Wheel speed detecting device

Details Wheel speed detecting device Wheel speed detecting device

G - Physics

01

P

G01P 3/487 (2006.01)

Patent

CA 2727216

An object is to provide a wheel speed detecting device with a countermeasure against entrance of mud water. An annular recess groove is provided in an outer circumference of an end portion of a hub on a sensor side. Moreover, a cup- shaped flange portion extends from the sensor supporting member, the flange portion covering the annular recess groove while maintaining a predetermined gap T1 between the flange portion and the outer circumference of the end portion of the hub. Mud water heads toward a multi-pole magnet ring by running through the gap T1 formed between the flange portion and the outer circumference of the hub. However, entrance of mud water can be effectively prevented by making the gap T1 small. Mud water still entering the gap T1 is trapped in the annular recess groove.

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