FR2480130A1 - Safety fixing for ski boot - has clamp extended by handle with piston pressing on clamp rocker pivoting on turning eye - Google Patents

Abstract

The ski safety fixing for the ski boot consists of a clamp (2) extended by a body (5). This contains a piston (8) moved by a spring (9) against an inclined plane (34) on a rocker (22) to hold the boot vertical. The clamp is articulated round a transverse axle (24) on a pivot eye (21) which is articulated round the vertical axis (YY') of a cylindrical pivot (16). The rocker is articulated on the eye round a parallel axle (27). The piston presses a pin through the rocker (38) against a flat (48) on the pivot to hold the boot laterally.

Description

 The present invention relates to a safety binding intended to hold one of the ends of a ski boot on a ski.

More particularly, the present invention relates to fixations.

Safety heel-type measures which maintain the heel of the boot on the ski, while allowing the release of said boot in the event of excessive stress.

 We already know very many bindings comprising a jaw holding the boot and arranged so as to be able to move between a position for retaining the boot on the ski and a release position for the boot. Generally, this displacement is a rotation around an axis transverse to the ski and this displacement is made against the action of an elastic system. In this case, the release is only made when there is a vertical stress or bending at the heel. This can have disadvantages in certain cases and the manufacturers have proposed bindings releasing the shoe not only vertically, but also laterally by placing the jaw on a device of the gimbal type, or mobile around a sphere, thus giving it the possibility to pivot in all directions. The present invention therefore relates to improvements to the above-mentioned bindings by proposing a particularly simple and reliable device allowing the shoe to be released vertically and laterally.

To this end, the present invention relates to a ski safety binding intended to hold one of the ends of a shoe comprising a jaw, articulated relative to a support, around a first transverse axis, and extended by a body comprising a movable member urged by a spring against a ramp linked to the support to ensure the vertical retention of said shoe, characterized in that the first axis is disposed on a rotating part articulated around a second vertical axis carried by a fixed pivot to the support, and that the ramp is arranged on a rocker articulated on the rotating part around an axis parallel to the first axis so that the action of the movable member on the ramp applies part of the rocker against a part support fixed to the support to ensure lateral support of the shoe.

 According to an additional characteristic of the invention, the lateral pivoting of the jaw is only possible after a vertical pivoting of the latter.

Various embodiments of the present invention will be described below, by way of nonlimiting examples, with reference to the appended drawings, in which:
Figures 1 to II and 17 show a preferred embodiment of the invention and Figures i2 to 16 and 18 to 20 show alternative embodiments.

 Figure 1 is a side view in longitudinal section showing the binding retaining the shoe.

Figure 2 is a similar view showing the attachment during vertical release;
Figure 3 is a sectional view along III-III of Figure 1.

 Figure 4 is a perspective view showing a detail of the attachment.

 FIG. 5 is a sectional view along V-V of FIG. 2.

Figure 6 is a perspective view showing a detail of the attachment.

 Figure 7 is a perspective view showing more particularly the rear part of the rocker.

 Figure 8 is a perspective view showing the piston and its pressure nose.

 Figure 9 is an exploded perspective view showing more particularly the rotating part and the rocker.

 FIG. 10 is a partial sectional view along X-X of FIG. 11.

 Figure 11 is a sectional view along XI-XI of Figure 10 showing the attachment in the case of vertical stress combined with lateral stress.

 Figure 12 shows in partial section a construction variant.

 Figure 13 is a view similar to Figure 12, the fastener having undergone vertical pivoting.

 FIG. 14 is a partial perspective view showing the lower part of the jaw used in FIGS. 12 and 13.

 FIG. 15 shows the pivot used in the production of FIGS. 12 and 13.

 Figure 16 is a sectional view along XVI-XVI of Figure 12.

Figure 17 is a broken sectional view along XVII-XVII of Figure 1.

 Figure 18 is a view similar to Figure 16 showing a variant.

 Figure 19 is a partial view showing a variant of cooperation of the rocker with the pivot.

Figllr (20 shows in perspective a variant of apl area) ui.

 According to the embodiment shown, the binding is constituted by a retaining assembly 1 comprising a jaw 2 intended to hold the heel 3 of the shoe and having at its lower part, a shoeing pedal 4 being projecting, said jaw being extended backwards and upwards by a body 5. The retaining assembly 1 is arranged movable in all directions relative to the ski 6 against the action of an elastic system.

