WO2006085004A1 - Sliding or rolling board having a composite structure - Google Patents
Sliding or rolling board having a composite structure Download PDFInfo
- Publication number
- WO2006085004A1 WO2006085004A1 PCT/FR2006/000302 FR2006000302W WO2006085004A1 WO 2006085004 A1 WO2006085004 A1 WO 2006085004A1 FR 2006000302 W FR2006000302 W FR 2006000302W WO 2006085004 A1 WO2006085004 A1 WO 2006085004A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- portions
- ski
- board according
- waves
- Prior art date
Links
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
- A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
- A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
-
- 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 or rolling composite structure.
- skis provided with elements for retaining the boot.
- a ski comprises a central core located between two subassemblies of upper and lower reinforcement, the lower subassembly comprising the gliding sole and the edges.
- One of the functions of the core is to maintain the spacing between the upper and lower reinforcements in the manner of a spacer.
- Another function of the kernel is to influence the mechanical parameters of the board, and in particular on the ratio between flexion and torsion along the length of the ski.
- the gliding or rolling board comprises an elongate composite structure with a central core, an upper reinforcement subassembly and a lower reinforcement subassembly. It is characterized in that on at least most of its length the core is formed in at least two superposed core portions and separated by a separation surface forming a succession of waves with recesses and ridges which extends in the longitudinal direction of the core.
- Figure 1 shows an alpine ski.
- Figure 2 shows the ski of Figure 1 in cross section.
- Figure 3 is a sectional view of the ski of Figure 1 along a longitudinal section.
- Figures 4 to 6 relate to alternative embodiments.
- Figures 7 to 15 relate to other construction variants.
- Figures 16 and 17 show another mode of construction of the core.
- Figure 18 relates to another embodiment of the invention.
- FIG. 1 conventionally has the shape of an elongate beam with a spatula 2 curved upwards at the front and a heel 3 at the rear.
- the beam of the ski is arched, at rest it rests on a hypothetical surface by two lines of contact 5a and 5b front and back, and between these lines of contact the beam is arched upwards.
- the ski has a variable width with a maximum width towards the spatula 2 and the heel 3, and from these areas the width gradually decreases to the central zone 4 of the ski which is also intended to receive the retaining elements of the shoe.
- the structure of the ski comprises a central core 6 and two lower and upper reinforcement sub-assemblies 7 and 8.
- the lower subassembly 7 comprises in known manner a gliding sole 10 which is bordered by two edges 11 and 12, and surmounted by a reinforcement 13.
- the reinforcement is formed by a reinforcing layer or several superimposed layers, this or these reinforcements capable of being formed by a metal blade or a layer of fibers embedded in a resin matrix.
- the upper reinforcement subassembly 8 similarly comprises a reinforcement 14 formed by one or more metal or composite reinforcement layers, and an outer top layer 15 which is optionally decorated.
- the ski shown in section has a hull structure, i.e., the upper reinforcement subassembly descends along the side flanks of the ski to the edges.
- ski could have any other structure, sandwich type, type "cap”, box or other.
- the core 6 extends over almost the entire length of the ski, it defines the spacing between the upper and lower subsets.
- At least the core is in two portions which are superposed and fitted together.
- the separation surface between the two portions forms a succession of waves with peaks and valleys.
- the waves make it possible to modify the pressure distribution of the ski on the snow by locating overpressures at the level of the wave troughs.
- FIG. 3 shows a first embodiment of the invention.
- the ski thickness proportions have been deliberately exaggerated to facilitate the understanding of these figures.
- the core 6 extends over almost the entire length of the ski, except at the spatula and the heel where it is replaced by an insert.
- This method of construction is however not limiting, and one could have a core extending over the entire length of the ski, or have in these areas the two reinforcing subassemblies in contact with one another, or any other mode of construction.
- the core 6 is in two parts 18 and 19 which are superimposed with a separation surface.
