G - Physics – 01 – P
Patent
G - Physics
01
P
G01P 3/44 (2006.01) B60T 8/171 (2006.01) G01P 3/487 (2006.01)
Patent
CA 2114064
A vehicle wheel speed sensor incorporated on an axle spindle (10) hub (18) and hub cap (22) assembly of the type using permanent magnets (56) to generate a magnetic field having a magnetic path (57) conducted through a plurality of teeth (32) on a flange {19) extending from the hub cap (22) into a plurality of teeth (37) on a stator (36) with relative motion therebetween upon rotation of the wheel where the frequency of the change in the magnetic reluctance varies at a frequency proportional to the wheel speed. The stator (36) is mounted to the end of the axle spindle (10) by a securing bolt (52) so that the stator (36) can be easily removed for service without disturbing the axle bearings (14). As a part of the stator (36) assembly, a locating plate (46) is provided which allows the operating gap between the teeth (32) formed in the flange (19) and the teeth (37) formed in the stator (36) to be easily established upon assembly of the hub cap (22) to the wheel hub (18) by allowing the rotor (30) to contact the locating plate (46) when the hub cap securing bolts (24) have been loosened and the axle is supported. The flange (19) pilots on the inner annular surface in the wheel hub (18) thereby reducing the cost of assembly and improving overall functionality.
Borden Ladner Gervais Llp
Corporation Eaton
Dana Corporation
LandOfFree
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