WO2008139019A1 - Construction pour une fixation de ski et une chaussure de ski - Google Patents

Construction pour une fixation de ski et une chaussure de ski Download PDF

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Publication number
WO2008139019A1
WO2008139019A1 PCT/FI2007/000127 FI2007000127W WO2008139019A1 WO 2008139019 A1 WO2008139019 A1 WO 2008139019A1 FI 2007000127 W FI2007000127 W FI 2007000127W WO 2008139019 A1 WO2008139019 A1 WO 2008139019A1
Authority
WO
WIPO (PCT)
Prior art keywords
ski
boot
binding
construction
sole
Prior art date
Application number
PCT/FI2007/000127
Other languages
English (en)
Inventor
Jukka Järvinen
Original Assignee
Startex Oy
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 Startex Oy filed Critical Startex Oy
Priority to EP07730596.9A priority Critical patent/EP2146788A4/fr
Priority to PCT/FI2007/000127 priority patent/WO2008139019A1/fr
Priority to US12/599,420 priority patent/US20100287794A1/en
Priority to CA002685885A priority patent/CA2685885A1/fr
Publication of WO2008139019A1 publication Critical patent/WO2008139019A1/fr
Priority to NO20093479A priority patent/NO20093479L/no

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/20—Non-self-releasing bindings with special sole edge holders instead of toe-straps

