EP0872264B1 - Dispositif d'interface entre une plate-forme de support de chaussure de ski et un ski - Google Patents
Dispositif d'interface entre une plate-forme de support de chaussure de ski et un ski Download PDFInfo
- Publication number
- EP0872264B1 EP0872264B1 EP98106462A EP98106462A EP0872264B1 EP 0872264 B1 EP0872264 B1 EP 0872264B1 EP 98106462 A EP98106462 A EP 98106462A EP 98106462 A EP98106462 A EP 98106462A EP 0872264 B1 EP0872264 B1 EP 0872264B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ski
- platform
- support
- skis
- lower plate
- 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
Links
- 239000013013 elastic material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
Definitions
- the invention relates to an interface device between a shoe and a ski. It also relates to a ski having such an interface device, as well as a set of retaining elements of a boot on the ski and a ski equipped with such an assembly.
- a ski is a flexible, elongated beam on which a boot is releasably retained on a ski by two retaining elements.
- the ski has two elongated edges laterally which are intended to ensure the grip of the ski on snow, and which contribute to driving qualities of the ski, especially when cornering.
- the ski During the glide, the ski is subjected to constraints coming from the weight of the skier, his driving impulses and the reaction of the terrain on which the ski evolves. When cornering, these constraints are accentuated by acceleration due to the curvature of the trajectory. Depending on these different parameters, the ski flexes given its own bending parameters which have been determined to construction.
- This device makes it easier to control the pivoting of the ski. However, it has little or no effect on the theoretical trajectory of skiing on snow, in particular on the radius of curvature of the trajectory of the ski when cornering in pipe cut. Overall, the radius of curvature of the ski trajectory is determined by the curvature of the projection of the ski edge on which the ski rests on the sliding surface.
- this radius of curvature of trajectory depends mainly the general curvature of the ski s dimension line, and the distribution of flexibility over the length of the ski. It should be emphasized here that the margin maneuver on these parameters is still relatively limited if we wishes to maintain good general skiing behavior in other situations.
- the trajectory radius of curvature also depends on the lateral stiffness of the ski, and the angle of the ski in relation to the snow.
- US Patent 5,558,354 discloses a gliding device comprising two platforms shoe support mounted on two skis. Each of the platforms is coupled to both skis by a deformable structure with articulated links. When cornering, structures ensure a synchronized inclination of the skis which support the platforms, and the skis rest on the snow like a traditional pair of skis. he This results in a better ability of the machine to turn and to be controlled by the skier.
- Such a construction provides an original solution to a gliding device of the type snowboard, monoski or snowboard where the two skier's boots are assembled on the same board. Indeed, instead of standing on a side edge when cornering, the machine rests on the edges of the two skis.
- Such a mode of support is entirely common in traditional alpine skiing where on top of that both skis are independent, where the skier can control his support on each of the skis.
- the invention aims to improve the control of the ski of a pair of alpine skis, in particular to allow the skier to cut the turns according to a shorter natural radius as needed.
- the skier can act himself on the radius of curvature of its turn trajectory, according to a range of radii more extended towards the small rays.
- the interface device between a support platform of a ski boot and a ski is characterized in that it comprises at least one support for connection with an upper plate, a lower plate, the plates having a width neighboring and being connected together by two rods or ribs inclined in the same direction and not parallel, so as to form in cross section a structure in deformable quadrilateral of which at least two sides are not parallel.
- the skier's shoe prints a given inclination to the ski plate, and the connection between the plate and the base makes the base and the ski take an additional tilt to the snow.
- the contact line of the skis presents a decrease in the radius of curvature.
- the skier's tibial axis is less inclined compared to a traditional ski.
- the skier who controls this additional inclination by its support on the ski.
- the ski itself in flexing, controls this additional inclination of the plate.
- FIGS 1 and 2 schematically illustrate the effect produced by the the invention.
- Figure 3 shows a first embodiment of the invention.
- FIG. 4 illustrates the operation of the device of FIG. 3.
