FR2507092A1 - SECURITY FIXING FOR SKI - Google Patents

Abstract

A safety ski binding comprises a holding device which is mounted in an articulated manner on a main piece and is tensioned by a movable tensioning device which is of the type of a knee-joint device and comprises two movable parts as well as an elastic system, the binding comprising a stop system which allows the boot to be clamped tightly in the binding simply by putting the binding on.

Description

 The present invention relates to a ski safety binding intended to hold a boot on a ski. Although the device according to the invention can be used to hold any of the parts of the boot1 while skiing, it is however more specially designed to hold one of the ends of the boot and in particular the quarry thereof.

 The purpose of the present invention is to improve the existing bindings and more particularly the bindings energized by systems of the so-called toggle type and proposes a binding whose fitting can be done in step in, that is to say automatic. The binding according to the invention also offers the advantage of being able to remove shoes manually and voluntarily without significant effort. The proposed binding is, as we will see later, particularly comfortable and safe.

 The binding according to the invention is characterized in that it comprises a retaining assembly (1) energized by a mobile energizing assembly (2), said retaining assembly (1) comprising a jaw (7) and a pedal of elevation (9) is disposed articulated on a body (5) around a transverse axis (6) to pivot between a retaining position and a shoe release position, said movable energization assembly (2) being of the toggle type consists of two mobile elements (10,11) articulated to each other by one of their ends at a connection point (b) while the free end of one (10) is articulated on the body (5) at a point of attachment (a) and that the free end of the other (11) is articulated on the retaining assembly (1) at a pressure point (c), the connection point (b), the attachment point (a) and the pressure point (c) thus constituting the three points (a, b, c) of the toggle joint, said mobile energization assembly ( 2) comprises an elastic system (13,41,42,110) and is movable between a retaining position and a release position, and said fixing comprises a stop (39,390,391,392) intended to cooperate with the plain of the movable elements (10,11 ) of the mobile energization assembly (2) during its passage from its retaining position to its release position, the cooperation taking place before the three points (a, b, c) of the toggle joint are aligned.

 It is thanks to the stop (39,390,391,392) that the binding, although it is of the toggle type, can be fitted enstep in and that it can be armed to be placed in the open position ready to be raised. Indeed, as we will see in the description which follows, it is this stop which, by cooperation with one of the mobile elements of the energization assembly, will revive it during putting on to make it pass from its release position to its retaining position. On the other hand, it is also on this stop that the energization assembly will bear to force the retaining assembly to open during the voluntary opening of the binding.

 According to additional characteristics, the stop is either arranged on the retaining assembly, or on the body, or on the slide.

 According to another characteristic, the retaining position of the mobile energization assembly is defined by another stop (34,340) which cooperates with one of the mobile elements.

 According to another characteristic, one of the mobile elements comprises an elastic system such as a compression and / or tension spring.

 Other characteristics and advantages of the invention will emerge from the description which follows with reference to the appended drawings which are given only by way of nonlimiting examples.

 Figures 1 to 10 show an embodiment of the binding according to the invention.

 Figure 1 is a side view of the binding in the shoe retaining position.

 Figure 2 is a top view of Figure 1.

 Figure 3 is a side view of the attachment in the hulled position ready to be heaved.

 FIG. 4 is a view in longitudinal section along IV-IV of FIG. 2.

 Figure 5 is an exploded perspective view.

 FIG. 6 is a view showing a phase of the safety trip.

 Figure 7 is a view showing a phase of voluntary heaving.

 Figures 8 and 9 are views showing successive phases of the boot.

 Figure 10 is a schematic view.

 Figures II to 17 are schematic views showing variants.