Definitions

  • the invention relates to the construction for a ski binding and a ski boot for coupling the ski boot to the ski as defined in the preamble of claim 1.
  • the coupling shaft forms a support point between the boot and the ski right at the tip of the boot, such that only the tips of the toes contact the binding as the foot area rises. In practice, this causes the entire foot area being raised such that the controllability of the ski becomes unstable. Similarly, toward the final stage of the kick, as the heel rises, the pressure applied to the toes increases, causing pain and black- ened toes. If instead one selects a larger boot, the controllability becomes even worse.
  • the flexible element used in the wedge-shaped space limits the kick and directs forces to a wrong direction.
  • the solution improves controllability, it has many deficiencies as to the production of force, and at the same time critically limits the natural movement of the foot area and the toes .
  • the binding constructions described above are not suitable for skate style skiing; instead a binding application has been developed therefore, manufactured by Salomon, wherein, in addition to the coupling at the front section of the toes, the boot is supported on the ski under the ball of the foot by means of a mechanism which limits the lifting of the boot from the ski to a spe- cific angle.
  • the application serves as a controlling construction, but it does not provide any appreciable improvement to correcting the direction of the kick.
  • Rottefella which seeks to obtain rigidity by modifying the rigidity of the flexible element positioned in front of the boot, and by reinforcement of the sole of the boot.
  • the objective of the invention is to elimi- nate the drawbacks referred to above.
  • One specific objective of the invention is to disclose a novel coupling of a ski boot to a ski binding, such that the kick force can be directed optimally, the force maintained as long as possible, and the movements of the foot with respect to the ski directed as naturally for the human foot as possible.
  • the construction for a ski binding and a ski boot in accordance with the invention is characterized by what has been presented in claim 1.
  • the construction for a ski binding and a ski boot in accordance with the invention is designed for coupling a ski boot from its front section to a ski and allowing the lifting of the heel section of the ski boot from the ski .
  • the ski binding comprises a coupling mechanism for coupling the ski boot to the binding.
  • the ski boot comprises a transverse rotation axis coupled to the sole thereof, the axis being perpendicular to the longitudinal direction of the sole, for coupling the ski boot by means of the coupling mechanism to an axial locking provided on the ski .
  • the sole of the ski boot comprises a toe section, a ball section, an arched section, and a heel section.
  • the rotation axis is cou- pled to the sole of the boot such that the toe section of the sole of the boot is positioned in front of the rotation axis.
  • the area under the toe section of the sole and in front of the rotation axis and the axial locking, below the horizontal plane defined by the rotation axis comprises a substantially free space in which the toe section of the sole of the ski boot is able to bend down when the boot is bent about the rotation axis when lifting the heel section from the ski.
  • the rotation axis and the axial locking do not necessarily mean a concrete, straight and rigid axle and a corresponding groove; instead the terms should be understood as being used in the general sense.
  • the substantial feature is an articulated, rotating coupling between the sole of the boot and the soleplate or between the sole of the boot and the ski, which allows the rotation of the sole of the boot with respect to the ski or to the soleplate in a hinge-like manner about a specific, concrete or imagined, rotation axis.
  • the substantially free space is formed by a recess formed in the soleplate and, therefore, possibly in the ski as well.
  • the sole of the ski boot can be substantially linear in the longitudinal direction.
  • the substantially free space is formed partly by the shape of the soleplate and partly by the shape of the toe section in the sole of the boot.
  • the substantially free space is formed by a recess in the ski structure.
  • the space is partly formed by the shape of the toe section of the sole.
  • the rotation axis may preferably be positioned 20-80mm backwards from the front tip of the ski boot. In one embodiment, it is positioned at a distance of 30-60mm from the front tip of the ski boot, the preferable distance being about 40-50mm. It is, of course, natural that the above-mentioned distance cannot be set as a specific number of millimeters; in- stead it varies according to the skier's boot size, i.e. substantially according to the length of the skier's toes.
  • the position of the rotation axis, as well as the limit between the toe section and the ball section may be defined as being substantially under the first joint of the hallux of the skier's foot.
  • Said limit may also be defined such that the toe section is the front section of the sole of the boot, to which the force applied downward by the toes is substantially entirely directed, i.e. more specifically, the area on which the three biggest toes are pressed as the heel is raised in the air.
  • the rotation axis which is straight and perpendicular to the longitudinal direction of the ski and the sole of the ski boot cuts the arched line between the toe section and the ball section. Since the arched line, departing from the root of the hallux, arches backward toward the other edge, the areas covering the biggest toes in the toe section of the sole of the ski boot are positioned in front of the rotation axis.
  • the pressing force of the skier's toes i.e. the force applied from the skier's foot to the toe section of the sole, is thus directed downward mainly in front of the rotation axis .
  • the space in front of the rotation axis may be completely open, such that the toe section of the sole of the ski boot is able to freely bend in that area during a kick without any friction. In this case, however, the movement of the ski boot easily becomes insensitive and difficult to control.
  • the space is, therefore, preferably only substantially open, i.e. free, i.e. a suitable elastic flexible element or other suitable elastic construction is placed therein, which element, when having a suitable contact to the bottom of the space and to the toe section of the sole of the ski boot, entirely prevents any frictionless or free bending of the boot.
  • the flexible ele-ment Although any spring construction, bellow construction, air chamber, or other solution having sufficient flexibility can be used as the flexible ele- ment , it is preferably realized by means of a suitably elastic rubber or plastic element which, compressing for example for 50-80% and then reassuming its original shape, allows the ski boot to establish a sufficiently large rotation angle about its rotation axis.
