EP0661086B1 - Ski - Google Patents

Ski Download PDF

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Publication number
EP0661086B1
EP0661086B1 EP94420325A EP94420325A EP0661086B1 EP 0661086 B1 EP0661086 B1 EP 0661086B1 EP 94420325 A EP94420325 A EP 94420325A EP 94420325 A EP94420325 A EP 94420325A EP 0661086 B1 EP0661086 B1 EP 0661086B1
Authority
EP
European Patent Office
Prior art keywords
ski
plane
sole
heel
reinforcement
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
EP94420325A
Other languages
English (en)
French (fr)
Other versions
EP0661086A1 (de
Inventor
Jacques Fagot
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 EP0661086A1 publication Critical patent/EP0661086A1/de
Application granted granted Critical
Publication of EP0661086B1 publication Critical patent/EP0661086B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A63C5/0411—Shape thereof when projected on a plane, e.g. sidecut, camber, rocker asymmetric
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/126—Structure of the core

Definitions

  • the invention relates to an improved ski, in particular a ski with asymmetrical structure.
  • the second upper assembly takes the form of a shell which rests on the two side edges of the first lower set.
  • a ski is subject to several types of deformations. It is, during an effort, mainly subjected to a simple normal flexion, exercised perpendicular to the sole on a ski placed between two supports, flat on its sole; this deformation allows it to marry the terrain; the resistance of a ski at this deformation, that is to say its stiffness in bending or its distribution of flexibility, is calculated to distribute the load of the skier on the snow.
  • a ski is also subjected to simple lateral bending, which exercises laterally on the side of the ski and causes bending of the axis median longitudinal of the lower assembly; this deformation, no controlled, is harmful and thwarts the accuracy of skiing.
  • a ski receives twists or twists, in particular at its two ends spatula and heel. As before, these deformations are parasitic and interfere with proper use of the ski.
  • a ski is subject to compound deformations: bending plus torsion, or even normal bending more lateral bending, etc ....
  • the width of the spatula is greater than that of the heel, which in turn is greater than that of the skate.
  • Line edge joining the spatula to the heel is a essential characteristic of a ski. It varies from manufacturer to manufacturer, in particular depending on the specific use envisaged. So a slalom skiing does not have the same dimension line as a downhill ski, everything like that of a recreational ski is different from that of a ski of competition.
  • This dimension line is of considerable importance in practice ski. It is therefore important that during practice, it is not randomly modified during deformation of the ski.
  • FN neutral fiber
  • the mechanical reinforcements are generally located in the intermediate space, on either side of the neutral fiber, especially to ensure good mechanization. To optimize the effectiveness of the reinforcements, it is important to position them as far as possible possible of the neutral fiber (FN), because in a calculation of stiffness in bending, the distance from the reinforcement to the neutral fiber is squared.
  • FN neutral fiber
  • a ski is symmetrical with respect to the plane of symmetry perpendicular to the plane of the sole and passing through the axis longitudinal median thereof.
  • skis that is to say skis whose shape and volume vary in thickness, length and width from one side to the other of the same ski, but whose rib line remains nevertheless symmetrical.
  • manufacturers to keep a simple normal bending i.e. without lateral bending or without parasitic twist, were forced to design an armed structure internal opposite, correcting the dynamic effects of the asymmetry of form.
  • the mechanization elements that is to say the reinforcements, are placed so that the stiffnesses in bending are symmetrical with respect to the passing median vertical plane by the median longitudinal axis of the sole.
  • the Applicant suggested inserting in the intermediate space filled with foam at least one reinforcement possibly asymmetrical, perforated tubular, arranged respectively in back and forth of the skate area.
  • This embodiment aims to improve the guidance of the ski without stiffening it, to make it more comfortable.
  • it does not ensure transmission optimal support on the edges, because as we know, it's at the level of the skate that these supports are the most powerful.
  • the invention takes the opposite view to this rule in order to highlights the interesting effect of a controlled variation of the dimension line. It targets a ski, asymmetrical or not, which offers the possibility of allow the variation of the dimension line according to the impulse given by the skier or according to the conditions of use.
  • FIGS 5 and 6 illustrate other embodiments of the invention.
  • FIGS 7 and 8 show schematically the operation of the invention.
  • Figure 9 shows the layout of a pair of skis.
  • FIG. 10 illustrates another form of ski according to the invention.
  • the ski shown in FIG. 1 essentially comprises, in the direction longitudinal a spatula (1), a central pad area (2), and a heel (3).
  • this ski firstly comprises a first lower assembly, designated by the general reference (10), consisting of a flat sole (11), bordered on each of its two sides lateral by metal edges, respectively (12) and (13).
  • This lower assembly (10) has a perpendicular plane of symmetry (P) in the plane of the sole (11), passing through the median longitudinal axis (I-I ') of ski and lower assembly (10).
