EP0344146B1 - Ski mit Dämpfungslagen - Google Patents

Ski mit Dämpfungslagen Download PDF

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Publication number
EP0344146B1
EP0344146B1 EP89890152A EP89890152A EP0344146B1 EP 0344146 B1 EP0344146 B1 EP 0344146B1 EP 89890152 A EP89890152 A EP 89890152A EP 89890152 A EP89890152 A EP 89890152A EP 0344146 B1 EP0344146 B1 EP 0344146B1
Authority
EP
European Patent Office
Prior art keywords
ski
layer
multilayer
slot
outer layer
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
EP89890152A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0344146A2 (de
EP0344146A3 (en
Inventor
Bernhard Dr. Mayr
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.)
Head Sport GmbH
Original Assignee
Head Sport GmbH
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 Head Sport GmbH filed Critical Head Sport GmbH
Publication of EP0344146A2 publication Critical patent/EP0344146A2/de
Publication of EP0344146A3 publication Critical patent/EP0344146A3/de
Application granted granted Critical
Publication of EP0344146B1 publication Critical patent/EP0344146B1/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
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/128—A part for the binding being integrated within the board structure, e.g. plate, rail, insert
    • 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
    • A63C5/122—Selection of particular materials for damping purposes, e.g. rubber or the like

Definitions

  • the invention relates to a multi-layer ski with a top flange, which consists at least over part of the length of the ski from at least two layers connected to one another with the interposition of a viscoelastic or viscous damping layer, a core and a tread.
  • Multi-layer skis with laminates that are connected to one another over a large area have good torsional rigidity with rigid bonding, while at the same time having good strength properties and bending properties.
  • a ski of the type mentioned at the outset in which the upper flange consists of two metallic layers connected to one another with the interposition of a full-surface elastic layer over the entire length of the ski, has become known, for example, from US Pat. No. 2,995,379.
  • skis are torsionally rigid on the one hand, but on the other hand flexible, places different demands on the load-bearing capacity of the composite construction in different axes and, as is known in multi-layer skis, full-surface bonding of individual layers to one another is unsuitable for vibrations if appropriate torsional rigidity is to be ensured , in particular to dampen transverse vibrations.
  • the invention now aims to provide a multi-layer ski of the type mentioned at the beginning, with which it becomes possible to better dampen low-frequency vibrations of skis, which have a negative impact on skiing behavior, and thus to create a multi-layer ski with improved skiing properties.
  • the ski according to the invention essentially consists in that the outer layer of the region of the upper flange having at least three layers has at least one slit running transversely to the longitudinal direction of the ski and that the slit towards the core from the lower layer of the upper flange with the interposition of the viscoelastic or viscous damping layer is overlapped.
  • the outer layer of at least three-layer region of the upper flange has at least one slot running transversely to the longitudinal direction of the ski, the deflection of the ski is promoted and good bending elasticity is ensured despite correspondingly more rigid materials.
  • the purpose of the lower layer overlapping the slot is to compensate for the loss of rigidity and strength corresponding to the slot and to maintain the desired torsional rigidity.
  • the stiffness curve of the ski should run as evenly as possible and should have no discontinuities.
  • the viscoelastic or viscous damping layer is now arranged in this partial area between the outer slotted layer and the underlying inner layer, sufficient flexural elasticity can be achieved and, on the basis of the choice of a viscoelastic or viscous damping layer, also a damping of the low-frequency vibrations, in particular of vibrations in the range of 15-150 Hz.
  • the design is such that the three-layer top chord, which extends at least over a portion of the length of the ski, is connected in the direction of the ski core with a continuous laminate, in particular an aluminum layer or a fiber-reinforced plastic laminate, such a design providing adequate torsional rigidity with sufficient flexibility, bending elasticity and bending strength. Furthermore, such continuous laminates are particularly important for the breaking strength of the ski.
  • the outer layer of the three-layer top chord advantageously also consists of aluminum or steel or thermoplastic and / or thermosetting composites with glass, carbon, aramid, Boron fiber reinforcement and on this outer layer of the three-layer top flange a conventional cover layer can optionally be applied, which remains of subordinate importance for the strength properties and the torsional rigidity of the ski.
  • the lower layer of the three-layer top chord must also have sufficient strength to be able to interact with the viscoelastic layer in between while exerting shear forces.
  • the design is such that the layer (s) overlapping the slot (s) of the outer layer with the interposition of the viscoelastic or viscous damping layer is designed as an aluminum layer or fiber-reinforced plastic laminate, with a total of two relatively stable structures in the three-layer structure Have load distribution layers formed, via which the shear forces are introduced into the viscoelastic layer.
  • the design according to the invention is advantageously made such that the viscoelastic or viscous intermediate layer made of an elastomeric plastic with a modulus of elasticity of 10 10 to 1010Pa, preferably approx. 108Pa and a loss factor tan ⁇ > 0.8, preferably a tan ⁇ of approx. 1.5.
