as shown in fig1 , the device according to the invention comprises various components , namely a strip ( 2 ) intended to be mounted on the upper surface of the ski ( 3 ) and resting on a base ( 4 , 7 ) so as to accommodate a rear unit ( 5 ) capable of accommodating the heel piece of the binding ( not shown ) and a front unit ( 6 ) capable of accommodating the toe piece of the binding ( not shown ). more precisely , the longitudinal strip ( 2 ) is in the form of an element based on a metal section , for example , that is subsequently machined or even a moulding , for example , made of filled plastic in order to give it a certain amount of rigidity . this longitudinal strip ( 2 ) has lateral guides that , in the form shown , consist of rails ( 10 ) that define a groove ( 11 ) between the upper surface of the ski ( 3 ) and said rail into which the protruding elements on the inside surface of units ( 5 , 6 ) engage . there is a break in this guide ( 10 ) in the middle of the platform in order to define a recess ( 13 ) intended to make it possible to fit units ( 5 , 6 ). in the form illustrated , strip ( 2 ) rests on a base consisting of two pads ( 4 , 7 ). these pads ( 4 , 7 ) can be made of a rigid material in order to improve the transmission of vertical forces . they can also be made of a viscoelastic material in order to partially damp movement of the longitudinal strip relative to the upper surface of the ski . in the form shown , this base consists of two separate pads , one of which accommodates the front and one of which accommodates the rear of strip ( 2 ). more precisely , each pad ( 4 , 7 ) has a middle portion ( 15 ) of reduced thickness . this portion ( 15 ) is used to mechanically join the two lateral parts of the pad ( 4 , 7 ) which receive contact surfaces of the strip ( 2 ) in order to facilitate handling of the pad during assembly . this portion ( 15 ) is not in contact with the upper surface of the ski and pad ( 4 , 7 ) only comes into contact with the upper surface of the ski through the two lateral areas ( 8 , 9 , 18 , 19 ) in order to ensure that forces are transmitted directly onto the edges . nevertheless , the invention also covers variants in which these two pads are assembled and form a single piece . other variants can also be envisaged in which the base is formed by two pads separated by a longitudinal gap , each pad receiving the contact surfaces from one side of the platform . it is also possible to have a base comprising four pads by combining both these variants . in the form shown , the pads that form the base have , on their front ends , protruding areas intended to be accommodated by part ( 16 ), the rear part ( 17 ) of which is elastic or even viscoelastic . viscoelastic part ( 17 ) is compressed by the rear end of the strip when the latter moves due to bending of the ski . as shown in fig2 and 3 , the base formed by pads ( 4 , 7 ) extends laterally over a width that exceeds that of the strip ( 2 ) in order to improve the lateral stability of the assembly and the transmission of vertical forces towards the edges . in the embodiment shown in fig4 , the strip comprises two distinct portions ( 40 , 41 ) which are each designed to accommodate a unit ( 5 , 6 ) on which a component of a binding ( not shown ) will be mounted . more precisely , the front ( 40 ) and rear ( 41 ) portions of the strip each comprise a part of the guide ( 42 , 43 ) delimited in the same way as for the strip described above . the two sections of the guide ( 42 , 43 ) are arranged in line with each other on the same side of the strip . in the form shown , the guide ( 43 ) of the rear portion of the strip ( 41 ) is interrupted before the front end ( 45 ) of this portion ( 41 ). the same construction can be adopted for the rear end ( 44 ) of the front portion ( 40 ) of the strip with a guide ( 42 ) that starts just before the rear terminal area ( 44 ) of portion ( 40 ) of the strip . this creates sufficient space to make it possible to fit units ( 5 , 6 ) when the binding is mounted . the base ( 53 ) that supports the strip also has a waisted section ( 52 ) underneath the area where the units that accommodate the binding are fitted . in the form shown in fig4 , the two portions ( 40 , 41 ) of the strip are arranged on a central rail ( 54 ) formed along the longitudinal centre line of base ( 53 ). these two portions ( 40 , 41 ) sit astride this rail ( 53 ) thanks to a central channel ( 56 ) which allows good lateral positioning when the assembly is mounted on the ski . in fig1 , strip ( 2 ) is fixed on the ski at several mounting points on different parts along the length of the ski . more precisely , mounting takes place in four distinct areas ( 20 , 21 , 22 , 23 ). mounting in the intermediate area ( 21 ) allows no freedom to slide because of screws