EP0460150B1 - Ski and process of manufacturing such a ski - Google Patents

Ski and process of manufacturing such a ski Download PDF

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Publication number
EP0460150B1
EP0460150B1 EP91900665A EP91900665A EP0460150B1 EP 0460150 B1 EP0460150 B1 EP 0460150B1 EP 91900665 A EP91900665 A EP 91900665A EP 91900665 A EP91900665 A EP 91900665A EP 0460150 B1 EP0460150 B1 EP 0460150B1
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EP
European Patent Office
Prior art keywords
ski
attachment portions
sheath
ski according
plastics material
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EP91900665A
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German (de)
French (fr)
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EP0460150A1 (en
Inventor
Wolfgang Nussbaumer
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Kastle AG
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Kastle AG
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00Skis or snowboards
    • A63C5/04Structure of the surface thereof
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00Skis or snowboards
    • A63C5/06Skis or snowboards with special devices thereon, e.g. steering devices
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00Skis or snowboards
    • A63C5/06Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/07Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings

Definitions

  • the invention relates to a ski with a ski blank usually consisting of belt layers, core, outsole and optionally steel edges, which is formed with a top part and its side faces - at least from the core upwards - by a preferably one-piece plastic shell.
  • Skis of this construction are known, whereby according to a known method the subunit forming the shell of the ski, consisting of cover layer, load-bearing intermediate layer and thermoplastic filling layer, is pressed into the production mold with the help of the ski core, whereby the subunit attaches itself to the inner wall of the mold cavity and due to the compression exerted by the core, the material of the filling layer also fills any gaps (cf. DE-A 38 03 483).
  • An embodiment variant of this known ski construction provides, below the cover layer, a piece which is placed on the reinforcing layer of the shell and which can preferably consist of a shock-absorbing material.
  • the object of the invention is to improve skis of the type mentioned above, especially with regard to the mechanical-dynamic behavior of the ski.
  • the primary object of the invention is to optimize the bending characteristic of skis in such a way that harmful effects of the clamped ski boot on the bending line are largely avoided.
  • attachment parts made of light material which are integrated in the ski blank and which are formed by the sheath, which is preferably made of elastomeric plastic.
  • the invention is based on the knowledge that in particular the bending behavior of the ski is also influenced by the boot clamped on the ski in the sense of a stiffening in the central region of the ski, the simply curved, smooth "theoretical" bending characteristic curve the ski alone (without a clamped shoe) deformed more or less by clamping the shoe in the middle of the ski, ie contains a "stiffening bump" (Fig. 11).
  • the measure according to the invention now, as can be seen from the schematic illustration of the bending characteristic in FIG.
  • ski constructions which have elevations in front of and behind the standing area of the shoe, but these are not measures for optimizing the bending characteristic when the shoe is clamped in and the structure is also not attachment parts which preferably have a common shell are enclosed in elastomeric plastic.
  • the vibration behavior in particular the vibration damping, the torsion behavior, and the surface pressure distribution of the ski can also be influenced by the invention.
  • a special damping effect of the encased attachment parts is that the transmission of the vibrations of the ski to the foot or leg of the skier is damped, which enables fatigue-free skiing.
  • the attachment parts are preferably arranged above the upper flange, especially if this consists of metal, and with the upper flange glued directly or indirectly - ie with the interposition of one or more intermediate layers.
  • the essays should have the lowest possible density, for example between 0.1 to 0.6 g / cm3.
  • foams also foam-fiber composites or other light materials (light woods, honeycomb core materials) come into consideration.
  • closed-cell can be used, which has the advantage that the specifically heavier plastic material of the shell does not penetrate into the attachments.
  • the penetration of the plastic material of the cover into the foam material of the cover can also be prevented in the case of open-cell or mixed-cell foam if the surface of the attachment parts is painted or in some other way it ensures a closed outer skin.
  • a certain penetration of the plastic material of the cover into the material of the attachment parts can be advantageous for the connection of the cover and attachment.
  • open-cell or mixed-cell foams should be used without a closed outer skin.
  • attachment parts As far as the shape of the attachment parts is concerned, these expediently have a wedge shape that increases towards the center of the ski. In any case, it is expedient if the attachment parts including the casing material have a height that increases towards the center of the ski. However, this could also be achieved in the case of non-wedge-shaped attachment parts by merely varying (increasing) the thickness of the shell over the attachment parts in the direction of the center of the ski.
  • Parts of the ski binding can be connected to the front parts (facing the boot stand area) or can engage in the top parts. But you can also mount commercially available binding parts behind the front attachment part and in front of the rear attachment part on the shoe stand area.
  • the top of the shell or a separate surface covering in particular also in the area of the attachment parts, can have a longitudinal rib profile, which makes it possible to influence the torsional rigidity and the surface pressure distribution of the ski.
  • These ribs act in the sense of increasing the torsional rigidity. This means that a "softer" bending line can be selected with the same torsion. The result is that the stability of the bend is maintained while the ski is easier to turn. The ski accelerates perfectly out of the curve.
  • utensils or boxes for utensils into the surface covering or, in the case of a ski of the aforementioned design, into the areas of the plastic cover forming the ski surface, or to insert (glue in) recesses in the cover.
