EP0626873B1 - Device for modifying the natural distribution of a ski on its sliding surface and ski brake - Google Patents

Device for modifying the natural distribution of a ski on its sliding surface and ski brake Download PDF

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Publication number
EP0626873B1
EP0626873B1 EP93901793A EP93901793A EP0626873B1 EP 0626873 B1 EP0626873 B1 EP 0626873B1 EP 93901793 A EP93901793 A EP 93901793A EP 93901793 A EP93901793 A EP 93901793A EP 0626873 B1 EP0626873 B1 EP 0626873B1
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EP
European Patent Office
Prior art keywords
ski
base
stiffening member
levers
blade
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Expired - Lifetime
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EP93901793A
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German (de)
French (fr)
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EP0626873A1 (en
Inventor
Bernard Couderc
Pierre 61 Rue De La Grenette Szafranski
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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
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/075—Vibration dampers
    • 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

Definitions

  • the invention relates to a device for modifying the natural pressure distribution of a ski, such as that in particular an alpine ski on its sliding surface, as well as a ski brake.
  • the invention also relates to a ski, in particular an alpine ski, which is equipped with a device aimed at modify its pressure distribution on its sliding surface.
  • the skis which are used for the practice of alpine skiing consist of boards relatively long, on which the skier's shoes are retained, most often by elements of front and rear fixing. Shoes and fasteners are approximately in the middle area of the ski, which is commonly called the skate.
  • the skis present in themselves, at rest, a natural camber. They also present a some flexibility. When skiing, the ski deforms elastically to respond to different stresses to which it is subjected on the part of the skier, and by reaction, of the surface on which it slides.
  • the main stress to which the ski is subjected, from the skier, is generated by the weight of the skier. This weight is located approximately in the area of the ski skate.
  • the ski is also stressed by the binding elements. It is indeed known that the elements of fastening pinch the shoe. To do this, the rear fixing element is generally mounted sliding, and it is elastically recalled forward by springs which are called springs step back. The reaction to this pinching action is transmitted by the binding elements to the ski. This reaction is different, however, depending on whether the front fastener and the fastener rear are each secured to the ski, or else the front fastening element is secured to the ski, and the rear fixing element is connected to the front fixing element by inextensible means, such as than a blade.
  • ski can be made more or less pivoting or more or less guiding, that is, one can promote one's ability to turn easily or to present a high driving stability.
  • the pressure distribution of the ski on the snow is determined mainly by the internal structure of the ski, and by the method of assembling the elements binding to the ski, that is to say with or without connecting blade between the front and rear elements.
  • the pressure distribution can also be influenced by the thrust intensity given to the spring step back.
  • European patent application No. 183 586 describes a blade of elastic material attached above the ski, between the binding elements and the ski. This blade has, at its front end and its rear end, sliders through which a portion of the forces to which the ski is subjected passes vertically.
  • This device however has the disadvantage of having modest performance, for a large size. It is suitable for the case where both feet of the skier are in support for the same ski, to avoid that the whole weight of the skier is concentrated in the skate area. On the other hand, it would be ill-suited in the case of a pair of traditional skis.
  • One of the aims of the present invention is to propose a device which overcomes these drawbacks, and which allows the ski to be preloaded in an adjustable manner in front and behind the skate area.
  • the French patent application published under the number FR 2 513 132 describes a brake the actuation pedal of which comprises two levers hinged together at their adjacent end.
  • One of the levers is also articulated to a base secured to the ski.
  • the other lift carries arms of brake, and it is connected to the base at a light oriented longitudinally.
  • a spring exerts a restoring force on the movable end of this lever, which tends to fold the two levers one against each other.
  • this device has no significant influence on skiing. Indeed, it is of relatively small dimensions, in addition all the longitudinal forces are transmitted by reaction to a single piece, that is to say the base. Therefore, these efforts do not affect the structure of the ski.
  • Another object of the present invention is to provide a device which has a space requirement reduced.
  • Another object of the present invention is to provide a device which only influences so moderate flexibility of the skate during ski flexions.
  • Another object of the present invention is to provide a device which generates on the ski a bending stress only when the ski is used.
  • the device according to the invention aims to modify the natural pressure distribution of a ski such that in particular an alpine ski on its sliding surface, the ski being intended to be used with a shoe.
  • the device comprises a front base plate and a rear base plate provided to be joined to the ski in its central area, each of the base plates having a tip raised relative to the upper surface of the ski, a slender stiffening member incompressible which is intended to extend above the upper surface of the ski, the ends of the stiffening member being in abutment against the ends of the base plates.
  • the ski brake is intended to brake the movement of a ski in the absence of the boot. he includes at least one brake arm designed to be mounted on the ski, and movable between a position work where the brake protrudes under the lower surface of the ski, and a rest position where the arm goes up along the side edges of the ski, comprising a movable actuating toggle between a flattened position and a folded position to control the movement of the brake arm and a spring reminder to resiliently apply the kneepad in its folded position corresponding to the working position of the brake arm. It is characterized by the fact that the two ends of the toggle are connected to the end caps of two brake base plates, the base plates being separate and designed to be assembled directly to the ski remotely.
  • Figure 1 is a perspective view of a ski in its skate area, equipped, moreover, with a device according to a first implementation of the invention.
  • FIG. 2 is a side view of the embodiment shown in FIG. 1.
  • Figure 3 is a top view of the stiffening blade.
  • Figure 4 is a side view of the rider who straddles the stiffening blade.
  • FIG. 5 is a perspective view of a base plate associated with one of the elements of fixation.
  • Figure 6 is a partial side view, in section, which illustrates the connection between the end of the blade stiffening and base plate.
  • Figure 7 is a view similar to that of Figure 2, in another operating position of the device.
  • FIG. 8 is a perspective view, in the skate area, of a ski equipped with a device according to a another embodiment of the invention.
  • FIG. 9 is a partial side view which illustrates the operation of the device present in the Figure 8, the fasteners are not shown in this figure.
  • Figure 10 is a view similar to Figure 9 in another operating position.
  • Figures 11 and 12 illustrate the mode of retraction of the brake which equips the device of Figures 9 and 10.
  • Figure 13 is a partial side view, in section, which illustrates an alternative embodiment of the device shown in Figures 9 and 10.
  • FIG. 14 represents the spring which equips the device of FIG. 13.
  • Figure 1 shows the skate area of a ski.
  • the ski has in this zone a base 1, on which are mounted two front and rear fasteners 2 and 3.
  • These fasteners are of any suitable type, and they usually include a jaw which retains the front end or rear of the shoe, and which is movable against the restoring force of an elastic return mechanism.
  • the front fixing element 2 also has a base 6 by which it is secured to the ski, by any suitable means, and for example by screwing.
  • a support plate 4 is, moreover, located in the rear part of the base 6, and this support plate is intended to receive the end front of the shoe sole.
  • the rear fastening element 3 has in known manner a movable body along a slide 7, the slide itself being secured to the base 1 by any suitable means, for example by screwing.
  • the front part of the slide has a support plate 5 which is intended to receive the end rear of the shoe sole.
  • a braking device 9 is, moreover, associated with the rear fixing element 3.
  • This device is of a known type, and in particular it comprises at least one, and preferably two braking arms 10, 11, which are movable between a working position where they protrude below the lower surface of the base 1 of the ski, and a rest position where they rise above the upper surface of the base.
  • An actuating device 12 sensitive to the presence or absence of shoes also controls the passage of the brake arms to the rest position when the shoe is engaged in the fasteners.
  • the actuation device is a pedal which is connected to the brake arm 10 and 11 by links 14, these links constituting in fact the extension of the brake arms 10 and 11 above the upper surface of the ski base.
  • a known elastic return device also ensures the return of the brake arms to the position of work where they make room under the lower surface of the ski.
  • This elastic return device elastically opposes the movement of the brake arms of their working position to their rest position.
  • the device shown in the figures also has a stiffening member consisting by a stiffening blade 15 which extends above the upper surface of the base 1 according to a longitudinal direction.
  • the central part of the blade 15 extends flat against the upper surface of the base 1, approximately between the front fixing element 2 and the rear fixing element 3.
  • the ends of the blade are raised relative to the upper surface of the base 1, and they are supported in an approximately longitudinal direction against stops integral with the base. The blade exerts on these stops a thrust oriented towards the ends of the base.
  • the blade 15 is incompressible in a longitudinal direction, and it also has elastic flexural qualities in the vertical and longitudinal median plane which it defines. It is carried out in any suitable material, and, for example, in a composite material possibly charged with fibers.
  • the blade 15 which is shown in Figures 1 to 7 is a single continuous piece which has a constant thickness.
  • the blade 15 has two parts, a front part 16 of constant width, and a rear part 17 also of constant width, but greater than that of part 16.
  • the two parts 16 and 17 are separated by a shoulder zone 18.
  • a rider 20 secured to the ski overlaps, moreover, the blade 15 in its part 16.
  • the rider 20 has in its part lower a recess 21 whose dimensions correspond to that of a cross section of the part 16.
  • the rider 20 preserves the blade from buckling in its front part 16.
  • the front and rear ends 22 and 23 of the blade are supported in a direction approximately longitudinal against a stop integral with the ski.
  • FIG. 5 represents such a stop for the rear fixing element 3 in the form of a base plate 25, which has a plate 26 intended to be interposed between the slide 7 and the upper surface of the base 1.
  • a stirrup 29 extends in a direction overall inclined, so that the central part 30 of the stirrup is raised relative to the upper surface of the base 1.
  • This central part 30 is pierced in a longitudinal direction, a tapped hole 31 in which a threaded plug 32 is screwed to a depth which can be variable.
  • the plug 32 is equipped with a tip 33, which has a notch 34 in which the raised end 23 of the blade comes to bear in a direction approximately longitudinal.
  • the plate 26 has, moreover, in its lower part, a longitudinal groove 34 whose dimensions correspond to those of a cross section of the rear part 17 of the blade.
  • the plate 26 is in two parts, a rear part which carries the stirrup 29, and a front part independent of the rear part, which in fact plays the role of shim thickness.
  • a base plate 35 of the same type At the front fastening element 2 is a base plate 35 of the same type, with a plate 36 interposed between the base 6 of the binding element 2, and the base 1 of the ski. Platinum 36 forwards a stirrup 39, with a central part 40 which is fitted with a plug 42. The front end 22 of the blade bears against a tip 43 movable in a direction longitudinal with the rotation of the plug 42.
  • the plate 36 has, in addition, a longitudinal groove 44 whose dimensions are substantially the same as those of a cross section of the front part 16 of the blade.
  • the distance between the two end pieces 33 and 43 of the front and rear base plates is substantially equal to the length of the blade 15.
  • the buckling zone 17a and the actuation pedal 12 of the braking device are provided for cooperate together, that is to say that when the actuation pedal is driven down by the shoe sole, it presses against the buckling area, so as to flatten this area and forcing the blade to expand against each base plate 25, 35.
  • a shoe shown diagrammatically at 50 is engaged between the elements of front and rear attachment 2 and 3.
  • the actuation pedal 12 of the braking device is located low position, between the sole of the shoe and the buckling zone 17a of the blade 15 which it presses against the upper surface of the base 1.
  • the disappearance of the buckling of the zone 17a caused by the presence of the shoe 50, tends to increase the distance between the ends 22 and 23 of the blade, which are pressed against the front and rear base plates 25 and 35. This therefore causes in the blade 15 a compressive stress, which is transmitted to the base plates 25 and 35, and which induces a bending moment of the front end and the rear end of the base 1.
  • a shim 49 is placed between the upper surface of the base 1 and the area 17a of the blade, to maintain a start of buckling when this zone 1 Ta is flattened by the pedal against the upper surface of the base 1 of the ski.
  • the area 17a constitutes for the blade 17 taring means which induce in the blade a stress of compression.
  • the determined value of the bending moments is also adjustable by screwing the threaded plugs 32 and 42 against which the ends 22 and 23 of the blade bear. More the caps 32 and 42 are screwed, plus the stress that the blade 15 exerts on the base at the decks 26 and 36 is strong.
  • the rider 20 can also cooperate with the shoulder zone 18 presented by the blade 15, so that the blade induces a bending moment of different intensity towards the front and towards the rear of the ski. Indeed, if the jumper 20 is placed relative to the shoulder 18, so that the area shoulder 18 comes into contact with the rider 20 during the flattening of the flamed area 17a, part of the compressive stress that the blade 15 exerts towards the front of the ski is absorbed by the rider 20, and therefore does not reach the base plate 35. The blade 15 therefore exerts on the base plate 35 a lower pushing force than it exerts on the rear base plate 25. The bending moment induced on the front end of the ski is thus less than the bending moment armature on the back.
  • the shoulder zone 18 could be located on the blade 15 immediately behind of plate 36, and cooperate with the front wall of this plate so that the blade transmits to forward a lower pushing force forward than backward.
  • fastening elements 2 and 3 are connected to the base of the ski, and not to the stiffening blade. We therefore keep a very good contact between the base 1 and the sole of shoe, and a very good transmission of the stresses and forces which pass between the ski boot and base.
  • FIG. 8 illustrates another embodiment of the invention, and more precisely a variant of the stiffening blade.
  • FIG. 8 represents a base 1, a front fixing element 2 and a fixing element rear 3, which are identical to the elements previously described. Also, each element is equipped with a base plate 25, 35, which is identical to the previous base plates. Between the base plates 25 and 35 extends a stiffening member 55.
  • the stiffening member 55 comprises a rear part 56, a front part 57, and a central toggle 58.
  • the rear and front parts 56 and 57 are formed by blade portions which have qualities similar to the blade 15 previously described, that is to say qualities of incompressibility in a longitudinal direction and of elastic bending in a vertical plane.
  • the rear part 56 extends from the base plate 25 to front of the fixing element 3, passing under the plate 26 associated with this fixing element, the same way as described above.
  • the front portion 57 extends from the front base plate to behind the fixing element 2, passing under this fastening element.
  • a toggle device also connects the front end of the rear blade portion to the rear end of the front blade portion.
  • the device 58 in its embodiment shown in the figure, includes two levers 59 and 60, which extend in a direction longitudinal, and which are hinged together around a horizontal and transverse axis 61.
  • Le lever rear 59 is articulated at the front end of the portion 56, around a horizontal and transverse axis 62.
  • the front lever 60 is articulated around a horizontal and transverse axis 63 to the rear end of the blade portion 57.
  • the ends of the blade portions 56 and 57, to which the levers 59 and 60 are connected are equipped with a tip piece 66 and 67, which cross axes 62 and 63 respectively.
  • the axis 61 which connects the two levers 59 and 60 is carried by the lever 59, and it is movable according to the longitudinal direction of the lever 60 along a lumen 65 which is located in the rear part thereof.
  • the lever 60 has, moreover, in its rear part at least one spring which pushes the axis 61 resiliently toward the rear end of the lumen 65.
  • the lever 60 is extended beyond the axis 61 by a pallet 70 which covers the lift 59 when the knee brace 58 is in its flattened position.
  • a stop lower 71 of the lever 60 prevents the hinge pin 61 from passing under the alignment of the other two axes 62 and 63, in such a way that the toggle never locks and tends permanently to open under the pushing force of the spring 69.
  • the front end 74 of the lever 59 abuts against a stop surface 75, that the lever 60 has just behind the light 65. In this way, in the flattened position of the knee pad 58, it is possible to abut one against the other the two levers 59 and 60, according to a longitudinal direction.
  • the stiffening member then exerts on the base plates 25 and 35 an elastic stress as long as there is still play, then a stress not elastic when the front end 74 of the lever 59 abuts against the abutment surface 75.
  • the stiffening member then constrains the base elastically in a first phase of its bending and then not elastic.
  • the toggle joint 58 therefore constitutes setting means which induce in the connecting member 51 a variable compressive stress depending on the presence or absence of the shoe.
  • the base plates 25 and 35 are equipped, as in the previous case, with a adjustment cap 32 and 42.
  • the front end 74 of the lever 59 will be or not in contact with the abutment surface 75 of the lever 60 in the flattened position of the toggle. If there is no contact, the stiffening member will generate, on the front and rear base plates, a force of thrust which will tend to increase with the ski flexes. These ski flexes tend, in fact, to bring the two portions 56 and 57 closer to each other, resulting in additional compression of the spring 69.
  • stiffening member behaves like an incompressible blade of the same like what was described for blade 15.
  • FIG. 8 illustrates a shoulder zone 68 which is capable of cooperating with the front face of the plate 36 according to the setting of the plugs 32 and 42.
  • the lever 59 carries brake arms 80 and 81. These brake arms follow the rotational movements of the lever 59 around the axis 62.
  • the FIG. 9 represents the lever 59 in the inclined position, which projects the brake arms 80 and 81 under the lower surface of the base 1.
  • the lever 59 extends substantially along a horizontal direction, and the brake arms 80 and 81 are brought back above the upper surface ski.
  • the knee brace 58 when brought into the flattened position, exerts two actions different. On the one hand, it generates a compressive stress in the stiffening member 55, and on the other hand, it brings the brake arms back from their working position to their rest position.
  • means also cause the retraction of the brake, that is to say the bringing together of the arms 80 and 81 towards the longitudinal axis of the ski.
  • the lever 59 is constructed in the manner of a hollow casing, inside which the arms brake 80 and 81 penetrate by transverse segments 80a, 81a, then exit by two segments 80c and 81c, substantially in alignment with each other, which constitute the horizontal axis 61 and transverse previously described. This axis runs through the light 65 of sunrise 60.
  • the brake arms 80 and 81 are movable in the plane defined by the casing 59, and they are held at the level of the lateral openings which they pass through, as well as by two central pots 83 and 84.
  • the spring 69 previously described is split, and each element presses on a segment 80c, 81c, arms 80 and 81.
  • FIG. 11 corresponds to the open position of the toggle joint, and in this position the springs 69 elastically stress the brake arms 80 and 81 at the spacing.
  • Figure 12 corresponds to the flattened position of the toggle. In this position, the ends segments 80c and 81c abut in the front part of the lumen 65, which forces the arms brake 80 and 81 to approach the longitudinal axis of the ski.
  • FIG. 13 illustrates an alternative embodiment according to which the thrust spring 69 is replaced by a torsion spring 90.
  • the two levers 91 and 92 are hinged together about an axis 93.
  • the spring 90 has two windings coaxial with the articulation axis 93, one central loop 94 which bears against the segments 80c and 81c of the arms of the kidney, and two free ends 95 and 96 which, in turn, bear against the lever 60.
  • the axis 93 is movable along a lumen 98 of the lever 91.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)
  • Friction Gearing (AREA)
  • Floor Finish (AREA)

