Rotary vane pump for use as component of brake booster in motor car, has wing comprising guide contour that is guided in guide track introduced on front wall, so that wing doses not contact with inner circumference web of inner space

摘要

The pump (1) has an inner space (2) limited by a front wall (3) i.e. cover, and a rotor (4) rotatably mounted in the inner space. The rotor includes a slot running transverse to a rotation axis. A Wing (7) is slidably mounted in the slot, and divides the inner space into two chambers (8, 9). The wing runs with longitudinal ends along an inner circumferential web (10) of the inner space. The wing comprises a guide contour (11) i.e. spherical cap, which is guided in a circular shape guide track introduced on the front wall, so that the wing doses not contact with the inner circumference web.