EP1050326B1 - Releasable fixation for a snowglider - Google Patents

Abstract

Fixing comprises first part (1) integral with boot being fixed on second part (2) integral with board. In front, second part comprises tipping jaw (5) supported on vertical support spans (4) and against front support span (3) of first part, and in rear (20) pivoting about vertical axis using second yoke (18) and tipping about horizontal axis. Arms of stirrup are hook shaped (33), and supported on pair of boot side tenons (6). Jaw and yoke are supported on runners between which are mounted compression springs.

Description

The invention relates to a triggerable fixing for gliding board comprising a first part attached to a shoe and a second part intended to be fixed to the gliding board and in which the first part is retained at least approximately by its two ends on the second part by moving parts held in place taken with the first part under the action of at least a spring so as to release the shoe in the event of fall forward or backward, as well as in torsion.

Such an attachment is known from patent AT 315 040. The sole of the shoe is provided with a piece U-shaped metal with housings in which are retained retaining fingers, one of which is mounted sliding against the action of a spring in a case attached to the ski. A fixation of the same type is described in the patent AT 317 738. The patent US 3 957 280 describes also a shoe of the same type, in which the two retaining fingers are slidably mounted against the action of one or two springs. In the bindings described in US Patents 3,834,723 and 4,191,395, sliding locking fingers are mounted in the sole of the shoe and cooperate with surfaces formed in two rooms, respectively one piece, fixed to the ski. A solution of the same type as that described in patent US 3,957,280 has been taken up in US Patent 4,245,409. These constructions completely remove the adjustment of the shoe size fastening, i.e. to have a truly universal attachment and allow reduce the number of pieces. However, these bindings could never really be sold because they have a major drawback: deterioration of the sensitive surfaces of the sole the shoe, i.e. surfaces participating directly at the release of the fixation in case of fall. However, these fasteners have an advantage interesting, which lies in the possibility of conform the ends of the shoe very free, in particular to remove the sidewalks before and rear which are necessary for the fixings of usual ski, and round the underside of the sole at its ends so as to facilitate market.

To overcome the disadvantages of shoes with fixation integrated according to the aforementioned prior art, it has been proposed to make a fixing in three parts, know a first part intended to be attached to the gliding board, a second part secured to the shoe and a third part connecting the first and second parts, only the first and third parts being arranged so as to constitute a triggerable link in the event of a fall. The shoe can be conventional. Such fasteners are described in US Patents 3,918,732, 4,191,395 and in patent FR 2,659,565. These fasteners are relatively large and are intended for conventional type shoes with a sidewalk front and a sidewalk for their fastenings on the middle part. An adaptation to the size of the shoe means of fixing the latter on the intermediate part remains necessary.

The invention aims to preserve the independence of means for triggering in torsion and in front fall found in the stopper and heel piece, which allows better control tripping forces in each case.

Document FR-A-2 483 793 describes a fixing according to the preamble of claim 1.

In the binding according to the invention, the first part, integral with the shoe, has a pair of side studs on the back, and in that the second part, integral with the board slides, includes a moving part at the back consisting of a stirrup mounted pivoting about an axis transverse to the binding and pivoting about an axis vertical, the arms of this stirrup coming to retain the let's take part one and build on these tenons by ramps allowing tenons to do tilt the caliper against the action of the spring during a fall forward.

According to one embodiment of the invention, the first part is rigid and integral with the sole and has vertical bearing surfaces at the front front and the second part, integral with the board sliding, includes, at the front, a moving part consisting of a jaw intended to rest frontally and vertically on the bearing surfaces of the first part, this jaw being able to tilt in a vertical plane and in a horizontal plane against the action of said spring.

In this case the integral part of the sole of the shoe does not have a sensitive surface likely to disrupt the onset of fixation.

The torsional release is preferably controlled exclusively by the jaw. For this purpose, the stirrup is based on the spring, more precisely on a slide pushed by the spring, by a part rounded in an arc centered on the vertical axis of pivoting of the stirrup, so that the pivoting the caliper does not change the compression of the spring.

The jaw is preferably articulated by a ball joint allowing it to tilt in all sense.

The bracket is preferably mounted pivoting around a horizontal axis in a stirrup mounted pivoting around of a central pivot and the horizontal pivot axis of the retaining clip is located above its base by which the stirrup leans against its slide.

Heaving can be carried out by means of a lever hinged hinge behind the stirrup and acting on the stirrup through a part thrust to tip it against the action of the spring.

The trigger in forward fall is controlled by the stirrup working like a lever by the studs. This method of restraint is not very sensitive to the surface quality of the studs and parts of the hook-shaped stirrup.

The stirrup therefore offers practically no resistance when the torsional fixing is triggered. The shoe first escapes from the jaw, then the studs escape from the stirrup without stressing this one in tilting.

