EP0738479B1 - Shoe with flexure control of the quarter - Google Patents
Shoe with flexure control of the quarter Download PDFInfo
- Publication number
- EP0738479B1 EP0738479B1 EP96100143A EP96100143A EP0738479B1 EP 0738479 B1 EP0738479 B1 EP 0738479B1 EP 96100143 A EP96100143 A EP 96100143A EP 96100143 A EP96100143 A EP 96100143A EP 0738479 B1 EP0738479 B1 EP 0738479B1
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- EP
- European Patent Office
- Prior art keywords
- shell base
- transmission arm
- rod
- shock absorbing
- absorbing element
- 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 - Lifetime
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- 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
- A43B5/0427—Ski or like boots characterised by type or construction details
- A43B5/0452—Adjustment of the forward inclination of the boot leg
- A43B5/0454—Adjustment of the forward inclination of the boot leg including flex control; Dampening means
- A43B5/0456—Adjustment of the forward inclination of the boot leg including flex control; Dampening means with the actuator being disposed at the rear side of the boot
Definitions
- the present invention relates to rigid shell ski boots comprising a shell base surmounted by an at least partially pivoting rod and relates to a device for controlling the flexion intended to cushion elastically the supports of the lower leg of the skier which are applied on the rod and which force it to pivot relative to the shell base, and to ensure its elastic return in position initial as soon as said supports cease.
- Known ski boots of this type are generally provided with bending control devices capable of absorbing, over a certain amplitude of the rod's pivoting movement, the skier's lower leg supports on this last.
- These bending control devices usually employ means deformable elastics working in compression and / or bending, and which, when released, restore enough energy to return the upper of the shoe to its initial position.
- the means the most commonly used elastics are metal springs such as steel. Indeed, these can bear major deformations and return fairly faithfully to their original shape that they were bent, stretched, compressed or twisted many times.
- elastic means obtained from elastically compressible materials of the elastomer type are also used to act as springs.
- these elements elastic ensure, when compressed to block, the retention of the upper of the shoe pivoting forward. In doing so, they completely fill the space where they are trapped and tend thus deforming the walls of the rod and of the shell base which are contiguous to them. If otherwise water and / or snow infiltrates their housing, the possible pivoting of the rod is disturbed because the elastic elements can no longer be compressed completely since part of the space they have is occupied by it.
- ski boots having elastic shock absorbing elements of rubbery appearance and thin which are sandwiched between the walls of the rod and of the shell base to absorb vibrations, shocks, etc ..., i.e. all trips from very low amplitude.
- damping elements significantly reduce the short forces but do not do not allow, in particular, a gradual pivoting of amplitude at least sufficient to allow a flexion perceptible by the skier. In fact, such elements do not control the flexibility of the rod.
- ski boots have elements which have a certain viscosity, and which are interposed between the rod and the shell base to absorb shock and vibration.
- elastic shock absorbing elements these viscous elements which also absorb shock and vibrations of low amplitude, allow the pivoting of the rod by constituting what is called a viscous friction.
- they are unable to bring the upper of the shoe back into position. initial as soon as the efforts and / or solicitations cease. In fact, these devices only manage one sliding friction from one surface to another.
- the present invention proposes to remedy the drawbacks of the devices for controlling the bending above in a simple and effective way guaranteeing at the same time a low damping amplitude for short shocks and vibrations, and progressive and large amplitude damping for the stresses and efforts maintained with return to the initial position as soon as these cease.
- the invention also proposes a very perceptible device capable of immediately transmitting and directly the stresses applied on the upper part of the rod to the damping element.
- the object of the invention is achieved by providing a damping element of viscoelastic material very thick which is interposed between the rod and the shell base, and which is made to work shear rather than compression, using a transmission arm which intervenes directly between the top of the shoe upper and the shell base via the element depreciation, the periphery of the latter being provided completely clear to allow its transverse deformation.
- the ski boot has a first shell element or base surmounted by a second element or rod provided with a bending control device intended to dampen the supports of the bottom of leg of the skier over a certain amplitude in pivoting of said rod relative to the hull base.
- the flexure control device has an elastically deformable viscoelastic damping means which intervenes between the rod and the shell base.
- the shoe is characterized by the fact that the device bending control consists of a transmission arm and the damping element obtained in viscoelastic material in the form of a very thick block with two faces approximately parallel, the transmission arm extending from the top of the rod to the base of shell which it connects to each other by means of the damping element sandwiched by its faces between at least one of its ends and the component of the shoe located opposite.
- the upper of the shoe is thus suspended elastically around its pivot axis on the hull base flexed forwards and backwards, its range of travel being essentially a function of the elastic shear capacity of the element damper.
- the damping element is located in the lower part of the rod in the area of the heel and the transmission arm, of elongated shape, extends substantially parallel to the wall of the shell base, one of its ends being rigidly fixed to the upper part of the rod while the other end, free and spaced from the wall of the shell base, is connected to the latter by through the viscoelastic damping element.
- the transmission arm has the general shape of a "T" whose upper end, formed by the horizontal bar, is fixed on either side of the area dorsal of the stem and at its center, while the lower end, ending the vertical bar, is connected to the damping element.
- a refinement of this method of construction consists in providing on the lower part of the rod in the heel area where the lower end of the traction arm extends, a wrapping rim intended to mask the damping element and under which slides, through an opening, said end of the traction arm.
- the bending control device has its range of travel limited in the direction of pivoting backwards from an angular position determined at by means of a stop interacting between the rod and the shell base.
- the bending control device has its amplitude of travel limited by pivoting backwards and forwards by means of at least one stop interacting between the rod and the shell base.