  • a, especially rubber-elastic material with a modulus of elasticity between 107 and 1010Pa and the specified loss factors differs significantly from hard rubber layers already used in ski constructions and is able to optimally use frequencies between 15 and 150 Hz in a temperature range of -35 ° to + Steam at 10 ° C.
  • the design is advantageously made such that the viscoelastic or viscous layer has a thickness of 0.3-2.5 mm, preferably 0.7-1.3 mm.
  • the design according to the invention is advantageously made such that the outer, at least one cross-section having layer in the region of the binding parts in the ski longitudinal direction openings or elongated holes for receiving fastening screws or bolts for the binding parts.
  • Such elongated holes or openings running in the longitudinal direction of the ski allow the sliding attachment of binding parts to the internal load-bearing parts of a ski and do not hinder the introduction of shear forces into the viscoelastic layer and the pushing movement of the upper laminate.
  • the training in the assembly of the binding parts is advantageously made such that the binding parts are connected to the outer layer of the ski with the interposition of a sliding layer or with the formation of an air gap.
  • the slit (s) provided in the outer layer which runs transversely to the longitudinal direction of the ski, is intended to ensure unhindered transmission of shear forces that occur when the ski vibrates or deflects to the viscoelastic damping layer, for which training with
  • the advantage is such that the transverse slot (s) of the outer layer extends to the side edge of the ski.
  • the design is preferably such that the transverse slot (s) in the outer layer extend (s) throughout the entire width of the outer layer.
  • the slot (s) extending transversely to the longitudinal direction of the ski are each arranged in a vibration node of the vibrations of the ski, which results in optimal damping properties.
  • the slots can be made over the entire length of the ski.
  • the position of the vibration nodes depends on the type (mode) of the natural vibration (fundamental vibration, 1st, 2nd, 3rd, ... (harmonic). This in turn depends on the stiffness, distribution of stiffness, weight distribution, clamping, etc. of the ski Depending on the intended use of the ski, different natural frequencies of the ski can be excited, whereby certain frequencies in turn can have a disruptive effect on the skiing behavior of the ski.
  • the damping property of the viscoelastic or viscous intermediate layer is influenced by the thickness of the intermediate layer, the length and width of the intermediate layer, the position on the ski and the number of dampers on the ski and can therefore be set within wide limits according to the requirements.
  • the design is such that the width of the slot (s) in the longitudinal direction of the ski is 0.7 to 2.5 mm, preferably approximately 1.5 mm, whereby the maximum thrust movements occurring are taken into account.
  • the procedure is preferably such that the slot (s) is (are) filled with a damping material, the damping being effected by pressure deformation of the damping material in the slot.
  • FIG. 1 shows a plan view of a ski according to the invention
  • 2 shows a side view of the ski with the binding installed
  • 3 shows an enlarged detailed illustration of FIG. 2
  • FIG. 4 shows a section along the line IV-IV of FIG. 1.
  • FIG. 1 schematically shows a ski 1 according to the invention, which has transverse slots 2 running transversely to the longitudinal direction of the ski and extending over the entire width of the ski.
  • transverse slots 2 running transversely to the longitudinal direction of the ski and extending over the entire width of the ski.
  • Several oblong holes 3 are provided in the ski surface for receiving fastening screws or bolts for the binding parts.
  • FIG. 2 shows a side view of the ski 1 according to the invention, from which the assembly of a binding 4 in the elongated holes 3 provided in the ski surface can be seen schematically.
  • the binding parts 4 are hiebei fixed by forming an air gap 5 through the elongated holes 3 in the inner load-bearing parts of the ski 1, so that the installation of the binding parts does not impede the introduction of shear forces into the ski's damping layer.
  • the outer layer 6 of the made of aluminum or steel or thermoplastic and / or thermosetting composites with glass, carbon, aramid, boron fiber reinforcement
  • the upper flange like the conventional cover layer 7 of the ski lying above it, has slots 2 which extend across the entire width of the ski. These slits 2 are overlapped by a further layer formed from aluminum or a fiber-reinforced plastic laminate 9 with the interposition of a viscoelastic damping layer 8. Below this layer 9, which is made of aluminum or fiber-reinforced plastic laminate, there is a further layer 10 made of such materials, which overlaps stretches the entire length of the ski. This configuration forms at least two relatively stable load distribution layers which are suitable for absorbing shear forces.
  • the actual ski core is designated 11 in FIG.
  • FIG. 4 shows a cross section through the ski according to the invention.
  • the outer layer is again designated by 6, and the conventional top layer of the ski lying above is indicated schematically by 7.
  • the layer 6 is interrupted in this embodiment by an elongated hole 3 for receiving bolts or screws for mounting the binding.
  • a viscoelastic damping layer 8 which is intended to absorb the low-frequency vibrations which occur in particular when driving.
  • the second aluminum layer or the layer formed from fiber-reinforced plastic laminate, which overlaps the elongated holes or the transverse slots in layer 6, as well as the underlying one, which extends across the entire length of the ski and is made of the same or different than the slit laminate Material made layer are again indicated in Figure 4 with 9 and 10.
  • the lower flange 12 of the ski which is also formed from aluminum or fiber-reinforced plastic laminate, lies under the ski core 11.
  • a tread 13 and steel edges 14 are arranged in a conventional manner.

