EP0622096A1 - Snowboard - Google Patents

Snowboard Download PDF

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Publication number
EP0622096A1
EP0622096A1 EP94103769A EP94103769A EP0622096A1 EP 0622096 A1 EP0622096 A1 EP 0622096A1 EP 94103769 A EP94103769 A EP 94103769A EP 94103769 A EP94103769 A EP 94103769A EP 0622096 A1 EP0622096 A1 EP 0622096A1
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EP
European Patent Office
Prior art keywords
zone
reinforcement
mounting
along
board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94103769A
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German (de)
French (fr)
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EP0622096B1 (en
Inventor
Dominique Deville
Vincent Forest
Maurice Legrand
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Salomon SAS
Original Assignee
Salomon SAS
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Publication of EP0622096A1 publication Critical patent/EP0622096A1/en
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Publication of EP0622096B1 publication Critical patent/EP0622096B1/en
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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
    • A63C5/03—Mono skis; Snowboards
    • 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
    • A63C5/003—Structure, covering or decoration of the upper ski surface
    • 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
    • A63C5/04—Structure of the surface thereof
    • A63C5/0405—Shape thereof when projected on a plane, e.g. sidecut, camber, rocker
    • A63C5/0411—Shape thereof when projected on a plane, e.g. sidecut, camber, rocker asymmetric

