EP1669113A1 - Fixation de ski - Google Patents

Fixation de ski Download PDF

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Publication number
EP1669113A1
EP1669113A1 EP04028966A EP04028966A EP1669113A1 EP 1669113 A1 EP1669113 A1 EP 1669113A1 EP 04028966 A EP04028966 A EP 04028966A EP 04028966 A EP04028966 A EP 04028966A EP 1669113 A1 EP1669113 A1 EP 1669113A1
Authority
EP
European Patent Office
Prior art keywords
ski
support member
boot
respect
binding according
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.)
Withdrawn
Application number
EP04028966A
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German (de)
English (en)
Inventor
Mikael Östberg
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP04028966A priority Critical patent/EP1669113A1/fr
Publication of EP1669113A1 publication Critical patent/EP1669113A1/fr
Withdrawn legal-status Critical Current

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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
    • A63C9/00—Ski bindings
    • A63C9/02—Non-self-releasing bindings with swivel sole-plate or swivel parts, i.e. Ellefsen-type

Definitions

  • the present invention relates to a ski binding for connecting a ski boot to a cross-country ski allowing pivoting of the boot with respect to the ski about an axis extending substantially perpendicularly to the longitudinal direction of the ski for lifting the heal of the boot away from the ski when pushing away.
  • ski binding is applicable to cross-country skis of the type used for competitions, for physical training or only as a means of transport.
  • discussion below will mainly be directed to the ski racing application, since the demands put on such ski bindings are particularly high in that application.
  • Ski bindings of this type have to allow said pivoting of the boot with respect to the ski for making it possible to efficiently push away when skiing at a high speed, and the skier does then in many situations experiences a considerable degree of instability. This is particularly the case when using the skating technique, which is the reason why the invention will hereinafter be particularly discussed with respect to that technique, although ski bindings of this type may be used for other skiing techniques, such as the classic technique, as well.
  • ski bindings comprises a clamp secured to the ski and adapted to receive a pin transversely arranged on the front end of a ski boot while allowing pivoting of the boot with respect to the ski around this pin (see appended fig 1).
  • a pin transversely arranged on the front end of a ski boot while allowing pivoting of the boot with respect to the ski around this pin
  • the sole has to be flexible for enabling lifting of the heel of the boot, which results in a flexibility of the boot also in the lateral direction and by that instability of the boot.
  • the object of the present invention is to provide a ski binding of the type defined in the introduction being improved in at least some respect with respect to such ski bindings already known.
  • This object is according to the invention obtained by providing such a ski binding with an attachment to be secured to the ski, a rigid member pivotally connected to said attachment about a pivot axis above the upper surface of the ski and adapted to support a said ski boot as well as means adapted to fix said ski boot to said support member so that said pivot axis will be located under said boot in the longitudinal direction of the ski behind the intended location of a tip of a foot to be received in said boot.
  • the stability of the connection between the ski boot and the ski will be improved substantially with respect to ski bindings of this type already known. This is especially the case in the last part of the pushing away phase, which was previously rather unsteady, especially when skating, but which for the ski binding according to the present invention will be surprisingly steady thanks to both the rigid connection between the ski boot and the ski thanks to said rigid support member and the location of the pivot axis now being under the ski boot instead of in front of the toe portion thereof.
  • ski boots Thanks to the stability of the binding and by that of the boot, no high and rigid support members reaching over the ankle are necessary on the boot as present on conventional boots for the skating technique, but lower ski boots may be used instead. This results in a better mobility of the ankle region of the skier, so that the foot may be laterally more inclined when desired for adaption to the nature of the snow layer under the ski. This improves the possibility to obtain an optimum pushing away phase.
  • Another advantage of the possibility to use such ski boots is that the weight thereof may be reduced.
  • the maximum speed obtainable when skiing under certain conditions may be increased by using a ski binding according to the present invention instead of such ski bindings already known.
  • said means is adapted to fix said ski boot to said support member so that said pivot axis will be located 3-9 centimetres behind the intended location of a tip of a foot to be received in said boot. It will in this way be possible to ensure that said pivot axis is arranged so that the force exerted on the ski during the last part of the pushing away phase will be directed from the middle foot substantially straight through said pivot axis onto the ski for resulting in an efficient pushing away.
  • This force had for ski bindings already known of the type discussed above a tendency to bend the front part of the ski boot, since the force from the foot was applied at a substantial distance behind the pivot axis.
  • said means to fix said ski boot to said support member so that said pivot axis will be located behind the rear end of the big toe of a foot to be received in said boot. It is then possible to obtain that the pushing away force will be transferred from the foot to the ski in an optimum way.