Landscapes

  • Laminated Bodies (AREA)
  • Golf Clubs (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Vibration Prevention Devices (AREA)
  • Springs (AREA)
EP89890152A 1988-05-26 1989-05-19 Ski mit Dämpfungslagen Expired - Lifetime EP0344146B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1386/88A AT391088B (de) 1988-05-26 1988-05-26 Ski mit daempfungslagen
AT1386/88 1988-05-26

Publications (3)

Publication Number Publication Date
EP0344146A2 EP0344146A2 (de) 1989-11-29
EP0344146A3 EP0344146A3 (en) 1990-09-19
EP0344146B1 true EP0344146B1 (de) 1993-05-12

Family

ID=3512755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89890152A Expired - Lifetime EP0344146B1 (de) 1988-05-26 1989-05-19 Ski mit Dämpfungslagen

Country Status (6)

Country Link
US (1) US5092618A (ja)
EP (1) EP0344146B1 (ja)
JP (1) JPH0661377B2 (ja)
AT (2) AT391088B (ja)
CA (1) CA1316557C (ja)
DE (1) DE58904309D1 (ja)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT400524B (de) * 1988-10-10 1996-01-25 Atomic Austria Gmbh Schi
AT402156B (de) * 1990-05-02 1997-02-25 Fischer Gmbh Ski, insbesondere alpinski
US5314180A (en) * 1989-08-28 1994-05-24 Toray Industries, Inc. Sports instrument and impact-absorbing element to be attached to sports equipment
WO1991003284A1 (fr) * 1989-08-28 1991-03-21 Toray Industries, Inc. Articles de sport et materiau amortissant les chocs applique sur les articles de sport
DE8911516U1 (de) * 1989-09-27 1990-10-25 Blizzard Ges.m.b.H., Mittersill, Salzburg Ski
WO1991012860A1 (de) * 1990-02-21 1991-09-05 Kästle Aktiengesellschaft Ski mit integrierten bindungsbefestigungsplatten
FR2660385A1 (fr) * 1990-04-03 1991-10-04 Rossignol Sa Poutre equipee d'un dispositif d'amortissement progressif de vibrations.
FR2664823A1 (fr) * 1990-07-19 1992-01-24 Rossignol Sa Ski alpin.
AT402157B (de) * 1990-08-07 1997-02-25 Varpat Patentverwertung Plattenförmige dämpfungseinrichtung für eine schibindung
FR2672505B1 (fr) * 1991-02-08 1993-05-21 Salomon Sa Ski pour sport d'hiver comprenant une plateforme de montage des fixations.
FR2675392B1 (fr) * 1991-04-22 1995-06-23 Salomon Sa Dispositif d'amortissement pour ski.
EP0590052B1 (en) * 1991-06-17 1995-09-13 TRIMBLE & CO., INC. Ski binding block
AT396749B (de) * 1992-03-20 1993-11-25 Tyrolia Freizeitgeraete Fixierung einer platte auf der oberseite eines ski
FR2689411B1 (fr) * 1992-04-01 1994-06-03 Salomon Sa Ski comprenant une embase et un raidisseur en deux parties relie a l'embase.
