EP1279420A1 - Verfahren zur Herstellung eines Alpinskis sowie derso hergestellte Ski - Google Patents

Verfahren zur Herstellung eines Alpinskis sowie derso hergestellte Ski Download PDF

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Publication number
EP1279420A1
EP1279420A1 EP02356144A EP02356144A EP1279420A1 EP 1279420 A1 EP1279420 A1 EP 1279420A1 EP 02356144 A EP02356144 A EP 02356144A EP 02356144 A EP02356144 A EP 02356144A EP 1279420 A1 EP1279420 A1 EP 1279420A1
Authority
EP
European Patent Office
Prior art keywords
ski
zone
raising
grooves
additional elements
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.)
Granted
Application number
EP02356144A
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English (en)
French (fr)
Other versions
EP1279420B1 (de
Inventor
Eric Restani
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 EP1279420A1 publication Critical patent/EP1279420A1/de
Application granted granted Critical
Publication of EP1279420B1 publication Critical patent/EP1279420B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • A63C5/12Making thereof; Selection of particular materials
    • A63C5/128A part for the binding being integrated within the board structure, e.g. plate, rail, insert
    • 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/058Undercut

Definitions

  • the invention relates to the field of sliding sports, more specifically alpine skiing. It relates more particularly to a ski which includes a zone for raising the binding formed by an extra thickness of the very structure of the ski.
  • the invention makes it possible to optimize the mechanical properties of a ski having such a structure.
  • the invention also relates to a method for manufacturing such skis.
  • the upper face of the ski is equipped in the skate area with a safety binding consisting of a stop and a heel piece.
  • a safety binding consisting of a stop and a heel piece.
  • This raising can be obtained in different ways, and for example through the use of a screwed raising platform, or more generally secured, to the upper face of the board.
  • Many types of platforms have already been proposed such as in particular that described in document US 5,879,019
  • this enhancement zone formed by the structure is important, and in particular induces a significant stiffening of the skate area.
  • An objective of the invention is to modulate this influence, in order to obtain a ski whose dynamic behavior can be optimized.
  • the invention therefore relates to a method of manufacturing an alpine ski which comprises at least one area for raising the binding formed by an excess thickness of the structure of the ski forming a projection at the level of the skate area.
  • the ski may include a unique raising zone which receives the two elements of the binding. This raising zone can also be divided into two parts, a first part receiving the stop, the other part the heel piece. For certain cases, only the stopper, or even the heel piece can be mounted on a raising zone.
  • the various constituent elements of the ski are placed in a mold, between a bottom and a mold cover.
  • the additional elements can be eliminated either entirely or partially after molding.
  • these additional elements are made of a relatively flexible and deformable material, they can be pulled out. In the case of more rigid elements, they can be removed by machining. The grooves are then formed inside these additional elements.
  • the ski obtained according to such a method therefore has a groove dug over at least a portion of the length of each of its lateral faces. This groove is located between the upper face of the raising zone and the edge of the ski.
  • the ski has hollowed portions which may extend over all or part of the length of the enhancement zone.
  • These grooves can be made in the enhancement zone itself, that is to say above the level that the ski would have if it did not include the enhancement zone. These grooves can also be located below this level, above the edges. The presence of these grooves, forming recesses, and in particular their length and their depth, influences the overall stiffness of the structure, in particular at the level of the pad area. The behavior can thus for example be closer to that of a traditional ski equipped with a platform attached to its upper face, while retaining the advantages a raising zone integrated into the structure of the ski, and in particular the reduction.
  • the additional elements used during the manufacturing process can be parallel to the sole of the ski, so as to give grooves substantially parallel to the upper face of the enhancement zone.
  • the grooves hollowed out on each of the lateral faces can meet to define, over at least part of their length, at least one through opening transversely below the upper face of the raising zone.
  • the groove made on one side of the board is hollowed out deep enough to open into the groove made on the other side, and thus form a material-free zone over the entire width of the ski.
  • the through opening is situated longitudinally, substantially at the central level of the raising zone.
  • the hollowed-out zone produced in or under the raising zone is between the zones receiving the stop and the heel of the binding.
  • the bottoms of the facing grooves define between them a substantially vertical partition located below the upper face of the raising zone.
  • the structure of the board includes a region of width less than the width of the ski, and on which a part of the raising zone rests. This region therefore forms a partition on which the upper part of the raising zone rests, and through which the supports are transmitted. This partition contributes to the overall rigidity of the raising zone, the configuration of which is moreover lightened by the presence of the characteristic grooves.
  • the ski has a through opening and two partitions as described above, these partitions being located one in front and the other behind the through opening.
