Insertion tongue

Abstract

A plug-in tongue for a belt buckle of a seatbelt system. The tongue includes a plug-in section suitable for plugging into the belt buckle and with a belt-retaining section which has a slot for the passage and deflection of a seat belt. The plug-in tongue includes a metal plate which has a slot-shaped opening, and wherein at least one edge section of the metal plate, which edge section bounds the slot-shaped opening, is embedded into a plastics material. The edge section of the metal plate, which edge section bounds the slot-shaped opening, is bent out of the opening plane of the slot-shaped opening and has a hook-shaped cross section.

What is claimed is: 
     
         1 . An insertion tongue for a belt lock of a safety belt system, comprising:
 an insertion portion which is suitable for insertion in the belt lock and   a belt retention portion which has a slot for introducing and redirecting a safety belt,   wherein the insertion tongue comprises a metal plate which has a slot-like opening, and   wherein at least one edge portion of the metal plate, which portion delimits the slot-like opening, is embedded in a plastics material,   wherein   the edge portion of the metal plate, which portion delimits the slot-like opening, is bent out of the opening plane of the slot-like opening and has a hook-like cross-section.   
     
     
         2 . The insertion tongue as claimed in  claim 1 , wherein
 the outer side of the bent edge portion, which side faces the slot-like opening is partially curved in cross-section and   the curved outer side is provided with a plastics layer which is curved in cross-section.   
     
     
         3 . The insertion tongue as claimed in  claim 2 , wherein
 at the outer side on the curved plastics layer there are formed plastics teeth which extend away from the bent edge portion of the metal plate.   
     
     
         4 . The insertion tongue as claimed in  claim 3 , wherein
 the teeth have a fin-like cross-section which inhibits sliding of the safety belt in one direction more than in the other direction.   
     
     
         5 . The insertion tongue as claimed in  claim 1 , wherein
 the belt retention portion is bent out of the plane of the insertion portion and   the extent direction of the slot has an angle with respect to the insertion portion between 10 and 19 degrees.   
     
     
         6 . The insertion tongue as claimed in  claim 1 , wherein
 the bent edge portion of the metal plate is bent, in particular bent at right angles, out of the opening plane of the slot-like opening in the direction toward the plane of the insertion portion.   
     
     
         7 . The insertion tongue as claimed in  claim 1 , wherein
 the bent edge portion of the metal plate is bent, in particular bent at right angles, out of the opening plane of the slot-like opening, away from the plane of the insertion portion.   
     
     
         8 . The insertion tongue as claimed in  claim 1 , wherein
 the bent edge portion of the metal plate is embedded in a plastics strand which has an outer contour which is partially curved in cross-section,   wherein the curved outer contour is preferably parallel with the outer contour of the bent edge portion.   
     
     
         9 . The insertion tongue as claimed in  claim 8 ,
 wherein   the curved outer contour of the plastics strand is partially provided with teeth and partially with webs which have a smooth outer face.   
     
     
         10 . An insertion tongue for a belt lock of a safety belt system, comprising:
 an insertion portion which is suitable for insertion in the belt lock and   a belt retention portion which has a slot for introducing and redirecting a safety belt,   wherein the insertion tongue comprises a metal plate having a slot-like opening,   
       wherein
 an edge portion of the metal plate, which edge portion delimits the slot-like opening, is embedded in a plastics strand which has a partially curved outer contour in cross-section, and 
 the outer contour of the plastics strand is at least partially provided with teeth which inhibit sliding of the safety belt in one direction more than in the other direction. 
 
     
     
         11 . A method for producing an insertion tongue as claimed in  claim 1 , comprising the steps of:
 punching a metal plate with a slot-like opening being formed,   the punched metal plate is deep-drawn and   an edge portion of the metal plate, which edge portion delimits the slot-like opening, is bent out of the opening plane of the slot-like opening in such a manner that the bent edge portion has a hook-like cross-section, and   embedding the bent edge portion in a plastics material.