Bearing rotary speed sensor with concentric multipole magnetic rings axially aligned with collector branches

A sensor device of speed of rotation of a rotating member mounted by way of a roller bearing on a non-rotating member, said device comprising a coder element (11) rigid with the rotating race (6) of the bearing and producing an alternating magnetic field and a sensor element (12) rigid with the non-...

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Bibliographische Detailangaben
Hauptverfasser:	LHOTE, PASCAL, RIGAUX, CHRISTIAN
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT LIGHTING MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MECHANICAL ENGINEERING PHYSICS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS TESTING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A sensor device of speed of rotation of a rotating member mounted by way of a roller bearing on a non-rotating member, said device comprising a coder element (11) rigid with the rotating race (6) of the bearing and producing an alternating magnetic field and a sensor element (12) rigid with the non-rotating race (7) of the bearing and arranged facing the coder element with an air gap, the coder element (11) comprising two axially magnetized concentric multipole rings (14, 15), and the sensor element (12) comprising an induction coil (17) coaxial with the multipole rings cooperating with a magnetic flux concentrator (18) whose collector branches (20, 21) are oriented axially facing said multipole rings (14, 15) of the coder element. Application to motor vehicle wheel hubs equipped with an ABS system.