Torque sensor

Details Torque sensor Torque sensor

2006-03-28

2008-09-16

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

C073S862332

Reexamination Certificate

active

07424830

ABSTRACT:
A torque sensor1is provided with two shafts3, 4(input shaft3and output shaft4) which constitute a shaft member2, which is a torque detection object, an elastic member5which connects the shafts3and4coaxially, and a torsion angle of the elastic member5is detected as a torque which affects on the shaft member2. The torque sensor1is provided with a hard magnetic member6which generates a magnetic flux therearound, a pair of first soft magnetic members7, 8which constitute a first magnetic circuit H1together with the hard magnetic member6to change a reluctance by torsion of the elastic member5, a pair of second soft magnetic members9, 10which constitute a second magnetic circuit H2together with the hard magnetic member6to keep the reluctance constant, and a flux detection means12which detects a flux density of the second magnetic circuit H2that varies in accordance with a torsion angle of the elastic member5.

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