EP0020315B1 - Fixation de sécurité pour skis - Google Patents

Fixation de sécurité pour skis Download PDF

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Publication number
EP0020315B1
EP0020315B1 EP80850074A EP80850074A EP0020315B1 EP 0020315 B1 EP0020315 B1 EP 0020315B1 EP 80850074 A EP80850074 A EP 80850074A EP 80850074 A EP80850074 A EP 80850074A EP 0020315 B1 EP0020315 B1 EP 0020315B1
Authority
EP
European Patent Office
Prior art keywords
elements
ski binding
locking means
safety ski
lower leg
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.)
Expired
Application number
EP80850074A
Other languages
German (de)
English (en)
Other versions
EP0020315A1 (fr
Inventor
Erik Trell
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 AT80850074T priority Critical patent/ATE10586T1/de
Publication of EP0020315A1 publication Critical patent/EP0020315A1/fr
Application granted granted Critical
Publication of EP0020315B1 publication Critical patent/EP0020315B1/fr
Expired 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
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0415—Accessories

Definitions

  • the present invention relates to a safety ski binding comprising an openable framing enclosing at least the lower leg of the user of the safety ski binding and including several permanently shaped elements mounted for pivotal movement about axes at the base of the elements, front and back elements thereof being pivotable about axes extending transversely of the ski, and locking means arranged to release at an adjustable allowed maximum force between the lower leg and the framing, for keeping the elements together in the enclosing position of the framing.
  • a ski binding of this type is disclosed in FR-A-2 292 497.
  • the safety ski binding according to the present invention will find the widest use in connection with down-hill skiing, and hence, the invention will be described in connection with the use of the ski binding as a slalom boot.
  • the ski binding of the present invention can, of course, be used wherever there is a risk of injuring feet and legs if such injury is caused by the appearance of too great forces between the user of the ski binding and the ski binding proper.
  • Slalom boots of today have very high shanks which may cause fractures of the lower legs, e.g. when the skier falls forwards and when the conventional safety ski-bindings, usually connecting the ski boot to the ski at the toe and heel portions of the boot, do not release in the normal way.
  • This normal releasing may be prevented e.g. by icing or jamming of the releasing mechanism, but it can also be prevented by downward bending of the ski as well, which means that the toe and heel portions of the safety binding are pressed against the boot and prevent normal releasing.
  • This type of injury and the cause therefor is typical in connection with "tourist-skiing" in slalom hills insufficiently prepared.
  • the lower leg will act as a lever, the upper shank portion of the boot forming the fulcrum.
  • the stress on the lower leg may reach such a magnitude and may occur so suddenly that the safety binding does not always have time to release before a fracture of the lower leg has occurred.
  • the arising stresses on the lower leg may also be too great if the lower leg is somewhat movable in relation to the shank portion of the boot because in that case the lower leg may move in relation to the shank portion of the boot over a limited distance and then may be suddenly stopped in its movement, which provides a shock-loading of the lower leg.
  • the object of the present invention is to provide a safety ski binding, preferably in the form of a ski boot, by the use of which the risk of foot and leg injuries is essentially eliminated.
  • the permanently shaped elements preferably are foldable against the bias of a yieldable force. It is advantageous if this force is progressively increasing and accordingly will be able to restrain gently bending of the lower leg in the ankle-joint.
  • a safety binding according to the present invention will keep the ankle-joint fixed, unless such forces arise between the lower leg and the shank portion of the binding as are able to release the locking means keeping the permanently shaped elements on place against the user's lower leg.
  • An alternative embodiment of the safety ski binding according to the present invention can include a sole attached e.g. to a ski, the pivotable permanently shaped elements being pivoted two and two about longitudinal and transverse axes, respectively, at the base of the elements, positioned in connection with the upper side of the ski.
  • a footwear is used which is kept in position by the pivotable permanently shaped elements of the safety ski binding.
  • the foot carrying the footwar is free to slip out of the binding.
  • the permanently shaped elements then will act as effective braking means of the released ski.
  • the permanently shaped elements have lower inwardly angled portions biased by resilient devices which tend to keep the elements in an unfolded position.
  • a pressure from the footwear will automatically fold back the permanently shaped elements to engage the enclosed footwear and the lower leg of the user, which facilitates the attachment and the removal of the safety ski binding.
  • the locking means used to keep the permanently shaped elements in position against the lower leg and, in the second embodiment, against the enclosed footwear as well, may consist of a spring biased link mechanism, one end of which is attached to a connecting piece of strip, preferably attached to a rearward element of the framing, hook or loop means being placed at the other end of the piece of the strip and co-operating with the link mechanism to lock the permanently shaped elements.
  • the link mechanism may be of a known type and preferably includes at least one lever to provide the locking action, the leverage decreasing progressively at increasing load to a position wherein the locking means will release.
  • a resiliently yieldable member surrounding the shape permanent elements may be attached. Said resilient member will not be released when the locking means is released, but will be progressively tensioned while accumulating energy.
  • the locking means may also comprise adjust- ably yieldable means at one part of the locking means, said yieldable means co-operating with recesses at the other part of the locking means in such a way that the locking means will release at the occurrence of an adjustable predetermined maximum force on the locking means.
  • the detailed construction of the locking means may be of any kind and e.g. may be based on the technique used in conventional safety bindings, wherein spring biased balls engage grooves or recesses between two parts movable in relation to each other. However, they may also include breakpins etc., which are dimensioned to break at a predetermined maximum load.