  • the utensils or the boxes or recesses therefor may also protrude into the attachment parts.
  • utensils e.g. Consider: clock, thermometer, compass, lighting, reflector, avalanche search transmitter or receiver, data carrier for the control of ski lift access, valuables, keys, ski passes, altimeter etc.
  • the sheath is preferably made of an elastomeric plastic, e.g. Polyurethane.
  • a method known per se in ski construction can preferably be used, in which the raw ski, which usually consists of belt layers, core, outsole and, if appropriate, steel edges and attachment parts, is inserted into a mold, after which the plastic material is closed after the mold has been closed or the components of the plastic material of the casing are (or are) introduced under pressure into the remaining mold cavity corresponding to the casing, such that the plastic material of the casing covers both the top and side surfaces of the attachment parts as well as the other areas of the top and side surfaces of the ski.
  • a preferred embodiment of this process is the RIM (Reaction Injection Molding) process, by means of which polyurethane or its components, isocyanate and polyol, which are mixed with one another and with a dye in the spray head, are injected into the mold cavity.
  • RIM Reaction Injection Molding
  • polyurethane or its components, isocyanate and polyol which are mixed with one another and with a dye in the spray head, are injected into the mold cavity.
  • pressures in the mold cavity
  • the result is to be an elastomeric polyurethane shell, this can be achieved by selecting and adjusting the components of the polyurethane.
  • Fig. 1 shows a ski in side view or partially in section
  • Fig. 2 shows a plan view of the ski
  • Fig. 3 is a cross section according to III-III of Fig. 1
  • Fig. 4 to 6 show an attachment part for the rear ski in elevation (Fig. 4), in plan view (Fig. 5) and cross-section (Fig. 6)
  • Fig. 7 to 9 show an attachment part for the front ski in elevation (Fig. 7), in plan view ( Fig. 8) and in cross-section (Fig. 9).
  • 10 is a cross section according to XX of FIG. 1
  • FIG. 11 shows a schematic bending characteristic diagram of a ski with a non-optimized bending line.
  • 12 uses a schematic bending characteristic diagram to illustrate the optimization of the bending line according to the invention.
  • the illustrated embodiment is an alpine ski, which - as can be seen in particular from the cross sections according to FIGS. 3 and 10 - consists of the following components: the upper flange 1 and the lower flange 2, e.g. made of light metal, the core with a central part 3 ', e.g. made of wood, and side panels 3 '', e.g. made of foam, the steel edges 4 and the outsole 5 and a leveling layer 6 between the outsole 5 and the lower flange 2 (which can also consist of a load-bearing material, e.g. glass fiber laminate).
  • a top part 7 made of light material, e.g. made of foam.
  • the individual components of the ski are glued together and form the raw ski, which is inserted into a mold and with a sleeve 8 made of elastomeric plastic, e.g. Polyurethane, preferably in the RIM process.
  • the individual components of the raw ski can be glued with the aid of adhesives and / or on the basis of the adhesion properties which the materials of individual components have in the processing state or by melting. Surface adhesion or fusion also occurs between the material of the shell and the components of the raw ski.
  • the material of the casing can "mechanically" cling to the pores and recesses of the coated components.
  • FIG. 1 a wedge-shaped attachment part 7 ′, 7 ′′ is arranged in front of and behind the shoe stand area 9.
  • An example of the shape of the attachment parts is shown in FIGS. 4 to 9, in which the dimensional relationships of height, width and length are distorted.
  • the relationship for the illustrated height of the attachment parts of, for example, 8 mm (rear attachment part 7 ', FIGS. 4 to 6) or, for example, 10 mm (front attachment part 7'', FIGS. 7 to 9)
  • the width is somewhat larger (rear attachment part 7', for example 58 mm, front attachment part 7 '' e.g. 55 mm) and the length can be considerably longer (rear attachment part e.g.
  • front attachment part e.g. 240 mm
  • rear attachment part 7 ' With the rear attachment part 7 ', the width of the upper side decreases towards the center of the ski (with the same width of the base area of the attachment part), with the front attachment part 7''both the width of the upper side and the width of the base area toward the ski center decrease.
  • the sleeve 8 made of elastomeric plastic also encloses the attachment parts 7 ', 7' '.
  • this cover 8 can have a rib profile on its surface on the rear ski, consisting of a plurality of parallel upstanding ribs 10 running in the longitudinal direction of the ski, the ribs 10 also being able to extend over cover areas, among which there is an attachment part 7 '.
  • the height and width of the ribs is on the order of a few millimeters.
  • the ribs 10 extend over a length of approximately 20% of the ski length.
  • Other length or partial areas of the shell of the rear ski and / or front ski can also be equipped with a rib profile.
  • utensils or boxes for utensils can be molded into the shell 8, now preferably on the front ski, or recesses for receiving utensils or the boxes can be left out.
  • These utensils, Bolzano or depressions are designated by 11 in FIGS. 1 and 2.
  • the utensils or their boxes or the depressions can also protrude into the attachment part 7 ′′ located under the casing 8.
  • the depressions are lined with the plastic material of the casing 8.
  • the attachment parts 7 and 7 ', 7'' are arranged above the top chord 1. This is the preferred embodiment, in which in particular the effect of optimizing the bending line is clearly pronounced.
  • the upper belt is made from a fiber-plastic laminate (prepreg)
  • prepreg fiber-plastic laminate

Abstract

Described is a ski with light-alloy attachments (7) located over the overarch and sloping up in front of and behind the shoe support zone (9). The attachments are moulded, together with the other components of the ski or ski blank, from a preferably monobloc shell (8) made of plastic.

Description

Die Erfindung bezieht sich auf einen Ski mit einem üblicherweise aus Gurtschichten, Kern, Laufsohle und gegebenenfalls Stahlkanten bestehenden Skirohling, der samt Aufsatzteilen an seiner Oberseite und seinen Seitenflächen - zumindest vom Kern aufwärts - von einer vorzugsweise einstückigen Hülle aus Kunststoff umformt ist.The invention relates to a ski with a ski blank usually consisting of belt layers, core, outsole and optionally steel edges, which is formed with a top part and its side faces - at least from the core upwards - by a preferably one-piece plastic shell.

