Automotive auxiliary assembly vacuum pump having a single-piece flange element

An automotive auxiliary assembly vacuum pump which is configured as a dry-running vane cell pump and which is driven by an electric motor, the automotive auxiliary assembly vacuum pump comprising:

• a housing composite structure comprising an electric motor section, and a pump section;
• a motor housing part;
• a single-piece flange element comprising,
• a bearing shield which comprises a disk body, the bearing shield being configured to support a bearing and to close the motor housing part proximally, and
• an axially proximal thrust washer;
• and
• a pump rotor comprising a rotor body which comprises at least three rotor blades which are displaceably mounted on the rotor body;
• wherein,
• the electric motor section comprises a motor rotor which is surrounded in a radial distal manner and in an axially distal manner by the motor housing part and which is closed proximally by the bearing shield of the single-piece flange element,
• the pump section comprises a pump housing which is configured to define a pump chamber and which comprises a closure element, at least one pump chamber inlet opening, and at least one pump chamber outlet opening, the pump housing being formed at least by the axially proximal thrust washer of the single-piece flange element, an axially distal thrust washer, and a radial thrust ring,
• the pump rotor is arranged in the pump chamber,
• the motor rotor is oriented coaxially with the pump rotor, and
• a pump inlet opening is provided in the disk body of the bearing shield of the single-piece flange element and the pump chamber inlet opening corresponding thereto is provided in the axially proximal thrust washer.