  • the partitions can thus advantageously be longitudinally perpendicular to one of the elements of the binding, so as to allow good transmission of forces in the direction of the ski sole.
  • the shape of the different partitions formed between the grooves can be diverse.
  • these partitions can have a thickness, measured transversely with respect to the ski, which is either substantially constant or variable. More specifically, the cross section of the partition can be either constant, or even evolve in the direction of the length of the ski. In the latter case, this thickness may decrease to reach a minimum at the limits of the through hollow zone.
  • the width of the partitions can also vary with the height of the partition.
  • this partition may have sides which are not strictly vertical, but on the contrary inclined.
  • the partition (s) may extend in its lower part as close as possible to the lateral faces of the ski, so as to contribute to the transmission of the support towards the edges.
  • the partitions in their upper part, have a relatively reduced width. This partition widens while moving downwards, so as to have a substantially trapezoidal cross section. This configuration makes it possible to lighten the raising zone, without altering the vertical transmission of the supports.
  • the partition may include at least one element made of a material lighter than the rest of the ski, so as to reduce the influence of the enhancement zone on the weight and the overall stiffness of the ski.
  • the upper part of the raising zone may include at least one rigid insert, capable of receiving the mounting screws of the binding.
  • This insert located below the upper face of the raising zone, is made of a material which can accommodate the mounting screws of the binding with minimum risk of messing up.
  • the grooves made on the lateral faces of the ski can allow the installation of particular fastening elements. These elements are advantageously arranged to cooperate with the characteristic grooves made in the ski. These grooves can therefore be used for holding in position and for longitudinal adjustment of the position of the toe piece and / or of the heel piece. Thus, when these grooves are parallel to the upper face of the raising zone, they can accommodate ribs oriented towards the median longitudinal plane of the ski, produced under a slide supporting the abutment or the heel piece.
  • At least one safety fastening element is mounted by means of a clamp system including lateral jaws cooperating with the lateral grooves complementary to the ski. These jaws are advantageously held transversely in position on the ski by locking means.
  • the invention relates both to an alpine ski having a zone for raising the binding which is an integral part of the structure of the ski, and to a manufacturing method making it possible to obtain such a ski.
  • Such a ski (1) is illustrated in FIG. 1, and has, in known manner, a skid zone (2), a tip zone (3) and a heel zone (4).
  • the ski (1) comprises, at the level of the skid zone (2), a zone for raising the binding (5) which is formed by a projection of the very structure of the ski.
  • the upper face (6) of this raising zone (5) determines an excess thickness of the ski relative to the edges (9) which is more accentuated at the skate than in the heel zone (4) and in the tip zone (3).
  • the upper face (6) of the raising zone (5) is intended to receive the stop and the heel piece of the binding.
  • this raising zone (5) may include extensions (10) forming arms extending in front and behind the raising zone (5) proper.
  • the ski (1) comprises on each of its lateral faces (11) at least one groove (12) hollowed out in the direction of the median longitudinal plane (13) of the ski.
  • This groove (12) can, like the shape illustrated in FIGS. 1 and 2, extend over almost the entire length of the raising zone (5). It can also extend over only part of this enhancement zone, or even extend over the entire length, and lead to the front and at the edge of the enhancement zone (5).
  • the grooves (12) can be parallel to the upper face (6) of the raising zone (5). They are then parallel to the sole of the ski. These grooves (12) can be located at different height levels between the edges (9) and the upper face (6) of the raising zone (5). In the illustrated form, the groove (12) is located at a height slightly greater than the thickness of the ski measured in the heel and tip areas. However, these grooves could be located at a slightly lower level, closer to the edges (9).
  • each groove (12) can comprise different zones (15-20) having a different depth.
  • the latter has a depth less than half the width of the ski, so that the bottoms (25, 26 ) grooves define a partition (21, 22) connecting the upper part (27) of the raising zone (5) to the lower part (28) of the ski structure.
  • the grooves (12) define two partitions (21, 22) located substantially perpendicular to the zones intended to receive the stop and the heel piece of the binding. Between the two partitions (21, 22), the portions (17, 18) of the groove (12) meet to form a through opening (23). This through opening is located substantially at the median level of the raising zone (5).
  • the length of the through zone (23) is also determined to optimize the dynamic behavior of the ski, while reducing its structure.
  • the influence of the stiffness of the raising zone can also be adjusted by the choice of a particular profile or section with regard to the partitions (21, 22).
  • the partition (30) has a generally trapezoidal section.
  • the partition (30) therefore has a lower width in its upper part. This small width modifies the bending stiffness of the upper part (31) of the raising zone (5), to allow a slight movement of this upper zone (31) around the longitudinal axis of the ski.
  • the partition (30) is connected to the section of the lower part (32) of the ski structure. In this way, the supports exerted on the upper face (33) of the raising zone (5) are effectively transmitted in the direction of the edges (9), to favor the setting of edges.
