EP0806228B1 - Ski - Google Patents

Ski Download PDF

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Publication number
EP0806228B1
EP0806228B1 EP97420072A EP97420072A EP0806228B1 EP 0806228 B1 EP0806228 B1 EP 0806228B1 EP 97420072 A EP97420072 A EP 97420072A EP 97420072 A EP97420072 A EP 97420072A EP 0806228 B1 EP0806228 B1 EP 0806228B1
Authority
EP
European Patent Office
Prior art keywords
ski
zone
thickness
upper element
length
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
EP97420072A
Other languages
English (en)
French (fr)
Other versions
EP0806228A1 (de
Inventor
Roger Abondance
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 EP0806228A1 publication Critical patent/EP0806228A1/de
Application granted granted Critical
Publication of EP0806228B1 publication Critical patent/EP0806228B1/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
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/0405—Shape thereof when projected on a plane, e.g. sidecut, camber, rocker

Definitions

  • the invention relates to the field of alpine skiing and cross-country skiing. She aims more particularly an improved geometry in which the variation thickness of the ski over its length gives very good sliding properties important.
  • a ski can be compared to a beam or a board slightly curved longitudinally to form the camber of the ski, with a part front raised to form the tip and a rear part also slightly raised to form the heel.
  • the ski being laid flat on the snow, and under the effect of the skier's load, the bottom surface or sole remains in contact with the snow from the front contact line to the rear contact line.
  • the distance between Front and rear contact lines determine the "bearing length" of the ski.
  • this beam is precisely determined to give the ski the desired behavior, particularly in bending and torsion.
  • the beam or the board has a certain flexibility which allows it to fit the shape of the terrain.
  • the flexibility characteristics largely result from the variation in thickness of the board between the front and rear contact lines.
  • the thickness of the ski increases continuously from the line front contact to the skate area in which it is maximum. This thickness then decreases continuously up to the rear contact line.
  • Such a geometry is for example described in patent FR 2 700 476 in the case of a ski background.
  • This thickness distribution is generally combined with a variation of width of the ski according to its length, to give it a behavior specific.
  • the pressure exerted on the snow for a ski is maximum at the level of the skate, near the skier's foot, then decreases gradually until it disappears near the ends.
  • This pressure distribution curve is mainly related to the variation in thickness along the ski.
  • the overpressure area of the shoe has a negative influence on the sliding characteristics of the board.
  • the problem which the invention therefore proposes to solve is to increase notoriously the sliding characteristics of a ski without modifying its dynamic behavior.
  • the invention therefore relates to a ski intended for the practice of alpine skiing or cross-country skiing, formed of a body and the sole of which has a bearing surface of length Lp delimited at the front and at the rear by the lines of contact respectively before A 'and rear D', and whose thickness is E A at the level of the front contact line A 'and E D at the level of the rear contact line D'.
  • the invention consists in giving the ski a constant thickness in its central part, to ensure a uniform distribution of the pressure exerted on snow.
  • zones located in front and behind the characteristic intermediate zone are decreasing in thickness to the contact lines.
  • a ski according to the invention has in its central area an upper face parallel to the sole.
  • the invention is not limited to skiing in which the thickness of the intermediate zone is strictly constant, but also covers achievements in which this thickness is substantially constant.
  • substantially constant we mean that the maximum difference in thickness on two points of this intermediate zone is at most equal to five percent (5%) of the total thickness.
  • the invention relates to narrow skis used for cross-country skiing cross-country or for alpine skiing, on which the user's foot is positioned according to the longitudinal axis.
  • the thickness of the ski decreases from the characteristic intermediate zone up to the front and rear contact lines.
  • the intermediate zone Z BC is constituted by a monobloc part of the beam.
  • the intermediate zone Z BC is constituted by the superposition of a part of the beam and of an upper element surmounting it.
  • the upper face of the ski receives in the intermediate zone features a rigid plate which ensures uniform transmission over its entire length of the weight and impulses generated by the skier, so that the distribution of the pressure exerted on the snow is as uniform as possible on the entire length of the characteristic intermediate zone.
  • the entire length of the element upper is glued on the beam.
  • the central part of the element upper is glued on the beam and the front and rear end parts of the reinforcing element are connected to the beam by strips of viscoelastic material. This reduces stress at the ends of the element and benefit from shear damping phenomena viscoelastic bands.