  • the ski also comprises a set upper, designated by the general reference (15), formed from above proper (16) and two side edges (17,18) based on the edges (12,13).
  • These two sets, respectively lower (10) and upper (15) define an intermediate space (20), delimited by the above the sole (11), by the internal face of the edges (17,18) and by the inner face of the top (16).
  • This intermediate space (20) comprises the neutral fiber shown schematically by the axis (FN), parallel to the plane of the sole (11).
  • this neutral fiber (FN) is at the ends (1) and (3) parallel to the plane of the sole (11) and is located substantially equidistant from this plane of the sole (11), and the top plane (16).
  • the intermediate space (20) comprises a solid solid flat strip of inclined reinforcement (25), going from the spatula (1) to the heel (3).
  • This flat strip (25) is produced by example of metal or fibrous composite material for application common in the ski area.
  • This characteristic reinforcement strip (25) extends from practically the tip (1) to the heel (2) with a inclination which varies regularly with respect to the plane of the sole (11), namely zero degrees at the tip (1) and the heel (3), at 45 ° to the skate level (2). This variation in the inclination of the flat strip (25) is progressive and continuous.
  • this flat strip feature (25) is made of aluminum alloy commonly used in skiing called ZICRAL (registered trademark PECHINEY-CEGEDUR) of 120 centimeters long, 30 millimeters wide and 0.8 millimeters thick. To allow the passage of the components of the injected foam, this strip (25) is perforated with a multitude of 4 mm holes diameter.
  • ZICRAL registered trademark PECHINEY-CEGEDUR
  • this characteristic strip (25) extends practically from the lower edge of the ski, namely the edge (12), near the lower assembly (10), to the opposite edge skiing, near the upper assembly (15).
  • the intermediate space (20) is filled with a filling material, such as for example foam polyurethane.
  • the width of the flat reinforcement strip characteristic (25) can also vary from the spatula (1) to pad (2), then from this area to the heel (3). As already said, it is important that this inclined strip (25) is massive and possibly perforated.
  • the space intermediate (20) filled with foam includes two inclined reinforcements (30) and (31) analogous to (25), which also vary from zero to 45 degrees, since the spatula or the heel to the skate.
  • these two inclined reinforcements (30,31) are parallel, extend from the sole (11) to the top (16) in defining an angle of not more than 45 ° with respect to the plane of the sole, and are arranged asymmetrically with respect to the plane P by cutting the fiber neutral (FN).
  • the space intermediate (20) comprises a neutral core (35) commonly used for this application, for example in wood, in which a reinforcement is inserted inclined (40) similar to (25,30 or 31).
  • the rest of the intermediate space (20) is in known manner filled with polyurethane foam.
  • this core (35) reinforced by the inclined strip (40) can occupy all the intermediate space (20).
  • the width maximum of ski L1 at the tip is eighty-six millimeters, the maximum width L3 at the heel of eighty millimeters and the minimum width L2 at the level of the shoe (2) of sixty two millimeters.
  • FIG. 7 is a schematic representation of this ski (200) at the level of the skate, first shown in lines mixed, at rest (201), and then, under the action of a load F normal to the surface of the sole, corresponding to the weight of a skier.
  • the band characteristic of the invention (25) being inclined by 45 °, this load F is transforms into two components, respectively one component normal F1 and a lateral component F2.
  • the ski deforms so that the ridge (131) lower of the ski (201) at rest will become the edge (130) of the ski (200) under charge. This edge (130,131) will move in normal bending of a arrow f1 and in lateral bending of a displacement f2.
  • FIG. 8 shows, in top view, the ski according to the invention, in two positions, respectively at rest in mixed lines with its lines of edges (121) and (131), and under load in solid lines, with its two lines of edges (120) and (130).
  • the lateral displacement f2 is, in this case, assimilated to a modification of the dimension line of the ski which from (121) to (120), will dig even more, while on the opposite side (131) and (130), this line of odds tend to become more straight, that is, flatter. So, when skiing, to make a small radius turn, the skier will exert on the internal edge a significant impulse F which decomposes in F1 and F2. This changes the dimension line at the level skating.
  • a pair of skis includes two skis, respectively left designated by the general reference (G) and right designated by the reference (D). These skis are symmetrical with respect to a plan M passing between them.
  • the characteristic bands (25) inclines descend from left to right on the left ski G1 and ascend from left to right on the right ski D, so that the directions of the two reinforcement strips (25) intersect on the plane M, in under the skis. So when the skier has to make turns large spokes, he exerts a minimum load on his skis and he inserts them in curves resulting from the original dimension line, without sensitive changes.
  • the ski according to the invention has become interactive, since it is modify according to need.
  • FIG. 10 shows a ski of particular shape in which the strip reinforcement (70) asymmetrical to the plane (P) is glued against the shell (26), the interior of the intermediate space (20) filled with foam polyurethane.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Lubricants (AREA)
  • Polyesters Or Polycarbonates (AREA)