- FIG. 1 and 2 illustrate a ski boot whose upper is provided with the device for controlling the bending of which the viscoelastic damping element works in shear
- FIG. 1 representing, schematically, the shoe seen in longitudinal section
- Figure 2 the shoe seen from behind.
- FIGS. 3, 4, 5 and 6 show another ski boot with a device for controlling the bending of the type of that of the shoe of FIGS. 1 and 2, cooperating with at least one stop of limitation of the amplitude of movement of the rod, and provided with an element wrap rim shock absorber, FIGS. 3 and 4 being views in longitudinal section of the shoe, and FIGS. 5 and 6 exterior views, respectively in elevation and from behind.
- the ski boot comprising a first element such as a shell base 1 provided with a sole 31 is surmounted by a second element such as a rod 2 mounted at least partially pivoting on axes 3, and has, in the dorsal zone 4 of the rod 2, a device for controlling the flexion 5.
- This device 5 consists of a transmission arm 6 secured to the top 8 of the rod 2, and of an element shock absorber 7 of viscoelastic material interacting between the rod 2 and the shell base 1 by the transmission arm 6 interposed.
- the latter of elongated shape, for example comparable to a "T" as visible in Figure 2, is fixed by its upper end 11 on either side of the area dorsal 4 of the rod 2, at 9, and at its center 10. It extends substantially parallel to the wall 1 'of the shell base 1, and its other end 12, free and spaced from the wall 1 ', is connected to the latter through the damping element 7.
- the damping element 7 has the shape of a very thick block which is fixed by two faces opposite 17 preferably substantially parallel on corresponding fixing zones 17 ′, located one on the end 12 of the transmission arm 6, and the other on the wall 1 'of the shell base 1.
- the rod 2 is advantageously provided with a transverse rim 13 in its lower rear part 14. This rim 13 is intended to sealing between the wall of the rod 2 and the wall 1 'of the shell base 1 which is covered in the corresponding area.
- the clearance made on its periphery 15 avoids imprisoning and / or forcing said element 7 against one of the walls of the rod 2 and / or of the shell base 1 or between stops, and thus does not no need to provide reinforcements.
- the rod 2 is suspended elastically around its axes 3 pivot, any movement forward and / or rear simultaneously causing and directly the elastic deformation of the damping element 7.
- the arm being fixed at the top of the rod 2, any stress applied to it is transmitted instantly and practically without loss of the damping element 7, which considerably reduces the response time.
- the skier thus benefits from a flexion control device 5 which is progressive and damping over a large amplitude, insensitive to water, snow, etc. infiltration, capable of recalling rod 2 in initial position as soon as the stresses stop, and very noticeable by the skier.
- the shoe includes a device bending control 5 which is associated with a rod 22 limited in travel in the direction of a pivoting backwards from a determined angular position by means of a stop 26-27.
- This stop consists of a flange 26 produced on the wall of the shell base 1, above of the fixing zone of the damping element 7, and of a complementary flange 27 produced on the wall of the rod 2.
- This stop 26-27 blocks the rod 22 in pivoting backwards in an angular position determined, at angle ⁇ , relative to the plane of the sole 31 of the shell base 1.
- the rod 22 is provided with a wrapping rim 23 in its lower part. posterior 14.
- This rim 23 advantageously covers the entire damping element 7, leaving free its periphery 15 and is provided with an opening 24 through which the free end 12 of the transmission arm 6.
- the rod 22 thus produced has a relatively continuous outer surface in which the flexure control device 5 is perfectly integrated.
- a transverse projection 25 with a progressive profile is obtained on the shell 1 base facing screw of the rim 23 and at a distance therefrom to allow the possible evacuation of water and / or snow which would have infiltrated between the rod 22 and the shell base 1.
- a stop limits the amplitude of its pivoting 28 towards the front in addition to the stop 26-27 which acts by pivoting towards the rear.
- it is the stops which determine the maximum amplitude of the possible pivoting of the rod 22. It goes without saying that this amplitude of pivoting is advantageously limited to that of the elastic deformation acceptable by the damping element 7.
- FIGS. 1 to 6 shows the implementation of a bending control device 5 whose viscoelastic damping element 7 is fixed on the base of shell 1 in the heel area, and the transmission arm 6 of which is secured to the top 8 of the upper 2, 22. It is understood that this bending control device 5 can also be mounted at the reverse, that is to say by fixing the damping element 7 on the top 8 of the rod 2, 22, and the arm of transmission 6 on the hull base 1 in the heel area.
- the bending control device 5 always transmits the stresses applied to the top 8 of the rod 2, 22, directly to the damping element 7 which remains forced to work on the shearing of the made of its attachment to the free end of the transmission arm 6 which is then secured to the base of shell 1.
- Another example of possible implementation of the device for controlling the bending 5 of the rod 2, 22, relative to the shell base 1 consists in connecting each of the ends 11 and 12 of the arm of transmission 6 to a viscoelastic damping element 7 fixed one on the rod 2, 22, the other on the base shell 1.
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- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
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Abstract
Description
La présente invention concerne les chaussures de ski à coque rigide comportant une base de coque surmontée d'une tige au moins partiellement pivotante et se rapporte à un dispositif de contrôle de la flexion destiné à amortir élastiquement les appuis du bas de jambe du skieur qui s'appliquent sur la tige et qui la forcent à pivoter par rapport à la base de coque, et à assurer son renvoi élastique en position initiale dès que cessent lesdits appuis.The present invention relates to rigid shell ski boots comprising a shell base surmounted by an at least partially pivoting rod and relates to a device for controlling the flexion intended to cushion elastically the supports of the lower leg of the skier which are applied on the rod and which force it to pivot relative to the shell base, and to ensure its elastic return in position initial as soon as said supports cease.