- FIG. 5 is an exploded perspective view of the device of FIG. 3.
- Figure 6 shows a complete device assembled to the middle part of a ski.
- FIG. 7 is a top view of the device in FIG. 6.
- Figure 8 relates to an alternative embodiment of a support.
- FIGS 9 and 10 illustrate the operation of the device of Figure 8.
- FIG. 11 illustrates another embodiment of the invention.
- FIGS 1 and 2 schematically illustrate the general principle of the invention.
- Figure 1 shows in section the middle part of a ski 1 which is surmounted by a platform 2.
- Platform 2 supports the shoe (not shown in the figure). It is suspended above the ski by a link with the ski which will be described in detail later.
- the ski has in known manner a lower sliding surface 3 bordered by two lateral edges 4 and 5, and an upper surface 6.
- the lateral sides of the ski and the edges 4 and 5 have, along the length of the ski, a curved shape with a nominal radius of curvature which is of the order of 20 to 40 meters, this figure only having an indicative value.
- FIG. 1 represents the ski moving flat on a sliding surface such that snow.
- the lower surface 3 the two lateral edges 4 and 5 rest on the snow.
- the platform 2 which supports the shoe is subject to a vertical force F shown diagrammatically by the arrow 8, and the platform is substantially parallel to the upper surface 6 of the ski and it is centered laterally by compared to skiing.
- a ski has this configuration in a straight line for example.
- FIG. 2 represents the same ski inclined relative to its surface devolution.
- a ski has this configuration, especially when cornering.
- this is the ski outside the turn, that is to say the one on which the skier places most of his support.
- edge 5 is the internal edge of the turn.
- the skier prints an inclination to the ski by tilting his shoes, which has the effect of tilting the platform 2 at an equal angle.
- support F 'of the skier on his ski is shown schematically in the figure by the arrow 9. This support F' is greater than F, in relation to the acceleration due to the curvature of the trajectory and the fact that the skier relies more on outdoor skiing.
- the link which connects the platform to the ski captures the variation of support and reacts to this variation of support by forcing the ski to take an incline additional.
- the ski tilts more than the platform by in relation to the skier's tibial axis. If necessary we also capture the meaning inclination of the ski to differentiate the action of the link depending on whether the ski is in internal or external position at the turn.
- FIG. 2 represents the ski 1 with an inclination relative to the snow which is greater than the inclination of platform 2, hence an increase the edge grip angle of the ski.
- the additional slope of the ski induces an additional deflection of the ski which has the secondary effect of reducing the instantaneous radius of curvature of the edge in contact with snow, i.e. to decrease the radius of curvature of the edge trajectory on snow.
- the angular offset between the ski and the platform brings it closer to the internal edge 5 the direction in which the skier's support is applied in the direction of the inner square.
- FIG. 3 represents a first embodiment of a connection.
- This link includes a link support 10 placed between a platform 2 and a ski 1.
- the support 10 comprises an upper plate 12 which supports the platform, and a lower plate 13 which is fixed to the upper surface of the ski.
- the turntables each have a width which is close to the width of the ski.
- the plates 12 and 13 are connected by a set of two links 15 and 16, the connections being made around axes of articulation parallel to the direction longitudinal defined by the ski. Any other suitable mode of connection could also suit.
- the two rods are inclined in the same direction relative to the vertical. In addition, they have a different length.
- the two links 15 and 16 are inclined from bottom to top and from the outside to the inside of the turn.
- the link 16 located on the internal side of the turn is shorter and more inclined by compared to a horizontal plane than the other link 15.
- This link 16 is the link drive to which a large part of the support efforts of the skier refers.
- the other ski has a symmetrical arrangement.
- a prestressed elastic return means such as an elastically block 18 deformable, or a spring, or the like, is interposed between the two plates.
- This block 18 recalls the plate towards its high rest position, where it bears against a stop 20 located on the side of the link 15.
