Loss safety device for a tank cap

Abstract

The present invention relates to a loss safety device for a tank cap of a vehicle, especially for a fuel tank, with a first end section attached over a first connecting element at the tank cap, with a second end section attached on a vehicle over a second connecting element, and a band section provided between the first and second end sections. The second connecting element is formed by a pin and at least an anchoring extension. The first connecting element is connected with the tank cap rotatably around an axis of rotation R of the tank cap, being formed of an annular eyelet and of an anchor, connected with said band section and annular eyelet, and said annular eyelet features a recess in its inner section, as well as an insertion groove, connecting said recess with the outer side of said annular eyelet, and said anchor may be inserted into said insertion groove.

1 . A loss safety device for a tank cap of a vehicle comprising: 
 a first end section attached over a first connecting element on the tank cap;    a second end section attached to the vehicle over a second connecting element on the tank cap;    and a band section, provided between the first and the second end section, the second connecting element being formed by a pin and by an anchoring extension;    wherein said pin features on its outside at least one admission groove, and the anchoring extension surpasses said pin in a direction perpendicular towards the pin central axis, being flexibly connected with the pin and may be forced into admission groove.    
   
   
       2 . A loss safety device according to  claim 1 , wherein said admission groove extends in the radial direction of the pin.  
   
   
       3 . A loss safety device according to  claim 1 , wherein the pin and anchoring extension are made in one piece.  
   
   
       4 . A loss safety device according to  claim 1 , wherein the second connecting element and band section are built in one piece.  
   
   
       5 . A loss safety device according to  claim 1 , wherein said pin and anchoring extension are of the same material.  
   
   
       6 . A loss safety device according to  claim 5 , wherein said pin and anchoring extension are made of at least one of polyoxymethylene (POM) and another plastic material.  
   
   
       7 . A loss safety device according to  claim 1 , wherein said second connecting element and band section are produced of the same material.  
   
   
       8 . A loss safety device according to  claim 7 , wherein said material is at least one of polyoxymethylene (POM) and another plastic material.  
   
   
       9 . A loss safety device, according to one of claims  6  or  8 , characterized in that the plastic material features a Shore hardness between 40 and 80.  
   
   
       10 . A loss safety device according to  claim 1 , wherein several anchoring extensions are provided, and for each anchoring extension, an admission groove in the pin is provided.  
   
   
       11 . A loss safety device according to  claim 1 , wherein several anchoring extensions are provided, and said anchoring extensions and admission grooves are uniformly disposed over the circumference of said pin.  
   
   
       12 . A loss safety device according to  claim 1 , characterized in that several anchoring extensions are provided, and said anchoring extensions and admission grooves are disposed concentrically to the pin central axis.  
   
   
       13 . A loss safety device according to  claim 1 , characterized in that said second connecting element has a direction of introduction, and after introducing the second connecting element, and due to a power acting upon the second connecting element, contrary to its direction of introduction, an expansion takes place of the anchoring extension, by increasing the active cross-sectional area of the second connecting element, and consequently by composing a closing shape, it reacts to a movement of the second connecting element contrary to the direction of insertion.  
   
   
       14 . A loss safety device according to  claim 1 , characterized in that said pin features an enlargement in its upper section, which restricts the mobility of the second connecting element in the direction of introduction (E).  
   
   
       15 . A loss safety device for a tank cap, screwed into a connection of a vehicle fuel tank, with a first end section, attached to said tank cap over a first connecting element, a second end section, which over a second connecting element is attached to said vehicle, and a band section, foreseen between the first and second end section, the first connecting element being connected with said tank cap rotatably around the axis of rotation R of said tank cap), being composed of an annular eyelet and an anchor, united with said band section and annular eyelet, and said annular eyelet features in its internal area a recess, as well as an insertion groove, connecting the recess to the outer section of annular eyelet, and anchor may be introduced into said admission groove, characterized in that the anchor is configured in such a fashion that it may be introduced into said annular eyelet relatively to the band section longitudinal axis, precisely in an angular position or in an arbitrary angular position.  
   
   
       16 . A loss safety device according to  claim 15 , characterized in that said anchor and band section are made in one piece, being composed of the identical material, especially of polyoxymethylene (POM) and of another plastic.  
   
   
       17 . A loss safety device according to one of claims  15 , wherein said anchor and annular eyelet are produced of the same material, especially of polyoxymethylene (POM) or of another plastic material.  
   
   
       18 . A loss safety device, according to one of claims  16  or  17 , characterized in that the plastic material features a shore hardness between 40 and 80.  
   
   
       19 . A loss safety device according to one of claims  1 , combined with a loss safety device according to  claim 15.