 The binding according to the invention comprises a retaining assembly (1) energized by a mobile energizing assembly 2. The retaining assembly (1) is intended to securely hold one of the ends of the shoe 3 for example the heel 4, and is articulated on a body 5 around an axis XX 'transverse and parallel to the ski. On the other hand the retaining assembly 1 comprises a jaw 7 secured to a support 8 and a raising pedal 9. According to the embodiment shown in Figures 1 to 10, the jaw 7, the support 8 and the pedal 9 form a one-piece retaining assembly 1 integral in displacement. The retaining assembly 1 is pivotally mounted around the axes 6, and can evolve by pivoting between a shoe retaining position (Figure 1) and a shoe release position (Figure 3). retaining 1 is biased in its retaining position by a mobile energizing assembly 2 advantageously extending upward and serving as a manual heaving lever. Indeed, the mobile energization assembly 2 is manually operable and can move between a retaining position (fig. 1) and a release position (fig. 3). Said mobile energizing assembly 2 is of the toggle type and comprises two mobile elements 10 and 11. One of the elements 10 is constituted by at least one rigid link 12 while the other comprises an elastic system, for example a spring 13. The movable element 10 of the kneepad advantageously consists of two rigid links 12 arranged symmetrically with respect to the longitudinal plane of symmetry of the ski. Said links 12 are articulated by one of their ends 14 on the body 5 around a transverse axis YY 'parallel to the ski. The articulation is carried out by axes 15 passing through holes 16 of the rods 12. The axes 15 also taking place in holes 17 made in vertical lugs 18 of the body 5. The other end 19 of the movable element 10 is articulated on the other movable element there around an axis ZZ '. Furthermore, the lower end 20 of the movable element It is articulated on the retaining assembly 1 around an axis TT 'materialized by an axis 21 taking place in a hole 22 of the assembly 1 and in a hole 23 of the element 11. The second movable element consists of a rod 24 having at its lower part a head 25 comprising the hole 23 of articulation and a flange 26 intended to serve as a support for the spring 13. Furthermore, the spring 13 bears against the bottom 27 of a housing 28 made in an adjustment cap 29.

On the other hand, the rod 24 passes through the plug 29 through a hole 30 and said plug is screwed into a support piece (310) of substantially parallelepiped shape and laterally comprising coaxial threaded holes 320 intended to receive the screws 33 which define the axis
ZZ '. For this purpose the screws 33 include a threaded part 34, a cylindrical part 35 and a head 36. The threaded part 34 is intended to be screwed into the hole 320, while the part 35 is intended to take place in the holes 37 of the rods 12. As we have seen previously, the mobile energization assembly 2 constitutes an energization system of the so-called toggle type. The three points of said energizing toggle joint being the attachment point (a), the connection point (b) and the pressure point (c). The attachment point (a) is on the pivot axis rods 12 relative to the body 5. The pressure point (c) is on the pivot axis of the rod 24 relative to the retaining assembly 1. The connection point (b) is on the axis of pivoting between the two mobile elements 10 and 11. The energizing toggle is said to be in neutral when the pressure point (c) is located on the right joining points (a) and (b). The knee brace is said to be broken when point (c) passes to the other side of the line joining points (a) and (b). We will call (d) the pivot point of the restraint system and we see that the circle 38 centered at point (d) and passing through point (c) advantageously cuts the segment (ab) at a point (e ), but it could be otherwise count according to FIG. 17. The body 5 is advantageously, as is well known per se, slidingly mounted in a slide 31 fixed to the ski 32 and axially urged by one or more thrust springs 330.

 Figures 1, 2 and 4 show the binding in the shoe retaining position and it can be seen that the movable retaining assembly stands upwards and that its action on the retaining assembly is the force P applied to the point (c). The holding moment is therefore the product Pe. On the other hand, in this same retaining position1 the mobile energizing assembly is biased forward along F1 and this movement is advantageously limited by pressing the spring 13 against the stop 34 produced on the retaining assembly 1.

Note that it could be quite different as shown in Figure 13.

 FIG. 6 shows a phase of triggering in safety and on which it can be seen that the heel 4 of the shoe lifts vertically along F3 by forcing the retaining assembly to pivot around (d) along F and this against the action of the elastic system.

Indeed, we note that during this movement, two things happen: firstly the mobile energization assembly rocks backwards according to F5 by cooperation of the stop 34 which forces this movement, and secondly the point (c) moves upward on the circle 38. Figure 6 shows the position just before the trigger. It is indeed found that the point (c) is on the right joining the points (ab) and the kneepad is said to be at the point of balance and is ready to be broken to completely release the shoe. On the other hand, we also note that to move from the position of Figure 1 to the position of Figure 6, there was compression of the spring by a value h2 minus h1.

 Figure 7 shows a phase of voluntary heaving. As we have seen previously, the mobile energization assembly 2 is mobile and is intended to serve as a voluntary heaving lever.

