Pressure and/or depression actuator for controlling and guiding in translation displacement of rod in automobile industry, has lid whose clamping surface exerts radial effort at level of contact zones on membranes near its peripheries

摘要

The actuator (1) has a body (3) and a lid (10) adapted to maintain flexible membranes integrated to a rod (2) in a position. The membranes and the body comprise conical contact zones arranged coaxially with respect to an axis (7) of the rod, where top of each conical zone is positioned from a side of the actuator with a free end (8) of the rod. The lid comprises a radial clamping surface exerting radial effort at the level of the contact zones on the membranes near its peripheries.