To do this, the body 5 comprises a recess 7 along its general axis to receive the elastic system constituted by a sliding piston 8 biased by a spring 9. An adjustment plug 10 is screwed to the rear part of the body to adjust the initial tension spring. The recess 7 is of cylindrical shape and the piston 8, of corresponding shape slides along the axis of this recess.

 The piston 8 comprises a cylindrical part II and a transverse pressure nose 12 extending perpendicular to the sliding axis (Fig.8). The piston is free in translation and is locked in rotation by a finger 13 integral with the body 5, cooperating with a longitudinal groove 14 formed in the piston 8. The retaining assembly 1 is arranged pivoting vertically along F1 about a horizontal axis XX 'and laterally along F2 around a vertical axis YY'.

To do this, the retaining assembly 1 comprises a recess 15 open downward and disposed between the jaw 2 and the body 5 to receive a pivoting assembly. This is pivotally mounted on a pivot 16 of cylindrical shape and extending vertically and serving as a pivot for rotation along the vertical axis YY 'of the retaining assembly 1. Said pivot 16 is linked to the ski 6 so well known in itself that we will not describe in detail. Note only that said pivot 16 is fixed on a support 17 sliding in a slide 18 fixed to the ski 6. This sliding takes place against the action of a so-called thrust spring 19, disposed around an adjusting screw in position 20 .

The pivoting assembly comprises a rotating part 21 and a rocker 22. This assembly is housed in the recess i5 so as to be integral with the retaining assembly l in lateral pivoting according to
F2 around the pivot 16. To do this, the rotating part 21 is arranged rotating around the pivot 16 and for this purpose comprises a cylindrical hole 23 opening downwards, receiving the upper part of said pivot 16. The rotating part 21 is blocked in vertical translation by an axis 24 taking place in a groove 25 made on a part of the pivot 16 allowing the rotation of the axis 24. As can be seen in Figures 2 and 3, the axis 24 is perpendicular to the axis YY 'and serves as a hinge axis XX' for the vertical pivoting of the jaw. On the other hand, a rocker 26 is pivotally disposed relative to the rotating part around an axis 27 parallel to the axis 24 housed in a hole 28 passing through the upper part of said rotating part. r
The rocker 22 comprises at the front part a recess 29 in which the rotating part 21 takes place. The recess 29 thus defines two side walls 30 and 31 which are thus located between the rotating part 21 and the retaining assembly 1 ( see Fig. 3).

In addition, the axis 27 cooperates with two aligned holes 32 and 33. It can therefore be seen that the pivot assembly is integral in lateral pivoting with the retaining assembly. On the other hand1 the rocker 22 comprises at its rear part a ramp 34 on which the piston 8 is applied under the action of the spring 9. The ramp 34 comprises a trigger ramp 35 followed by a trigger edge 36, then d 'an opening ramp 37. It is noted that the trigger ramp 35 is compressive for the piston 8 relative to the pivot axis XX' materialized by the axis 24, and that the ramp 37 is slightly decompressive relative to this same axis to ensure the retention in the open position of the fastening. At its lower part, the rocker 22 includes a support or actuation part materialized by a transverse key 38. produced at the lower and rear part of the pivot 16. Said key has the possibility of orienting itself correctly thanks to its two cylindrical ends housed in the holes 39 and 40.

 FIG. 2 represents a vertical trip according to F2.

It can be seen that in this case, the jaw pivots about its axis 24 and that the piston 8 is pushed back by the trigger ramp 35.

When the pressure nose 12 has exceeded the trigger point 36, the shoe is released.

 Figures 10 and 11 show how a trigger is combined with lateral stress in the case of vertical stress /. In this case, there is simultaneous pivoting, on the one hand around the vertical axis YY 'and d 'other part1 around the horizontal axis XX'. It is noted that during the lateral pivoting according to F2, the dish produced on the pivot pushes back the rocker arm by making it pivot according to F3 around the axis 27. This pivoting takes place against the action of the elastic system because this forces the piston to move back .

Figures 12 to 16 show an additional feature of the invention. According to this characteristic, the movement in lateral pivoting around the axis YYw is only possible after a certain vertical pivoting of the jaw around the horizontal axis
XX '. To do this, the lower part of the jaw comprises a hollow 42 which cooperates in the heel retaining position with a projecting profile 43 produced on the pivot 16. It can therefore be seen that the pure lateral pivoting around the axis YY ' is locked (Figs 12 and 16), but is possible after vertical pivoting as shown in Figure 13.

