EP3730197A1 - Verstärkung für snowboard - Google Patents

Verstärkung für snowboard Download PDF

Info

Publication number: EP3730197A1
Authority: EP; European Patent Office
Prior art keywords: reinforcement; strands; carbon; fibers; basalt
Prior art date: 2019-04-02
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

EP20000108.9A

Other languages

English (en)

French (fr)

Other versions

EP3730197B1 (de

Inventor

Alain Grenetier

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.)

Salomon SAS

Original Assignee

Salomon SAS

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.)

2019-04-02

Filing date

2020-03-16

Publication date

2020-10-28

2020-03-16 Application filed by Salomon SAS filed Critical Salomon SAS

2020-10-28 Publication of EP3730197A1 publication Critical patent/EP3730197A1/de

2024-08-07 Application granted granted Critical

2024-08-07 Publication of EP3730197B1 publication Critical patent/EP3730197B1/de

Status Active legal-status Critical Current

2040-03-16 Anticipated expiration legal-status Critical

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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
- A63C5/122—Selection of particular materials for damping purposes, e.g. rubber or the like
- 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
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C5/00—Skis or snowboards
- A63C5/12—Making thereof; Selection of particular materials
- A63C5/126—Structure of the core

Definitions

the invention relates to a gliding board for the practice of winter sports.
the invention relates to a gliding board comprising a composite structure.
the invention is particularly suitable for the manufacture of skis but can also be used for the manufacture of snowboard snowboards or any other sliding device.
a typical composite structure for a gliding board has an upper sub-assembly, a lower sub-assembly, and an intermediate core. Functionally, the lower sub-assembly is among other things responsible for the functions of gliding and grip on snow, while the upper sub-assembly constitutes the top of the ski. It is also known to equip each of the upper and lower subassemblies with reinforcing elements. These upper and lower reinforcement elements are very important mechanical components of the gliding board, because the mechanical characteristics of the gliding board are mainly influenced by the mechanical characteristics of the reinforcements.
the core has, for its part, mainly an intermediate function, it maintains the distance between the lower reinforcement and the upper reinforcement.
the assembly formed by the upper and lower reinforcement elements constitutes a deformable beam.
the skiability the behavior of the board for gliding on snow is, of course, dependent on the weight of the latter but above all on its behavior in bending and, to a lesser extent, in torsion. This is why the designer of sliding boards will take particular care in the realization of the reinforcement elements.
Both the upper reinforcement and the upper reinforcement can comprise one or more distinct or identical layers.
the reinforcing layers generally consist of a fibrous structure embedded in a matrix of thermoplastic or thermosetting resin which represents approximately 40% of the total weight of the reinforcement. Often the fibers used are glass, carbon or other fibers. Each of these fibers has its own characteristics and their use for the manufacture of a gliding board leads to different behaviors in terms of skiability.
a reinforcement made of fiberglass has a thickness of between 0.3 and 1 mm.
the present invention aims to remedy the aforementioned drawbacks.
the present invention aims to provide a reinforcement which can be used for the manufacture of a gliding board which improves its damping properties.
a gliding board comprising at least one upper reinforcement, one lower reinforcement, an intermediate structure placed between said upper reinforcement and said lower reinforcement, characterized in that at least one upper reinforcement or lower reinforcement consists of an assembly of carbon fibers and basalt fibers, said basalt fibers representing a proportion of between 15% and 70% of the total weight of said lower or upper reinforcement, preferably between 45 % and 55%.
the reinforcement comprises a plurality of strands of carbon fiber and a plurality of strands of basalt fiber, said strands of carbon fibers and said strands of basalt fiber being arranged on the same layer so as to that the strands of basalt fibers are interposed between strands of carbon fibers.
the reinforcement comprises an assembly of a plurality of juxtaposed panels and in that part of the panels are made from plies of basalt strands arranged unidirectionally while another part of the panels are made. from a web of carbon strands also arranged unidirectionally.
the reinforcement comprises a fiberglass ply, a carbon ply and a ply comprising basalt fibers.
the figure 1 shows in cross section a ski according to the invention.
this comprises an upper sub-assembly, a lower sub-assembly and an intermediate structure placed between the two sub-assemblies.
Each of the sub-assemblies includes a reinforcement.
at least one of the reinforcements is designed according to the invention.
the upper sub-assembly comprises an upper reinforcement 5 and a top layer 6.
the lower sub-assembly comprises at least one lower reinforcement 7, a gliding sole 8 and metal edges 9.
the intermediate structure comprises a core 10 made of wood or synthetic material and side edges 11.
the figure 2 shows in cross section a reinforcement 4 according to a first embodiment of the invention.
each carbon fiber having a thickness of between 5 ⁇ m and 10 ⁇ m are first assembled with each other to form strands 12 of substantially cylindrical shape.
Each strand 12 is of the type between 3K and 48K, that is to say it comprises between 3000 and 48000 carbon fibers.
each carbon strand is of type 12 K, that is to say comprising approximately 12,000 fibers.
the basalt fibers are first assembled together to form strands 13.
Each strand has a count of between 68 Tex and 2400 Tex. They may be natural fibers or modified fibers of the Filava type (registered trademark). In the embodiments described here, strands of about 1200 Tex were used.
the strands and strands are draped over a single layer.
the carbon strands 12 and the basalt strands 13 are interposed with each other.
it is preferable that the carbon strands and the basalt strands have substantially the same diameter. So to vary the weight distribution of the basalt and carbon fibers, it suffices to modify the diagram according to which the strands are inserted between them: 1-1, 2-1, 3-1, etc ......
the entire layup of the carbon and basalt strands can be held in place using a light veil or a grid and a stitching thread which places the draping on the veil in places.
the reinforcement When the reinforcement is not pre-impregnated, it is at the time of molding, for the manufacture of the ski, that the reinforcement will be brushed with uncrosslinked resin. After curing, the lay-up of the carbon strands and the basalt strands embedded in the crosslinked resin constitutes the upper or lower reinforcement of the ski 1.
the basalt fibers can represent a percentage of between 15% and 70% of the weight of all the fibers of the reinforcement. However, better results were observed for a percentage between 45% and 55%.
the figure 3 represents a reinforcement 4 "according to a second embodiment of the invention.
the reinforcement 4" consists of an assembly of a plurality of juxtaposed and superimposed panels.
the panels 17 are made from layers of basalt strands arranged unidirectionally.
the panels 18 are made from a sheet of carbon strands also arranged unidirectionally.
the panels 17 and 18 are juxtaposed so as to constitute a first layer.
the panels 17, 18 have a thickness between 0.1 and 0.5 mm so that it is possible to superpose several layers thus formed to constitute a lower or upper reinforcement which has the usual thickness of a reinforcement by example made exclusively in fiberglass.
the figure 4 represents a reinforcement 4 '"according to a third embodiment of the invention. It is an upper or lower reinforcement. It is a reinforcement which combines three plies of different material: a fiberglass ply 21, a carbon ply 22 and a ply comprising basalt fibers 23.
the carbon ply 22 may for example be produced in the form of a ply of carbon strands arranged unidirectionally.
the basalt ply 23 is for its part a juxtaposition of basalt strands and carbon strands in a proportion between 15% and 70%.
test pieces were carried out. These five test pieces are made to have a bending constant identical to a fiberglass reinforcement of 1000g / m 2 . This corresponds to the basis weight of an upper or lower reinforcement usually used in a ski. Since fiberglass reinforcements are the most widely used in the manufacture of skis, the mechanical characteristics of these specimens are compared with those of the fiberglass specimen.
test pieces are compared in a damping experiment.
⁇ delta
the invention has mainly been described for the manufacture of a pair of skis for the practice of alpine skiing. It nevertheless applies to any gliding board, for example for a snowboard.

