Wheel action force detector for detecting axle forces absent brake torque

Abstract

A device for measuring action force of a wheel includes a vehicle axle upon which the wheel is mounted, the vehicle axle having a stress neutral line, and a stress detecting sensor having at least one strain gauge. The stress detecting sensor is disposed within the vehicle axle so as to detect at least one of a horizontal shear stress and a vertical sheer stress with the at least one strain gauge being one of aligned with or proximate the stress neutral line thereby permitting substantial removal of axle torque influence from an output of the stress detecting sensor. A signal processing circuit processes the output of the stress detecting sensor.

What is claimed is:  
     
         1 . A device for measuring action force of a wheel characterized in that a vehicle axle is formed with a hole, a stress detection sensor is installed in said hole and secured therein through a spacer means, and a detection signal from said stress detection sensor is processed in a signal processing circuit.