Definitions

  • the invention relates to a board for sliding on snow or on ice, and in particular a board for snowboarding, or snowboarding.
  • Such a board is intended to support the two boots of a skier, which are retained one next to the other by fastening elements.
  • the two shoes are offset along the median longitudinal axis of the board, and they are oriented relative to this axis at an angle varying approximately between 5 and 90 degrees on one side or the other of the longitudinal axis. .
  • this angle is adjustable.
  • Such a sliding device is for example described in American patent n ° 3,900,204.
  • the invention relates more particularly to the structure of the gliding board.
  • the snowboard is stressed and works differently from a traditional ski.
  • the two shoes of the surfer are retained on the board, moreover, they are retained asymmetrically with respect to the board.
  • the board is subjected to stresses greater than those of a normal ski.
  • the surfer has two points of support on the board, and, by a differential action of the two shoes, the surfer acts on the bending or twisting of his board.
  • the surfer has an asymmetrical position relative to the board and relative to the slope. The two side edges of the board are not similarly stressed.
  • the bending and twisting of the board are parameters which influence the handling and handling qualities of snowboard, as well as the geometric shapes of the board, mainly length, width and shape of the dimension lines.
  • the weight and general resistance of the board are also parameters on which the quality of the snowboard depends.
  • One of the aims of the invention is to propose a gliding board for which the construction parameters, in particular the bending and the torsion can be controlled and managed in a precise and independent manner.
  • Another object of the present invention is to provide a board whose different parameters can be determined with greater freedom.
  • Another object of the invention is to propose a board for which the parameters can be controlled and managed differently in different areas of the board, in particular along each of the two lateral edges.
  • the gliding board in particular a snowboard, according to the invention is intended to support the two shoes of a surfer which are retained on the board one next to the other by fastening elements. It includes a slender base structure, in the form of a plate, of which at least the front end is raised to form the spatula, the basic structure having a central zone with two mounting zones for the fastening elements, the mounting zones. fastening being located towards the middle of the width of the central zone and being offset with respect to each other along the median longitudinal direction defined by the basic structure, the basic structure also having a front zone located in front of the central area, and a rear area located behind the central area.
  • It is characterized by the fact that it has at least in one of the front or rear zones a slender reinforcement which extends over only part of the surface of said front or rear zone, from at least the vicinity of the end of the basic structure, up to at least the vicinity of the mounting area for the fastening element located on the side of said front or rear area so as to increase the resistance to torsion and / or bending of a surface of the basic structure covering said front or rear area and at least part of said mounting area.
  • Figure 1 is a general top view of a snowboard equipped with fastening elements.
  • Figure 2 schematically shows, in top view, a gliding board according to a first non-limiting mode of implementation of the invention.
  • FIG. 3 is a cross-sectional view of the board of FIG. 2.
  • Figures 4 and 6 are views similar to Figure 2 which illustrate other embodiments of the invention.
  • FIG. 5 is a cross-sectional view of the board of FIG. 4.
  • FIGS 7, 8, 9, 10, 11 and 12 illustrate alternative embodiments of the invention.
  • Figure 13 is a cross-sectional view of a gliding board, and illustrates the establishment of the reinforcement on the base structure according to a first non-limiting implementation.
  • Figures 14, 15, 16, 17 and 18 illustrate variations in the placement of the reinforcement on the basic structure.
  • FIG. 1 shows, seen from above a snowboard 1 intended for the practice of sliding on snow or ice.
  • the snowboard 1 is equipped in its central zone with retaining elements 2 and 3 for retaining one next to the other the shoes of a surfer.
  • the snowboard 1 comprises a long, basic structure 4 in the form of a plate, the thickness of which is approximately constant.
  • the basic structure shown is symmetrical with respect to a vertical and longitudinal plane, the trace of which is shown diagrammatically by a longitudinal axis 5 in FIG. 1. This is not limiting, and as will be described later, the basic structure can also have an asymmetrical shape.
  • the front end 4a of the basic structure 4 is raised to form the spatula.
  • the rear end 4b is situated substantially in the same plane as the basic structure. This is not limiting, and the rear end can also be spatulated.
  • the basic structure 4 has two lateral edges 6 and 7. These lateral edges have a curved shape according to what is commonly called a dimension line. The curvature of the dimension lines can be more or less pronounced. This is within the reach of the skilled person. Generally, the minimum width of the basic structure is between the retaining elements 2 and 3, and it is close to the length of a shoe, possibly a little narrower.
  • the snowboard 1 has two retaining elements 2 and 3 which are intended to hold the shoes of the surfer in abutment on the basic structure.
  • These retaining elements are of any suitable type and will not be described in detail.
  • they each have a slender plate fitted with two retaining stirrups which grip the shoe by its front and rear tips. This is known to those skilled in the art.
  • the plates of the retaining elements 2 and 3 define the orientation of the shoes of the surfer relative to the longitudinal axis 5 of the base structure 4. These directions of orientation have been shown diagrammatically at 8 for element 2, and 9 for element 3.
  • the orientation of the retaining elements 2 and 3, that is to say directions 8 and 9 relative to the longitudinal axis 5 is adjustable.
  • the two retaining elements 2 and 3 are assembled to the base structure 4 in a central zone 12.
  • the base structure In front of this central zone, the base structure has a front zone 13 which ends in the spatula.
  • the basic structure has a rear zone 14.
  • the retaining elements 2 and 3 are assembled in two mounting zones 15 and 16 of the central zone 12.
  • the mounting zones of the fixing elements have been shown diagrammatically in FIG. 1 in the form of two circles centered at points 17 and 18 located along direction 5, the diameter of which is slightly less than the width of the basic structure at this level.
  • the mounting zones correspond to the surface of the basic structure covered by the retaining elements over their entire adjustment range in longitudinal position and in orientation relative to the longitudinal direction 5.
  • the centers 17 and 18 of the mounting zones are 40 to 50 centimeters apart along the direction 5. This however is not limiting. This distance can also be adjustable. Alignment with direction 5 is also not limiting, and the mounting zones could be offset transversely with respect to this direction 5.
  • the basic structure has a traditional construction, in particular a box type structure or a sandwich type structure, or a combination of these two types of construction.
  • the basic structure is deformed in flexion and torsion in the front zone, in the rear zone, and in the central zone, between the retaining elements.
  • the surfer can act on the bending or twisting of the central area. It is known, for example, that a voluntary torsion of the central zone facilitates the initiation of a turn. Also, bending the central area promotes the effect produced by the surfer's back and forth movement to move the support areas of the board on the snow.
  • a voluntary flexion of the central zone before a jump increases the energy of relaxation which is released during the jump.
  • the gliding board has local reinforcement in at least one of the front or rear areas of the basic structure.
  • the reinforcement extends over only part of the surface of the front and / or rear zone, and / or central from the end or the vicinity of the end of the zone, up to the mounting zone of the element of fixing located on the side of the front or rear area, or the vicinity of this mounting area.
  • the geometry, stiffness and location of the reinforcement are determined so as to increase the torsional or bending stiffness of a surface covering the surface of the front and / or rear area up to at least the element mounting area front and / or rear fixing.
  • the gliding board is produced starting from a basic structure of traditional construction, but appreciably more flexible and lighter than a traditional structure.
  • the basic structure defines the geometric shape of the gliding board, that is to say its length, its width, the shape of its dimension lines, if necessary the relief of its gliding sole.
  • the basic structure is then reinforced by a reinforcement.
  • the stiffness, the geometry and the location of the reinforcement are determined as a function of the desired effect, depending on whether one wishes to reinforce the front area and / or the rear area in torsion and / or bending, and / or the area central of the basic structure. In this way, the geometry of the gliding board and its mechanical stiffness characteristics are made more independent than in traditional constructions.
  • the reinforced surface covers at least in part the mounting areas of the fastening elements, so that the surfer can control, and if necessary control from his shoes the action of the reinforcements on bending and / or the twist of the board.
  • the stiffness of the reinforcement is maximum towards the mounting zone situated on the side of the zone, and it decreases towards the end of the zone.
  • the reinforcement has a relatively weak or zero action, so as not to excessively impede the bending and twisting of the board in this zoned.
  • the reinforcement is made of any suitable material.
  • it consists of a sheet of high performance aluminum alloy of the type which is used in the construction of traditional basic structures. It can also be produced by a composite structure of fibers coated with a thermosetting resin, the fibers being additionally oriented in a defined direction, if necessary. Any other suitable material is also suitable.
  • the stiffness of the reinforcement can be determined by the geometry of its profile, mainly its width and thickness, and by the nature and orientation of the material used.
  • Figure 2 shows schematically a top view of a first implementation of the invention.
  • the gliding board has a reinforcement 20 which extends in the front zone 13, the central zone 12 and the rear zone 14.
  • the reinforcement 20 has in each front or rear zone two branches 21, 22 and 23, 24 which converge from each corner of the front or rear zone towards the longitudinal direction 5, at the level of the central zone 12.
  • the width of the reinforcement 20 is maximum at the level of the mounting zones 15 and 16. From there, the width of the branches decreases towards the ends of the front and rear zones. Between the mounting zones 15 and 16, the width of the reinforcement also has a minimum.
  • FIG. 3 represents a section of the gliding board of FIG. 2 at the border between the zones 12 and 13, in the case where the reinforcement is attached to the upper surface of the base structure 4.
  • This view illustrates the fact that the reinforcement 20 may have a constant thickness, or else, as shown, have a thickness graduated over its width, due for example to the local superposition of different reinforcement layers. The thickness can also vary gradually. In the lengthwise direction, the thickness of the reinforcement can vary in the same way.
  • Such a reinforcement profile acts mainly on the flexion of the front zone and the rear zone which is stiffer.
  • the gliding board retains a certain flexibility in torsion. This flexibility is especially concentrated in the central zone 12.
  • the gliding board therefore has an ease of twisting which favors the initiation of turns.
  • the reinforcement provides the ends of the board with stable support.
  • the board can also have on the front a secondary reinforcement 19 in the shape of a triangle, the point of which is engaged between the branches 21 and 22 of the reinforcement 20.
  • a secondary reinforcement reinforces in bending the spatula of the board.
  • FIG. 4 illustrates another embodiment of the invention.
  • the gliding board has a profiled reinforcement 25 along the length and the width of the board.
  • the reinforcement 25 mainly extends along the lateral edges 6 and 7 of the board.
  • the reinforcement 25 has two branches 28 and 29, 30 and 31 which extend along the lateral edges of the basic structure. Between the mounting zones, the branches 28 and 30, 29 and 31 extend continuously along the lateral edges of the structure 4.
  • the reinforcement 25 has two connections of bridging 26 and 27. Locally in these zones, the reinforcement extends over the entire width of the board.
  • the reinforcement 25 thus has a maximum width towards the front and rear mounting zones 15 and 16.
  • the width of the branches then decreases towards the ends of the front and rear zones. Between the mounting zones 15 and 16, the reinforcement has a relative minimum of width.
  • the thickness of the reinforcement 25 can be constant over its width, or vary gradually, or, as shown in FIG. 5, vary gradually. Such a gradual or graduated thickness variation can also act lengthwise.
  • Such reinforcement mainly reinforces the torsional stiffness of the front, rear and central areas. However, the reinforcement action is relatively weaker between the mounting zones 15 and 16.
  • the reinforcement is mainly active along the lateral edges of the board, in particular it makes the board more stable in driving, and gives it better grip. in turns.
  • Figure 6 illustrates another alternative embodiment of the invention.
  • the gliding board has a profiled reinforcement 32 along the length and the width of the board.
  • the reinforcement 32 extends in the front and rear zones 13 and 14, and in the central zone 12 along the direction longitudinal 5.
  • the reinforcement 32 has in the front zone and in the rear zone a branch, respectively 33 and 34.
  • the branches extend continuously in the central zone 12.
  • the width of the reinforcement 32 is maximum towards the front and rear mounting zones 15 and 16. It decreases towards the ends of the front and rear zones. Between the mounting zones 15 and 16, the width of the reinforcement 32 decreases progressively and has a minimum.
  • the thickness of the reinforcement 32 can be constant, or else vary gradually or graduated over the length and the width of the reinforcement.
  • the reinforcement 32 mainly exerts an action on the bending stiffness of the front and rear zones of the basic structure. Furthermore, the basic structure retains a relatively great flexibility in torsion over its entire length.
  • FIG. 7 illustrates a variant implementation of the invention.
  • the reinforcement 36 consists of two front and rear parts 37 and 38.
  • the front and rear parts 37 and 38 extend in two converging branches from the corners of the front and rear zones towards direction 5.
  • FIG. 7 shows that the parts 37 and 38 of the reinforcement extend as far as the central zone, and that they have a zone of intersection with the front and rear mounting zones 15 and 16.
  • this reinforcement has a shape of the same type as that described in relation to FIG. 2.
  • the reinforcement 36 has a discontinuity zone between the mounting zones 15 and 16.
  • the board With respect to the gliding board shown in FIG. 2 , in this case, the board has increased flexibility in its central area 12, more particularly between the shoe retaining elements.
  • FIG. 8 represents another variant implementation of the invention.
  • the gliding board has a reinforcement 40 in two parts 41 and 42 which extend respectively along the two lateral edges of the board.
  • the reinforcement 40 has geometrical characteristics close to those described in relation to FIG. 4, with however a discontinuity along the longitudinal direction 5.
  • FIG. 9 presents another variant according to which, in addition to a longitudinal discontinuity, the reinforcement 44 has a transverse discontinuity between the mounting zones 15 and 16.
  • the reinforcement 44 comprises four branches 45 to 48 which mainly extend the along the side edges of the gliding board in the front and rear areas.
  • the reinforcement 44 has a maximum width towards the mounting zones 15 and 16. This width decreases towards the front and rear ends of the board.
  • FIG. 10 illustrates another variant embodiment of the invention according to which the reinforcement generally has a greater width or stiffness on one side of the direction 5.
  • FIG. 10 presents a reinforcement 51 of the same nature as the reinforcement 40 described in FIG. 8.
  • the reinforcement 51 has two parts 49 and 50 situated along the lateral edges of the board, on either side of the longitudinal direction 5.
  • the part 49 along the edge 6 generally has a greater width and therefore a stiffness greater than that of the part 50 along the edge 7. This asymmetry reinforces the stiffness of a lateral edge compared to the other, and takes account for example of the asymmetrical position of the surfer on his board.
  • FIG. 11 represents another variant embodiment of the invention according to which the basic structure 54 has an asymmetrical shape which is adapted to the asymmetrical position of the surfer on his board.
  • This asymmetry corresponds to one of the two positions usually known under the names "goofy” or "regular". In known manner, it can play in the shape of the front and rear ends as well as in the shape and the relative position of the dimension lines.
  • the structure 54 has a median longitudinal direction 55.
  • FIG. 11 shows a reinforcement 56 of the same nature as the preceding reinforcement 51, the two parts 57 and 58 of which have proportions and positions in relation to the asymmetry of the structure 54.
  • the board shown in FIG. 10 has an edge lateral 59 offset forwards with respect to edge 60.
  • part 57 of the reinforcement is offset forwards with respect to part 58.
  • the shape and stiffness of the reinforcement can also be different on the two parts 57 and 58, in relation to the asymmetry of the basic structure 54.
  • the width of the reinforcement 56 is maximum towards the mounting areas of the fasteners 65 and 66, and gradually decreases towards the ends of the front and rear areas.
  • FIG. 12 illustrates another variant, according to which the gliding board has a reinforcement 67 in two parts 68 and 69 situated on either side of the median longitudinal direction 5.
  • the width of the parts 68 and 69 increases from each of the ends front and rear zones, and it has local fluctuations in the center, in particular at the level of the mounting zones 15 and 16. Such local fluctuations can also be present on the thickness of the reinforcement.
  • FIG. 13 illustrates a first mode of construction of the gliding board.
  • the basic structure 4 has a traditional construction, for example a box-type structure with a central core 70, wrapped on top and on the sides by a reinforcing layer 71.
  • the structure In its lower part, the structure has a lower reinforcement layer 72 situated between the two lateral edges 74 and 75, and under layer 72 a sole layer 73.
  • the structure is coated in its upper part with a decoration layer 75.
  • the reinforcement 76 is attached to the upper surface of the base structure 4, that is to say above the decor layer.
  • the reinforcement is assembled by any means appropriate to its nature, in particular bonding, welding, mechanical assembly.
  • FIG. 14 illustrates a variant, according to which the reinforcement 78 is assembled to the upper surface of the upper reinforcement layer 79, and the assembly is covered by the decor layer 80. Between the branches of the reinforcement 78, the decor layer is flush with the upper surface of the upper reinforcement layer.
  • FIG. 15 illustrates another variant according to which the space 83 between the arms 81 and 82 of the reinforcement is filled with a filling material with low modulus, that is to say which has a negligible influence on the stiffness of the together. The whole is covered by the decor layer.
  • FIG. 16 represents another variant according to which a layer of deformable material 86 is interposed between the reinforcement 85 and the base structure.
  • This material has, for example, visco-elastic type damping characteristics. Also, it may be a material which has the ability to deform when stretched or sheared by absorbing energy. Such a material is known to a person skilled in the art, for example rubber.
  • the decor layer 84 covers the basic structure, including the reinforcement 85.
  • FIG. 17 represents a variant of the same type, with the difference that the reinforcement 87 and the deformable layer 88 are assembled on the upper surface of the decor layer 89.
  • FIG. 18 illustrates another variant according to which the reinforcement 90 extends at least locally along the sides of the basic structure, up to the lateral edges.
  • the reinforcement 90 extends at least locally along the sides of the basic structure, up to the lateral edges.
  • it has at least locally extensions 91 which cover the sides 92 of the base structure up to the lateral edges 93, 94.
  • a decorative layer 95 covers the assembly. This is not limiting, and as in the case of FIGS. 13 and 17, the reinforcement could be added above the decor layer.
  • the reinforcement can be integrated within the basic structure itself, or at its sliding surface.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

