Title:
TORQUE SENSOR
Document Type and Number:
Japanese Patent JPS63124927
Kind Code:
A
Abstract:
PURPOSE:To facilitate manufacture and to reduce a cost by transducing strain generated on the surface of a rotary shaft owing to torque into variation in the magnetic permeability of amorphous magnetic alloy and detecting it as variation in the inductance of a coil. CONSTITUTION:The amorphous magnetic alloy 2 which has magnetic strain is fixed on the surface of the rotary shaft 1 which transmits the torque and a soft magnetic metallic layer 3 which has plural thin and long holes at a constant angle to the thrust direction of the shaft is formed on the surface of this amorphous magnetic alloy 2. The coil 4 is wound and fixed further outside concentrically with the rotary shaft 1 while a constant gas is left. The strain generated on the surface of the rotary shaft 1 owing to the torque is transduced into variation in the magnetic permeability of the amorphous magnetic alloy 2 and detected as variation in the inductance of the coil 4.
Inventors:
HASE HIROYUKI
YAMASHITA ICHIRO
TOKUONO SHINYA
WAKAMIYA MASAYUKI
YAMASHITA ICHIRO
TOKUONO SHINYA
WAKAMIYA MASAYUKI
Application Number:
JP27249286A
Publication Date:
May 28, 1988
Filing Date:
November 14, 1986
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G01L3/10; (IPC1-7): G01L3/10
Attorney, Agent or Firm:
Toshio Nakao