EP0993325B1 - Planche pour la glisse sur la neige - Google Patents

Planche pour la glisse sur la neige Download PDF

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Publication number
EP0993325B1
EP0993325B1 EP98928047A EP98928047A EP0993325B1 EP 0993325 B1 EP0993325 B1 EP 0993325B1 EP 98928047 A EP98928047 A EP 98928047A EP 98928047 A EP98928047 A EP 98928047A EP 0993325 B1 EP0993325 B1 EP 0993325B1
Authority
EP
European Patent Office
Prior art keywords
materials
light
snowboard
core
reinforcing materials
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
EP98928047A
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German (de)
English (en)
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EP0993325A1 (fr
Inventor
Jürg Kunz
Peter Martin
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.)
Dakuga Holding Ltd
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Dakuga Holding Ltd
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Publication date
Application filed by Dakuga Holding Ltd filed Critical Dakuga Holding Ltd
Publication of EP0993325A1 publication Critical patent/EP0993325A1/fr
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/126—Structure of the core
    • 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

Definitions

  • the invention relates to a snow sliding board and a method for the same Production according to the preambles of the independent claims.
  • snow sliding boards such as B. Alpine, cross-country, telemark or jump skis, big feet, snowboards, etc.
  • B. Alpine, cross-country, telemark or jump skis big feet, snowboards, etc.
  • the latter differ in their structure and use from most other snow sliding boards.
  • Snowboards are wider than that other snow sliding boards. While most skis individually on one leg of the skier and therefore for use in pairs only one snow gliding board is needed to drive, which, unlike other snow sliding boards, has two binding attachment areas having. These binding attachment areas in turn point in contrast to other snow sliding boards, integrated shots of the Binding on, so-called inserts.
  • a disadvantage of known snow sliding boards is their relatively high mass density of over 900 kg / m 3 and the resulting high weight.
  • For snowboards with typical dimensions such as 1500 mm length, 290 mm maximum width and 10 mm maximum thickness, this results in dead weights of over 3.2 kg.
  • Such heavy snowboards are tedious to carry, they have to be driven with great effort and they are slow to react when changing direction.
  • snow sliding boards with a low weight are aimed for, so-called light boards or light boards.
  • a solution for the construction of light boards is disclosed in the patent specification CH-686 028.
  • a light core with a density of not more than 400 kg / m 3 When using a light core with a density of not more than 400 kg / m 3 , light snowboards with average densities of at most 850 kg / m 3 are obtained .
  • Honeycomb materials or fiber-reinforced rigid foam are proposed as light core materials.
  • a first disadvantage of such light snow sliding boards concerns the absorption capacity of shear stresses between the outer layers and a low one Shear stiffness and the relatively poor damping behavior Vibrations and blows.
  • Shear stresses arise, for example the bending of the snow sliding board caused by shear stress and affect its resistance to deformation or breaking and the driving properties. Vibrations and impacts come from external disruptive factors such as Uneven slopes and bumps and reduce the smoothness and the Kantensriff.
  • Light core materials have low shear strength and a low thrust module, so that there is an imminent risk of breakage and cracking consists. Furthermore, (unreinforced) light boards dampen impacts badly from.
  • a second disadvantage of light snow sliding boards concerns the pressure resistance.
  • Light core materials have a low compressive strength, they are compressible.
  • the compressive strength of honeycomb structures is high deflection of the component is greatly reduced. As a result, it changes the distance of the straps from each other, which in turn has a negative impact has the rigidity, the strength and the bending strength.
  • a third disadvantage of light snow gliding boards concerns power transmission on the snow.
  • the document FR-2 667 536 discloses a snow sliding board in a layered construction with a core which contains a zone with a honeycomb structure which extends over its entire thickness and the rest of which is formed by a polymer mixture.
  • This snow sliding board also has the disadvantages described above - in particular low absorption capacity of shear stresses, low shear and pressure resistance.
  • the core is produced separately by placing the honeycomb structure in a mold and overmolding with the polymer mixture. After the core has been manufactured, the snow gliding board must be assembled from the core and other components. This multi-stage manufacturing process is complex and costly.
  • DE 295 16 548 on the side of the preamble of claim 1 report and DE 196 04 016 show two further snow sliding boards.
  • the invention relates to snow sliding boards such as skis, big feet, snowboards, etc., but in particular to snowboards.
  • the idea according to the invention consists in the development of lightweight components for static and dynamic types of loads such as those for Snow sliding boards occur.
  • This sandwich composite lightweight construction allows high dynamic Withstand bending and compressive loads.
  • the reinforcement materials higher strength are in areas of very light core materials admitted. It is advantageous to form a core matrix, in which mainly take on very light core materials and with locally attached reinforcement materials of higher strength Bending, compressive and shear loads are stabilized.
  • the resulting very light snow sliding board is characterized by a high shear and pressure resistance, because the reinforcement materials of higher strength are embedded in recesses of the very light core materials in accordance with the main directions of stress, in order to increase the core shear modulus, the core shear strength, the core pressure resistance, the component rigidity and the component strength increase.