Les chaussures de ski connues de ce type, comme décrit dans le brevet US 4 078 322 par exemple,
sont dotées généralement de dispositifs de contrôle de la flexion aptes à amortir, sur une certaine
amplitude de déplacement en pivotement de la tige, les appuis du bas de jambe du skieur sur cette
dernière. Ces dispositifs de contrôle de la flexion mettent habituellement en oeuvre des moyens
élastiques déformables travaillant à la compression et/ou à la flexion, et qui, lorsqu'ils sont relâchés,
restituent suffisamment d'énergie pour ramener la tige de la chaussure dans sa position initiale.
Compte tenu de l'amplitude du déplacement en pivotement de la tige par rapport à la base de coque
nécessaire pour obtenir un amortissement progressif et souple, donc confortable, les moyens
élastiques les plus usités sont les ressorts en métal tel que l'acier. En effet, ceux-ci
peuvent supporter
d'importantes déformations et reprendre assez fidèlement leur forme initiale qu'ils aient été pliés,
tendus, comprimés ou tordus un grand nombre de fois. Par contre, ces ressorts sont sensibles à
l'oxydation, donc nécessitent d'être protégés ou traités et présentent quelques risques de rupture
intempestive notamment suite à des chocs ou en cas de dépassement de leur flèche maximum
admissible. De plus, les ressorts classiques en métal se révèlent être difficiles à intégrer dans les
chaussures sans grever le volume de celles-ci et/ou le coût. C'est notamment le cas lorsqu'ils sont
conçus avec des formes spécifiques pour être insérer dans le volume général de la coque de la
chaussure tel que décrit dans le document FR 2 498 431 par exemple.Known ski boots of this type, as described in US Pat. No. 4,078,322 for example,
are generally provided with bending control devices capable of absorbing, over a certain
amplitude of the rod's pivoting movement, the skier's lower leg supports on this
last. These bending control devices usually employ means
deformable elastics working in compression and / or bending, and which, when released,
restore enough energy to return the upper of the shoe to its initial position.
Taking into account the amplitude of the pivoting movement of the rod relative to the shell base
necessary to obtain a progressive and flexible damping, therefore comfortable, the means
the most commonly used elastics are metal springs such as steel. Indeed, these
can bear
major deformations and return fairly faithfully to their original shape that they were bent,
stretched, compressed or twisted many times. However, these springs are sensitive to
oxidation, therefore need to be protected or treated and present some risks of rupture
untimely especially following shocks or if their maximum deflection is exceeded
eligible. In addition, conventional metal springs prove to be difficult to integrate into
shoes without encumbering their volume and / or cost. This is particularly the case when they are
designed with specific shapes to be inserted in the general volume of the shell of the
shoe as described in
Pour ces questions de coût, de volume, de facilité de mise en oeuvre et d'insensibilité à l'oxydation,
des moyens élastiques obtenus en matériaux élastiquement compressibles du type élastomères sont
également utilisés pour faire office de ressorts. On peut citer à titre d'exemple les documents
DE 80 20 898 et FR 2 498 061 où il est enseigné des chaussures de ski dont les dispositifs de contrôle
de la flexion emploient des éléments en matériau élastiquement compressible tel que de l'élastomère,
c'est-à-dire un matériau viscoélastique. Ces éléments sont interposés avec un certain jeu entre les
parois de la tige et de la base de coque et sont maintenus en translation entre deux butées situées
dans la zone du talon, à distance de l'axe d'articulation et de ladite tige sur la base de coque. Ainsi,
lorsque la tige pivote sur la base de coque sous l'effet de sollicitations venues du bas de jambe du
skieur et/ou du ski, l'élément élastique se trouve comprimé entre les deux butées et augmente de
volume dans le sens transversal en comblant plus ou moins tout l'espace dans lequel il se trouve
prisonnier. Dès que les sollicitations en pivotement cessent, l'élément élastique se détend et ramène la
tige dans sa position initiale par rapport à la base de coque, assurant ainsi la fonction de "renvoi
élastique". Ces dispositifs de contrôle de la flexion donnent relativement satisfaction mais présentent
cependant l'inconvénient de nécessiter, d'une part, une protection particulière pour éviter les
infiltrations d'eau, de neige, etc..., dans les logements de leurs éléments élastiquement compressibles,
et d'autre part, de prévoir des renforts sur les parties contiguës à ces derniers. En effet, ces éléments
élastiques assurent, lorsqu'ils sont comprimés à bloc, la retenue de la tige de la chaussure en
pivotement vers l'avant. Ce faisant, ils comblent totalement l'espace où ils sont prisonniers et tendent
ainsi à déformer les parois de la tige et de la base de coque qui leur sont contiguës. Si par ailleurs de
l'eau et/ou de la neige s'infiltre dans leurs logements, le pivotement possible de la tige est perturbée
car les éléments élastiques ne peuvent plus se comprimer à bloc puisqu'une partie de l'espace dont ils
disposent est occupée par celle-ci.For these questions of cost, volume, ease of implementation and insensitivity to oxidation,
elastic means obtained from elastically compressible materials of the elastomer type are
also used to act as springs. We can cite as an example the documents
DE 80 20 898 and
Un autre inconvénient, dû à la structure de tous les dispositifs de contrôle de la flexion dont l'élément amortisseur est situé dans la zone du talon, est relatif à la mauvaise transmission des efforts et/ou des appuis du bas de jambe du skieur du haut de la tige jusqu'à l'élément amortisseur. En effet, l'élément amortisseur étant situé à une grande distance du haut de la tige et de l'axe d'articulation de celle-ci, une grande partie des sollicitations et des appuis venant du bas de jambe du skieur se diffuse dans la paroi de ladite tige, de sa bordure supérieure jusqu'à son axe d'articulation, puis jusqu'à la zone du talon avant de solliciter l'élément amortisseur. Il résulte que cette structure des dispositifs de contrôle de la flexion ne permet pas de transmettre directement et instantanément les sollicitations, mais au contraire les retarde occasionnant un temps de réponse assez long, ce qui est perturbant pour le skieur.Another drawback, due to the structure of all the bending control devices including the shock absorbing element is located in the heel area, relates to the poor transmission of efforts and / or support from the lower leg of the skier from the top of the rod to the damping element. In effect, the damping element being located at a great distance from the top of the rod and the axis articulation thereof, a large part of the stresses and supports coming from the lower leg of the skier diffuses into the wall of said rod, from its upper edge to its axis of articulation, then to the heel area before applying the shock absorbing element. It follows that this structure of bending control devices does not allow direct and instantaneous transmission of requests, but on the contrary delays them causing a fairly long response time, which is disturbing for the skier.
