EP0744197B1 - Snowboard with device for the mounting of a Skibinding - Google Patents

Abstract

The ski has a sole (8), with lower edges (9) and a reinforcing element, a core (13) and an outer layer (12). The central part of the ski has two feet (15) which are in the core and they are joined to a vertical part (16). This holds an upper element (17) above the upper surface of the ski that forms a raised platform. The feet, vertical part and platform are made in one piece which is H-shaped. The outer ends of the feet rest on the lower edges and the vertical part passes through the upper surface of the ski.

Description

The present invention relates to a board for sliding on snow, such as a ski comprising a device for mounting a fastening a shoe. The board according to the invention can be a ski downhill, cross-country skiing, monoskiing or snowboarding.

Traditionally, an alpine ski is equipped on its face upper, of a binding for a shoe, this binding comprising the more often a front stop and a heel piece which are placed on the face upper part of the ski and which are fixed by screwing into the body of the ski.

An alpine ski is very schematically made up of a set lower composed of a sole bordered with metal edges, and possibly covered with a reinforcing element, and a set upper composed at least of a filler core, an element of reinforcement and an outer shell, either in part in the form of shell, either in several parts composed of side edges and a superior protective element.

In the case of a hull ski, the base of the hull is very often made up of two lateral edges resting on part of their width on the lower assembly, i.e. either directly on the edges metallic, either on the reinforcing element covering these edges, or finally on an intermediate film (adhesive film or elastic film).

To ensure proper guidance of the ski, it is important that the transmission of forces between the skier's shoe and the edge of a ski building on the snow is as direct as possible. The number of structural elements of the ski through which the forces must pass between snow and shoes is an unfavorable factor for good ski guide.

This phenomenon is amplified when using a heightening for mounting the shoe binding.

Because the current skis are narrower on the skate, that is to say in the mounting area of the fasteners, than previously, the boot overflows on either side of the side walls of the ski. It results, when taking edges on a steep slope, that the shoe can rest on the surface of the snow, which results in a imbalance of the skier which can cause his fall, or at least him waste time, which is detrimental during a competition.

To remedy this drawback, it was imagined to climb on the upper face of the ski a raised plate which allows a greater angulation of the ski compared to the snow before the shoe does not rest on the surface of the latter.

Some plates are metallic and simply attached to the upper face of the ski, forming only spacers between this upper face and the plate of the stop or the heel piece.

It is also known to fix, on the upper face of the ski, a raising plate constituted by a layer of visco-elastic material, glued to the ski, and covered with a stress plate. Different forms of execution based on this basic concept are possible, as described in particular in documents FR-A-2 638 651 and FR-A-2 664 823.

Such a solution makes it possible to ensure, in addition to the elevation of the shoe compared to snow, an unclamping function of the boot compared to skiing, and also a cushioning function, in particular by shearing the layer of visco-elastic material between the upper face of the ski and the constraint plate. When bending a ski, there is an approximation of the toe and the heel components of the binding which exert pressure on the sole of the boot resulting in stiffening of the ski in this area and therefore by a modification of the behavior of the ski compared to its theoretical behavior. It is therefore interesting to avoid this phenomenon by ensuring a certain unclamping of the shoe-binding assembly relative to skiing, giving the latter freedom of deformation.

It is also known from document EP-A-0 490 044 of make a ski consisting of a first lower assembly or base and a second upper assembly or stiffener fixed on the base. The stiffener plays the role of a very long platform on which the shoe attachment.

In the solutions mentioned above, the fixation is mounted on an element itself fixed on the upper face of the ski. Gold, to ensure the best possible guidance of the ski, it is important that the transmission of forces between the edge of a ski, supported on snow, and the skier's shoe is as direct as possible. The interposition of a raised platform increases the number of elements by which must pass the forces between the snow and the shoe, which is an unfavorable factor for good ski guidance.

The object of the invention is to provide a board for gliding on snow equipped with a device for mounting the binding of a shoe ensuring transmission the most direct possible effort between the snow and the user's shoe.