The invention relates to a gliding (sliding) board, in particular a snowboard, which is intended to support both boots of a skier. The board comprises a base structure (4), at least the front end of which is raised to form the tip. It also has a central zone (12) with two zones (15), (16) for mounting the bindings, a front zone (13) and a rear zone (14). It is characterised in that it has, at least in one of the front or rear zones (13), (14), a longitudinal reinforcement (20) which is profiled along the length and the width of the said zone. The reinforcement extends from the vicinity of the end of the front or rear zone (13), (14) up to at least the vicinity of the mounting zone (16), (15) located close to the zone. <IMAGE>

Description

L'invention concerne une planche de glisse sur neige ou sur glace, et notamment une planche de snowboard, ou surf des neiges.The invention relates to a board for sliding on snow or on ice, and in particular a board for snowboarding, or snowboarding.

Une telle planche est destinée à supporter les deux chaussures d'un skieur, qui sont retenues l'une à côté de l'autre par des éléments de fixation. Généralement, les deux chaussures sont décalées suivant l'axe longitudinal médian de la planche, et elles sont orientées par rapport à cet axe selon un angle variant approximativement entre 5 et 90 degrés d'un côté ou de l'autre de l'axe longitudinal. Habituellement, cet angle est réglable. Un tel engin de glisse est par exemple décrit dans le brevet américain n° 3 900 204.Such a board is intended to support the two boots of a skier, which are retained one next to the other by fastening elements. Generally, the two shoes are offset along the median longitudinal axis of the board, and they are oriented relative to this axis at an angle varying approximately between 5 and 90 degrees on one side or the other of the longitudinal axis. . Usually this angle is adjustable. Such a sliding device is for example described in American patent n ° 3,900,204.

L'invention concerne plus particulièrement la structure de la planche de glisse.The invention relates more particularly to the structure of the gliding board.

On sait actuellement réaliser de telles planches en mettant en oeuvre des techniques de construction issues du ski traditionnel. Ainsi, il existe des planches de surf de neige construites selon une structure en sandwich ou une structure en caisson.We currently know how to make such boards using construction techniques from traditional skiing. Thus, there are snowboards built with a sandwich structure or a box structure.

Toutefois, au cours de la glisse, la planche de surf de neige est sollicitée et travaille de façon différente d'un ski traditionnel. En effet, les deux chaussures du surfeur sont retenues sur la planche, de plus, elles sont retenues de façon dissymétrique par rapport à la planche. Globalement, au cours de la glisse, la planche est soumise à des sollicitations supérieures à celles d'un ski normal. Le surfeur a deux points d'appuis sur la planche, et, par une action différentielle des deux chaussures, le surfeur agit sur la flexion ou la torsion de sa planche. Enfin, le surfeur a une position dissymétrique par rapport à la planche et par rapport à la pente. Les deux bords latéraux de la planche ne sont pas sollicités de façon semblable.However, during the gliding, the snowboard is stressed and works differently from a traditional ski. Indeed, the two shoes of the surfer are retained on the board, moreover, they are retained asymmetrically with respect to the board. Overall, during gliding, the board is subjected to stresses greater than those of a normal ski. The surfer has two points of support on the board, and, by a differential action of the two shoes, the surfer acts on the bending or twisting of his board. Finally, the surfer has an asymmetrical position relative to the board and relative to the slope. The two side edges of the board are not similarly stressed.

La flexion et la torsion de la planche sont des paramètres qui influencent les qualités de maniabilité ou de conduite du surf de neige, de même que les formes géométriques de la planche, principalement longueur, largeur et forme des lignes de cotes.The bending and twisting of the board are parameters which influence the handling and handling qualities of snowboard, as well as the geometric shapes of the board, mainly length, width and shape of the dimension lines.

Le poids et la résistance générale de la planche sont aussi des paramètres dont dépend la qualité du surf de neige.The weight and general resistance of the board are also parameters on which the quality of the snowboard depends.

Pour une planche construite de façon traditionnelle, il est très difficile de maîtriser chacun de ces paramètres pour obtenir les qualités voulues de glisse, de maniabilité ou de conduite. En effet les paramètres sont liés entre eux, si bien que, la variation d'un paramètre modifie indirectement les autres paramètres de la planche. Le plus souvent, on adopte un compromis.For a board built in the traditional way, it is very difficult to master each of these parameters to obtain the desired qualities of gliding, maneuverability or driving. Indeed, the parameters are linked together, so that the variation of a parameter indirectly modifies the other parameters of the board. Most often, we adopt a compromise.

Un des buts de l'invention est de proposer une planche de glisse pour laquelle les paramètres de construction, en particulier la flexion et la torsion peuvent être contrôlés et gérés de façon précise et indépendante.One of the aims of the invention is to propose a gliding board for which the construction parameters, in particular the bending and the torsion can be controlled and managed in a precise and independent manner.

Un autre but de la présente invention est de proposer une planche dont les différents paramètres peuvent être déterminés avec une plus grande liberté.Another object of the present invention is to provide a board whose different parameters can be determined with greater freedom.

Un autre but de l'invention est de proposer une planche pour laquelle les paramètres peuvent être contrôlés et gérés de façon différente dans différentes zones de la planche, en particulier le long de chacun des deux bords latéraux.Another object of the invention is to propose a board for which the parameters can be controlled and managed differently in different areas of the board, in particular along each of the two lateral edges.

D'autres buts et avantages de l'invention apparaîtront au cours de la description qui va suivre, cette description étant donnée toutefois à titre indicatif et non limitatif.Other objects and advantages of the invention will emerge during the description which follows, this description being given, however, by way of non-limiting indication.

La planche de glisse, notamment planche de surf de neige, selon l'invention est destinée à supporter les deux chaussures d'un surfeur qui sont retenues sur la planche l'une à coté de l'autre par des éléments de fixation. Elle comprend une structure de base longiligne, en forme de plaque, dont au moins l'extrémité avant est relevée pour former la spatule, la structure de base présentant une zone centrale avec deux zones de montage pour les éléments de fixation, les zones de montage de fixation étant situées vers le milieu de la largeur de la zone centrale et étant décalées l'une par rapport à l'autre le long de la direction longitudinale médiane définie par la structure de base, la structure de base présentant par ailleurs une zone avant située en avant de la zone centrale, et une zone arrière située en arrière de la zone centrale.The gliding board, in particular a snowboard, according to the invention is intended to support the two shoes of a surfer which are retained on the board one next to the other by fastening elements. It includes a slender base structure, in the form of a plate, of which at least the front end is raised to form the spatula, the basic structure having a central zone with two mounting zones for the fastening elements, the mounting zones. fastening being located towards the middle of the width of the central zone and being offset with respect to each other along the median longitudinal direction defined by the basic structure, the basic structure also having a front zone located in front of the central area, and a rear area located behind the central area.

Elle est caractérisée par le fait qu'elle présente au moins dans l'une des zones avant ou arrière un renfort longiligne qui s'étend sur une partie seulement de la surface de ladite zone avant ou arrière, depuis au moins le voisinage de l'extrémité de la structure de base, jusque au moins le voisinage de la zone de montage pour l'élément de fixation situé du côté de ladite zone avant ou arrière de façon à augmenter la résistance à la torsion et/ou à la flexion d'une surface de la structure de base couvrant ladite zone avant ou arrière et une partie au moins de ladite zone de montage.It is characterized by the fact that it has at least in one of the front or rear zones a slender reinforcement which extends over only part of the surface of said front or rear zone, from at least the vicinity of the end of the basic structure, up to at least the vicinity of the mounting area for the fastening element located on the side of said front or rear area so as to increase the resistance to torsion and / or bending of a surface of the basic structure covering said front or rear area and at least part of said mounting area.