Abstract

PCT No. PCT/FR92/01082 Sec. 371 Date Aug. 12, 1994 Sec. 102(e) Date Aug. 12, 1994 PCT Filed Nov. 23, 1992 PCT Pub. No. WO93/15797 PCT Pub. Date Aug. 19, 1993A device for modifying the pressure distribution of a ski over its gliding surface. The ski has a base and two binding elements. It further includes a long stiffening member which extends above the base of the ski and which has opposite ends affixed to the ski by base plates. Furthermore, the device includes a calibration device to induce a compression stress in the stiffening member that can vary between two values depending upon the presence or absence of the boot. According to a preferred embodiment, the calibration device includes a toggle joint mechanism constituted by a pair of journalled levers, one of the levers bearing the braking arms for the ski. The invention also is directed to a ski brake.

Description

L'invention concerne un dispositif visant à modifier la répartition naturelle de pression d'un ski, tel que notamment un ski alpin sur sa surface de glisse, ainsi qu'un frein de ski.The invention relates to a device for modifying the natural pressure distribution of a ski, such as that in particular an alpine ski on its sliding surface, as well as a ski brake.

L'invention concerne aussi un ski, notamment un ski alpin, qui est équipé d'un dispositif visant à modifier sa répartition de pression sur sa surface de glisse.The invention also relates to a ski, in particular an alpine ski, which is equipped with a device aimed at modify its pressure distribution on its sliding surface.