Skier dieser Bauweise sind bekannt, wobei gemäß einem bekannten Verfahren die die Schale des Skis bildende Untereinheit, bestehend aus Deckschicht, tragender Zwischenschicht und thermoplastischer Füllschicht, mit Hilfe des Skikernes in die Herstellungsform gedrückt wird, wodurch die Untereinheit sich an die Innenwandung des Formhohlraumes anlegt und durch die vom Kern ausgeübte Kompression außerdem das Material der Füllschicht allfällige Lücken ausfüllt (vgl. DE-A 38 03 483). Eine Ausführungsvariante dieser bekannten Skikonstruktion sieht unterhalb der Deckschicht ein auf die Verstärkungsschicht der Schale aufgesetztes Stück vor, das vorzugsweise aus einem stoßabsorbierenden Material bestehen kann.Skis of this construction are known, whereby according to a known method the subunit forming the shell of the ski, consisting of cover layer, load-bearing intermediate layer and thermoplastic filling layer, is pressed into the production mold with the help of the ski core, whereby the subunit attaches itself to the inner wall of the mold cavity and due to the compression exerted by the core, the material of the filling layer also fills any gaps (cf. DE-A 38 03 483). An embodiment variant of this known ski construction provides, below the cover layer, a piece which is placed on the reinforcing layer of the shell and which can preferably consist of a shock-absorbing material.

Aufgabe der Erfindung ist es, Skier der eingangs genannten Bauweise zu verbessern, und zwar vor allem im Hinblick auf das mechanisch-dynamische Verhalten des Skis.The object of the invention is to improve skis of the type mentioned above, especially with regard to the mechanical-dynamic behavior of the ski.

Vornehmlich ist es Aufgabe der Erfindung, die Biegekennlinie von Skiern so zu optimieren, daß schädliche Einflüsse des eingespannten Skischuhs auf die Biegelinie weitgehend vermieden werden.The primary object of the invention is to optimize the bending characteristic of skis in such a way that harmful effects of the clamped ski boot on the bending line are largely avoided.

Dies wird erfindungsgemäß dadurch erreicht, daß vor und hinter dem Schuh-Standbereich gegenüber diesem aufragende im Skirohling integrierte Aufsatzteile aus Leichtwerkstoff angeordnet sind, die von der vorzugsweise aus elastomerem Kunststoff bestehenden Hülle mitumformt sind.This is achieved according to the invention in that, in front of and behind the shoe stand area, there are arranged attachment parts made of light material which are integrated in the ski blank and which are formed by the sheath, which is preferably made of elastomeric plastic.

Die Erfindung geht von der Erkenntnis aus, daß insbesondere das Biegeverhalten des Skis auch durch den am Ski in der Bindung eingespannten Schuh beeinflußt wird, und zwar im Sinne einer Versteifung im mittleren Bereich des Skis, wobei sich die einfach gewölbte, glatte "theoretische" Biegekennlinie des Skis allein (ohne eingespannten Schuh) durch das Einspannen des Schuhs in der Skimitte mehr oder weniger verformt, d.h. einen "Versteifungshöcker" enthält (Fig. 11). Die erfindungsgemäße Maßnahme bewirkt nun, wie aus der schematischen Darstellung der Biegekennlinie in Fig. 12 ersichtlich, daß der Scheitelbereich B' der Biegekennlinie (strichliert) des Skis zunächst ohne eingespannten Schuh vor und hinter dem Schuh-Standbereich bewußt je ein Maximum BM aufweist, wobei aber nach dem Einspannen des Schuhs in die Bindung diese beiden Maxima praktisch verschwinden, d.h. durch einen im wesentlichen glatten bogenförmigen Scheitelabschnitt B der Biegekennlinie überbrückt werden, wodurch die Biegekennlinie auch insgesamt einen ausgeglichenen bogenförmigen glatten Verlauf erhält und so optimiert wird.The invention is based on the knowledge that in particular the bending behavior of the ski is also influenced by the boot clamped on the ski in the sense of a stiffening in the central region of the ski, the simply curved, smooth "theoretical" bending characteristic curve the ski alone (without a clamped shoe) deformed more or less by clamping the shoe in the middle of the ski, ie contains a "stiffening bump" (Fig. 11). The measure according to the invention now, as can be seen from the schematic illustration of the bending characteristic in FIG. 12, that the apex region B 'of the bending characteristic (dashed line) of the ski initially consciously has a maximum BM without a clamped shoe in front of and behind the shoe standing area, whereby but after clamping the shoe in the binding these two maxima practically disappear, ie are bridged by an essentially smooth, arc-shaped apex section B of the bending characteristic curve, as a result of which the bending characteristic curve also receives a balanced, curved, smooth course overall and is thus optimized.

Es sind zwar bereits Skikonstruktionen vorgeschlagen worden, die vor und hinter dem Standbereich des Schuhs Erhöhungen aufweisen, doch handelt es sich dabei nicht um Maßnahmen zur Optimierung der Biegekennlinie bei eingespanntem Schuh und vom Aufbau her auch nicht um Aufsatzteile, die von einer gemeinsamen Hülle aus vorzugsweise elastomerem Kunststoff umschlossen sind.There have already been proposed ski constructions which have elevations in front of and behind the standing area of the shoe, but these are not measures for optimizing the bending characteristic when the shoe is clamped in and the structure is also not attachment parts which preferably have a common shell are enclosed in elastomeric plastic.

