Ski boot binding heelpiece with movable body

Abstract

Ski boot safety binding heelpiece able to occupy at least two positions, an open position and a closed position, in which latter it is suitable for the safe clamping of a ski boot for skiing purposes, the heelpiece comprising a movable body comprising a release spring to allow release of the boot by the opening of the heelpiece in the event of a force greater than a predetermined threshold, this body occupying two different positions in each of the two positions of the heelpiece, the body being movable relative to a carrier ( 1 ) about a connecting pivot, and the carrier ( 1 ) comprising a carrier base ( 3 ) and a release body comprising a release surface, in which the release surface is connected to the carrier base ( 3 ) by a first connecting means formed by the release body ( 4 ) and by a second connecting means formed by the connecting pivot connecting the carrier ( 1 ) to the movable body and at least one reinforcing arm ( 11 ).

1 . A ski boot safety binding heelpiece able to occupy at least two positions, an open position and a closed position, in which latter it is suitable for the safe binding of a ski boot for skiing purposes, the heelpiece comprising a movable body ( 21 ) comprising a release spring ( 23 ) to allow release of the boot by the opening of the heelpiece in the event of a force greater than a predetermined threshold, this body ( 21 ) occupying two different positions in each of the two positions of the heelpiece, the body ( 21 ) being movable relative to a carrier ( 1 ) about a connecting pivot ( 10 ), and the carrier ( 1 ) comprising a carrier base ( 3 ) and a release body ( 4 ) comprising a release surface, wherein the release surface is connected to the carrier base ( 3 ) by a first connecting means formed by the release body ( 4 ) and by a second connecting means formed by the connecting pivot ( 10 ) connecting the carrier ( 1 ) to the movable body ( 21 ) and at least one reinforcing arm ( 11 ). 
     
     
         2 . The ski boot safety binding heelpiece as claimed in  claim 1 , in which the release body ( 4 ) is also directly connected to the connecting pivot ( 10 ) connecting the carrier ( 1 ) to the movable body ( 21 ) and in which the release surface acts on a piston ( 24 ) of the movable body ( 21 ). 
     
     
         3 . The ski boot safety binding heelpiece as claimed in  claim 2 , in which at least that part of the release body ( 4 ) which comprises the release surface is made of plastic or of fiber-reinforced plastic. 
     
     
         4 . The ski boot safety binding heelpiece as claimed in  claim 3 , in which the release body ( 4 ) is a one-piece body made of plastic or fiber-reinforced plastic. 
     
     
         5 . The ski boot safety binding heelpiece as claimed in  claim 1 , in which the movable body ( 21 ) has a downwardly open region ( 29 ) between the jaw ( 22 ) of its forward end and a piston ( 24 ) acted upon by the release surface of the carrier ( 1 ). 
     
     
         6 . The ski boot safety binding heelpiece as claimed in  claim 1 , in which the release body ( 4 ) is a central body extending from the carrier base ( 3 ) to the upper part ( 5 ) of the carrier. 
     
     
         7 . The ski boot safety binding heelpiece as claimed in  claim 6 , comprising two lateral arms ( 11 ) arranged on either side of the release body ( 4 ). 
     
     
         8 . The ski boot safety binding heelpiece as claimed in  claim 7 , in which the lateral arms ( 11 ) define a space ( 13 ) between the release body ( 4 ) and themselves in such a way as to be able to accommodate a part ( 28 ) of the movable body ( 21 ). 
     
     
         9 . The ski boot safety binding heelpiece as claimed in  claims 6 , in which the release body ( 4 ) comprises an essentially cylindrical upper part ( 5 ) oriented transversely relative to the heelpiece, comprising a transverse tubular opening ( 6 ) designed to accommodate the pivot ( 10 ) connecting it to the movable body ( 21 ), this upper part ( 5 ) comprising the release surface. 
     
     
         10 . The ski boot safety binding heelpiece as claimed in  claim 9 , in which the release body ( 4 ) comprises a lower part connecting its upper part ( 5 ) to the carrier base ( 3 ), this lower part comprising a narrow part whose dimension measured in the longitudinal direction is between 8 and 14 millimeters. 
     
     
         11 . The ski boot safety binding heelpiece as claimed in  claim 1 , in which the movable body ( 21 ) has an amplitude of rotation of more than 70° between its two positions. 
     
     
         12 . The ski boot safety binding heelpiece as claimed in  claim 1 , in which the release body ( 4 ) and the arm or arms ( 11 ) comprise openings ( 6 ,  12 ) to accommodate the pivot ( 10 ) connecting them to the movable body ( 21 ). 
     
     
         13 . The ski boot safety binding heelpiece as claimed in  claim 1 , in which the release surface is a ramp ( 7 ). 
     
     
         14 . A device for binding a ski boot to a ski, comprising a front binding to accommodate the front part of a ski boot, and wherein it comprises a heelpiece as claimed in  claim 1  to accommodate the rear part of the ski boot. 
     
     
         15 . A ski comprising a ski boot safety binding heelpiece as claimed in  claim 1 .