EP2921210A1 - Snowboard und herstellungsmethode eines solchen snowboards - Google Patents
Snowboard und herstellungsmethode eines solchen snowboards Download PDFInfo
- Publication number
- EP2921210A1 EP2921210A1 EP15000805.0A EP15000805A EP2921210A1 EP 2921210 A1 EP2921210 A1 EP 2921210A1 EP 15000805 A EP15000805 A EP 15000805A EP 2921210 A1 EP2921210 A1 EP 2921210A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- insert
- reinforcement
- ski
- gliding board
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 3
- 230000002787 reinforcement Effects 0.000 claims abstract description 66
- 239000010410 layer Substances 0.000 claims description 51
- 239000011247 coating layer Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 239000011324 bead Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004761 kevlar Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 241001166076 Diapheromera femorata Species 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- A63C5/04—Structure of the surface thereof
- A63C5/052—Structure of the surface thereof of the tips or rear ends
Definitions
- the present invention relates to a gliding board whose end is shaped like a spatula, such as a ski or a surf, and a method of manufacturing such a gliding board.
- a spatula refers to the front end of a gliding board, which is slightly raised to prevent the ski from crashing in the snow, or being deflected by the terrain.
- a ski comprising a spatula at the front, a heel at the rear and a central part, also called body, the spatula and the heel being thinner than the body of the board.
- This allows to lighten the entire ski without weakening it.
- the weight of the user based essentially on the central part of the ski is the part of the ski that undergoes the most mechanical efforts.
- the spatula's main role is to chase the snow and facilitate turns. It therefore supports less effort than the body of the ski.
- the spatulas having the same structure as the body of the ski they remain relatively heavy, which is troublesome especially in the case of a ski touring, because the user is required to frequently lift the skis to climb a slope.
- vibrations in the spatula can destabilize the entire ski.
- Another common problem is that the front and rear ends are more exposed than other parts of the ski.
- the rear end is constantly resting on the ground when the user walks, ski in hand, and it uses it in the manner of a walking stick.
- the front spatula is brought to come into contact with obstacles that may damage it during gliding phases or outside of them (storage, transport, handling, etc.). It is these drawbacks that the invention intends to remedy more particularly by proposing a new gliding board whose spatula is lighter and more flexible than the spatulas of known gliding boards.
- the invention particularly aims to achieve a gliding board whose front and / or rear ends are less fragile and better withstand all kinds of solicitations during the actual sliding phases, but also outside thereof.
- the invention relates to a gliding board, having a rear end, a front end shaped spatula and which comprises a multilayer structure including: a core, an upper reinforcement, a lower reinforcement; a coating layer disposed above the upper reinforcement, a sliding sole disposed below the lower reinforcement, and further comprising an end insert at least partially between the upper and lower reinforcements, which extends the core to one from its ends, so that one of the following two elements: coating layer and gliding sole does not completely cover said end insert.
- the spatula whose insert is the core can be lighter than an ordinary spatula, which reduces the total weight of the gliding board and make it more manageable.
- the insert provides flexibility to the spatula so that it better dampens vibration, especially in bends, such a spatula thus increasing the stability of the gliding board.
- the ski touring 2 represented on the Figures 1 to 4 is intended to be placed on the surface of the ground S which, by hypothesis, is assumed flat and horizontal. For the sake of clarity, the surface S is represented only on the figure 2 .
- the longitudinal axis X2 of the ski 2 is parallel to the surface S.
- the part of the ski 2 to the left of the axis X2 from the point of view of the skier is the left side.
- Y2 denotes an axis perpendicular to the axis X2 and also parallel to the surface S. Finally, we denote Z2 a perpendicular axis and sequent with the axes X2 and Y2.
- L2 is the length of the ski 2, measured between its front end 21 and its rear end 22 along the axis X2.
- the ski 2 has a slightly parabolic shape and its front portion 4, called spatula, is raised relative to the surface S. In use, the ski 2 abuts against the surface S at the rear of the spatula 4.
- a line segment 41 from which the lower surface of the ski ceases to be in contact with the surface S, defines the rear end of the spatula 4. Since the ski is symmetrical about the axis X2, the line segment 41 is parallel to the axis Y2.
- the front end of the spatula is the front end 21 of the ski.