  • the front and rear end portions of this upper element can have vertical sections, corresponding to a thickness step.
  • These parts extremals may also have inclined sides in the direction of the lines contact respectively front and rear, so as to ensure a variation of continuous thickness and without breakage.
  • the upper element can take different forms which prove to be interesting, either to manufacture or under the conditions of use.
  • the extreme front and rear parts of the upper element has inclined sides in the direction of the contact lines front A 'and rear D' respectively.
  • the upper element is presented in top view under a general rectangular shape.
  • the front and rear end portions of the upper element conforms to a V shape, the point of which is directed towards the exterior of the top element.
  • the front and rear end parts of the upper element form in view from above, two non-parallel lines.
  • the beam and the upper element can either be of constant thickness, or be of complementary shapes of so that the thickness of the assembly is of constant thickness.
  • the upper beam and element can be convex or concave.
  • Figure 1 is a side view of a ski according to the invention, in which the proportions have been exaggeratedly modified to allow good understanding of the dimensional criteria characteristic of the invention.
  • Figure 2 is a side view of a ski according to an alternative embodiment.
  • Figure 3 is a side view of a detail of the zone linking zone intermediates and before characteristics of the invention.
  • FIG. 4 is an alternative embodiment of FIG. 3.
  • Figures 5 to 7 are top views of skis having elements superior characteristics according to three variants of form.
  • FIG. 8 is a detail side view of the intermediate zone of a ski equipped with an upper element connected to the upper face of the ski partly by strips of viscoelastic material.
  • the invention relates to a ski, cross-country or downhill, which has a characteristic thickness variation along its length.
  • a ski (1) mainly consists of a beam (2) of which the underside (3) forms the sole.
  • the thickness of the ski at the contact lines is less than the thickness measured in the bearing surface.
  • the thicknesses at the front (A ') and rear (D') contact lines are denoted E A and E D respectively .
  • the bearing surface breaks down into three contiguous zones, namely: a central zone Z BC surrounded by two zones respectively before Z AB and Z CD .
  • the central zone Z BC extends over at least fifty percent (50%) of the length Lp of the bearing zone, and has a substantially constant thickness E.
  • the difference maximum between the thicknesses measured at two points in this central zone ZBC is at most equal to five percent (5%) and preferably less than one percent (1%) of the total thickness E, while this difference is greater 25% and 10% respectively on a cross-country ski and an alpine ski in accordance with Prior Art.
  • the variation in thickness on the zones before Z AB and Z CD also meets precise criteria.
  • the quotient of the difference in thickness by the length is between 0.01 and 0.1, that is to say: 0.01 ⁇ E - E A / L AB ⁇ 0.1
  • the intermediate zone Z CD may have a length greater than 630 mm and more favorably 800 millimeters.
  • the thickness E of this same area must be between 15 and 35 millimeters, while the thickness E A , E D at the front and rear contact lines can vary at the same time between 4 and 12 millimeters .
  • the area intermediate of constant thickness can be constituted either by a portion itself of the beam (2), or be formed of the association of the beam and an element upper (10) disposed on the upper face (6) of the ski.
  • the intermediate zone Z BC is in one piece, it may or may not be seen there as a break in curvature at the points B and C constituting the limits of the intermediate zone, or else ensuring a smooth transition easier to manufacture.
  • the upper element may have ends (11, 12) of various geometries. So we can consider giving this end (11) a form of vertical pan (13) or else a form bevelled (14) ensuring a gradual thickness variation over a short range of transition.
  • the upper element (10) has a substantially rectangular in shape, and the end portions (11, 12) terminate by straight segments (16, 17), mutually parallel and perpendicular to the median longitudinal plane of the ski.
  • the extreme parts (11, 12) of the upper element (10) follow chevron shapes (18, 19) oriented by the ends of the ski. This allows the effect of pressure distributor of the upper element (10).
  • the ends (11, 12) of the element upper (10) follows the shapes of straight segments (20, 21) which, the converging extensions, on one side of the ski, substantially at the level of the length median of the upper element (10). This creates an asymmetry between the skis left and right.
  • the upper element (10) can be connected to the upper face (6) of the ski by gluing or other equivalent means, as illustrated only in its middle part.
  • the front and rear parts of the reinforcing element (10) are connected to the upper face (6) of the ski by strips of viscoelastic materials (25, 26), which allows a uniform distribution of pressure while ensuring a damping effect by shearing of the viscoelastic material.