  • said attachment is adapted to be secured to a ski so as to position said pivot axis for said support member substantially at the point of balance of said ski. It is preferred to position the pivot axis of a ski binding of this type substantially at the point of balance of a ski for obtaining best possible performances of the ski.
  • the ski binding comprises an arrangement allowing a ski boot fixed to said support member by said fixing means to be offset with respect to a longitudinal central line of said ski, i.e. laterally displaced towards one of the longitudinal borders of the ski.
  • a ski boot fixed to said support member by said fixing means it is preferred to have the ski boot arranged to be offset with respect to said central line of the ski in the direction towards the inner edge of the ski, i.e. the edge gripping into the snow layer when pushing away.
  • said arrangement is adapted to allow an adjustment of the degree of said lateral displacement.
  • the lateral displacement may be adjusted to be an optimum with respect to the conditions prevailing.
  • the displacement may be as large as possible when skiing on snow in the form of a hard snow crust, when only the inner edge is used for the skiing, while said displacement may be reduced for skating on a soft snow layer, in which also a part of the gliding surface under the ski is used when skiing according to the skating technique.
  • said fixing means and said support member are designed to allow said ski boot to be laterally displaced with respect to said support member for being fixed in different positions with respect thereto.
  • This is one preferred way of obtaining said lateral displacement
  • another is to provide said arrangement with means for connecting said support member to said attachment laterally displaced towards one of the longitudinal borders of a ski, which may constitute an easier way to obtain a larger lateral displacement.
  • These two embodiments may also be combined, so that for instance a major lateral displacement may be obtained by said connecting means and a final fine adjustment by displacing the ski boot with respect to the support member.
  • said means for laterally displacing the support member comprises a spacer arranged on a pin-member defining said pivot axis and acting on said support member for removing it with respect to one lateral side of said attachment and by that laterally displace the support member with respect to said ski.
  • the lateral displacement aimed at may by simple means, efficiently and reliably be realised in this way.
  • said arrangement is adapted to allow a conversion of said lateral displacement from one of said longitudinal borders of a ski to the other.
  • This is a very preferred feature of the present invention, since after a certain period of use of a ski for skating the inner edge thereof will be worn out, so that the skiing will not be that efficient any more and the ski would without this possibility have to be discarded.
  • the lateral displacement of the ski boot with respect to the central line of the ski will then be changed to be towards the other longitudinal border of the ski, so that the left and right ski will change position and the previous outer edges of the skis will now be the inner edges.
  • said pin-member defining said pivot axis is designed to be removable with respect to said attachment and with respect to said support member for enabling arrangement of said spacer at either side of said support member for removing this with respect to either of two lateral sides of the attachment and by that towards an optional of the two longitudinal borders of the ski. This is an easy way to obtain said conversion by simply moving said spacer from one side of the support member to the other.
  • said means for fixing said ski boot to said support member is adapted to secure the ski boot to the support member in the front region and in the rear region of the boot, through which it may be ensured that the support member will act as would it be an integral part of the ski boot.
  • the ski binding comprises means adapted to store potential energy upon pivoting of said support member from a position in which the heel of a said ski boot rests through the support member onto the ski for influencing said support member back to this position in absence of outer forces thereupon.
  • said energy storing means comprises a spring arranged to act between said attachment and the support member for storing potential energy when pivoting said support member away from said position.
  • a suitable resistance to said pivoting may be obtained by an appropriate dimensioning of such an energy storing means, which has a stabilising effect upon the skiing.
  • the ski binding comprises a first engagement member arranged on the lower side at the rear of the support member and a second engagement member to be secured on top of a said ski, and these engagement members comprise female and male portions, respectively, adapted to come into engagement when the rear portion of said support member carrying the heel of a said ski boot is pivoted down towards the ski for stabilising the support member with respect to lateral movements in this position thereof.
  • a ski binding for connecting a ski boot to a cross-country ski provides pivoting of the boot with respect to the ski about an axis extending substantially perpendicular to the longitudinal direction of the ski and being located in front of the toe portion of the foot of the skier for lifting the heel of the boot away from the ski when pushing away.
  • the force applied to the ski boot by contracting the muscles of the thigh of the skier will be transferred to the ski at a position well behind said pivoting axis resulting in the disadvantages described above.
  • the ski binding comprises an attachment 1 to be secured to the ski, for instance by screws, in the mid region thereof.