• au moins deux éléments inférieurs en forme de pattes disposés à l'intérieur du ski, situés de chaque côté de celui-ci et prenant appui sur l'ensemble inférieur, soit directement sur les arêtes inférieures, soit indirectement sur celles-ci, par l'intermédiaire d'un renfort ou d'un joint élastique,
• au moins un élément supérieur qui, disposé au-dessus de la paroi supérieure du ski ou au niveau de cette paroi, forme une plateforme pour le montage de la fixation, et
• au moins un élément de liaison entre les éléments inférieurs et l'élément supérieur, disposé à l'intérieur du ski et traversant la paroi supérieure de celui-ci.

To this end, the board for gliding on snow that it concerns, of the type comprising a lower assembly composed of a sole bordered by lower edges and optionally a reinforcing element, and an upper assembly composed of at least one filling core, a reinforcing element and an external envelope, either in the form of a shell, or in several parts composed of side walls and an upper protective element, comprises in the central part or zone skate:

• at least two lower legs-shaped elements arranged inside the ski, located on each side of the latter and bearing on the lower assembly, either directly on the lower edges, or indirectly on these, by l '' through a reinforcement or an elastic joint,
• at least one upper element which, disposed above or at the level of the upper wall of the ski, forms a platform for mounting the binding, and
• at least one connecting element between the lower elements and the upper element, disposed inside the ski and passing through the upper wall thereof.

The effort exerted by the skier's foot is transmitted directly to the through the device composed of the platform, the link and the legs, at the lower edges of the ski.

In such a case, the force therefore does not pass through the structure of the ski, therefore by the various components of it likely to distort this force.

According to a first possibility, the lower elements, of connection and the platform consist of a single piece, this part which can have, in cross-section, a general shape of lying H, a general form of X, or a general form of U reversed.

Alternatively, in this case, the lower elements and of connection consist of a single piece, in the general form of Y or T overturned, on the upper face of which is fixed, so removable, the upper element forming a platform.

It is thus possible to bring the platform to the face upper part of the single piece, which can have advantages, in particular by having platforms that are specific to different bindings that can be fitted to the ski.

According to one possibility, the upper element is mounted on the connecting element with the interposition of a chosen damping element among viscoelastic or hyperelastic materials.

According to the behavioral characteristics that one wishes obtain, the lower elements are mounted on the lower edges or on a reinforcing element covering these, possibly with interposition of a damping material.

According to an embodiment, the lower elements, the or the connecting elements and the upper element extend over the entire mounting length of shoe binding, upper element forming a continuous platform.

Alternatively, in the case of alpine skiing, the lower elements, the connecting element or elements and the upper element are arranged in two distinct offset subsets longitudinally, the front one of which is used for mounting the front stop and including the rear one for mounting the heel of the binding.

According to one possibility, the device for mounting the binding is asymmetrical with respect to the median longitudinal plane of the ski. Through example, the number and the longitudinal position of the different elements of link and lower are different along the two sides of the platform.

According to another embodiment, the platform is length greater than that of the lower legs-shaped elements, and protrudes longitudinally on either side of them.

According to another embodiment, the connecting elements and / or the lower elements are of different lengths on both sides ski.

The platform can either be used for mounting a binding standard, for example screwed, or be constituted by a slide forming the base receiving the body of the shoe binding, stopper or heel piece. This second solution makes it possible to limit the number of parts constitutive of the whole, since a single piece plays both the role of platform and the role of the longitudinal slide, in which is mounted adjustable, in known manner, the fixing body.

Figure 1 est une vue en perspective d'un premier ski alpin équipé d'une plateforme s'étendant dans toute la zone de montage des fixations ;

Figure 2 en est une vue en coupe selon la ligne II-II de figure 1 ;

Figure 3 est une vue d'un autre ski, dans lequel la plateforme est réalisée en plusieurs parties et est amovible ;

Figure 4 en est une vue en coupe selon la ligne IV-IV de figure 3, la fixation n'étant pas représentée ;

Figure 5 est une vue en coupe, similaire à figure 4, montrant une plateforme reliée aux éléments inférieurs et de liaison par un joint visco-élastique ;

Figures 6 et 7 sont deux vues de détail en coupe transversale, représentant l'appui d'un élément sur une carre ;

Figure 8 est une vue en coupe transversale, dans la zone de patin, d'un autre ski ;

Figure 9 est une vue en coupe longitudinale d'un autre ski dans la zone de patin ;

Figure 10 est une vue en perspective, de dessous, d'un dispositif de surélévation asymétrique.

