Self-closing container closure

Abstract

A self-closing container closure, in particular for a filler neck of a fuel tank, includes a closure flap which can be pivoted in the direction of the interior of the filler neck about an axis of rotation counter to a spring force. An arm is attached to the inner side of the closure flap in an articulated manner and the arm yields counter to a restoring force.

1 . A self-closing container closure, comprising: 
 a filler neck defining a filler neck inner space;    a closure flap having an inner side, said closure flap having a pivot axis and being configured to pivot toward the filler neck inner space counter to a spring force; and    an arm attached to said closure flap in an articulated manner on said inner side of said closure flap, said arm being is configured to yield in itself counter to a restoring force.    
   
   
       2 . The self-closing container closure according to  claim 1 , wherein said arm is a telescopic arm.  
   
   
       3 . The self-closing container closure according to  claim 1 , wherein said arm is a telescopic arm with at least two sections guided telescopically with respect to one another.  
   
   
       4 . The self-closing container closure according to  claim 1 , wherein: 
 said closure flap has a central region; and    said arm has an end region and is attached, with said end region, in an articulated manner to said central region of said closure flap.    
   
   
       5 . The self-closing container closure according to  claim 1 , including: 
 a compression spring; and    said arm having a given section and being attached, with said given section, in an articulated manner to said closure flap, said compression spring acting on said given section of said arm.    
   
   
       6 . The self-closing container closure according to  claim 1 , wherein: 
 said arm has a first section and is attached, with said first section, in an articulated manner to said closure flap, said first section of said arm has a stem;    said arm has a second section with a cylindrical cavity formed therein, said cylindrical cavity defines an axial direction; and    said first section of said arm is telescopically guided in the axial direction with said stem of said first section being guided in said cylindrical cavity of said second section of said arm when said closure flap pivots inward.    
   
   
       7 . The self-closing container closure according to  claim 1 , wherein said arm has at least three sections guided telescopically in one another.  
   
   
       8 . The self-closing container closure according to  claim 1 , including: 
 a wall region; and    said arm having an end portion facing away from said closure flap, said end portion of said arm being pivotably mounted on said wall region.    
   
   
       9 . The self-closing container closure according to  claim 1 , wherein: 
 said filler neck has a given width; and    said pivot axis of said closure flap extends transverse across only part of said given width of said filler neck.    
   
   
       10 . The self-closing container closure according to  claim 1 , wherein: 
 said filler neck has a given width; and    said pivot axis of said closure flap extends transverse across only an outer portion of said given width of said filler neck.    
   
   
       11 . The self-closing container closure according to  claim 1 , wherein said pivot axis of said closure flap includes two bearings disposed in a respective outer region of said filler neck inner space.  
   
   
       12 . The self-closing container closure according to  claim 11 , wherein said bearings include bearing bolts.  
   
   
       13 . The self-closing container closure according  claim 1 , including: 
 a compression spring;    said arm including at least two telescoping sections with respective stems having respective lengths; and    said compression spring surrounding said stems at least over part of said respective lengths.    
   
   
       14 . The self-closing container closure according  claim 13 , wherein said compression spring concentrically surrounds said stems of said telescoping sections.  
   
   
       15 . The self-closing container closure according to  claim 13 , wherein: 
 said arm has a section with an end portion facing said closure flap; and    an abutment for said compression spring is provided at said end portion.    
   
   
       16 . The self-closing container closure according to  claim 15 , wherein said abutment is one of a disk-shaped abutment and a plate-shaped abutment.  
   
   
       17 . The self-closing container closure according to  claim 1 , wherein said filler neck is a fuel tank filler neck.