Front jaw and safety ski binding with a front jaw

Abstract

A front jaw ( 1 ) of a safety ski binding with a base plate ( 3 ) and a housing ( 2 ) with a housing upper part ( 2 a ) as well as with sole holders ( 5 ) pivotable about bolts ( 6, 6′ ) forming vertically extending axes and having front and rear segments, the sole holders, at their front segments, receiving the bolts ( 6, 6′ ) in bores ( 5 a, 5′ a ) and, at their rear segments, cooperating with the sole of an inserted ski boot. The sole holders ( 5 ), at their front segments, are mounted on the housing upper part ( 2 a) in a ball-joint-like manner, so that they are movable upwards over their rear segments by tilting the bolts ( 6, 6′ ), wherein each bolt ( 6, 6′ ) projects through an elongated hole ( 11 ) extending in the ski longitudinal direction, formed in the base plate ( 3 ) and having front and rear ends ( 11 a, 11 b ), and below the elongated hole ( 11 ), is pressed towards the front end ( 11 a ) of the elongated hole ( 11 ) under the action of a spring ( 14 ), wherein the rear end ( 11 b ) forms a stop limiting the extent of tilting the bolts ( 6, 6′ ).

1 . A front jaw of a safety ski binding with a base plate and a housing with a housing upper part as well as with sole holders pivotable about bolts forming vertically extending axes and having front and rear segments, the sole holders, at their front segments, receiving the bolts in bores and, at their rear segments, cooperating with the sole of an inserted ski boot,
 characterised in that   the sole holders, at their front segments, are mounted on the housing upper part in a ball-joint-like manner, so that they are movable upwards over their rear segments by tilting the bolts, wherein each bolt projects through an elongated hole extending in the ski longitudinal direction, formed in the base plate and having front and rear ends, and below the elongated hole, is pressed towards the front end of the elongated hole under the action of a spring, wherein the rear end forms a stop limiting the extent of tilting the bolts.   
     
     
         2 . The front jaw according to  claim 1 , characterised in that, for the ball-joint-like mounting, each sole holder has a protrusion designed in the shape of a spherical segment, in particular in the shape of a hemisphere, which engages an oppositely shaped recess on the bottom side of the housing upper part. 
     
     
         3 . The front jaw according to  claim 1 , characterised in that the bolts are received in blind bores of the sole holders, wherein the protrusions are located above the ends of the blind bores. 
     
     
         4 . The front jaw according to  claim 1 , characterised in that, for the ball-joint-like mounting of the sole holders, the bolts pass through bores in the sole holders and have heads designed in the shape of a spherical segment, in particular in the shape of a hemisphere, which each engage an oppositely shaped recess on the bottom side of the housing upper part. 
     
     
         5 . The front jaw according to  claim 1 , characterised in that each bolt is biased by the spring via a pressing element. 
     
     
         6 . The front jaw according to  claim 5 , characterised in that the pressing element is designed in a block-like manner. 
     
     
         7 . The front jaw according to  claim 5 , characterised in that the pressing element, on its side facing the bolt, has a rounding partially encircling the bolt. 
     
     
         8 . The front jaw according to  claim 5 , characterised in that the pressing element is embodied to be closed in a ring-like manner and surrounds the bolt with a free space towards the front. 
     
     
         9 . The front jaw according to  claim 5 , characterised in that the pressing elements and the springs biasing them are accommodated in a cavity of the base plate. 
     
     
         10 . The front jaw according to  claims 5 , characterised in that the springs which bias the pressing elements are helical compression springs or elastomeric spring elements. 
     
     
         11 . The front jaw, in which the housing upper part at least partially covers the sole holders, according to  claim 1 , characterised in that a free space is present between the housing upper part and the sole holders. 
     
     
         12 . The front jaw according to  claim 11 , characterised in that the free space is designed such that, when moving the sole holders upwards, the housing upper part forms a further stop limiting the extent of the movement. 
     
     
         13 . The front jaw according to  claim 1 , characterised in that the elongated hole and the free space optionally present between the housing upper part and the sole holders are designed corresponding to automatic adaptation of the sole holders to soles of ski boots with standardised sole thicknesses of 19.00 mm+1.00 mm, in particular with additional clearance for movement of up to 1.00 mm. 
     
     
         14 . A safety ski binding with a heel jaw and a front jaw which is embodied according to  claim 1 .