Electromagnetically switchable positive locking coupling

Abstract

An electromagnetically switchable positive locking coupling (10) is shown, comprising a switching sleeve (16) which is arranged non-rotatably on a shaft (12) and is linearly displaceable along the shaft between an engagement position and an disengagement position, a coupling body (20) which is aligned coaxially to the shaft (12), and a stator (26) with at least one currentable drive coil (30) for adjusting the switching sleeve (16) along the shaft (12), wherein in the engagement position there is a positive locking connection between the switching sleeve (16) and the coupling body and thus a rotary connection between the shaft (12) and the coupling body.Furthermore, the positive-lock coupling (10) comprises a stationary sensor device (42) arranged adjacent to the switching sleeve (16), which includes at least one Hall sensor and at least two magnets magnetically enclosing the at least one Hall sensor. The magnets are permanently fixed in position relative to the at least one Hall sensor, the magnets pointing towards the switching sleeve (16) and having opposite polarities to each other. The sensor device (42) is radially adjacent to the switching sleeve (16) with a radial gap, such that an axial movement of the switching sleeve (16) is detected by the Hall sensor via a reduction in the radial gap.

Images