  • the flexible element may fill the entire space, or it may be so formed that it covers only a portion of the space volume. It is also possible that it protrudes out of the space, but the portion protruding out is not substantially significant for the func- tioning of the flexible element.
  • the protruding portion may be used, for example, for coupling the element to the ski binding.
  • One preferred embodiment of the invention comprises several flexible elements which can be coupled to the ski binding and differ from each other by their elastic properties. This enables the use of the same bindings in different skiing conditions and when skiing in both classic style and skate style just by changing a flexible element with different elastic properties to the binding.
  • the rotation axis used for locking the ski binding in accordance with the invention is not positioned at the tip of the boot, but instead clearly on the rear of the toe section, to some extent even on the ball area, the locking provides a significantly better and firmer horizontal torsional rigidity to the boot with respect to the ski than the traditional locking mechanisms right at the tip of the boot. Even so, one or more guiding ridges positioned along the length of the ski and directed backward from the axial locking can preferably be used on the sole- plate. These ensure, especially in skate style skiing, that the boot is held in place during the start phase of the kick.
  • the sub- stantial feature is that the front section of the boot, i.e. the toe section of the sole, bends down and moves substantially in a vertical direction in front of the locking of the boot, i.e. the rotation axis.
  • the lever formed by the toe section in front of the rotation axis can be pressed down by the toes during normal, natural skiing to intensify the increase in pressure caused by the bending of the boot. This results in achieving a significantly more effective pressure between the ski and the snow than with the known solutions, and at the same time obtaining a better and easier grip than before.
  • the entire grip zone of the ski is in contact with snow also during the final phase of the kick, providing a better grip than with the known constructions.
  • the free space formed under the front sec- tion of the boot i.e. the toe section
  • the front section of the foot i.e. the toes
  • the movement of the foot in this case is natural, and even when moving in a walking-like manner, the grip zone of the ski is efficiently pressed against snow, improving even further the grip of a grip-waxed ski .
  • the movement of the foot directs the force efficiently and correctly.
  • the binding construction in accordance with the invention has many significant advantages: it is firmer and therefore safer; it has a better controllability; it provides a better and more precise grip, so that the grip zone of the base can be shortened and the slide zone lengthened; the improved sliding saves energy; due to better controllability, the ankle joints do not become stressed; a more effective use of the foot area and toes adds power to the kicks and improves blood circulation in the foot area; the increased force and more optimal direction of the kick improve skiing efficiency; and the same binding construction can also be used, only by changing the elastic element, in boots of different sizes, in cross-country skiing and skate style skiing, as well as in touring and telemark skiing.
  • the binding construction in accordance with the invention provides a natural way of moving on skis, and a more effective and firmer kick, thus saving energy for the skier. LIST OF FIGURES
  • FIG. 1 represents a schematic side view of one ski binding and ski boot in accordance with the invention
  • Fig. 2 represents a more detailed top view of the embodiment of Fig. 1
  • Fig. 3 represents a more detailed side view of the embodiment if Fig. 1
  • Fig. 4 represents a schematic side view of one embodiment of the invention
  • Fig. 5 represents a schematic side view of a second embodiment of the invention
  • Fig. 6 represents a schematic side view of a third embodiment of the invention.
  • Fig. 7 represents a schematic side view of the fourth embodiment of the invention
  • Fig. 8 represents a power curve indicating the efficiency of the invention in skate style skiing
  • Fig. 9 represents a power curve indicating the efficiency of the invention in classic style ski- ing.
  • Fig. 1 represents a schematic side view of the construction for a ski boot and a ski binding in accordance with the invention.
  • a soleplate 3 of the ski binding is coupled to a ski 2, the front section of which soleplate comprises a coupling mechanism 4, such as a push button, a lever mechanism, a compression spring, or some other known construction, for coupling a ski boot 1 to the binding.
  • the ski boot 1 is coupled at the sole to the ski binding, the sole being formed, in the order backwards from the tip, by a toe section 7, a ball section 8, an arched section 9 and a heel section 10.
  • An axis which is transverse with respect to the longitudinal direction of the ski, i.e.
  • a rotation axis 5 is coupled substantially at the junction of the toe section 7 and the ball section 8 to the sole of the ski boot for coupling the ski boot to the soleplate 3.
  • the corresponding position on the soleplate 3 comprises an axial locking 6, a con- struction known in the art per se, wherein a groove which is shaped to correspond to the rotation axis comprises locking shoulders which hold the axis in place in the groove.
  • the locking shoulders are connected in a known manner to the coupling mechanism on the front section of the ski binding, from which coupling mechanism the locking can be opened for example by pushing a button.
  • Figs . 2 and 3 comprise a more detailed description of the ski binding and the functioning thereof in accordance with one embodiment of the invention.
  • the binding comprises a soleplate 3 for the ski binding, which soleplate is coupled to a ski 2, the front section of the soleplate comprising a coupling mechanism 4 which is connected, via a coupling 18 indicated in dashed line, to an axial locking 6, positioned farther back in the binding.
  • the locking is formed by a partially open-top groove in which a straight axis stub of a suitable size can be pressed to a locked-up position.
  • the area on the soleplate 3 between the axial locking 6 and the coupling mechanism 4 is mainly formed as a straight surface 19 which slopes down toward the coupling mechanism, both edges of which surface comprising on the soleplate even and horizontal rims 20.
  • a wedge-shaped flexible element 15 of substantially the size of the surface is placed, which element is made from a suitable elastic material, for example rubber.
  • One edge of the flexible element 15 is positioned near the axial locking 6, from which the element extends forward towards the coupling mechanism 4, growing in diameter as it extends, the growth being stronger than the downward sloping of the surface 19.
  • the upper surface of the flexible element 15 is thereby formed to slope upwards from the axial locking 6 toward the coupling mechanism 4.
