Connecting rod and method for manufacturing the same

Abstract

A connecting rod ( 1 ) has a small connecting rod eye ( 2 ) and a large connecting rod eye ( 3 ). A bearing shell ( 4, 5 ) is disposed in at least one connecting rod eye ( 2, 3 ), wherein the bearing shell ( 4, 5 ) is held in the connecting rod eye ( 2, 3 ) for secure mutual rotation therewith. To obtain good adhesion of the bearing shell ( 4, 5 ) in the connecting rod eye ( 2, 3 ), the bore surface ( 12, 13 ) in one connecting rod eye ( 2, 3 ) and/or the outer surface of a bearing shell ( 4, 5 ) has/have a structure ( 6, 7, 24, 26, 28, 30, 32, 34, 37, 38 ), wherein the structure ( 6, 7, 24, 26, 28, 30, 32, 34, 37, 38 ) is formed by elevations ( 9 ), the elevations ( 9 ) delimiting the outer periphery of depressions ( 8 ). In a method for producing a connecting rod ( 1 ) comprising at least one connecting rod eye ( 2, 3 ) with a structured surface ( 12, 13 ), wherein a bearing shell ( 4, 5 ) is disposed in the connecting rod eye ( 2, 3 ) after structuring of the surface, the surface ( 12, 13 ) is structured with a laser.

1 . A connecting rod comprising: 
 a first end having a small connecting rod eye;    a second end cooperating with and spaced apart from said first end, said second end having a large connecting rod eye; and    at least one bearing shell disposed in said small and/or said large connecting rod eye for secure mutual rotation therewith, wherein at least one of an inner surface of said small and/or said large connecting rod eye and an outer surface of said at least one bearing shell has a structure, said structure having elevations adjacent to and delimiting depressions.    
   
   
       2 . The connecting rod of  claim 1 , wherein said depressions are formed as furrows.  
   
   
       3 . The connecting rod of  claim 2 , wherein said furrows are disposed in straight lines.  
   
   
       4 . The connecting rod of  claim 2 , wherein said furrows are disposed to cross.  
   
   
       5 . The connecting rod of  claim 2 , wherein said furrows are wavy.  
   
   
       6 . The connecting rod of  claim 1 , wherein said depressions are formed as closed pockets.  
   
   
       7 . The connecting rod of  claim 6 , wherein, as viewed from above, said pockets have an elongated or round shape.  
   
   
       8 . The connecting rod of  claim 1 , wherein an inner surface of said bearing shell and/or an outer surface of a component disposed in said bearing shell has a structure which is only formed from depressions.  
   
   
       9 . A method for producing a connecting rod, the connecting rod having a first end defining a small connecting rod eye, a second end cooperating with and spaced apart from said first end, said second end defining a large connecting rod eye, and at least one bearing shell disposed in said small and/or said large connecting rod eye for secure mutual rotation therewith, the method comprising the step of: 
 structuring at least one of an inner surface of said small and/or said large connecting rod eye and an outer surface of said at least one bearing shell, said structuring having elevations adjacent to and delimiting depressions.    
   
   
       10 . The method of  claim 9 , wherein said inner surface is structured by a laser.