EP1669111B1 - Process for a composite glide board with injected core and board obtained by this process - Google Patents

Process for a composite glide board with injected core and board obtained by this process Download PDF

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Publication number
EP1669111B1
EP1669111B1 EP05025528A EP05025528A EP1669111B1 EP 1669111 B1 EP1669111 B1 EP 1669111B1 EP 05025528 A EP05025528 A EP 05025528A EP 05025528 A EP05025528 A EP 05025528A EP 1669111 B1 EP1669111 B1 EP 1669111B1
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EP
European Patent Office
Prior art keywords
top layer
reinforcing plate
reinforcing
pins
plate
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Not-in-force
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EP05025528A
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German (de)
French (fr)
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EP1669111A1 (en
Inventor
Philippe Commier
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Salomon SAS
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Salomon SAS
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/003—Non-swivel sole plate fixed on the ski

Definitions

  • the invention relates to a method of manufacturing a gliding board composite structure and injected core.
  • the invention also relates to a gliding board with composite structure and injected core.
  • the core forms a kind of spacer between the subassemblies of upper and lower reinforcement.
  • the machined cores which are made of wood or foam and which are introduced into the mold with the stacking of the layers
  • the injected cores on the other hand whose components are injected into the mold. located in the mold.
  • these components are, for example, isocyanates and polyols which form, after expansion and polymerization, a polyurethane foam.
  • the different layers of the upper and lower subsets are placed in the mold, the mold is closed and the foam components are injected between the subassemblies.
  • a problem that arises then is to ensure that the foam is properly in place relative to the subassemblies and in particular that the upper and lower reinforcements are at the proper spacing once the foam polymerized. This problem arises particularly when there is a space between the upper reinforcing layer and the outer layer of the board, that is to say that the core foam has diffused between these two elements.
  • a first technique consists in implementing a rigid reinforcement which rests by gravity on ski reinforcing elements, or which are assembled to these elements. Requests for EP142 patent 1978 and DE 102004002897 describe such a technique.
  • Another technique consists in arranging the reinforcing layer on a three-dimensional wire structure, for example a kind of cage, which rests on the lower subset and determines the spacing between this lower subset and the upper reinforcement.
  • WO 2004/035152 discloses a method of manufacturing a sliding ski in which two rails for fixing the stop and the heel are integrated with the ski simultaneously with the injection thereof. Before the injection, the two rails are held in position relative to one another by means of connecting elements.
  • the document DE 10 2004 002 987 describes a ski in which the upper reinforcement and the lower reinforcement are connected to one another by two beams.
  • the aim of the invention is to propose to me another technique for manufacturing such an injected core ski which is easier to implement in that it does not require the use of reinforcing elements or support elements. to maintain the spacing between the upper and lower reinforcements at the time of injection of the foam.
  • the method according to the invention is intended to produce a gliding board comprising a core and sub-assemblies of upper and lower reinforcement, the upper reinforcement subassembly comprising a reinforcing plate and a top layer, and the core being injected foam "in situ" between the reinforcement subassemblies. It is characterized in that in a step of the method the upper subassembly comprising the top layer and the reinforcing plate is prepared, the preparation consisting of connecting at least locally the reinforcement plate to the outer layer from above by pegs that hold the reinforcement plate away from the top layer and establish punctures mechanically between the reinforcement plate and the top layer.
  • the gliding board according to the invention comprises a central core, upper and lower reinforcement subassemblies, the core being of injected foam, and the upper subassembly comprising a reinforcing plate and a top layer. It is characterized in that pegs mechanically connect the top layer and the reinforcing plate over at least a portion of the length of the board.
  • the figure 1 is a side view of a ski 1 which is an elongated beam conventionally comprising a curved spatula 2, a heel 3 and a central portion 4 which is commonly called the pad.
  • the beam is bent with the pad raised above the support plane of the spatula and heel.
  • the ski has a curved line of dimensions, with a classic way a minimum width in the area of the skate.
  • an interface plate 6 which is attached to the upper surface of the ski in the central zone 4.
  • the plate 6 is provided to receive front and rear retaining elements 8 and 9 of the shoe. These elements are of any appropriate type and will not be described in detail.
  • the plate 6 extends over a length greater than the length of the shoe and the bulk of the retaining elements in a longitudinal direction.
  • the plate 6 has a constant width and has in its upper part a receiving zone 7 of the retaining elements 8 and 9.
  • the receiving zone 7 comprises lateral flanges 7a and 7b which are designed as slides intended to cooperate with complementary slides of the retaining elements to allow a sliding of the retaining elements in a longitudinal direction.
  • the slides 7a and 7b cooperating with the complementary slides 8a and 8b of the front element 8.
  • the shape of the slides is not limiting and other forms may be suitable. In particular instead of a rounded shape could be an angular shape, or we could reverse the shape of the slides of the plate and the retaining element.
  • Slides are preferred because they allow mounting of the retainers on the interface without the need for mounting screws. However instead of slides could be pre-drilled housings for mounting the retaining elements with screws, or any other suitable mounting means.
  • the ski 1 represented in the Figures 1 and 2 is of the type injected nucleus "in situ" that is to say that it is the injection into the mold of the components of the core, for example isocyanates and polyols form the core after expansion and hardening and create the assembly of the structure elements of the ski.
  • the ski 1 has below the central core 9 a lower subassembly 10 comprising a sliding sole 11, a lower reinforcement 12 and two side edges 13 and 14.
  • the reinforcement 12 is of any suitable type, it can be a tablecloth fiber coated with resin or a metal reinforcement, in particular steel or aluminum alloy.
  • the method of construction of the lower subset is not limiting and in particular the reinforcement could also be formed by a superposition of reinforcing layers of fiber or metal.
  • the lower subset may also include intermediate glue films or "compatibilizer" films which improve the conditions of adhesion of the elements to each other.
  • the ski 1 has above the core an upper reinforcing subassembly 15.
  • the upper subassembly comprises a top layer 16 which covers the top of the core 9 and descends along the flanks of the ski to the side edges 13 and 14.
  • the top layer is of any suitable material, and preferably a thermoplastic material, for example polyurethane, polyamide-11, polyamide-12, or ABS or ABS / PU.
  • the top layer 16 may comprise a decorative layer, or itself be decorated.
  • top layer 16 can be shaped into a shell which, when resting on the edges, forms with the lower subassembly a closed volume in which the foam components can be injected.
  • modes of construction may also be suitable.
  • one can abstain from outer wall along the lateral flanks of the ski, and in this case the foam of the core 9 is apparent along the lateral edges of the ski.
  • the upper subassembly further comprises an upper reinforcement 17 which will be described in more detail later.
  • the interface board 6 has on its underside anchor pins.
  • pins 6a, 6b, 6c, 6d The number and position of the ankles are not limiting.
  • the pins are distributed symmetrically on the right and left parts of the interface 6 and they are distributed over the length of the interface so as to achieve a coupling between the ski and the interface that does not interfere with the ski in his bending movements significantly.
  • the pins 6a and 6b which are located on the front of the plate 6 are integrally connected to the body of the plate, and the pins 6c and 6d which are located further back are mounted in slots oblong 6e and 6f, the assembly cooperating so that these pins allow a longitudinal movement of small amplitude of the body of the plate relative to the ski, but establish a solid connection in the other directions. This movement occurs when the ski flexes in a bending or counter-flexing motion.
  • recesses can be provided on the lower face of the plate which reduce its contact surface with the ski. The figure 3 shows such recesses 6g, 6h.
  • the pegs pass through the top layer 16, and the lower end of the pegs is provided with means for attaching a reinforcing plate 17.
  • These means are, for example, a shape of a returned fir tree such as who is represented in figure 3a , grooves as represented by the figure 3b , retractable elastic slats as shown in figure 3c or any other appropriate form.
  • the pegs have a circular section and the attachment means are preferably areas of reduced section relative to the body of the ankle to facilitate the drilling of the top layer and the establishment of pegs and also to manage the sealing to the connection between the top layer and the periphery of the ankles.
  • the dowels establish point mechanical connections between the reinforcement plate and the top layer. Until the injection of the core foam they maintain the spacing between the reinforcing plate 17 and the top layer in the area of the pad. AT the injection of the core of the foam is introduced and hardens in the space between the plate 17 and the top layer. Subsequently the pins provide a mechanical anchoring connection of the plate to the structure of the ski and more particularly to the reinforcing plate 17.