Il est également connu des chaussures de ski comportant des éléments amortisseurs élastiques d'aspect caoutchouteux et de faible épaisseur qui sont pris en sandwich entre les parois de la tige et de la base de coque pour amortir les vibrations, les chocs, etc..., c'est-à-dire tous les déplacements de très faible amplitude. Ces éléments amortisseurs réduisent notablement les efforts brefs mais ne permettent pas, notamment, un pivotement progressif d'amplitude au moins suffisante pour autoriser une flexion perceptible par le skieur. En fait, de tels éléments ne contrôlent pas la flexibilité de la tige.It is also known ski boots having elastic shock absorbing elements of rubbery appearance and thin which are sandwiched between the walls of the rod and of the shell base to absorb vibrations, shocks, etc ..., i.e. all trips from very low amplitude. These damping elements significantly reduce the short forces but do not do not allow, in particular, a gradual pivoting of amplitude at least sufficient to allow a flexion perceptible by the skier. In fact, such elements do not control the flexibility of the rod.
Encore, d'autres chaussures de ski sont dotées d'éléments qui présentent une certaine viscosité, et qui sont interposés entre la tige et la base de coque pour amortir les chocs et vibrations. A l'inverse des éléments amortisseurs élastiques, ces éléments visqueux qui amortissent également les chocs et vibrations de faible amplitude, permettent le pivotement de la tige en constituant ce que l'on appelle un frottement visqueux. Par contre, ils sont incapables de ramener la tige de la chaussure en position initiale dès que les efforts et/ou sollicitations cessent. En fait, ces dispositifs ne gèrent qu'un frottement de glissement d'une surface sur une autre.Still, other ski boots have elements which have a certain viscosity, and which are interposed between the rod and the shell base to absorb shock and vibration. Conversely elastic shock absorbing elements, these viscous elements which also absorb shock and vibrations of low amplitude, allow the pivoting of the rod by constituting what is called a viscous friction. However, they are unable to bring the upper of the shoe back into position. initial as soon as the efforts and / or solicitations cease. In fact, these devices only manage one sliding friction from one surface to another.
La présente invention se propose de remédier aux inconvénients des dispositifs de contrôle de la flexion ci-avant de manière simple et efficace garantissant à la fois un amortissement de faible amplitude pour les chocs et vibrations brefs, et un amortissement progressif et de grande amplitude pour les sollicitations et efforts maintenus avec rappel en position initiale dès que ceux-ci cessent. Egalement, l'invention propose un dispositif très perceptible apte à transmettre immédiatement et directement les sollicitations appliquées sur la partie haute de la tige à l'élément d'amortissement.The present invention proposes to remedy the drawbacks of the devices for controlling the bending above in a simple and effective way guaranteeing at the same time a low damping amplitude for short shocks and vibrations, and progressive and large amplitude damping for the stresses and efforts maintained with return to the initial position as soon as these cease. The invention also proposes a very perceptible device capable of immediately transmitting and directly the stresses applied on the upper part of the rod to the damping element.
L'objet de l'invention est atteint en prévoyant un élément amortisseur en matériau viscoélastique de forte épaisseur qu'on interpose entre la tige et la base de coque, et qu'on fait travailler au cisaillement plutôt qu'à la compression, à l'aide d'un bras de transmission qui intervient directement entre le haut de la tige de la chaussure et la base de coque par l'intermédiaire de l'élément d'amortissement, le pourtour de ce dernier étant prévu totalement dégagé pour permettre sa déformation transversale.The object of the invention is achieved by providing a damping element of viscoelastic material very thick which is interposed between the rod and the shell base, and which is made to work shear rather than compression, using a transmission arm which intervenes directly between the top of the shoe upper and the shell base via the element depreciation, the periphery of the latter being provided completely clear to allow its transverse deformation.
La chaussure de ski comporte un premier élément ou base de coque surmontée d'un deuxième élément ou tige pourvue d'un dispositif de contrôle de la flexion destiné à amortir les appuis du bas de jambe du skieur sur une certaine amplitude en pivotement de ladite tige par rapport à la base de coque. Le dispositif de contrôle de la flexion présente un moyen d'amortissement viscoélastique élastiquement déformable qui intervient entre la tige et la base de coque. La chaussure se caractérise par le fait que le dispositif de contrôle de la flexion est constitué d'un bras de transmission et de l'élément amortisseur obtenu en matériau viscoélastique se présentant sous la forme d'un bloc de forte épaisseur avec deux faces approximativement parallèles, le bras de transmission s'étendant du haut de la tige jusqu'à la base de coque qu'il relie entre elles par l'intermédiaire de l'élément amortisseur placé en sandwich par ses faces entre l'une au moins de ses extrémités et l'élément constitutif de la chaussure situé en vis à vis.The ski boot has a first shell element or base surmounted by a second element or rod provided with a bending control device intended to dampen the supports of the bottom of leg of the skier over a certain amplitude in pivoting of said rod relative to the hull base. The flexure control device has an elastically deformable viscoelastic damping means which intervenes between the rod and the shell base. The shoe is characterized by the fact that the device bending control consists of a transmission arm and the damping element obtained in viscoelastic material in the form of a very thick block with two faces approximately parallel, the transmission arm extending from the top of the rod to the base of shell which it connects to each other by means of the damping element sandwiched by its faces between at least one of its ends and the component of the shoe located opposite.