that pass through holes having the same diameter as the screws . as far as the other three mounting areas ( 20 , 22 , 23 ) are concerned , a through recess is made in the strip . this recess comprises an upper portion ( 25 ), the faces of which slope and a lower part that opens out onto the lower surface of the strip ( 2 ). these through - openings are substantially longitudinally elongated ( 26 ). these recesses ( 20 , 22 , 23 ) are intended to accommodate two different types of mounts ( 30 , 32 , 33 ) that are shown in more detail in fig4 to 7 . as shown in fig5 and 6 , mount ( 32 ) has an upper part ( 35 ) that flares upwards and has the same volume as the upper part ( 25 ) of recess ( 20 ). the lower part of the bottom ( 36 ) of mount ( 32 ) also has a volume that is substantially identical , with slight clearance , to the through - opening ( 26 ) of recess ( 20 ). in this way , when mount ( 32 ) is fitted in recess ( 22 ), the sloping faces ( 37 ) of mount ( 32 ) come into contact with the sloping faces of recess ( 22 ) and therefore ensure that the area of the strip in which it is fitted is locked in position . conversely , mount ( 30 ) shown in fig7 and 8 has smaller dimensions . the upper part ( 38 ) also has sloping faces but the overall volume of upper part ( 38 ) is less than that of recess ( 20 ). additionally , the studs ( 39 ) that form the lower part of mount ( 30 ) also have a diameter that is less than the longitudinal dimensions of openings ( 26 ) in recess ( 20 ). in this way , the mounting point constituted by mount ( 30 ) prevents any sideways or vertical movement of the area of strip ( 2 ) in which it is installed . in contrast , there is freedom to move longitudinally and this is exploited during bending of the ski . the upper part of strip ( 2 ) is intended to receive the two units ( 5 , 6 ) designed to accommodate the heel piece and toe piece respectively of the binding ( these are not shown ). to achieve this , front unit ( 6 ) has an upper surface that is substantially flat with holes for mounting the toe piece . unit ( 6 ) has lateral portions ( 46 ), the inside faces of which have features intended to cooperate with the guide or rail ( 10 ) of strip ( 2 ). these features extend over a length that is less than the length of recess ( 13 ) in order to make it possible to install the unit and , if applicable , remove it . the upper surface of strip ( 2 ) comprises a recess ( 47 ) intended to accommodate a notched plate ( 48 ). this plate ( 48 ) cooperates with a mechanism that is not shown but protrudes underneath the lower surface of front unit ( 6 ) so as to allow adjustment of the longitudinal position of unit ( 6 ) after sliding it along strip ( 2 ). additionally , rear unit ( 5 ) also comprises portions ( 51 ) that extend laterally and , on their inside surfaces , have features that allow sliding in guide ( 10 ). the same adjustment mechanism system using a notched plate ( 58 ) can be used . more precisely , the mechanism underneath unit ( 5 ) consists of a flexible plate ( 59 ) attached underneath unit ( 5 ) by a rivet ( 60 ) and held in a downward position by a spring ( 61 ). in this way , the lateral notches ( 62 ) of this plate ( 59 ) cooperate with the notches ( 63 ) on plate ( 58 ). a force exerted on the rear part of plate ( 59 ) raises it and ensures release of the notched areas ( 62 , 63 ). in the form shown , unit ( 5 ) comprises , on its upper surface , an additional guide that can accommodate the moving part of the heel piece . nevertheless , the invention also covers variants in which the entire heel piece is screw fastened onto a substantially flat rear unit . wide variety of options of adjusting the stiffness of the ski by locking the strip on the board in different modes ; wide variety of options of transmitting forces onto the ski by choosing the shape of the base extremely easy to install ; the ability to adjust the position of each component of the binding ; good thrust transfer .
a device for mounting the components of a safety binding on a ski , comprising : a longitudinal strip that has , on either side , a guide with a break in its middle ; two units each intended to accommodate one of the components of the safety binding , each unit being mounted on said strip with the possibility of adjusting its longitudinal position by sliding in said guides ; a plurality of points for mounting the longitudinal strip on the upper surface of the ski , some of these points allowing longitudinal displacement , relative to the upper surface of the ski , of the area of the longitudinal strip in which they are located ; a base intended to come into contact with the upper surface of the ski and on which said longitudinal strip rests , said base extending over a width in excess of that of said longitudinal strip .