LOAD CELL

PROBLEM TO BE SOLVED: To provide a load cell constituted so that each strain generating part has the same thickness, and two arm parts have a thickness difference so as to reduce an influence of deflection of the strain generating part, in a Roberval type load cell wherein a strain gage is pasted on the strain generating part formed on one arm part. SOLUTION: In this load cell wherein a Roberval mechanism is formed from two parallel arm parts formed between a fixed end and a movable end and four strain generating parts two parts of which are connected to each of the two arm parts respectively, all the four strain generating parts are formed with the same thickness, and since the two arm parts comprise a first arm part wherein each strain gage is pasted on two connected strain generating parts respectively, and a second arm part formed to have a thinner thickness than the first arm part, a strain applied to the strain generating part on which the strain gage is pasted can be balanced by the second arm part. COPYRIGHT: (C)2010,JPO&INPIT