  • the reinforcing plate 17 extends to the ends of the ski and forms the upper reinforcement of the ski. Thus its length is substantially equal to the length of the ski.
  • the width is equal to the distance between two pins.
  • the reinforcement plate can be placed between the dowels directly without the need to machine special housing for the anchoring of the dowels.
  • This is however only a preferred method of construction, and alternatively one could have a reinforcement plate wider than the spacing of the pins, with housings in which the end of the pins is inserted.
  • the reinforcing plate 17 is of any suitable material. Preferably it has a certain rigidity in the longitudinal direction.
  • the reinforcing plate is a resin plate coated with polymerized resin, or a metal plate, in particular steel or aluminum alloy. These types of material are interesting to use because the assembly of the ski can then be performed at a relatively low temperature, especially less than 100 ° C.
  • the reinforcement plate is perforated to reduce its weight or to facilitate the passage and expansion of the core foam between the reinforcing plate 17 and the top layer 16.
  • the dowels that are under the interface define the spacing between the reinforcing plate 17 and the top of the ski in the region of the pad 4.
  • the dowels have a length of between 5 and 15 mm and maintain a spacing greater than 1 mm between the lower face of the interface and the upper face of the reinforcing layer.
  • the spacing is provided for example by spacers such as spacers 20 and 21 which extend transversely to the longitudinal direction of the ski and which are for example glued on one side to the layer of 16 and the other on the reinforcing plate 17.
  • the spacers can be wooden blocks but could also use other means.
  • dowels of the same type as the anchor pins of the interface. These dowels would be assembled by gluing or other technique to the inner face of the top layer. In this case the reinforcing plate would be supported over its entire length by pins that establish point mechanical connections with the top layer.
  • FIG. 3d shows two pins 22a and 22b integrally connected to a small plate 23 which keeps them at the same distance as the dowels of the interface.
  • the wafer is intended to be assembled for example by gluing on the underside of the bottom layer.
  • the Figures 4 to 6 illustrate the construction of ski Figures 1 to 3 .
  • a flat plate 24 of thermoplastic material is placed between the jaws 25 and 26 of a thermoforming mold.
  • the jaws are machined to give the plate 24 the shape of the shell 16.
  • the upper face of the shell is not necessarily planar and the jaws can give this face a relief particularly forward and back of the plate.
  • the plate 24 is perforated during the thermoforming operation by means of punches 26a and 26b mounted on the jaw 26, the punches perforate the plate at the end of the closing phase of the mold and they penetrate into housings 25a. and 25b of the other jaw.
  • the figure 5 illustrates the assembly of the upper subassembly.
  • the interface 6 is assembled to the top layer 16, the pins are engaged in the perforations of the top layer.
  • the reinforcing plate 17 is put in place, it is hooked to the pins of the plate 6 in the region of the pad, and in front and rear of the plate 6 where it is for example maintained by bonding with intermediate spacers as it has described above.
  • the figure 6 illustrates the assembly of the ski in the injection mold.
  • the components of the lower sub-assembly 10 are placed in the lower part 30 of the mold, the upper subassembly 15 is placed on the lower sub-assembly 10 and the mold is closed with the upper part 31.
  • This upper part conforms to the shape outer layer of the top layer 16 and has a housing 31a adjusted to the outer dimensions of the plate 6.
  • the components of the foam are introduced into the empty volume extending between the upper and lower subsets. During the expansion the foam propagates between the upper and lower reinforcements as well as between the upper reinforcement and the top layer. After expansion and hardening, the foam forms the core 9 of the ski and assembles the two subassemblies together.
  • top layer could be assembled interface and possibly the reinforcing plate before the shaping operation of the top layer.
  • Other variants are still possible for the implementation of the method.
  • the interface 6 is pre-positioned on the top layer 16 at first, the reinforcement plate is attached to the top plate without being pressed against it in a second time. Finally, after assembling the ski the interface is anchored in the structure of the ski thanks to its attachment to the reinforcing plate which is itself embedded in the core foam.
  • the figure 7 illustrates another embodiment of the invention.
  • the pegs 36a, 36c, 36d of the plate 36 maintain a gap between the reinforcing plate 38 and the top layer 39 in the area of the pad.
  • the volume created by this gap is filled by the core foam.
  • the reinforcing plate 38 is pressed against the top layer.
  • the top layer is deformed upward in the interface area, but it could also have deformation of the backing plate.
  • the reinforcing plate 40 extends over a limited length which covers the central portion 4.
  • the upper subassembly comprises another traditional reinforcement 42 which is pressed against the top layer 43.
  • the pegs 46a, 46c 46d of the plate 46 hold the reinforcing plate 40 at a defined distance from the upper reinforcement 42 and the top layer 43 until the injection of the core foam takes place. Subsequently the dowels and the reinforcing plate 40 provide the anchoring of the interface 46 in the structure of the ski.
  • individual hollow plugs such as the plugs 48a and 48b shown here provide a mechanical gap connection between the reinforcing plate 49 and the top layer 50.
  • the plugs have a shouldered head which rests against the upper face of the top layer 50.
  • the interface 52 is assembled using locking elements such as the elements 53a and 53b which are shown and which are locked in the pins 48a and 48b by any appropriate means, and in particular means of screwing, latching, quarter turn means or others.
  • the interface is in two parts, respectively 50 and 51, each of these parts being provided to support a front or rear retaining element.
  • the anchoring in the support plate using the dowels is carried out in a manner similar to that described above.
  • the interface 56 is cut into segments which are separated by a succession of transverse grooves dug over most of the height of the interface. At least a portion of the segments are provided on its underside with pins such as the pins 56d, 56c, 56a which are shown. Contrary to what has been previously described, all the dowels are here integrally connected to the interface. And for example the interface with his ankles forms a single piece.
  • the different segments can play against each other in case of bending of the ski, which makes it unnecessary to provide a game between a portion of the ankles and the interface itself.
  • the interface is formed by two parallel rails 58 and 59.
  • Each of the rails carries anchor pins in a reinforcing plate 60 embedded in the core 61, such as the pins 58a and 59a which are shown.
  • the dowels ensure the anchoring of the interface and maintain the spacing of its two rails.
  • the interface itself is represented as a simple thin plate 70 which is intended to be applied against the top layer of the ski.
  • the main function of the wafer is to serve as support for the pins such as the pins 71a, 71b, 71c, 71d which are shown.
  • the pegs are provided to pass through the top layer and establish a point mechanical connection with a reinforcing plate before and after injection of the core foam.
  • the wafer could be assembled for example by gluing to the inner face of the top layer.
  • the Figures 18 to 22 relate to construction variants.
  • the ski has in cross section a so-called "beta” shape, that is to say that the top layer 75 has two bumps 75a and 75b separated by a hollow 75c.
  • the interface 76 is placed on the upper face of the top layer. Preferably the lower portion of the interface conforms to the beta form of the top layer.
  • the anchor pins such as the pins 78a, 78b are preferably located at the top of the bosses 75a and 75b.
  • the pegs are attached to a reinforcing plate 79 that they hang until the moment of the injection of the core 80. Subsequently the dowels establish point mechanical connections between the interface and the reinforcing plate.
  • the figure 18 represents a plane reinforcing plate. This is not limiting, the reinforcing plate may have in section a recessed shape to follow the shape of the recess 75c.
  • the top layer 82 rests on the edges 85, 86 by two reinforcing beams 83 and 84.
  • the reinforcing plate 88 is connected to the interface 89 by pins such as the pegs 90a, 90b which pass through the top layer 82.
  • the top layer 92 has a stepped shape with a lower floor 92a which rests on the edges and an upper floor 92b of reduced width.
  • the interface 93 rests on the outer face of the upper stage 92b.
  • pegs such as the pegs 94a, 94b are anchored in the reinforcing plate 95.
  • the reinforcing plate extends laterally beyond the pegs to the level of the step between the two floors of the ski. .
  • the reinforcement is perforated to facilitate the expansion of the foam.
  • the reinforcement plate could have a smaller width.
  • the Figures 21 and 22 show construction variants of the reinforcement plate.
  • the reinforcing plate 96 laterally has two flaps 96a, 96b which go up towards the top layer 97. These flaps reinforce the rigidity of the reinforcement 96.
  • the reinforcement can be advantageously made of metal, and its shaping can be achieved by pressing.
  • the reinforcement can be perforated.
  • the flaps could be folded towards the lower subset.
  • the middle zone of the reinforcing plate 98 has longitudinal corrugations such as the corrugations 98a and 98b which are shown. These corrugations contribute to reinforce the rigidity of the reinforcement plate.
  • the reinforcing plate is connected to the interface by pins passing through the top layer of the ski and which maintain the reinforcing plate spaced from the top layer.
  • the reinforcing plate could be formed by a profile of variable thickness in a cross section.
  • the interface which is located above the top layer is a preferred embodiment, but this interface is not essential.
  • the invention is not limited to the manufacture of a ski, it can also be applied to the manufacture of a gliding board such as a snowboard or a short ski.