  • very light core materials such as honeycomb materials such as phenolic resin-impregnated aramid paper (Nomex), polyetherimide (PEI) tubular honeycomb, or foamed plastics, with reinforcing materials of higher strength such as thermoplastic plastics, e.g. B. poyamides, polyimides or polystyrenes, fiber-reinforced plastics, for. B.
  • GRP glass fiber reinforced plastics
  • CFRP carbon fiber reinforced plastics
  • ABS acrylonitrile butadiene styrene
  • wood or metals The following table gives typical strength values for some of the above materials. Accordingly, the reinforcement materials used have strikingly higher strengths than the light materials used; So it makes sense to call them higher strength materials.
  • MPa Compressive strength
  • MPa Shear strength
  • MPa Shear modulus
  • Density (kg / m 3 ) light material
  • the individual components of the core are preferably in one with all other parts of the snow sliding board Formed and glued to the finished product in a single step.
  • the Functional kernel is therefore not preceded by a separate process manufactured, but the components only have to be pre-assembled accordingly become.
  • the individual areas have proven to be particularly suitable with each other and the areas with ends and with cover straps by means of to glue the known prepreg process.
  • a snow gliding board for example a snowboard
  • a snowboarder exerts two forces F1, F2 on the snowboard with his two feet.
  • a bending of the snowboard leads to a pressure s1 on an upper side 2 and a pull s2 on a lower side 3 of the snowboard.
  • a thrust s3 can also act.
  • FIGS. 2 to 5 show longitudinal sections parallel to the base surface 3 of the snow sliding board through parts of exemplary embodiments of the present invention. All of these embodiments have in common that they relate to a snow sliding board in the embodiment of a snowboard. Of course, the idea according to the invention, even if not explicitly shown, can also be applied to other snow sliding boards such as skis or big feet, etc.
  • Figures 2 to 7 show longitudinal sections through the snow sliding board and through its core 1 , which consists of several areas of different materials.
  • FIGS. 2 to 5 show a core matrix, comprising areas 11, 13 made of light material and a large number of more or less symmetrically arranged, more or less large and more or less mosaic-like inner areas 12.1, 12.2 ... and delimiting outer webs 14, 15 made of reinforcing material.
  • the areas can be more or less large, they can, but do not have to be connected to one another and they can be of any shape.
  • the person skilled in the art has almost unlimited design options for a core matrix. It is generally the case that areas of reinforcement material are selectively attached in terms of size and orientation so that the orientation of the reinforcement materials corresponds to the loading directions of the snow sliding board.
  • the dimensioning ie the relative size of the individual areas 11, 12.1, 12.2, ..., 13, 14, 15 and the front ends 45 and rear ends 54 is freely adjustable.
  • Figures 2, 4 and 5 show relatively narrow outer webs 14, 15 and relatively short front ends 45 and rear ends 54 , while the intermediate regions 11, 13 occupy relatively large areas or volumes.
  • the inner area is practically reduced to binding bases 12.1, 12.2 .
  • These variations in dimensioning take into account user wishes and lead to snow sliding boards that are differently stiff, more or less light and differently spritzig and maneuverable.
  • these variations in dimensioning take into account the light and strengthening materials used. Particularly high-strength materials require smaller areas or volumes than normal high-strength materials.
  • the weight reduction is approximately 20-40% compared to snowboards with a standard construction with conventional core materials such as wood with an average density of approx. 600 kg / m 3 .
  • the high-strength reinforcing materials do not necessarily have to be laid flat or two-dimensionally in recesses of the very light core materials, as described previously, but they can also be looped three-dimensionally as tabs through slotted core materials. An exemplary embodiment of this is shown in FIG. 9 .
  • the material of the straps 20, 30 can be high-strength reinforcing material.
  • Tabs 20.1, 20.2 made of high-strength belt material allow a direct connection from the tension belt 30 to the compression belt 20.
  • the reinforcing materials serve to absorb forces acting between the tension belt 30 and the compression belt 20 .
  • areas 12.1, 12.2, ..., 14, 15 made of reinforcing materials enable the snow sliding board to be subjected to high bending loads.
  • the areas 12.1, 12.2, ..., 14, 15 made of reinforcing materials also serve as local reinforcements for application-specific purposes, for example to form binding bases 12.1, 12.2 and to support the steel edges 40 .
  • Other possible uses, not listed here, of locally reinforcing materials are of course possible.
  • the areas made of reinforcing materials stabilize the areas made of light materials when the snow sliding board is subjected to dynamic bending stress.
  • the shear and compressive strength of the light materials drastically decrease under bending stress, for example because the cell walls of a honeycomb are no longer perpendicular to the load plane during bending and shear displacement.
  • This low shear characteristic of the load-bearing lightweight materials is avoided by local integration of the reinforcement materials, which are resistant to shear even under bending stress; the honeycombs are thus stabilized even under high bending loads.
  • This core matrix which is reinforced and stabilized in a mosaic-like manner according to the loading directions of the snow sliding board, only enables the successful use of light materials with low shear characteristics.
  • areas 12.1, 12.2,..., 14, 15 made of reinforcing materials are connected to one another with high strength via front and rear ends 45, 54 made of reinforcing materials.
  • Areas 12.1, 12.2, ..., 14, 15, 45, 54 made of high-strength reinforcing materials can be connected together in a closed manner.
  • this sandwich composite structure has a high shear modulus in the longitudinal direction, it is very pressure and bending resistant.
