Patent ID: 8327722

Claim:
A rotary torque detecting device comprising: a first rotating body for rotating about a rotary axis in synchronization with a steering member; a magnet secured to the first rotating body; a second rotating body disposed axially below the first rotating body; a first magnetic body disposed radially outwardly of the magnet so as to face radially inwardly toward an outer periphery of the magnet; a second magnetic body disposed axially below the first magnetic body and radially outwardly of the magnet so as to face radially inwardly toward the outer periphery of the magnet; a connecting body having an upper end secured to the first rotating body and a lower end secured to the second rotating body; third magnetic body arranged radially outwardly of the magnet and radially inwardly of the first and second magnetic bodies; and a magnetic detecting element disposed axially between the first magnetic body and the second magnetic body; wherein the third magnetic body is rotatably displaceable relative to the magnet upon rotation of the first rotating body to cause the magnet to generate magnetic flux in the first, second and third magnetic bodies; and wherein the magnetic detecting element is configured for detecting the magnetic flux generated in the first, second and third magnetic bodies, in order to allow for detection of torque between the first and second rotating bodies.