Position sensor for determining the rotational motion of a shaft.

It is a position sensor for detecting the rotational movement of a shaft, in particular the lifting shaft (12) of a lifting device is described in which the rotary motion is taken directly to the shaft (12). The position sensor to operate reliably in harsh environment and be cost-effectively. It also seeks to generate an electrical position signal of the shaft (12). For this purpose, it is proposed that the shaft (12) concentrically arranged to it, designed as a toothed segment first toothing (14), provided with a on a sensor shaft (32) in a sensor housing (28) mounted second toothing (34) is engaged and in that the second toothing (34), a potentiometer (36) drives. The potentiometer (36) is spring-biased in one rotational direction. At the second gear (34) has a spring tongue (42) is formed, which in the basic position of the shaft (12) to the sensor casing (28) is supported, thereby setting a clearly defined attachment position.