For this operation, it suffices to tilt said assembly backwards according to F with the stick, the hand, the ski or the shoe
5 sure until the spring 13, therefore the movable element It comes to bear on the stop 39 made on the movable retaining assembly 1. This position is that shown in FIG. 7 and it can be seen that the axis of the force P1 applied to the mobile retaining assembly advantageously passes through point (d) and said mobile retaining assembly is therefore no longer stressed and it is then very easy to lift the heel along F3 to leave the fixation.

It is also noted that the spring 13 comes to bear on the stop 39 before the three points (abc) are aligned. We will see later that it is thanks to such an arrangement that the binding is automatically fitted in "step in". Voluntary and manual heaving is accompanied by a spring compression equal to h minus
3 h 1. It can be seen that h3 minus h1 is less than h2 minus h1, which means that the spring is compressed less during voluntary heaving than for tripping in safety. Voluntary heaving is therefore very easy, which is a particularly advantageous advantage. After voluntary removal, the binding is in the position shown in Figure 3.

In this position, the toggle is broken and the movable retaining assembly remains in the open position ready to be raised. It can also be seen that the force P2 acting on said mobile retaining assembly passes through (d).

 Figures 8 and 9 show phases of the automatic step in boot. During this operation, the binding passes from the position shown in FIG. 8 to the position shown in FIG. 1, passing through the position shown in FIG. 9. When putting on step in, the shoe, by action according to F6 on the pedal 9, causes the retaining assembly 1 to pivot around point (d) according to F7. Initially, the retaining assembly 1 pivots, bringing with it in this movement the mobile energizing assembly 2. As can be seen in Figures 3, 8 and 9, but more particularly in Figure 8, c 'is thanks to the stop 39 that the mobile energization assembly is driven. The stop 39 cooperates with one of the mobile elements II of the mobile energization assembly 2.

In fact, it can be seen in FIG. 8, that the element 11 is subjected to a torque P xe which causes its tilting along F1. Note of
3 3 more than this same stop 39 also serves when returning the binding to its position ready to be raised. That is to say in the case where we want to move the binding from the position of Figure 4, but without shoe1 to the position of Figure 3, that is to say in the position ready to be raised. Indeed, the element Il bearing on the stop 39 will force the retaining element 1 to pivot according to F4. In the embodiment shown in Figures 1 to 10, the stop 39 is integral with the retaining assembly 1 and cooperates with the spring 13 of the movable element 11. We will see later that it may be otherwise. the position of Figure 3, we see that the point (c) is above the line (ab). During the putting on, the point (c) descends while the segment (ab) pivots around (a). In the position shown in Figure 9, we see that the point (c) is on the right (ab) and the toggle is ready to be re-broken. From this position, the mobile energizing assembly becomes autonomous again and leaves the stop 39 to tilt forward along F1 to lock and urge the retaining assembly 1 on the shoe in the position shown in Figures 1 and 4 .

 Figure II is a schematic view showing another embodiment of the mobile energization assembly 2, in which the rigid link or rods 12 connect the points (b) and (c) while the other element It is produced by a tension spring 110 connecting points (a) and (b).

 FIG. 12 is a schematic view showing another embodiment of the mobile energization assembly 2, in which the two mobile elements 10 and 11 are rigid rods.

The end 19 of the link 12 is then slidably disposed in a slot 40 in the other movable element 11, the two elements being associated with each other by a tension spring 41. One could also replace said spring traction 41 by a compression spring 42 as shown in dotted lines.

 FIG. 13 schematically shows how the abutment forwards of the mobile energizing assembly 2 can also be produced. In this embodiment, it is the link 12 which, in the shoe retaining position, comes into contact with a stop 340 made on the retaining element 1.

 It is seen from Figures 1 to 13 that the stop 39 is secured to the retaining assembly l, but it can be otherwise and Figures 14 to 16 show variants.

 According to FIG. 14, the stop 390 is integral with the body 5 and is intended to cooperate with the movable element 11.

 According to FIG. 15, the stop 391 is integral with the ski 32 or the slide 31 and also cooperates with the element 11.

 Of course, it would not go beyond the scope of the invention if the stops 390 and 391 cooperated with the movable element 12.

 FIG. 16 shows a variant in which the stop 392 is integral with the body 5 and cooperates with a part 120 of the movable element 12.

 FIG. 17 shows a variant in which the circle 38 centered at (d) and passing through (c) does not intersect the segment (ab).