Les skis qui sont utilisés pour la pratique du ski alpin sont constitués par des planches relativement longues, sur lesquelles les chaussures du skieur sont retenues, le plus souvent par des éléments de fixation avant et arrière. Les chaussures et les éléments de fixation se trouvent approximativement dans la zone médiane du ski, qui est appelée couramment le patin.The skis which are used for the practice of alpine skiing consist of boards relatively long, on which the skier's shoes are retained, most often by elements of front and rear fixing. Shoes and fasteners are approximately in the middle area of the ski, which is commonly called the skate.

Les skis présentent en eux-mêmes, au repos, un cambre naturel. Ils présentent, par ailleurs, une certaine flexibilité. Lors de la pratique du ski, le ski se déforme de manière élastique pour répondre aux différentes sollicitations auxquelles il est soumis de la part du skieur, et par réaction, de la surface sur laquelle il glisse.The skis present in themselves, at rest, a natural camber. They also present a some flexibility. When skiing, the ski deforms elastically to respond to different stresses to which it is subjected on the part of the skier, and by reaction, of the surface on which it slides.

La sollicitation principale à laquelle le ski est soumis, en provenance du skieur, est générée par le poids du skieur. Ce poids est localisé approximativement dans la zone du patin du ski.The main stress to which the ski is subjected, from the skier, is generated by the weight of the skier. This weight is located approximately in the area of the ski skate.

Le ski est également sollicité par les éléments de fixation. Il est en effet connu que les éléments de fixation pincent la chaussure. Pour ce faire, l'élément de fixation arrière est généralement monté coulissant, et il est rappelé élastiquement vers l'avant par des ressorts qui sont dénommés ressorts de recul. La réaction à cette action de pincement est transmise par les éléments de fixation au ski. Cette réaction est différente toutefois selon que l'élément de fixation avant et l'élément de fixation arrière sont chacun solidarisés au ski, ou bien que l'élément de fixation avant est solidarisé au ski, et l'élément de fixation arrière est relié à l'élément de fixation avant par un moyen inextensible, tel qu'une lame.The ski is also stressed by the binding elements. It is indeed known that the elements of fastening pinch the shoe. To do this, the rear fixing element is generally mounted sliding, and it is elastically recalled forward by springs which are called springs step back. The reaction to this pinching action is transmitted by the binding elements to the ski. This reaction is different, however, depending on whether the front fastener and the fastener rear are each secured to the ski, or else the front fastening element is secured to the ski, and the rear fixing element is connected to the front fixing element by inextensible means, such as than a blade.

Il est connu que l'on peut modifier le comportement du ski sur la neige, et en particulier sa conduite, en influant sur sa cambrure, ou bien sur la répartition longitudinale du ski sur la neige. En jouant sur cette répartition de pression, il est connu que l'on peut rendre le ski plus ou moins pivotant ou plus ou moins guidant, c'est-à-dire que l'on peut favoriser son aptitude à virer facilement ou à présenter une grande stabilité de conduite.It is known that one can modify the behavior of the ski on snow, and in particular its handling, by influencing its camber, or else the longitudinal distribution of the ski on snow. Playing on this pressure distribution, it is known that the ski can be made more or less pivoting or more or less guiding, that is, one can promote one's ability to turn easily or to present a high driving stability.

Pour les skis qui sont actuellement commercialisés, la répartition de pression du ski sur la neige est déterminée principalement par la structure interne du ski, et par le mode d'assemblage des éléments de fixation au ski, c'est-à-dire avec ou sans lame de liaison entre les éléments avant et arrière. La répartition de pression peut aussi être influencée par l'intensité de poussée que l'on donne au ressort de recul.For skis that are currently on the market, the pressure distribution of the ski on the snow is determined mainly by the internal structure of the ski, and by the method of assembling the elements binding to the ski, that is to say with or without connecting blade between the front and rear elements. The pressure distribution can also be influenced by the thrust intensity given to the spring step back.

Il existe des dispositifs avec pièce rapportée qui permettent de modifier la répartition de pression du ski sur la neige. Ainsi, la demande de brevet européen n° 183 586 décrit une lame en matériau élastique rapportée au-dessus du ski, entre les éléments de fixation et le ski. Cette lame présente, au niveau de son extrémité avant et de son extrémité arrière, des curseurs par lesquels transite verticalement une partie des efforts auquel le ski est soumis. Ce dispositif présente toutefois l'inconvénient d'avoir des performances modestes, pour un encombrement important. Il est adapté pour le cas où les deux pieds du skieur sont en appui pour le même ski, pour éviter que tout le poids du skieur soit concentré dans la zone du patin. Par contre, il serait mal adapté dans le cas d'une paire de skis traditionnels.
On connaít d'après la demande de brevet publiée sous le numéro EP 409 749 un dispositif interface comprenant une plaque qui s'étend au-dessus du ski entre deux butées solidaires du ski. Un bloc amortisseur est interposé entre chaque extrémité de la plaque et la butée en regard. Selon un mode particulier de réalisation, une vis et, le cas échéant, un ressort exercent une précontrainte longitudinale sur la plaque.There are devices with attached parts which make it possible to modify the pressure distribution of the ski on snow. Thus, European patent application No. 183 586 describes a blade of elastic material attached above the ski, between the binding elements and the ski. This blade has, at its front end and its rear end, sliders through which a portion of the forces to which the ski is subjected passes vertically. This device however has the disadvantage of having modest performance, for a large size. It is suitable for the case where both feet of the skier are in support for the same ski, to avoid that the whole weight of the skier is concentrated in the skate area. On the other hand, it would be ill-suited in the case of a pair of traditional skis.
We know from the patent application published under number EP 409 749 an interface device comprising a plate which extends above the ski between two stops integral with the ski. A damper block is interposed between each end of the plate and the opposite stop. According to a particular embodiment, a screw and, where appropriate, a spring exert a longitudinal prestress on the plate.

On peut ajouter que les dispositifs actuellement connus exercent en permanence une précontrainte sur le ski. Une telle précontrainte permanente est nuisible, car elle est susceptible de provoquer à la longue une déformation irréversible du ski.It can be added that the devices currently known exert permanent prestressing on the ski. Such permanent prestressing is harmful because it is likely to cause the long irreversible deformation of the ski.

Un des buts de la présente invention est de proposer un dispositif qui remédie à ces inconvénients, et qui permet de précontraindre de manière réglable le ski en avant et en arrière de la zone du patin.One of the aims of the present invention is to propose a device which overcomes these drawbacks, and which allows the ski to be preloaded in an adjustable manner in front and behind the skate area.

La demande de brevet français publiée sous le numéro FR 2 513 132 décrit quant à elle un frein dont la pédale d'actionnement comprend deux leviers articulés entre eux à leur extrémité adjacente. L'un des leviers est en outre articulé à une embase solidaire du ski. L'autre lever porte des bras de frein, et il est relié à l'embase au niveau d'une lumière orientée de façon longitudinale. Un ressort exerce une force de rappel sur l'extrémité mobile de ce lever, qui tend à replier les deux leviers l'un contre l'autre.The French patent application published under the number FR 2 513 132 describes a brake the actuation pedal of which comprises two levers hinged together at their adjacent end. One of the levers is also articulated to a base secured to the ski. The other lift carries arms of brake, and it is connected to the base at a light oriented longitudinally. A spring exerts a restoring force on the movable end of this lever, which tends to fold the two levers one against each other.

Le fonctionnement de ce dispositif n'exerce aucune influence significative sur le ski. En effet, il est de dimensions relativement petites, en outre tous les efforts longitudinaux sont transmis par réaction à une pièce unique, c'est-à-dire l'embase. De ce fait, ces efforts n'affectent pas la structure du ski.The operation of this device has no significant influence on skiing. Indeed, it is of relatively small dimensions, in addition all the longitudinal forces are transmitted by reaction to a single piece, that is to say the base. Therefore, these efforts do not affect the structure of the ski.

Un autre but de la présente invention est de proposer un dispositif qui présente un encombrement réduit.Another object of the present invention is to provide a device which has a space requirement reduced.

Un autre but de la présente invention est de proposer un dispositif qui n'influence que de manière modérée la flexibilité du patin lors des flexions de ski.Another object of the present invention is to provide a device which only influences so moderate flexibility of the skate during ski flexions.

Un autre but de la présente invention est de proposer un dispositif qui génère sur le ski une contrainte de flexion uniquement lorsque le ski est utilisé.Another object of the present invention is to provide a device which generates on the ski a bending stress only when the ski is used.

D'autres buts et avantages de l'invention apparaítront au cours de la description qui va suivre, cette description étant toutefois donnée à titre indicatif, et non limitatif.Other objects and advantages of the invention will become apparent during the description which follows, this description being however given as an indication, and not limiting.

Le dispositif selon l'invention vise à modifier la répartition naturelle de pression d'un ski tel que notamment un ski alpin sur sa surface de glisse, le ski étant prévu pour être utilisé avec une chaussure. Le dispositif comprend une plaque de base avant et une plaque de base arrière prévues pour être solidarisées au ski dans sa zone centrale, chacune des plaques de base présentant un embout surélevé par rapport à la surface supérieure du ski, un organe de raidissement longiligne incompressible qui est prévu pour s'étendre au-dessus de la surface supérieure du ski, les extrémités de l'organe de raidissement étant en appui contre les embouts des plaques de base.The device according to the invention aims to modify the natural pressure distribution of a ski such that in particular an alpine ski on its sliding surface, the ski being intended to be used with a shoe. The device comprises a front base plate and a rear base plate provided to be joined to the ski in its central area, each of the base plates having a tip raised relative to the upper surface of the ski, a slender stiffening member incompressible which is intended to extend above the upper surface of the ski, the ends of the stiffening member being in abutment against the ends of the base plates.

