Braking system with improved robustness and mechanical strength
AssigneeHitachi Astemo France
InventorsPhilippe BOURLON, Rodrigue TRAMIS
Life of this patent
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Abstract
A clamping device for a braking system intended to exert a relative displacement between friction elements with the aid of an electric actuator having a mechanism for converting the rotational movement of an output shaft of the electric actuator into a translational movement of the ball-screw type having a nut coupled to a screw by balls, and a mechanism for radial and/or tangential decoupling of a stop, intended to receive a friction element, with respect to a free end of the screw of the conversion mechanism in order to improve the mechanical strength of the latter.
Claims14
A clamping device for a braking system configured to exert a relative displacement between friction elements comprising a frame supporting an electric actuator configured to supply a clamping force and a conversion mechanism for converting rotational movement of an output shaft of the electric actuator into a translational movement which is coupled to the electric actuator to allow the relative displacement movement between the friction elements along an axial rectilinear direction, wherein the conversion mechanism is a ball-screw type mechanism having a nut coupled to a screw by balls, and wherein the clamping device comprises a decoupling mechanism for radial and/or tangential decoupling of a stop configured to receive a friction element with respect to a free end of the screw of the conversion mechanism in order to improve the a mechanical strength of the conversion mechanism.
A braking system for a vehicle comprising a pair of the friction elements intended configured to cooperate by friction with a disc, comprising at least one clamping device according to claim to move the pair of the friction elements towards two opposite sides of the disc in order to clamp it.
Dependencies are inferred from the claim text.