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  • Laminated Bodies (AREA)
  • Sliding-Contact Bearings (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The method involves constructing an upper reinforcement sub-assembly (15), of a sliding board, comprising an upper layer (16) and a pierced reinforcement plate (17), by connecting the plate with the upper layer using pins (6a, 6b). The pins maintain the plate to be separated from the upper layer and establish mechanical connections between the plate and the upper layer. The sliding board has lower reinforcement sub-assembly (10) comprising intermediate adhesive films or compatibilizing films and has a central core (9) in injected foam. An independent claim is also included for a sliding board comprising a central core made of injected foam.

Description

L'invention concerne un procédé de fabrication d'une planche de glisse en structure composite et à noyau injecté.The invention relates to a method of manufacturing a gliding board composite structure and injected core.

L'invention concerne également une planche de glisse à structure composite et noyau injecté.The invention also relates to a gliding board with composite structure and injected core.

De façon classique une planche de glisse telle qu'un ski ou un surf de neige comprend une superposition de couches de renfort imprégnées de résine, de glisse et de décor qui forment des sous-ensembles supérieur et inférieur et qui sont disposées sur le dessus d'un noyau.Conventionally, a gliding board such as a ski or a snowboard comprises a superposition of reinforcement layers impregnated with resin, glide and decoration which form upper and lower subsets and which are arranged on top of each other. 'a core.

Le noyau forme une sorte d'entretoise entre les sous ensemble de renfort supérieur et inférieur.The core forms a kind of spacer between the subassemblies of upper and lower reinforcement.

Il existe deux types principaux de noyaux, les noyaux usinés d'une part qui sont en bois ou en mousse et qui sont introduits dans le moule avec l'empilage des couches, et les noyaux injectés d'autre part dont les composants sont injectés in situ dans le moule. Ces composants sont par exemple des isocyanates et polyols qui forment après expansion et polymérisation une mousse de polyuréthane.There are two main types of cores, the machined cores on the one hand, which are made of wood or foam and which are introduced into the mold with the stacking of the layers, and the injected cores on the other hand whose components are injected into the mold. located in the mold. These components are, for example, isocyanates and polyols which form, after expansion and polymerization, a polyurethane foam.

C'est à cette seconde technique de mise en oeuvre du noyau que l'invention se rapporte plus particulièrement.It is to this second technique of implementation of the core that the invention relates more particularly.

Pour réaliser un ski à noyau injecté, on place dans le moule les différentes couches des sous-ensembles supérieur et inférieur, on referme le moule et on injecte les composants de la mousse entre les sous-ensembles.To make an injected core ski, the different layers of the upper and lower subsets are placed in the mold, the mold is closed and the foam components are injected between the subassemblies.

Un problème qui se pose alors est de faire en sorte que la mousse se mette bien en place relativement aux sous-ensembles et en particulier que les renforts supérieurs et inférieurs se trouvent au bon écartement une fois la mousse polymérisée. Ce problème se pose particulièrement lorsqu'il existe un espace entre la couche de renfort supérieure et la couche externe de la planche, c'est-à-dire que de la mousse du noyau s'est diffusée entre ces deux éléments.A problem that arises then is to ensure that the foam is properly in place relative to the subassemblies and in particular that the upper and lower reinforcements are at the proper spacing once the foam polymerized. This problem arises particularly when there is a space between the upper reinforcing layer and the outer layer of the board, that is to say that the core foam has diffused between these two elements.

Une première technique consiste à mettre en oeuvre un renfort rigide qui repose par gravité sur des éléments de renforcement du ski, ou qui sont assemblés à ces éléments. Les demandes de brevet EP142 1978 et DE 102004002897 décrivent une telle technique.A first technique consists in implementing a rigid reinforcement which rests by gravity on ski reinforcing elements, or which are assembled to these elements. Requests for EP142 patent 1978 and DE 102004002897 describe such a technique.

Une autre technique consiste à disposer la couche de renfort sur une structure filaire à trois dimensions, par exemple une sorte de cage, qui repose sur le sous-ensemble inférieur et détermine l'écartement entre ce sous-ensemble inférieur et le renfort supérieur.Another technique consists in arranging the reinforcing layer on a three-dimensional wire structure, for example a kind of cage, which rests on the lower subset and determines the spacing between this lower subset and the upper reinforcement.

Le document WO 2004/035152 décrit une méthode de fabrication d'un ski de glisse dans laquelle deux rails servant à la fixation de la butée et de la talonnière sont intégrés au ski simultanément à l'injection de celui-ci. Avant l'injection, les deux rails sont maintenus en position l'un par rapport à l'autre grâce à des éléments de liaison.The document WO 2004/035152 discloses a method of manufacturing a sliding ski in which two rails for fixing the stop and the heel are integrated with the ski simultaneously with the injection thereof. Before the injection, the two rails are held in position relative to one another by means of connecting elements.

Le document DE 10 2004 002 987 décrit un ski dans lequel le renfort supérieur et le renfort inférieur sont reliés l'un à l'autre par deux poutres.The document DE 10 2004 002 987 describes a ski in which the upper reinforcement and the lower reinforcement are connected to one another by two beams.

L'invention vise à proposer me autre technique de fabrication d'un tel ski à noyau injecté qui soit plus facile à mettre en oeuvre en ce sens qu'elle ne nécessite pas l'utilisation d'éléments de renforcement ou d'éléments de support pour maintenir l'écartement entre les renforts supérieur et inférieur au moment de l'injection de la mousse.The aim of the invention is to propose to me another technique for manufacturing such an injected core ski which is easier to implement in that it does not require the use of reinforcing elements or support elements. to maintain the spacing between the upper and lower reinforcements at the time of injection of the foam.

A cet effet le procédé selon l'invention est destiné à réaliser une planche de glisse comprenant un noyau et des sous-ensembles de renfort supérieur et inférieur, le sous-ensemble de renfort supérieur comprenant une plaque de renfort et une couche de dessus, et le noyau étant en mousse injectée "in situ" entre les sous-ensembles de renfort. Il est caractérisé par le fait que dans une étape du procédé on prépare le sous-ensemble supérieur comprenant la couche de dessus et la plaque de renfort, la préparation consistant à relier au moins localement la plaque de renfort à la couche externe de dessus par des chevilles qui maintiennent la plaque de renfort écartée de la couche de dessus et établissent ponctuellement des liaisons mécaniques entre la plaque de renfort et la couche de dessus.For this purpose the method according to the invention is intended to produce a gliding board comprising a core and sub-assemblies of upper and lower reinforcement, the upper reinforcement subassembly comprising a reinforcing plate and a top layer, and the core being injected foam "in situ" between the reinforcement subassemblies. It is characterized in that in a step of the method the upper subassembly comprising the top layer and the reinforcing plate is prepared, the preparation consisting of connecting at least locally the reinforcement plate to the outer layer from above by pegs that hold the reinforcement plate away from the top layer and establish punctures mechanically between the reinforcement plate and the top layer.

La planche de glisse selon l'invention comprend un noyau central, des sous-ensembles supérieur et inférieur de renfort, le noyau étant en mousse injectée, et le sous-ensemble supérieur comprenant une plaque de renfort et une couche de dessus. Elle est caractérisée par le fait que des chevilles relient mécaniquement la couche de dessus et la plaque de renfort sur au moins une partie de la longueur de la planche.The gliding board according to the invention comprises a central core, upper and lower reinforcement subassemblies, the core being of injected foam, and the upper subassembly comprising a reinforcing plate and a top layer. It is characterized in that pegs mechanically connect the top layer and the reinforcing plate over at least a portion of the length of the board.

L'invention sera mieux comprise en se référant à la description ci-dessous et aux dessins en annexe qui lui sont rattachés.

  • La figure 1 est une vue générale d'un ski vu de côté.
  • La figure 2 est une vue en section AA du ski de la figure 1.
  • La figure 3 représente la portion centrale du ski de la figure en section par un plan longitudinal et vertical.
  • Les figures 3a, 3b, 3c, 3d sont relatives à des détails de construction.
  • Les figures 4 à 6 illustrent différentes étapes du procédé de fabrication.
  • Les figures 7 à 11 sont relatives à des variantes de mise en oeuvre de l'invention.
  • La figure 12 montre la construction de l'interface de la figure 11.
  • La figure 13 illustre une autre variante de mise en oeuvre de l'invention.
  • La figure 14 montre le ski de la figure 13 en section transversale au niveau du patin.
  • La figure 15 est une variante de construction de l'interface des figures 13 et 14 précédentes.
  • Les figures 16 et 17 représentent une variante de construction de l'interface.
  • Les figures 18 à 22 sont relatives à d'autres variantes de construction.
The invention will be better understood by reference to the description below and attached drawings attached thereto.
  • The figure 1 is a general view of a ski seen from the side.
  • The figure 2 is a view in section AA of the ski of the figure 1 .
  • The figure 3 represents the central portion of the ski of the figure in section by a longitudinal and vertical plane.
  • The Figures 3a, 3b, 3c, 3d are relative to construction details.
  • The Figures 4 to 6 illustrate different stages of the manufacturing process.
  • The Figures 7 to 11 relate to alternative embodiments of the invention.
  • The figure 12 shows the construction of the interface of the figure 11 .
  • The figure 13 illustrates another variant of implementation of the invention.
  • The figure 14 shows the ski of the figure 13 in cross section at the level of the pad.
  • The figure 15 is an alternative construction of the interface of the figures 13 and 14 preceding.
  • The Figures 16 and 17 represent an alternative construction of the interface.
  • The Figures 18 to 22 relate to other construction variants.