Il est caractérisé par le fait qu'une zone centrale de l'organe de raidissement est instable et déformable selon une direction verticale par flambage ou repliement de leviers,

  • qu'une pédale mobile verticalement située au niveau de la zone centrale est prévue pour recevoir la semelle de chaussure,
  • que la pédale est mobile entre une position basse où elle force la zone centrale de l'organe de raidissement à s'aplatir de façon à générer dans l'organe de raidissement une contrainte de compression qui est transmise par réaction aux embouts des plaques de base, et une position haute où elle libère la zone centrale de l'organe de raidissement de façon à annuler ladite contrainte de compression, et
  • qu'un ressort de rappel appelle de façon élastique la pédale dans sa positon haute.
    • It is characterized by the fact that a central zone of the stiffening member is unstable and deformable in a vertical direction by buckling or folding of levers,
  • a vertically movable pedal situated at the level of the central zone is provided for receiving the shoe sole,
  • that the pedal is movable between a low position where it forces the central region of the stiffening member to flatten so as to generate in the stiffening member a compressive stress which is transmitted by reaction to the ends of the base plates , and a high position where it frees the central zone of the stiffening member so as to cancel said compression stress, and
  • that a return spring resiliently calls the pedal in its upper position.

    • Le frein de ski est destiné à freiner le déplacement d'un ski en l'absence de la chaussure. Il comprend au moins un bras de frein prévu pour être monté sur le ski, et mobile entre une position de travail où le frein fait saillie sous la surface inférieure du ski, et une position de repos où le bras remonte le long des bords latéraux du ski, comprenant une genouillère d'actionnement mobile entre une position aplatie et une position repliée pour commander le déplacement du bras de frein et un ressort de rappel pour solliciter de façon élastique la genouillère dans sa position repliée correspondant à la position de travail du bras de frein. Il est caractérisé par le fait que les deux extrémités de la genouillère sont reliées aux embouts de deux plaques de base du frein, les plaques de base étant distinctes et prévues pour être assemblées directement au ski de façon distante. The ski brake is intended to brake the movement of a ski in the absence of the boot. he includes at least one brake arm designed to be mounted on the ski, and movable between a position work where the brake protrudes under the lower surface of the ski, and a rest position where the arm goes up along the side edges of the ski, comprising a movable actuating toggle between a flattened position and a folded position to control the movement of the brake arm and a spring reminder to resiliently apply the kneepad in its folded position corresponding to the working position of the brake arm. It is characterized by the fact that the two ends of the toggle are connected to the end caps of two brake base plates, the base plates being separate and designed to be assembled directly to the ski remotely.

    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 drawings in annex which form an integral part thereof.

    La figure 1 est une vue en perspective d'un ski dans sa zone du patin, équipé, par ailleurs, d'un dispositif selon une première mise en oeuvre de l'invention.Figure 1 is a perspective view of a ski in its skate area, equipped, moreover, with a device according to a first implementation of the invention.

    La figure 2 est une vue de côté du mode de réalisation représenté en figure 1.FIG. 2 is a side view of the embodiment shown in FIG. 1.

    La figure 3 est une vue de dessus de la lame de raidissement.Figure 3 is a top view of the stiffening blade.

    La figure 4 est une vue de côté du cavalier qui chevauche la lame de raidissement.Figure 4 is a side view of the rider who straddles the stiffening blade.

    La figure 5 est une vue en perspective d'une plaque de base associée à l'un des éléments de fixation.FIG. 5 is a perspective view of a base plate associated with one of the elements of fixation.

    La figure 6 est une vue partielle de côté, en coupe, qui illustre la liaison entre l'extrémité de la lame de raidissement et la plaque de base.Figure 6 is a partial side view, in section, which illustrates the connection between the end of the blade stiffening and base plate.

    La figure 7 est une vue semblable à celle de la figure 2, dans une autre position de fonctionnement du dispositif.Figure 7 is a view similar to that of Figure 2, in another operating position of the device.

    La figure 8 est une vue en perspective, dans la zone du patin, d'un ski équipé d'un dispositif selon un autre mode de mise en oeuvre de l'invention.FIG. 8 is a perspective view, in the skate area, of a ski equipped with a device according to a another embodiment of the invention.

    La figure 9 est une vue partielle de côté qui illustre le fonctionnement du dispositif présent dans la figure 8, les éléments de fixation ne sont pas représentés dans cette figure.FIG. 9 is a partial side view which illustrates the operation of the device present in the Figure 8, the fasteners are not shown in this figure.

    La figure 10 est une vue semblable à la figure 9 dans une autre position de fonctionnement.Figure 10 is a view similar to Figure 9 in another operating position.

    Les figures 11 et 12 illustrent le mode de rétraction du frein qui équipe le dispositif des figures 9 et 10.Figures 11 and 12 illustrate the mode of retraction of the brake which equips the device of Figures 9 and 10.

    La figure 13 est une vue partielle de côté, en coupe, qui illustre une variante de réalisation du dispositif représenté dans les figures 9 et 10.Figure 13 is a partial side view, in section, which illustrates an alternative embodiment of the device shown in Figures 9 and 10.

    La figure 14 représente le ressort qui équipe le dispositif de la figure 13.FIG. 14 represents the spring which equips the device of FIG. 13.

    La figure 1 représente la zone du patin d'un ski. Le ski présente dans cette zone une embase 1, sur laquelle sont montés deux éléments de fixation avant et arrière 2 et 3. Ces éléments de fixation sont de tout type approprié, et ils comprennent usuellement une mâchoire qui retient l'extrémité avant ou arrière de la chaussure, et qui est mobile contre la force de rappel d'un mécanisme de rappel élastique.Figure 1 shows the skate area of a ski. The ski has in this zone a base 1, on which are mounted two front and rear fasteners 2 and 3. These fasteners are of any suitable type, and they usually include a jaw which retains the front end or rear of the shoe, and which is movable against the restoring force of an elastic return mechanism.

    L'élément de fixation avant 2 présente, par ailleurs, une embase 6 par laquelle il est solidarisé au ski, par tout moyen approprié, et par exemple par vissage. Une plaque d'appui 4 est, par ailleurs, située dans la partie arrière de l'embase 6, et cette plaque d'appui est destinée à recevoir l'extrémité avant de la semelle de chaussure.The front fixing element 2 also has a base 6 by which it is secured to the ski, by any suitable means, and for example by screwing. A support plate 4 is, moreover, located in the rear part of the base 6, and this support plate is intended to receive the end front of the shoe sole.

    L'élément de fixation arrière 3 présente de façon connue un corps mobile le long d'une glissière 7, la glissière étant elle-même solidarisée à l'embase 1 par tout moyen approprié, par exemple par vissage. La partie avant de la glissière présente une plaque d'appui 5 qui est destinée à recevoir l'extrémité arrière de la semelle de chaussure. The rear fastening element 3 has in known manner a movable body along a slide 7, the slide itself being secured to the base 1 by any suitable means, for example by screwing. The front part of the slide has a support plate 5 which is intended to receive the end rear of the shoe sole.

    Un dispositif de freinage 9 est, par ailleurs, associé à l'élément de fixation arrière 3. Ce dispositif est d'un type connu, et il comprend en particulier au moins un, et, de préférence, deux bras de freinage 10, 11, qui sont mobiles entre une position de travail où ils font saillie sous la surface inférieure de l'embase 1 du ski, et une position de repos où ils remontent au-dessus de la surface supérieure de l'embase. Un dispositif d'actionnement 12 sensible à la présence ou à l'absence de chaussure commande, par ailleurs, le passage des bras de frein vers la position de repos, lorsque la chaussure est engagée dans les éléments de fixation. Dans l'exemple illustré, le dispositif d'actionnement est une pédale qui est reliée au bras de frein 10 et 11 par des biellettes 14, ces biellettes constituant en fait le prolongement des bras de frein 10 et 11 au-dessus de la surface supérieure de l'embase du ski. Un dispositif de rappel élastique connu assure, par ailleurs, le rappel des bras de frein dans la position de travail où ils font salle sous la surface inférieure du ski.A braking device 9 is, moreover, associated with the rear fixing element 3. This device is of a known type, and in particular it comprises at least one, and preferably two braking arms 10, 11, which are movable between a working position where they protrude below the lower surface of the base 1 of the ski, and a rest position where they rise above the upper surface of the base. An actuating device 12 sensitive to the presence or absence of shoes also controls the passage of the brake arms to the rest position when the shoe is engaged in the fasteners. In the example illustrated, the actuation device is a pedal which is connected to the brake arm 10 and 11 by links 14, these links constituting in fact the extension of the brake arms 10 and 11 above the upper surface of the ski base. A known elastic return device also ensures the return of the brake arms to the position of work where they make room under the lower surface of the ski.

    Ce dispositif de rappel élastique s'oppose élastiquement au mouvement des bras de frein de leur position de travail à leur position de repos.This elastic return device elastically opposes the movement of the brake arms of their working position to their rest position.

    Le dispositif représenté dans les figures présente, par ailleurs, un organe de raidissement constitué par une lame de raidissement 15 qui s'étend au-dessus de la surface supérieure de l'embase 1 selon une direction longitudinale. La partie centrale de la lame 15 s'étend à plat contre la surface supérieure de l'embase 1, approximativement entre l'élément de fixation avant 2 et l'élément de fixation arrière 3. Les extrémités de la lame sont surélevées par rapport à la surface supérieure de l'embase 1, et elles sont en appui selon une direction approximativement longitudinale contre des butées solidaires de l'embase. La lame exerce sur ces butées une poussée orientée vers les extrémités de l'embase.The device shown in the figures also has a stiffening member consisting by a stiffening blade 15 which extends above the upper surface of the base 1 according to a longitudinal direction. The central part of the blade 15 extends flat against the upper surface of the base 1, approximately between the front fixing element 2 and the rear fixing element 3. The ends of the blade are raised relative to the upper surface of the base 1, and they are supported in an approximately longitudinal direction against stops integral with the base. The blade exerts on these stops a thrust oriented towards the ends of the base.