  • Such breakpins of different strength may be available and provide the advantage that the maximum forces occurring on the skier's lower leg will be transferred directly to the locking means to cause said means to release.
  • the use of a locking means is avoided, which is dependent on the friction between members movable in relation to each other, such friction being difficult to determine.
  • a locking means may be designed in several ways.
  • the breakpin may be positioned e.g. so that it forms simultaneously a pivot of a spanner for tightening stripes or the like locking the framing, around the upper portion of the shank.
  • Such a stripe can also consist of several elements interconnected by breakpins ensuring a safe release of "the locking means" independently of the direction in which the allowable maximum force from the user's lower leg acts onto the shank portion of the footwear.
  • cover-locking stripes only which will break when the allowable maximum force is applied to the shank portion of the ski binding.
  • a practical embodiment of locking stripes and locking means permitting the opening of the framing against a yieldable force comprises a resilient stripe, the resilient elongation of which in a non-released position will be prevented by the stripe being connected in parallel with a non-resilient link stripe consisting of link elements interconnected by breakpins. Then, a satisfactory locking of the different cover elements against the user's lower leg is obtained, the opening of the cover elements against the bias of a yieldable force at the same time being ensured when any of the breakpins is sheared at the appearance of an unallowably great force between the user's lower leg and the shank portion of the ski binding.
  • the breakable stripes and/or the breakpins used for releasing "the locking means" may have different colours or combinations of colours representing different strengths, so as to make possible a correct release when the safety ski binding is used e.g. by skiers, having a body weight and a degree of skill which allow a different magnitude of the permitted maximum force between the skier's lower leg and the shank portion of the ski binding.
  • a well-trained and experienced skier thus may be expected to control great forces appearing between the lower leg and the shank portion of the binding and, accordingly, breakpins/breakable stripes of a greater strength may be used by that skier as compared with the forces between the shank portion of the binding and the lower leg, which can be allowed for less skilful skiers.
  • the openable framing of the safety ski binding may comprise the only releasing mechanism between the user of the ski binding and e.g. a ski or it can comprise a releasing mechanism supplementary to conventional releasing mechanisms acting between the ski and the user.
  • the safety ski binding according to the present invention may be used with or without a footwear in the two embodiments shown herein, the footwear being equipped with a high shank, the upper part of which is formed such that the transfer of the forces from the lower leg to the shank portion of the safety ski binding will not be obstructed.
  • the rear portion of the shank of the footwear thus may be made relatively rigid to counteract to some extent the yieldability of the muscles of the leg, which in some cases may counteract a correct release of the locking means of the safety ski binding.
  • FIG. 1 a ski 1 is shown on which a safety ski binding according to the invention can be releasably attached by conventional releasing mechanisms co-operating with the sole 10 of the ski binding, or the sole 10 of the ski binding is fixedly attached to the upper side of the ski 1.
  • the shank portion of the ski binding consists of several pivotally arranged permanently shaped elements 2-5, forming parts of an openable cover.
  • the permanently shaped elements 2-5 are pivotable about axes 2A-5A at the level of the ankle-joint of the user, possibly against the bias of yieldable forces.
  • FIG. 2 the permanently shaped elements are shown in a locked position engaging the user's lower leg 11, a locking means 8 fixing the elements, being arranged around the upper portions of the elements.
  • This locking means 8 consists of a stripe without or with low resiliency and is held together around the elements by a conventional releasable spanner.
  • the locking means 8 may also be held around the upper portions of the elements by a non-releasable spanner, the releasing action being obtained by using one or more breakpins 14 interconnecting two or more parts of the locking means 8.
  • the ends of the portions of the locking means 8, at which the breakpins are positioned, are suitably arranged as hinges, two places on each breakpin preferably being exposed to shearing caused by a pulling force on the locking means 8.
  • the material of the breakpins is of a decisive importance to obtain a correct operation of the releasable locking means.
  • the material of the breakpins suitably should have a low shearing strength to make possible a release within permitted limits by the dimensioning of the breakpins, because the forces which shall release the locking means will be relatively small, although disastrous consequences will arise if such forces are exceeded.
  • a resiliently yieldable member 12 may be arranged around the permanently shaped elements to obtain a yieldable force against which the elements can be opened subsequent to releasing of the locking means.
  • the resilient member 12 can be engaged around the permanently shaped elements by means of a conventional spanner 13.
  • this resilient member 12 may be arranged in parallel with the locking means 8 and then may be tightened by means of one and the same spanner.
  • the resiliently yieldable member in that case can be positioned inside the locking means 8.
  • the safety ski binding of this invention consists of a cover 2'-5' which can be fully opened, enclosing a soft shoe or inner boot 6.
  • the cover consists of rigid shell members and comprises two side portions 2' and 3' and a front portion 4' and a back portion 5'. These portions are pivoted about longitudinal and transverse axes, respectively, between an open position (FIG. 3) and a closed enclosing position (FIG. 4).
  • the different portions 2'-5' of the cover have lower inwardly directed edge portions 2a-5a which are positioned and can be actuated in such a way that a pressure from the sole 7 of the inner shoe or boot 6 provides an automatic folding of said different parts.
  • the releasable locking member 9 is of the kind which opens automatically when a predetermined maximum force is applied between the ends of the locking band 8'.
  • the inner boot 6 will be removed from the opened portions of the cover when the locking means has been released.
  • the rigid elements of the cover may be manufactured of carbon fiber reinforced plastics which provides the necessary rigidity of the elements 2-5, and also imparts to these elements a favourable low weight.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Ropes Or Cables (AREA)