Grâce à cette structure, les sollicitations appliquées sur le haut de la tige sont transmises directement à l'élément amortisseur qui, pris en sandwich entre l'extrémité du bras de transmission et la base de coque ou la tige, est contraint de travailler au cisaillement. Sa forte épaisseur et ses caractéristiques élastiques déterminent les conditions d'amortissement, notamment en amplitude et en progressivité, ainsi que la force du rappel élastique en position initiale de la tige dès que les sollicitations cessent.Thanks to this structure, the stresses applied to the top of the rod are transmitted directly to the damping element which, sandwiched between the end of the transmission arm and the shell base or the rod, is forced to work in shear. Its great thickness and elastic characteristics determine the damping conditions, in particular in amplitude and progressiveness, as well as the force of the elastic return to the initial position of the rod as soon as the solicitations cease.
La tige de la chaussure est ainsi suspendue élastiquement autour de son axe de pivotement sur la base de coque en flexion vers l'avant et vers l'arrière, son amplitude de débattement étant essentiellement fonction de la capacité de déformation élastique en cisaillement de l'élément amortisseur.The upper of the shoe is thus suspended elastically around its pivot axis on the hull base flexed forwards and backwards, its range of travel being essentially a function of the elastic shear capacity of the element damper.
Préférentiellement, l'élément amortisseur est situé dans la partie basse de la tige dans la zone du talon et le bras de transmission, de forme allongée, s'étend sensiblement parallèlement à la paroi de la base de coque, une de ses extrémités étant fixée rigidement à la partie haute de la tige tandis que l'autre extrémité, libre et espacée de la paroi de la base de coque, est reliée à cette dernière par l'intermédiaire de l'élément d'amortissement viscoélastique.Preferably, the damping element is located in the lower part of the rod in the area of the heel and the transmission arm, of elongated shape, extends substantially parallel to the wall of the shell base, one of its ends being rigidly fixed to the upper part of the rod while the other end, free and spaced from the wall of the shell base, is connected to the latter by through the viscoelastic damping element.
Selon un mode de construction avantageux, le bras de transmission a la forme générale d'un "T" dont l'extrémité supérieure, constituée par la barre horizontale, se fixe de part et d'autre de la zone dorsale de la tige et à son centre, tandis que l'extrémité inférieure, terminant la barre verticale, est reliée à l'élément amortisseur.According to an advantageous construction method, the transmission arm has the general shape of a "T" whose upper end, formed by the horizontal bar, is fixed on either side of the area dorsal of the stem and at its center, while the lower end, ending the vertical bar, is connected to the damping element.
Un perfectionnement de ce mode de construction consiste à prévoir sur la partie basse de la tige dans la zone du talon où s'étend l'extrémité inférieure du bras de traction, un rebord d'enveloppement destiné à masquer l'élément amortisseur et sous lequel se glisse, à travers une ouverture, ladite extrémité du bras de traction.A refinement of this method of construction consists in providing on the lower part of the rod in the heel area where the lower end of the traction arm extends, a wrapping rim intended to mask the damping element and under which slides, through an opening, said end of the traction arm.
Selon un mode de réalisation, le dispositif de contrôle de la flexion a son amplitude de débattement limitée dans le sens d'un pivotement vers l'arrière à partir d'une position angulaire déterminée au moyen d'une butée interagissant entre la tige et la base de coque. According to one embodiment, the bending control device has its range of travel limited in the direction of pivoting backwards from an angular position determined at by means of a stop interacting between the rod and the shell base.
Selon un autre mode de réalisation, le dispositif de contrôle de la flexion a son amplitude de débattement limitée en pivotement vers l'arrière et vers l'avant au moyen d'au moins une butée interagissant entre la tige et la base de coque.According to another embodiment, the bending control device has its amplitude of travel limited by pivoting backwards and forwards by means of at least one stop interacting between the rod and the shell base.
L'invention sera mieux comprise en se reportant à la description qui va suivre en référence au dessins schématiques annexés montrant, à titre d'exemple, deux modes de réalisation de celle-ci.The invention will be better understood by referring to the description which follows with reference to attached schematic drawings showing, by way of example, two embodiments thereof.
Les figures 1 et 2 illustrent une chaussure de ski dont la tige est dotée du dispositif de contrôle de la flexion dont l'élément amortisseur viscoélastique travaille en cisaillement, la figure 1 représentant, schématiquement, la chaussure vue en coupe longitudinale, et la figure 2 la chaussure vue de derrière.Figures 1 and 2 illustrate a ski boot whose upper is provided with the device for controlling the bending of which the viscoelastic damping element works in shear, FIG. 1 representing, schematically, the shoe seen in longitudinal section, and Figure 2 the shoe seen from behind.
