Camshaft adjuster

Abstract

A camshaft adjuster ( 1 ) is provided with a restoring spring ( 4 ) having a spring end ( 6 ) for support on the driven element ( 3 ) that has a wavelike shape.

1 . A camshaft adjuster comprising a drive element, a driven element, and also a restoring spring which are arranged coaxial to a rotational axis of the camshaft adjuster, the restoring spring generates a relative rotation of the drive element relative to the driven element, and a spring end of the restoring spring that is provided for support on the driven element has a wavelike shape. 
     
     
         2 . The camshaft adjuster according to  claim 1 , wherein a support point for the spring end on the driven element has a shape that is complementary to the wavelike shape of the spring end. 
     
     
         3 . The camshaft adjuster according to  claim 2 , wherein the support point is formed as part of a hub of a spring cover that is locked in rotation with the driven element. 
     
     
         4 . The camshaft adjuster according to  claim 3 , wherein the spring cover is formed from sheet metal. 
     
     
         5 . The camshaft adjuster according to  claim 3 , wherein the support point is formed integrally with the spring cover and shaped away from the rotational axis in the radial direction. 
     
     
         6 . The camshaft adjuster according to  claim 3 , wherein the spring cover has a retaining tab that fixes the spring end in a radial direction. 
     
     
         7 . The camshaft adjuster according to  claim 6 , wherein the retaining tab is formed integrally from the spring cover. 
     
     
         8 . The camshaft adjuster according to  claim 6 , wherein the support point or the retaining tab of the spring cover is provided for angular positioning of the spring cover relative to the driven element. 
     
     
         9 . The camshaft adjuster according to  claim 1 , wherein a spring cover is locked in rotation with the driven element, the driven element is connectable with a camshaft, and the spring cover is simultaneously formed as a trigger wheel. 
     
     
         10 . A restoring spring of a camshaft adjuster according to  claim 1 .