Torque sensor and method for manufacturing the same

Details Torque sensor and method for manufacturing the same Torque sensor and method for manufacturing the same

1983-09-29

1986-12-30

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Assembling or joining

29447, 7386236, B23P 1102, G01L 302

Patent

active

046317961

ABSTRACT:
There are disclosed a torque sensor having a rotary shaft and a thin strip of an amorphous magnetic alloy which has a great magnetic strain constant windingly fixed on the rotary shaft and detecting a torque in a non-contact style by a variation in magnetic properties of the thin strip of the amorphous alloy, characterized in that the amorphous alloy is an iron-based amorphous alloy having a crystallization temperature of 450.degree. C. or more, and a method for manufacturing the same, characterized in that an inductive magnetic anisotropy had been previously given to the thin strip and then the thin strip is windingly fixed on the rotary shaft.
The torque sensor according to the present invention permits measuring a large torque with a good accuracy in an extensive temperature, and is manufactured with ease.

REFERENCES:
patent: 4149911 (1979-04-01), Clabburn
patent: 4236946 (1980-12-01), Aboaf et al.
patent: 4364278 (1982-12-01), Horter et al.
patent: 4414855 (1983-11-01), Iwasaki
"Magnetic Anisotropy of Amorphous (Fe.sub.1-x Co.sub.x).sub.78 Si.sub.10 B.sub.12 Alloys", 2318 Applied Physics, vol. 20, No. 2 (1979), pp. 125-127.
K. Harada et al., "A New Torque Transducer Utilizing Amorphous Ribbons," MAG-81-72 (1981) Electrical Society of Japan.
W. J. Flemming et al, "Noncontact Miniature Torque Sensor for Automotive Application," SAE Technical Paper Series, 820206, 1982.

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