Durch die Erfindung kann auch das Schwingungsverhalten insbesondere die Vibrationsdämpfung, das Torsionsverhalten, die Flächendruckverteilung des Skis beeinflußt werden. Ein besonderer Dämpfungseffekt der umhüllten Aufsatzteile liegt auch darin, daß die Übertragung der Schwingungen des Skis auf den Fuß bzw. das Bein des Skifahrers gedämpft werden, wodurch ein ermüdungsfreieres Skilaufen ermöglicht wird. In bevorzugter Weise werden die Aufsatzteile über dem Obergurt, vor allem wenn dieser aus Metall besteht, angeordnet und mit dem Obergurt direkt oder indirekt - d.h. unter Zwischenschaltung von einer oder mehreren Zwischenschichten- verklebt.The vibration behavior, in particular the vibration damping, the torsion behavior, and the surface pressure distribution of the ski can also be influenced by the invention. A special damping effect of the encased attachment parts is that the transmission of the vibrations of the ski to the foot or leg of the skier is damped, which enables fatigue-free skiing. The attachment parts are preferably arranged above the upper flange, especially if this consists of metal, and with the upper flange glued directly or indirectly - ie with the interposition of one or more intermediate layers.

Die Aufsätze sollen eine möglichst geringe Dichte aufweisen, etwa zwischen 0,1 bis 0,6 g/cm³. Dabei kommen insbesondere Schaumstoffe, auch Schaum-Faser-Verbundwerkstoffe oder sonstige Leichtwerkstoffe (leichte Hölzer, Wabenkernwerkstoffe) in Betracht. Bei den Schaumstoffen können z.B. geschlossenzellige verwendet werden, was den Vorteil hat, daß das spezifisch schwerere Kunststoffmaterial der Hülle nicht in die Aufsätze eindringt. Das Eindringen des Kunststoffmaterials der Hülle in das Schaumstoffmaterial der Hülle kann auch bei offenzelligem oder gemischtzelligem Schaumstoff verhindert werden, wenn man die Oberfläche der Aufsatzteile lackiert oder auf andere Weise für eine geschlossene Außenhaut sorgt. Andererseits kann aber ein gewisses Eindringen des Kunststoffmaterials der Hülle in das Material der Aufsatzteile für die Verbindung von Hülle und Aufsatz vorteilhaft sein. Dann sollten offenzellige oder gemischtzellige Schaumstoffe ohne geschlossene Außenhaut verwendet werden.The essays should have the lowest possible density, for example between 0.1 to 0.6 g / cm³. In particular, foams, also foam-fiber composites or other light materials (light woods, honeycomb core materials) come into consideration. For the foams e.g. closed-cell can be used, which has the advantage that the specifically heavier plastic material of the shell does not penetrate into the attachments. The penetration of the plastic material of the cover into the foam material of the cover can also be prevented in the case of open-cell or mixed-cell foam if the surface of the attachment parts is painted or in some other way it ensures a closed outer skin. On the other hand, a certain penetration of the plastic material of the cover into the material of the attachment parts can be advantageous for the connection of the cover and attachment. Then open-cell or mixed-cell foams should be used without a closed outer skin.

Was die Form der Aufsatzteile betrifft, so weisen diese zweckmäßig eine gegen die Skimitte hin ansteigende Keilform auf. Jedenfalls ist es zweckmäßig, wenn die Aufsatzteile inclusive Hüllenmaterial eine in Richtung zur Skimitte hin ansteigende Bauhöhe aufweisen. Dies könnte allerdings auch bei nicht keilförmigen Aufsatzteilen dadurch erreicht werden, daß bloß die Dicke der Hülle über den Aufsatzteilen in Richtung zur Skimitte hin variiert (zunimmt).As far as the shape of the attachment parts is concerned, these expediently have a wedge shape that increases towards the center of the ski. In any case, it is expedient if the attachment parts including the casing material have a height that increases towards the center of the ski. However, this could also be achieved in the case of non-wedge-shaped attachment parts by merely varying (increasing) the thickness of the shell over the attachment parts in the direction of the center of the ski.

An die Aufsatzteile bzw. deren Hüllenabschnitte können stirnseitig (dem Schuh-Standbereich zugewandt) Teile der Skibindung angeschlossen sein oder in die Aufsatzteile eingreifen. Man kann aber auch handelsübliche Bindungsteile hinter dem vorderen Aufsatzteil und vor dem hinteren Aufsatzteil auf dem Schuh-Standbereich montieren.Parts of the ski binding can be connected to the front parts (facing the boot stand area) or can engage in the top parts. But you can also mount commercially available binding parts behind the front attachment part and in front of the rear attachment part on the shoe stand area.

Vorzugsweise im hinteren Teil des Skis kann die Oberseite der Hülle bzw. eines gesonderten Oberflächenbelages, insbesondere auch im Bereich der Aufsatzteile, ein Längsrippenprofil aufweisen, wodurch eine Beeinflussung der Torsionssteifigkeit und der Flächendruckverteilung des Skis möglich ist. Diese Rippen wirken im Sinne einer Erhöhung der Torsionssteifigkeit. Dadurch kann bei gleicher Torsion eine "weichere" Biegelinie gewählt werden. Das Resultat ist, daß bei leichterer Drehbarkeit des Skis die Stabilität in der Kurve erhalten bleibt. Der Ski beschleunigt hervorragend aus der Kurve heraus.Preferably in the rear part of the ski, the top of the shell or a separate surface covering, in particular also in the area of the attachment parts, can have a longitudinal rib profile, which makes it possible to influence the torsional rigidity and the surface pressure distribution of the ski. These ribs act in the sense of increasing the torsional rigidity. This means that a "softer" bending line can be selected with the same torsion. The result is that the stability of the bend is maintained while the ski is easier to turn. The ski accelerates perfectly out of the curve.

