Vane pump

Abstract

The invention relates to a vane pump comprising a pump housing that has a sleeve-shaped housing body, a bottom, and a cover, with the bottom and cover axially closing the housing body. The vane pump also has a rotor, which lies eccentrically in the housing body and which is rotatably mounted in the bottom and the cover, and one or more vanes which are movably mounted in the rotor in an axial direction. Each vane has bearing pins on the axial end faces thereof, with the bearing pins engaging in the bottom and the cover.

1 - 14 . (canceled) 
     
     
         15 . A vane pump, comprising:
 a pump housing having a sleeve-shaped housing body, a bottom, and a cover, with the bottom and the cover axially closing the housing body;   a rotor arranged eccentrically in the housing body and rotatably mounted in the bottom and cover;   at least one vane mounted in the rotor for movement in a radial direction, said vane having axial end faces; and   bearing pins provided on the axial end faces of the vane and engaging in the bottom and the cover.   
     
     
         16 . The vane pump of  claim 15 , wherein each said bearing pin is formed by a bolt formed in the vane. 
     
     
         17 . The vane pump of  claim 16 , wherein the bolt has a free end which extends axially beyond the vane, and further comprising a bearing supported by the free end of the bolt. 
     
     
         18 . The vane pump of  claim 17 , wherein the bearing is a deep groove ball bearing. 
     
     
         19 . The vane pump of  claim 15 , wherein each of the bottom and the cover has a guideway for receiving the bearing pins. 
     
     
         20 . The vane pump of  claim 19 , wherein the guideway is configured as a groove. 
     
     
         21 . The vane pump of  claim 19 , wherein the guideway is configured as a circular track. 
     
     
         22 . The vane pump of  claim 19 , wherein the guideway lies in coaxial relationship to an inner circumferential surface of the housing body. 
     
     
         23 . The vane pump of  claim 15 , wherein the vane has a radially outer vane tip which defines a gap with an inner circumferential surface of the housing body. 
     
     
         24 . The vane pump of  claim 23 , wherein the gap has a size of 5 μm to 100 μm. 
     
     
         25 . The vane pump of  claim 23 , wherein the gap has a size of 10 λm to 50 μm. 
     
     
         26 . The vane pump of  claim 15 , wherein the vane has a radially outer vane tip which is formed with a groove extending in a length direction of the vane. 
     
     
         27 . The vane pump of  claim 26 , further comprising a sealing bar arranged in the groove and sized to extend beyond the vane tip. 
     
     
         28 . The vane pump of  claim 27 , wherein the sealing bar is floatingly supported in the groove. 
     
     
         29 . The vane pump of  claim 27 , wherein the sealing bar is made of metal or plastic. 
     
     
         30 . The vane pump of  claim 27 , wherein the sealing bar is made of light metal. 
     
     
         31 . The vane pump of  claim 15 , constructed in the form of a dry running pump.