  • This attachment has two lateral wings 2, 3 (see fig 6) with holes 4, 5 for defining a pivot axis extending substantially perpendicularly to the longitudinal direction of the ski 6.
  • a rigid member 7 is pivotally connected to the attachment 1 about said pivot axis in a way to be described more in detail below and adapted to support a ski boot 8.
  • Means 9, 10, for instance in the form of screws and nuts, are adapted to fix the ski boot 8 to the support member 7 so that said pivot axis 11 will be located under the boot in the longitudinal direction of the ski behind the intended location of a tip of a foot to be received in said boot, and more exactly close behind the rear end of the big toe of a foot to be received in the boot and stiffening this.
  • the support member extend under substantially the entire ski boot and is secured thereto both in the front region and the rear region of the boot, so that it will in the practice act as an integral part of the ski boot and stiffening this.
  • the attachment 1 is adapted to be secured to a ski so that the pivot axis 11 will be located substantially at the point of balance (centre of gravity) of the ski, which is important when the ski is lifted from the ground.
  • a pin-member formed by a tube 12 having a length corresponding to the distance between the wings 2, 3 is adapted to be pushed through a tube or hole 13 at the end of the support member 7 (only a part of this member is shown in fig 6), which has an inner diameter substantially corresponding to the outer diameter of the tube 12.
  • Screws 14, 15 are secured to the opposite sides of the tube 12 having an internal thread, so that the pivot axis 11 is defined by the centre axis of the tube 12.
  • a spacer 16 in the form of a sleeve having a larger outer diameter than the inner diameter of the hole 13 and an inner diameter at least as large as the outer diameter of the tube 12 is arranged on the tube 12 on one side of the tube 13 removing this by the length of the spacer from one 2 of the wings.
  • a lateral displacement of the support member 7 and by that of a ski boot fixed thereto towards one longitudinal border of the ski will be achieved.
  • This lateral displacement with respect to a longitudinal centre line of the ski will be substantially half the length of the spacer 16.
  • said displacement will be towards the longitudinal border 17 of the ski.
  • lateral grooves 21, 22 may be provided either in the bottom of the ski boot or in the support member 7 for enabling further adjustment of the lateral displacement of the ski boot 8 with respect to the ski 6.
  • a spring member 23 is connected to the support member 7 and it has one free end at each side of the support member. It is shown in fig 4 how one 24 of these free ends is adapted to bear against a stop member 25 arranged on a lateral wing of the attachment at the side towards which the support member 7 is displaced.
  • This spring 23 is adapted to store potential energy when the support member is pivoted away from the position (indicated by dashed lines in fig 4) in which the heel of a ski boot rests through the support member onto the ski for influencing the support member back to this position in absence of outer forces thereupon and to provide a certain resistance when lifting the heel portion of the ski boot for stabilizing this movement.
  • the ski binding also comprises a first engagement member in the form of a recess 26 arranged on the lower side at the rear of the support member 7 and a second engagement member 27 in the form of a row of projections 28 to be secured on top of the ski while extending transversely thereto.
  • Two projections 28 are in this case adapted to come into engagement with said recess 26 when the support member is pivoted down towards the ski for stabilizing the support member with respect to lateral movements in this position thereof.
  • the lateral displacement of the support member with respect to the ski decides which two projections 28 will enter the recess 26 in this position.
  • ski bindings of this type will be the same as for ski bindings of this type already known.
  • the skier will be able to assume a much more steady state during the pushing away phase, and the force applied by the legs through the foot towards the ski and the snow layer will have a more advantageous direction and be more distinct.
  • the ski boot will have a position with respect to the ski close to that shown in fig 3 during the end of this pushing away phase, which means that the force applied to the ski through the middle foot region of the foot will be directed substantially through the pivot axis 11. This means that the force will be directed substantially through the point of balance of the ski, which is preferable with respect to the result of said pushing away.
  • a ski binding according to another preferred embodiment of the invention is shown in fig 7. This differs from that according to fig 2-6 only by the way of fixing the ski boot 8 to the support member 7. It is here shown how this may be achieved in a way similar to that used for for instance bicycles shoes by simply pressing male members 29, 30, here in the front and rear region of the ski boot, into engagement with female members 31, 32 on the support member for being caught therein by snap-in lock members 33, 34, which may then easily be opened when the ski boot is to be removed again.
  • a number of other possibilities to secure the ski boot to a support member of a ski binding according to the present invention are possible.
  • the support member may have any other shape than that shown in the figures, and it is also within the present invention to have the support member formed as an integral part of a ski boot by that having a stiffened portion under the sole for forming the sole of the ski boot.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP04028966A 2004-12-07 2004-12-07 Fixation de ski Withdrawn EP1669113A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04028966A EP1669113A1 (fr) 2004-12-07 2004-12-07 Fixation de ski