  • the front section of the sole of the boot 1 which is coupled to the ski binding comprises the toe section 7 and the ball section 8.
  • the toe section 7 of the sole is bent somewhat upward, such that it is parallel to the upper surface of the flexible element 15 and rests against it, whereas the ball section 8 is parallel to the soleplate 3 of the binding.
  • a transverse rotation axis 5 is coupled to the area between the toe section and the ball section on the sole of the ski boot, which axis can be pressed and locked in the corresponding groove in the axial locking 6.
  • the locking can be released by means of a press or a lever, not shown in the figure in any detail, provided in the coupling mechanism 4.
  • the construction for a ski binding and a ski boot in accordance with the invention increases, during the kick phase, in both skate and classic styles, the production of force to the rotation point, because the leverage of the toe section directs the force to the right direction, i.e. more downward. This improves the production and direction of force, and the maneuverability and control of the ski, compared to the prior art.
  • the toe section 7 of the sole in front of the rotation axis 5 reacts to the elastic- ity of the flexible element 15, applying the moment of force, which results from the distance between the rotation axis and the tip of the boot, to the ski.
  • a kick . in classic skiing is thus applied downward, pressing the central area of the ski to the ground and resulting in a mechanical grip.
  • the increased force caused by the moment improves the ski grip and pro- vides the grip to the kick at an earlier phase.
  • the construction provides an advancing kick, furthering the sliding of the ski for example on the flat and during climbing.
  • the increased contact surface area between the boot and the binding provides a better control to different phases of skiing in all horizontal and vertical directions .
  • Fig. 4 represents an embodiment of the invention in which the substantially free space under the toe section of the ski boot is formed solely on the soleplate 3 of the ski binding by shaping it to evenly slope down and forward, from the axial locking 6 to the coupling mechanism 4 of the binding. It this case, the toe section and the ball section of the sole of the boot are straight and parallel with each other.
  • Fig. 5 represents an embodiment of the invention in which the substantially free space under the toe section of the ski boot is formed as in Fig. 4 on the soleplate 3 of the ski binding by shaping it to slope down and forward from the axial locking 6, but here also the toe section of the sole of the boot is shaped to slope slightly upward toward the tip of the boot.
  • the shape of the soleplate forms, in this embodiment as well, the most significant space for the movement of the tip of the boot.
  • Fig. 6 represents an embodiment of the invention in which the substantially free space 13 under the toe section of the ski boot has a horizontal bottom.
  • the toe section of the sole of the ski boot is straight and substantially parallel to the other sections of the sole.
  • Fig. 7 represents an embodiment of the invention in which the substantially free space 21 is formed on the ski 2.
  • the wedge-shaped space 21 which slopes down and forward on the ski, together with the slight upward bending of the toe section of the sole of the boot, form a space which opens and extends forward from the coupling point of the sole of the boot, in which space the tip of the boot, i.e. the toe section, is able to bend during the kick phase when ski- ing.
  • the coupling mechanism 4 is coupled to the ski and is part of the ski, so that the axial locking at the back edge of the wedge-shaped space 21 are connected to the coupling mechanism 4 via the ski construction.
  • Flexible elements of different materials and different shapes can be used in this embodiment as well to provide the desired bending properties to the boot.
  • Fig. 1 represents the embodiment in which the wedge-shaped space is open and empty.
  • the wedge-shaped space is completely filled with the elastic flexible element 15.
  • the elastic flexible element 16 extends, as an evenly wide construction, laterally throughout the entire wedge-shaped space 12 , but along the length of the ski only to the central area of the wedge-shaped space.
  • the flexible element 16 extends from the tip of the wedge-shaped space 14, i.e. from the rotation axis, approximately to the mid point of the length of the wedge-shaped space along the length of the ski.
  • the flexible element 16 is positioned in the center of the wedge- shaped space 13 as in Fig.
  • Figs. 8 and 9 represent measurement results of a comparison between bindings in accordance with the prior art and the binding in accordance with the invention in skate style, Fig. 8, and in classic style, Fig. 9.
  • the curves indicate the force applied to the grip zone of the ski during the kick phase, i.e. when a grip is needed, as a function of time.
  • the lower curve, or the dark area, in the figures represents the traditional binding, and the upper curve represents the solution in accordance with the invention.
  • the force used for a kick which lasts for about one second, increases toward the end of the kick.
  • the forces are nearly equal, but during the latter half of the kick, the boot in the traditional binding begins to bend just about its tip, so that it becomes difficult to increase the force.
  • the toe section bends in front of and below the rotation axis during the final phase of the kick, so that the kick force applied to the ski increases significantly faster, becomes significantly stronger and lasts significantly longer than with traditional bindings.
  • the kick forces applied to the ski are equal for only about 1/3 of the total length of the kick.
  • the flexible part in front of the boot in traditional bindings unexpectedly causes, as the boot starts to bend and the flexible part starts to compress, an instantaneous decrease in the kick force, after which it starts to rise again and reaches its maximum value at about 0,7 seconds, descending steadily thereafter at the end of the kick.
  • the invention does not produce any kind of temporary decrease in the kick force; instead the kick force increases relatively linearly to reach the maximum level which is about 20% greater than with the prior art, and descends rapidly only after about 0,85 seconds.
  • the kick force is, at least for about half of the kick duration, significantly greater, and for about 1/3 of the kick duration at a higher level than the relatively narrow peak that can be reached at the maximum with the traditional binding.
  • a relevant and unexpected feature in the invention is that the results described above can be obtained both in racing and in relaxing recreational skiing, without any specific measures or any effort to learn anything, because the inventive binding construction and the functioning thereof are based on the natural anatomy and functioning of the foot.
  • the invention is not limited merely to the examples of its embodiments referred to above; instead many variations are possible within the scope defined by the claims .