- the spatula therefore has a length L4 measured between the segment 41 and the end 21 between 100 and 600 mm, while the length L2 is between 1200 and 2000 mm.
- the ski 2 has a multilayer structure and comprises a core 23, covered by upper layers 26 and resting on lower layers 27.
- the upper layers 26 and lower 27 completely cover the core 23.
- the upper layers 26 covering the core 23 are composed, from top to bottom, of a coating layer 262, an upper reinforcement 263, a first aluminum layer 264, and an upper intermediate layer 266. It should be noted that the aluminum layer 264 and the upper intermediate layer functionally constitute additional reinforcements.
- the lower layers, on which the core 23 rests, are composed, from bottom to top, of a sole 272, a lower intermediate layer 276, a second aluminum layer 274, as well as a lower reinforcement 273, and incorporate edges 271 deposited around the sole 272.
- the spatula 4 comprises, on its front end portion, an insert 42 implanted between the upper reinforcements 263 and lower 273 and which extends the core 23 of the ski 2 forward.
- the upper reinforcements 263 and lower 273 extend forward of the ski beyond the core 23 and the layers 262, 264, 266, 272, 274, 276, to an edge 421 of the insert 42 opposite the core 23.
- the reinforcements 263 and 273 completely cover the insert 42.
- the insert is not covered by the other upper layers 262, 264 and 266 and lower 272, 274 and 276.
- the insert is maintained in places only between the upper reinforcements 263 and lower 273.
- the front limit of the coating layer 262 is noted 24.
- This limit 24 has, in plan view, an ellipse section centered on the axis X2, as visible in FIG. figure 1 .
- the coating layer 262 which covers the layers 264 and 266, is the only one visible on the figure 1 .
- the front end of the spatula, which is also the front end 21 of the ski 2 has a rounded shape.
- L424 the length of the insert 42 measured between, on the one hand, the intersection of the front limit 24 with a lateral edge of the ski and, on the other hand, the front end of the ski 21 at the level of the X2 axis.
- L423 the length of the insert 42 measured along its axis of symmetry X2. The length L424 is between 20 and 200 mm, while the length L423 is between 10 and 100 mm.
- the implantation of the insert 42 in the axial extension of the core 23 towards the front is visible on the figures 2 and 3 .
- the front edge 231 of the core 23 comes into contact with the rear edge 422 of the insert 42, these edges 231 and 422 being complementary. More specifically, the edge 231 is convex and edge 422 is concave and receives surface support 231 edge.
- the insert 42 is a core for the front portion of the spatula 4 and extends the core 23 forward, beyond its edge 231, being reinforced and mechanically protected by the reinforcements 263 and 273.
- edges 231 and 422 are substantially aligned along the axis Z2 with the boundary 24.
- H1 is the height of the point P1 relative to the surface S on which the ski 2 rests, this height being measured parallel to the axis Z2.
- H4 the maximum height of the spatula measured at the upper end of the upper reinforcement 263 relative to the surface of the ground S.
- the height H2 is measured at a point P'1 located halfway up the edges 231 and 422, parallel to the axis Z2 and with respect to the surface S.
- the height H1 is between 10 and 50 mm, while the height H4 is between 40 and 70 mm and the height H2 is between 0 and 30 mm.
- the lower reinforcement 273 comes into direct contact with the core 23 and the insert 42 without any layer being interposed between them.
- layers of aluminum 264 and intermediate 266 are interposed between the core 23 and the upper reinforcement 263.
- the thickness of the core 23 and e42 the thickness of the insert 42.
- the core 23 and the insert 42 are of constant thickness.
- the thickness e23 is equal to the thickness e42, preferably with a value of between 1 and 4 mm.
- the insert comprises at its front end an extra thickness forming a bead 48.
- This bead 48 has a width 48 of the order of a few millimeters and a thickness E48 of the order of 1 mm. It follows the edge of the spatula 4. This bead is created in the mold by creep of the material of the insert.
- the covering layer 262 forms an edge 241 at its boundary 24 with the upper reinforcement 263 from which a thickness decreases towards the front.
- the coating layer 262 has a refined shape to optimize the aerodynamics of the ski 2.
- the core 23 is made of a dense material allowing it to withstand the weight of the skier.
