Internal gear pumps for a hydraulic vehicle braking system

摘要

An internal gear pump for a slip-controlled hydraulic vehicle braking system includes a pinion, a ring gear, and a filler piece (sickle). The filler piece has an inner part extending in a curved manner in the peripheral direction and an outer part extending in a curved manner in the peripheral direction. The inner part and the outer part are interconnected in a hinged manner on the suction-sided ends. A leg spring is arranged between the inner and outer parts and is configured to separate the inner and outer parts and press against the tops of the teeth of the pinion and the tops of the teeth of the ring gear of the internal gear pump.

主权项

1. An internal gear pump for a hydraulic vehicle braking system, comprising:
an internally toothed ring gear; an externally toothed pinion arranged eccentrically in the ring gear and configured to mesh with the ring gear in a circumferential section, the pinion and the ring gear forming a crescent-shaped cavity opposite the circumferential section in which the pinion meshes with the ring gear; and a filler piece arranged in the cavity, the filler piece having an inner side on which heads of teeth of the pinion bear against and an outer side on which heads of teeth of the ring gear bear against, wherein the filler piece comprises a leg spring having legs disposed in the circumferential direction, the legs being configured to urge the filler piece inwards and outwards against the heads of the teeth of the pinion and the heads of the teeth of the ring gear, wherein the filler piece comprises an inner part having an inner side that bears against the heads of the teeth of the pinion, and an outer part having an outer side that bears against heads of the teeth of the ring gear, wherein the leg spring is arranged between the inner part and the outer part of the filler piece and is configured to press the inner part and the outer part apart, and wherein the filler piece has a sealing element which is arranged between the inner part and the outer part and which is configured to one or more of bear sealingly against the inner part and/or the outer part and seal axially.