    La lame 15 est incompressible selon une direction longitudinale, et elle présente, par ailleurs, des qualités de flexion élastique dans le plan vertical et longitudinal médian qu'elle définit. Elle est réalisée en tout matériau approprié, et, par exemple, en une matière composite éventuellement chargée de fibres.The blade 15 is incompressible in a longitudinal direction, and it also has elastic flexural qualities in the vertical and longitudinal median plane which it defines. It is carried out in any suitable material, and, for example, in a composite material possibly charged with fibers.

    La lame 15 qui est représentée dans les figures 1 à 7 est une seule pièce continue qui présente une épaisseur constante. La lame 15 présente deux parties, une partie avant 16 de largeur constante, et une partie arrière 17 également de largeur constante, mais supérieure à celle de la partie 16. Les deux parties 16 et 17 sont séparées par une zone d'épaulement 18. Un cavalier 20 solidaire du ski chevauche, par ailleurs, la lame 15 dans sa partie 16. Le cavalier 20 présente dans sa partie inférieure un évidement 21 dont les dimensions correspondent à celle d'une section transversale de la partie 16. Le cavalier 20 préserve la lame d'un flambage dans sa partie avant 16.The blade 15 which is shown in Figures 1 to 7 is a single continuous piece which has a constant thickness. The blade 15 has two parts, a front part 16 of constant width, and a rear part 17 also of constant width, but greater than that of part 16. The two parts 16 and 17 are separated by a shoulder zone 18. A rider 20 secured to the ski overlaps, moreover, the blade 15 in its part 16. The rider 20 has in its part lower a recess 21 whose dimensions correspond to that of a cross section of the part 16. The rider 20 preserves the blade from buckling in its front part 16.

    Les extrémités avant et arrière 22 et 23 de la lame sont en appui selon une direction approximativement longitudinale contre une butée solidaire du ski.The front and rear ends 22 and 23 of the blade are supported in a direction approximately longitudinal against a stop integral with the ski.

    La figure 5 représente une telle butée pour l'élément de fixation arrière 3 sous la forme d'une plaque de base 25, qui présente une platine 26 destinée à être intercalée entre la glissière 7 et la surface supérieure de l'embase 1. En arrière de la platine, un étrier 29 s'étend selon une direction globale inclinée, de telle façon que la partie centrale 30 de l'étrier soit surélevée par rapport à la surface supérieure de l'embase 1. Cette partie centrale 30 est percée, selon une direction longitudinale, d'un orifice taraudé 31 dans laquelle un bouchon fileté 32 est vissé à une profondeur qui peut être variable. Du côté de la lame, le bouchon 32 est équipé d'un embout 33, qui présente une encoche 34 dans laquelle l'extrémité surélevée 23 de la lame vient prendre appui selon une direction approximativement longitudinale.FIG. 5 represents such a stop for the rear fixing element 3 in the form of a base plate 25, which has a plate 26 intended to be interposed between the slide 7 and the upper surface of the base 1. Behind the plate, a stirrup 29 extends in a direction overall inclined, so that the central part 30 of the stirrup is raised relative to the upper surface of the base 1. This central part 30 is pierced in a longitudinal direction, a tapped hole 31 in which a threaded plug 32 is screwed to a depth which can be variable. On the side of the blade, the plug 32 is equipped with a tip 33, which has a notch 34 in which the raised end 23 of the blade comes to bear in a direction approximately longitudinal.

    La platine 26 présente, par ailleurs, dans sa partie inférieure, une rainure longitudinale 34 dont les dimensions correspondent à celles d'une section transversale de la partie arrière 17 de la lame.The plate 26 has, moreover, in its lower part, a longitudinal groove 34 whose dimensions correspond to those of a cross section of the rear part 17 of the blade.

    Selon une variante de réalisation non illustrée, la platine 26 est en deux parties, une partie arrière qui porte l'étrier 29, et une partie avant indépendante de la partie arrière, qui joue en fait le rôle de cale d'épaisseur.According to an alternative embodiment not shown, the plate 26 is in two parts, a rear part which carries the stirrup 29, and a front part independent of the rear part, which in fact plays the role of shim thickness.

    Au niveau de l'élément de fixation avant 2 se trouve une plaque de base 35 du même type, avec une platine 36 intercalée entre l'embase 6 de l'élément de fixation 2, et l'embase 1 du ski. De la platine 36 part vers l'avant un étrier 39, avec une partie centrale 40 qui est équipée d'un bouchon 42. L'extrémité avant 22 de la lame est en appui contre un embout 43 mobile selon une direction longitudinale avec la rotation du bouchon 42.At the front fastening element 2 is a base plate 35 of the same type, with a plate 36 interposed between the base 6 of the binding element 2, and the base 1 of the ski. Platinum 36 forwards a stirrup 39, with a central part 40 which is fitted with a plug 42. The front end 22 of the blade bears against a tip 43 movable in a direction longitudinal with the rotation of the plug 42.

    La platine 36 présente, en outre, une rainure longitudinale 44 dont les dimensions sont sensiblement les mêmes que celles d'une section transversale de la partie avant 16 de la lame.The plate 36 has, in addition, a longitudinal groove 44 whose dimensions are substantially the same as those of a cross section of the front part 16 of the blade.

    La distance entre les deux embouts 33 et 43 des plaques de base avant et arrière est sensiblement égale à la longueur de la lame 15.The distance between the two end pieces 33 and 43 of the front and rear base plates is substantially equal to the length of the blade 15.

    Ainsi, si l'on visse les bouchons 32 et 42 contre les extrémités de la lame 15, on génère dans la lame une contrainte de compression à laquelle la lame s'oppose. Cette contrainte est transmise par réaction à chacune des plaques de base 25, 35, qui à leur tour transmettent à l'embase du ski un moment de flexion qui tendrait à faire plonger l'extrémité avant et l'extrémité arrière de l'embase en direction de la neige. La contrainte de compression auquelle la lame 15 serait soumise, et donc l'intensité des moments de flexion induits peuvent être réglés au moyen des bouchons filetés 32 et 42. L'intensité des moments de flexion dépend aussi de la hauteur des extrémités 22 et 23 de la lame, par rapport à la surface supérieure de l'embase.Thus, if we screw the plugs 32 and 42 against the ends of the blade 15, we generate in the blade a compressive stress to which the blade opposes. This constraint is transmitted by reaction to each of the base plates 25, 35, which in turn transmit to the base of the ski a bending moment which would tend to plunge the front end and the rear end of the base into direction of snow. The compressive stress to which the blade 15 would be subjected, and therefore the intensity of the induced bending moments can be adjusted by means of the threaded plugs 32 and 42. The intensity of the bending moments also depends on the height of the ends 22 and 23 of the blade, by relative to the upper surface of the base.

    En se référant aux figures 1 et 2, il est visible que la partie arrière 17 de la lame 15 présente en avant de la pédale d'actionnement 12, une zone de flambage 17a, qui s'étend sensiblement entre le cavalier 20 et la partie avant de la glissière 7.Referring to Figures 1 and 2, it is visible that the rear part 17 of the blade 15 has in before the actuation pedal 12, a buckling zone 17a, which extends substantially between the jumper 20 and the front part of the slide 7.

    La zone de flambage 17a et la pédale d'actionnement 12 du dispositif de freinage sont prévus pour coopérer ensemble, c'est-à-dire que lorsque la pédale d'actionnement est entraínée vers le bas par la semelle de chaussure, elle vient faire pression sur la zone de flambage, de façon à aplatir cette zone et contraindre la lame à s'expanser contre chaque plaque de base 25, 35.The buckling zone 17a and the actuation pedal 12 of the braking device are provided for cooperate together, that is to say that when the actuation pedal is driven down by the shoe sole, it presses against the buckling area, so as to flatten this area and forcing the blade to expand against each base plate 25, 35.

    En se référant à la figure 7, une chaussure schématisée en 50 est engagée entre les éléments de fixation avant et arrière 2 et 3. La pédale d'actionnement 12 du dispositif de freinage se trouve en position basse, entre la semelle de chaussure et la zone de flambage 17a de la lame 15 qu'elle plaque contre la surface supérieure de l'embase 1. La disparition du flambage de la zone 17a, provoquée par la présence de la chaussure 50, tend à augmenter la distance entre les extrémités 22 et 23 de la lame, qui sont en appui contre les plaques de base avant et arrière 25 et 35. Ceci provoque donc dans la lame 15 une contrainte de compression, qui est transmise aux plaques de base 25 et 35, et qui induit un moment de flexion de l'extrémité avant et de l'extrémité arrière de l'embase 1.Referring to FIG. 7, a shoe shown diagrammatically at 50 is engaged between the elements of front and rear attachment 2 and 3. The actuation pedal 12 of the braking device is located low position, between the sole of the shoe and the buckling zone 17a of the blade 15 which it presses against the upper surface of the base 1. The disappearance of the buckling of the zone 17a, caused by the presence of the shoe 50, tends to increase the distance between the ends 22 and 23 of the blade, which are pressed against the front and rear base plates 25 and 35. This therefore causes in the blade 15 a compressive stress, which is transmitted to the base plates 25 and 35, and which induces a bending moment of the front end and the rear end of the base 1.

    Lorsque la chaussure quitte les éléments de fixation 2 et 3, ou bien à la suite d'une libération accidentelle, ou bien d'une libération volontaire, la pédale d'actionnement 12 remonte en position haute qui correspond à la figure 2, sous l'impulsion du ressort de rappel du frein 9, ce qui permet à la zone 17a de se déformer de nouveau par flambage. Cette déformation réduit l'action que la lame 15 exerce sur les plaques de base 25 et 35, ce qui réduit, par ailleurs, les moments de flexion auquel les extrémités avant et arrière de l'embase sont soumises.When the shoe leaves the fastening elements 2 and 3, or following a release accidental, or voluntary release, the actuation pedal 12 goes back up which corresponds to Figure 2, under the impulse of the brake return spring 9, which allows the area 17a to deform again by buckling. This deformation reduces the action that the blade 15 exerts on the base plates 25 and 35, which also reduces the bending moments at which the front and rear ends of the manifold are subject.