La figure 1 représente en vue de côté un ski 1 qui se présente comme une poutre allongée comprenant de façon conventionnelle une spatule recourbée 2, un talon 3 et une portion centrale 4 que l'on appelle communément le patin. La poutre est cintrée avec le patin surélevé par rapport au plan d'appui de la spatule et du talon.The figure 1 is a side view of a ski 1 which is an elongated beam conventionally comprising a curved spatula 2, a heel 3 and a central portion 4 which is commonly called the pad. The beam is bent with the pad raised above the support plane of the spatula and heel.

Vu de dessus le ski a une ligne de cotes cintrée, avec de façon classique une largeur minimum dans la zone du patin.Viewed from above the ski has a curved line of dimensions, with a classic way a minimum width in the area of the skate.

On peut voir également dans la figure 1 une platine interface 6 qui est rapportée à la surface supérieure du ski dans la zone centrale 4. Selon le mode de réalisation illustré dans les figures 1 à 3 la platine 6 est prévue pour recevoir des éléments de retenue avant et arrière 8 et 9 de la chaussure. Ces éléments sont de tout type approprié et ne seront pas décrits en détail.We can also see in the figure 1 an interface plate 6 which is attached to the upper surface of the ski in the central zone 4. According to the embodiment illustrated in FIGS. Figures 1 to 3 the plate 6 is provided to receive front and rear retaining elements 8 and 9 of the shoe. These elements are of any appropriate type and will not be described in detail.

De préférence, comme cela est visible dans les figures 1 et 2, la platine 6 s'étend sur une longueur supérieure à la longueur de la chaussure et à l'encombrement des éléments de retenue selon une direction longitudinale.Preferably, as is visible in the Figures 1 and 2 , the plate 6 extends over a length greater than the length of the shoe and the bulk of the retaining elements in a longitudinal direction.

Transversalement, la platine 6 a une largeur constante et elle présente dans sa partie supérieure une zone de réception 7 des éléments de retenue 8 et 9. Selon le mode de réalisation représenté la zone de réception 7 comprend des rebords latéraux 7a et 7b qui sont conçus comme des glissières prévues pour coopérer avec des glissières complémentaires des éléments de retenue afin de permettre un coulissement des éléments de retenue selon une direction longitudinale. Dans la figure 2 on peut voir les glissières 7a et 7b coopérant avec les glissières complémentaires 8a et 8b de l'élément avant 8. La forme des glissières n'est pas limitative et d'autres formes peuvent convenir. Notamment au lieu d'une forme arrondie on pourrait avoir une forme anguleuse, ou encore on pourrait inverser la forme des glissières de la platine et de l'élément de retenue.Transversely, the plate 6 has a constant width and has in its upper part a receiving zone 7 of the retaining elements 8 and 9. According to the embodiment shown, the receiving zone 7 comprises lateral flanges 7a and 7b which are designed as slides intended to cooperate with complementary slides of the retaining elements to allow a sliding of the retaining elements in a longitudinal direction. In the figure 2 we can see the slides 7a and 7b cooperating with the complementary slides 8a and 8b of the front element 8. The shape of the slides is not limiting and other forms may be suitable. In particular instead of a rounded shape could be an angular shape, or we could reverse the shape of the slides of the plate and the retaining element.

Les glissières sont préférées car elles permettent un montage des éléments de retenue sur l'interface sans avoir besoin de vis de montage. Toutefois au lieu des glissières on pourrait avoir des logements pré-percés en vue d'un montage des éléments de retenue à l'aide de vis, ou tout autre moyen de montage approprié.Slides are preferred because they allow mounting of the retainers on the interface without the need for mounting screws. However instead of slides could be pre-drilled housings for mounting the retaining elements with screws, or any other suitable mounting means.

Le ski 1 représenté dans les figures 1 et 2 est du type à noyau injecté "in situ" c'est-à-dire que c'est l'injection dans le moule des composants du noyau, par exemple des isocyanates et des polyols forment le noyau après expansion et durcissement et créent l'assemblage des éléments de structure du ski.The ski 1 represented in the Figures 1 and 2 is of the type injected nucleus "in situ" that is to say that it is the injection into the mold of the components of the core, for example isocyanates and polyols form the core after expansion and hardening and create the assembly of the structure elements of the ski.

Le ski 1 présente au-dessous du noyau central 9 un sous-ensemble inférieur 10 comprenant une semelle de glisse 11, un renfort inférieur 12 et deux carres latérales 13 et 14. Le renfort 12 est de tout type approprié, il peut être une nappe de fibres enduites de résine ou encore un renfort en métal, notamment en acier ou alliage d'aluminium. Le mode de construction du sous-ensemble inférieur n'est pas limitatif et notamment le renfort pourrait également être formé par une superposition de couches de renfort en fibres ou métalliques. Le sous-ensemble inférieur peut également comprendre des films de colle intermédiaire ou des films "compatibilisant" qui améliorent les conditions d'adhérence des éléments les uns aux autres.The ski 1 has below the central core 9 a lower subassembly 10 comprising a sliding sole 11, a lower reinforcement 12 and two side edges 13 and 14. The reinforcement 12 is of any suitable type, it can be a tablecloth fiber coated with resin or a metal reinforcement, in particular steel or aluminum alloy. The method of construction of the lower subset is not limiting and in particular the reinforcement could also be formed by a superposition of reinforcing layers of fiber or metal. The lower subset may also include intermediate glue films or "compatibilizer" films which improve the conditions of adhesion of the elements to each other.

Le ski 1 présente au-dessus du noyau un sous-ensemble de renfort supérieur 15. Selon le mode de construction illustré, le sous-ensemble supérieur comprend une couche de dessus 16 qui couvre le dessus du noyau 9 et redescend le long des flancs du ski jusqu'aux carres latérales 13 et 14. La couche de dessus est en tout matériau approprié, et de préférence en une matière thermoplastique, par exemple en polyuréthane, polyamide-11, polyamide-12, ou encore en ABS ou ABS/PU. La couche de dessus 16 peut comprendre une couche de décoration, ou être elle-même décorée.The ski 1 has above the core an upper reinforcing subassembly 15. According to the illustrated method of construction, the upper subassembly comprises a top layer 16 which covers the top of the core 9 and descends along the flanks of the ski to the side edges 13 and 14. The top layer is of any suitable material, and preferably a thermoplastic material, for example polyurethane, polyamide-11, polyamide-12, or ABS or ABS / PU. The top layer 16 may comprise a decorative layer, or itself be decorated.

Ce mode de construction est préféré car la couche de dessus 16 peut être mise en forme selon une coque qui, lorsqu'elle repose sur les carres, forme avec le sous-ensemble inférieur un volume clos dans lequel on peut injecter les composants de la mousse. Toutefois d'autres modes de construction peuvent aussi convenir. Par exemple on pourrait avoir une structure de type sandwich avec une couche de dessus simplement à la face supérieure du noyau, et des chants latéraux formés par des plaquettes rapportées en ABS qui s'étendent sur toute la hauteur du ski, ou par des longerons qui reposent sur les carres et s'étendent sur une partie de la hauteur du ski. Egalement on peut s'abstenir de paroi externe le long des flancs latéraux du ski, et dans ce cas la mousse du noyau 9 est apparente le long des bords latéraux du ski.This mode of construction is preferred because the top layer 16 can be shaped into a shell which, when resting on the edges, forms with the lower subassembly a closed volume in which the foam components can be injected. . However other modes of construction may also be suitable. For example one could have a sandwich-like structure with a top layer simply on the upper face of the core, and side edges formed by inserts inserts ABS that extend over the entire height of the ski, or by side members that rest on the edges and extend over part of the ski's height. Also one can abstain from outer wall along the lateral flanks of the ski, and in this case the foam of the core 9 is apparent along the lateral edges of the ski.