Weiters ist es möglich, in den Oberflächenbelag bzw. bei einem Ski der eingangs genannten Bauweise in die die Skioberfläche bildenden Bereiche der Kunststoffhülle Utensilien oder Boxen für Utensilien einzuformen oder in Vertiefungen der Hülle einzulegen (einzukleben). Die Utensilien bzw. die Boxen oder Vertiefungen hiefür können gegebenenfalls auch in die Aufsatzteile hineinragen. Als Utensilien kommen z.B. in Betracht: Uhr, Thermometer, Kompaß, Beleuchtung, Rückstrahler, Lawinensuch-Sender oder -Empfänger, Datenträger für die Steuerung von Skiliftzugängen, Wertgegenstände, Schlüssel, Skipässe, Höhenmesser etc.Furthermore, it is possible to mold utensils or boxes for utensils into the surface covering or, in the case of a ski of the aforementioned design, into the areas of the plastic cover forming the ski surface, or to insert (glue in) recesses in the cover. The utensils or the boxes or recesses therefor may also protrude into the attachment parts. As utensils e.g. Consider: clock, thermometer, compass, lighting, reflector, avalanche search transmitter or receiver, data carrier for the control of ski lift access, valuables, keys, ski passes, altimeter etc.

Die Hülle besteht vorzugsweise aus einem elastomeren Kunststoff, z.B. Polyurethan.The sheath is preferably made of an elastomeric plastic, e.g. Polyurethane.

Zur Herstellung eines erfindungsgemäßen Skis kann vorzugsweise ein- im Skibau an sich bekanntes - Verfahren angewandt werden, bei dem der üblicherweise aus Gurtschichten, Kern, Laufsohle und gegebenenfalls Stahlkanten sowie aus Aufsatzteilen bestehende Rohski in eine Form eingelegt wird, worauf nach Schließen der Form das Kunststoffmaterial bzw. die Komponenten des Kunststoffmaterials der Hülle gegebenenfalls unter Druck in den verbleibenden, der Hülle entsprechenden Formhohlraum eingeführt wird (bzw. werden), derart, daß das Kunststoffmaterial der Hülle sowohl die Oberseite und Seitenfläche der Aufsatzteile als auch die übrigen Bereiche der Oberseite und Seitenflächen des Skis umschließt.To produce a ski according to the invention, a method known per se in ski construction can preferably be used, in which the raw ski, which usually consists of belt layers, core, outsole and, if appropriate, steel edges and attachment parts, is inserted into a mold, after which the plastic material is closed after the mold has been closed or the components of the plastic material of the casing are (or are) introduced under pressure into the remaining mold cavity corresponding to the casing, such that the plastic material of the casing covers both the top and side surfaces of the attachment parts as well as the other areas of the top and side surfaces of the ski.

Eine bevorzugte Ausgestaltung dieses Verfahrens ist das RIM (Reaction Injection Moulding)-Verfahren, durch welches Polyurethan bzw. dessen Komponenten Isocyanat und Polyol, die im Spritzkopf miteinander und mit einem Farbstoff vermengt werden, in den Formhohlraum gespritzt werden. Es wird meist mit Drücken (im Formhohlraum) von 2 bis 15 bar gearbeitet. Soll das Ergebnis - wie bevorzugt - eine elastomere Polyurethan-Hülle sein, kann dies durch Auswahl und Einstellung der Komponenten des Polyurethans erreicht werden.A preferred embodiment of this process is the RIM (Reaction Injection Molding) process, by means of which polyurethane or its components, isocyanate and polyol, which are mixed with one another and with a dye in the spray head, are injected into the mold cavity. Usually pressures (in the mold cavity) of 2 to 15 bar are used. If, as is preferred, the result is to be an elastomeric polyurethane shell, this can be achieved by selecting and adjusting the components of the polyurethane.

Die Erfindung wird nachstehend anhand der Zeichnungen durch ein Ausführungsbeispiel näher erläutert.The invention is explained below with reference to the drawings by an embodiment.

Fig. 1 zeigt einen Ski in Seitenansicht bzw. teilweise im Schnitt, Fig. 2 zeigt eine Draufsicht auf den Ski, Fig. 3 ist ein Querschnitt gemäß III-III der Fig. 1, Fig. 4 bis 6 zeigen einen Aufsatzteil für den Hinterski im Aufriß (Fig. 4), in Draufsicht (Fig. 5) und Kreuzriß (Fig. 6), Fig. 7 bis 9 zeigen einen Aufsatzteil für den Vorderski im Aufriß (Fig. 7), in Draufsicht (Fig. 8) und im Kreuzriß (Fig. 9). Fig. 10 ist ein Querschnitt gemäß X-X der Fig. 1, Fig. 11 zeigt ein schematisches Biegekennliniendiagramm eines Skis mit nicht optimierter Biegelinie. Fig. 12 veranschaulicht anhand eines schematischen Biegekennliniendiagramms die erfindungsgemäße Optimierung der Biegelinie.Fig. 1 shows a ski in side view or partially in section, Fig. 2 shows a plan view of the ski, Fig. 3 is a cross section according to III-III of Fig. 1, Fig. 4 to 6 show an attachment part for the rear ski in elevation (Fig. 4), in plan view (Fig. 5) and cross-section (Fig. 6), Fig. 7 to 9 show an attachment part for the front ski in elevation (Fig. 7), in plan view ( Fig. 8) and in cross-section (Fig. 9). 10 is a cross section according to XX of FIG. 1, FIG. 11 shows a schematic bending characteristic diagram of a ski with a non-optimized bending line. 12 uses a schematic bending characteristic diagram to illustrate the optimization of the bending line according to the invention.