    Eventuellement, une cale 49 est placée entre la surface supérieure de l'embase 1 et la zone 17a de la lame, pour maintenir une amorce de flambage lorsque cette zone 1 Ta est aplatie par la pédale contre la surface supérieure de l'embase 1 du ski.Optionally, a shim 49 is placed between the upper surface of the base 1 and the area 17a of the blade, to maintain a start of buckling when this zone 1 Ta is flattened by the pedal against the upper surface of the base 1 of the ski.

    On obtient ainsi une contrainte de flexion qui est générée sur les éléments avant et arrière du ski, et qui, selon la présence ou l'absence de la chaussure, varie entre une valeur déterminée et une valeur sensiblement nulle selon le flambage ou l'aplatissement de la zone 17a par la pédale 12. La zone 17a constitue pour la lame 17 des moyens de tarage qui induisent dans la lame une contrainte de compression.This gives a bending stress which is generated on the front and rear elements of the ski, and which, depending on the presence or absence of the shoe, varies between a determined value and a value substantially zero depending on the buckling or flattening of the area 17a by the pedal 12. The area 17a constitutes for the blade 17 taring means which induce in the blade a stress of compression.

    La valeur déterminée des moments de flexion est, par ailleurs, réglable par le vissage des bouchons filetés 32 et 42 contre lesquels les extrémités 22 et 23 de la lame sont en appui. Plus les bouchons 32 et 42 sont vissés, plus la contrainte que la lame 15 exerce sur l'embase au niveau des platines 26 et 36 est forte.The determined value of the bending moments is also adjustable by screwing the threaded plugs 32 and 42 against which the ends 22 and 23 of the blade bear. More the caps 32 and 42 are screwed, plus the stress that the blade 15 exerts on the base at the decks 26 and 36 is strong.

    Le cavalier 20 peut également coopérer avec la zone d'épaulement 18 que présente la lame 15, pour que la lame induise un moment de flexion d'intensité différente vers l'avant et vers l'arrière du ski. En effet, si le cavalier 20 est placé relativement à l'épaulement 18, de telle façon que la zone d'épaulement 18 vienne au contact du cavalier 20 au cours de l'aplatissement de la zone flambée 17a, une partie de la contrainte de compression que la lame 15 exerce en direction de l'avant du ski est absorbée par le cavalier 20, et donc n'atteint pas la plaque de base 35. La lame 15 exerce donc sur la plaque de base 35 une force de poussée inférieure à celle qu'elle exerce sur la plaque de base arrière 25. Le moment de flexion induit sur l'extrémité avant du ski est ainsi inférieure au moment de flexion induit sur l'arrière.The rider 20 can also cooperate with the shoulder zone 18 presented by the blade 15, so that the blade induces a bending moment of different intensity towards the front and towards the rear of the ski. Indeed, if the jumper 20 is placed relative to the shoulder 18, so that the area shoulder 18 comes into contact with the rider 20 during the flattening of the flamed area 17a, part of the compressive stress that the blade 15 exerts towards the front of the ski is absorbed by the rider 20, and therefore does not reach the base plate 35. The blade 15 therefore exerts on the base plate 35 a lower pushing force than it exerts on the rear base plate 25. The bending moment induced on the front end of the ski is thus less than the bending moment armature on the back.

    On peut souligner qu'en jouant sur la position des bouchons 32 et 42, dans les plaques de base 25 et 35, il est possible de faire venir la zone d'épaulement 18 en butée contre le cavalier 20 plus ou moins tôt dans le mouvement d'aplatissement de la zone flambée 17a. Il est donc possible de régler indépendamment l'intensité des moments de flexion qui s'exercent sur l'avant et sur l'arrière du ski. Par contre, le flambage de la zone 17a réduit, simultanément, les moments de flexion qui s'exercent sur l'avant et sur l'arrière.It can be emphasized that by playing on the position of the plugs 32 and 42, in the base plates 25 and 35, it is possible to bring the shoulder zone 18 into abutment against the rider 20 more or less early in the flattening movement of the soaring area 17a. It is therefore possible to adjust independently the intensity of the bending moments which are exerted on the front and on the back of the ski. On the other hand, the buckling of the zone 17a simultaneously reduces the bending moments which are exerted on the front and on the back.

    En variante, la zone d'épaulement 18 pourrait être située sur la lame 15 immédiatement en arrière de la platine 36, et coopérer avec la paroi frontale de cette platine pour que la lame transmette vers l'avant un effort de poussée plus faible vers l'avant que vers l'arrière. Alternatively, the shoulder zone 18 could be located on the blade 15 immediately behind of plate 36, and cooperate with the front wall of this plate so that the blade transmits to forward a lower pushing force forward than backward.

    On peut aussi inverser le sens de la lame, c'est-à-dire avoir une largeur supérieure dans la partie arrière, et faire coopérer la zone d'épaulement avec la paroi frontale de la platine arrière 26. Dans ce cas, le moment de flexion serait plus fort vers l'avant que vers l'arrière. Tout autre moyen de butée peut aussi convenir.You can also reverse the direction of the blade, i.e. have a greater width in the part rear, and make the shoulder zone cooperate with the front wall of the rear plate 26. In this In this case, the bending moment would be stronger forwards than backwards. Any other stop means may also be suitable.

    Dans le mode de réalisation qui vient d'être décrit, il faut remarquer que seul les extrémités avant et arrière de la lame sont surélevées par rapport à la surface supérieure de l'embase 1. La partie centrale de la lame s'étend contre la surface supérieure du ski, si bien que la lame n'influence que modérément la flexion de l'embase 1 dans la zone du patin.In the embodiment which has just been described, it should be noted that only the front ends and rear of the blade are raised relative to the upper surface of the base 1. The part center of the blade extends against the upper surface of the ski, so that the blade only influences moderately the flexion of the base 1 in the skate area.

    Egalement, il faut souligner que les éléments de fixation 2 et 3 sont reliés à l'embase du ski, et non à la lame de raidissement. On garde donc un très bon contact entre l'embase 1 et la semelle de chaussure, et une très bonne transmission des sollicitations et des efforts qui transitent entre la chaussure et l'embase du ski.Also, it should be noted that the fastening elements 2 and 3 are connected to the base of the ski, and not to the stiffening blade. We therefore keep a very good contact between the base 1 and the sole of shoe, and a very good transmission of the stresses and forces which pass between the ski boot and base.

    La figure 8 illustre un autre mode de mise en oeuvre de l'invention, et plus précisément une variante de réalisation de la lame de raidissement.FIG. 8 illustrates another embodiment of the invention, and more precisely a variant of the stiffening blade.

    La figure 8 représente une embase 1, un élément de fixation avant 2 et un élément de fixation arrière 3, qui sont identiques aux éléments précédemment décrits. Egalement, chaque élément est équipé d'une plaque de base 25, 35, qui est identique aux plaques de base précédentes. Entre les plaques de base 25 et 35 s'étend un organe de raidissement 55. L'organe de raidissement 55 comprend une partie arrière 56, une partie avant 57, et une genouillère centrale 58. Les parties arrière et avant 56 et 57 sont constituées par des portions de lame qui présentent des qualités semblables à la lame 15 précédemment décrite, c'est-à-dire des qualités d'incompressibilité selon une direction longitudinale et de flexion élastique dans un plan vertical. La partie arrière 56 s'étend depuis la plaque de base 25 jusqu'en avant de l'élément de fixation 3, en passant sous la platine 26 associée à cet élément de fixation, de la même façon que ce qui a été décrit précédemment. De la même façon, la portion avant 57 s'étend depuis la plaque de base avant jusque en arrière de l'élément de fixation 2, en passant sous cet élément de fixation.FIG. 8 represents a base 1, a front fixing element 2 and a fixing element rear 3, which are identical to the elements previously described. Also, each element is equipped with a base plate 25, 35, which is identical to the previous base plates. Between the base plates 25 and 35 extends a stiffening member 55. The stiffening member 55 comprises a rear part 56, a front part 57, and a central toggle 58. The rear and front parts 56 and 57 are formed by blade portions which have qualities similar to the blade 15 previously described, that is to say qualities of incompressibility in a longitudinal direction and of elastic bending in a vertical plane. The rear part 56 extends from the base plate 25 to front of the fixing element 3, passing under the plate 26 associated with this fixing element, the same way as described above. Similarly, the front portion 57 extends from the front base plate to behind the fixing element 2, passing under this fastening element.

    Un dispositif à genouillère relie, par ailleurs, l'extrémité avant de la portion de lame arrière à l'extrémité arrière de la portion de lame avant. Le dispositif 58, dans son mode de réalisation représenté dans la figure, comprend deux leviers 59 et 60, qui s'étendent selon une direction longitudinale, et qui sont articulés entre eux autour d'un axe horizontal et transversal 61. Le lever arrière 59 est articulé à l'extrémité avant de la portion 56, autour d'un axe horizontal et transversal 62. De la même façon, le levier avant 60 est articulé autour d'un axe horizontal et transversal 63 à l'extrémité arrière de la portion de lame 57. Dans l'exemple illustré, les extrémités des portions de lame 56 et 57, auxquelles sont reliés les leviers 59 et 60, sont équipées d'une pièce d'embout 66 et 67, que traversent respectivement les axes 62 et 63.A toggle device also connects the front end of the rear blade portion to the rear end of the front blade portion. The device 58, in its embodiment shown in the figure, includes two levers 59 and 60, which extend in a direction longitudinal, and which are hinged together around a horizontal and transverse axis 61. Le lever rear 59 is articulated at the front end of the portion 56, around a horizontal and transverse axis 62. In the same way, the front lever 60 is articulated around a horizontal and transverse axis 63 to the rear end of the blade portion 57. In the example illustrated, the ends of the blade portions 56 and 57, to which the levers 59 and 60 are connected, are equipped with a tip piece 66 and 67, which cross axes 62 and 63 respectively.