Le sous-ensemble supérieur comprend par ailleurs un renfort supérieur 17 qui sera décrit plus en détail ultérieurement.The upper subassembly further comprises an upper reinforcement 17 which will be described in more detail later.

Comme cela est visible dans les figures 2 et 3, la platine interface 6 présente à sa face inférieure des chevilles d'ancrage. Dans le mode de réalisation illustré on peut voir des chevilles 6a, 6b, 6c, 6d. Le nombre et la position des chevilles ne sont pas limitatifs. De préférence les chevilles sont réparties de façon symétrique sur les parties droite et gauche de l'interface 6 et elles sont réparties sur la longueur de l'interface de façon à réaliser un accouplement entre le ski et l'interface qui ne gêne pas le ski dans ses mouvements de flexion de façon significative.As can be seen in the Figures 2 and 3 , the interface board 6 has on its underside anchor pins. In the illustrated embodiment we can see pins 6a, 6b, 6c, 6d. The number and position of the ankles are not limiting. Preferably the pins are distributed symmetrically on the right and left parts of the interface 6 and they are distributed over the length of the interface so as to achieve a coupling between the ski and the interface that does not interfere with the ski in his bending movements significantly.

Par exemple comme cela est représenté, les chevilles 6a et 6b qui sont situées sur l'avant de la platine 6 sont reliées solidairement au corps de la platine, et les chevilles 6c et 6d qui sont situées plus en arrière sont montées dans des logements oblongs 6e et 6f, l'ensemble coopérant de façon à ce que ces chevilles autorisent un mouvement longitudinal de faible amplitude du corps de la plaque relativement au ski, mais établissent une liaison solidaire dans les autres directions. Ce mouvement se produit lorsque le ski fléchit dans un mouvement de flexion ou de contre flexion. Pour diminuer le frottement entre la platine et la surface du ski, on peut prévoir des évidements à la face inférieure de la platine qui diminuent sa surface de contact avec le ski. La figure 3 montre de tels évidements 6g, 6h.For example, as shown, the pins 6a and 6b which are located on the front of the plate 6 are integrally connected to the body of the plate, and the pins 6c and 6d which are located further back are mounted in slots oblong 6e and 6f, the assembly cooperating so that these pins allow a longitudinal movement of small amplitude of the body of the plate relative to the ski, but establish a solid connection in the other directions. This movement occurs when the ski flexes in a bending or counter-flexing motion. To reduce the friction between the plate and the surface of the ski, recesses can be provided on the lower face of the plate which reduce its contact surface with the ski. The figure 3 shows such recesses 6g, 6h.

Comme cela est visible dans les figures les chevilles traversent la couche de dessus 16, et l'extrémité inférieure des chevilles est munie de moyens d'accrochage d'une plaque de renfort 17. Ces moyens sont par exemple une forme de sapin retourné comme celle qui est représentée en figure 3a, des rainures comme le représente la figure 3b, des lamelles élastiques rétractables comme le montre la figure 3c ou encore toute autre forme appropriée.As can be seen in the figures, the pegs pass through the top layer 16, and the lower end of the pegs is provided with means for attaching a reinforcing plate 17. These means are, for example, a shape of a returned fir tree such as who is represented in figure 3a , grooves as represented by the figure 3b , retractable elastic slats as shown in figure 3c or any other appropriate form.

De préférence les chevilles ont une section circulaire et les moyens d'accrochage sont de préférence des zones de section réduite par rapport au corps de la cheville pour faciliter le perçage de la couche de dessus et la mise en place des chevilles et aussi pour gérer l'étanchéité à la liaison entre la couche de dessus et la périphérie des chevilles.Preferably the pegs have a circular section and the attachment means are preferably areas of reduced section relative to the body of the ankle to facilitate the drilling of the top layer and the establishment of pegs and also to manage the sealing to the connection between the top layer and the periphery of the ankles.

Les chevilles établissent des liaisons mécaniques ponctuelles entre la plaque de renfort et la couche de dessus. Jusqu'à l'injection de la mousse du noyau elles maintiennent l'écartement entre la plaque de renfort 17 et la couche de dessus dans la zone du patin. A l'injection du noyau de la mousse s'introduit et durcit dans l'espace entre la plaque 17 et la couche de dessus. Ultérieurement les chevilles assurent une liaison mécanique d'ancrage de la platine à la structure du ski et plus particulièrement à la plaque de renfort 17.The dowels establish point mechanical connections between the reinforcement plate and the top layer. Until the injection of the core foam they maintain the spacing between the reinforcing plate 17 and the top layer in the area of the pad. AT the injection of the core of the foam is introduced and hardens in the space between the plate 17 and the top layer. Subsequently the pins provide a mechanical anchoring connection of the plate to the structure of the ski and more particularly to the reinforcing plate 17.

Selon le mode de réalisation illustré dans les figures 1 à 3, la plaque de renfort 17 s'étend jusqu'aux extrémités du ski et forme le renfort supérieur du ski. Ainsi sa longueur est sensiblement égale à la longueur du ski.According to the embodiment illustrated in Figures 1 to 3 , the reinforcing plate 17 extends to the ends of the ski and forms the upper reinforcement of the ski. Thus its length is substantially equal to the length of the ski.

De préférence sa largeur est égale à la distance entre deux chevilles. De cette façon la plaque de renfort peut être mise en place entre les chevilles directement sans avoir besoin d'usiner des logements particuliers pour l'accrochage des chevilles. Ceci n'est cependant qu'un mode de construction préféré, et en variante on pourrait avoir une plaque de renfort plus large que l'écartement des chevilles, avec des logements dans lesquels l'extrémité des chevilles est insérée.Preferably its width is equal to the distance between two pins. In this way the reinforcement plate can be placed between the dowels directly without the need to machine special housing for the anchoring of the dowels. This is however only a preferred method of construction, and alternatively one could have a reinforcement plate wider than the spacing of the pins, with housings in which the end of the pins is inserted.

La plaque de renfort 17 est en tout matériau approprié. De préférence elle présente une certaine rigidité selon la direction longitudinale. Par exemple la plaque de renfort est une plaque de résine enduite de résine polymérisée, ou encore une plaque de métal, notamment d'acier ou d'alliage d'aluminium. Ces types de matériau sont intéressants à utiliser car l'assemblage du ski peut alors être réalisé à une température relativement basse notamment inférieure à 100°C. Eventuellement la plaque de renfort est ajourée pour diminuer son poids ou bien pour faciliter le passage et l'expansion de la mousse du noyau entre la plaque de renfort 17 et la couche de dessus 16.The reinforcing plate 17 is of any suitable material. Preferably it has a certain rigidity in the longitudinal direction. For example the reinforcing plate is a resin plate coated with polymerized resin, or a metal plate, in particular steel or aluminum alloy. These types of material are interesting to use because the assembly of the ski can then be performed at a relatively low temperature, especially less than 100 ° C. Optionally the reinforcement plate is perforated to reduce its weight or to facilitate the passage and expansion of the core foam between the reinforcing plate 17 and the top layer 16.

Les chevilles qui sont sous l'interface définissent l'écartement entre la plaque de renfort 17 et le dessus du ski dans la zone du patin 4. Par exemple les chevilles ont une longueur comprise entre 5 et 15 mm et maintiennent un écartement supérieur à 1 mm entre la face inférieure de l'interface et la face supérieure de la couche de renfort. Sur le reste de la longueur du ski l'écartement est assuré par exemple par des entretoises telles que les entretoises 20 et 21 qui s'étendent transversalement à la direction longitudinale du ski et qui sont par exemple collées d'un côté sur la couche de dessus 16 et de l'autre sur la plaque de renfort 17. Les entretoises peuvent être des cales en bois mais on pourrait aussi utiliser d'autres moyens.The dowels that are under the interface define the spacing between the reinforcing plate 17 and the top of the ski in the region of the pad 4. For example the dowels have a length of between 5 and 15 mm and maintain a spacing greater than 1 mm between the lower face of the interface and the upper face of the reinforcing layer. On the rest of the length of the ski the spacing is provided for example by spacers such as spacers 20 and 21 which extend transversely to the longitudinal direction of the ski and which are for example glued on one side to the layer of 16 and the other on the reinforcing plate 17. The spacers can be wooden blocks but could also use other means.

Notamment on pourrait utiliser des chevilles du même type que les chevilles d'ancrage de l'interface. Ces chevilles seraient assemblées par collage ou par une autre technique à la face interne de la couche de dessus. Dans ce cas la plaque de renfort serait soutenue sur l'ensemble de sa longueur par des chevilles qui établissent des liaisons mécaniques ponctuelles avec la couche de dessus.In particular one could use dowels of the same type as the anchor pins of the interface. These dowels would be assembled by gluing or other technique to the inner face of the top layer. In this case the reinforcing plate would be supported over its entire length by pins that establish point mechanical connections with the top layer.

