Electromagnetic clutch comprising a selector sleeve

An electromagnetic clutch, comprising:

• a selector sleeve which is arranged in a rotationally fixed manner on a first shaft and is adapted to be shifted linearly along the first shaft between an engaged state and a disengaged state;
• a coupling body which is aligned coaxially to the first shaft;
• wherein, in the engaged state, a fit in a form-fitting manner is provided between the selector sleeve and the coupling body so that a rotary connection is between the first shaft and the coupling body;
• and
• a stator having a coil which serves to shift an armature ring linearly along the first shaft, the armature ring being mounted radially in an axial guide separately from the first shaft and the coupling body,
• wherein a shifting of the armature ring by the coil is also accompanied by a shifting of the selector sleeve, and
• wherein the selector sleeve also forms the armature ring.

An electromagnetic clutch, comprising:

• a selector sleeve which is arranged in a rotationally fixed manner on a first shaft and is adapted to be shifted linearly along the first shaft between an engaged state and a disengaged state;
• a coupling body which is aligned coaxially to the first shaft;
• wherein, in the engaged state, a fit in a form-fitting manner is provided between the selector sleeve and the coupling body so that a rotary connection is between the first shaft and the coupling body;
• and
• a stator which has a coil which serves to shift an armature ring linearly along the first shaft, the armature ring being mounted radially in an axial guide separately from the first shaft and the coupling body,
• wherein a shifting of the armature ring by the coil is also accompanied by a shifting of the selector sleeve,
• wherein the coil, when energized, exerts a magnetic force on the armature ring which acts via the armature ring on the selector sleeve towards the disengaged state or towards the engaged state, and
• wherein an elastic spring unit is provided which exerts a restoring force on the selector sleeve which acts in a direction opposite to the magnetic force, the elastic spring unit including at least two wave springs each having lugs which engage into a recess such that the at least two wave springs cannot rotate relative to each other.