Landscapes

  • Road Paving Structures (AREA)
  • Laminated Bodies (AREA)
  • Lubricants (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Rotary Pumps (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Claims (17)

  1. Zum Abfahrts- oder Langlaufskisport bestimmter Ski (1), aus einem Korpus (2) bestehend, dessen Trägerplatte (3) eine Trägerfläche mit einer Länge Lp aufweist, die vorn und hinten durch die vordere Berührungslinie A' bzw. die hintere Berührungslinie D' begrenzt ist, und dessen Dicke auf Höhe der vorderen Berührungslinie A' EA und auf Höhe der hinteren Berührungslinie D' ED ist,
    dadurch gekennzeichnet, dass
    sich die Trägerfläche in drei benachbarte Bereiche unterteilt, und zwar:
    einen Zentralbereich ZBC mit der im wesentlichen konstanten Dicke E, dessen Länge LBC über fünfzig Prozent (50 %) der Länge Lp der Trägerfläche beträgt;
    einen vorderen Bereich ZAB und einen hinteren Bereich ZCD mit variabler Dicke, wobei die beiden Bereiche jeweils vor und hinter dem Zentralbereich ZBC angeordnet sind und die Längen LAB und LCD haben,
    dass der Quotient E - EA / LAB der Differenz der Dicke (E - EA) des Skis zwischen den äussersten Punkten (A, B) des vorderen Bereichs, geteilt durch die Länge (LAB) dieses Bereichs, zwischen Nullkommanulleins (0,01) und Nullkommaeins (0,1) beträgt;
    dass der Quotient E - ED / LCD der Differenz der Dicke (E - ED) des Skis zwischen den äussersten Punkten (C, D) des hinteren Bereichs, geteilt durch die Länge (LCD) dieses Bereichs, zwischen Nullkommanulleins (0,01) und Nullkommaeins (0,1) beträgt.
  2. Ski nach Anspruch 1,
    dadurch gekennzeichnet, dass die Länge LBC des mittleren Bereichs ZBCBCBC zwischen sechshundert Millimeter (600 mm) und neunhundert Millimeter (900 mm) beträgt.
  3. Ski nach Anspruch 1,
    dadurch gekennzeichnet, dass er zum Langlaufskisport bestimmt ist, und dass die Dicke E des mittleren Bereichs ZBC zwischen zweiundzwanzig Millimeter (22 mm) und fünfunddreissig Millimeter (35 mm) beträgt.
  4. Ski nach Anspruch 1,
    dadurch gekennzeichnet, dass er zum Abfahrtsskisport bestimmt ist, und dass die Dicke E des mittleren Bereichs ZBC zwischen fünfzehn Millimeter (15 mm) und dreissig Millimeter (30 mm) beträgt.
  5. Ski nach Anspruch 1,
    dadurch gekennzeichnet, dass er zum Langlaufskisport bestimmt ist, und dass der Quotient der Differenz der Dicke (E - EA; E - ED) des Skis zwischen den äussersten Punkten (A, B; C, D) jedes vorderen Bereichs ZAB und hinteren Bereichs ZCD, geteilt durch die Länge (LAB; LCD) dieses Bereichs, zwischen Nullkommanulldrei (0,03) und Nullkommanullneun (0,09) beträgt.
  6. Ski nach Anspruch 1,
    dadurch gekennzeichnet, dass er zum Abfahrtsskisport bestimmt ist, und dass der Quotient der Differenz der Dicke (E - EA; E - ED) des Skis zwischen den äussersten Punkten (A, B; C, D) jedes vorderen Bereichs ZAB und hinteren Bereichs ZCD, geteilt durch die Länge (LAB; LCD) dieses Bereichs, zwischen Nullkommanulldrei (0,03) und Nullkommanullneun (0,09) beträgt.
  7. Ski nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, dass der mittlere Bereich ZBC durch einen einstückigen Abschnitt des Trägers (3) gebildet ist.
  8. Ski nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, dass der mittlere Bereich ZBC dadurch gebildet ist, dass über einem Abschnitt des Trägers (3) ein oberes Teil (10) angeordnet ist, das den Träger (3) überragt.
  9. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass die gesamte Länge des oberen Teils (10) auf den Träger (3) aufgeklebt ist.
  10. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass der zentrale Abschnitt des oberen Teils (10) auf den Träger (3) aufgeklebt ist, und dass die äussersten vorderen und hinteren Abschnitte (11, 12) des oberen Teils (10) durch Streifen (25, 26) aus viskoelastischem Material mit dem Träger (3) verbunden sind.
  11. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass die äussersten vorderen und hinteren Abschnitte (11, 12) des oberen Teils (10) vertikale Felder (13) aufweisen.
  12. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass die äussersten vorderen und hinteren Abschnitte (11, 12) des oberen Teils (10) Felder (14) aufweisen, die in Richtung der vorderen Berührungslinie A' bzw. hinteren Berührungslinie D' geneigt sind.
  13. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass die äussersten vorderen und hinteren Abschnitte (11, 12) des oberen Teils (10) durch Segmente (16, 17) gebildet sind, die geradlinig, parallel und senkrecht zur Längsmittelebene des Skis sind.
  14. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass die äussersten vorderen und hinteren Abschnitte (11, 12) des oberen Teils (10) die Form eines V annehmen, dessen Spitze (18, 19) zur Aussenseite des oberen Teils (10) weist.
  15. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass die äussersten vorderen und hinteren Abschnitte des oberen Teils von oben gesehen zwei nicht parallele Linien bilden.
  16. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass sowohl der Träger als auch das obere Teil eine konstante Dicke haben.
  17. Ski nach Anspruch 8,
    dadurch gekennzeichnet, dass der Träger und das obere Teil komplementäre Formen haben, so dass die Dicke des Aufbaus konstant ist.
EP97420072A 1996-05-07 1997-05-05 Ski Expired - Lifetime EP0806228B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605945 1996-05-07
FR9605945A FR2748398B1 (fr) 1996-05-07 1996-05-07 Planche de glisse