- the two plates and the two rods together form a deformable quadrilateral structure against the return force of the pre-stressed block 18. At least two sides of the quadrilateral are not parallel. These sides are actually formed by the rods.
- block 18 The stiffness of block 18 is chosen so that the block compresses and the plate upper collapses under the support of the skier when the ski is in a corner, in the position outside the corner. Block 18 brings back the stage higher in stop in other circumstances.
- the collapsed position of the upper plate is shown in the figure 4.
- the two rods 15 and 16 forced the upper plate to move relative to the plate lower according to a rocking movement which brings the lower plate and therefore the ski to take with respect to the snow a slope greater than that of the upper plate.
- the plate upper 2 is offset on the side of the edge 5 internal to the turn.
- Figure 5 shows in exploded perspective the connection support 10. There recognizes the different parts described, the plates 12, 13, the links 15, 16, and the connecting axes 22, 23, 24, 25 of the links to the plates.
- Figures 6 and 7 show a complete interface device assembled on the middle part of a ski.
- the device shown comprises a platform 2 with a zone of front mounting 30 where a front retainer 31 is assembled, and a zone rear mounting 32 with a rear retainer 33. So advantageous, as the retaining elements are assembled on the same platform independent of the ski, the forces due to the pinching of the boot pass through by the platform and not by the ski.
- the platform is connected to the ski by four connecting supports 10a, 10b, 10c, 10d which are similar to the support 10 previously described.
- one support has a longitudinal clearance limited to the operating clearance.
- This support is by example the support 10c placed at the rear support of the shoe.
- the other supports have ample longitudinal play.
- This game is planned for example at the connection between the rods and the upper plates.
- the pre-stressed blocks which equip the various connection supports can have the same stiffness or not.
- Figure 8 shows an alternative embodiment of a connecting support.
- the support 35 which is represented is similar to the support 10 previous, with in particular the upper 36 and lower 37 plates connected by links.
- a balance cam 38 is further suspended from an axis 39 carried by the upper plate.
- Cam 38 is located on the side of the longest link and the more inclined, that is to say towards the outside of the skis.
- the support cam is designed to retract when the ski is in position external to the turn. This operating mode is illustrated in Figure 9.
- the cam is retracted by gravity, taking into account the angle of inclination of the outside ski which is greater than the equilibrium angle induced by the centrifugal force.
- part of the mass of the cam is deported. The support then works in the same way as what has been described previously.
- FIG. 10 shows the same ski in the internal ski position at the turn. Drug 38 then opposes the relative movement of the plates. Under these conditions, the device is not active for internal skiing when cornering.
- FIG. 11 shows a device similar to that of Figures 6 and 7.
- the device comprises in particular a platform 54 connected to the ski by four connecting supports 55a, 55b, 55c, 55d.
- Under the plate, deported laterally on the side of the longest and most inclined link are two cleats 57 and 58.
- Two levers 59 and 60 are supported on the cleats, so to be able to exert on them a pulling force downwards.
- the levers are articulated at 61, 62 with respect to a base assembled integrally with the ski, and they are interconnected by an incompressible bar 63.
- the upper and lower plates could be integrated to the platform or to the ski, respectively.
- the articulated links could be replaced by connecting ribs formed in one piece with the turntables.
- the joints would in this case be replaced by areas of flexing of the ribs.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Developing Agents For Electrophotography (AREA)
- Golf Clubs (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
Claims (11)
- Dispositif interface destiné à être situé entre une plate-forme de support d'une chaussure de ski et un seul ski d'une paire de skis le ski définissant une direction longitudinale, caractérisé par le fait qu'il comprend au moins un support de liaison (10) avec une platine supérieure (12), une platine inférieure (13), les platines ayant une largeur voisine et étant reliées entre elles par deux biellettes (15, 16) ou nervures inclinées dans un même sens et non parallèles, de façon à former en coupe transversale une structure en quadrilatère déformable dont au moins deux côtés ne sont pas parallèles.
- Dispositif selon la revendication 1, caractérisé par le fait qu'un bloc de matériau élastiquement déformable précontraint (18) est placé entre les deux platines.
