Rotary vane pump for brake booster of motor car, has rotor rotatably mounted in inner space, and rolling bodies provided at longitudinal ends of vane, where vane is unrolled on inner circumference trajectory over rolling bodies

摘要

The pump (1) has a rotor (3) rotatably mounted in an inner space (2). The rotor has a slot (4) running transverse to a rotational axis and a vane (5) displaceably mounted in the slot. The vane divides the inner space into two chambers and runs with longitudinal ends (6, 6') along an inner circumference trajectory (7) of the inner space. Rolling bodies (8) i.e. rollers, are provided at the longitudinal ends of the vane. The vane is unrolled on the trajectory over the rolling bodies. The rolling bodies are made of metal or plastic. The rotor and the wing are made of plastic.