- the insert 42 for its part, is made of synthetic material, in particular polyurethane. In practice, the material constituting the insert 42 is more flexible and stronger than that of the core 23. As a result, it is not necessary to protect the insert with the additional coating layer and reinforcement layers. Thus, the spatula 4 is lighter and more flexible than when the same multilayer structure of the ski extends over its entire length and in particular to the edge 21. The relative flexibility and strength of the insert makes it play the role of a bumper for the front end of the ski.
- the upper reinforcements 263 and lower 273, but also the intermediate layers, may comprise fibers, in particular glass, carbon, vegetable, kevlar. Reinforcements may also be metal.
- the figure 4 illustrates how the different constituent layers of the ski 2 are arranged relative to each other.
- This multilayer structure is obtained by molding.
- the sole 272 and the edges are arranged at the bottom of a mold, then the intermediate layers 276 and aluminum 274 are placed on top.
- the reinforcement 273 is placed in the mold above the layers 272, 274 and 276.
- the core 23 and the insert 42 are placed on the reinforcement 273, aligning them in the direction of the axis X2.
- the edges 231 and 422 are brought into contact.
- the intermediate layers 266 and aluminum 264 then cover the core 23 and the insert 42, before being themselves covered by the upper reinforcement 263.
- the coating layer 262 is then affixed to the assembly formed during the previous steps.
- the insert 42 is provided at its rear end and on its outer edges, two overhangs or surplus material 426, projecting on the outside of the board. These overhangs 426 make it possible, inter alia, to maintain the insert 42 in position, with respect to the core 23, during molding.
- a resin such as an epoxy resin, impregnating at least some of the pieces in place in the mold.
- This resin by solidifying, solidarises the pieces and ensures the rigidity of the ski.
- insert 42 is longer and is implanted deeper into the structure of the ski.
- the aluminum coating layers 262, 264, 274, intermediate 266, 276 and the sole 272 do not extend beyond the core 23.
- the insert 42 is then held only between upper reinforcements 263 and lower 273.
- the core 23 is shorter, and the insert 42 longer, so that the insert 42 is partially covered by the upper layers 262, 264 and 266 and lower 272, 274 and 276.
- the insert 42 is completely covered by the reinforcements 263 and 273.
- the spatula obtained is more solid, the risk of breakage of the spatula are reduced because the insert 42, maintained between the all layers 262, 263, 264, 266, 272, 273, 274 and 276 constituting the structure of the ski 2, is less likely to detach.
- the insert 42 is implanted between the upper layers 262, 263, 264 and 266 and lower 272, 273, 274 and 276 as in the second embodiment.
- the edges 422 and 231 of the core 23 and the insert 42 are staggered so as to constitute each a rabbet. So, the core 23 and the insert 42 partially overlap, and the core 23 partially covers the insert 42. It is therefore better implanted in the structure of the ski, and has less chance to dissociate from the rest of the ski 2, which limits the risk of breakage of the spatula 4.
- the core 23 has a longitudinal slot 28 along the axis X2 and which opens on the front.
- the insert 42 is implanted in this notch and on the front of the core.
- the layers of sole 272, fibers 276 and 266, aluminum 274 and 264 and coating 262 also have a notch opening on the front and substantially of the same dimensions as the notch 28 cut in the core 23.
- the upper reinforcements 263 and lower 273 completely cover the insert 42.
- the latter, as well as the reinforcements 263 and 273, are each pierced with a slot 44 oriented along the longitudinal axis X2 to the ski. This slot ends at its front end by a circular orifice 46 opening.
- L28 the length of the notch 28 measured between its rear end 282 and its front end 281 along the longitudinal axis of the ski X2.
- the notch is symmetrical along the axis X2.
- the width 28 of the notch 28 measured along the axis Y2.
- the width l 28 is increasing along the axis X 2 going from the rear end 282 to the front end 281, such that part of the notch at the front is wider than part of the notch located further back.
- the length L28 is between 50 and 250 mm, while the width l 28 is between 5 and 30 mm.
- the distance between the rear end of the slot 242 and the front end 21 of the ski measured along the axis X2 is noted d44.
- D46 is the diameter of the circular orifice D46 and d46 the distance between its center C46 and the front end 21 of the ski 2, measured along the axis X2.