L'invention sera mieux comprise en se référant à la description ci-dessous, ainsi qu'aux dessins en annexe qui en font partie intégrante.The invention will be better understood by referring to the description below, as well as to the accompanying drawings which form an integral part thereof.

La figure 1 est une vue générale de dessus d'un snowboard équipé d'éléments de fixation.Figure 1 is a general top view of a snowboard equipped with fastening elements.

La figure 2 représente de façon schématique, en vue de dessus, une planche de glisse selon un premier mode non limitatif de mise en oeuvre de l'invention.Figure 2 schematically shows, in top view, a gliding board according to a first non-limiting mode of implementation of the invention.

La figure 3 est une vue en coupe transversale de la planche de la figure 2.FIG. 3 is a cross-sectional view of the board of FIG. 2.

Les figures 4 et 6 sont des vues semblables à la figure 2 qui illustrent d'autres modes de mise en oeuvre de l'invention.Figures 4 and 6 are views similar to Figure 2 which illustrate other embodiments of the invention.

La figure 5 est une vue en coupe transversale de la planche de la figure 4.FIG. 5 is a cross-sectional view of the board of FIG. 4.

Les figures 7, 8, 9, 10, 11 et 12 illustrent des variantes de mise en oeuvre de l'invention.Figures 7, 8, 9, 10, 11 and 12 illustrate alternative embodiments of the invention.

La figure 13 est une vue en coupe transversale d'une planche de glisse, et illustre la mise en place du renfort sur la structure de base selon une première mise en oeuvre non limitative.Figure 13 is a cross-sectional view of a gliding board, and illustrates the establishment of the reinforcement on the base structure according to a first non-limiting implementation.

Les figures 14, 15, 16, 17 et 18 illustrent des variantes de mise en place du renfort sur la structure de base.Figures 14, 15, 16, 17 and 18 illustrate variations in the placement of the reinforcement on the basic structure.

La figure 1 représente, vu de dessus un surf de neige 1 destiné à la pratique de la glisse sur de la neige ou de la glace. Le surf de neige 1 est équipé dans sa zone centrale d'éléments de retenue 2 et 3 pour retenir l'une à coté de l'autre les chaussures d'un surfeur.Figure 1 shows, seen from above a snowboard 1 intended for the practice of sliding on snow or ice. The snowboard 1 is equipped in its central zone with retaining elements 2 and 3 for retaining one next to the other the shoes of a surfer.

Le surf de neige 1 comprend une structure de base longiligne 4 en forme de plaque dont l'épaisseur est approximativement constante. La structure de base représentée est symétrique par rapport à un plan vertical et longitudinal dont la trace est schématisée par un axe longitudinal 5 dans la figure 1. Ceci n'est pas limitatif, et comme cela sera décrit ultérieurement, la structure de base peut aussi avoir une forme dissymétrique.The snowboard 1 comprises a long, basic structure 4 in the form of a plate, the thickness of which is approximately constant. The basic structure shown is symmetrical with respect to a vertical and longitudinal plane, the trace of which is shown diagrammatically by a longitudinal axis 5 in FIG. 1. This is not limiting, and as will be described later, the basic structure can also have an asymmetrical shape.

L'extrémité avant 4a de la structure de base 4 est relevée pour former la spatule. Dans l'exemple représenté, l'extrémité arrière 4b se situe sensiblement dans le même plan que la structure de base. Ceci n'est pas limitatif, et l'extrémité arrière peut aussi être spatulée.The front end 4a of the basic structure 4 is raised to form the spatula. In the example shown, the rear end 4b is situated substantially in the same plane as the basic structure. This is not limiting, and the rear end can also be spatulated.

Latéralement, la structure de base 4 présente deux bords latéraux 6 et 7. Ces bords latéraux présentent une forme incurvée selon ce qui est appelé de façon courante une ligne de cotes. La courbure des lignes de cotes peut être plus ou moins prononcée. Ceci est à la portée de l'homme du métier. Généralement, la largeur minimale de la structure de base se situe entre les éléments de retenue 2 et 3, et elle est voisine de la longueur d'une chaussure, éventuellement un peu moins large.Laterally, the basic structure 4 has two lateral edges 6 and 7. These lateral edges have a curved shape according to what is commonly called a dimension line. The curvature of the dimension lines can be more or less pronounced. This is within the reach of the skilled person. Generally, the minimum width of the basic structure is between the retaining elements 2 and 3, and it is close to the length of a shoe, possibly a little narrower.

Le long de l'axe longitudinal, le surf de neige 1 présente deux éléments de retenue 2 et 3 qui sont destinés à retenir les chaussures du surfeur en appui sur la structure de base. Ces éléments de retenue sont de tout type approprié et ils ne seront pas décrits en détail. Par exemple, ils présentent chacun une plaque longiligne équipée de deux étriers de retenue qui saisissent la chaussure par ses embouts avant et arrière. Ceci est connu de l'homme du métier.Along the longitudinal axis, the snowboard 1 has two retaining elements 2 and 3 which are intended to hold the shoes of the surfer in abutment on the basic structure. These retaining elements are of any suitable type and will not be described in detail. For example, they each have a slender plate fitted with two retaining stirrups which grip the shoe by its front and rear tips. This is known to those skilled in the art.

Les plaques des éléments de retenue 2 et 3 définissent l'orientation des chaussures du surfeur par rapport à l'axe longitudinal 5 de la structure de base 4. Ces directions d'orientation ont été schématisées en 8 pour l'élément 2, et 9 pour l'élément 3. De préférence, tel que cela est connu, l'orientation des éléments de retenue 2 et 3, c'est-à-dire des directions 8 et 9 par rapport à l'axe longitudinal 5 est réglable.The plates of the retaining elements 2 and 3 define the orientation of the shoes of the surfer relative to the longitudinal axis 5 of the base structure 4. These directions of orientation have been shown diagrammatically at 8 for element 2, and 9 for element 3. Preferably, as is known, the orientation of the retaining elements 2 and 3, that is to say directions 8 and 9 relative to the longitudinal axis 5 is adjustable.

Les deux éléments de retenue 2 et 3 sont assemblés à la structure de base 4 dans une zone centrale 12. En avant de cette zone centrale, la structure de base présente une zone avant 13 qui se termine par la spatule. En arrière, la structure de base présente une zone arrière 14.The two retaining elements 2 and 3 are assembled to the base structure 4 in a central zone 12. In front of this central zone, the base structure has a front zone 13 which ends in the spatula. At the rear, the basic structure has a rear zone 14.

Les éléments de retenue 2 et 3 sont assemblés dans deux zones de montage 15 et 16 de la zone centrale 12. Les zones de montage des éléments de fixation ont été schématisés dans la figure 1 sous la forme de deux cercles centrés en des points 17 et 18 situés le long de la direction 5, dont le diamètre est légèrement inférieur à la largeur de la structure de base à ce niveau. En fait, les zones de montage correspondent à la surface de la structure de base couverte par les éléments de retenue sur toute leur plage de réglage en position longitudinale et en orientation par rapport à la direction longitudinale 5.The retaining elements 2 and 3 are assembled in two mounting zones 15 and 16 of the central zone 12. The mounting zones of the fixing elements have been shown diagrammatically in FIG. 1 in the form of two circles centered at points 17 and 18 located along direction 5, the diameter of which is slightly less than the width of the basic structure at this level. In fact, the mounting zones correspond to the surface of the basic structure covered by the retaining elements over their entire adjustment range in longitudinal position and in orientation relative to the longitudinal direction 5.

Habituellement, les centres 17 et 18 des zones de montage sont distants de 40 à 50 centimètres le long de la direction 5. Ceci toutefois n'est pas limitatif. Cette distance peut être aussi réglable. L'alignement sur la direction 5 n'est pas non plus limitatif, et les zones de montage pourraient être décalées transversalement par rapport à cette direction 5.Usually, the centers 17 and 18 of the mounting zones are 40 to 50 centimeters apart along the direction 5. This however is not limiting. This distance can also be adjustable. Alignment with direction 5 is also not limiting, and the mounting zones could be offset transversely with respect to this direction 5.

La structure de base présente une construction traditionnelle, notamment une structure de type caisson ou une structure de type sandwich, ou une association de ces deux types de construction.The basic structure has a traditional construction, in particular a box type structure or a sandwich type structure, or a combination of these two types of construction.

