HYDRAULIC ACTUATOR IN PARTICULAR FOR ENGAGING A TUBE GUIDE INTEGRAL WITH AN EXTERNAL BODY

摘要

The present invention relates to a hydraulic actuator (particularly for a clutch) for receiving a control signal in the form of a pressure change from the hydraulic circuit. The concentric actuator 8 for hydraulic control is mounted on a fixed part 9 consisting of a cylindrical and coaxial outer body 21 and a guide tube 22, and mounted on a fixed part 9 sliding coaxially. A piston 11 forming a chamber in the piston having a variable volume 13 designed to be connected to a control hydraulic transmitter; The outer body 21 has a groove on the inner surface 35, in which the radial edge 31 is formed at one end of the guide tube 22 and partially constitutes the bottom of the variable volume chamber 13. Is inserted.