Claims (4)

  1. Ski mit:
    einer ersten, unteren Anordnung (10), welche eine ebene Sohle (11) umfaßt, die eine zu ihrer Ebene senkrechte und durch ihre mittlere Längsachse I-I' verlaufende Symmetrieebene P aufweist,
    einer zweiten, oberen Anordnung (15), welche eine Oberseite (16) und Seitenkanten (17,18) bildet,
    wobei diese beiden Anordnungen einen Zwischenraum (20) definieren, in dem sich die neutrale Faser (FN) befindet und in dem von der Spitze (1) bis zum hinteren Ende (3) ein glatter Verstärkungsstreifen (25) angeordnet ist, der einen spitzen Winkel zur Ebene der Sohle (11) definiert;
    dadurch gekennzeichnet , daß der Neigungswinkel dieses Streifens (25) zu der Ebene der Sohle (11) sich von der Spitze (1) bis zum hinteren Ende (3) verändert, von jeweils null Grad im Bereich der Spitze (1) und im Bereich des hinteren Endes (3) zu 45° im Bereich der Fußplatte (2).
  2. Ski nach Anspruch 1, dadurch gekennzeichnet , daß der flache Verstärkungsstreifen (25) sich im Bereich der Fußplatte von der ersten, unteren Anordnung (10) in Richtung zur zweiten, oberen Anordnung (15) erstreckt, indem er die Ebene P schneidet und zwei Abschnitte gleicher Breite definiert, welche auf beiden Seiten dieser Ebene P angeordnet sind.
  3. Ski nach Anspruch 1, dadurch gekennzeichnet , daß sich der Neigungswinkel des flache Verstärkungsstreifens (25) von der Spitze (1) bis zum hinteren Ende (3) progressiv und kontinuierlich verändert.
  4. Ski nach Anspruch 1, dadurch gekennzeichnet , daß er mehrere parallele Verstärkungsstreifen (30,31,50,51,52,53) umfaßt.
EP94420325A 1993-11-30 1994-11-22 Ski Expired - Lifetime EP0661086B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9314562A FR2713100B1 (fr) 1993-11-30 1993-11-30 Ski.
FR9314562 1993-11-30