- the separation surface 21 between the two portions here has an undulating shape with waves that have ridges 21a and depressions 21b.
- Each of the waves can be defined by its amplitude, that is to say the difference in height between a hollow and a peak, its length, that is to say the distance between two peaks or two successive hollows, the shape , that is to say including the inclination and curvature of its rising edges, the orientation of the ridges and hollows relative to the longitudinal direction defined by the beam.
- At least one of these parameters varies over the length of the ski so that the flexion / torsion ratio varies over the length of the ski.
- the separation surface 21 comprises three zones, two front and rear zones 23, 25 respectively and a median zone 24.
- the amplitude and the length of the waves are greater in the median zone than in the front zones. and back.
- the ski is relatively stiffer in flexion and less stiff in torsion in the median zone than in the other zones.
- the arrangement of the zones is not limiting and one could have a reverse arrangement as illustrated in FIG. 4 with, in the front and rear zones 27 and 29, waves of greater length than those of the waves of the median zone 28.
- Such a ski is relatively stiffer in torsion and less stiff in bending in its middle portion 32 than in the front and rear portions 31 and 33.
- FIG. 5 shows alternatively a median zone 32 and a front zone 33 with waves having a length less than that of the rear zone 31.
- the wave parameters can also vary.
- the amplitude of the waves is variable also in relation to the thickness of the nucleus. That is, in the end zones of the core where the thickness is small the amplitude of the waves is necessarily small. However, in relation to this parameter it is necessary to see things in a relative manner, that is to say to evaluate the amplitude of the waves as a function of the available thickness of the core. In previous modes of construction the waves extend over only a portion of the thickness of the core without coming into contact with the reinforcing subassemblies.
- FIG. 6 represents, in the median zone 38 of the ski, waves that extend over the entire thickness of the core, that is to say that in this zone the waves are in contact with the reinforcements and that they provide a mechanical connection between the upper and lower reinforcements.
- the waves extend over only a portion of the core thickness without coming into contact with the reinforcing subassemblies.
- the two portions 41 and 42 of the core 43 are separated by a separation surface 44 whose waves have a side view of a sawtooth shape, each of the teeth 45 having a rising face 45a and a downward face 45b considering the ski from back to front.
- the inclination of the rising and falling faces may be variable along the length of the ski.
- the figure represents a rear portion 49 with steep rising faces and steep descending faces, a median zone 50 with rising and falling faces of symmetrical inclination and a front portion 51 with rising and falling faces of reverse inclination with respect to the rear area.
- Figure 8 shows a ski seen from above.
- the mixed lines 53 symbolize the hollows or ridges of the waves of the separation surface.
- This figure illustrates that the orientation of the ridges or depressions with respect to the longitudinal direction defined by the board can vary.
- the ridges or hollows converge towards the same side of the board.
- the ridges or hollows of the other ski would converge on the other side of the board so as to have mirror symmetry.
- hollows or ridges could converge on one side of the ski on part of its length and the other side on another part of its length.
- the width of the waves 55 is constant over the width of the ski.
- the width of the waves is maximum in the median zone 58 of the ski and it gradually decreases towards the front 59 and rear 57 zones.
- Figures 12 and following illustrate the method of manufacturing the core and the separation layer of the two portions.
- FIG. 12 represents a core 65 of machined type, that is to say a core which is produced before the manufacture of the ski in the mold and which is put in the manufacturing mold with the other components.
- the two portions 66 and 61 of the core 65 are made separately and each has a contact face 68, 69 shaped waves.
- the two contact surfaces are adjusted, that is to say they marry each other during the superposition of the two portions.
- the two portions can be placed in the mold as such, that is to say by simple contact without additional assembly means. However, it is preferred to assemble them by a layer of glue.
- the two portions 71 and 72 are assembled with an intermediate layer 73.
- This layer is of any suitable type, for example a layer of resin-coated fibers, a layer of viscoelastic material, a metal blade. Or other.
