FORCE SENSOR Russian patent published in 1999 - IPC

FIELD: force measuring technique; electronic balance, dynamometers and other measuring devices provided with force sensors. SUBSTANCE: force sensor has housing in form of parallelogram with cavity in its side wall where flexible beam with piezoelectric plates and generator are arranged. Transversal cavity of housing is made from one central and two symmetrical side through holes intersecting the central hole; diameter of side holes exceeds that of central hole. Central hole is used to receive flexible vertical beam provided with segment recesses formed by holes; it is also provided with through hole. Piezoelectric elements are mounted on beam at angle of 45 deg relative to longitudinal axis of housing; point of intersection of their axes coincides with center on hole. Side holes form flexible hinges together with upper and lower faces of housing. platform balance is secured on sensor housing in hole. EFFECT: simplified construction and ease in service. 1 dwg