EP0780143B1 - Gleitbrett mit Versteifungsvorrichtung - Google Patents

Gleitbrett mit Versteifungsvorrichtung Download PDF

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Publication number
EP0780143B1
EP0780143B1 EP96420344A EP96420344A EP0780143B1 EP 0780143 B1 EP0780143 B1 EP 0780143B1 EP 96420344 A EP96420344 A EP 96420344A EP 96420344 A EP96420344 A EP 96420344A EP 0780143 B1 EP0780143 B1 EP 0780143B1
Authority
EP
European Patent Office
Prior art keywords
board
platform
upper face
gliding
ski
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96420344A
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English (en)
French (fr)
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EP0780143A1 (de
Inventor
Denis Mantel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Skis Rossignol SA
Original Assignee
Skis Rossignol SA
Rossignol SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Publication of EP0780143A1 publication Critical patent/EP0780143A1/de
Application granted granted Critical
Publication of EP0780143B1 publication Critical patent/EP0780143B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/003—Non-swivel sole plate fixed on the ski
    • 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
    • A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/007—Systems preventing accumulation of forces on the binding when the ski is bending

Definitions

  • the invention relates to the field of snow sliding sports. It aims more particularly gliding boards equipped with a device interposed between the fixing and the top of the board allowing to adapt, interactively, the characteristics of the board at different positions and strengths of impulses observed during the practice of sport, especially during the making a turn.
  • the invention aims in particular to optimize the behavior of a ski during the making a turn, you should first specify the different phases and the position of the forces transmitted by the skier to the ski during a turn. Very schematically, we can break down a turn into three essential phases, know how to initiate, drive and exit the turn.
  • the skier During the initiation phase of the turn, the skier carries his weight from body inward of the turn and forward. The ski must then bend to inscribe its internal edge in a curve. To decrease the radius of curvature by this trajectory, the impulse of the skier, that is to say the force he exerts on the ski must be larger than when making a long radius turn. We observed that the impulse exerted can reach a force corresponding to five to eight times the weight of the skier. To facilitate the curvature of the ski during this phase of trigger, the ski must be flexible enough and the application of the skier's load on the ski is practically punctual, in order to obtain a short skiing behavior.
  • the skier's position decreases by so that the weight of his body is applied practically at the middle level of the shoe.
  • the ski maintains its radius of curvature.
  • the skier shifts his body weight backwards, so the support area of the skier on the ski moves in the direction of the heels of the shoes.
  • the skier's weight must be distributed over the maximum length ski.
  • the ski should behave like a short and very flexible ski when starting and driving the turn, then transform it into a long and stiff ski for the driving phase.
  • the problem which the invention proposes to solve is to provide a ski whose the stiffness changes dynamically during the different phases of the turn.
  • the goal sought is to give the ski a behavior equivalent to that of a short ski and flexible during forward presses at the start of a turn, and alternatively behavior of a long and stiff ski during the back supports present for the phase end of the turn.
  • the invention relates to a sliding board, namely for example an alpine ski, a cross-country ski, a monoski or a snowboard, having a lower face of slides and an upper face intended to receive in the skate area, a fixing able to secure the user's shoe to the board, the board being equipped at the level of the pad of a stiffening device intended to modify the stiffness of the board under the effect of a push exerted by the user towards the upper face of the board.
  • the board receives a platform interposed between the fixing and the top of the board, this platform acting on the board to generate different behavior depending on whether the user supports are located forward or backward. So when the supports are directed towards the front, the platform serves as a simple raising intermediary and transmits the efforts on the one hand, via the front fulcrum and on the other hand, via the intermediate stud located substantially at the level of the arch of the shoe. The burden of skier is thus distributed over a short area and could be assimilated to a load punctual.
  • the platform transmits, in addition to a load perpendicular to the sole, two opposite longitudinal components resulting in tensioning of the ski between the two support points of these components, and therefore a increased ski stiffness in this area. So in this phase, the load of the skier is then distributed over a relatively longer area than during from the previous phase.
  • the intermediate stud it must be rigid for constitute a support area for the platform.
  • this is integral with the upper face of the board and the face bottom of the platform slides on the upper face of the stud.