Beim dargestellten Ausführungsbeispiel handelt es sich um einen Alpinski, der - wie insbesondere aus den Querschnitten nach Fig. 3 und 10 hervorgeht - aus folgenden Bauteilen besteht: dem Obergurt 1 und dem Untergurt 2, z.B. aus Leichtmetall, dem Kern mit einem Mittelteil 3', z.B. aus Holz, und Seitenteilen 3'', z.B. aus Schaumstoff, den Stahlkanten 4 und der Laufsohle 5 sowie einer Ausgleichsschicht 6 zwischen Laufsohle 5 und Untergurt 2 (die auch aus tragendem Werkstoff, z.B. Glasfaserlaminat bestehen kann). Zu diesem üblichen Aufbau eines Alpinskis kommt erfindungsgemäß ein Aufsatzteil 7 aus Leichtwerkstoff, z.B. aus Schaumstoff. Die einzelnen Bauteile des Skis sind miteinander verklebt und bilden den Rohski, der in eine Form eingelegt und mit einer Hülle 8 aus elastomerem Kunststoff, z.B. Polyurethan, vorzugsweise im RIM-Verfahren umformt wird. Das Verkleben der einzelnen Bauteile des Rohskis kann mit Hilfe von Klebstoffen und/oder aufgrund der den Werkstoffen einzelner Bauteile im Verarbeitungszustand zukommenden Adhäsionseigenschaften bzw. durch Verschmelzen erfolgen. Auch zwischen dem Material der Hülle und den Bauteilen des Rohskis tritt Oberflächenhaftung auf oder ein Verschmelzen ein. Zusätzlich kann sich das Material der Hülle in Poren und Ausnehmungen der umhüllten Bauteile "mechanisch" verklammern.The illustrated embodiment is an alpine ski, which - as can be seen in particular from the cross sections according to FIGS. 3 and 10 - consists of the following components: the upper flange 1 and the lower flange 2, e.g. made of light metal, the core with a central part 3 ', e.g. made of wood, and side panels 3 '', e.g. made of foam, the steel edges 4 and the outsole 5 and a leveling layer 6 between the outsole 5 and the lower flange 2 (which can also consist of a load-bearing material, e.g. glass fiber laminate). In addition to this usual structure of alpine ski, according to the invention there is a top part 7 made of light material, e.g. made of foam. The individual components of the ski are glued together and form the raw ski, which is inserted into a mold and with a sleeve 8 made of elastomeric plastic, e.g. Polyurethane, preferably in the RIM process. The individual components of the raw ski can be glued with the aid of adhesives and / or on the basis of the adhesion properties which the materials of individual components have in the processing state or by melting. Surface adhesion or fusion also occurs between the material of the shell and the components of the raw ski. In addition, the material of the casing can "mechanically" cling to the pores and recesses of the coated components.

Wie aus Fig. 1 ersichtlich, ist vor und hinter dem Schuh-Standabereich 9 je ein keilförmiger Aufsatzteil 7' ,7'' angeordnet. Eine beispielsweise Formgebung der Aufsatzteile zeigen die Fig. 4 bis 9, in denen die Maßverhältnisse von Höhe, Breite und Länge verzerrt sind. In der Praxis wird im Verhältnis zur dargestellten Hohe der Aufsatzteile von z.B. 8 mm (hinterer Aufsatzteil 7', Fig. 4 bis 6) bzw. von z.B. 10 mm (vorderer Aufsatzteil 7'', Fig. 7 bis 9) die Breite etwas größer (hinterer Aufsatzteil 7' z.B. 58 mm, vorderer Aufsatzteil 7'' z.B. 55 mm) und die Länge erheblich größer sein (hinterer Aufsatzteil z.B. 230 mm, vorderer Aufsatzteil z.B. 240 mm). Beim hinteren Aufsatzteil 7' nimmt die Breite der Oberseite gegen die Skimitte hin ab (bei gleichbleibender Breite der Grundfläche des Aufsatzteiles), beim vorderen Aufsatzteil 7'' nimmt sowohl die Breite der Oberseite als auch die Breite der Grundfläche gegen die Skimitte hin ab. Die Seitenflächen und Stirnflächen der Aufsatzteile 7' ,7'' sind von oben nach unten divergierend abgeschrägt.As can be seen from FIG. 1, a wedge-shaped attachment part 7 ′, 7 ″ is arranged in front of and behind the shoe stand area 9. An example of the shape of the attachment parts is shown in FIGS. 4 to 9, in which the dimensional relationships of height, width and length are distorted. In practice, the relationship for the illustrated height of the attachment parts of, for example, 8 mm (rear attachment part 7 ', FIGS. 4 to 6) or, for example, 10 mm (front attachment part 7'', FIGS. 7 to 9), the width is somewhat larger (rear attachment part 7', for example 58 mm, front attachment part 7 '' e.g. 55 mm) and the length can be considerably longer (rear attachment part e.g. 230 mm, front attachment part e.g. 240 mm). With the rear attachment part 7 ', the width of the upper side decreases towards the center of the ski (with the same width of the base area of the attachment part), with the front attachment part 7''both the width of the upper side and the width of the base area toward the ski center decrease. The side faces and end faces of the attachment parts 7 ', 7''are bevelled from top to bottom.