To facilitate resetting to the carriageway position, an inlet chamfer 44 is produced on the projecting profile 43 of the pivot 16.

 FIG. 18 shows a variant in which the projection and the recess are inverted. Indeed, it is the pivot 16 which carries a hollow profile 45 and the jaw, the corresponding projection 46.

Note also that the rocker could be made more simply as shown in Figure 19 where the pivoting key 38 is replaced by a support or actuating part 47 integral with the rocker 22. We would not go beyond the scope of invention whatever the shape of the area on which the rocker support part is applied and whether the latter is integral with the pivot or independent from the pivot.

FIG. 20 shows a variant in which said zone consists of two projections 49 produced on the pivot 16
It would not go outside the scope of the invention if the two axes 27 and 44 were merged into a single axis or if the axis 27 was located below the axis 24. In addition, the movable member could as well be a tilting member mounted articulated on a transverse axis, said member being biased by a spring against the release ramp.

Claims (17)

 hevendi quotes  I. Ski safety binding intended to hold one of the extremities of a shoe comprising a jaw (2), articulated relative to a support (17), around a first transverse axis (XX '), and extended by a body (5) comprising a movable member (8) biased by a spring (9) against a ramp (34) linked to the support to ensure the vertical retention of said shoe, characterized in that the first axis (XX ') is arranged on a rotating part (21) articulated around a second vertical axis (yy ') carried by a pivot (16) fixed to the support (17), and that the ramp (34) is disposed on a rocker (22) articulated on the rotating part (21) around an axis (27) parallel to the first axis (XX ') so that the action of the movable member (8) on the ramp (34) applies a part ( 38,47) of the rocker (22) against a support part (48) fixed to the support to ensure lateral support of the shoe. 2. Ski binding according to claim 1, characterized in that the body (5) extends backwards and upwards. 3. A ski binding according to claim i or 2, characterized in that the second axis is produced by a pivot (16) of cylindrical shape extending vertically. 4. Ski binding according to claim 3, characterized in that the first axis XX 'is materialized by a pin (24) and cooperates with a groove (25) formed on the pivot (16) to ensure its retention vertical. 5. Ski binding according to any one of the preceding claims, characterized in that the support part (48) for the rocker (22) is integral with the pivot. 6.: -Fixation for ski security according to claim 5, characterized in that the support part (48) is a flat made-on the pivot. 7. Ski binding according to claim 5, characterized in that the support part (48) is constituted by two projecting profiles (49). 8. A ski binding according to any one of the preceding claims, characterized in that the rotating part (21) is of substantially parallelepiped shape and comprises at its lower part a first vertical hole (23) in which engages the pivot (16) and two parallel holes between them and perpendicular to the first, one being intended for the axis (24) of the jaw and the other for the axis (27) of the rocker. 9. A ski binding according to any one of the preceding claims, characterized in that the rocker (22) comprises a recess (29) in which the rotating part (21) takes place. 10. Ski binding according to any one of the preceding claims, characterized in that the rocker (22) comprises at its rear part, a ramp (34) extending parallel to the axis of articulation of said rocker and consisting of a first compressive release ramp (35) and a second decompressive opening ramp (37). 11. A ski binding according to any one of the preceding claims, characterized in that the part of the rocker ensuring lateral support is a pivoting key (38) comprising a plate (41). 12. Ski binding according to any one of the preceding claims, characterized in that the jaw (2) in the low position is retained laterally by cooperation of said jaw with the pivot (16).  13 ski binding according to claim lZg characterized in that the cooperation is achieved by a projection cooperating with a recess. 14. Ski binding according to claim 13 7 characterized in that the jaw (2) comprises at its lower part a recess (42) cooperating with a projecting profile (43) formed on the pivot (16). 15. Ski binding according to any one of the preceding claims, characterized in that the movable member is a piston (8) sliding along the general axis of the body and comprising a pressure nose (12) s' extending perpendicular to the sliding axis. 16. Ski binding according to claim 15, characterized in that the piston is locked in rotation by cooperation of a projection (13) disposed in the body (5) with a light (14) formed on the piston ( 8). 17. Ski binding according to any one of the preceding claims, characterized in that the axis of the rocker is located higher relative to the ski than the axis of the jaw.