Claims (10)

1. Fixation de sécurité pour skis, comprenant une carcasse susceptible d'être ouverte qui entoure au moins la partie inférieure (11) de la jambe de l'utilisateur de la fixation de sécurité pour skis et qui comporte plusieurs éléments (2-5), mis en forme de manière permanente, montés de façon à pouvoir pivoter autour d'axes (2A-5A) à la base des éléments (2-5), les éléments avant et arrière de cet ensemble d'éléments étant capables de pivoter autour d'axes s'étendant transversalement par rapport au ski, et des moyens d'immobilisation (8), agencés de façon à lâcher lors de l'application d'une force maximale réglable admissible entre la partie inférieure (11) de la jambe de l'utilisateur et la carcasse, pour maintenir ensemble les éléments (2-5) dans la position dans laquelle la carcasse entoure ladite partie de la jambe, caractérisée en ce que lesdits éléments (2-5) comprennent des éléments latéraux (2-3) capables de pivoter autour d'axes s'étendant longitudinalement par rapport au ski (1 ) et en ce que lesdits moyens d'immobilisation (8) enveloppent lesdits éléments, à leurs parties supérieures, de manière à pouvoir subir l'action d'une force transmise à la carcasse par la partie inférieure (11) de la jambe, dans n'importe quelle direction radiale par rapport à celle-ci, avec déclanchement subséquent des moyens d'immobilisation (8) et, par conséquent, ouverture de ladite carcasse lors d'un dépassement de la force maximale admissible fixée.
2. Fixation de sécurité pour skis selon la revendication 1, caractérisée en ce que les éléments mis en forme de manière permanente (2-5) sont agencés de manière à pouvoir être ouverts contre l'action antagoniste d'une force de rappel élastique.
3. Fixation de sécurité pour skis selon la revendication 2, caractérisée en ce que la force de rappel élastique est telle qu'elle augmente progressivement au cours de l'ouverture des éléments de forme permanente (2-5).
4. Fixation de sécurité pour skis selon la revendication 2 ou 3, caractérisée en ce que la force de rappel élastique est réglable.
5. Fixation de sécurité pour skis selon l'une des revendications précédentes, caractérisée en ce que les éléments mis en forme de manière permanente (2-5) forment la partie de tige de la carcasse, ces éléments étant pivotés au niveau de la cheville de l'utilisateur.
6. Fixation de sécurité pour skis selon la revendication 1, caractérisée en ce que les éléments mis en forme de manière permanente (2-5) sont montés en pivotement sur une semelle (10) de la fixation de sécurité pour skis, fixée sur un ski (1).
7. Fixation de sécurité pour skis selon la revendication 6, caractérisée en ce que les éléments mis en forme de manière permanente (2-5) ont des parties inférieures, obliquant vers l'intérieur (2a-5a), soumises à l'action antagoniste d'organes élastiques qui tendent à maintenir ces éléments (2-5) en position d'ouverture.
8. Fixation de sécurité pour skis selon la revendication 6, caractérisée en ce que les moyens d'immobilisation (8) comprennent un mécanisme de liaison (9) comprenant un ressort de rappel, fixé à l'une des extrémités d'une pièce d'attache en forme de bande (8'), qui est de préférence fixée sur un élément de couverture arrière (5'), une pièce en forme de crochet ou de boucle étant disposée à l'autre extrémité de la bande et coopérant avec le mécanisme de liaison (9) de façon à immobiliser les éléments mis en forme de manière permanente (2-5).
9. Fixation de sécurité pour skis selon la revendication 1, caractérisée en ce qu'au moins une goupille de rupture (14) est disposée entre différents organes faisant partie des moyens d'immobilisation (8), de manière à relier ces organes entre eux, le déclanchement des moyens d'immobilisation (8), lorsque la force maximale prédéterminée entre la partie inférieure (11) de la jambe de l'utilisateur est dépassée, se produisant par cisaillement de la goupille de rupture (14).
10. Fixation de sécurité pour skis selon la revendication 1, caractérisée en ce que les moyens d'immobilisation (8) consistent en un organe souple non-élastique continu dont la résistance est telle que cet organe se rompt lorsque la force maximale admissible entre la partie inférieure (11) de la jambe et les éléments mis en forme de manière permanente (2-5) est dépassée.
EP80850074A 1979-05-21 1980-05-20 Fixation de sécurité pour skis Expired EP0020315B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80850074T ATE10586T1 (de) 1979-05-21 1980-05-20 Sicherheitsbindung fuer ski.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7904421 1979-05-21
SE7904421 1979-05-21

