Brake system with application in the automotive sector which does not generate polluting waste

A brake system (100) for the automotive sector, electrically actuated and wherein the braking effect is produced on a rotation shaft (1),

• characterised in that it comprises:
• at least one piston (4) actuated by means of a respective electric linear actuator (3) through which the piston (4) is able to move a certain distance forwards and backwards between a retracted release position and a final extended braking position;
• a casing (6) provided with a central through hole surrounded by an inner wall (61) of the casing (6), adapted for the integral coupling thereof to the rotation shaft (1), the walls of the casing (6) configuring a cavity laterally closed by a cover (5) that extends in a direction perpendicular to the rotation shaft (1) and provided with a hole (51) for the rotation shaft (1) to pass therethrough but
• without integral coupling thereto, the cover (5) being provided with at least one opening in which the at least one piston (4) is fitted, closing said opening, and the at least one piston (4) having the ability to move forwards into the closed cavity and move backwards, the at least one electric actuator (3) that actuates the at least one piston (4) being fixedly coupled to the cover (5),
• a filling, arranged occupying the entire closed cavity formed by the casing (6), the cover (5) and the at least one piston (4), with the ability to rotate integrally with the casing (6), consisting of a dispersion (7) or amalgam formed by a combination of a powdery or granular product, with a particle size comprised between 45 μm and 1 mm, and more preferably of 0.2 mm spherical, with a lubricating agent present between 1% and 25%
• by weight with respect to the dispersion (7) or amalgam;
• so that in a non-operating position of the brake system (100), the rotation shaft (1) is capable of rotating the at least one piston (4) being in a retracted release position and wherein the front surface, oriented towards the closed cavity, of the at least one piston (4) is flush with the inner surface of the cover (5) facing the closed cavity;
• and in a progressive brake operating position of the brake system (100), the at least one piston (4) passes into extended braking positions wherein the front surface of the at least one piston (4) progressively enters into the filling of the closed cavity, moving the filling until it is compressed in a final extended braking position, the filling moving, occupying the space of the cavity left by the at least one piston (4) in the backward movement thereof when returning to the non-operating position, the cavity being kept closed at all times by the at least one piston (4) in any of the positions.