  • the stud is integral with the underside of the platform and the lower face of the stud can slide on the upper face of the board. Typically, it is located substantially at the middle of the shoe, that is to say in the border area between the front and rear supports.
  • the whole intermediate comprises means for adjusting the longitudinal position of the stud in relation to the board and / or the platform.
  • the means intended to banding part of the board consist of a set of cam surfaces arranged respectively under the underside of the platform and on the face top of the board, said cam surfaces being oriented downwards and towards the front of the board, so as to cause the support point to spread the front of the platform (A) relative to the fulcrum of the cams (B), under the effect a thrust perpendicular to the surface of the board, exerted in the area back of the platform.
  • the facing cam surfaces slide one relative to each other, which causes, given their inclination and the rigidity of the platform, the slight separation of the cam anchor point integral with the ski (B) relative to the fulcrum of the front end of the platform (A). In this way, the skate area of the ski is bandaged or stretched thanks to the platform.
  • cam surfaces therefore have the function of transforming the displacement vertical generated by the impulse given by the skier at the time of initiation of the turn into horizontal components generating tension under the skate. This pushing effort therefore results in an increase in stiffness initial skiing in the skate area and therefore a longer skiing feeling because the load is distributed over the length of the shoe.
  • At least one of the cam surfaces is consisting of an inclined slope whose inclination relative to the upper face of the board is between 30 and 60 degrees, more precisely in the vicinity of 45 degrees.
  • one of the cam surfaces consists of a cylindrical roller with an axis of revolution perpendicular to the plane longitudinal median of the board.
  • this roller is rotatably mounted by relative to its axis of revolution to reduce the effects of friction. Otherwise, always to reduce friction phenomena, the cam surfaces in manhole are covered with a coating intended to reduce the coefficient of friction, typically a layer of polytetrafluoroethylene.
  • the stiffening device includes a stop capable of limiting the displacement of the rear end of the platform up and back.
  • a stop capable of limiting the displacement of the rear end of the platform up and back.
  • the stiffening device comprises a strip of visco-elastic material interposed between said stop and the end rear of the platform, to cushion these displacements.
  • an elastic return element can be housed under the part back of the platform, between the top of the board and the bottom of the platform.
  • This elastic element can be a mechanical spring (coil or blade) or a stud made of elastic material (rubber for example).
  • the plate constituting the platform must be rigid enough to transmit, without buckling, the longitudinal forces intended to tighten the skid area of the board.
  • This plate can be either metallic or made of composite material reinforced with glass fibers, carbon or Kevlar ®, either in plastic material armed.
  • the means intended for bandaging part of the board consist of an arm located at the rear of the platform whose front end is articulated at the rear of the platform, the rear end of the arm supported by a fixed point on the upper face of the board, and pushing it away, under the effect of a vertical thrust exerted in the rear area of the platform.
  • the fixed fulcrum of the rear end of the arm can be either a notch located in the upper part of the ski, either a stop made or attached to the ski.
  • the platform has an articulated rear extension of so that, during rear support, the part of the platform located between the stud intermediate and its rear end flexes, which has the effect of opening the angle a formed by the end of the platform and the arm, and hence to separate said fixed point (A) corresponding to the front end of the platform, from the rear fixed point (C) linked at the upper surface of the ski, which causes the area to be tensioned skate.
  • the rear end of said arm is articulated on the upper face of the board, in particular by means of an intermediate piece.
  • the means intended to bandage a part of the ski also include a second arm forming a compass with the first, the front end of this second arm resting on a second fixed point (D) of the upper face of the board, these two fixed points being distant from each other under the effect of a vertical thrust exerted in the area back of the platform.
  • D second fixed point
  • the rear part of the platform rests on a compass forming a flying buttress which causes, when it is crushed during rear support phases, tensioning the skate area between the points supports (C) and (D).
  • Figure 1 is a side view of a first embodiment of the invention shown in the rest position.
  • FIG. 2 is a side view of the same embodiment shown during of front supports.
  • Figure 3 is a side view of the same device shown when pressed back.
  • Figure 4 is a side view of a first alternative embodiment of the invention.
  • Figure 5 is a side view of another variant concerning the joint front of the platform.
  • Figure 6 is a side view illustrating an alternative embodiment in which one of the cam surfaces is produced by a roller.
