METHOD OF DETERMINING THE MOVEMENT OF A SHAFT

摘要

The invention relates to a device (10) which is used to determine the movement of a shaft, comprising a crankshaft (12) which is rotated around an axis (13) and which can move along the length of said axis (13), a multi-pole magnet (14) and a sensor (16), said sensor (16) or magnet (14) being rotated by the crankshaft (12). The magnet presents the sensor (16) with north and south poles (15) which alternate according to the relative angular position along the axis (13) of the sensor (16) and the magnet (14), the poles (15) being made from a magnetisable material. The movement of the shaft along the axis thereof can be detected according to the detected alternating poles. The invention also relates to a geared motor, a window regulator and a magnet.