The first integral part of the shoe could to be the sole itself. The posts would be attached to the sole of which the front would present a sidewalk conventional retained by a usual type stop.

La figure 1 est une vue en perspective de la semelle d'une chaussure assemblée à la fixation.

La figure 2 est une vue de côté des deux parties assemblées de la fixation.

La figure 3 est une vue en perspective de la seconde partie de la fixation destinée à être montée sur une planche de glisse.

La figure 4 est une vue en coupe axiale, dans le plan de symétrie vertical, de la seconde partie de fixation représentée à la figure 3.

The accompanying drawing shows, by way of example, an embodiment of the binding according to the invention.

Figure 1 is a perspective view of the sole of a shoe assembled to the binding.

Figure 2 is a side view of the two assembled parts of the binding.

Figure 3 is a perspective view of the second part of the binding intended to be mounted on a gliding board.

FIG. 4 is a view in axial section, in the vertical plane of symmetry, of the second fixing part shown in FIG. 3.

The binding consists of a first part 1 integrated with a shoe sole and a second part 2 intended to be fixed on a plank slips.

Part 1 has a support surface at the front frontal 3 rounded in an arc of a circle around an axis vertical and, on each side of this bearing surface front, two horizontal flat spans 4 serving as vertical bearing surface for a jaw 5 of the fixation, as will be described later in relation with the second part of the binding. Back, the first part 1 is provided with a pair of tenons 6 extending horizontally on each side of the part 1, i.e. on each side of the sole of the shoe. These tenons 6 are located in an area narrowed 7 of the sole, so that practically not protrude laterally from the sides of the sole. Between the bearing surfaces 3, 4 and the tenons 6, the part 1 has a bearing surface 8 coming from rely on the second part 2 of the binding.

The second part of the binding includes a plate of base 9 on and in which the components are mounted of this second part. At the front, the plate 9 carries the jaw 5 having, in section according to FIG. 4, a C-profile whose upper arm has a wide open V notch 10 in which comes lean on the rounded support surface 3 of part 1, the jaw 5 further coming to rest vertically on the bearing surfaces 4. The lower arm 11 of the jaw 5 rests on a slide 12 mounted sliding in a longitudinal slide 13 of the base plate 9. The jaw 5 is mounted on a ball joint 14 so that it can pivot in all directions. The slide 12 is crossed by two parallel rods 15 and 16 threaded in the zone of the slide 12 and in taken with the slide 12. The end of these rods threaded 15 and 16 is pressed against a second slide 17 also sliding in the slide 13.

In its rear region, the plate 9 carries a first stirrup 18 extending transversely to the plate 9 and mounted pivoting about a vertical axis located in the plane of symmetry of part 2 of the binding, at by means of a pivot 19 on which the stirrup is retained vertically by a nut 24. In this first bracket pivoting is mounted a second bracket 20 articulated in the stirrup 18 at two opposite points 21 and 22 of its arms so that you can tilt around an axis horizontal transverse to plate 9 and located above from the base of the caliper. In its central part, the stirrup 20 has an oblong cut 23 allowing its tilting despite the presence of the nut 24. The stirrup 20 has a rounded outline towards the front 25 in an arc centered on a rear axis the axis of the pivot 19 and by which the stirrup rests against a slide 26 mounted in the slide 13. The non-coincidence of the center of curvature of the rounding 25 and the axis of the pivot 19 is intended to ensure the re-centering of the stirrups, as will be described more far. In FIG. 3, the width of this slide 26 shows the width of the sliders 12 and 17. Back, the stirrup 20 leans against an intermediate piece of thrust 27 mounted sliding longitudinally in a middle groove of plate 9 and of which the other end rests against the beak 28 of a lever voluntary heaving 29 articulated on the plate 9 about a horizontal transverse axis 30.

Between the slides 17 and 26 is mounted a pair of parallel springs 31 working in compression between the slides. The precompression of the springs 31 can be modified by means of rods 15 and 16, the rotation allows to change the position of the slide 17.

The arms 32 and 33 of the tilting stirrup 20 are shaped like a hook each having a upper ramp 34 and a lower ramp 35. In carriageway position, arms 32 and 33 are supported on the tenons 6 of the shoe by their ramp 35 under the spring thrust 31.

The slide 13 is covered with a plate 36 on which rests on the shoe. Under the jaw 5, the plate 36 is provided with a plate 37 in material facilitating the sliding of the shoe.

To fit the binding, the user introduces first the litters 4 under the jaw 5. During this introduction, the springs 31 allow a slight lifting of the jaw 5 so that the latter effectively relies on spans 4. The tenons 6 then come into contact with the ramps 34 of the stirrup 20 and tilt it back, then the arms 32 and 33 are folded over the let's stick 6.