  • Figure 7 is a side view of a second embodiment of the invention shown in rest position.
  • Figure 8 is a side view of the same device shown when pressed back.
  • Figures 9 and 10 are side views of a third embodiment of the invention in two different forms.
  • the invention relates to a gliding board, in particular a ski, which includes a device allowing the stiffening of said ski as a function of the front or rear position of the thrust exerted by the skier.
  • a gliding board in particular a ski
  • the invention includes a device allowing the stiffening of said ski as a function of the front or rear position of the thrust exerted by the skier.
  • the invention comes in the form a platform (2) intended to receive at the front, the stop (3) and at the rear, the heel piece (4) for fixing the shoe and which is placed substantially at the level of the ski skate area (1).
  • the invention relates to a gliding board, but it will be described below in detail for its application to alpine skiing.
  • the intermediate stiffener according to the invention is in the form of an elongated platform (2) which sees its front end (10) secured to the upper face (5) of the ski (1), by means of the appropriate curvatures (11).
  • the platform (2) present in its median zone, substantially at the level of the middle of the shoe, a rigid intermediate pad (12), interposed between the platform (2) and the upper face (5) of the ski.
  • this stud (12) can be fixed on the upper face (5) of the ski and support the sliding of the face platform, or vice versa.
  • this stud (12) it is possible to adjust the position longitudinal of this stud (12) as a function of: the total length of the platform (2), its position on the ski, the position of the bindings on the platform, and the front / rear distribution of supports (F1, F2).
  • the lower face (13) of the platform (2) receives, in the rear zone, a wedge (14) which has a sloping face (15) oriented forward and downward.
  • This sloping shim (14) is opposite a second sloping shim (16), fixed on the upper face of the ski. Symmetrically, the slope (17) of this second wedge (16) is also oriented towards the bottom and towards the front of the ski.
  • the upper face (5) of the ski receives a stop (20) forming an angle whose horizontal branch (21) covers the rear end (22) of the platform (2) so limit the travel upwards.
  • the distance (e 1 ) between the upper face of the platform (2) and the branch horizontal (21) of the square is 2 millimeters, while the front face (24) of the vertical branch (23) of the square is distant (d 1 ) by about 5 millimeters from the rear end (22 ) of the platform (2).
  • the end front (10) of the platform (2) is articulated on an intermediate piece (18) itself fixed on the upper face of the ski (see figure 4).
  • the front end of the platform has vertical extensions (25) which are articulated directly on the board, especially at the edges of it.
  • the invention is not limited to the cam surfaces described in FIGS. 1 to 5 but these can of course take any other advantageous form, in particular that of a cylindrical roller (26) rolling on a cam 16, as illustrated in Figure 6.
  • cam surfaces in contact can advantageously be covered with a surface facilitating sliding and reducing the coefficient of friction.
  • a stud (29) made of elastic material allowing the device to return to its initial position.
  • the front part of the platform (2) rests on its articulation at the front (10), and on the intermediate stud (12) in the middle part.
  • the front supports (F1) are transmitted by these two connecting zones (10, 12) of the platform (2) towards the ski (1).
  • the rear part of the platform (2) sees the two sloping wedges (14, 16) sliding relative to each other.
  • the stiffness of the platform (2) causes tension between points (A) and (B) corresponding to a bandage of the ski skate area.
  • the stiffness of the platform (2) which of course is associated with the stiffness of the shoe, comes add to the stiffness of the ski (1) in the skate area. So the behavior of the board corresponds to that of a longer ski, which allows, as expected, a better stability at the end of the turn.
  • FIGS 7 and 8 illustrate an embodiment of the invention in which the platform has in its rear area a hinge (30) with an arm (31) forming a rearward extension.
  • the rear part (32) of this arm comes to bear on a transverse stop (33) integral with the upper face (5) of the ski.
  • a transverse stop (33) integral with the upper face (5) of the ski.
  • FIG. 9 shows a platform (2) under the rear area (45) of which an arc is arranged (40) formed by a spring leaf.
  • the front (41) and rear (42) ends of this leaf spring (40) come to bear on two transverse stops (43, 44) arranged respectively in front and behind these ends.
  • the implanted intermediate stiffening device on the gliding boards according to the invention advantageously makes it possible to dynamically change the stiffness of the ski according to the variation of the position of the skier's supports.
  • the ski when the turns are initiated, when the supports are located at the front, the ski retains its natural flexibility. However, at the end of turns, when the supports are oriented more towards the rear of the ski, the device according to the invention allows the ski skid to be energized, therefore its stiffening.