    L'axe 61 qui relie les deux leviers 59 et 60 est porté par le lever 59, et il est mobile selon la direction longitudinale du lever 60 le long d'une lumière 65 qui est située dans la partie arrière de celui-ci. Le lever 60 présente, par ailleurs, dans sa partie arrière au moins un ressort qui repousse l'axe 61 de façon élastique vers l'extrémité arrière de la lumière 65. The axis 61 which connects the two levers 59 and 60 is carried by the lever 59, and it is movable according to the longitudinal direction of the lever 60 along a lumen 65 which is located in the rear part thereof. The lever 60 has, moreover, in its rear part at least one spring which pushes the axis 61 resiliently toward the rear end of the lumen 65.

    De préférence, le levier 60 se prolonge au-delà de l'axe 61 par une palette 70 qui vient couvrir le lever 59 lorsque la genouillère 58 est dans sa position aplatie. Dans cette position aplatie, une butée inférieure 71 du levier 60 empêche l'axe d'articulation 61 de passer sous l'alignement des deux autres axes 62 et 63, de telle façon que la genouillère ne se vérrouille jamais et tende en permanence a s'ouvrir sous l'effort de poussée du ressort 69. Egalement, de préférence, dans la position aplatie de la genouillère, l'extrémité avant 74 du levier 59 vient en appui contre une surface de butée 75, que le levier 60 présente juste en arrière de la lumière 65. De cette façon, dans la position aplatie de la genouillère 58, il est possible de mettre en butée l'un contre l'autre les deux leviers 59 et 60, selon une direction longitudinale.Preferably, the lever 60 is extended beyond the axis 61 by a pallet 70 which covers the lift 59 when the knee brace 58 is in its flattened position. In this flattened position, a stop lower 71 of the lever 60 prevents the hinge pin 61 from passing under the alignment of the other two axes 62 and 63, in such a way that the toggle never locks and tends permanently to open under the pushing force of the spring 69. Also, preferably, in the flattened position of the toggle, the front end 74 of the lever 59 abuts against a stop surface 75, that the lever 60 has just behind the light 65. In this way, in the flattened position of the knee pad 58, it is possible to abut one against the other the two levers 59 and 60, according to a longitudinal direction.

    Toutefois, on peut laisser à ce niveau un léger jeu. L'organe de raidissement exerce alors sur les plaques de base 25 et 35 une contrainte élastique tant qu'un jeu subsiste, puis une contrainte non élastique lorsque l'extrémité avant 74 du levier 59 vient en butée contre la surface de butée 75. L'organe de raidissement contraint alors l'embase de façon élastique dans une première phase de sa flexion et de façon non élastique ensuite.However, a slight play can be left at this level. The stiffening member then exerts on the base plates 25 and 35 an elastic stress as long as there is still play, then a stress not elastic when the front end 74 of the lever 59 abuts against the abutment surface 75. The stiffening member then constrains the base elastically in a first phase of its bending and then not elastic.

    L'ensemble qui vient d'être décrit fonctionne de la façon suivante. En l'absence de chaussure, c'est-à-dire dans la position représentée en figure 9, la genouillère 58 est rappelée élastiquement en position ouverte par le ressort 69. Lorsque la chaussure est engagée dans la fixation, la genouillère 58 est amenée dans sa position aplatie schématisée en figure 10. Dans cette position, le ressort 69 génère entre les leviers de la genouillère 58, et donc dans l'ensemble de l'organe de raidissement, une contrainte de compression qui est transmise aux plaques de base 25 et 35. Lorsque la chaussure est dégagée de la fixation, ou bien accidentellement, ou bien de façon volontaire, le ressort 69 rappelle la genouillère 58 dans la position ouverte de la figure 9, ce qui annule la contrainte de compression précédente.The assembly which has just been described operates in the following manner. In the absence of a shoe, that is to say in the position shown in Figure 9, the toggle 58 is resiliently returned to the position opened by the spring 69. When the shoe is engaged in the binding, the toggle 58 is brought into its flattened position shown diagrammatically in FIG. 10. In this position, the spring 69 generates between the levers of the toggle joint 58, and therefore throughout the stiffening member, a compressive stress which is transmitted to the base plates 25 and 35. When the shoe is released from the attachment, either accidentally or voluntarily, the spring 69 recalls the toggle 58 in the open position of FIG. 9, which cancels the compression stress former.

    La genouillère 58 constitue donc des moyens de tarage qui induisent dans l'organe de liaison 51 une contrainte de compression variable selon la présence ou l'absence de la chaussure.The toggle joint 58 therefore constitutes setting means which induce in the connecting member 51 a variable compressive stress depending on the presence or absence of the shoe.

    Il faut souligner que les plaques de base 25 et 35 sont équipées, comme le cas précédent, d'un bouchon de réglage 32 et 42. Selon le réglage de ces bouchons, l'extrémité avant 74 du lever 59 sera ou non au contact de la surface de butée 75 du levier 60 en position aplatie de la genouillère. S'il n'y a pas contact, l'organe de raidissement va générer, sur les plaques de base avant et arrière, une force de poussée qui va tendre à croítre avec les flexions de ski. Ces flexions de ski tendent, en effet, à rapprocher l'une de l'autre les deux portions 56 et 57, d'où il résulte une compression additionnelle du ressort 69.It should be emphasized that the base plates 25 and 35 are equipped, as in the previous case, with a adjustment cap 32 and 42. Depending on the adjustment of these caps, the front end 74 of the lever 59 will be or not in contact with the abutment surface 75 of the lever 60 in the flattened position of the toggle. If there is no contact, the stiffening member will generate, on the front and rear base plates, a force of thrust which will tend to increase with the ski flexes. These ski flexes tend, in fact, to bring the two portions 56 and 57 closer to each other, resulting in additional compression of the spring 69.

    S'il y a contact, l'organe de raidissement se comporte comme une lame incompressible de la même façon que ce qui a été décrit pour la lame 15.If there is contact, the stiffening member behaves like an incompressible blade of the same like what was described for blade 15.

    Egalement, il serait possible ici de faire coopérer une zone d'épaulement de l'une ou l'autre des portions 56 ou 57 semblable à la zone 18, avec la platine de l'un ou l'autre élément de fixation. La figure 8 illustre une zone d'épaulement 68 qui est susceptible de coopérer avec la face frontale de la platine 36 selon le réglage des bouchons 32 et 42. Also, it would be possible here to have a shoulder zone of one or the other of the co-operate. portions 56 or 57 similar to zone 18, with the plate of one or the other fixing element. The FIG. 8 illustrates a shoulder zone 68 which is capable of cooperating with the front face of the plate 36 according to the setting of the plugs 32 and 42.

    Selon un mode préférentiel de mise en oeuvre de cette variante, le lever 59 porte des bras de frein 80 et 81. Ces bras de frein suivent les mouvements de rotation du levier 59 autour de l'axe 62. La figure 9 représente le lever 59 en position inclinée, ce qui fait saillir les bras de frein 80 et 81 sous la surface inférieure de l'embase 1. Par contre, dans la figure 10, le lever 59 s'étend sensiblement selon une direction horizontale, et les bras de frein 80 et 81 sont ramenés au-dessus de la surface supérieure du ski.According to a preferred embodiment of this variant, the lever 59 carries brake arms 80 and 81. These brake arms follow the rotational movements of the lever 59 around the axis 62. The FIG. 9 represents the lever 59 in the inclined position, which projects the brake arms 80 and 81 under the lower surface of the base 1. On the other hand, in FIG. 10, the lever 59 extends substantially along a horizontal direction, and the brake arms 80 and 81 are brought back above the upper surface ski.

    Ainsi, la genouillère 58, lorsqu'elle est amenée dans la position aplatie, exerce deux actions différentes. D'une part, elle génère une contrainte de compression dans l'organe de raidissement 55, et d'autre part, elle ramène les bras de frein de leur position de travail à leur position de repos.Thus, the knee brace 58, when brought into the flattened position, exerts two actions different. On the one hand, it generates a compressive stress in the stiffening member 55, and on the other hand, it brings the brake arms back from their working position to their rest position.

    De préférence, dans la position de repos, des moyens provoquent, par ailleurs, la rétraction du frein, c'est-à-dire le rapprochement des bras 80 et 81 vers l'axe longitudinal du ski. En se référant aux figures 11 et 12, le lever 59 est construit à la manière d'un carter creux, à l'intérieur duquel les bras de frein 80 et 81 pénètrent par des segments transversaux 80a, 81a, puis ressortent par deux segments 80c et 81c, sensiblement dans l'alignement l'un de l'autre, qui constituent l'axe 61 horizontal et transversal précédemment décrit. Cet axe parcourt la lumière 65 du lever 60.Preferably, in the rest position, means also cause the retraction of the brake, that is to say the bringing together of the arms 80 and 81 towards the longitudinal axis of the ski. Referring to Figures 11 and 12, the lever 59 is constructed in the manner of a hollow casing, inside which the arms brake 80 and 81 penetrate by transverse segments 80a, 81a, then exit by two segments 80c and 81c, substantially in alignment with each other, which constitute the horizontal axis 61 and transverse previously described. This axis runs through the light 65 of sunrise 60.

    Les bras de frein 80 et 81 sont mobiles dans le plan défini par le carter 59, et ils sont maintenus au niveau des ouvertures latérales qu'ils traversent, ainsi que par deux pots centraux 83 et 84. Le ressort 69 précédemment décrit est dédoublé, et chaque élément appuie sur un segment 80c, 81c, des bras 80 et 81. La figure 11 correspond à la position ouverte de la genouillère, et dans cette position les ressorts 69 sollicitent élastiquement les bras de frein 80 et 81 à l'écartement.The brake arms 80 and 81 are movable in the plane defined by the casing 59, and they are held at the level of the lateral openings which they pass through, as well as by two central pots 83 and 84. The spring 69 previously described is split, and each element presses on a segment 80c, 81c, arms 80 and 81. FIG. 11 corresponds to the open position of the toggle joint, and in this position the springs 69 elastically stress the brake arms 80 and 81 at the spacing.