- the distance d44 between 100 and 250 mm and width 44 of the slot 44 is between 3 and 8 mm preferably constant according to the X2 axis and equal to 5 mm.
- the diameter D46 of the circular orifice is between 10 and 30 mm and the center C46 of the orifice is at a distance d46 between 20 and 50 mm from the end 21 of the ski 2.
- the cut notch in the core and in the layers 262, 264, 266, 272, 274 and 276 divides the spatula into two parts, called right finger 50 and left finger 51.
- the right finger 50 designates a part of the spatula 4 located right of the notch 28, while the left finger 51 designates a portion of the spatula 4 to the left of the notch 28.
- the fingers 50 and 51 Since the insert 42 is made from a softer material than that constituting the core, the fingers 50 and 51 have the ability to flex independently of one another. Thus, the spatula 4 can deform to adapt to the slope of the slope. In a case of use of the ski 2 where it is arranged perpendicular to the direction of the slope, the two fingers 50 and 51 are slightly offset relative to each other, with the finger upstream side slightly raised relative to the finger downstream side. This elastic deformation of the spatula thus increases the grip and stability of the ski, and therefore the comfort of the user.
- the Figures 10 to 13 describe a fifth embodiment in which the insert is placed at the rear end of the gliding board.
- the ski 2 consists of three parts, a heel 84 forming the rear end of the ski, a body 6 and a spatula 8 forming its front end.
- the ski 2 has a slightly parabolic shape, that is to say that the body 6 is wider at its junctions with the heel 84 and the spatula 8 in its center.
- the ski 2 has a multilayer structure as illustrated on the figures 11 and 13 .
- a core layer constituting the core of the ski, also called core 23, is disposed on a lower multilayer structure 27 and covered with an upper multilayer structure 26.
- the upper multilayer structure 26 is composed, from top to bottom, of a coating layer 262, an upper reinforcement 263, an aluminum layer 264 and an intermediate layer 266.
- the lower multilayer structure 27 is composed from top to bottom of a lower reinforcement 273, a layer aluminum 274, an intermediate layer 276, a sole 272 and integrates edges 271, deposited around the sole 272.
- the heel 84 comprises, on its rear end portion, an insert 42 implanted between the upper intermediate layer 266 and the lower reinforcement 273 and which extends the core 23 of the ski 2 towards the rear.
- the upper reinforcements 263 and lower 273 may comprise fibers, in particular carbon or Kevlar, or be made of metal, aluminum for example.
- the insert 42 is made of a material of greater rigidity and / or greater hardness than the material constituting the core 23.
- the core may be known in wood or foam, while the insert 42 may for example consist of one or more thermoplastics. In particular, good results are obtained by producing the thermoplastic polyurethane insert.
- the covering layer 262 is evenly distributed and has an upper surface 267, parallel to the axes X2 and Y2 and a chamfered edge 268.
- the edge 268 forms an edge 269 with the surface 267.
- L4 is the length of the heel 84 measured, along the axis X2, between the rear end 22 of the ski 2 and the straight line 421.
- the lengths L2 and L4 are respectively between 1200 and 2000 mm and between 50 and 150 mm.
- the width of the bead is noted 84.
- the width l 4 of the heel 84 is decreasing along the X2 axis, going backward. In other words, the width l 4 of the heel 84 is necessarily smaller than the width of the ski measured at the level of the line 421 or the body 6.
- the heel 84 has a generally trapezoidal outer shape, and its rear corners 43 are rounded.
- the layers of coating 262, aluminum 264 and intermediate 266, form a band 844, generally trapezoidal, extending from the front of the heel 4 to the rear end 22 of the ski 2. This band 844 does not extend to the right 50 and left 51 side edges of the heel.
- the strip 844 leaves, on either side of the axis X2, two fins 45 and 47 of the insert 42 not covered by the coating layers 262, aluminum 264 and intermediate layers 266. These fins 45 and 47 are on the other hand covered by the upper reinforcement 263.
- the coating layer 262 covering the layers 264 and 266, is the only one visible on the figures 1 and 3 , apart from the reinforcement 263.
- the sole 272, aluminum 274 and intermediate 276 layers form a strip 846 extending from the front of the heel 84 to the rear end of the ski.