  • this snow sliding board has a high torsional rigidity and it has a high damping behavior. Its component rigidity and component strength are increased.
  • GRP Glass fiber reinforced plastics
  • CFRP carbon fiber reinforced plastics
  • ABS acrylonitrile butadiene styrene
  • wood etc. are advantageously used as reinforcing materials. This list is not exhaustive. With knowledge of the present invention, the person skilled in the art can also use other reinforcing materials such as metals, for example steel and / or aluminum.
  • the light core materials serve to keep the weight of the snow sliding board low.
  • Materials with cavities such as honeycomb materials with typical cell diameters of 3 to 10 mm or closed cells with a density of not more than 400 kg / m 3 are advantageously used as light materials.
  • honeycomb materials with typical cell diameters of 3 to 10 mm or closed cells with a density of not more than 400 kg / m 3 are advantageously used as light materials.
  • FIG. 7 shows a partially disclosed view of a honeycomb-shaped light core material 6 between a tension belt 30 and a compression belt 20 .
  • the honeycomb material 6 consists of a plurality of preferably prismatic cells 6.1, 6.2, ... with, for example, hexagonal or round cross-section, the axes a of which are preferably perpendicular to the longitudinal axis A of the snow sliding board.
  • Various honeycomb materials 6 made of metallic materials such as aluminum, or of non-metallic materials such as plastics such as polypropylene (PP), polycarbonate (PC), polyetherimide (PEI) or phenolic resin-impregnated aramid paper (Nomex) etc. are commercially available.
  • Honeycomb materials 6 are preferred not only because of their low density, but also because of their extraordinary weight-specific compressive strength. In the direction of the cell axes a, the honeycomb materials are hardly compressible, that is to say highly pressure-resistant, but have a relatively low shear modulus or a relatively low shear strength compared to conventional core materials. This also applies to alternative light materials, such as foamed, non-reinforced plastics.
  • honeycomb materials 6 but also of other light materials such as plastics, synthetic fibers, prepregs, etc.
  • Other processing methods of honeycomb materials and light materials as well as other ultrasonic cutting methods are of course applicable.
  • a CNC-controlled ultrasonic cutting with CAD interface is advantageous, which allows a quick and economical cutting and which allows rapid changes for cutting variations.
  • the precision of the cut in series production is, for example, with a contour accuracy of approximately +/- 0.2 mm. It is also advantageous that there is no heat and media exposure during cutting, which is disadvantageous in other cutting methods such as laser and water jet cutting, since cut edges can be deformed, damaged and contaminated.
  • honeycomb materials are also usable with higher density or they are also honeycomb materials usable with smaller or larger cell diameters.
  • Cavities of the light materials can also be filled locally with strengthening materials so as to act locally as a reinforcing material in the sense of the invention.
  • strengthening materials are foams and pastes made of plastic, such as polyurethane (PUR) or GRP, ABS or metal, wood, etc.
  • cavities of the light materials, such as honeycomb materials 6 can be locally filled with viscoelastic materials so as to be locally viscoelastic and to dampen vibrations and impacts quickly.
  • the permanent stable connection of the individual areas 11, 12.1, 12.2, ..., 13, 14, 15 with each other, as well as with front and rear ends 45, 54 , and with cover straps 20, 30 is advantageously by gluing, for example by means of the known prepreg -Procedure carried out.
  • Prepregs are reinforcing materials that are soaked with pre-reacted thermosets or thermoplastics before being joined.
  • thermosetting thermosetting epoxy resins are used as the prepreg matrix.
  • Flat sandwich components can be manufactured relatively economically, for example in the pressing process. Sandwich components consist of relatively thin outer layers and a relatively thick but light core. The cover layers are mostly high-strength belt materials that are glued to the core materials with high compressive strength and low weight.
  • the tough, elastic prepreg matrix and the use of a formable bedding matrix open up a wide range of component design options.
  • the polyaddition of Resin and hardener is strong on the temperature level, the pressing pressure and depending on the exposure time.
  • the use of prepreg ensures uniform resin content in the sandwich composite and high reproducibility the connection. Flexibility is also important. So can on a press simultaneously different molded parts with accordingly milled tools.
  • the prepreg process used here occurs immediately after the Curing of practically finished parts; it is characterized by a low manufacturing effort in part preparation and post-processing such as deburring, Smoothing, painting, etc. In particular, graphically designed Surfaces can be glued without additional effort.
  • the one used here Prepreg process is not different on joining Light materials and reinforcement materials to a flat (two-dimensional) Sandwich components limited, but also allows one economical sandwich lightweight construction of three-dimensional parts. For example a combination with the pressure bag method is possible, so that a Pressure bag is either integrated in the molded part or locally in the tool and an even pressure transfer in three dimensions (on all levels) he follows.
  • connection techniques examples include wet lamination, reaction injection molding (RIM) technology, Resin Transfer Molding (RTM) process or a Gluing with adhesive films, adhesive films, adhesive-coated laminates made of plastics or fiber-reinforced plastics such as GRP, CFRP, ABS, PFK made of metals such as aluminum etc. listed.
  • RIM reaction injection molding
  • RTM Resin Transfer Molding
  • Gluing with adhesive films, adhesive films, adhesive-coated laminates made of plastics or fiber-reinforced plastics such as GRP, CFRP, ABS, PFK made of metals such as aluminum etc. listed.

