Vane-cell pump provided with a deep-drawn metal-sheet pot

Abstract

A pump, for instance for conveying lubricating oil to an internal combustion engine, in particular to multi-stroke vane-cell pump in which a rotatable group comprises a rotor whose vanes are movable at least in a radial direction, a stroke profile, vane heads tightly sliding along said profile and two lateral axial lids in the form of lateral plates or casing walls, the stroke profile and the first axial lateral plate being embodied in the form of a metal sheet pot.

1 - 20 . (canceled)  
   
   
       21 . A pump comprising: 
 a rotor having vanes movable at least radially, the vanes having vane heads, the vanes and rotor defining a rotatable group;    a sheet metal pot, the sheet metal pot defining a stroke profile, the vane heads sliding tightly along the stroke profile, and the sheet metal pot also forming a first axial lateral plate for the rotatable group; and    an axial lateral lid for the rotatable group opposite the first axial lateral plate.    
   
   
       22 . The pump as recited in  claim 21  wherein the sheet metal pot a deep drawn metal pot.  
   
   
       23 . The pump as recited in  claim 21  wherein the axial lateral lid is a second axial lateral plate formed by a sheet metal.  
   
   
       24 . The pump as recited in  claim 23  wherein the axial lateral lid has an impressed shoulder with an outside profile in the shape of the stroke profile.  
   
   
       25 . The pump as recited in  claim 23  wherein the axial lateral lid is a precision blanked or fine-edge blanked lateral lid.  
   
   
       26 . The pump as recited in  claim 21  wherein the sheet metal pot includes radial intake openings.  
   
   
       27 . The pump as recited in  claim 21  wherein the sheet metal pot includes outlet openings, the outlet openings including axial openings.  
   
   
       28 . The pump as recited in  claim 21  wherein the outlet openings include at least one radial opening in the sheet metal pot.  
   
   
       29 . The pump as recited in  claim 28  further comprising a temperature switching valve or pressure switching valve, the radial outlet opening being sealable by the temperature switching valve or the pressure switching valve so as to establish a switchable conveyor area.  
   
   
       30 . The pump as recited in  claim 29  wherein the temperature switching valve has an excess stroke spring.  
   
   
       31 . The pump as recited in  claim 29  further comprising a plastic casing, the sheet metal pot and the temperature switching valve or the pressure switching valve being integrated into the plastic casing.  
   
   
       32 . The pump as recited in  claim 21  further comprising a plastic casing, the sheet metal pot being integrated into the plastic casing.  
   
   
       33 . The pump as recited in  claim 32  wherein the plastic casing is an injection molding.  
   
   
       34 . The pump as recited in  claim 29  further comprising a reed nonreturn valve, an axial outlet opening of the switchable conveyor area being closable by the reed nonreturn valve.  
   
   
       35 . The pump as recited in  claim 34  wherein the reed nonreturn valve has the shape of the stroke profile curvature.  
   
   
       36 . The pump as recited in  claim 34  wherein the reed nonreturn valve is mounted on a plastic journal.  
   
   
       37 . The pump as recited in  claim 34  further comprising a stroke end stop for the reed nonreturn valve, the stroke end stop being in a plastic casing.  
   
   
       38 . The pump as recited in  claim 21  wherein the sheet metal pot has a notched or impressed cold start ring.  
   
   
       39 . The pump as recited in  claim 38  wherein the rotor has grooves or depressions to receive the cold start ring.  
   
   
       40 . The pump as recited in  claim 38  wherein the axial lateral lid has a notched or impressed cold start ring.  
   
   
       41 . The pump as recited in  claim 21  wherein the axial lateral lid has impressed pressure pockets.  
   
   
       42 . The pump as recited in  claim 29  wherein the radial outlet opening of the switchable conveyor area opens into a channel, the channel opening directly via a path into an intake area of a second nonswitchable conveyor area.  
   
   
       43 . The pump as recited in  claim 21  wherein the pump includes an intake and an outlet for lubricating oil of an internal combustion engine.  
   
   
       44 . The pump as recited in  claim 21  wherein the pump is a multi-stroke vane-cell pump.