A titre d'illustration la figure 3d montre deux chevilles 22a et 22b reliées solidairement à une plaquette 23 de faible épaisseur qui les maintient au même écartement que les chevilles de l'interface. La plaquette est prévue pour être assemblée par exemple par collage sur la face inférieure de la couche de dessous.As an illustration figure 3d shows two pins 22a and 22b integrally connected to a small plate 23 which keeps them at the same distance as the dowels of the interface. The wafer is intended to be assembled for example by gluing on the underside of the bottom layer.

Les figures 4 à 6 illustrent la construction du ski des figures 1 à 3.The Figures 4 to 6 illustrate the construction of ski Figures 1 to 3 .

Selon la figure 4, une plaque plane 24 en matière thermoplastique est placée entre les mâchoires 25 et 26 d'un moule de thermoformage. Les mâchoires sont usinées pour donner à la plaque 24 la forme de la coque 16. La face supérieure de la coque n'est par nécessairement plane et les mâchoires peuvent donner à cette face un relief en particulier en avant et en arrière de la platine.According to figure 4 , a flat plate 24 of thermoplastic material is placed between the jaws 25 and 26 of a thermoforming mold. The jaws are machined to give the plate 24 the shape of the shell 16. The upper face of the shell is not necessarily planar and the jaws can give this face a relief particularly forward and back of the plate.

Selon ce qui est illustré en figure 4, on perfore la plaque 24 au cours de l'opération de thermoformage à l'aide de poinçons 26a et 26b montés sur la mâchoire 26,1es poinçons perforent la plaque en fin de la phase de fermeture du moule et ils pénètrent dans des logements 25a et 25b de l'autre mâchoire.According to what is illustrated in figure 4 , the plate 24 is perforated during the thermoforming operation by means of punches 26a and 26b mounted on the jaw 26, the punches perforate the plate at the end of the closing phase of the mold and they penetrate into housings 25a. and 25b of the other jaw.

La figure 5 illustre le montage du sous-ensemble supérieur.The figure 5 illustrates the assembly of the upper subassembly.

Au cours de cette opération l'interface 6 est assemblé à la couche de dessus 16, les chevilles sont engagées dans les perforations de la couche de dessus. La plaque de renfort 17 est mise en place, elle est accrochée aux chevilles de la platine 6 dans la zone du patin, et en avant et en arrière de la platine 6 où elle est par exemple maintenue par collage avec des entretoises intermédiaires comme cela a été décrit plus haut.During this operation the interface 6 is assembled to the top layer 16, the pins are engaged in the perforations of the top layer. The reinforcing plate 17 is put in place, it is hooked to the pins of the plate 6 in the region of the pad, and in front and rear of the plate 6 where it is for example maintained by bonding with intermediate spacers as it has described above.

La figure 6 illustre l'assemblage du ski dans le moule d'injection. Les composants du sous-ensemble inférieur 10 sont placés dans la partie inférieure 30 du moule, le sous-ensemble supérieur 15 est placé sur le sous-ensemble inférieur 10 puis le moule est refermé avec la partie supérieure 31. Cette partie supérieure épouse la forme extérieure de la couche de dessus 16 et elle présente un logement 31a ajusté aux dimensions externes de la platine 6.The figure 6 illustrates the assembly of the ski in the injection mold. The components of the lower sub-assembly 10 are placed in the lower part 30 of the mold, the upper subassembly 15 is placed on the lower sub-assembly 10 and the mold is closed with the upper part 31. This upper part conforms to the shape outer layer of the top layer 16 and has a housing 31a adjusted to the outer dimensions of the plate 6.

Une fois le moule fermé, les composants de la mousse sont introduits dans le volume vide s'étendant entre les sous-ensembles supérieur et inférieur. Lors de l'expansion la mousse se propage entre les renforts supérieur et inférieur ainsi qu'entre le renfort supérieur et la couche de dessus. Après expansion et durcissement la mousse forme le noyau 9 du ski et assemble entre eux les deux sous-ensembles.Once the mold is closed, the components of the foam are introduced into the empty volume extending between the upper and lower subsets. During the expansion the foam propagates between the upper and lower reinforcements as well as between the upper reinforcement and the top layer. After expansion and hardening, the foam forms the core 9 of the ski and assembles the two subassemblies together.

En variante on pourrait percer la couche de dessus au cours d'une opération spécifique. Selon une autre variante on pourrait assembler l'interface et éventuellement la plaque de renfort avant l'opération de mise en forme de la couche de dessus. D'autres variantes sont encore possibles pour la mise en oeuvre du procédé.Alternatively one could pierce the top layer during a specific operation. According to another variant could be assembled interface and possibly the reinforcing plate before the shaping operation of the top layer. Other variants are still possible for the implementation of the method.

Ainsi, grâce aux chevilles l'interface 6 est pré-positionné sur la couche de dessus 16 dans un premier temps, la plaque de renfort est accrochée à la plaque de dessus sans être plaquée contre elle dans un deuxième temps. Enfin, après assemblage du ski l'interface est ancré dans la structure du ski grâce à son accrochage sur la plaque de renfort qui est elle-même noyée dans la mousse du noyau.Thus, thanks to the dowels the interface 6 is pre-positioned on the top layer 16 at first, the reinforcement plate is attached to the top plate without being pressed against it in a second time. Finally, after assembling the ski the interface is anchored in the structure of the ski thanks to its attachment to the reinforcing plate which is itself embedded in the core foam.

La figure 7 illustre un autre mode de mise en oeuvre de l'invention. Selon ce mode de réalisation, les chevilles 36a, 36c, 36d de la platine 36 maintiennent un écart entre la plaque de renfort 38 et la couche de dessus 39 dans la zone du patin. Comme dans le cas précédent le volume créé par cet écart est comblé par de la mousse du noyau. Vers l'avant et l'arrière la plaque de renfort 38 est plaquée contre la couche de dessus. Selon ce qui est représenté, la couche de dessus est déformée vers le haut dans la zone de l'interface, mais on pourrait aussi avoir une déformation de la plaque de renfort.The figure 7 illustrates another embodiment of the invention. According to this embodiment, the pegs 36a, 36c, 36d of the plate 36 maintain a gap between the reinforcing plate 38 and the top layer 39 in the area of the pad. As in the previous case the volume created by this gap is filled by the core foam. Forward and backward the reinforcing plate 38 is pressed against the top layer. According to what is represented, the top layer is deformed upward in the interface area, but it could also have deformation of the backing plate.

Selon le mode de réalisation illustré en figure 8, la plaque de renfort 40 s'étend sur une longueur limitée qui couvre la portion centrale 4. Le sous-ensemble supérieur comprend un autre renfort 42 traditionnel qui est plaqué contre la couche de dessus 43. Dans ce cas, les chevilles 46a, 46c, 46d de la platine 46 maintiennent la plaque de renfort 40 à une distance définie du renfort supérieur 42 et de la couche de dessus 43 jusqu'à ce que l'injection de la mousse du noyau ait lieu. Ultérieurement les chevilles et la plaque de renfort 40 assurent l'ancrage de l'interface 46 dans la structure du ski.According to the embodiment illustrated in figure 8 , the reinforcing plate 40 extends over a limited length which covers the central portion 4. The upper subassembly comprises another traditional reinforcement 42 which is pressed against the top layer 43. In this case, the pegs 46a, 46c 46d of the plate 46 hold the reinforcing plate 40 at a defined distance from the upper reinforcement 42 and the top layer 43 until the injection of the core foam takes place. Subsequently the dowels and the reinforcing plate 40 provide the anchoring of the interface 46 in the structure of the ski.

Selon le mode de mise en oeuvre de la figure 9, des chevilles creuses individuelles telles que les chevilles 48a et 48b qui sont représentées assurent une liaison mécanique ponctuelle d'écartement entre la plaque de renfort 49 et la couche de dessus 50. Les chevilles ont une tête épaulée qui repose contre la face supérieure de la couche de dessus 50. L'interface 52 est assemblé à l'aide d'éléments de verrouillage tels que les éléments 53a et 53b qui sont représentés et qui sont verrouillés dans les chevilles 48a et 48b par tout moyen approprié, et notamment des moyens de vissage, d'encliquetage, des moyens quart de tour ou autres.According to the mode of implementation of the figure 9 individual hollow plugs such as the plugs 48a and 48b shown here provide a mechanical gap connection between the reinforcing plate 49 and the top layer 50. The plugs have a shouldered head which rests against the upper face of the top layer 50. The interface 52 is assembled using locking elements such as the elements 53a and 53b which are shown and which are locked in the pins 48a and 48b by any appropriate means, and in particular means of screwing, latching, quarter turn means or others.