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Laminated Bodies (AREA)
Reinforced Plastic Materials (AREA)

EP20000108.9A 2019-04-02 2020-03-16 Verstärkung für snowboard Active EP3730197B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR1903500A FR3094647B1 (fr)	2019-04-02	2019-04-02	Renfort pour planche de glisse

Publications (2)

Publication Number	Publication Date
EP3730197A1 true EP3730197A1 (de)	2020-10-28
EP3730197B1 EP3730197B1 (de)	2024-08-07

Family

ID=67810760

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20000108.9A Active EP3730197B1 (de)	2019-04-02	2020-03-16	Verstärkung für snowboard

Country Status (2)

Country	Link
EP (1)	EP3730197B1 (de)
FR (1)	FR3094647B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102012100965A1 (de) *	2012-02-06	2013-08-08	Jörg Kaufmann	Gleitsportgerät, insbesondere Snowboard, Ski und dergleichen und Verfahren zu dessen Herstellung
EP2762208A1 (de) *	2013-02-05	2014-08-06	Skis Rossignol	Herstellungsverfahren eines Snowboards, und mit diesem Verfahren erhaltenes Snowboard
FR3017306A1 (fr)	2014-02-13	2015-08-14	Salomon Sas	Planche de glisse
US20160096103A1 (en) *	2014-10-07	2016-04-07	Mervin Manufacturing, Inc.	Dual-edged snowboard and snow skis
CH713005A2 (fr) *	2016-10-04	2018-04-13	Abdi Selim	Noyau d'engin sportif de glisse ou à roulettes en matériau composite fibreux courbé.

2019
- 2019-04-02 FR FR1903500A patent/FR3094647B1/fr active Active
2020
- 2020-03-16 EP EP20000108.9A patent/EP3730197B1/de active Active

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102012100965A1 (de) *	2012-02-06	2013-08-08	Jörg Kaufmann	Gleitsportgerät, insbesondere Snowboard, Ski und dergleichen und Verfahren zu dessen Herstellung
EP2762208A1 (de) *	2013-02-05	2014-08-06	Skis Rossignol	Herstellungsverfahren eines Snowboards, und mit diesem Verfahren erhaltenes Snowboard
FR3017306A1 (fr)	2014-02-13	2015-08-14	Salomon Sas	Planche de glisse
US20160096103A1 (en) *	2014-10-07	2016-04-07	Mervin Manufacturing, Inc.	Dual-edged snowboard and snow skis
CH713005A2 (fr) *	2016-10-04	2018-04-13	Abdi Selim	Noyau d'engin sportif de glisse ou à roulettes en matériau composite fibreux courbé.

Also Published As

Publication number	Publication date
FR3094647B1 (fr)	2021-12-17
FR3094647A1 (fr)	2020-10-09
EP3730197B1 (de)	2024-08-07

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