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention concerne une construction pour une fixation de ski et une chaussure de ski, permettant de fixer une chaussure de ski (1) par sa partie avant à un ski (2) et au skieur de soulever la section talon de la chaussure de ski par rapport au ski. La fixation de ski comprend un mécanisme de couplage (4) permettant de coupler la chaussure de ski à la fixation de ski et la chaussure de ski comprend un axe de rotation transversal (5) couplé à la semelle de la chaussure de ski et disposé perpendiculairement au sens longitudinal de la semelle, ledit axe de rotation pouvant être utilisé pour coupler la chaussure de ski, à l'aide d'un mécanisme de verrouillage, à un élément de verrouillage axial (6) situé sur le ski, la semelle de la botte de ski comportant une section orteils (7), une section saillie des orteils (8), une section cambrure (9) et une section talon (10). Selon l'invention, l'axe de rotation (5) est couplé à la semelle de la chaussure de sorte que la section orteils (7) soit positionnée devant l'axe de rotation. En outre, la zone située sous la section orteils (7) de la semelle, respectivement sous le plan horizontal défini par l'axe de rotation (5), comprend un espace sensiblement libre (11) dans laquelle la section orteils de la semelle peut se plier au fur et à mesure que la chaussure est pliée autour de l'axe de rotation, lorsque le skieur lève la section talon (10) par rapport au ski.
PCT/FI2007/000127 2007-05-09 2007-05-09 Construction pour une fixation de ski et une chaussure de ski WO2008139019A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP07730596.9A EP2146788A4 (fr) 2007-05-09 2007-05-09 Construction pour une fixation de ski et une chaussure de ski
PCT/FI2007/000127 WO2008139019A1 (fr) 2007-05-09 2007-05-09 Construction pour une fixation de ski et une chaussure de ski
US12/599,420 US20100287794A1 (en) 2007-05-09 2007-05-09 Construction for a ski binding and a ski boot
CA002685885A CA2685885A1 (fr) 2007-05-09 2007-05-09 Construction pour une fixation de ski et une chaussure de ski
NO20093479A NO20093479L (no) 2007-05-09 2009-12-07 Konstruksjon for en skibinding og en skistovel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2007/000127 WO2008139019A1 (fr) 2007-05-09 2007-05-09 Construction pour une fixation de ski et une chaussure de ski