  • the partition (30) can integrate different types of inserts which give it specific mechanical properties.
  • the upper zone (31) of the raising zone (5) being intended to receive the stop and the heel piece, it will be advantageously possible, as illustrated by the Figure 5, integrate a reinforcement (37) to stiffen it.
  • This reinforcement (37), disposed below the upper protective face (38) can be drilled and receive the mounting screws of the elements forming the attachment.
  • the ski may include two areas for raising the binding, one accommodating the stop, the other accommodating the heel piece.
  • only one of the elements of the binding for example the stop, can be mounted on a zone for raising the binding, the other element, and typically the heel piece, being mounted on a platform.
  • the invention also relates to a method for manufacturing a ski according to the invention.
  • the various elements used to make the lower part of the structure of the ski are placed in a mold base (40). These include the edges (9), the sole (41) and the lateral reinforcement elements (42) intended to form the edges of the ski. Thereafter, two additional elements (43) are put in place above the lateral reinforcement elements (42). These additional elements rest on a shoulder (44) produced in the bottom (40) of the mold. These elements (43) protrude inside the structure of the ski by a portion (45) which can extend more or less deeply depending on the depth which it is desired to give to the characteristic grooves.
  • the rest of the structure intended to form the ski has not been shown, since it may be either preformed elements intended to form the core, or different reinforcements without influence on the other characteristics of the invention.
  • the ski can also be produced by injecting components which react in situ to form a polyurethane core.
  • the mold cover (47) is put in place after having deposited a sheet (48) intended to form the upper protective layer.
  • This sheet (48) can be associated with a reinforcing element (49), typically made of glass fibers impregnated with epoxy resin, and which will serve to anchor the mounting screws of the elements of the fixing.
  • the assembly thus produced is removed from the mold. This gives the structure illustrated in FIG. 9.
  • the additional elements (43), as well as part of the upper sheet (48) project laterally from the final shape of the ski.
  • the layer (48) is then cut at the limits of the upper portion of the enhancement zone.
  • the elements (43) are then extracted. They thus define, as illustrated in FIG. 10, the two characteristic grooves (12).
  • the metal foil (50) and the protective layer (54) are then leveled off at the level of the lateral reinforcing elements (42).
  • the metal layer (50) can advantageously be tapped to receive the mounting screws for the fasteners.
  • an additional part (55) is used which is placed in the bottom of the mold (40) above the lateral reinforcing elements (42).
  • This additional element (55) may have in its center a depression zone (56) to balance the upper and lower parts of the structure, and facilitate the positioning of the different elements during the mold-forming.
  • In the bottom of this depression (56) are pierced with openings (57) intended to allow the passage of the polyurethane foam, when the latter expands after injection of the liquid mixture of the reactive chemical components. By expanding, this foam presses the upper protective layer (58) and the associated reinforcement (59) under the mold cover.
  • the upper protective layer (58) and the characteristic part (55) are leveled in their portions projecting laterally from the final structure of the ski.
  • the plastic part (55) can then be machined to produce the characteristic grooves, with the desired depth.
  • the ski thus obtained therefore has a raising zone equipped with lateral grooves, over all or part of its length.
  • This raising zone can accommodate the various elements of the fixing which are then screwed through its upper face.
  • this raising zone can also accommodate an element of the fixing (60) by means of a base (61) cooperating with the characteristic grooves (12).
  • This base (61) then has a shape complementary to the upper part (63) of the raising zone.
  • This base has in particular two portions (64) forming ribs which are fitted inside the grooves (12) produced on the lateral faces of the ski. It is thus possible to slide the base (61) and therefore the elements of the binding relative to the ski.
  • this base (61) is permitted when the characteristic grooves (12) open out at the front and / or at the rear of the binding enhancement zone, although the latter has a narrowing in width allowing the introduction of the ribs (64) inside the characteristic grooves (12). Locking in the longitudinal position of the fixing element (60) is carried out for example by screwing the base (61) onto the raising zone.
  • the base (65) is equipped on one side with a rib (66) substantially similar to that illustrated in FIG. 13.
  • the base (65) is equipped with a pivoting mechanism (68) around an axis (67) secured to the base.
  • the pivoting part (68) has a rib (69) which fits into the characteristic groove (12).
  • Elastic means are provided at the pivot axis (67) so that the ribs (69 and 66) are pressed inside the grooves.
  • These locking means can be replaced by a derivative device in which the part (68) penetrates inside the grooves by lateral translation, for example under the effect of an adjustment screw not shown. Other means can be envisaged to ensure rapid locking of these jaws on the raising zone.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP02356144A 2001-07-25 2002-07-16 Verfahren zur Herstellung eines Alpinskis sowie derso hergestellte Ski Expired - Fee Related EP1279420B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0109951 2001-07-25
FR0109951A FR2827785B1 (fr) 2001-07-25 2001-07-25 Ski alpin

