Internal gear pump

Abstract

An internal gear pump for a hydraulic vehicle brake system includes a bearing formed for a pump shaft in a tubular form. The bearing is integrally formed with a housing of the internal gear pump. The bearing is configured to mount a pinion of the internal gear pump rotatably on the bearing. The internal gear pump also includes a catch configured to connect the pinion to the pump shaft for conjoint rotation.

What is claimed is: 
     
         1 . An internal gear pump, comprising:
 an annulus;   a pinion arranged eccentrically in the annulus and configured to mesh with the annulus;   a pump shaft configured to drive the pinion and the annulus in rotation; and   a bearing configured to rotatably mount at least one of the pump shaft and the pinion,   wherein the bearing is arranged within the pinion.   
     
     
         2 . The internal gear pump according to  claim 1 , wherein the bearing is integral with a housing of the internal gear pump. 
     
     
         3 . The internal gear pump according to  claim 1 , further comprising a catch configured to connect the pinion and the pump shaft for conjoint rotation. 
     
     
         4 . The internal gear pump according to  claim 2 , wherein the housing of the internal gear pump is cast iron. 
     
     
         5 . The internal gear pump according to  claim 1 , wherein the pinion is not arranged directly on the pump shaft.