Publications (2)

Publication Number Publication Date
EP0806228A1 EP0806228A1 (de) 1997-11-12
EP0806228B1 true EP0806228B1 (de) 2001-11-21

Family

ID=9492092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97420072A Expired - Lifetime EP0806228B1 (de) 1996-05-07 1997-05-05 Ski

Country Status (4)

Country Link
EP (1) EP0806228B1 (de)
AT (1) ATE209060T1 (de)
DE (1) DE69708377T2 (de)
FR (1) FR2748398B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006806A1 (de) 2007-02-07 2008-08-14 Mauser-Werke Oberndorf Maschinenbau Gmbh Bruchtrennverfahren

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3084596B1 (fr) * 2018-08-01 2020-07-10 Skis Rossignol Ski alpin

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2623095B1 (fr) * 1987-11-18 1990-03-30 Salomon Sa Dispositif de guidage lateral d'une chaussure sur un ski de fond
AT400524B (de) * 1988-10-10 1996-01-25 Atomic Austria Gmbh Schi
EP0490044A1 (de) * 1990-12-14 1992-06-17 Salomon S.A. Wintersportski bestehend aus einer Versteifung und einer Basis
FR2686520B1 (fr) * 1992-01-28 1994-04-15 Salomon Sa Perfectionnement pour ski comprenant une plateforme centrale en saillie.
FR2704155B1 (fr) * 1993-04-20 1995-07-07 Salomon Sa Surf des neiges a plateforme en materiau a faible module et inserts locaux.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006806A1 (de) 2007-02-07 2008-08-14 Mauser-Werke Oberndorf Maschinenbau Gmbh Bruchtrennverfahren

Also Published As

Publication number Publication date
FR2748398A1 (fr) 1997-11-14
EP0806228A1 (de) 1997-11-12
DE69708377D1 (de) 2002-01-03
DE69708377T2 (de) 2002-08-14
FR2748398B1 (fr) 1998-06-12
ATE209060T1 (de) 2001-12-15

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