LOAD SENSOR USING QUARTS OSCILLATOR

摘要

PROBLEM TO BE SOLVED: To provide a load sensor improved in sensitivity by preventing the occurrence of a mechanical deformation in a direction perpendicular to the plate surface of a quart piece and detecting a varying frequency of oscillation only caused by the load. SOLUTION: The load sensor using a quarts oscillator measures the load in such a manner that a tractive force corresponding to the load is applied to opposite periphery sections of the quartz piece, and the varying frequency of oscillation on the basis of the stress sensitivity of the quartz piece in the tractive direction is detected. The opposite periphery sections of the quartz piece are formed as a holding section so that its thickness is larger than that of the oscillating section in a central region.