DEVICE FOR DETECTING DISPLACEMENT OF REVOLVING SHAFT

PURPOSE:To transmit precisely a signal without contact with comparatively simple constitution by providing the titled device with the 1st coil wound around one of a driving shaft or a driven shaft and the 2nd coil fixed on a bearing and wound around the periphery of the 1st coil. CONSTITUTION:The driving shaft 1 is pivotally held in the cylindrical bearing 10. An insulating member 11 surrounding a part of the driving shaft 1 like an arc is formed on the leading end part of the driving shaft 1 projected from the bearing 10, and two detecting coils LA, LB are fixed on the top part of the leading end side. A discoid printed plate 12 for fitting circuit parts for a displacement detecting circuit part to the other end side of the insulating member 11 is fixed on the driving shaft 1. Said constitution makes it possible to transmit a signal without contact with comparatively simple constitution.