 It goes without saying that it would not go beyond the ambit of the invention if the two movable elements 10 and 11 included an elastic system. On the other hand, the stops 34 and 340 could also be arranged on the body 5 or the slide 31, or even on the ski 32.

 Of course, the invention is not limited to the embodiments described and shown by way of examples, but it also includes all the technical equivalents and their combinations.

Claims (15)

Claims  1. Safety binding for skiing, characterized in that it comprises a retaining assembly (energized by a mobile energizing assembly (2), said retaining assembly (1) comprising a jaw (7) and a pedal rchaussagc (9) is arranged articulated on a body (5) around a transverse axis (6) to pivot between a retaining position and a shoe release position, said movable energizing assembly (2) being of the type toggle joint consists of two movable elements (10,11) articulated to each other by one of their ends at a connection point (b), while the free end of one (10) is articulated on the body (5) at a point of attachment (a) and that the free end of the other (ll) is articulated on the retaining assembly (1) at a pressure point (c), the connection point (b), the attachment point (a) and the pressure point (c) thus constituting the three points (a, b, c) of the toggle joint, said mobile energization assembly (2) comprises an elastic system (13,41,42,110) and is movable between a retaining position and a release position, and said fixing comprises a stop (39,390,391,392) intended to cooperate with one of the movable elements (10,11) of the mobile energization assembly (2) during its passage from its retaining position to its release position, the cooperation taking place before the three points (a, b, c) of the toggle joint are aligned.  2. Ski binding according to claim 1, characterized in that the stop (39) is disposed on the movable retaining assembly (1).  3. Ski binding according to claim 1, characterized in that the stop (390,392) is arranged on the body (5)  4. Ski binding according to claim 1, characterized in that the stop (391) is arranged on the ski (32) or on the slide (31).  5. Ski binding according to any one (dts of the preceding claims, characterized in that one of the mobile elements of the mobile energization assembly (2) comprises an elastic system (13 ,! 2.110).  6. Ski binding according to claim 5, characterized in that the movable assembly of embedding (2) constitutes the voluntary heaving lever and extends upwards in the retaining position.  7. Ski binding according to claim 6, characterized in that the mobile element (10) of the mobile energization assembly (2) comprises at least one rigid link (12) whose lower end ( 14) is articulated on the body at the attachment point (a) while the other end (19) is hingedly connected to the other mobile element (11) at a connection point (b), said mobile element (ll) comprising at least one compression spring (13).  8. Ski binding according to claim 7, characterized in that the movable element (11) comprises a rod (24) articulated by its lower end to the retaining element (1) at the pressure point (c ) and the upper end of which slides in a hole (30) made in a plug (29) screwed into a support piece (31) on which the connecting rods (12) are articulated, said spring (13) driving the rod (24) and bearing on the one hand on the plug (29) and on the other hand on a flange (26) of said rod (24).  9. Ski binding according to claim 6, characterized in that the mobile energization assembly (2) comprises at least one rigid link (12) whose lower end is articulated on the retaining element ( 1) at the pressure point (c) and the upper end of which is connected to the other mobile element (11) constituted by a tension spring (110) connected by its lower end to the point of attachment (a) of the body (5).  10. Ski binding according to claim 6, characterized in that the mobile energization assembly (2) comprises at least one rigid link (12) whose lower end is articulated on the body (5) at attachment point and whose other end (b) slides in a slot (40) of the movable element (11) whose lower end is articulated on the retaining assembly (1) at the actuation point ( vs).  11. A ski binding according to any one of the preceding claims, characterized in that the binding comprises a stop (34,340) against which abuts the mobile energization assembly in its retaining position.  12. Ski binding according to claim 11, characterized in that the stop (34,340) is arranged on the retaining assembly (1).  13. Ski binding according to claim 12, characterized in that the stop (34) cooperates with the movable element (11) connecting the presson point (c) and the connection point (b).  14. Ski binding according to claim 12, characterized in that the stop (340) cooperates with the movable element (10) connecting the attachment point (a) to the connection point (b).  15. Ski binding according to any one of the preceding claims, characterized in that in its retaining position, the circle centered at the point of articulation (d) of the retaining assembly (1) and passing through the pressure point (c) intersects the straight line joining the attachment point (a) to the connection point (b).