Braking system including motor-driven disc brake equipped...

F - Mech Eng,Light,Heat,Weapons – 16 – D

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F16D 65/16 (2006.01) B60T 7/04 (2006.01) B60T 13/74 (2006.01) F16D 55/224 (2006.01) F16D 55/227 (2006.01) F16D 65/092 (2006.01) F16D 65/097 (2006.01) F16D 65/14 (2006.01) F16D 65/18 (2006.01) F16D 65/78 (2006.01) F16D 65/847 (2006.01) F16D 55/00 (2006.01) F16D 66/00 (2006.01)

Patent

CA 2267212

Electrically operated braking system with a motor-driven disc brake including an electric motor (212) for braking an automotive vehicle wheel, and a motor control device (100) for controlling the electric motor, the disc brake further including a disc rotor (11; 212) having a friction surface (12), a friction pad (14a; 14b) movable for contact with the friction surface to restrict rotation of the disc rotor, a pad support mechanism (152) for supporting the friction pad movably in a direction intersecting the friction surface, a pad pressing mechanism (202, 212, 214) including the electric motor and a pressing member (202; 216), the electric motor producing a drive force for moving the pressing member to force the friction pad against the disc rotor, and a self-servo mechanism (220) for providing a self-servo effect of boosting a friction force generated between the friction surface and the friction pad, on the basis of the friction force.

L'invention concerne un système de freinage à commande électrique présentant un frein à disque commandé par un moteur comprenant un moteur électrique (212) destiné à freiner une roue de véhicule automobile, ainsi qu'un dispositif de commande (100) du moteur destiné à commander ledit moteur électrique, le frein à disque comprenant également un rotor (11; 212) de disque comportant une surface de friction (12), une plaquette (14a; 14b) de frein à disque mobile de manière à venir au contact de la surface de friction afin de réduire la rotation du rotor du disque, un mécanisme (152) de support de plaquette destiné à porter la plaquette du frein à disque de façon mobile dans une direction venant en intersection avec la surface de friction, un mécanisme (202, 212, 214) de pression de la plaquette comprenant le moteur électrique et un élément de pression (202; 216), le moteur électrique produisant une force d'entraînement destinée à déplacer l'élément de pression afin de forcer la plaquette à venir contre le rotor du disque, et un mécanisme autoserreur (220) destiné à produire un effet autoserreur d'amplification d'une force de friction générée entre la surface de friction et la plaquette du frein à disque, sur la base de la force de friction.

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