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Claims (18)

  1. Gleitbrett (1) mit einer unteren Gleitfläche und einer oberen Fläche (5), welche dazu vorgesehen ist, in der Gleitzone eine Bindung (3, 4) aufzunehmen, die zur festen Verbindung des Schuhs des Benutzers mit dem Brett (1) geeignet ist, wobei das Brett (1) in der Gleitzone mit einer Versteifungsvorrichtung ausgerüstet ist, welche zur Veränderung der Steifigkeit des Brettes unter der Einwirkung einer durch den Benutzer auf die obere Fläche des Brettes ausgeübten Druckkraft bestimmt ist, dadurch gekennzeichnet, daß die Versteifungsvorrichtung folgendes umfaßt:
    eine obere, längliche Plattform (2), die zur Aufnahme der Bindung (3, 4) auf ihrer oberen Fläche vorgesehen ist, wobei das vordere Ende (10) der genannten Plattform fest mit einem an der Struktur (5) des Brettes befestigten Punkt verbunden ist;
    einen starren, unverformbaren Zwischenklotz (12) mit fester Höhe, der zwischen der unteren Fläche der Plattform (2) und der oberen Fläche (5) des Brettes angeordnet ist;
    Mittel zum Spannen zumindest eines Teils des Brettes (1) unter der Wirkung einer vertikalen Druckkraft (F2), welche auf die hintere Zone der Plattform (2) ausgeübt wird.
  2. Gleitbrett nach Anspruch 1, dadurch gekennzeichnet, daß das vordere Ende (10) der Plattform auf der oberen Fläche des Skis befestigt ist.
  3. Gleitbrett nach Anspruch 1, dadurch gekennzeichnet, daß das vordere Ende (10) der Plattform gelenkig bezüglich der oberen Fläche des Skis befestigt ist.
  4. Gleitbrett nach Anspruch 1, dadurch gekennzeichnet, daß der starre Klotz (12) fest mit der oberen Fläche (5) des Brettes verbunden ist und daß die untere Fläche der Plattform auf der oberen Fläche des Klotzes (12) gleiten kann.
  5. Gleitbrett nach Anspruch 1, dadurch gekennzeichnet, daß der Klotz (12) fest mit der unteren Fläche der Plattform verbunden ist und daß die untere Fläche des Klotzes (12) auf der oberen Fläche (5) des Brettes gleiten kann.
  6. Gleitbrett nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß es Mittel zur Einstellung der Längsposition des Klotzes bezüglich des Brettes und/oder der Plattform aufweist.
  7. Gleitbrett nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Zwischenklotz (12) im wesentlichen im Bereich der Mitte des Schuhs des Benutzers angeordnet ist.
  8. Gleitbrett nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß es ein elastisches Rückstellelement (29) aufweist, welches zwischen die obere Fläche des Brettes und die untere Fläche der Plattform hinter dem Bereich des Zwischenklotzes (12) eingefügt ist.
  9. Gleitbrett nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Mittel zum Spannen eines Teils des Brettes aus einem Satz Vorsprünge (14, 16) gebildet wird, die einerseits unterhalb der unteren Fläche der Plattform (2) und andererseits auf der oberen Fläche (5) des Brettes angeordnet sind, wobei die genannten Vorsprünge Flächen (15, 17) aufweisen, die nach unten und zum vorderen Bereich des Brettes hin gerichtet sind, um ein Entfernen des Stützpunktes des vorderen Bereiches (10) der Plattform (Punkt A) bezüglich des Stützpunktes der Vorsprünge (Punkt B) unter der Wirkung einer senkrecht auf die Oberfläche des Brettes wirkenden, auf den hinteren Bereich der Plattform ausgeübten Druckkraft zu bewirken.
  10. Gleitbrett nach Anspruch 9, dadurch gekennzeichnet, daß mindestens einer der Vorsprünge (14, 16) von einer geneigten Schräge (15, 17) gebildet wird.
  11. Gleitbrett nach Anspruch 9, dadurch gekennzeichnet, daß die Neigung der geneigten Schräge (15, 17) bezüglich der oberen Fläche des Brettes im Bereich zwischen 30° und 60°, genauer gesagt, nahe 45°, liegt.
  12. Gleitbrett nach Anspruch 9, dadurch gekennzeichnet, daß eine der Flächen der Vorsprünge (15, 17) von einer zylindrischen Rolle (26) gebildet wird, deren Drehachse rechtwinklig zur längs verlaufenden Mittelebene des Brettes verläuft.
  13. Gleitbrett nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Flächen der Vorsprünge (15, 17) mit einer Beschichtung zur Reduzierung des Reibungskoeffizienten überzogen sind.
  14. Gleitbrett nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß es einen Anschlag (20) aufweist, der die Verlagerung des hinteren Endes (22) der Plattform nach oben und nach hinten begrenzt.
  15. Gleitbrett nach Anspruch 13, dadurch gekennzeichnet, daß es einen Streifen aus viskoelastischem Material aufweist, der zwischen dem Anschlag und dem hinteren Ende der Plattform eingefügt ist.
  16. Gleitbrett nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Mittel zum Spannen eines Teils des Brettes von einem Arm (31) gebildet werden, der am hinteren Ende der Plattform angeordnet ist, dessen vorderes Ende (30) am hinteren Ende der Plattform (2) angelenkt ist, wobei sich das hintere Ende (32) des Armes gegen einen Fixpunkt (33) der oberen Fläche des Brettes abstützt und diesen unter der Wirkung einer vertikalen Druckkraft (F2), die im hinteren Bereich der Plattform aufgebracht wird, nach hinten drückt.
  17. Gleitbrett nach Anspruch 16, dadurch gekennzeichnet, daß das hintere Ende (32) des Armes auf der oberen Fläche des Brettes angelenkt ist.
  18. Gleitbrett nach einem der Ansprüche 16 oder 17, dadurch gekennzeichnet, daß die Mittel zum Spannen eines Teils der Plattform ebenfalls einen zweiten Arm aufweisen, der mit dem ersten eine Schere (40-51) bildet, wobei sich das vordere Ende (41-51) dieses zweiten Armes gegen einen zweiten Fixpunkt (43-53) der oberen Fläche (5) des Brettes abstützt und wobei diese beiden Fixpunkte voneinander unter der Wirkung einer vertikalen Druckkraft (F2), die auf den hinteren Bereich der Plattform ausgeübt wird, voneinander entfernt werden.
EP96420344A 1995-12-19 1996-11-29 Gleitbrett mit Versteifungsvorrichtung Expired - Lifetime EP0780143B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9515457A FR2742344B1 (fr) 1995-12-19 1995-12-19 Planche de glisse equipee d'un dispositif destine a modifier la raideur de la planche sous l'effet d'une poussee verticale donnee par l'utilisateur
FR9515457 1995-12-19