Publications (2)

Publication Number Publication Date
EP1279420A1 true EP1279420A1 (de) 2003-01-29
EP1279420B1 EP1279420B1 (de) 2006-04-19

Family

ID=8865896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02356144A Expired - Fee Related EP1279420B1 (de) 2001-07-25 2002-07-16 Verfahren zur Herstellung eines Alpinskis sowie derso hergestellte Ski

Country Status (5)

Country Link
US (1) US6793862B2 (de)
EP (1) EP1279420B1 (de)
AT (1) ATE323537T1 (de)
DE (1) DE60210711T2 (de)
FR (1) FR2827785B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113905789A (zh) * 2019-06-18 2022-01-07 埃朗有限责任公司 折叠滑雪板

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8641955B2 (en) * 2008-08-08 2014-02-04 Gauthier Biomedical Inc. Method for forming a molded component for an item
US8984729B2 (en) * 2012-09-06 2015-03-24 Ramp Sports, Llc Skis and methods of making same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196925A (en) * 1939-04-24 1940-04-09 Peter J Kairis Ski
US5346244A (en) * 1992-01-28 1994-09-13 Salomon Sa Ski comprising a projecting central platform
DE29511954U1 (de) * 1995-07-25 1995-09-28 Wertz, Dietrich, Dipl.-Ing., 57555 Mudersbach Grund-/Trägerplatte für Skibindungen

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US3940157A (en) * 1973-02-07 1976-02-24 Nippon Gakki Seizo Kabushiki Kaisha Ski structure
SE8405153L (sv) * 1983-10-27 1985-04-28 Fischer Gmbh Skida samt forfarande for dess framstellning
FR2602979B1 (fr) * 1986-08-20 1990-09-21 Salomon Sa Dispositif amortisseur de chocs et vibrations entre un ski et la fixation de la chaussure
US4919447A (en) * 1988-03-18 1990-04-24 Allsop, Inc. Cross country ski
AU606482B2 (en) * 1988-11-22 1991-02-07 Sankyo Engineering Co., Ltd. Slide core mold for injection molding
US5141243A (en) * 1990-01-22 1992-08-25 Pacific Coast Composites, Inc. Alpine ski with a simplified construction
FR2666021B1 (fr) * 1990-08-24 1992-11-13 Salomon Sa Ski de fond, notamment pour la pratique du pas alternatif.
US5580078A (en) * 1993-11-12 1996-12-03 Vance; Mark D. Double-edged snowboard
FR2718650B1 (fr) 1994-04-18 1996-06-21 Rossignol Sa Ski alpin.
FR2734490B1 (fr) * 1995-05-22 1997-07-04 Rossignol Sa Planche de glisse sur neige comportant une plateforme de reception et de surelevation des fixations de la chaussure
FR2741544B1 (fr) 1995-11-29 1997-12-19 Rossignol Sa Ski equipe d'un dispositif destine a adapter la position transversale d'une fixation en fonction des impulsions du skieur
FR2746662B1 (fr) * 1996-03-27 1998-05-29 Salomon Sa Planche de ski entouree d'une carre continue
US6499758B1 (en) * 1998-03-20 2002-12-31 William H. Bollman Egonomic sportsboard
US6547210B1 (en) * 2000-02-17 2003-04-15 Wright Medical Technology, Inc. Sacrificial insert for injection molding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196925A (en) * 1939-04-24 1940-04-09 Peter J Kairis Ski
US5346244A (en) * 1992-01-28 1994-09-13 Salomon Sa Ski comprising a projecting central platform
DE29511954U1 (de) * 1995-07-25 1995-09-28 Wertz, Dietrich, Dipl.-Ing., 57555 Mudersbach Grund-/Trägerplatte für Skibindungen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113905789A (zh) * 2019-06-18 2022-01-07 埃朗有限责任公司 折叠滑雪板
CN113905789B (zh) * 2019-06-18 2024-03-26 埃朗有限责任公司 折叠滑雪板

Also Published As

Publication number Publication date
ATE323537T1 (de) 2006-05-15
EP1279420B1 (de) 2006-04-19
FR2827785A1 (fr) 2003-01-31
DE60210711D1 (de) 2006-05-24
DE60210711T2 (de) 2006-09-14
US20030020258A1 (en) 2003-01-30
FR2827785B1 (fr) 2003-11-07
US6793862B2 (en) 2004-09-21

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