WO1994002220A1 - Dispositif interface destine a modifier la repartition naturelle de pression d'un ski sur sa surface de glisse - Google Patents
Dispositif interface destine a modifier la repartition naturelle de pression d'un ski sur sa surface de glisse Download PDFInfo
- Publication number
- WO1994002220A1 WO1994002220A1 PCT/FR1993/000649 FR9300649W WO9402220A1 WO 1994002220 A1 WO1994002220 A1 WO 1994002220A1 FR 9300649 W FR9300649 W FR 9300649W WO 9402220 A1 WO9402220 A1 WO 9402220A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ski
- rocker
- movable
- stop
- support
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C5/00—Skis or snowboards
- A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
- A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
-
- 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 boot and a ski, in particular an alpine ski, aiming to modify the natural distribution of pressure of the ski on its sliding surface.
- the invention relates to an interface device whose modification action on the natural pressure distribution of the ski on the snow can be adjusted.
- a boot is retained on a ski by a front binding element and a rear binding element.
- Skiing has a certain flexibility, which is mainly due to its internal structure.
- the bending of the ski can be influenced by the reaction that the binding elements exert on the ski.
- the flexion of the ski can also be influenced by a stiffener of the static type, or by means which act on the ski dynamically.
- a static type stiffener is for example described in the German utility model application n ° 90 17 486.
- the static type stiffener is constituted by a stiffening plate, the end of which rear is secured to the ski at the level of the rear binding element.
- the front end of the plate can slide in a longitudinal direction.
- a stop integral with the ski is placed opposite the front end of the plate so that the plate opposes the flexing of the ski.
- the stop has three different positions which can be adjusted, a position where it leaves the front end of the plate free to slide over a determined amplitude, a position where it exerts an action on the front end of the plate. shock absorbing, and a position where it bears directly against the front end of the plate, and prevents any movement of the latter towards the front.
- This device gives good results, but it reacts to flexing of the ski, and does not take account of the dynamic stresses which pass between the skier's shoe and the ski.
- the adjustment means with which this device is equipped have limited effectiveness.
- Devices of the dynamic type are also known, that is to say devices which are capable of transforming during the gliding at least part of the stresses of the boot towards the ski in a bending moment which tends to make dive at least one end of the ski towards the snow.
- Such a device is described in unpublished patent applications No. 91 10895, No. 91 15612, and No. 9204964 in the name of the applicant.
- These devices have a feeler member which is movable in a vertical direction, and which is capable of picking up the stresses which one end of the boot exerts in the direction of the ski during the practice of gliding. It also comprises connecting means for transforming these stresses into a force oriented in the plane of the longitudinal direction defined by the ski. A transmission member transmits this force to at least one of the bases of the fastening elements where it generates a bending moment which tends to plunge the end of the ski towards the snow.
- the elastically compressible means consist of calibrated springs. When these springs are subjected to a compression stress lower than their calibration value, these stresses are transmitted directly to the base of the front fixing element. When these stresses exceed the setting value, then they cause the compression of the springs. This device prevents the base of the front binding element from being subjected to excessive stresses, in particular during strong bending of the ski.
- One of the aims of the present invention is to remedy these drawbacks, and to propose an interface device equipped with simple adjustment means, which make it possible to adjust the effect of the interface device on the bending of the ski.
- Another object of the invention is to propose a device whose adjustment means allow, at will, to amplify or reduce the compression amplitude of the compressible means compared to the amplitude of the relative movement of the transmission member by compared to skiing.
- the device according to the invention aims to modify the pressure distribution of a ski such as in particular an alpine ski on its sliding surface, said ski being equipped in its skid area with fastening elements intended to retain a shoe , the fastening elements resting respectively on a base.
- the device comprises a transmission member which extends above the upper surface of the ski, in the area of the skate, one end of which is connected to a base secured to the ski, the other end of which is movable relative to the surface upper part of the ski during flexion movements of the ski. It also comprises an elastically compressible element opposing the movement of the movable end of the transmission member.
- It is characterized by the fact that it also comprises intermediate means between the free end of the member and the compressible element for modifying the ratio of amplitudes between the relative movement of the end of the transmission member by compared to the ski and the compression stroke of the compressible element.
- Figure 1 schematically illustrates, in side view, a ski, in its skate area, equipped with an interface device according to a first embodiment of the invention.
- Figure 2 is a side view, in partial section, of the device of Figure 1, at the front fixing element.
- FIG. 3 is a top view, in partial section, of the device shown in FIG. 2.
- FIG. 4 is a perspective view of the transmission plate which equips the device of FIGS. 1 and 2.
- Figure 5 is a perspective view of the transverse rocker.
- Figure 6 shows an alternative embodiment of this rocker.
- Figure 7 is similar to that of Figure 3, and illustrates the operation of the device.
- Figure 8 is a side view in partial section of the interface device of Figure 1 according to an alternative embodiment.
- FIG. 9 is a top view, in partial section, of the device shown in FIG. 8.
- FIGS 10 and 11 illustrate an alternative embodiment.
- Figures 12 to 15 are partial sectional views of the front part of an interface device according to another variant.
