WEIGHT SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a weight sensor allowing all resistance values of four resistances in a bridge circuit to change together with the deformation of a board and capable of improving output sensitivity. SOLUTION: A second board 42 is provided substantially in parallel with a first board 20 provided with a first strain resistance element 25 and a second strain resistance element 26 on a surface thereof, and a free end 23 in the first board 20 is continuously joined with a free end 46 in the second board 42 by a pressing member 33 so that the first board 20 and the second board 42 move substantially in parallel to improve output sensitivity.