Landscapes

  • Laminated Bodies (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Road Paving Structures (AREA)

Claims (7)

  1. Surf des neiges avec un coeur (1) entre une sangle inférieure et une sangle supérieure (20, 30), le coeur (1) présentant au moins une partie en matériaux légers (11, 13) et au moins une partie en matériaux de renfort (12.1, 14, 15) et des moyens de liaison (12.1) pour la fixation, caractérisé par le fait que dans la région des extrémités antérieure et postérieur du surf des neiges, des parties limitées localement à ces zones (12.21, 12.22, 12.31, 12.32, 12.41, 12.42, 12.51, 12.52, 12.5, 12.6, 12.71, 12.72, 12.81, 12.82, 12.9) en matériau de renfort sont disposées et entourées de matériau léger.
  2. Surf des neiges selon la demande 1, caractérisé par le fait que des parties (12.21, 12.22, 12.31, 12.32, 12.41, 12.42, 12.51, 12.52, 12.5, 12.6, 12.71, 12.72, 12.81, 12.82, 12.9) consistent en matériau de renfort et qu'au moins une partie intermédiaire (11, 13) consiste en matériaux légers, les matériaux légers se chargeant de fonctions porteuses et les matériaux de renfort stabilisant les matériaux légers contre les sollicitations au cisaillement et à la compression.
  3. Surf des neiges selon la demande 1 ou 2, caractérisé par le fait que des parties (12.21, 12,22, 12.31, 12,32, 12.41, 12.42, 12.51, 12.52, 12.5, 12.6, 12.71, 12.72, 12.81, 12.82, 12.9) en matériau de renfort soient disposées de manière ciblée dans leur grandeur et leur alignement de telle sorte que l'orientation des matériaux de renfort concorde avec les directions principales de sollicitation du surf des neiges.
  4. Surf des neiges selon l'une des demandes 1 à 3, caractérisé par le fait que les matériaux légers possèdent une densité ne dépassant pas 400 kg/m3 et que les matériaux légers en nid d'abeilles (6) sont dirigés de façon que leurs cellules (6.1, 6.2) soient perpendiculaires à l'axe longitudinal (A) du surf des neiges.
  5. Surf des neiges selon l'une des demandes 1 à 4, caractérisé par le fait que les matériaux de renfort sont des matières plastiques à haute résistance renforcées de fibres de verre et/ou des matières plastiques renforcées de fibres de carbone et/ou des métaux et/ou du bois.
  6. Surf des neiges selon l'une des demandes 1 à 5, caractérisé par le fait que les languettes (20.1, 20.2) en matériau de sangle sont passées en boucle à travers les matériaux légers (13) munis d'ouvertures oblongues et que la sangle inférieure (30) et la sangle supérieure (20) sont reliées directement.
  7. Surf des neiges selon l'une des demandes 1 à 6, caractérisé par le fait que le surf des neiges est, en raison du rapport entre les matériaux légers et les matériaux de renfort, de 20% à 40% plus léger qu'une construction standard comparable.
EP98928047A 1997-06-30 1998-06-30 Planche pour la glisse sur la neige Expired - Lifetime EP0993325B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH157097 1997-06-30
CH157097 1997-06-30
US5186597P 1997-07-07 1997-07-07
US51865P 1997-07-07
PCT/CH1998/000284 WO1999001186A1 (fr) 1997-06-30 1998-06-30 Planche pour la glisse sur la neige

