| 摘要 |
PURPOSE:To eliminate the influence of hysteresis by fitting a pivot with a constant clearance. CONSTITUTION:When a load is impressed on a receiving pan 7, a load transmission part 5 deforms and the load is transmitted to a beam body 4. Consequently, the beam body 4 deforms and a strain gauge 15 varies in resistance value on the basis of the deformation and outputs an electrical signal corresponding to the load. Thus, the beam body 4 deforms when the load is impressed, so the joint part of the pivot 17 and a coupling shaft 22 changes in joint state. This change operates as a force which is not in the vertical direction and when this force is generated, a lateral component of force operated on the pivot 17, which moves within the clearance of pivot holes 12 and 16, eliminating an abnormal frictional force based upon the lateral component of force. Consequently, the same is obtained at the time of an increased load and a decreased load as far as the load is the same. Therefore, the influence of hysteresis is eliminated. |
