Brake actuator with self-centering diaphragm

Details Brake actuator with self-centering diaphragm Brake actuator with self-centering diaphragm

F - Mech Eng,Light,Heat,Weapons

01

B

F01B 19/00 (2006.01) F16J 3/00 (2006.01)

Patent

CA 2278611

Brake actuators are provided with self-centering diaphragms (44). In one embodiment, the diaphragm (44) is provided with a centering bead (52) radially outwardly of a sealing bead (50). The centering bead (52) ensures the diaphragm (44) is properly centered prior to the brake actuator housings (42, 46) being secured together. In a second embodiment, the self-centering structure (50) includes structure fit into mating structure (56) in one of the brake actuator housings to ensure the diaphragm (44) is properly centered. The self-centering structure (50) ensures the brake actuator diaphragms are properly centered before connection of the two brake actuator housings (42, 46). This invention is particularly useful in the type of brake actuator housings having deformed housing portions.

L'invention concerne des actionneurs de frein à membrane (44) à centrage automatique. Dans un mode de réalisation, la membrane (44) présente un bourrelet de centrage (52) disposé radialement à l'extérieur d'un bourrelet d'étanchéité (50). Le bourrelet de centrage (52) assure le centrage correct de la membrane (44) avant que les boîtiers (42, 46) de l'actionneur de frein ne soient fixés ensemble. Dans un second mode de réalisation, la structure (50) de centrage automatique comprend un ajustement de structure dans une structure d'appariement (56) dans un des boîtiers de l'actionneur de frein destiné à assurer le centrage correct de la membrane (44). La structure (50) de centrage automatique assure que les membranes de l'actionneur de frein sont centrées correctement avant le raccordement des deux boîtiers (42, 46) de l'actionneur de frein. Cette invention est particulièrement utile dans le type de boîtiers d'actionneur de frein présentant des parties déformées.

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