Selon le mode de réalisation illustré en figure 10 l'interface est en deux parties, respectivement 50 et 51, chacune de ces parties étant prévue pour supporter un élément de retenue avant ou arrière. L'ancrage dans la plaque de support à l'aide des chevilles est réalisé de façon semblable à ce qui a été décrit précédemment.According to the embodiment illustrated in figure 10 the interface is in two parts, respectively 50 and 51, each of these parts being provided to support a front or rear retaining element. The anchoring in the support plate using the dowels is carried out in a manner similar to that described above.

Selon le mode de réalisation illustré dans les figures 11 et 12, l'interface 56 est découpé en segments qui sont séparés par une succession de rainures transversales creusées sur la plus grande partie de la hauteur de l'interface. Au moins une partie des segments est munie à sa face inférieure de chevilles telles que les chevilles 56d, 56c, 56a qui sont représentées. Contrairement à ce qui a été décrit précédemment l'ensemble des chevilles est ici relié solidairement à l'interface. Et par exemple l'interface avec ses chevilles forme une pièce monobloc.According to the embodiment illustrated in Figures 11 and 12 the interface 56 is cut into segments which are separated by a succession of transverse grooves dug over most of the height of the interface. At least a portion of the segments are provided on its underside with pins such as the pins 56d, 56c, 56a which are shown. Contrary to what has been previously described, all the dowels are here integrally connected to the interface. And for example the interface with his ankles forms a single piece.

En effet grâce aux rainures les différents segments peuvent jouer les uns par rapport aux autre en cas de flexion du ski, ce qui rend inutile de prévoir un jeu entre une partie des chevilles et l'interface lui-même.Indeed, thanks to the grooves the different segments can play against each other in case of bending of the ski, which makes it unnecessary to provide a game between a portion of the ankles and the interface itself.

Selon le mode de réalisation illustré dans les figures 13 à 15, l'interface est formé par deux rails parallèles 58 et 59. Chacun des rails porte des chevilles d'ancrage dans une plaque de renfort 60 encastrée dans le noyau 61, telles que les chevilles 58a et 59a qui sont représentées.According to the embodiment illustrated in Figures 13 to 15 , the interface is formed by two parallel rails 58 and 59. Each of the rails carries anchor pins in a reinforcing plate 60 embedded in the core 61, such as the pins 58a and 59a which are shown.

Dans ce cas les chevilles assurent l'ancrage de l'interface et maintiennent l'écartement de ses deux rails.In this case the dowels ensure the anchoring of the interface and maintain the spacing of its two rails.

En variante on peut prévoir localement un pont de liaison entre les deux rails, comme le pont 64 reliant les deux rails 62 et 63 dans la figure 15.Alternatively one can locally provide a connecting bridge between the two rails, as the bridge 64 connecting the two rails 62 and 63 in the figure 15 .

Selon le mode de réalisation illustré dans les figures 16 et 17, l'interface proprement dit est représenté sous la forme d'une simple plaquette 70 de faible épaisseur qui est prévue pour être appliquée contre la couche de dessus du ski. La fonction principale de la plaquette est de servir de support aux chevilles telles que les chevilles 71a, 71b, 71c, 71d qui sont représentées. Ainsi que cela a été décrit précédemment les chevilles sont prévues pour traverser la couche de dessus et établir une liaison mécanique ponctuelle avec une plaque de renfort avant et après l'injection de la mousse du noyau.According to the embodiment illustrated in Figures 16 and 17 the interface itself is represented as a simple thin plate 70 which is intended to be applied against the top layer of the ski. The main function of the wafer is to serve as support for the pins such as the pins 71a, 71b, 71c, 71d which are shown. As previously described the pegs are provided to pass through the top layer and establish a point mechanical connection with a reinforcing plate before and after injection of the core foam.

Selon une variante, la plaquette pourrait être assemblée par exemple par collage à la face interne de la couche de dessus.Alternatively, the wafer could be assembled for example by gluing to the inner face of the top layer.

Les figures 18 à 22 sont relatives à des variantes de construction.The Figures 18 to 22 relate to construction variants.

Selon la variante de la figure 18, le ski présente en section transversale une forme dite en "béta", c'est-à-dire que la couche de dessus 75 a deux bosses 75a et 75b séparées par un creux 75c.According to the variant of the figure 18 , the ski has in cross section a so-called "beta" shape, that is to say that the top layer 75 has two bumps 75a and 75b separated by a hollow 75c.

L'interface 76 est posé sur la face supérieure de la couche de dessus. De préférence la partie inférieure de l'interface épouse la forme en béta de la couche de dessus. Les chevilles d'ancrage telles que les chevilles 78a, 78b sont localisées de préférence au niveau du sommet des bosses 75a et 75b.The interface 76 is placed on the upper face of the top layer. Preferably the lower portion of the interface conforms to the beta form of the top layer. The anchor pins such as the pins 78a, 78b are preferably located at the top of the bosses 75a and 75b.

Comme dans les cas précédents les chevilles sont accrochées à une plaque de renfort 79 qu'elles tiennent accrochée jusqu'au moment de l'injection du noyau 80. Ultérieurement les chevilles établissent des liaisons mécaniques ponctuelles entre l'interface et la plaque de renfort.As in the previous cases the pegs are attached to a reinforcing plate 79 that they hang until the moment of the injection of the core 80. Subsequently the dowels establish point mechanical connections between the interface and the reinforcing plate.

La figure 18 représente une plaque de renfort plane. Ceci n'est pas limitatif, la plaque de renfort pourrait présenter en section une forme en creux pour suivre la forme du creux 75c.The figure 18 represents a plane reinforcing plate. This is not limiting, the reinforcing plate may have in section a recessed shape to follow the shape of the recess 75c.

Selon la variante de la figure 19, la couche de dessus 82 repose sur les carres 85, 86, par deux longerons de renfort 83 et 84.According to the variant of the figure 19 , the top layer 82 rests on the edges 85, 86 by two reinforcing beams 83 and 84.

Ainsi que cela a été décrit auparavant la plaque de renfort 88 est reliée à l'interface 89 par des chevilles telles que les chevilles 90a, 90b qui traversent la couche de dessus 82.As previously described, the reinforcing plate 88 is connected to the interface 89 by pins such as the pegs 90a, 90b which pass through the top layer 82.

Pour la figure 20, la couche de dessus 92 a une forme à étages avec un étage inférieur 92a qui repose sur les carres et un étage supérieur 92b de largeur réduite. L'interface 93 repose sur la face externe de l'étage supérieur 92b. Ses chevilles telles que les chevilles 94a, 94b sont ancrées dans la plaque de renfort 95. Selon le mode de réalisation illustré la plaque de renfort s'étend latéralement au-delà des chevilles jusqu'au niveau de la marche entre les deux étages du ski. Dans ce cas de préférence le renfort est ajouré pour faciliter l'expansion de la mousse.For the figure 20 the top layer 92 has a stepped shape with a lower floor 92a which rests on the edges and an upper floor 92b of reduced width. The interface 93 rests on the outer face of the upper stage 92b. Its pegs such as the pegs 94a, 94b are anchored in the reinforcing plate 95. According to the illustrated embodiment, the reinforcing plate extends laterally beyond the pegs to the level of the step between the two floors of the ski. . In this case preferably the reinforcement is perforated to facilitate the expansion of the foam.

Selon une variante de construction, la plaque de renfort pourrait avoir une largeur plus faible.According to a construction variant, the reinforcement plate could have a smaller width.

Les figures 21 et 22 montrent des variantes de construction de la plaque de renfort.The Figures 21 and 22 show construction variants of the reinforcement plate.

Selon la figure 21, la plaque de renfort 96 présente latéralement deux volets 96a, 96b qui remontent en direction de la couche de dessus 97. Ces volets renforcent la rigidité du renfort 96.According to figure 21 , the reinforcing plate 96 laterally has two flaps 96a, 96b which go up towards the top layer 97. These flaps reinforce the rigidity of the reinforcement 96.

Dans ce cas, le renfort peut être réalisé avantageusement en métal, et sa mise en forme peut être réalisée par pressage. Pour faciliter la propagation de la mousse du noyau le renfort peut être ajouré.In this case, the reinforcement can be advantageously made of metal, and its shaping can be achieved by pressing. To facilitate the propagation of the core foam the reinforcement can be perforated.

En variante les volets pourraient être repliés en direction du sous-ensemble inférieur.Alternatively the flaps could be folded towards the lower subset.