In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting examples, several embodiments of this ski:

Figure 1 is a perspective view of a first alpine ski equipped with a platform extending throughout the mounting area of the bindings;

Figure 2 is a sectional view along the line II-II of Figure 1;

Figure 3 is a view of another ski, in which the platform is made of several parts and is removable;

Figure 4 is a sectional view along the line IV-IV of Figure 3, the attachment not being shown;

Figure 5 is a sectional view, similar to Figure 4, showing a platform connected to the lower elements and connecting by a visco-elastic seal;

Figures 6 and 7 are two detail views in cross section, showing the support of an element on a square;

Figure 8 is a cross-sectional view, in the skate area, of another ski;

Figure 9 is a longitudinal sectional view of another ski in the skate area;

Figure 10 is a perspective view, from below, of an asymmetrical raising device.

FIG. 1 represents an alpine ski 2 comprising a tip 3, a heel 4 and a central part 5 or skate area intended to receive a shoe binding constituted by a stop 6 and a heel piece 7.

This ski comprises, as shown more particularly in the figure 2, a sliding sole 8, longitudinal edges 9 arranged on either side of the sole, lateral reinforcing elements 10 forming the edges of the ski, an upper wall 12 possibly profiled, and a filling core 13, for example made of polyurethane.

According to the essential characteristic of the invention, this ski includes, in its skid area, a single piece 14, in the form general of X very open, presenting two elements 15 in the form of legs arranged inside the body of the ski and each bearing on a square 9, an intermediate connecting part 16 arranged inside the body of the ski and projecting from the upper face of the ski, and an element upper 17 forming a continuous platform on which the stop 6 and heel piece 7, for example by screwing.

Figures 3 and 4 show an alternative embodiment of this ski, in which the same elements are designated by the same references than before. In this case, the ski is equipped with two separate elevation devices offset longitudinally, including the one front is used for mounting the stopper 6 and the rear one is used for mounting of the heel of the binding. On each square 9, an element is supported 15, the elements 15 being extended by an intermediate part 22 crossing the upper wall 12 of the ski. The platform 23 is fixed by screw 21 on the intermediate part 22. In this case, the platform 23 has a form of longitudinal slide, open upwards, constituting the base for the adjustable mounting of the body of attachment, toe or heel.

In the embodiment shown in Figure 5, on each square 9 is supported by an element 20 of sufficient thickness to form itself a ski edge in the area considered, the elements 20 being extended upwards by an intermediate element 22 which protrudes from the upper face of the ski, as shown in particular in FIG. 3. On the upper face of the intermediate element 22 is fixed a platform 23a for mounting the stopper 6. This is exactly similarly for the mounting of the heel piece 7. It may be noted that this platform 23a can be specific to the stop 6. The mounting can be performed for example using screws not shown. In the form execution shown in Figure 5, there is provided a layer 24 of visco-elastic material between each lower element 20 and the edge 9 corresponding, as well as a layer of visco-elastic material 25 between the intermediate element 22 and the platform 23a.

Figure 6 is a detail view of Figure 2 showing a direct support of a tab 15 on the upper face of a square 9. The figure 7 shows a variant in which, between the tab 15 and the edge 9 is disposed a lower reinforcing element 26.

FIG. 8 represents a variant of the embodiment of Figure 2, in which each leg 15 is connected to the element upper 17 by an intermediate part 27 located inside the body of the ski, and near one of the side elements 10 or edges thereof. The upper element 17 and the intermediate part 27 determine a set in the shape of an inverted U.

Figure 9 shows the central part or skid area of a another ski, seen in median longitudinal section, in which the element 17 constituting a platform is connected by a connecting element 16 to lower elements 15a in the form of legs, bearing on the edges. Each element 15a, attached to the element 16, is of length less than the length of the element 17. The element 17 constituting a platform is therefore mounted in overhang relative to the legs 15a.

FIG. 10 represents a device according to the invention alone, in perspective and from below. In this case, the upper element 17 constituting a platform is connected via connecting element 16, of a part, with two lower elements 15b in the form of legs, resting on a first edge of the ski and, on the other hand, to a lower element 15c in the form leg, resting on the other edge of the ski.

