum applied to the control inlet of an actuator (3a; 3b) communicating with the source via this pipe (4a; 4b) and having an inlet (52a; 52b) for gas at atmospheric pressure in constant communication with an outlet (51a; 51b) opening into the pipe (4a; 4b), the said limiter (5a; 5b) having means (53a; 53b) designed to generate a pressure drop between its inlet and its outlet.