Les figures 3, 4, 5 et 6, montrent une autre chaussure de ski avec un dispositif de contrôle de la flexion du type de celui de la chaussure des figures 1 et 2, coopérant avec au moins une butée de limitation de l'amplitude de débattement de la tige, et dotée d'un rebord d'enveloppement de l'élément amortisseur, les figures 3 et 4 étant des vues en coupe longitudinale de la chaussure, et les figures 5 et 6 des vues extérieures, respectivement en élévation et de derrière.Figures 3, 4, 5 and 6 show another ski boot with a device for controlling the bending of the type of that of the shoe of FIGS. 1 and 2, cooperating with at least one stop of limitation of the amplitude of movement of the rod, and provided with an element wrap rim shock absorber, FIGS. 3 and 4 being views in longitudinal section of the shoe, and FIGS. 5 and 6 exterior views, respectively in elevation and from behind.
La chaussure de ski comportant un premier élément tel qu'une base de coque 1 munie d'une semelle
31 est surmontée d'un deuxième élément tel qu'une tige 2 montée au moins partiellement pivotante sur
des axes 3, et présente, dans la zone dorsale 4 de la tige 2, un dispositif de contrôle de la flexion 5. Ce
dispositif 5 est constitué d'un bras de transmission 6 solidaire du haut 8 de la tige 2, et d'un élément
amortisseur 7 en matériau viscoélastique interagissant entre la tige 2 et la base de coque 1 par le
bras de transmission 6 interposé. Ce dernier, de forme allongée, par exemple comparable à un "T"
comme visible à la figure 2, est fixé par son extrémité 11 supérieure de part et d'autre de la zone
dorsale 4 de la tige 2, en 9, et en son centre 10. Il s'étend sensiblement parallèlement à la paroi 1' de la
base de coque 1, et son autre extrémité 12, libre et espacée de la paroi 1', est relié à cette dernière
par l'intermédiaire de l'élément amortisseur 7.The ski boot comprising a first element such as a shell base 1 provided with a sole
31 is surmounted by a second element such as a
L'élément amortisseur 7 a la forme d'un bloc de forte épaisseur qui est fixé par deux faces
opposées 17 de préférence sensiblement parallèles sur des zones de fixation 17' correspondantes,
situées l'une sur l'extrémité 12 du bras de transmission 6, et l'autre sur la paroi 1' de la base de coque
1.The
Compte tenu de la forte épaisseur de l'élément amortisseur 7, la tige 2 est avantageusement
pourvue d'un rebord transversal 13 dans sa partie basse postérieure 14. Ce rebord 13 est destiné à
assurer l'étanchéité entre la paroi de la tige 2 et la paroi 1' de la base de coque 1 qui est recouverte
dans la zone correspondante.Given the large thickness of the
Afin de permettre les déformations en cisaillement de l'élément amortisseur 7, transversalement à
ses zones de fixation 17', son pourtour 15 est totalement dégagé et le rebord transversal 13
suffisamment éloigné de la zone de fixation 17' située sur la paroi 1' de la base de coque 1 pour
autoriser le basculement de la tige 2 vers l'arrière, au moins dans les limites élastiques de l'élément
amortisseur 7. Cette disposition permet d'éviter toute accumulation ou infiltration d'eau, de neige,
etc..., entre l'élément amortisseur 7 et l'une quelconque des parties constitutives de la chaussure qui le
porte, la tige 2 ou la base de coque 1. De plus, comme l'élément amortisseur 7 travaille au cisaillement,
le dégagement réalisé sur son pourtour 15 évite d'emprisonner et/ou de contraindre ledit élément 7
contre l'une des parois de la tige 2 et/ou de la base de coque 1 ou entre des butées, et ainsi ne
nécessite pas de prévoir des renforts.In order to allow the shear deformations of the
Il résulte de cette construction que la tige 2 se trouve suspendue élastiquement autour de ses axes
3 de pivotement, tout mouvement vers l'avant et/ou vers l'arrière entraínant simultanément et
directement la déformation élastique de l'élément amortisseur 7. En effet, le bras étant fixé au haut
de la tige 2, toute sollicitation appliquée sur celle-ci est transmise instantanément et pratiquement
sans déperdition à l'élément amortisseur 7, ce qui réduit considérablement le temps de réponse. Le
skieur bénéfice ainsi d'un dispositif de contrôle de la flexion 5 qui est progressif et amortissant sur une
grande amplitude, insensible aux infiltrations d'eau, de neige, etc..., apte à rappeler la tige 2 en
position initiale dès que les sollicitations cessent, et très perceptible par le skieur.It follows from this construction that the
Dans le mode de réalisation présenté aux figures 3, 4, 5 et 6, la chaussure comporte un dispositif
de contrôle de la flexion 5 qui est associé à une tige 22 limitée en débattement dans le sens d'un
pivotement vers l'arrière à partir d'une position angulaire déterminée au moyen d'une butée 26-27.