As is apparent from the above, the invention provides a great improvement to the existing technique by providing an equipped ski of a platform, and whose structure is such that the transmission of efforts between the snow and the binding of the shoe is carried out the most directly possible at the lower edges of the ski.

It goes without saying that the invention is not limited only to embodiments of this ski, described above by way of examples, it on the contrary embraces all variants. This is how the platform (17) could rest on the upper face of the ski, or be embedded in the top wall of it, or that the ski could be replaced by another board for gliding on snow, such as monoski or surfing, without departing from the scope of the invention.

Claims (16)

1. Board for gliding on snow, including a device for mounting a boot binding, of the type comprising a lower assembly composed of a sole (8) bordered by lower corners (9) and, optionally, a reinforcing element (26), and an upper assembly composed of at least one filler core (13), a reinforcing element (10) and an outer casing (12) either made of one part in the form of a shell or made of a plurality of parts composed of side walls and a protective upper element,
      characterized in that it comprises, in the central part or support region (5):

   at least two lower elements (15, 20) in the form of feet arranged inside the ski, located on each side thereof and bearing on the lower assembly, either directly on the lower corners (9) or indirectly on the latter, via a reinforcement (26) or an elastic joint (24),

   at least one upper element (17, 23) which, arranged above the upper wall of the ski or level with this wall, forms a platform for mounting the binding, and

   at least one connecting element (16, 22, 27) between the lower elements (15, 20) and the upper element (17, 23), which is arranged inside the ski and passes through the upper wall (12) of the latter.
2. Board according to Claim 1, characterized in that the lower (15) and connecting (16) elements and the platform (17) consist of a monobloc piece (14).
3. Board according to Claim 2, characterized in that the monobloc piece (14) has, seen in cross section, the general shape of an H laid on its side.
4. Board according to Claim 2, characterized in that the monobloc piece (14) has, seen in cross section, a general X-shape.
5. Board according to Claim 2, characterized in that the monobloc piece (14) has, seen in cross section, an inverted U-shape.
6. Board according to Claim 1, characterized in that the lower (20) and connecting (22) elements consist of a monobloc piece, of general Y-shape or inverted T-shape, on the upper face of which the upper element (23) forming a platform is removably fixed.
7. Board according to Claim 6, characterized in that the upper element (23a) is mounted on the connecting element with the interposition of a damping element (25) chosen from viscoelastic or hyperelastic materials.
8. Board according to one of Claims 1 to 7, characterized in that the lower elements (20) are mounted on the lower corners (9) or on a reinforcing element (26) covering the latter with the optional interposition of a damping material (24).
9. Board according to one of Claims 1 to 8, characterized in that the lower elements (15), the connecting element or elements (16) and the upper element (17) extend over the entire length where the boot binding is mounted, the upper element forming a continuous platform.
10. Board according to any one of Claims 1 to 8, characterized in that, in the case of an alpine ski, the lower elements (15, 20), the connecting element or elements (22) and the upper element (23) are arranged in two separate longitudinally offset subassemblies, the front one of which is used for mounting the front toe piece (6) and the rear one of which is used for mounting the heel piece (7) of the binding.
11. Board according to any one of Claims 1 to 10, characterized in that the device for mounting the binding is asymmetrical with respect to the longitudinal mid-plane of the ski.
12. Board according to Claim 11, characterized in that the number and the longitudinal position of the various connecting and lower elements (15b, 15c) differ along the two sides of the upper element forming a platform (17).
13. Board according to any one of Claims 1 to 12, characterized in that the platform (17) is longer than the lower elements (15a) in the form of feet and protrudes longitudinally on either side of them.
14. Board according to any one of Claims 1 to 13, characterized in that the connecting elements and/or the lower elements (15b, 15c) have different lengths on the two sides of the ski.
15. Board according to any one of Claims 1 to 14, characterized in that the platform (17, 23, 23a) is intended for mounting a standard boot binding.
16. Board according to any one of Claims 1 to 14, characterized in that the platform (23) consists of a slide channel forming a base receiving the body of the boot binding, toe piece (6) or heel piece (7).

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