    La figure 12 correspond à la position aplatie de la genouillère. Dans cette position, les extrémités des segments 80c et 81c viennent en butée dans la partie avant de la lumière 65, ce qui force les bras de frein 80 et 81 à se rapprocher de l'axe longitudinal du ski.Figure 12 corresponds to the flattened position of the toggle. In this position, the ends segments 80c and 81c abut in the front part of the lumen 65, which forces the arms brake 80 and 81 to approach the longitudinal axis of the ski.

    La figure 13 illustre une variante de réalisation selon laquelle le ressort de poussée 69 est remplacé par un ressort de torsion 90. Dans cette figure, les deux leviers 91 et 92 sont articulés entre eux autour d'un axe 93. Le ressort 90 présente deux enroulements coaxiaux à l'axe d'articulation 93, une boucle centrale 94 qui est en appui contre les segments 80c et 81c des bras de [rein, et deux extrémités libres 95 et 96 qui sont, quant à elles, en appui contre le lever 60. Comme dans le cas précédent, l'axe 93 est mobile le long d'une lumière 98 du levier 91.FIG. 13 illustrates an alternative embodiment according to which the thrust spring 69 is replaced by a torsion spring 90. In this figure, the two levers 91 and 92 are hinged together about an axis 93. The spring 90 has two windings coaxial with the articulation axis 93, one central loop 94 which bears against the segments 80c and 81c of the arms of the kidney, and two free ends 95 and 96 which, in turn, bear against the lever 60. As in the case previous, the axis 93 is movable along a lumen 98 of the lever 91.

    Cette construction fonctionne de la même façon que la construction précédemment décrite, mis à part le fait que le ressort 90 sollicite la genouillère à l'ouverture, quelle que soit la position de l'axe 93 par rapport aux deux autres axes qui relient les leviers au reste de l'organe de raidissement.This construction works in the same way as the previously described construction, except apart from the fact that the spring 90 urges the toggle joint at the opening, whatever the position of the axis 93 compared to the two other axes which connect the levers to the rest of the stiffening member.

    Le fonctionnement de cette variante est semblable à celui du mode de réalisation qui a été précédemment décrit.The operation of this variant is similar to that of the embodiment which has been previously described.

    Naturellement, la présente description n'est donnée qu'à titre indicatif, et l'on pourrait adopter d'autres mises en oeuvre de l'invention dans le cadre des revendications.Naturally, this description is given for information only, and we could adopt other implementations of the invention within the scope of the claims.

    En particulier, les différents modes de réalisation qui viennent d'être décrits pourraient être destinés à adapter les constructions à des chaussures de longueur différente.In particular, the various embodiments which have just been described could be intended to adapt constructions to shoes of different length.

    Claims (18)

    1. Device for modifying the natural pressure distribution of a ski, such as especially an alpine ski, over its gliding surface, the ski being provided to be used with a boot, the device including a front base plate (25) and a rear base plate (35) provided to be affixed to the ski in its central zone, each of the base plates having a joining Piece (33) raised with respect to the upper surface of the ski, a long incompressible stiffening member (15, 55) which is adapted to extend above the upper surface of the ski, the ends of the stiffening member being supported against the joining pieces of the base plates,
         characterized in that a central zone (17a, 58) of the stiffening member is non-stable and deformable along a vertical direction by buckling or folding of the levers,
         wherein a vertically movable pedal (12, 70) located at the level of the central zone is provided to receive the sole of the boot,
         wherein the pedal is movable between a lowered position where it forces the central zone of the stiffening member to flatten so as to generate, in the stiffening member, a compression stress that is transmitted by reaction to the joining pieces of the base plates, and a raised position where it releases the central zone of the stiffening member so as to eliminate said compression stress, and
         wherein a return spring (9, 69, 90) elastically returns the pedal to its raised position.
    2. Device according to claim 1, characterized in that the central zone of the stiffening member(55) includes two levers (59, 60) journaled with respect to one another about a horizontal and transverse axis (61) in the manner of a non-stable toggle joint, wherein the free end of each lever (59, 60) is journaled to the remainder of the compression member about a horizontal and transverse axis (62, 63).
    3. Device according to claim 2, characterized in that the movable pedal is a pallet (70) which extends one (60) of the levers of the toggle joint.
    4. Device according to claim 3, characterized in that in the flattened position of the toggle joint, the two levers (50, 60) are in support against one another along a longitudinal direction.
    5. Device according to claim 3, characterized in that the journal axis (61) of the two levers is borne by the end of a lever (59), and wherein it is movable at the adjacent end of the other lever (60), where it is slidably mounted along a slot (65) oriented along the longitudinal direction of the lever, and wherein at least one spring (69) elastically returns the axis (62) towards the end of the slot to return the toggle joint towards its open position.
    6. Device according to claim 3, characterized in that one (59) of the two levers (59, 60) bears at least one braking arm (80, 81).
    7. Device according to claim 6, characterized by the fact that one (59) of the levers is a housing which bears the braking arms (80, 81) and which, in its rotational movement, drives the arms between two positions, one working position where the arms project downwardly, and one resting position where the arms ascend in the horizontal position.
    8. Device according to claim 1, characterized by the fact that the stiffening member is a continuous, flexible and non-compressible stiffening blade (15), and wherein the central zone of the stiffening member is a zone (17a) where the blade deforms naturally by buckling.
    9. Device according to claim 8, characterized in that the pedal (12) is the pedal for activating a braking retention device provided to be associated with a rear binding element (3).
    10. Device according to any of the preceding claims, characterized in that an abutment (20, 36) adapted to be affixed to the ski cooperates with a complimentary abutment means (18, 68) of the stiffening blade to limit the compression stress exerted by the stiffening member (15,55) towards one of the base plates (25, 35).
    11. Device according to claim 10, characterized in that the abutment adapted to be affixed to the base is a limit stop (20) that straddles the stiffening member (15), and wherein the abutment means of the blade is a shoulder (18) which provides the blade with a greater width than that of the opening (21) of the limit stop.
    12. Device according to claim 11, characterized in that the limit stop is the plate (36) of the base plate (35) associated with one of the binding means, and wherein the abutment means is a shoulder zone (68) of a portion (57) of the stiffening member whose width is greater than that of the opening (44) of the plate.
    13. Device according to claim 1, characterized in that longitudinal adjustment means (32, 42) are provided to adjust the longitudinal position of the joining pieces (33) of the base plates (25, 35) against which the ends of the stiffening member are in support.
    14. Ski brake, adapted to brake the displacement of a ski in the absence of the boot, including at least one braking arm (80, 81) adapted to be mounted on the ski, and movable between a working position where the brake projects beneath the lower surface of the ski, and a resting position where the arm rises along the lateral edges of the ski, including an activation toggle joint (58) movable between a flattened position and a folded position to control the displacement of the braking arm (80, 81), and a return spring to elastically bias the toggle joint in its folded position corresponding to the working position of the braking arm, characterized in that the two ends of the toggle joint are connected to the joining pieces of the two base plates (25, 35) of the brake, the base plates being distinct and adapted to be directly and remotely assembled to the ski.
    15. Ski brake according to claim 14, characterized in that the activation toggle joint includes a set of two levers (59, 60) journaled with respect to one another about a longitudinal and transverse axis (61), and wherein one (59) of the levers bears the braking arms (80, 81).
    16. Ski brake according to claim 15, characterized in that the levers (59, 60) have means (80c, 81c, 65) for bringing the braking arms (80, 81) closer to the longitudinal axis of the base (1) when the braking arms are brought back to their resting position by the boot.
    17. Ski, especially a ski adapted for alpine skiing, including a base (1) on which is mounted at least one binding element (3, 4) adapted to retain a boot, characterized in that it further has a device according to any of claims 1 to 13, adapted to distribute the pressure that the base exerts on the snow.
    18. Ski, especially a ski intended for alpine skiing, including a base (1) on which is mounted at least one binding element (3, 4), adapted to retain a boot, characterized in that it further has a ski brake according to any of claims 14 to 16, adapted to brake the ski in case the boot retained by the binding elements is released.
    EP93901793A 1992-02-18 1992-11-23 Device for modifying the natural distribution of a ski on its sliding surface and ski brake Expired - Lifetime EP0626873B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    FR9201959 1992-02-18
    FR9201959A FR2687326B1 (en) 1992-02-18 1992-02-18 DEVICE FOR MODIFYING THE NATURAL DISTRIBUTION OF A SKI ON ITS SLIDING SURFACE, AND SKI EQUIPPED WITH SUCH A DEVICE.
    PCT/FR1992/001082 WO1993015797A1 (en) 1992-02-18 1992-11-23 Device for modifying the natural distribution of a ski on its sliding surface

    Publications (2)

    Publication Number Publication Date
    EP0626873A1 EP0626873A1 (en) 1994-12-07
    EP0626873B1 true EP0626873B1 (en) 1998-01-21

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP93901793A Expired - Lifetime EP0626873B1 (en) 1992-02-18 1992-11-23 Device for modifying the natural distribution of a ski on its sliding surface and ski brake

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    US (1) US5730457A (en)
    EP (1) EP0626873B1 (en)
    JP (1) JPH07506016A (en)
    AT (1) ATE162410T1 (en)
    DE (1) DE69224213T2 (en)
    FR (1) FR2687326B1 (en)
    WO (1) WO1993015797A1 (en)

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    FR2687326B1 (en) * 1992-02-18 1995-09-29 Salomon Sa DEVICE FOR MODIFYING THE NATURAL DISTRIBUTION OF A SKI ON ITS SLIDING SURFACE, AND SKI EQUIPPED WITH SUCH A DEVICE.
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    FR2719781B1 (en) * 1994-05-16 1996-07-12 Salomon Sa Interface device aimed at modifying the natural pressure distribution of a ski such as in particular an alpine ski.
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    Also Published As

    Publication number Publication date
    DE69224213T2 (en) 1998-08-13
    FR2687326B1 (en) 1995-09-29
    US5730457A (en) 1998-03-24
    FR2687326A1 (en) 1993-08-20
    DE69224213D1 (en) 1998-02-26
    JPH07506016A (en) 1995-07-06
    WO1993015797A1 (en) 1993-08-19
    EP0626873A1 (en) 1994-12-07
    ATE162410T1 (en) 1998-02-15

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