- the two core portions may be made of wood or foam including polyurethane foam, or one of wood and the other foam.
- the wooden portions are preferably machined for example with a numerically controlled machining machine. Both portions can be made with wood of the same species or with different types of wood. Also the wood can be solid wood or an assembly of lamella glued together.
- the foam portions are either machined or molded and it is during the molding operation that the waveform of the contact surface is formed.
- FIG. 14 it starts from a wooden core portion 75.
- This portion has a length less than that of the finished core, and it has on its underside a corrugated shape.
- This wooden portion is placed in the upper part of a mold 77 having the shape of the finished core, and the components of a foam, for example a polyurethane foam, are injected into the mold. Due to the expansion of the foam, the foam portion 78 conforms to the wavy shape of the contact surface 76.
- the wood portion 75 is provided to engage the upper reinforcement subassembly.
- FIG. 15 shows a core made according to the same procedure but with a wooden portion 80 embedded in the foam portion 19 and placed in the lower part of the mold, to then come into contact with the lower reinforcement subassembly. .
- Figures 16 and 17 relate to another embodiment of the invention.
- the core here comprises three portions, two wooden portions 81a, 81b placed one above the other in the central portion and a foam portion 82.
- FIG 16 is placed in a mold the two wooden portions 81a, 81b one above the other.
- the components of the foam are injected.
- the foam infiltrates and extends in part between the two wooden portions it spreads so that they are placed on the top and bottom of the core in this area.
- the foam also makes the assembly of these two wooden portions.
- the dividing surfaces between the wooden portions and the foam are wave-shaped as previously described.
- Figure 18 relates to another embodiment of the invention applied to an injected type core "in situ", that is to say directly in the ski manufacturing mold.
- the separating layer 83 of the two portions 84 and 85 of the core 86 is a perforated element which is placed in the mold between the upper and lower reinforcement subassemblies 87 and 88. Before it is placed in the mold, the The perforated element is shaped into waves to form a separating layer having a shape as described above. Thus, at the injection of the core components, the foam swells by expansion on either side of this perforated element to fill the entire space between the two subassemblies.
- FIG. 19 shows a first example of perforated element 89.
- This is a grid formed by longitudinal and transverse filaments.
- the grid may be made of metal or fibers embedded in a resin matrix or any other material or combination of materials of different nature.
- the perforated element 90 is formed by longilinear blades spaced apart and assembled at regular intervals by connecting bars.
- FIG. 18 Three wave-shaped blades 91, 92 and 93 are shown in FIG. 18, they are assembled by means of connecting bars. It is also possible to give the blades a different shape and / or concavity at the same "wave". For example between the bars 94 and 95 could be given to the central blade 92 a concavity opposite that of the blades 91 and 93.
- the number of blades is not limiting.
- the separation layer 97 is not perforated but its width is less than the width of the core so that the foam can spread throughout the volume of the core on either side of the separation surface.
- this figure represents a corrugated blade 97 whose width is constant and less than the minimum width of the core.
- the waves of this element can be used for the anchoring of assembly screws, or on the contrary prevent the assembly screws are screwed into this element.
- the previous figure 16 shows an interface plate 98 which is mounted on the ski and assembled with four screws 99a, 99b, 99c, 99d.
- the two front screws 99a, 99b are anchored in the waves at two peaks, the rear screws 99c, 99d on the contrary are screwed between ridges.
- Also in place of screws could be any other means of assembly, including fir-shaped studs.
- the invention is not limited to the frame of the ski, it also applies to snowboard surfboards, rolling boards and generally any board gliding or rolling having a composite structure comprising a core central.