Cette butée est constituée d'un rebord 26 réalisé sur la paroi de la base de coque 1, au-dessus
de la
zone de fixation de l'élément amortisseur 7, et d'un rebord complémentaire 27 réalisé sur la paroi de la
tige 2. Cette butée 26-27 bloque la tige 22 en pivotement vers l'arrière dans une position angulaire
déterminée, d'angle α, par rapport au plan de la semelle 31 de la base de coque 1. De la sorte, le
skieur peut prendre appui vers l'arrière sur la tige 22 avec son bas de jambe en étant maintenu selon
un angle d'inclinaison α, constant, appelé communément "angle d'avancée", et ce, sans solliciter
l'élément amortisseur 7 qui, dans ce cas, ne travaille au cisaillement qu'en flexion vers l'avant 28 de la
tige 22. Comme illustré à la figure 4 en particulier, on voit que la flexion selon 28 de la tige 22 par
pivotement autour de ses axes 3 provoque simultanément et dans le même sens 28 le déplacement
des points de fixation 9 et 10 du bras de transmission 6. Ce dernier étant relié à l'élément amortisseur
7 par son extrémité inférieure 12, le mouvement en pivotement selon 28 se traduit par un déplacement
longitudinal 29 de ladite extrémité 12 qui force l'élément 7 à travailler transversalement à ses zones
de fixation.In the embodiment presented in Figures 3, 4, 5 and 6, the shoe includes a
Avantageusement, la tige 22 est pourvue d'un rebord d'enveloppement 23 dans sa partie basse
postérieure 14. Ce rebord 23 recouvre avantageusement tout l'élément amortisseur 7 en laissant libre
son pourtour 15 et est muni d'une ouverture 24 au travers de laquelle passe l'extrémité libre 12 du
bras de transmission 6. La tige 22 ainsi réalisée présente une surface extérieure relativement continue
dans laquelle le dispositif de contrôle de la flexion 5 est parfaitement intégré. Pour parfaire la
continuité, une saillie transversale 25 à profil progressif est obtenue sur la base de coque 1 en vis à
vis du rebord 23 et à distance de celui-ci pour permettre l'évacuation éventuelle d'eau et/ou de neige
qui se serait infiltrée entre la tige 22 et la base de coque 1.Advantageously, the
Selon un autre mode de réalisation de la tige 22, non représenté, une butée limite l'amplitude de son
pivotement 28 vers l'avant en plus de la butée 26-27 qui intervient en pivotement vers l'arrière. Dans
ce cas de construction, ce sont les butées qui déterminent l'amplitude maximum du pivotement possible
de la tige 22. Il va de soi que cette amplitude de pivotement est avantageusement limitée à celle de la
déformation élastique acceptable par l'élément amortisseur 7. According to another embodiment of the
La description qui vient d'être faite en référence aux figures 1 à 6 montre la mise en oeuvre d'un
dispositif de contrôle de la flexion 5 dont l'élément amortisseur viscoélastique 7 est fixé sur la base de
coque 1 dans la zone du talon, et dont le bras de transmission 6 est solidarisé au haut 8 de la tige 2,
22. Il est bien entendu que ce dispositif de contrôle de la flexion 5 peut également être monté à
l'inverse, c'est-à-dire en fixant l'élément amortisseur 7 sur le haut 8 de la tige 2, 22, et le bras de
transmission 6 sur la base de coque 1 dans la zone du talon. Dans un tel cas de construction, le
dispositif de contrôle de la flexion 5 transmet toujours les sollicitations appliquées sur le haut 8 de la
tige 2, 22, directement à l'élément amortisseur 7 qui reste contraint de travailler au cisaillement du
fait de sa fixation sur l'extrémité libre du bras de transmission 6 qui est alors solidaire de la base de
coque 1.The description which has just been made with reference to FIGS. 1 to 6 shows the implementation of a
Un autre exemple de mise en oeuvre possible du dispositif de contrôle de la flexion 5 de la tige 2, 22,
par rapport à la base de coque 1 consiste à relier chacune des extrémités 11 et 12 du bras de
transmission 6 à un élément amortisseur viscoélastique 7 fixé l'un sur la tige 2, 22, l'autre sur la base
de coque 1.Another example of possible implementation of the device for controlling the bending 5 of the
Claims (8)
- Ski boot comprising a first element, such as a shell base (1) overlaid by a second element, such as an upper (2, 22) provided with a flexion control device (5) adapted to absorb the supports of the skier's lower leg over a certain pivoting amplitude of said upper (2, 22) with respect to the shell base (1), the flexion control device (5) having an elastic absorbing element (7) made of a viscoelastic material which intervenes between the upper (2, 22) and the shell base (1), characterized in that the flexion control device (5) is constituted of one transmission arm (6) and the shock absorbing element (7) made of a viscoelastic material having the shape of a very thick block with two approximately parallel surfaces (17), the transmission arm (6) extending from the top (8) of the upper (2, 22) to the shell base (1) that it connects together by means of the shock absorbing element (7) sandwiched by its surfaces (17) between one (12) at least of its ends (11, 12) and the wall of the opposing constituent element (1, 2, 22) of the boot.
- Ski boot according to claim 1, characterized in that the transmission arm (6) is affixed to the upper (2, 22), the viscoelastic shock absorbing element (7) being fixed, by one surface (17), on a binding zone (17') located on one free end (12) of the transmission arm (6), and by the opposing surface (17) on a binding zone (17') located on the wall (1') of the shell base (1), the transmission arm being affixed (9, 10) to the top (8) of the upper (2, 22) by its other end (11).
- Ski boot according to claims 1 or 2, characterized in that the periphery (15) of the shock absorbing element (7) is totally cleared to allow for the deformation of said element transversely to its binding zones (17').
- Ski boot according to claim 2, characterized in that the shock absorbing element (7) is located in a rear lower portion (14) of the upper (2, 22) in the heel zone, and the transmission arm (6), which is elongated, extends substantially parallel to the wall (1') of the shell base (1) on the dorsal zone of the upper (2, 22), one (11) of its ends being rigidly fixed to the top portion (8) of the upper (2, 22), whereas the other free end (12) is spaced from said wall (1') of the shell base (1), and connected to the latter by means of the shock absorbing element (7).
- Ski boot according to claims 1 or 2, characterized in that the amplitude of displacement of the flexion control device (5) is limited in the direction of the rearward pivoting from a predetermined angular position by means of an abutment (26, 27) interacting between the upper (2, 22) and the shell base (1).
- Ski boot according to claims 1 or 2, characterized in that the amplitude of displacement of the flexion control device (5) is limited in rearward and frontward pivoting by means of at least one abutment interacting between the upper (2, 22) and the shell base (1).