Publications (2)

Publication Number Publication Date
EP0020315A1 EP0020315A1 (fr) 1980-12-10
EP0020315B1 true EP0020315B1 (fr) 1984-12-05

Family

ID=20338104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80850074A Expired EP0020315B1 (fr) 1979-05-21 1980-05-20 Fixation de sécurité pour skis

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EP (1) EP0020315B1 (fr)
AT (1) ATE10586T1 (fr)
DE (1) DE3069740D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8215660B2 (en) 2004-08-02 2012-07-10 The Burton Corporation Convertible toe strap

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979319A (en) * 1986-06-02 1990-12-25 Hayes Jaye B Ski boot and sport shoe assembly
US4747221A (en) * 1986-06-02 1988-05-31 Hayes Jaye B Ski boot and sport shoe assembly
JPS645501A (en) * 1987-06-29 1989-01-10 Yamaha Corp Ski boots
US5295316A (en) * 1989-09-12 1994-03-22 Lange International, S.A. Ski boot with overlapping shaft members
US5107608A (en) * 1990-10-02 1992-04-28 Arthur Kreitenberg Safety releasing ski boot
FR2670653B1 (fr) * 1990-12-20 1993-12-10 Salomon Sa Chaussure de ski alpin a entree par l'arriere.
AT401332B (de) * 1993-09-27 1996-08-26 Tyrolia Freizeitgeraete Sportschuh
DE19527320A1 (de) * 1995-07-26 1997-01-30 Stefan Lederer Sportstiefel
FR2772630B1 (fr) * 1997-12-24 2000-03-03 Tech Sports Loisirs Perfectionnement pour raquette a neige
WO2019169581A1 (fr) * 2018-03-07 2019-09-12 孙寅贵 Chaussure de ski

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317408C2 (de) * 1972-04-17 1982-12-23 Etablissements François Salomon et Fils, 74011 Annecy, Haute-Savoie Skischuh
DE2434218B2 (de) * 1974-07-16 1976-06-24 Rieder, Walter, 8000 München Skischuh bestehend aus aussen- und innenschuh
CH587668A5 (fr) * 1974-11-28 1977-05-13 Salomon & Fils F

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8215660B2 (en) 2004-08-02 2012-07-10 The Burton Corporation Convertible toe strap

Also Published As

Publication number Publication date
DE3069740D1 (en) 1985-01-17
ATE10586T1 (de) 1984-12-15
EP0020315A1 (fr) 1980-12-10

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