Au cours de la glisse, la structure de base se déforme en flexion et en torsion dans la zone avant, dans la zone arrière, et dans la zone centrale, entre les éléments de retenue. En outre, par une action différentielle des chaussures, c'est-à-dire en jouant sur des appuis de nature différente sur ses deux pieds, le surfeur peut agir sur la flexion ou la torsion de la zone centrale. Il est connu par exemple qu'une torsion volontaire de la zone centrale facilite le déclenchement d'un virage. Egalement, une flexion de la zone centrale favorise l'effet que produit le mouvement d'avant en arrière du surfeur pour déplacer les zones d'appui de la planche sur la neige. De plus, une flexion volontaire de la zone centrale avant un saut augmente l'énergie de détente qui est libérée au cours du saut.During sliding, the basic structure is deformed in flexion and torsion in the front zone, in the rear zone, and in the central zone, between the retaining elements. In addition, by a differential action of the shoes, that is to say by playing on supports of a different nature on his two feet, the surfer can act on the bending or twisting of the central area. It is known, for example, that a voluntary torsion of the central zone facilitates the initiation of a turn. Also, bending the central area promotes the effect produced by the surfer's back and forth movement to move the support areas of the board on the snow. In addition, a voluntary flexion of the central zone before a jump increases the energy of relaxation which is released during the jump.

Selon l'invention, la planche de glisse présente dans au moins l'une des zones avant ou arrière de la structure de base un renfort local. Le renfort s'étend sur une partie seulement de la surface de la zone avant et/ou arrière, et/ou centrale depuis l'extrémité ou le voisinage de l'extrémité de la zone, jusque la zone de montage de l'élément de fixation situé du côté de la zone avant ou arrière, ou le voisinage de cette zone de montage. La géométrie, la raideur et l'emplacement du renfort sont déterminées de façon à augmenter la raideur en torsion ou en flexion d'une surface couvrant la surface de la zone avant et/ou arrière jusque au moins la zone de montage de l'élément de fixation avant et/ou arrière.According to the invention, the gliding board has local reinforcement in at least one of the front or rear areas of the basic structure. The reinforcement extends over only part of the surface of the front and / or rear zone, and / or central from the end or the vicinity of the end of the zone, up to the mounting zone of the element of fixing located on the side of the front or rear area, or the vicinity of this mounting area. The geometry, stiffness and location of the reinforcement are determined so as to increase the torsional or bending stiffness of a surface covering the surface of the front and / or rear area up to at least the element mounting area front and / or rear fixing.

Ainsi, la planche de glisse est réalisée en partant d'une structure de base de construction traditionnelle, mais sensiblement plus souple et plus légère qu'une structure traditionnelle. La structure de base définit la forme géométrique de la planche de glisse, c'est-à-dire sa longueur, sa largeur, la forme de ses lignes de cotes, le cas échéant le relief de sa semelle de glisse.Thus, the gliding board is produced starting from a basic structure of traditional construction, but appreciably more flexible and lighter than a traditional structure. The basic structure defines the geometric shape of the gliding board, that is to say its length, its width, the shape of its dimension lines, if necessary the relief of its gliding sole.

La structure de base est ensuite renforcée par un renfort. La raideur, la géométrie et l'emplacement du renfort sont déterminés en fonction de l'effet recherché, selon que l'on veut renforcer en torsion et/ou en flexion la zone avant et/ou la zone arrière, et/ou la zone centrale de la structure de base. De cette façon, la géométrie de la planche de glisse et ses caractéristiques mécaniques de raideur sont rendues plus indépendantes que dans les constructions traditionnelles.The basic structure is then reinforced by a reinforcement. The stiffness, the geometry and the location of the reinforcement are determined as a function of the desired effect, depending on whether one wishes to reinforce the front area and / or the rear area in torsion and / or bending, and / or the area central of the basic structure. In this way, the geometry of the gliding board and its mechanical stiffness characteristics are made more independent than in traditional constructions.

Il est important selon l'invention que la surface renforcée couvre au moins en partie les zones de montage des éléments de fixation, pour que le surfeur puisse contrôler, et le cas échéant piloter depuis ses chaussures l'action des renforts sur la flexion et/ou la torsion de la planche.It is important according to the invention that the reinforced surface covers at least in part the mounting areas of the fastening elements, so that the surfer can control, and if necessary control from his shoes the action of the reinforcements on bending and / or the twist of the board.

De préférence, la raideur du renfort est maximale vers la zone de montage située du côté de la zone, et elle décroît vers l'extrémité de la zone.Preferably, the stiffness of the reinforcement is maximum towards the mounting zone situated on the side of the zone, and it decreases towards the end of the zone.

De préférence aussi, entre les éléments de retenue, c'est-à-dire entre les zones de montage, le renfort a une action relativement plus faible ou nulle, pour ne pas entraver outre mesure la flexion et la torsion de la planche dans cette zone.Also preferably, between the retaining elements, that is to say between the mounting zones, the reinforcement has a relatively weak or zero action, so as not to excessively impede the bending and twisting of the board in this zoned.

Le renfort est réalisé en tout matériau approprié. Par exemple, il consiste en une feuille d'alliage d'aluminium à hautes performances du type qui est utilisé dans la construction des structures de base traditionnelles. Il peut également être réalisé par une structure composite de fibres enduites d'une résine thermodurcissable, les fibres étant en plus orientées selon une direction définie, le cas échéant. Tout autre matériau approprié convient aussi.The reinforcement is made of any suitable material. For example, it consists of a sheet of high performance aluminum alloy of the type which is used in the construction of traditional basic structures. It can also be produced by a composite structure of fibers coated with a thermosetting resin, the fibers being additionally oriented in a defined direction, if necessary. Any other suitable material is also suitable.

La raideur du renfort peut être déterminée par la géométrie de son profil, principalement sa largeur et son épaisseur, et par la nature et l'orientation du matériau utilisé.The stiffness of the reinforcement can be determined by the geometry of its profile, mainly its width and thickness, and by the nature and orientation of the material used.

La figure 2 schématise en vue de dessus une première mise en oeuvre de l'invention. Selon cette mise en oeuvre, la planche de glisse présente un renfort 20 qui s'étend dans la zone avant 13, la zone centrale 12 et la zone arrière 14. Le renfort 20 présente dans chaque zone avant ou arrière deux branches 21, 22 et 23, 24 qui convergent depuis chaque coin de la zone avant ou arrière vers la direction longitudinale 5, au niveau de la zone centrale 12.Figure 2 shows schematically a top view of a first implementation of the invention. According to this implementation, the gliding board has a reinforcement 20 which extends in the front zone 13, the central zone 12 and the rear zone 14. The reinforcement 20 has in each front or rear zone two branches 21, 22 and 23, 24 which converge from each corner of the front or rear zone towards the longitudinal direction 5, at the level of the central zone 12.

Ainsi que cela est visible dans la figure 2, la largeur du renfort 20 est maximale au niveau des zones de montage 15 et 16. Partant de là, la largeur des branches décroît en direction des extrémités des zones avant et arrière. Entre les zones de montage 15 et 16, la largeur du renfort présente aussi un minimum.As can be seen in FIG. 2, the width of the reinforcement 20 is maximum at the level of the mounting zones 15 and 16. From there, the width of the branches decreases towards the ends of the front and rear zones. Between the mounting zones 15 and 16, the width of the reinforcement also has a minimum.

La figure 3 représente une coupe de la planche de glisse de la figure 2 au niveau de la frontière entre les zones 12 et 13, dans le cas où le renfort est rapporté à la surface supérieure de la structure de base 4. Cette vue illustre le fait que le renfort 20 peut avoir une épaisseur constante, ou bien, tel que cela est représenté avoir une épaisseur graduée sur sa largeur, du fait par exemple de la superposition locale de différentes couches de renfort. L'épaisseur peut aussi varier de façon progressive. Dans le sens de la longueur, l'épaisseur du renfort peut varier de la même façon.FIG. 3 represents a section of the gliding board of FIG. 2 at the border between the zones 12 and 13, in the case where the reinforcement is attached to the upper surface of the base structure 4. This view illustrates the fact that the reinforcement 20 may have a constant thickness, or else, as shown, have a thickness graduated over its width, due for example to the local superposition of different reinforcement layers. The thickness can also vary gradually. In the lengthwise direction, the thickness of the reinforcement can vary in the same way.

Un tel profil de renfort agit principalement sur la flexion de la zone avant et de la zone arrière qui est plus raide. D'un autre côté, la planche de glisse garde une certaine souplesse en torsion. Cette souplesse est surtout concentrée dans la zone centrale 12. La planche de glisse présente donc une facilité de vrillage qui favorise le déclenchement des virages. D'un autre coté, le renfort fournit aux extrémités de la planche un appui stable.Such a reinforcement profile acts mainly on the flexion of the front zone and the rear zone which is stiffer. On the other hand, the gliding board retains a certain flexibility in torsion. This flexibility is especially concentrated in the central zone 12. The gliding board therefore has an ease of twisting which favors the initiation of turns. On the other hand, the reinforcement provides the ends of the board with stable support.

Eventuellement, la planche peut aussi présenter sur l'avant un renfort secondaire 19 en forme de triangle, dont la pointe est engagée entre les branches 21 et 22 du renfort 20. Un tel renfort secondaire renforce en flexion la spatule de la planche.Optionally, the board can also have on the front a secondary reinforcement 19 in the shape of a triangle, the point of which is engaged between the branches 21 and 22 of the reinforcement 20. Such a secondary reinforcement reinforces in bending the spatula of the board.