- Ski boot according to any of claims 2-4, characterized in that the transmission arm (6) has the general shape of a "T" whose upper end (11) constituted by the horizontal bar, is fixed (9, 10) on both sides of the dorsal zone of the upper (2, 22) and in its center, whereas the lower end (12), ending the vertical bar, is connected to the shock absorbing element (7).
- Ski boot according to any of claims 2-6, characterized in that an enveloping edge (23) is provided on the lower portion (14) of the upper (2, 22) and masks the shock absorbing element (7) as well as the lower end (12) of the transmission arm (6) which passes through an opening (24).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9504859A FR2733125B1 (en) | 1995-04-19 | 1995-04-19 | SHOE WITH ROD BENDING CONTROL |
| FR9504859 | 1995-04-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0738479A1 EP0738479A1 (en) | 1996-10-23 |
| EP0738479B1 true EP0738479B1 (en) | 1999-09-22 |
Family
ID=9478377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96100143A Expired - Lifetime EP0738479B1 (en) | 1995-04-19 | 1996-01-08 | Shoe with flexure control of the quarter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5819441A (en) |
| EP (1) | EP0738479B1 (en) |
| JP (1) | JPH08289801A (en) |
| AT (1) | ATE184756T1 (en) |
| DE (1) | DE69604323T2 (en) |
| FR (1) | FR2733125B1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6231066B1 (en) | 1999-03-03 | 2001-05-15 | Shimano Inc. | Active highback system for a snowboard boot |
| FR2793391B1 (en) * | 1999-05-12 | 2001-06-08 | Salomon Sa | CROSS COUNTRY SKI SHOE |
| WO2001049380A2 (en) * | 2000-01-06 | 2001-07-12 | The Burton Corporation | Highback formed of multiple materials |
| ITTV20010051A1 (en) | 2001-04-23 | 2002-10-23 | Tecnica Spa | SPORTS FOOTWEAR WITH IMPROVED FLEXIBILITY |
| US7686321B2 (en) * | 2006-12-01 | 2010-03-30 | The Burton Corporation | Highback with textile-like material for support |
| EP2572599B1 (en) * | 2011-09-26 | 2015-04-22 | Rossignol Lange S.R.L. | Shell of a ski boot with spoiler |
| EP3090641B1 (en) * | 2015-05-06 | 2021-12-01 | OBER ALP S.p.A. | Ski boot provided with an improved ski-walk selection mechanism |
| US20230024907A1 (en) * | 2021-07-21 | 2023-01-26 | Rossignol Lange S.R.L. | Lower shell for a gliding boot |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4078322A (en) * | 1976-08-04 | 1978-03-14 | Engineered Sports Products, Inc. | Ski boot |
| DE8020898U1 (en) * | 1980-08-04 | 1980-11-06 | Kastinger, Hermann, Seewalchen (Oesterreich) | Ski boot |
| FR2498061B1 (en) * | 1981-01-20 | 1985-05-31 | Articles Sport Cie Fse | SKI BOOT |
| FR2498431A1 (en) * | 1981-01-23 | 1982-07-30 | Articles Sport Cie Fse | Ski boot with front opening covered by articulated tongue - has case covering front of leg and articulated to boot at ankle level |
| DE3662963D1 (en) * | 1985-06-24 | 1989-06-01 | Lange Int Sa | Ski boot |
| EP0241840A3 (en) * | 1986-04-11 | 1989-11-29 | NORDICA S.p.A | Ski boot with device for varying the flexibility |
| FR2617381B1 (en) * | 1987-07-03 | 1990-01-05 | Salomon Sa | FOOTWEAR, ESPECIALLY ALPINE SKI WITH ARTICULATED UPPER |
| CH677174A5 (en) * | 1988-10-10 | 1991-04-30 | Lange Int Sa | |
| CH679440A5 (en) * | 1988-11-21 | 1992-02-28 | Raichle Sportschuh Ag | |
| CH678258A5 (en) * | 1989-01-18 | 1991-08-30 | Lange Int Sa | |
| FR2672189B1 (en) * | 1991-02-01 | 1993-06-11 | Salomon Sa | SKI BOOT WITH REAR HOOD ARTICULATED ON THE HULL ARM. |
| FR2674106A1 (en) * | 1991-03-21 | 1992-09-25 | Salomon Sa | ALPINE SKI BOOT WITH ENERGY CALIPER ARTICULATED ON THE REAR HOOD. |
| EP0689777B1 (en) * | 1994-07-01 | 1998-07-29 | Lange International S.A. | Ski boot |
-
1995
- 1995-04-19 FR FR9504859A patent/FR2733125B1/en not_active Expired - Fee Related
-
1996
- 1996-01-08 EP EP96100143A patent/EP0738479B1/en not_active Expired - Lifetime
- 1996-01-08 AT AT96100143T patent/ATE184756T1/en not_active IP Right Cessation
- 1996-01-08 DE DE69604323T patent/DE69604323T2/en not_active Expired - Fee Related
- 1996-04-01 US US08/625,863 patent/US5819441A/en not_active Expired - Fee Related
- 1996-04-16 JP JP8094089A patent/JPH08289801A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE69604323T2 (en) | 2000-02-10 |
| ATE184756T1 (en) | 1999-10-15 |
| JPH08289801A (en) | 1996-11-05 |
| EP0738479A1 (en) | 1996-10-23 |
| US5819441A (en) | 1998-10-13 |
| FR2733125B1 (en) | 1997-07-04 |
| DE69604323D1 (en) | 1999-10-28 |
| FR2733125A1 (en) | 1996-10-25 |
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