Disclosed is a torque sensor unit including a magnetic member fixed to a first output shaft member, a pair of first and second yoke members fixed to an input shaft member and surrounding an outer circumferential side of the magnetic member and a magnetic sensor adapted to detect a magnetic flux passing through between the yoke members. The magnetic member is provided with a sleeve and a permanent magnet. The sleeve is formed of a metal material in a substantially cylindrical shape and has a plurality of radially extending support portions and a plurality of axially extending engagement protrusions between the support portions. The permanent magnet is formed into an annular shape and has a plurality of axially extending engagement grooves cut in an inner circumferential surface thereof. The permanent magnet and the sleeve are coupled via a resin-based filling material.
TORQUE SENSOR UNIT
2015-07-30
Patent
Electronic Resource
English