- This band 846 leaves the two fins 45 and 47 of the insert 42 uncovered by the lower layers 272, 274 and 276.
- the fins 45 and 47 are covered on the underside by the lower reinforcement 273.
- the sole 272 covers the layers 274. and 276.
- the portion of the layers 262, 264 and 266 lying at the heel 84 is marked 2624, 2644 and 2664 respectively.
- 2634 is the rear portion of the reinforcement 263 at the heel 84, this portion being wider than the portions 2624, 2644, 2664.
- the strips 844 and 846 are substantially of the same size and superimposed along the axis Z2.
- the strips 844 and 846 being symmetrical along the axis X2, the fins 45 and 47 are also symmetrical along the axis X2 and of substantially the same dimensions.
- the invention has been described above when it is implemented with a ski touring. It is also applicable with other types of board, including other types of skiing, or surfing.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1400674A FR3018697B1 (fr) | 2014-03-20 | 2014-03-20 | Planche de glisse et methode de fabrication d'une telle planche |
FR1400673A FR3018696B1 (fr) | 2014-03-20 | 2014-03-20 | Planche de glisse et methode de fabrication d'une telle planche |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2921210A1 true EP2921210A1 (de) | 2015-09-23 |
EP2921210B1 EP2921210B1 (de) | 2017-07-05 |
Family
ID=52686063
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15000805.0A Active EP2921210B1 (de) | 2014-03-20 | 2015-03-18 | Snowboard und herstellungsmethode eines solchen snowboards |
EP15000804.3A Not-in-force EP2921209B1 (de) | 2014-03-20 | 2015-03-18 | Snowboard und herstellungsmethode eines solchen snowboards |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15000804.3A Not-in-force EP2921209B1 (de) | 2014-03-20 | 2015-03-18 | Snowboard und herstellungsmethode eines solchen snowboards |
Country Status (1)
Country | Link |
---|---|
EP (2) | EP2921210B1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000038801A1 (fr) * | 1998-12-28 | 2000-07-06 | Nidecker S.A. | Planche de glisse |
EP1902758A1 (de) * | 2006-09-22 | 2008-03-26 | Salomon S.A. | Snowglideboard with a longitudinal slot on at least one end |
WO2009000496A1 (de) * | 2007-06-28 | 2008-12-31 | KÄSTLE GmbH | Ski |
EP2602009A1 (de) * | 2011-12-05 | 2013-06-12 | Skis Rossignol | Strukturelement eines Schneegleitbretts und mit diesem Element ausgestattetes Schneegleitbrett |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2618078B1 (fr) * | 1987-07-15 | 1994-04-01 | Salomon Sa | Ski a face superieure divergente |
AT394811B (de) * | 1988-09-23 | 1992-06-25 | Head Sportgeraete Gmbh | Ski |
FR2804335B1 (fr) * | 2000-01-28 | 2002-04-19 | Salomon Sa | Planche de glisse destinee a la pratique du surf sur neige |
ATE416827T1 (de) * | 2000-08-16 | 2008-12-15 | K 2 Corp | Snowboard mit partieler seitenwand |
FR2947461B1 (fr) * | 2009-07-06 | 2011-06-10 | Rossignol Sa | Planche de glisse sur neige |
-
2015
- 2015-03-18 EP EP15000805.0A patent/EP2921210B1/de active Active
- 2015-03-18 EP EP15000804.3A patent/EP2921209B1/de not_active Not-in-force
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000038801A1 (fr) * | 1998-12-28 | 2000-07-06 | Nidecker S.A. | Planche de glisse |
EP1902758A1 (de) * | 2006-09-22 | 2008-03-26 | Salomon S.A. | Snowglideboard with a longitudinal slot on at least one end |
WO2009000496A1 (de) * | 2007-06-28 | 2008-12-31 | KÄSTLE GmbH | Ski |
EP2602009A1 (de) * | 2011-12-05 | 2013-06-12 | Skis Rossignol | Strukturelement eines Schneegleitbretts und mit diesem Element ausgestattetes Schneegleitbrett |
Also Published As
Publication number | Publication date |
---|---|
EP2921209A1 (de) | 2015-09-23 |
EP2921209B1 (de) | 2017-10-18 |
EP2921210B1 (de) | 2017-07-05 |
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