Magneto-striction type torque sensor

Abstract

Abstract PURPOSE:To detect both the magnitude and direction of torque simultaneously by a magneto-striction film having a single constitution, by providing a plurality of slits in the direction, which is inclined to the direction of torsional torque that is applied to a shaft, on the magneto-striction film that is provided on the surface of the shaft. CONSTITUTION:A magneto-striction film 23 having a rectangular shape as a whole, in which a plurality of slits 23a are provided in the slant direction, is bonded to the surface of a shaft 22 of a magneto-striction type torque sensor 21. An exciting coil 24 and a detecting coil 25 are arranged in the vicinity of the outer surface of the magnetostriction film 23. At the outside of the coils 24 and 25, a cylindrical yoke 27 comprising a high permeability material is provided with a gap 26 being provided between the shaft 22 and the yoke. In this constitution, both the magnitude and direction of the torque that is applied to the shaft 22 can be simultaneously detected.

Inventors

• 👤 Shoichi Edo
• 👤 江戸　昇市
• 👤 Munekatsu Shimada
• 👤 宗勝 島田
• 👤 Hiroyuki Aoki
• 👤 青木　博幸

Bibliographic Details