Patent ID: 8174157

Claim:
A commutated DC motor for a liquid pump having a pump housing with a suction connector and a pressure connector for connection to a hydraulic circuit, the DC motor comprising: a motor shaft; an essentially disk-shaped pump rotor mounted to the motor shaft to rotate in the pump housing, the rotor having of an impeller with several pump vanes and a permanent magnet; a plurality of axially aligned wound stator poles; an axial air gap between the pump rotor and the axially aligned wound stator poles; a partition separating a pump space from a dry space, the partition being arranged in the axial gap; a plurality of insulation elements having moldings, the insulation elements being provided on the poles; a plurality of stator windings each having first and second winding ends, the stator windings being wound on the poles, the first and second winding ends are mechanically fastened to the moldings; a first circuit board mechanically and electrically connected to the first winding ends and arranged in a first plane parallel to the partition, the first circuit board having conductor tracks for interconnection of the first winding ends of the stator windings; a second circuit board mechanically and electrically connected to one part of the second winding ends and provided with a control circuit arranged in a second plane parallel to the partition; and a contact support arranged between the insulation elements and the first circuit board, the contact support having contact receptacles for mechanical fastening of connection contacts.