Piston for a piston-cylinder arrangement, in particular a shock absorber piston

Abstract

The invention relates to a piston for a piston-cylinder arrangement, especially a shock absorber piston, comprising a piston body ( 6 ) that is fitted with at least one peripheral web ( 10 ) on its peripheral surface, wherein a collar-shaped sealing element ( 9 ) made of thermoformable plastic material is also formed on the peripheral surface of the piston body ( 6 ) in such a way that the web ( 10 ) is only formed in part of the height of the material of the collar-shaped sealing element ( 9 ).

1 . A piston for a piston-cylinder arrangement, in particular a shock absorber piston, with a piston body ( 6 ) that is provided with at least one peripheral web ( 10 ) on its peripheral, and with a collar-shaped seal ( 9 ) made of a thermoplastic sealing material that is formed onto the peripheral surface of the piston body ( 6 ) in such a way that the web ( 10 ) presses into the material of the collar-shaped seal ( 9 ) over only a portion of its height.  
     
     
         2 . A piston according to  claim 1 , characterized in that at least two peripheral webs ( 10 ) are arranged on the peripheral surface that border a notch ( 11 ).  
     
     
         3 . A piston according to claims  1  or  2 , characterized in that each of the edges ( 9 . 1 ,  9 . 2 ) of the collar-shaped seal ( 9 ) extends beyond the end surface ( 4 . 1 ,  5 . 1 ) of the piston body ( 6 ) associated with it.  
     
     
         4 . A piston according to one of claims  1  through  3 , characterized in that at least one web ( 10 ) is located in an area adjacent to an end surface ( 4 . 1 ,  5 . 1 ) of the piston body ( 6 ).  
     
     
         5 . A piston according to one of claims  1  through  4 , characterized in that the piston body ( 6 ) is assembled from at least two element sections ( 6 . 1 ,  6 . 2 ) that each have a plane of separation running perpendicular to the piston axis.  
     
     
         6 . A piston according to one of claims  1  through  5 , characterized in that each element section ( 6 . 1 ,  6 . 2 ) of the piston body ( 6 ) has a peripheral web ( 10 ).  
     
     
         7 . A piston according to one of claims  1  through  5 , characterized in that the piston body ( 6 ) is manufactured using powder metallurgy.  
     
     
         8 . A piston according to one of claims  1  through  7 , characterized in that the collar-shaped seal ( 9 ) consists of PTFE as a thermoplastic synthetic.  
     
     
         9 . A piston according to one of claims  1  through  8 , characterized in that the collar-shaped seal ( 9 ) is pressed on, calibrating its exterior surface ( 12 ) at least in its area overlapping the webs ( 10 ).