During a forward fall, the tenons 6 slide on the ramps 35 of the stirrup 20 and tilt this stirrup in rear by compressing the springs 31, then escape of the stirrup. The shoe can then be released from the fixation.

During a fall with torsion, the bearing surface front 3 of the shoe rotates laterally the jaw 5 whose lower arm 11 repels the slide 12 by compressing the springs 31. The stirrup 20 accompanies the shoe by pivoting with the stirrup 18, slightly increasing the compression of the springs due to the offset between the center of curvature of the round 25 and the axis of the pivot 19. After stirrup release this slight increase in the compression of the springs has the effect of bringing the stirrups in the initial position, i.e. recenter.

When falling backwards, the reaches 4 tilt jaw 5 in a vertical plane to escape from that jaw. During this movement, the tenons 6 pivot in the stirrup 20, then escape from this stirrup from the front.

To remove shoes voluntarily, just press the release lever 29 which swings in rear caliper 20 via the part of push 27.

Rounding 25 could be replaced by a simple flat, that is to say a rounding of infinite radius or by any other shape ensuring a refocusing of the stirrups by the thrust of the slide 26.

According to another variant, the centering of the stirrups 18 and 20 could be ensured by the push of the slide 26 on the caliper 18. In this case the rounding 25 of the bracket 20 could be centered on the axis of the pivot 19 and the stirrup 18 would lean against the slide 26 by a rounded part whose center is located behind of the axis of the pivot 19 or by a flat or by any another form ensuring the refocusing of the stirrups by the slide 26.

According to another variant of execution, the articulation to jaw ball 5 could be replaced with a support of the jaw 5 on two vertical ramps and a horizontal ramp like some front stop jaws of conventional fasteners with toe and heel.

Claims (9)

1. A releasable binding for a slideboard, comprising a first part (1) integral with a shoe and a second part (2) which is intended to be fastened to the slideboard and in which the first part (1) is retained at least at its two ends on the second part by means of moveable components (5, 20) held in engagement with the first part under the action of at least one spring (31), so as to free the shoe in the event of a forward or rearward fall and under torsion, the first part (1), integral with the shoe, having, at the rear, a pair of lateral pegs (6), and the second part (2), integral with the slideboard, comprising, at the rear, a first moveable component having a first stirrup (20) mounted pivotably about a vertical axis, the stirrup having arms (32, 33) engaging with the pegs of the first part and coming to bear on these pegs with ramps, characterized in that the first moveable component is also pivotably mounted about an axis transverse to the binding and in that the ramps allow the pegs to cause the stirrup to tilt against the action of the spring in the event of a forward fall.
2. The binding as claimed in claim 1, characterized in that the first stirrup (20) is mounted pivotably about a horizontal axis in a second stirrup (18) mounted pivotably on a central pivot (19) about a vertical axis.
3. The binding as claimed in claim 2, characterized in that the first stirrup (20) bears on a slide (26), pushed by the spring (31), with a part shaped so as to ensure the recentering of the first stirrup, preferably a part (25) which is rounded in an arc of a circle and the center of which is located in the rear of the vertical pivot axis of the first stirrup.
4. The binding as claimed in claim 3, characterized in that the horizontal pivot axis of the first retaining stirrup (20) is located above a base with which the stirrup bears against the slide.
5. The binding as claimed in claim 1, characterized in that the first part (1) is rigid and integral with the sole of the shoe, and in the this first part has, at the front, vertical (4) and front (3) bearing surfaces, and in that the second part (2) comprises, at the front, a second moveable component consisting of a jaw (5) intended for bearing frontally and vertically on the bearing surfaces of the first part, this jaw being capable of tilting in a vertical plane and in a horizontal plane counter to the action of the spring (31).
6. The binding as claimed in claim 5, characterized in that the jaw (5) is articulated by means of a knuckle joint (14).
7. The binding as claimed in one of claims 5 or 6, characterized in that the jaw (5) and the first stirrup (20) bear on slides (12, 26), between which at least one compression spring (31) is mounted.
8. The binding as claimed in claims 2 and 5, characterized in that the jaw (5) and the two stirrups (18, 20) bear on slides (12, 26), between which at least one spring (31) operating under compression is mounted, and in that the first stirrup (20) bears on its slide (26) with a part (25) which is rounded, the rounded part centered on the vertically pivot axis of first stirrup, and in that the second stirrup (18) bears on the slide (26) with a part shaped so as to ensure a recentering of the stirrups after they have been freed, said part being shaped preferably in an arc of a circle, the center of which is located in the rear of the central pivot (19).
9. A binding as claimed in one of claims 1 to 8, characterized in that the second part comprises, in the rear of first stirrup (20), a shoe removal lever (29) acting on first stirrup by means of a thrust piece (27) counter to the action of the spring.

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