Radial piston pump with flat seal between flange and housing

Abstract

A radial piston pump, having a flange and a housing, a pump element in the housing, and an eccentric drive shaft that actuates a piston in the pump element radial to the drive shaft, which piston seals a pump volume which upon expansion, delivers fuel from an inlet chamber into the pump volume and upon contraction, exerts pressure on the fuel in the pump volume and conveys it out at a high pressure, having an inner chamber that contains the eccentricity, and having a parting plane that extends between the housing part and flange part and intersects the inner chamber and the inlet chamber. A one-piece flat seal is disposed in the parting plane and seals the inlet chamber, the inner chamber, and the environment of the radial piston pump in relation to one another.

1 - 10 . (canceled)  
   
   
       11 . A radial piston pump ( 10 ) comprising a flange part ( 14 ), a housing part ( 12 ), an inner chamber ( 60 ), and an inlet chamber ( 34 ), 
 at least one pump volume ( 30 ) disposed in the housing part ( 12 ) and sealed by a moving piston ( 28 ),    an eccentric drive shaft ( 18 ) that extends in the axial direction through the inner chamber ( 60 ) and actuates the piston ( 28 ) in the radial direction so that the piston ( 28 ) delivers fuel from the inlet chamber ( 34 ) into the pump volume ( 30 ), exerts pressure on the fuel in the pump volume ( 30 ), and conveys it out of the pump volume ( 30 ) at a high pressure,    a parting plane ( 16 ) that extends between the housing part ( 12 ) and flange part ( 14 ) and intersects the inlet chamber ( 34 ), and    a one-piece flat seal ( 70 ) disposed in the parting plane ( 16 ) and sealing the inlet chamber ( 34 ) in relation to the environment of the radial piston pump ( 10 ).    
   
   
       12 . The radial piston pump ( 10 ) according to  claim 11 , wherein the parting plane ( 16 ) intersects the inlet chamber ( 34 ) and inner chamber ( 60 ), with the one-piece flat seal ( 70 ) sealing the inner chamber ( 60 ) in relation to the inlet chamber ( 34 ) and sealing the inlet chamber ( 34 ) in relation to the environment.  
   
   
       13 . The radial piston pump ( 10 ) according to  claim 11 , wherein the flat seal ( 70 ) has a sheet metal layer ( 94 ).  
   
   
       14 . The radial piston pump ( 10 ) according to  claim 12 , wherein the flat seal ( 70 ) has a sheet metal layer ( 94 ).  
   
   
       15 . The radial piston pump ( 10 ) according to  claim 13 , wherein the sheet metal layer ( 94 ) has a coating ( 96 ).  
   
   
       16 . The radial piston pump ( 10 ) according to  claim 14 , wherein the sheet metal layer ( 94 ) has a coating ( 96 ).  
   
   
       17 . The radial piston pump ( 10 ) according to  claim 15 , wherein the coating ( 96 ) contains elastic plastic material.  
   
   
       18 . The radial piston pump ( 10 ) according to  claim 16 , wherein the coating ( 96 ) contains elastic plastic material.  
   
   
       19 . The radial piston pump ( 10 ) according to  claim 11 , wherein the flat seal ( 70 ) has a bead ( 82 ) that extends between the inner chamber ( 60 ) and the inlet chamber ( 34 ) in the installed position.  
   
   
       20 . The radial piston pump ( 10 ) according to  claim 11 , wherein the flat seal ( 70 ) has a bead ( 84 ) that extends between the inlet chamber ( 34 ) and the environment in the installed position.  
   
   
       21 . The radial piston pump ( 10 ) according to  claim 19 , wherein the flat seal ( 70 ) has a bead ( 84 ) that extends between the inlet chamber ( 34 ) and the environment in the installed position.  
   
   
       22 . The radial piston pump ( 10 ) according to  claim 13 , wherein the sheet metal layer ( 94 ) is 0.1 to 0.3 mm thick.  
   
   
       23 . The radial piston pump ( 10 ) according to  claim 15 , wherein the sheet metal layer ( 94 ) is 0.1 to 0.3 mm thick.  
   
   
       24 . The radial piston pump ( 10 ) according to  claim 17 , wherein the sheet metal layer ( 94 ) is 0.1 to 0.3 mm thick.  
   
   
       25 . The radial piston pump ( 10 ) according to  claim 19 , wherein the sheet metal layer ( 94 ) is 0.1 to 0.3 mm thick.  
   
   
       26 . The radial piston pump ( 10 ) according to  claim 19 , wherein the bead is 0.2 to 0.4 mm high.  
   
   
       27 . The radial piston pump ( 10 ) according to  claim 20 , wherein the bead is 0.2 to 0.4 mm high.  
   
   
       28 . The radial piston pump ( 10 ) according to  claim 11 , wherein the inlet chamber ( 34 ) is supplied with fuel at least in part by means of grooves ( 74 ) that are disposed in the housing ( 12 ) or flange ( 14 ) and are open toward the parting plane ( 16 ).  
   
   
       29 . The radial piston pump ( 10 ) according to  claim 12 , wherein the inlet chamber ( 34 ) is supplied with fuel at least in part by means of grooves ( 74 ) that are disposed in the housing ( 12 ) or flange ( 14 ) and are open toward the parting plane ( 16 ).  
   
   
       30 . The radial piston pump ( 10 ) according to  claim 13 , wherein the inlet chamber ( 34 ) is supplied with fuel at least in part by means of grooves ( 74 ) that are disposed in the housing ( 12 ) or flange ( 14 ) and are open toward the parting plane ( 16 ).