Abstract: In a permanent-magnet-excited commutator motor, especially a small motor for motor vehicles, the short-circuit ring (13) of the stator (12) has soft iron auxiliary poles (16), to attain an inverse speed characteristic. The permanent magnets (15) rest with their arc-shaped outer face on the short-circuit ring (13) and are laterally supported on one side by a side flank of the auxiliary poles (16) and on the other side by a supporting element retained on the short-circuit ring (13). To enable securing the permanent magnets in a manner suitable for large-scale mass production, the supporting elements are embodied as protrusions (19) bulging radially in the inward direction and integral with the short-circuit ring (13). Assembly is accomplished by simple insertion of the permanent magnets (15) between the auxiliary poles (16) and the associated protrusions (19).

Abstract: A permanent-magnet excited commutator motor, particularly a multipole small motor, has a stator yoke, an armature, two permanent magnet elements having a relatively low permeability, the permanent magnet elements having end tips with a gap formed between, the permanent magnet elements having one tip located forwardly as considered in the rotary direction of the armature, and a ferromagnetic auxiliary pole arranged on the stator yoke and having a relatively high permeability, the auxiliary pole being a U-shaped bracket having legs abutting against the end faces of the low permeability magnet elements, the bracket which forms the auxiliary pole being elastic and asymmetrical and formed as a holding spring, and legs of the bracket including a thicker leg and a thinner leg, where the thicker leg is formed as a stray web abutting against the permanent magnet tip lying forwardly in the rotary direction of the armature.