Automotive rotary vane pump has an inner contact surface extended in radial direction

摘要

A vane pump has a rotor with sliding vanes (18) in the vicinity of a component (3') a control aperture (23, 24) and/or a suction groove (28). The component (3') has an inner contact surface (27) providing lateral guidance to the vanes (18). The inner contact surface (27) is extended in a radial direction in an area (30, 33) in which a vane (18) slides over a component (3') edge (29, 32).