Die Hülle 8 aus elastomerem Kunststoff umschließt auch die Aufsatzteile 7',7''. Diese Hülle 8 kann, wie aus Fig. 2 und 10 ersichtlich, am Hinterski an ihrer Oberfläche ein Rippenprofil, bestehend aus mehreren in Längsrichtung des Skis verlaufenden parallelen aufragenden Rippen 10, aufweisen, wobei sich die Rippen 10 auch über Hüllenbereiche erstrecken können, unter denen sich ein Aufsatzteil 7' befindet. Die Höhe und Breite der Rippen liegt in der Größenordnung von einigen Millimetern. Die Rippen 10 erstrecken sich beim dargestellten Beispiel (Fig. 2) über eine Länge von ca. 20 % der Skilänge. Es können auch andere Längen- bzw. Teilbereiche der Hülle des Hinterskis und/oder Vorderskis mit einem Rippenprofil ausgestattet sein.The sleeve 8 made of elastomeric plastic also encloses the attachment parts 7 ', 7' '. As can be seen from FIGS. 2 and 10, this cover 8 can have a rib profile on its surface on the rear ski, consisting of a plurality of parallel upstanding ribs 10 running in the longitudinal direction of the ski, the ribs 10 also being able to extend over cover areas, among which there is an attachment part 7 '. The height and width of the ribs is on the order of a few millimeters. In the example shown (FIG. 2), the ribs 10 extend over a length of approximately 20% of the ski length. Other length or partial areas of the shell of the rear ski and / or front ski can also be equipped with a rib profile.

Ferner können in die Hülle 8, nunmehr vorzugsweise am Vorderski, Utensilien oder Boxen für Utensilien eingeformt sein, bzw. Vertiefungen zur Aufnahme von Utensilien bzw. der Boxen ausgespart sein. Diese Utensilien, Bozen bzw. Vertiefungen sind in Fig. 1 und 2 mit 11 bezeichnet. Die Utensilien bzw. deren Boxen oder die Vertiefungen können auch in den unter der Hülle 8 befindlichen Aufsatzteil 7'' ragen. Die Vertiefungen sind vom Kunststoffmaterial der Hülle 8 ausgekleidet.Furthermore, utensils or boxes for utensils can be molded into the shell 8, now preferably on the front ski, or recesses for receiving utensils or the boxes can be left out. These utensils, Bolzano or depressions are designated by 11 in FIGS. 1 and 2. The utensils or their boxes or the depressions can also protrude into the attachment part 7 ″ located under the casing 8. The depressions are lined with the plastic material of the casing 8.

Beim dargestellten Ausführungsbeispiel sind die Aufsatzteile 7 bzw. 7', 7'' über dem Obergurt 1 angeordnet. Dies ist die bevorzugte Ausführungsform, bei der insbesondere der Efekt der Optimierung der Biegelinie deutlich ausgeprägt ist. Es wäre aber auch möglich, insbesondere wenn der Obergurt aus einem Faser-Kunststoff-Laminat (Prepreg) hergestellt wird, die Aufsatzteile unter diesem Obergurt, nämlich auf der Oberseite des Kernes, vor allem aber auf der Oberseite eines über dem Kern angeordneten Zwischengurtes anzuordnen.In the illustrated embodiment, the attachment parts 7 and 7 ', 7''are arranged above the top chord 1. this is the preferred embodiment, in which in particular the effect of optimizing the bending line is clearly pronounced. However, it would also be possible, particularly if the upper belt is made from a fiber-plastic laminate (prepreg), to arrange the attachment parts under this upper belt, namely on the upper side of the core, but above all on the upper side of an intermediate belt arranged above the core.

Claims (16)

  1. A ski with a ski blank which comprises web layers (1, 2), a core (3', 3''), an outsole portion (5) and possibly steel edges (4) and which together with attachment portions (7) is encased at its top side and its side surfaces - at least from the core upwards - by a preferably one-piece sheath (8) of plastics material, characterised in that disposed in front of and behind the boot support region (9) are attachment portions (7, 7', 7'') of lightweight material which project upwardly relative to the boot support region and which are integrated in the ski blank and which are also encased by the sheath (8) which preferably comprises elastomeric plastics material.
  2. A ski according to claim 1 characterised in that the attachment portions (7, 7', 7'') which are produced in the form of separate components are glued to the ski blank layers which are disposed therebeneath and possibly thereabove.
  3. A ski according to claim 1 or claim 2 characterised in that in front of and behind the boot support region the load-bearing ski body has attachment portions (7, 7', 7'') which project upwardly relative to the boot support region and which are arranged above the upper web and which are integrated in the ski body and which are preferably glued to the upper web directly or indirectly - with the interposition of at least one intermediate layer.
  4. A ski according to one or claims 1 to 3 characterised in that the encased attachment portions (7', 7'') are of a structural height which increases in a direction towards the middle of the ski.
  5. A ski according to claim 4 characterised in that the attachment portions (7', 7'') themselves are at least partially of a wedge shape which rises towards the middle of the ski.
  6. A ski according to claim 1 to 5 characterised in that the width of the attachment portions (7', 7'') or at least the width of the top side of the attachment portions decreases towards the middle of the ski.
  7. A ski according to one of claims 1 to 6 characterised in that the side surfaces and/or end surfaces of the attachment portions (7, 7', 7'') themselves or the region of the sheath (8) which encloses the attachment portions diverge in a downward direction.
  8. A ski according to one of claims 1 to 7 characterised in that the attachment portions (7, 7', 7'') predominantly comprise foam material.
  9. A ski according to claim 7 characterised in that the foam material is a foam-fibre, in particular glass fibre, composite material.
  10. A ski according to one of claim 1 to 9 characterised in that the attachment portions (7, 7', 7'') at least predominantly comprise a lightweight material of a density of from 0.1 to 0.6 g/cm³, preferably from 0.2 to 0.3 g/cm³.
  11. A ski according to one of claims 1 to 9 characterised in that preferably in the rear part of the ski the top side of the sheath (8) or the surface covering of plastics material have a rib profile which extends over a portion of the length of the ski and which comprises a plurality of ribs (10) extending in the longitudinal direction of the ski.
  12. A ski according to claim 11 characterised in that the ribs (10) extend at least partially along sheath portions which cover attachment portions (7').
  13. A ski according to one of claims 1 to 11 characterised in that preferably in the front part of the ski implements or boxes for implements are formed in the sheath (8) or the surface covering of plastics material or recesses for receiving implements (11) are provided therein.
  14. A ski according to claim 13 characterised in that the implements or the implement boxes or the recesses therefor project into the attachment portions (7'').
  15. A ski according to one of claims 1 to 13 characterised in that the sheath (8) or the surface covering zone-wise comprises different plastics materials, wherein the zones of different plastics materials are joined together in material-interconnecting relationship.
  16. A process for the production of a ski according to one of claims 1 to 15 characterised in that the rough ski which comprises web layers (1, 2), a core (3', 3''), an outsole portion (5) and possibly steel edges (4) as well as attachment portions (7, 7', 7'') is introduced into a mould whereupon after closure of the mould the plastics material or the components of the plastics material of the sheath (8) is or are introduced possibly under pressure into the refining mould cavity corresponding to the sheath (8) in such a way that the plastics material of the sheath (8) encloses both the top side and side surfaces of the attachment portions (7, 7', 7'') and also the other regions of the top side and side surfaces of the ski.
EP91900665A 1989-12-22 1990-12-20 Ski and process of manufacturing such a ski Expired - Lifetime EP0460150B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0292189A AT398380B (en) 1989-12-22 1989-12-22 SKI, ESPECIALLY ALPINSKI, AND METHOD FOR THE PRODUCTION THEREOF
AT2921/89 1989-12-22
PCT/AT1990/000125 WO1991009653A1 (en) 1989-12-22 1990-12-20 Ski

