Camshaft adjuster

Abstract

A camshaft adjuster with a stator and a rotor having several radially protruding vanes, which run against stops in order to limit the hydraulically controlled adjustment motion is provided. The stops ( 9, 9′, 9 a - 9 o ) are provided on a lateral cover plate ( 10 ) or a side wall or a disc-shaped or circular stop element ( 12 ) provided inside the cover plate or the side wall.

1 . A camshaft adjuster comprising a stator and a rotor with several radially protruding vanes, which move against stops for limiting a hydraulically controlled adjustment motion, the stops ( 9 ,  9 ′,  9   a - 9   o ) are provided at a lateral cover plate ( 10 ), a side wall, or a disk-shaped or ring-shaped stop element ( 12 ) arranged inside the cover plate or the side wall.  
     
     
         2 . A camshaft adjuster according to  claim 1 , wherein the stops ( 9 ,  9 ′,  9   a - 9   h ) are made by way of deformation of the metal cover plate ( 10 ), the metal side wall or the metal stop element ( 12 ).  
     
     
         3 . A camshaft adjuster according to  claim 2 , wherein the stops ( 9   a - 9   g ) comprise closed or open impressions.  
     
     
         4 . A camshaft adjuster according to  claim 3 , wherein the stops comprise the open impressions that form openings which are provided with an internal thread ( 15 ).  
     
     
         5 . A camshaft adjuster according to  claim 3 , wherein the stops are closed impressions ( 9   b ) that are upset in a free end area thereof in order to widen the free end area.  
     
     
         6 . A camshaft adjuster according to claims  3 , wherein the stops comprise closed impressions ( 9   c ) that are set back in a direction opposite to a direction of the impression.  
     
     
         7 . A camshaft adjuster according to  claim 2 , wherein the stops ( 9   h ) comprise flap-like bends.  
     
     
         8 . A camshaft adjuster according to  claim 1 , wherein the stops ( 9   i - 9   o ) are formed by stop pieces mounted to the cover plate ( 10 ) or the side wall, or the stop element ( 12 ).  
     
     
         9 . A camshaft adjuster according to  claim 8 , wherein the stops ( 9   i ,  9   j ) comprise pressed-in rivets or pins.  
     
     
         10 . A camshaft adjuster according to  claim 8 , wherein the stops ( 9   k ,  9   l ) comprise pins or bent pieces welded, soldered, or glued to the cover plate or the stop element.  
     
     
         11 . A camshaft adjuster according to  claim 8 , wherein the stops ( 9   m - 9   o ) are formed by screws screwed into the cover plate or the stop element.  
     
     
         12 . A camshaft adjuster according to  claim 11 , wherein the screws are screwed into openings ( 16 ) provided with internal threads ( 19 ) in the cover plate or the stop element or in internal threaded parts ( 20 ,  21 ) mounted to the cover plate or the stop element.  
     
     
         13 . A camshaft adjuster according to  claim 4 , wherein the open impressions are upset in a free end area thereof in order to widen the free end area.  
     
     
         14 . A camshaft adjuster according to claims  4 , wherein the open impressions are set back in a direction opposite to a direction of the impression.