Patent ID: 8816563
Filing Date: 2014-08-26
Classification: H02K

Abstract:
1. A six-pole direct-current machine comprising: a stator ( 16 ), a rotor ( 20 ) which is mounted in a pole housing ( 12 ) such that the rotor can rotate and has a wave winding ( 23 ) and a commutator ( 24 ) and ten individual teeth, and a brush holder ( 28 ) for holding brushes ( 26 ) of a brush arrangement, wherein the brush arrangement has less than six brushes ( 26 ), adjacent brushes being arranged with an angular separation of about 60° on a circumference of the commutator ( 24 ), wherein the commutator ( 24 ) has twenty laminates ( 25 ), and further wherein the brush arrangement has four brushes ( 26 ) disposed on the circumference of the commutator ( 24 ) such that each of the four brushes is relatively positioned in relation to a respective immediately adjacent commutator slot, wherein the relative position is different for three of the four brushes, and further wherein the current load in the brushes ( 26 ) is in each case halved in the region of a commutation process.