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04028966A EP1669113A1 (fr) 2004-12-07 2004-12-07 Fixation de ski

Publications (1)

Publication Number Publication Date
EP1669113A1 true EP1669113A1 (fr) 2006-06-14

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ID=34927677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04028966A Withdrawn EP1669113A1 (fr) 2004-12-07 2004-12-07 Fixation de ski

Country Status (1)

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EP (1) EP1669113A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009077410A1 (fr) * 2007-12-19 2009-06-25 Krueger, Clemens Élément de liaison entre une chaussure et un moyen de déplacement
JP2014012137A (ja) * 2012-07-02 2014-01-23 One Way Sport Oy スキー、ブーツ、及びスキーとブーツ間のビンディング
US20200139220A1 (en) * 2017-06-22 2020-05-07 Backwards Spólka Z Ograniczona Odpowiedzialnoscia Binding allowing lifting of the front as well as the heel of the users foot
EP3935984A1 (fr) * 2020-07-09 2022-01-12 Madshus AS Botte de ski dotée d'une structure de connexion pour mouvement pivotant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6079717A (en) * 1997-10-08 2000-06-27 Viking Schaatsenfabriek B.V. Clap skate
EP1034819A2 (fr) * 1999-03-01 2000-09-13 Martin Dipl. Ing. Breuer-Bono Fixation pour ski de randonnée avec méchanisme à double articulation
US20020008359A1 (en) * 2000-07-18 2002-01-24 Douglas Glass In-line racing skate propulsion device
US20020079658A1 (en) * 1999-05-06 2002-06-27 Maarten Bobbert Connecting organ
WO2003013669A1 (fr) * 2001-08-10 2003-02-20 F.B.C. Di Giuliano Frati & C. S.N.C. Dispositif perfectionne permettant de fixer une chaussure a un article de sport

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6079717A (en) * 1997-10-08 2000-06-27 Viking Schaatsenfabriek B.V. Clap skate
EP1034819A2 (fr) * 1999-03-01 2000-09-13 Martin Dipl. Ing. Breuer-Bono Fixation pour ski de randonnée avec méchanisme à double articulation
US20020079658A1 (en) * 1999-05-06 2002-06-27 Maarten Bobbert Connecting organ
US20020008359A1 (en) * 2000-07-18 2002-01-24 Douglas Glass In-line racing skate propulsion device
WO2003013669A1 (fr) * 2001-08-10 2003-02-20 F.B.C. Di Giuliano Frati & C. S.N.C. Dispositif perfectionne permettant de fixer une chaussure a un article de sport

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009077410A1 (fr) * 2007-12-19 2009-06-25 Krueger, Clemens Élément de liaison entre une chaussure et un moyen de déplacement
JP2014012137A (ja) * 2012-07-02 2014-01-23 One Way Sport Oy スキー、ブーツ、及びスキーとブーツ間のビンディング
US20200139220A1 (en) * 2017-06-22 2020-05-07 Backwards Spólka Z Ograniczona Odpowiedzialnoscia Binding allowing lifting of the front as well as the heel of the users foot
US11697057B2 (en) * 2017-06-22 2023-07-11 Backwards Spółka Z Ograniczoną Odpowiedzialnością Binding allowing lifting of the front as well as the heel of the users foot
EP3935984A1 (fr) * 2020-07-09 2022-01-12 Madshus AS Botte de ski dotée d'une structure de connexion pour mouvement pivotant

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