Selon la variante de la figure 22, la zone médiane de la plaque de renfort 98 présente des ondulations longitudinales telles que les ondulations 98a et 98b qui sont représentées. Ces ondulations contribuent à renforcer la rigidité de la plaque de renfort.According to the variant of the figure 22 the middle zone of the reinforcing plate 98 has longitudinal corrugations such as the corrugations 98a and 98b which are shown. These corrugations contribute to reinforce the rigidity of the reinforcement plate.

Pour ces deux variantes de construction, la plaque de renfort est reliée à l'interface par des chevilles qui traversent la couche de dessus du ski et qui maintiennent la plaque de renfort écartée de la couche de dessus.For these two variants of construction, the reinforcing plate is connected to the interface by pins passing through the top layer of the ski and which maintain the reinforcing plate spaced from the top layer.

Naturellement l'invention n'est pas limitée à la description qui vient d'être faite et d'autres variantes sont encore possibles.Naturally the invention is not limited to the description that has just been made and other variants are still possible.

En particulier les différents modes de réalisation et leurs différentes variantes qui ont été décrites peuvent être combinés entre eux.In particular the different embodiments and their different variants that have been described can be combined with each other.

Egalement la plaque de renfort pourrait être formée par un profilé d'épaisseur variable selon une section transversale.Also the reinforcing plate could be formed by a profile of variable thickness in a cross section.

Egalement l'interface qui est situé au-dessus de la couche de dessus est un mode de réalisation préféré, mais cet interface n'est pas indispensable.Also the interface which is located above the top layer is a preferred embodiment, but this interface is not essential.

Egalement l'invention n'est pas limitée à la fabrication d'un ski, elle peut également s'appliquer à la fabrication d'une planche de glisse telle qu'un surf de neige ou un ski court.Also the invention is not limited to the manufacture of a ski, it can also be applied to the manufacture of a gliding board such as a snowboard or a short ski.

Claims (13)

  1. Process for producing a gliding board comprising a core (9) and upper and lower reinforcing subassemblies (15, 10), the upper reinforcing subassembly (15) comprising a reinforcing plate (17, 38, 40, 49, 60) and a top layer (16, 39, 43, 50) and the core (9) being made from foam injected "in situ" between the reinforcing subassemblies, characterized in that, in a step of the process, the upper subassembly (15) comprising the top layer (16, 39, 43, 50) and the reinforcing plate (17, 38, 40, 49, 60, 79, 88, 95, 96, 98) is prepared, the preparation consisting in connecting, at least locally the reinforcing plate to the external top layer by pins (6a, 6b, 6c, 6d, 22a, 22b, 36a, 36c, 36d, 46a, 46c, 46d, 48a, 48b, 56a, 56c, 56d, 58a, 59a, 71a, 71b, 71c, 71d, 78a, 78b, 90a, 90b, 94a, 94b) that keep the reinforcing plate separate from the top layer and establish spot mechanical links between the reinforcing plate and the top layer, and characterized in that to the front and to the rear of the central portion, the top layer (16, 39, 43, 50) and the reinforcing plate (17, 38, 40, 49, 60, 79, 88, 95, 96, 98) are connected by pin spacers (22a, 22b) fitted to the reinforcing plate by a hooking mechanical link.
  2. Process according to Claim 1, characterized in that the top layer (24) is pierced and in that the pins (6a, 6b, 6c, 6d) are engaged in the holes in the top layer.
  3. Process according to Claim 2, wherein the top layer (24) is a shell shaped in a shaping mould with two jaws (25, 26), characterized in that the holes are made during the forming operation with the aid of punches (26a, 26b) associated with one (26) of the jaws of the mould.
  4. Gliding board comprising a central core (9), upper and lower reinforcing subassemblies (15, 10), the core (9) being made from injected foam and the upper subassembly (15) comprising a reinforcing plate (17, 38, 40, 49, 60, 79, 88, 95, 96, 98) and a top layer (16, 39, 43, 50), characterized in that pins (6a, 6b, 6c, 6d, 22a, 22b, 36a, 36c, 36d, 46a, 46c, 46d, 48a, 48b, 56a, 56c, 56d, 58a, 59a, 71a, 71b, 71c, 71d, 78a, 78b, 90a, 90b, 94a, 94b) mechanically link the top layer (16, 39, 43, 50) and the reinforcing plate (17, 38, 40, 49, 60, 79, 88, 95, 96, 98) over at least a portion of the length of the board.
  5. Board according to Claim 4, characterized in that the pins (6a, 6b, 6c, 6d, 36a, 36c, 36d, 46a, 46c, 46d, 48a, 48b, 56a, 56c, 56d, 58a, 59a, 71a, 71b, 71c, 71d, 78a, 78b, 90a, 90b, 94a, 94b) project from an interface (6, 36, 46, 52, 56, 58, 59, 62, 63, 70, 76, 89, 93) attached to the upper surface of the top layer, (16, 39, 43, 50, 75, 82, 92) in the central portion (4) and have slide ways (7a, 7b) provided in order to interact with complementary slide ways of the retention elements.
  6. Board according to Claim 5, characterized in that the pins (6a, 6b, 6c, 6d, 22a, 22b, 36a, 36c, 36d, 46a, 46c, 46d, 48a, 48b, 56a, 56c, 56d, 58a, 59a, 71a, 71b, 71c, 71d, 78a, 78b, 90a, 90b, 94a, 94b) have, at their lower end, mechanical means for hooking of the reinforcing plate (17, 38, 40, 49, 60, 79, 88, 95, 96, 98).
  7. Board according to Claim 5, characterized in that, to the front and to the rear of the central portion, the top layer (16, 39, 43, 50) and the reinforcing plate (17, 38, 40, 49, 60, 79, 88, 95, 96, 98) are connected by spacers (20, 21) fitted to each of these elements.
  8. Board according to Claim 5, characterized in that, to the front and to the rear of the central portion, the reinforcing plate (38) is fitted to the top layer (39).
  9. Board according to Claim 5, characterized in that the reinforcing plate (40) extends over a limited length of the ski which covers the central portion (4).
  10. Board according to Claim 5, characterized in that the interface (56) comprises a succession of segments connected by bridges.
  11. Board according to Claim 5, characterized in that the interface comprises two parallel rails (58, 59, 62, 63).
  12. Board according to Claim 4, characterized in that the reinforcing layer (96) has, laterally, two wings (96a, 96b) folded upwards or towards the lower subassembly.
  13. Board according to Claim 4, characterized in that the reinforcing layer (98) has, in the median zone thereof, longitudinal undulations (98a, 98b).
EP05025528A 2004-12-07 2005-11-23 Process for a composite glide board with injected core and board obtained by this process Not-in-force EP1669111B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0413023A FR2878756B1 (en) 2004-12-07 2004-12-07 METHOD FOR MANUFACTURING A SLIDING BOARD OF INJECTED COMPOSITE AND INJECTED CORE STRUCTURE AND BOARD OBTAINED BY CARRYING OUT THE PROCESS

Publications (2)

Publication Number Publication Date
EP1669111A1 EP1669111A1 (en) 2006-06-14
EP1669111B1 true EP1669111B1 (en) 2012-04-25

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Application Number Title Priority Date Filing Date
EP05025528A Not-in-force EP1669111B1 (en) 2004-12-07 2005-11-23 Process for a composite glide board with injected core and board obtained by this process

Country Status (3)

Country Link
EP (1) EP1669111B1 (en)
AT (1) ATE554834T1 (en)
FR (1) FR2878756B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2906731B1 (en) * 2006-10-04 2008-11-14 Skis Rossignol Soc Par Actions SLIDING BOARD AND METHOD OF MANUFACTURE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604914B1 (en) * 1986-10-10 1989-10-06 Rossignol Sa SKIS MANUFACTURING PROCESS
DE4319245A1 (en) * 1993-06-09 1994-12-15 Blizzard Gmbh Method for producing a ski, and device for carrying out this method
EP1542776B1 (en) * 2002-09-24 2010-11-03 Tyrolia Technology GmbH Sliding board, especially a ski, and method for producing the same
FR2847483B1 (en) 2002-11-22 2004-12-24 Rossignol Sa SLIDING BOARD AND METHOD FOR MANUFACTURING SUCH A SLIDING BOARD
SI21409A (en) * 2003-01-21 2004-08-31 Elan, D.D. Ski and reinforced ski inet
FR2855066B1 (en) * 2003-05-21 2005-06-24 Rossignol Sa SNOWBOARD BOARD WITH EXTERIOR DECORATION AND PROTECTION ASSEMBLY AND METHOD OF MANUFACTURE

Also Published As

Publication number Publication date
EP1669111A1 (en) 2006-06-14
ATE554834T1 (en) 2012-05-15
FR2878756B1 (en) 2007-02-23
FR2878756A1 (en) 2006-06-09

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