- FIG. 16 is a side view of a ski in its area of the skate of an interface device according to a second embodiment of the present invention.
- FIG. 1 shows the area of the skate of a ski 1, on which a boot 2 is retained, between a front binding element 3 and a rear binding element 4.
- the front and rear binding elements are of all appropriate type.
- the front binding element 3 has a retaining member 5a carried by a body 5, and a base plate 6 which rests on a base 25, and by which the binding element is assembled to the ski .
- the base plate 6 is extended towards the rear by a support plate 7 on which the front end of the shoe sole rests.
- the rear fixing element 4 has a retaining member 8, carried by a body 9.
- the body 9 is movable along a base plate 10, and the base plate 10 extends towards the front by a support plate 11 on which the rear end of the shoe sole rests.
- the interface device comprises a feeler member which is capable of sensing the stresses of the boot or of a part of the boot in the direction of the ski and conversely the stresses of the ski in the direction of the boot.
- the feeler member is constituted by the rear support plate 11, on which rests the rear end of the shoe sole.
- the base plate 10 of the binding element which comprises the rear support plate 11 is articulated in rotation, in its rear part, around an axis 13 which is carried by a base 14 secured to the upper surface of the ski .
- the base plate 10, and the support plate 11 which plays the role of feeler are movable around the axis 13, and have an approximately vertical movement.
- any other means could be suitable for guiding the probe 11 in its movement.
- means may be provided to limit the movement of the base plate 10 upwards.
- the interface device also comprises connecting means which transform the stresses of the shoe picked up by the probe 11 into a force oriented approximately longitudinally.
- the connecting means are shown in the form of a rocker 16 with two branches, one 17 approximately vertical, and the other 18 approximately horizontal and oriented towards the rear.
- the rocker 16 is articulated around an axis transverse 19, located in the upper part of its vertical branch 17, and carried by the base 14.
- the base plate 10 is also supported against the horizontal branch 18 of the rocker.
- a transmission member 21 is articulated to the rocker 16 around an axis 23 located at the junction of the two branches 17 and 18, approximately under the axis 19.
- the transmission member extends in the direction of the fixing element before 3.
- the transmission member is slightly inclined from back to front and from bottom to top. It is able to withstand a compression stress, and therefore to transmit to the fixing element 3 a force transmitted by the rocker 16.
- the force P has a horizontal component and a vertical component.
- connection means and the transmission member which have just been described are not limiting for the invention, and any other means could be suitable.
- the connecting means which transform the stresses of the boot both into a force oriented towards the front, and a force oriented towards the rear of the ski.
- the transmission member 21 is connected, in its front part, to bending means which transform the longitudinal force P into a bending moment which tends to cause the front end of the ski to plunge in the direction of its sliding surface.
- the front binding element 3 is assembled to the ski by means of a base 25, which extends approximately under the base plate 6 of the binding element.
- the base 25 has a rear portion 26 which is raised relative to the upper surface of the ski, and to which the connecting member 21 is connected, for example by means of a transverse hinge pin 27
- the rear part 26 of the base 25 is located behind the support plate 7 of the front fixing element 3.
- the transmission member 21 transmits the force P with its vertical component to the base 25, in an area which is raised relative to the upper surface of the ski.
- the base then generates a bending moment on the ski which tends to cause the front end of the ski to plunge in the direction of the sliding surface, which tends to improve the handling of the ski on snow.
- the base 25 comprises a fixed element 30, which extends at least partially under the base plate 6 of the front binding element 3, which is assembled to the ski by any suitable means, for example by screws.
- the base plate 6 of the fixing element is assembled to the fixed element 30 by any suitable means, for example by screws. These screws can completely pass through the fixed element 30 to assemble it on the ski, or else the base plate and the fixed element can be assembled by separate screws.
- the fixed element 30 has, seen from above, a U-shape open towards the rear, which defines, in its central part, a recess 32.
- the base 25 also comprises a mobile transmission plate 31 which can move freely in a longitudinal direction relative to the fixed element 30.
- the mobile transmission plate 31 is fitted inside the recess 32 of the fixed element 30, and it is guided on the walls of the recess so as to have only one possible movement in a longitudinal direction.
- the transmission member 21 is linked to the mobile transmission plate 31 by the hinge pin 27 previously described, which is located in the rear part 26 of the base 25.
- the base 25 also has an elastically compressible element which opposes the forward movement of the transmission plate 31 relative to the fixed element 30.
- this element consists by a battery of two springs 35 and 36, oriented in a direction parallel to the longitudinal axis defined by the ski.
- the transmission plate 31 has in its central region a longitudinal recess 38. It is in this recess 38 that the two springs 35 and 36 are housed.
- the springs 35 and 36 are supported, in their rear part, against a stop 40 which is integral with the transmission plate 31 for all of its longitudinal movements.
- the stop 40 is pivotally mounted about a vertical axis 41.
- the springs 35 and 36 are supported at their front end against a support stop 42.
- the support stop 42 constitutes one of the support zones of a rocker 43 which is located in the front part of the recess 32.
- the rocker 43 extends in a transverse direction.
