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1. (WO2018203003) DRUM BRAKE ACTUATOR WITH AT LEAST PARTIALLY ELECTRIC ACTUATION AND IN-BUILT PLAY COMPENSATION FUNCTION

Pub. No.:    WO/2018/203003    International Application No.:    PCT/FR2018/051103
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Fri May 04 01:59:59 CEST 2018
IPC: F16D 51/22
F16D 65/56
F16D 125/40
F16D 121/24
Applicants: FOUNDATION BRAKES FRANCE
Inventors: HACLIN, Léna
DUPAS, Christophe
Title: DRUM BRAKE ACTUATOR WITH AT LEAST PARTIALLY ELECTRIC ACTUATION AND IN-BUILT PLAY COMPENSATION FUNCTION
Abstract:
Actuator for a drum brake comprising a screw-nut system activated by an electric motor, said screw-nut system extending along a longitudinal axis (X2), a first end (16.1) of the screw (16) protruding from the nut (12) and pressing against a shoe of the drum brake and moving longitudinally (X2), and an adjusting element (24), mounted in the nut (12) and collaborating with the nut (12). The adjusting element (24) is immobilized in terms of rotation by the screw in a first direction of travel in which the screw (16) comes out of the nut, when the screw (16) has covered at least a given travel in the first direction (F1) and the adjusting element (24) forms a longitudinal end stop limiting the movement of the screw (24) in the nut (12) in a second direction (F2), when the screw (16) has covered the given distance in the second direction (F2).