Publications (1)

Publication Number Publication Date
WO2008139019A1 true WO2008139019A1 (fr) 2008-11-20

Family

ID=40001728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2007/000127 WO2008139019A1 (fr) 2007-05-09 2007-05-09 Construction pour une fixation de ski et une chaussure de ski

Country Status (5)

Country Link
US (1) US20100287794A1 (fr)
EP (1) EP2146788A4 (fr)
CA (1) CA2685885A1 (fr)
NO (1) NO20093479L (fr)
WO (1) WO2008139019A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9370220B2 (en) 2011-08-05 2016-06-21 Peter Slingluff Boot with modified orientation in toe region

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6402184B1 (en) * 1998-03-06 2002-06-11 Rottefella As Binding for cross-country or trail skis

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522512A1 (fr) * 1982-03-05 1983-09-09 Look Sa Ensemble pour ski de fond
DE3306618A1 (de) * 1983-02-25 1984-08-30 Josef 7550 Rastatt Klagmann Verfahren zum herstellen eines skilanglaufschuhes
IT1189885B (it) * 1986-06-20 1988-02-10 Olivieri Icaro & C Puntale per scarpe per sci di fondo
FR2634131B1 (fr) * 1988-07-13 1990-04-27 Salomon Sa Chaussure et semelle notamment pour ski de fond
DE3915531A1 (de) * 1988-07-13 1990-01-18 Salomon Sa Langlaufskibindung
DE4010929A1 (de) * 1990-04-04 1991-10-10 Walter Dekanovsky Langlaufskibindung
DE4343485C1 (de) * 1993-09-14 1995-03-30 Rottefella As Anordnung einer Langlaufskibindung
FR2741543A1 (fr) * 1995-11-27 1997-05-30 Bibollet Jean Claude Fixations pour ski de fond
AT410902B (de) * 1998-11-12 2003-08-25 Atomic Austria Gmbh Schwenkbare verbindungseinrichtung zur anordnung zwischen einem sportgerät und einem fuss eines benutzers sowie schuh und sportgerät hierfür
US6328328B1 (en) * 1998-11-26 2001-12-11 Salomon S.A. Support wedge device for a snowboard binding, and a snowboard binding assembly having such device
WO2001093963A1 (fr) * 2000-06-08 2001-12-13 Rottefella As Ensemble constitue d'une fixation de ski et d'une chaussure de ski
US6371506B1 (en) * 2000-08-04 2002-04-16 Denicola James A. Wedge-shaped shims for free heel skis

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6402184B1 (en) * 1998-03-06 2002-06-11 Rottefella As Binding for cross-country or trail skis

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2146788A4 *

Also Published As

Publication number Publication date
NO20093479L (no) 2009-12-07
EP2146788A4 (fr) 2013-10-16
CA2685885A1 (fr) 2008-11-20
US20100287794A1 (en) 2010-11-18
EP2146788A1 (fr) 2010-01-27

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