FR2698012B1 (fr) * 1992-11-19 1994-12-16 Rossignol Sa Structure de ski.
FR2706319B1 (fr) * 1993-06-11 1995-07-21 Rossignol Sa Amortisseur de vibrations fixé sur la face supérieure d'un ski alpin.
DE4404475A1 (de) * 1994-02-14 1995-11-23 Georg Ignatius Gleitkörper, insbesondere Ski oder Gleitkufe
US5538272A (en) * 1994-03-21 1996-07-23 Peart; Stephen Tunable snowboard
US6352268B1 (en) 1994-09-19 2002-03-05 Stephen Peart Snowboard with transitioning convex/concave curvature
FR2748399B1 (fr) * 1996-05-09 1998-06-12 Rossignol Sa Dispositif amortisseur de vibrations pour planche de glisse sur neige
FR2763861B1 (fr) * 1997-05-30 1999-07-23 Rossignol Sa Plateforme en une seule partie pour le montage sur un ski alpin, d'une fixation pour chaussure
US6267402B1 (en) * 1999-03-30 2001-07-31 Nitinol Technologies, Inc. Nitinol ski structures
FR2809024B1 (fr) 2000-05-18 2002-07-12 Look Fixations Sa Dispositif de rehaussement d'au moins un element de fixation utilisee sur une planche de glisse
US6916035B2 (en) 2001-01-23 2005-07-12 Russell A. Houser Athletic devices and other devices with superelastic components

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995379A (en) * 1958-12-30 1961-08-08 Head Howard Ski
FR1580326A (ja) * 1968-05-21 1969-09-05
DE2558709C3 (de) * 1975-12-24 1982-02-11 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Elastomere Dämpfungseinrichtung
DE2729290C3 (de) * 1977-06-29 1981-09-17 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Dämpfungsbelag zur Dämpfung von Körperschall
FR2437225A1 (fr) * 1978-09-28 1980-04-25 Bekaert Sa Nv Ski perfectionne
US4293142A (en) * 1979-07-16 1981-10-06 K-2 Corporation Vibration damped ski
FR2537502B1 (fr) * 1982-12-13 1985-07-19 Ind Plastique Mecanique Materiau composite comprenant une ossature formee d'une nappe tissee, impregnee de matiere plastique et pourvue d'au moins une couche de revetement exterieur
US4627635A (en) * 1983-09-20 1986-12-09 Koleda Michael T Vibration damping units and vibration damped products
AT387724B (de) * 1986-05-27 1989-03-10 Rohrmoser Alois Skifabrik Ski
FR2616340B1 (fr) * 1987-06-12 1990-04-13 Salomon Sa Ski a neige

Also Published As

Publication number Publication date
AT391088B (de) 1990-08-10
CA1316557C (en) 1993-04-20
JPH0661377B2 (ja) 1994-08-17
DE58904309D1 (de) 1993-06-17
EP0344146A2 (de) 1989-11-29
ATA138688A (de) 1990-02-15
JPH02147077A (ja) 1990-06-06
EP0344146A3 (en) 1990-09-19
US5092618A (en) 1992-03-03
ATE89182T1 (de) 1993-05-15

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