Brake unit; has space inside casing part for electrorheological fluid to surround moving part in casing part, and has flexible balancing wall to compensate for temperature variation of fluid

摘要

The unit has a fluid space formed in a space inside a casing part surrounding a moving part held in the casing part, to hold an electrorheological fluid. A balancing wall (5) surrounds the electrorheological fluid and bends under the pressure of the electrorheological fluid, to compensate for temperature-dependent volume variations of the electrorheological fluid.