La figure 4 illustre un autre mode de mise en oeuvre de l'invention. Selon cette variante, la planche de glisse présente un renfort 25 profilé suivant la longueur et la largeur de la planche. Le renfort 25 s'étend principalement le long des bords latéraux 6 et 7 de la planche. En particulier dans la zone avant 13 et dans la zone arrière 14, le renfort 25 présente deux branches 28 et 29, 30 et 31 qui s'étendent le long des bords latéraux de la structure de base. Entre les zones de montage, les branches 28 et 30, 29 et 31 se prolongent de façon continue le long des bords latéraux de la structure 4. Au niveau des zones de montage avant et arrière 16 et 15, le renfort 25 présente deux liaisons de pontage 26 et 27. Localement dans ces zones, le renfort s'étend sur toute la largeur de la planche.FIG. 4 illustrates another embodiment of the invention. According to this variant, the gliding board has a profiled reinforcement 25 along the length and the width of the board. The reinforcement 25 mainly extends along the lateral edges 6 and 7 of the board. In particular in the front zone 13 and in the rear zone 14, the reinforcement 25 has two branches 28 and 29, 30 and 31 which extend along the lateral edges of the basic structure. Between the mounting zones, the branches 28 and 30, 29 and 31 extend continuously along the lateral edges of the structure 4. At the front and rear mounting zones 16 and 15, the reinforcement 25 has two connections of bridging 26 and 27. Locally in these zones, the reinforcement extends over the entire width of the board.

Le renfort 25 présente ainsi une largeur maximale vers les zones de montage avant et arrière 15 et 16. La largeur des branches décroît ensuite vers les extrémités des zones avant et arrière. Entre les zones de montage 15 et 16, le renfort présente un minimum relatif de largeur.The reinforcement 25 thus has a maximum width towards the front and rear mounting zones 15 and 16. The width of the branches then decreases towards the ends of the front and rear zones. Between the mounting zones 15 and 16, the reinforcement has a relative minimum of width.

L'épaisseur du renfort 25 peut être constante sur sa largeur, ou bien varier de façon progressive, ou bien, comme le représente la figure 5 varier de façon graduée. Une telle variation d'épaisseur progressive ou graduée peut aussi jouer dans le sens de la longueur.The thickness of the reinforcement 25 can be constant over its width, or vary gradually, or, as shown in FIG. 5, vary gradually. Such a gradual or graduated thickness variation can also act lengthwise.

Un tel renfort renforce principalement la raideur en torsion des zones avant, arrière, et de la zone centrale. Toutefois, l'action de renforcement est relativement plus faible entre les zones de montage 15 et 16. Le renfort est principalement actif le long des bords latéraux de la planche, il rend notamment la planche plus stable en conduite, et lui donne une meilleure accroche dans les virages.Such reinforcement mainly reinforces the torsional stiffness of the front, rear and central areas. However, the reinforcement action is relatively weaker between the mounting zones 15 and 16. The reinforcement is mainly active along the lateral edges of the board, in particular it makes the board more stable in driving, and gives it better grip. in turns.

La figure 6 illustre une autre variante de réalisation de l'invention. Selon cette variante, la planche de glisse présente un renfort 32 profilé suivant la longueur et la largeur de la planche. Le renfort 32 s'étend dans les zones avant et arrière 13 et 14, et dans la zone centrale 12 le long de la direction longitudinale 5. Ainsi que cela est représenté dans la figure, le renfort 32 présente dans la zone avant et dans la zone arrière une branche, respectivement 33 et 34. Les branches se prolongent de façon continue dans la zone centrale 12. La largeur du renfort 32 est maximale vers les zones de montage avant et arrière 15 et 16. Elle décroît vers les extrémités des zones avant et arrière. Entre les zones de montage 15 et 16, la largeur du renfort 32 décroît de façon progressive et présente un minimum.Figure 6 illustrates another alternative embodiment of the invention. According to this variant, the gliding board has a profiled reinforcement 32 along the length and the width of the board. The reinforcement 32 extends in the front and rear zones 13 and 14, and in the central zone 12 along the direction longitudinal 5. As shown in the figure, the reinforcement 32 has in the front zone and in the rear zone a branch, respectively 33 and 34. The branches extend continuously in the central zone 12. The width of the reinforcement 32 is maximum towards the front and rear mounting zones 15 and 16. It decreases towards the ends of the front and rear zones. Between the mounting zones 15 and 16, the width of the reinforcement 32 decreases progressively and has a minimum.

Comme dans les cas précédents, l'épaisseur du renfort 32 peut être constante, ou bien varier de façon progressive ou graduée sur la longueur et la largeur du renfort.As in the previous cases, the thickness of the reinforcement 32 can be constant, or else vary gradually or graduated over the length and the width of the reinforcement.

Le renfort 32 exerce principalement une action sur la raideur en flexion des zones avant et arrière de la structure de base. Par ailleurs, la structure de base conserve une souplesse relativement grande en torsion sur toute sa longueur.The reinforcement 32 mainly exerts an action on the bending stiffness of the front and rear zones of the basic structure. Furthermore, the basic structure retains a relatively great flexibility in torsion over its entire length.

La figure 7 illustre une variante de mise en oeuvre de l'invention. Selon cette figure, le renfort 36 est constitué de deux parties avant et arrière 37 et 38.FIG. 7 illustrates a variant implementation of the invention. According to this figure, the reinforcement 36 consists of two front and rear parts 37 and 38.

Les parties avant et arrière 37 et 38 s'étendent selon deux branches convergentes depuis les coins des zones avant et arrière vers la direction 5. La figure 7 montre que les parties 37 et 38 du renfort s'étendent jusque dans la zone centrale, et qu'elles présentent une zone d'intersection avec les zones de montage avant et arrière 15 et 16.The front and rear parts 37 and 38 extend in two converging branches from the corners of the front and rear zones towards direction 5. FIG. 7 shows that the parts 37 and 38 of the reinforcement extend as far as the central zone, and that they have a zone of intersection with the front and rear mounting zones 15 and 16.

Globalement, ce renfort présente une forme du même type que celui décrit relativement à la figure 2. Cependant, le renfort 36 présente une zone de discontinuité entre les zones de montage 15 et 16. Par rapport à la planche de glisse représentée dans la figure 2, dans le cas présent, la planche présente une souplesse accrue dans sa zone centrale 12, plus particulièrement entre les éléments de retenue de chaussure.Overall, this reinforcement has a shape of the same type as that described in relation to FIG. 2. However, the reinforcement 36 has a discontinuity zone between the mounting zones 15 and 16. With respect to the gliding board shown in FIG. 2 , in this case, the board has increased flexibility in its central area 12, more particularly between the shoe retaining elements.

La figure 8 représente une autre variante de mise en oeuvre de l'invention. Selon cette variante, la planche de glisse présente un renfort 40 en deux parties 41 et 42 qui s'étendent respectivement le long des deux bords latéraux de la planche.FIG. 8 represents another variant implementation of the invention. According to this variant, the gliding board has a reinforcement 40 in two parts 41 and 42 which extend respectively along the two lateral edges of the board.

Le renfort 40 présente des caractéristiques géométriques voisines de celles décrites relativement à la figure 4, avec cependant une discontinuité le long de la direction longitudinale 5.The reinforcement 40 has geometrical characteristics close to those described in relation to FIG. 4, with however a discontinuity along the longitudinal direction 5.

La figure 9 présente une autre variante selon laquelle en plus d'une discontinuité longitudinale, le renfort 44 présente une discontinuité transversale entre les zones de montage 15 et 16. Ainsi, le renfort 44 comprend quatre branches 45 à 48 qui s'étendent principalement le long des bords latéraux de la planche de glisse dans les zones avant et arrière. Globalement, le renfort 44 présente une largeur maximale vers les zones de montage 15 et 16. Cette largeur décroît vers les extrémités avant et arrière de la planche.FIG. 9 presents another variant according to which, in addition to a longitudinal discontinuity, the reinforcement 44 has a transverse discontinuity between the mounting zones 15 and 16. Thus, the reinforcement 44 comprises four branches 45 to 48 which mainly extend the along the side edges of the gliding board in the front and rear areas. Overall, the reinforcement 44 has a maximum width towards the mounting zones 15 and 16. This width decreases towards the front and rear ends of the board.

La figure 10 illustre une autre variante de mise en oeuvre de l'invention selon laquelle le renfort présente globalement une largeur ou une raideur supérieure d'un côté de la direction 5.FIG. 10 illustrates another variant embodiment of the invention according to which the reinforcement generally has a greater width or stiffness on one side of the direction 5.