Publications (2)

Publication Number Publication Date
EP0993325A1 EP0993325A1 (fr) 2000-04-19
EP0993325B1 true EP0993325B1 (fr) 2002-10-09

Family

ID=25688026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98928047A Expired - Lifetime EP0993325B1 (fr) 1997-06-30 1998-06-30 Planche pour la glisse sur la neige

Country Status (6)

Country Link
EP (1) EP0993325B1 (fr)
JP (1) JP2002507139A (fr)
AT (1) ATE225676T1 (fr)
CA (1) CA2294210A1 (fr)
DE (1) DE59805906D1 (fr)
WO (1) WO1999001186A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2378961A (en) * 2001-08-23 2003-02-26 Steven Edward Neal Composite structure with fibres orientated along primary stress lines
DE502005002305D1 (de) * 2005-08-27 2008-01-31 Klaus Plenk Snowboard- oder Skikern
FR2956035B1 (fr) * 2010-02-05 2012-08-03 Rossignol Sa Planche de glisse sur neige avec des chants de largeur variable
FR2983415B1 (fr) * 2011-12-05 2015-02-20 Rossignol Sa Element de structure de planche de glisse sur neige, et planche de glisse incorporant un tel element
EP3248660B1 (fr) * 2016-05-23 2019-09-11 Smartpolymer GmbH Couche de pcm proche de la semelle de glisse dans la structure composite d'une planche de glisse (ski)
CN108970095B (zh) * 2018-08-22 2024-04-30 惠州市杰诚运动器材有限公司 高强度耐磨滑板
US20220126192A1 (en) * 2019-02-01 2022-04-28 Pda Ecolab, Sas Sliding board with corrugated mediums
US11452931B2 (en) * 2019-03-08 2022-09-27 Völkl Sports Gmbh Sliding board with fiber composite material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667536A1 (fr) 1990-10-08 1992-04-10 Lacroix Sa Skis Procede de fabrication d'un noyau ou d'une partie longitudinale du noyau d'un patin stratifie pour sports de glisse, noyau fabrique selon le procede, et patin incorporant un tel noyau.
CH686028A5 (de) 1994-05-31 1995-12-15 Urs P Meyer Snowboard in Mehrschichtenbauweise
DE9411810U1 (de) * 1994-07-21 1994-09-22 Usp Markeing & Vertriebs Gmbh Snowboard
AT422U1 (de) * 1994-10-20 1995-10-25 Kaestle Ag Snowboard und verfahren zu seiner herstellung
DE19604016C2 (de) * 1995-07-18 1998-01-15 Yonex Kk Snowboard
AT405139B (de) 1995-08-14 1999-05-25 Atomic Austria Gmbh Gleitgerät

Also Published As

Publication number Publication date
DE59805906D1 (de) 2002-11-14
EP0993325A1 (fr) 2000-04-19
JP2002507139A (ja) 2002-03-05
WO1999001186A1 (fr) 1999-01-14
CA2294210A1 (fr) 1999-01-14
ATE225676T1 (de) 2002-10-15

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