Torque sensor of noncontact type

Details Torque sensor of noncontact type Torque sensor of noncontact type

G - Physics

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G01L 3/00 (2006.01) G01L 3/10 (2006.01)

Patent

CA 1222396

- 22 - Abstract of the Disclosure In a torque sensor of a noncontact type for sensing a torque applied to a shaft, a magnetic ribbon is bonded to a circumferential portion of the peripheral surface of the shaft, and a core member made of a magnetic material is arranged above the shaft surface so that its end faces are faced to the magnetic ribbon. A exciting coil and a detecting coil wound around the core so that a magnetic flux produced by the exciting coil and delivered to the detecting coil is detected by the detecting coil. The magnetic ribbon has a length LO equal to or smaller than one half of the circumferential length Ls of the shaft 4 and satisfying an inequality given by Ll < LO < 2Ll where Ll is the center-to-center distance between the dn faces of the core.

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