Ainsi, la figure 10 présente un renfort 51 de même nature que le renfort 40 décrit en figure 8. Le renfort 51 présente deux parties 49 et 50 situées le long des bords latéraux de la planche, de part et d'autre de la direction longitudinale 5. La partie 49 le long du bord 6 présente globalement une largeur supérieure et donc une raideur supérieure à celle de la partie 50 le long du bord 7. Cette dissymétrie renforce la raideur d'un bord latéral par rapport à l'autre, et tient compte par exemple de la position dissymétrique du surfeur sur sa planche.Thus, FIG. 10 presents a reinforcement 51 of the same nature as the reinforcement 40 described in FIG. 8. The reinforcement 51 has two parts 49 and 50 situated along the lateral edges of the board, on either side of the longitudinal direction 5. The part 49 along the edge 6 generally has a greater width and therefore a stiffness greater than that of the part 50 along the edge 7. This asymmetry reinforces the stiffness of a lateral edge compared to the other, and takes account for example of the asymmetrical position of the surfer on his board.

La figure 11 représente une autre variante de mise en oeuvre de l'invention selon laquelle la structure de base 54 présente une forme dissymétrique qui est adaptée à la position dissymétrique du surfeur sur sa planche. Cette dissymétrie correspond à l'une des deux positions connues usuellement sous les noms "goofy" ou "regular". De façon connue, elle peut jouer dans la forme des extrémités avant et arrière ainsi que dans la forme et la position relative des lignes de cotes. Par analogie avec la structure précédente 4, la structure 54 présente une direction longitudinale médiane 55.FIG. 11 represents another variant embodiment of the invention according to which the basic structure 54 has an asymmetrical shape which is adapted to the asymmetrical position of the surfer on his board. This asymmetry corresponds to one of the two positions usually known under the names "goofy" or "regular". In known manner, it can play in the shape of the front and rear ends as well as in the shape and the relative position of the dimension lines. By analogy with the previous structure 4, the structure 54 has a median longitudinal direction 55.

La figure 11 montre un renfort 56 de même nature que le renfort 51 précédent, dont les deux parties 57 et 58 présentent des proportions et des positions en relation avec la dissymétrie de la structure 54. Ainsi, la planche représentée en figure 10 présente un bord latéral 59 décalé vers l'avant par rapport au bord 60. De la même façon, la partie 57 du renfort est décalée vers l'avant par rapport à la partie 58. La forme et la raideur du renfort peuvent aussi être différentes sur les deux parties 57 et 58, en relation avec la dissymétrie de la structure de base 54.FIG. 11 shows a reinforcement 56 of the same nature as the preceding reinforcement 51, the two parts 57 and 58 of which have proportions and positions in relation to the asymmetry of the structure 54. Thus, the board shown in FIG. 10 has an edge lateral 59 offset forwards with respect to edge 60. Similarly, part 57 of the reinforcement is offset forwards with respect to part 58. The shape and stiffness of the reinforcement can also be different on the two parts 57 and 58, in relation to the asymmetry of the basic structure 54.

Toutefois, comme dans les cas précédents, la largeur du renfort 56 est maximale vers les zones de montage des fixation 65 et 66, et décroît progressivement vers les extrémités des zones avant et arrière.However, as in the previous cases, the width of the reinforcement 56 is maximum towards the mounting areas of the fasteners 65 and 66, and gradually decreases towards the ends of the front and rear areas.

La figure 12 illustre une autre variante, selon laquelle la planche de glisse présente un renfort 67 en deux parties 68 et 69 situées de part et d'autre de la direction longitudinale médiane 5. La largeur des parties 68 et 69 croît depuis chacune des extrémités des zones avant et arrière, et elle présente au centre des fluctuations locales notamment au niveau des zones de montage 15 et 16. De telles fluctuations locales peuvent aussi être présentes sur l'épaisseur du renfort.FIG. 12 illustrates another variant, according to which the gliding board has a reinforcement 67 in two parts 68 and 69 situated on either side of the median longitudinal direction 5. The width of the parts 68 and 69 increases from each of the ends front and rear zones, and it has local fluctuations in the center, in particular at the level of the mounting zones 15 and 16. Such local fluctuations can also be present on the thickness of the reinforcement.

La figure 13 illustre un premier mode de construction de la planche de glisse. Selon ce mode de construction, la structure de base 4 présente une construction traditionnelle, par exemple une structure de type caisson avec un noyau central 70, enveloppé sur le dessus et sur les cotés par une couche de renfort 71. Dans sa partie inférieure, la structure présente une couche de renfort inférieure 72 située entre les deux carres latérales 74 et 75, et sous la couche 72 une couche de semelle 73. La structure est revêtue dans sa partie supérieure d'une couche de décor 75.FIG. 13 illustrates a first mode of construction of the gliding board. According to this mode of construction, the basic structure 4 has a traditional construction, for example a box-type structure with a central core 70, wrapped on top and on the sides by a reinforcing layer 71. In its lower part, the structure has a lower reinforcement layer 72 situated between the two lateral edges 74 and 75, and under layer 72 a sole layer 73. The structure is coated in its upper part with a decoration layer 75.

Selon le mode de réalisation de la figure 13, le renfort 76 est rapporté à la surface supérieure de la structure de base 4, c'est-à-dire au dessus de la couche de décor. Le renfort est assemblé par tout moyen approprié à sa nature, notamment collage, soudage, assemblage mécanique.According to the embodiment of Figure 13, the reinforcement 76 is attached to the upper surface of the base structure 4, that is to say above the decor layer. The reinforcement is assembled by any means appropriate to its nature, in particular bonding, welding, mechanical assembly.

La figure 14 illustre une variante, selon laquelle le renfort 78 est assemblé à la surface supérieure de la couche de renfort supérieure 79, et l'ensemble est recouvert par la couche de décor 80. Entre les branches du renfort 78, la couche de décor affleure la surface supérieure de la couche de renfort supérieure.FIG. 14 illustrates a variant, according to which the reinforcement 78 is assembled to the upper surface of the upper reinforcement layer 79, and the assembly is covered by the decor layer 80. Between the branches of the reinforcement 78, the decor layer is flush with the upper surface of the upper reinforcement layer.

La figure 15 illustre une autre variante selon laquelle l'espace 83 entre les branches 81 et 82 du renfort est comblé par un matériau de remplissage à faible module, c'est-à-dire qui a une influence négligeable sur la raideur de l'ensemble. L'ensemble est recouvert par la couche de décor.FIG. 15 illustrates another variant according to which the space 83 between the arms 81 and 82 of the reinforcement is filled with a filling material with low modulus, that is to say which has a negligible influence on the stiffness of the together. The whole is covered by the decor layer.

La figure 16 représente une autre variante selon laquelle une couche de matériau déformable 86 est intercalé entre le renfort 85 et la structure de base. Ce matériau présente par exemple des caractéristiques amortissantes de type visco-élastique. Egalement, il peut s'agir d'un matériau qui a la faculté de se déformer à l'étirement ou au cisaillement en absorbant de l'énergie. Un tel matériau est connu de l'homme du métier, il s'agit par exemple de caoutchouc.FIG. 16 represents another variant according to which a layer of deformable material 86 is interposed between the reinforcement 85 and the base structure. This material has, for example, visco-elastic type damping characteristics. Also, it may be a material which has the ability to deform when stretched or sheared by absorbing energy. Such a material is known to a person skilled in the art, for example rubber.

Comme dans le cas des figures 13 et 14, la couche de décor 84 recouvre la structure de base, y compris le renfort 85.As in the case of FIGS. 13 and 14, the decor layer 84 covers the basic structure, including the reinforcement 85.

La figure 17 représente une variante du même type, à la différence près que le renfort 87 et la couche déformable 88 sont assemblés à la surface supérieure de la couche de décor 89.FIG. 17 represents a variant of the same type, with the difference that the reinforcement 87 and the deformable layer 88 are assembled on the upper surface of the decor layer 89.

La figure 18 illustre une autre variante selon laquelle le renfort 90 s'étend au moins localement le long des flancs de la structure de base, jusqu'aux carres latérales. En d'autres termes dans les zones où le renfort s'étend le long des bords latéraux de la structure de base, il présente au moins localement des prolongements 91 qui couvrent les flancs 92 de la structure de base jusqu'aux carres latérales 93, 94. Dans le mode de réalisation illustré, une couche de décor 95 recouvre l'ensemble. Ceci n'est pas limitatif, et comme dans le cas des figures 13 et 17, le renfort pourrait être rapporté au-dessus de la couche de décor.FIG. 18 illustrates another variant according to which the reinforcement 90 extends at least locally along the sides of the basic structure, up to the lateral edges. In other words, in the zones where the reinforcement extends along the lateral edges of the base structure, it has at least locally extensions 91 which cover the sides 92 of the base structure up to the lateral edges 93, 94. In the illustrated embodiment, a decorative layer 95 covers the assembly. This is not limiting, and as in the case of FIGS. 13 and 17, the reinforcement could be added above the decor layer.

