Non -contact torque sensor

The utility model provides a non -contact torque sensor, includes that magnetic force produces part and magnetic force conduction part. Magnetic force produces the part and includes that a plurality of radial directive magnet of evenly distributed on same circumference is right. Magnetic force conduction part is having the inner ring yoke of a plurality of magnetism conduction internal tooth and the outer loop yoke that has a plurality of magnetism conduction external tooth respectively including installing the two rings shape yoke of coaxial phase to setting up on same non - magnetic materials's skeleton. Torque sensor gathers the magnetic field of magnet to producing in the subassembly by multiunit magnetic force, conducts the tooth through magnetism and to conducting to inner ring yoke, outer loop yoke, drawing yoke and air gap among them, has constituted a closed magnetic circuit. The right internal tooth of magnetism conduction tooth sets up radially respectively in the right inboard and the outside of m