Pump having a pump cylinder

Abstract

A pump, in particular for a vehicle brake system, includes a pump piston which is guided displaceably in a pump cylinder. The pump cylinder is produced by deep drawing.

1 . A pump, comprising:
 a pump cylinder; and   a pump piston guided displaceably in the pump cylinder,   wherein the pump cylinder is produced by deep drawing.   
     
     
         2 . The pump as claimed in  claim 1 , wherein the pump cylinder is received in a pump housing in such a way that it is supported in a planar manner against the pump housing via its outer lateral surface. 
     
     
         3 . The pump as claimed in  claim 1 , wherein the pump cylinder is beaker-shaped and has an annular wall and a base area. 
     
     
         4 . The pump as claimed in  claim 3 , wherein the base area defines a valve opening configured to be selectively closed by a valve body. 
     
     
         5 . The pump as claimed in  claim 3 , wherein the annular wall defines at least one inlet opening to the pump piston. 
     
     
         6 . The pump as claimed in  claim 3 , wherein the annular wall defines a multiplicity of inlet openings that form a filter screen on the annular wall. 
     
     
         7 . The pump as claimed in  claim 4 , wherein the valve opening is produced by punching. 
     
     
         8 . The pump as claimed in  claim 3 , wherein an annular disk is formed at the end of the annular wall arranged opposite the base area. 
     
     
         9 . The pump as claimed in  claim 3 , wherein an annular step is formed at the end of the annular wall arranged opposite the base area. 
     
     
         10 . A vehicle brake system, comprising:
 a pump including:
 a pump cylinder; and 
 a pump piston guided displaceably in the pump cylinder, 
 wherein the pump cylinder is produced by deep drawing. 
   
     
     
         11 . A method for producing a pump, comprising:
 forming at least one opening in a sheet metal;   deep drawing the sheet metal to form a pump cylinder, the sheet metal deep drawn in such a way that one or more of a valve opening, an inlet opening, and an outlet opening of the pump cylinder are formed by the opening; and   assembling a pump piston in the pump cylinder.   
     
     
         12 . The pump as claimed in  claim 1 , wherein the pump is for a vehicle brake system. 
     
     
         13 . The pump as claimed in  claim 7 , wherein the valve opening is produced by punching before the pump cylinder has been produced by deep drawing. 
     
     
         14 . The pump as claimed in  claim 5 , wherein the at least one inlet opening is produced by punching. 
     
     
         15 . The pump as claimed in  claim 14 , wherein the at least one inlet opening is produced by punching before the pump cylinder has been produced by deep drawing. 
     
     
         16 . The pump as claimed in  claim 6 , wherein the multiplicity of inlet openings are produced by punching. 
     
     
         17 . The pump as claimed in  claim 16 , wherein the multiplicity of inlet openings are produced by punching before the pump cylinder has been produced by deep drawing. 
     
     
         18 . The pump as claimed in  claim 9 , further comprising a ring seal arranged between the pump piston and the annular step of the pump cylinder.