MAGNETIC FLUX DENSITY DETECTOR FOR ELECTROMAGNETIC CLUTCH

摘要

PROBLEM TO BE SOLVED: To compensate the deterioration of detection accuracy of magnetic flux density caused by the inclination of an electromagnetic clutch armature and also facilitate the wiring of harness in case of using a plurality of sensor coils for connecting therewith. SOLUTION: The electromagnetic clutch is constituted by that a core 21L fitted with an exciting coil 22L is confronted with an armature 23L so that the armature is attracted to the core 21 to transmit torque when the exciting coil 22L is conducted; sensor coils 35L are embedded respectively in a plurality of recessed parts 21a formed on the main surface 21c of the core 21L apart from one another in the peripheral direction, an annular harness 46L for connecting the plurality of sensor coils 35L with one another is attached to the end surface of a coil cover 45L, and an annular groove 23b is formed on the main surface 23a of the armature 23 to avoid the interference with the harness 46L.