Sensor fastening device for measuring temperature in electric machine of motor vehicle

The invention relates to a sensor fastening device (10) for measuring a temperature in an electric machine for driving a motor vehicle, comprising: a holding body (18) for receiving a temperature sensor (12); a temperature sensor (12) having a metal retaining plate (16) fastened to the retaining body (18) and intended to be fastened to the electric machine in a defined mounting position relative to the electric machine, in which the temperature sensor (12) is oriented substantially in the radial direction of the electric machine; and having a spring element (20) which is supported on the holding body (18) and which serves to provide a spring prestress in the axial direction for pressing the temperature sensor (12) against the radially inner edge of the winding (14). A sensor fastening device (10), which can be displaced in a radial direction and can be moved axially past the winding (14), is such that the temperature sensor (12) can be positioned on a radially inner edge of the winding (14) from a radially ou