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0900106A AT504001B1 (en) | 2005-02-08 | 2006-02-08 | SLIDING BOARD OR ROLLBOARD WITH COMPOSITE STRUCTURE |
DE112006000319T DE112006000319T5 (en) | 2005-02-08 | 2006-02-08 | Sliding or skating board with composite structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0501250A FR2881660B1 (en) | 2005-02-08 | 2005-02-08 | SLIDING OR ROLLING BOARD WITH COMPOSITE STRUCTURE |
FR0501250 | 2005-02-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006085004A1 true WO2006085004A1 (en) | 2006-08-17 |
Family
ID=34955533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2006/000302 WO2006085004A1 (en) | 2005-02-08 | 2006-02-08 | Sliding or rolling board having a composite structure |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT504001B1 (en) |
DE (1) | DE112006000319T5 (en) |
FR (1) | FR2881660B1 (en) |
WO (1) | WO2006085004A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013112059A1 (en) | 2012-01-25 | 2013-08-01 | Rosiak Dariusz Miroslaw | Method of production of composite panels and snowboard, kiteboard, surfboard and skis as a type of the composite panel |
US9789383B2 (en) | 2014-12-02 | 2017-10-17 | Skis Rossignol | Sliding board whose structure includes a very flexible component |
US20220126192A1 (en) * | 2019-02-01 | 2022-04-28 | Pda Ecolab, Sas | Sliding board with corrugated mediums |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH575769A5 (en) * | 1974-02-12 | 1976-05-31 | Revaz Francis | Ski of composite sandwich construction - increases resistance to torsion and reduces vibrations along length due to uneven snow surface |
JPS52132936A (en) * | 1976-04-30 | 1977-11-08 | Nippon Gakki Seizo Kk | Ski body |
JPH04164467A (en) * | 1990-10-27 | 1992-06-10 | Arisawa Mfg Co Ltd | Core material for ski board |
JPH09103533A (en) * | 1995-08-09 | 1997-04-22 | Suncall Corp | Sliding board |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT371344B (en) * | 1981-08-20 | 1983-06-27 | Watschinger Gerhard Dr | SKI OR THE LIKE. |
-
2005
- 2005-02-08 FR FR0501250A patent/FR2881660B1/en not_active Expired - Fee Related
-
2006
- 2006-02-08 AT AT0900106A patent/AT504001B1/en not_active IP Right Cessation
- 2006-02-08 WO PCT/FR2006/000302 patent/WO2006085004A1/en not_active Application Discontinuation
- 2006-02-08 DE DE112006000319T patent/DE112006000319T5/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH575769A5 (en) * | 1974-02-12 | 1976-05-31 | Revaz Francis | Ski of composite sandwich construction - increases resistance to torsion and reduces vibrations along length due to uneven snow surface |
JPS52132936A (en) * | 1976-04-30 | 1977-11-08 | Nippon Gakki Seizo Kk | Ski body |
JPH04164467A (en) * | 1990-10-27 | 1992-06-10 | Arisawa Mfg Co Ltd | Core material for ski board |
JPH09103533A (en) * | 1995-08-09 | 1997-04-22 | Suncall Corp | Sliding board |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 002, no. 018 (M - 006) 7 February 1978 (1978-02-07) * |
PATENT ABSTRACTS OF JAPAN vol. 016, no. 461 (C - 0988) 25 September 1992 (1992-09-25) * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 08 29 August 1997 (1997-08-29) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013112059A1 (en) | 2012-01-25 | 2013-08-01 | Rosiak Dariusz Miroslaw | Method of production of composite panels and snowboard, kiteboard, surfboard and skis as a type of the composite panel |
US9789383B2 (en) | 2014-12-02 | 2017-10-17 | Skis Rossignol | Sliding board whose structure includes a very flexible component |
US20220126192A1 (en) * | 2019-02-01 | 2022-04-28 | Pda Ecolab, Sas | Sliding board with corrugated mediums |
Also Published As
Publication number | Publication date |
---|---|
AT504001B1 (en) | 2011-07-15 |
DE112006000319T5 (en) | 2007-12-27 |
FR2881660B1 (en) | 2007-07-27 |
AT504001A1 (en) | 2008-02-15 |
FR2881660A1 (en) | 2006-08-11 |
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