Ces modes de construction présentent l'avantage de partir d'une structure de base de type standard dont la raideur en torsion et en flexion sont ensuite définies selon la géométrie et le matériau du renfort en fonction du type de planche de glisse souhaité.These construction methods have the advantage of starting from a basic structure of standard type whose stiffness in torsion and in flexion are then defined according to the geometry and the material of the reinforcement according to the type of gliding board desired.

D'autres modes de construction sont aussi possibles. Notamment, le renfort peut être intégré au sein même de la structure de base, ou au niveau de sa surface de glisse.Other construction methods are also possible. In particular, the reinforcement can be integrated within the basic structure itself, or at its sliding surface.

Naturellement, la présente description n'est donnée qu'à titre indicatif, et l'on pourrait adopter d'autre mises en oeuvre de l'invention sans pour autant sortir du cadre de celle-ci.Naturally, the present description is given for information only, and other implementations of the invention could be adopted without departing from the scope thereof.

En particulier, il va de soi que l'on pourrait n'équiper qu'une zone avant ou arrière des différentes géométries de renfort qui ont été décrites.In particular, it goes without saying that one could only equip a front or rear area with the various reinforcement geometries which have been described.

Egalement il est possible d'utiliser des géométries différentes de renfort pour les zones avant et arrière, par exemple utiliser pour la zone avant une géométrie en "V" du type de celle de la figure 3, et pour la zone arrière une géométrie en "I" du type de la figure 4. De nombreuses combinaisons de ce type sont possibles.It is also possible to use different reinforcement geometries for the front and rear zones, for example use for the front zone a "V" geometry of the type of that of FIG. 3, and for the rear zone a " I "of the type in FIG. 4. Many combinations of this type are possible.

Claims (10)

Planche de glisse, notamment mais non exclusivement planche de surf de neige, destinée à supporter les deux chaussures d'un surfeur qui sont retenues sur la planche l'une à coté de l'autre par des éléments de fixation (2, 3), comprenant une structure de base (4, 54) longiligne, en forme de plaque, dont au moins l'extrémité avant (4a) est relevée pour former la spatule, la structure de base comprenant une zone centrale (12) avec deux zones de montage (15, 16, 65, 66) pour les éléments de fixation, les zones de montage de fixation étant décalées l'une par rapport à l'autre le long d'une direction longitudinale médiane (5) définie par la structure de base, la structure de base comprenant par ailleurs une zone avant (13) située en avant de la zone centrale, et une zone arrière (14) située en arrière de la zone centrale, caractérisée par le fait qu'elle présente au moins dans l'une des zones avant ou arrière (13,14) un renfort longiligne (20, 25, 32, 36, 40, 44, 51, 56) profilé suivant la longueur et la largeur de ladite zone, qui s'étend depuis au moins le voisinage de l'extrémité (4a, 4b) de la structure de base, jusque au moins le voisinage de la zone de montage (16, 15, 65, 66) pour l'élément de fixation situé du côté de ladite zone avant ou arrière de façon à augmenter la résistance à la torsion et/ou à la flexion d'une surface de la structure de base couvrant ladite zone avant ou arrière (13, 14) et une partie au moins de ladite zone de montage (16, 15, 65, 66).Snowboard, in particular but not exclusively snowboard, intended to support the two shoes of a surfer which are retained on the board one next to the other by fastening elements (2, 3), comprising a slender, plate-shaped base structure (4, 54), at least the front end (4a) of which is raised to form the spatula, the base structure comprising a central zone (12) with two mounting zones (15, 16, 65, 66) for the fixing elements, the fixing mounting zones being offset with respect to each other along a median longitudinal direction (5) defined by the basic structure, the basic structure further comprising a front zone (13) situated in front of the central zone, and a rear zone (14) situated behind the central zone, characterized in that it has at least in one front or rear areas (13,14) a long reinforcement (20, 25, 32, 36, 40, 44, 51, 56) profiled along the length and width of said zone, which extends from at least the vicinity of the end (4a, 4b) of the base structure, up to at least the vicinity of the mounting zone (16, 15, 65, 66) for the fastening element located on the side of said front or rear area so as to increase the resistance to torsion and / or bending of a surface of the basic structure covering said front area or rear (13, 14) and at least part of said mounting area (16, 15, 65, 66). Planche selon la revendication 1, caractérisée par le fait que la raideur du renfort décroît globalement depuis la zone de montage (16, 15, 65, 66) vers l'extrémité de la zone avant ou arrière (13, 14).Board according to claim 1, characterized in that the stiffness of the reinforcement decreases overall from the mounting zone (16, 15, 65, 66) towards the end of the front or rear zone (13, 14). Planche selon l'une quelconque des revendications précédentes, caractérisée par le fait que dans la zone centrale (12), entre les zones de montage (16,15, 65, 66) pour les éléments de fixation, la raideur du renfort est localement plus faible.Board according to any one of the preceding claims, characterized in that in the central zone (12), between the mounting zones (16,15, 65, 66) for the fastening elements, the stiffness of the reinforcement is locally more low. Planche selon la revendication 1, caractérisée par le fait que le renfort (25, 40, 44, 51) s'étend dans ladite zone avant ou arrière selon deux branches (28, 29, 30, 31) situées le long des bords latéraux (6, 7) de la structure de base, depuis l'extrémité de ladite zone avant ou arrière (13, 14) vers les deux bords latéraux de la zone de montage (16, 15).Board according to claim 1, characterized in that the reinforcement (25, 40, 44, 51) extends in said front or rear zone along two branches (28, 29, 30, 31) located along the lateral edges ( 6, 7) of the basic structure, from the end of said front or rear zone (13, 14) to the two lateral edges of the mounting zone (16, 15). Planche selon la revendication 1, caractérisée par le fait que le renfort (20, 36) s'étend dans ladite zone avant ou arrière (13, 14) selon deux branches (21, 22, 23, 24) convergeant depuis chaque coin de la structure de base (4) vers ladite zone de montage avant ou arrière (16,15) le long de la direction longitudinale médiane (5).Board according to claim 1, characterized in that the reinforcement (20, 36) extends in said front or rear zone (13, 14) along two branches (21, 22, 23, 24) converging from each corner of the base structure (4) towards said front or rear mounting area (16,15) along the median longitudinal direction (5). Planche selon la revendication 1, caractérisée par le fait que le renfort (32) s'étend dans ladite zone avant ou arrière (13, 14) selon une branche (33, 34) située le long de la direction longitudinale médiane (5) définie par la structure de base (4).Board according to claim 1, characterized in that the reinforcement (32) extends in said front or rear zone (13, 14) along a branch (33, 34) located along the defined longitudinal center direction (5) by the basic structure (4). Planche selon l'une quelconque des revendications précédentes, caractérisée par le fait que le renfort (36, 44) s'étend dans la zone avant et dans la zone arrière (13, 14), et qu'il présente une discontinuité entre les zones de montage (16, 15).Board according to any one of the preceding claims, characterized in that the reinforcement (36, 44) extends in the front zone and in the rear zone (13, 14), and that it has a discontinuity between the zones mounting (16, 15). Planche selon l'une des revendications 1, 2 ou 3, caractérisée par le fait que le renfort (40, 44, 51, 56) s'étend en continu dans la zone avant (13), la zone centrale (12) et la zone arrière (14), et qu'il présente une discontinuité le long de la direction longitudinale médiane (5) définie par la structure de base (4, 54).Board according to one of claims 1, 2 or 3, characterized in that the reinforcement (40, 44, 51, 56) extends continuously in the front zone (13), the central zone (12) and the rear zone (14), and that it has a discontinuity along the median longitudinal direction (5) defined by the basic structure (4, 54). Planche selon la revendication 1, 4 ou 5, caractérisée par le fait que les deux branches (21, 22, 23, 24, 28, 29, 30, 31) sont reliées de façon continue par une liaison de pontage (26, 27) qui présente une surface commune avec la zone de montage de fixation (16, 15).Board according to claim 1, 4 or 5, characterized in that the two branches (21, 22, 23, 24, 28, 29, 30, 31) are continuously connected by a bridging link (26, 27) which has a common surface with the mounting mounting area (16, 15). Planche selon l'une quelconque des revendications 2 à 9, caractérisée par le fait que la ou les branches présentent une raideur localement variable sur leur longueur.Board according to any one of claims 2 to 9, characterized in that the branch or branches have a locally variable stiffness over their length.
EP94103769A 1993-04-30 1994-03-11 Snowboard Expired - Lifetime EP0622096B1 (en)

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FR9305397 1993-04-30
FR9305397A FR2704440B1 (en) 1993-04-30 1993-04-30 SNOWBOARD, ESPECIALLY SNOW SURF.

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Also Published As

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ATE142522T1 (en) 1996-09-15
JPH06343734A (en) 1994-12-20
DE69400500D1 (en) 1996-10-17
US5573264A (en) 1996-11-12
FR2704440A1 (en) 1994-11-04
DE69400500T2 (en) 1997-02-13
FR2704440B1 (en) 1995-07-28
EP0622096B1 (en) 1996-09-11
US5988668A (en) 1999-11-23

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