Vehicle wheel speed sensor employing a locating plate

Details Vehicle wheel speed sensor employing a locating plate Vehicle wheel speed sensor employing a locating plate

G - Physics

01

P

G01P 3/48 (2006.01) G01P 3/488 (2006.01)

Patent

CA 2082095

A vehicle wheel speed sensor of the type using permanent magnets to generate a magnetic field having a magnetic path which is conducted through a plurality of teeth on a rotor into a plurality of teeth on a stator with relative motion therebetween where the frequency of the change in the magnetic reluctance varies at a frequency proportional to the wheel speed. The stator is mounted to the end of the axle spindle by way of a securing bolt so that the stator can be easily removed for service without disturbing the axle bearings. As a part of the stator assembly a locating plate is provided which allows the operating gap between the rotor and the stator to be easily established upon assembly of the hub cap to the wheel hub by allowing the rotor to contact the locating plate when the hub cap securing bolts have been loosened and the axle is supported.

Cette invention concerne un capteur de vitesse de rotation d'une roue de véhicule mettant en oeuvre des aimants permanents pour générer un champ magnétique dont la trajectoire passe par une série de dents d'un rotor vers une série de dents d'un stator, la fréquence de variation de la réluctance magnétique étant proportionnelle à la vitesse de rotation de la roue. Le stator est monté à boulon au bout de la fusée d'essieu de manière à pouvoir s'enlever facilement pour entretien sans avoir à déposer les roulements. Le stator comprend une plaque de repérage qui permet de régler aisément le jeu entre le rotor et le stator au montage du chapeau de moyeu, le rotor étant en contact avec ce dernier lorsque les boulons de fixation de celui-ci sont desserrés et que l'essieu est supporté.

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