Publications (2)

Publication Number Publication Date
EP0661086A1 EP0661086A1 (de) 1995-07-05
EP0661086B1 true EP0661086B1 (de) 1998-02-18

Family

ID=9453568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94420325A Expired - Lifetime EP0661086B1 (de) 1993-11-30 1994-11-22 Ski

Country Status (5)

Country Link
US (1) US5492357A (de)
EP (1) EP0661086B1 (de)
AT (1) ATE163271T1 (de)
DE (1) DE69408568T2 (de)
FR (1) FR2713100B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5782482A (en) * 1996-01-30 1998-07-21 K-2 Corporation Snowboard and method of construction
DE29713628U1 (de) * 1997-07-31 1998-11-26 Bosch Gmbh Robert Kraftstoffeinspritzdüse
US6293567B1 (en) 1997-09-26 2001-09-25 John D. Menges Snowboard with selectively added structural components
FR2810560B1 (fr) * 2000-06-23 2002-10-11 Salomon Sa Planche a roulette
SI23531B (sl) 2010-11-15 2019-06-28 Elan, D.O.O. Smučka z asimetričnimi karakteristikami

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH152918A (de) * 1931-02-28 1932-02-29 Aluminium Ind Ag Ski aus Leichtmetall-Legierung und Verfahren zur Herstellung desselben.
US2581532A (en) * 1946-08-23 1952-01-08 Arne G Hem Ski
FR1290278A (fr) * 1961-03-01 1962-04-13 Procédé de fabrication des skis et skis obtenus par ledit procédé
FR1435153A (fr) * 1965-03-04 1966-04-15 Plastiques Synthetiques Ski perfectionné en matière plastique
FR87478E (fr) * 1965-03-04 1966-05-06 Plastiques Synthetiques Ski perfectionné
US3722901A (en) * 1970-02-14 1973-03-27 Nippon Musical Instruments Mfg Ski having a hard type foamed resin core
DE2063167B2 (de) * 1970-12-22 1974-10-31 Maschinenfabrik Augsburg-Nuernberg Ag, 8000 Muenchen Ski
JPS4949574A (de) * 1972-09-14 1974-05-14
AT383496B (de) * 1985-02-25 1987-07-10 Head Sportgeraete Gmbh Ski
DD242178B1 (de) * 1985-11-08 1989-12-27 Sportgeraete Veb K Kunststoffski
DD242176B1 (de) * 1985-11-08 1990-04-25 Sportgeraete Veb K Ski
US5108124A (en) * 1986-05-23 1992-04-28 Salomon S.A. Ski having improved sliding and gripping properties
FR2611517B1 (fr) * 1987-02-27 1992-11-06 Salomon Sa Ski a caisson profile
DD280654A3 (de) * 1987-03-17 1990-07-18 Komb Sportgeraete Veb Leichtbaukern
JPH03297479A (ja) * 1990-04-17 1991-12-27 Yamaha Corp スキー板、並びに該スキー板に用いられる中芯体の製法及びスキー板の製法
FR2687924B1 (fr) * 1992-02-28 1994-08-26 Rossignol Sa Ski possedant un renfort tubulaire ajoure.

Also Published As

Publication number Publication date
DE69408568D1 (de) 1998-03-26
FR2713100B1 (fr) 1996-01-05
EP0661086A1 (de) 1995-07-05
FR2713100A1 (fr) 1995-06-09
ATE163271T1 (de) 1998-03-15
US5492357A (en) 1996-02-20
DE69408568T2 (de) 1998-06-25

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