- Dispositif selon la revendication 2, caractérisé par le fait qu'il comprend une butée (20) solidaire de la platine inférieure (13) contre laquelle l'élément précontraint rappelle la platine supérieure (12) dan une position de repos où elle est parallèle à la platine inférieure (13).
- Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé par le fait que l'une des biellettes (16) dite biellette motrice est inclinée au repos d'environ 60 degrés par rapport à la surface définie par la platine inférieure.
- Dispositif selon la revendication 4, caractérisé par le fait que l'autre biellette présente au repos une inclinaison comprise entre 30 et 50 degrés.
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'il présente une came à balancier (38) suspendue à un axe porté par la platine supérieure (12).
- Ensemble de retenue d'une chaussure sur un seul ski d'une paire de skis, l'ensemble comprenant une plate-forme (2) prévue pour supporter la chaussure, caractérisé par le fait qu'il comprend un dispositif interface selon l'une quelconque des revendications précédentes.
- Ensemble selon la revendication 7, caractérisé par le fait que la plate-forme repose sur au moins un support (10a, 10b, 10c, 10d).
- Ensemble selon la revendication 8, caractérisé par le fait qu'il présente quatre supports (10a, 10b, 10c, 10d) répartis le long de la plate-forme.
- Ensemble selon la revendication 8, caractérisé par le fait que la plate-forme (54) présente à sa face inférieure deux taquets (57, 58) en prise avec deux basculeurs (59, 60) reliés entre eux par un barreau incompressible (63).
- Ski d'une paire de skis pour la pratique du ski alpin, caractérisé par le fait qu'il comprend un dispositif interface selon l'une quelconque des revendications 1 à 7.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9704861 | 1997-04-16 | ||
FR9704861A FR2762222B1 (fr) | 1997-04-16 | 1997-04-16 | Dispoisitif d'interface entre une chaussure et une planche de glisse, notamment un ski |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0872264A1 EP0872264A1 (fr) | 1998-10-21 |
EP0872264B1 true EP0872264B1 (fr) | 2002-02-06 |
Family
ID=9506107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98106462A Expired - Lifetime EP0872264B1 (fr) | 1997-04-16 | 1998-04-08 | Dispositif d'interface entre une plate-forme de support de chaussure de ski et un ski |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0872264B1 (fr) |
AT (1) | ATE212872T1 (fr) |
DE (1) | DE69803714T2 (fr) |
FR (1) | FR2762222B1 (fr) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH489251A (de) * | 1969-08-06 | 1970-04-30 | Zander Hubert | Vorrichtung zum Verstellen einer Skibindung |
DE2255406A1 (de) * | 1972-11-11 | 1974-05-16 | Wolf Dieter Hellmann | Vorrichtung zur zuordnung der fussaufstellflaeche zu skiern |
FR2711321B1 (fr) | 1993-10-20 | 1995-12-08 | Salomon Sa | Ski muni d'un dispositif destiné à diminuer la pression des extrémités du ski sur la neige suivant l'appui du skieur sur le ski. |
US5558354A (en) * | 1995-02-23 | 1996-09-24 | Lion; Ronald K. | Combination skis and mounting plate assembly |
-
1997
- 1997-04-16 FR FR9704861A patent/FR2762222B1/fr not_active Expired - Lifetime
-
1998
- 1998-04-08 AT AT98106462T patent/ATE212872T1/de not_active IP Right Cessation
- 1998-04-08 DE DE69803714T patent/DE69803714T2/de not_active Expired - Fee Related
- 1998-04-08 EP EP98106462A patent/EP0872264B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69803714D1 (de) | 2002-03-21 |
EP0872264A1 (fr) | 1998-10-21 |
FR2762222B1 (fr) | 1999-06-04 |
DE69803714T2 (de) | 2002-08-14 |
ATE212872T1 (de) | 2002-02-15 |
FR2762222A1 (fr) | 1998-10-23 |
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