Publications (2)

Publication Number Publication Date
EP0780143A1 EP0780143A1 (de) 1997-06-25
EP0780143B1 true EP0780143B1 (de) 2001-03-28

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EP96420344A Expired - Lifetime EP0780143B1 (de) 1995-12-19 1996-11-29 Gleitbrett mit Versteifungsvorrichtung

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US (1) US5927743A (de)
EP (1) EP0780143B1 (de)
AT (1) ATE200033T1 (de)
DE (1) DE69612268T2 (de)
FR (1) FR2742344B1 (de)

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WO2015105435A1 (ru) * 2014-01-13 2015-07-16 Сергей Геннадьевич ЯРОШ Система подвески средства для спуска с горы по снегу (варианты)
US9950242B2 (en) * 2015-06-19 2018-04-24 Anton F. Wilson Automatically adaptive ski
US10286288B1 (en) * 2015-12-29 2019-05-14 Alpine Radius Control Technologies, LLC Torsional stabilizer for skis
AT522846B1 (de) * 2019-06-12 2021-04-15 Franz Schitzhofer Sportboard mit verstellbarer durchbiegung
CZ2022329A3 (cs) * 2022-08-04 2023-12-27 Vítězslav Kazinota Lyže

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FR2686798B1 (fr) * 1992-01-31 1994-03-25 Salomon Sa Dispositif visant a modifier la repartition d'un ski sur sa surface de glisse et ski equipe d'un tel dispositif.
FR2686799B1 (fr) * 1992-01-31 1994-03-25 Salomon Sa Dispositif visant a modifier la repartition d'un ski sur sa surface de glisse et ski equipe d'un tel dispositif.
FR2690079B1 (fr) * 1992-04-17 1994-07-08 Salomon Sa Dispositif interface destine a modifier la repartition naturelle de pression d'un ski sur sa surface de glisse.
FR2695041A1 (fr) * 1992-08-31 1994-03-04 Anesi Tullio Elément de liaison adaptable entre ski et fixation de ski.
FR2702386B1 (fr) * 1993-03-11 1995-04-28 Rossignol Sa Ski équipé de moyens interactifs de modification de sa raideur.
WO1995000217A1 (de) * 1993-06-18 1995-01-05 Helmut Girardelli Vorrichtung zum beeinflussen der biegeeigenschaften und/oder der durchbiegung eines skis
FR2713945B1 (fr) * 1993-12-17 1996-03-29 Salomon Sa Dispositif interface entre un ski et des éléments de fixation.
DE4343673A1 (de) * 1993-12-21 1995-06-22 Marker Deutschland Gmbh Vorrichtung zur Versteifung eines Skis

Also Published As

Publication number Publication date
FR2742344A1 (fr) 1997-06-20
DE69612268D1 (de) 2001-05-03
DE69612268T2 (de) 2002-01-03
FR2742344B1 (fr) 1998-01-16
US5927743A (en) 1999-07-27
EP0780143A1 (de) 1997-06-25
ATE200033T1 (de) 2001-04-15

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