SENSOR FOR MEASURING LONGITUDINAL FORCES Russian patent published in 2010 - IPC G01L1/22 

FIELD: physics.

SUBSTANCE: sensor for measuring longitudinal forces has terminal force-sensitive parts integrated with a middle detecting part having the shape of a rectangular parallelepiped. Lateral faces of the parallelepiped are square-shaped. There is a cylindrical through hole in the parallelepiped at the centre of the square. Inside the through hole there is a tensoresistor device comprising an elastic measurement bar with tensoresistors and two supports for the measurement bar and for transferring deformation of the detecting part of the sensor onto the said bar. An annular elastic element lies coaxial to the through hole in the plane of longitudinal symmetry of the sensor, where the said elastic element is rigidly connected to the detecting part by two jumpers lying symmetrical along the transverse axis of the annular elastic element. The width and thickness of the jumpers is equal the width of the elastic ring. The supports for the bar are rigidly attached to the inner surface of the annular elastic element in zones where the diagonal of the square-shaped lateral face intersects the inner wall of the said annular elastic element and is integrated with it.

EFFECT: design of a sensor for measuring longitudinal forces with high accuracy, with simultaneous action of the longitudinal force and torque about the longitudinal axis.

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