Publications (2)

Publication Number Publication Date
EP0460150A1 EP0460150A1 (en) 1991-12-11
EP0460150B1 true EP0460150B1 (en) 1995-05-31

Family

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Family Applications (1)

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EP91900665A Expired - Lifetime EP0460150B1 (en) 1989-12-22 1990-12-20 Ski and process of manufacturing such a ski

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EP (1) EP0460150B1 (en)
JP (1) JPH04505872A (en)
AT (2) AT398380B (en)
DE (1) DE59009187D1 (en)
WO (1) WO1991009653A1 (en)

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AT397209B (en) * 1990-09-27 1994-02-25 Rohrmoser Alois Skifabrik SKI WITH A SPATIAL PROFILED TOP
FR2683734B1 (en) * 1991-11-19 1994-01-07 Rossignol Sa SKI IN SHAPE, NON-RECTANGULAR SECTION.
FR2686520B1 (en) * 1992-01-28 1994-04-15 Salomon Sa SKI DEVELOPMENT INCLUDING A CENTRAL SURFACE PLATFORM.
USRE36453E (en) * 1993-04-16 1999-12-21 Skis Rossignol S.A. Ski including sides and an upper shell
FR2704442B1 (en) * 1993-04-27 1995-06-02 Rossignol Sa New type of ski.
FR2704440B1 (en) * 1993-04-30 1995-07-28 Salomon Sa SNOWBOARD, ESPECIALLY SNOW SURF.
DE19652779A1 (en) 1996-12-19 1998-06-25 Marker Deutschland Gmbh Snowboard
DE29706716U1 (en) 1997-04-14 1997-06-19 F2 Int Gmbh Snowboard
US6520529B1 (en) * 1999-09-29 2003-02-18 K-2 Corporation Integrated modular glide board
US6612605B2 (en) 1999-09-29 2003-09-02 K-2 Corporation Integrated modular glide board
FR2800622B1 (en) * 1999-11-05 2002-02-08 Salomon Sa SNOWBOARD FOR SNOW SURFING
FR2808698B1 (en) * 2000-05-10 2002-10-11 Salomon Sa SKI PLANNED FOR THE PRACTICE OF ALPINE SKIING
FR2825646B1 (en) 2001-06-08 2003-10-17 Salomon Sa SKI PLANNED FOR THE PRACTICE OF ALPINE SKIING
DE102005049478B4 (en) * 2005-10-13 2015-04-02 Marker Völkl International GmbH Snowboarding board, especially snowboard

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FR1033316A (en) * 1951-03-02 1953-07-09 Michal Atel Improvements to skis
FR1528773A (en) * 1967-03-13 1968-06-14 Improvement of skis and their bindings
AT286842B (en) * 1968-09-30 1970-12-28 Haldemann S A ski
AT351415B (en) * 1977-02-04 1979-07-25 Kaestle Gmbh CROSS-COUNTRY SKI
JPS58163385A (en) * 1982-03-20 1983-09-28 美津濃株式会社 Injection ski plate and production thereof
JPS59166174A (en) * 1983-02-04 1984-09-19 美津濃株式会社 Ski board
JPS59166173A (en) * 1983-02-04 1984-09-19 美津濃株式会社 Ski board
JPS6021775A (en) * 1983-07-19 1985-02-04 美津濃株式会社 Production of injection ski board
ATA325883A (en) * 1983-09-13 1984-12-15 Rohrmoser Alois Skifabrik SKI
FI861171A (en) * 1986-03-20 1987-09-21 Karhu Titan Oy FOERFARANDE FOER TILLVERKNING AV EN SKIDA OCH EN SKIDA.
FR2620628B2 (en) * 1987-02-27 1994-08-19 Salomon Sa PROCESS FOR REALIZING A SKI AND SKIING DOES ACCORDING TO THIS PROCESS
DE3908683A1 (en) * 1988-03-18 1989-10-19 Fritz Grill Ski with an add-on device

Also Published As

Publication number Publication date
DE59009187D1 (en) 1995-07-06
AT398380B (en) 1994-11-25
ATA292189A (en) 1994-04-15
JPH04505872A (en) 1992-10-15
ATE123232T1 (en) 1995-06-15
WO1991009653A1 (en) 1991-07-11
EP0460150A1 (en) 1991-12-11

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