- the rocker 43 is articulated around a vertical axis 44 which is integrally connected to the transmission plate 31.
- the axis 44 is located on one of the edges of the rocker 43, and it constitutes a second support area of this rocker.
- the rocker 43 is also pressing forward against a stop 46 which constitutes a third support zone.
- the rocker 43 has a front wall 43a against which the stop 46 is supported.
- the rocker On the rear, the rocker has a horizontal rib with a notch 43b for the support stop 42.
- FIG. 6 shows a rocker with three notches 43c, d, e for three possible positions of the front stop 42.
- the springs exert between the elements 30 and 31 a variable restoring force.
- the rocker 43 is in equilibrium on these three support zones constituted by the support stop 42, the axis 44, and the front stop 46.
- the rocker 43 is retained forwards by a support shoulder 48, which is integral with the transmission plate 31.
- This support shoulder 48 constitutes an area against which the rocker 43 abuts under the action of the springs 35 and 36. It limits movement towards the before the rocker 43, which keeps the springs 35 and 36 under prestressing, at rest.
- the rocker can pivot backwards around its axis 44, inside the front part of the recess 38, against the restoring force of the springs 35 and 36.
- At least one of the support zones on which the rocker 43 rests is adjustable, which makes it possible to vary the ratio of the lever arms between these different zones.
- it is the front stop 46 which is movable in a transverse direction.
- the stop 46 is carried by a transverse endless screw 50, which passes through the fixed element right through.
- the screw 50 can be actuated in rotation from the outside by the screw head 51. The rotation of the screw causes the front stop to move in a transverse direction.
- the operation of the device is as follows.
- the springs 35 and 36 are placed in the recess 38 with a taring preload which urges the rocker 31 against the support shoulder 48 with a determined thrust force.
- the stress threshold beyond which the springs compress, is variable.
- This threshold can be lower, equal or greater than the natural preload of the springs. Likewise, beyond this threshold, the springs can be compressed by an amplitude less than, equal to or greater than the displacement stroke of the movable element 31 relative to the fixed element 30.
- the position of the front stop 42 determines the ratio of the lever arms on which the balance of the rocker rests.
- the device functions in a way like a safety valve. In addition, it limits the action of the transmission member on the ski by absorbing the excessive stresses which could occur during strong fiexions of the ski.
- the position adjustment of the front stop 42 on the rocker 43 makes it possible to adjust the stress threshold beyond which the valve becomes active.
- the adjustment is made very simply by the screw 50.
- the choice of position for the support stop 42 also influences the threshold for entry into action of the springs.
- the recess 38 in which the springs are housed is slightly flared on the side of the axis 41, and, as described above, the rear stop 40 against which the springs 35 and 36, is pivotally mounted about a vertical axis 41. In this way, the springs accompany the rotation of the rocker 43.
- the stop 46 is in abutment, towards the front, against a wall 55 which delimits towards the front the recess 32 of the fixed element 30.
- FIGS 6 and 7 illustrate an alternative embodiment, according to which the support zone formed by the front stop, that is to say the stop 46 in the case of Figure 3, is movable discontinuously.
- the front support 46 is replaced by two supports 56 and 57, which are located on either side of the support stop 42.
- the front stop 56 which is located on the side opposite the axis 44 , relative to the support stop 42 is fixed, and in the example illustrated, it is integral with the fixed element 30.
- the front stop 57 which is located on the same side as the axis 44 is movable, according a longitudinal direction, and its movement is controlled by a control button 60 in two positions.
- the control button 60 is located in the front part of the fixed element 30, and it is movable in rotation about a transverse axis 61.
- the button 60 acts on an element 62, which is guided for a longitudinal translational movement in a housing 63 of the fixed element 30.
- the front stop 57 is located at the rear end of this element 62.
- the action of the button 60 on the element 62 takes place via a transverse pin 64, which acts against a ramp 65 of the element 62.
- the pin 64 hinders any movement of the element 62 towards the front, and maintains the front stop 57 in support against the rocker 43. This position of the pin 64 is shown diagrammatically in FIG. 8 by the cross 64 '.
- the translational movements of the transmission plate 31 cause the rocker 43 to rotate about its axis 41, by pressing on the front rocker 57.
- the adjustment device therefore has two positions, which define two stress thresholds beyond which the springs 35 and 36 come into action, and two levels of elastic return of the springs.
- Figures 10 and 11 illustrate an alternative embodiment, according to which the movement of the movable front stop 57 is controlled by an operating lever 70 accessible in front of the front fixing element.
- the lever 70 is articulated around an axis 71, and it is connected to the element 62 by a link 72.
- the set works like a knee pad.
- a spring 73 recalls the movable stop 57 set back relative to the fixed front stop 56.
- the rocker 43 then bears on this stop 56.
- the spring 23 also makes it possible to close the toggle even if a slight play exists between the movable stop 57 and the rocker 43.
- Figures 12 to 15 illustrate an alternative embodiment according to which the movement of the movable front stop 57 is controlled by control button 80 with automatic return to the center.
- the movable element 82 which carries the movable front stop 57 is guided in a housing of the fixed element 30, for a longitudinal translational movement.
- the displacement of the movable element 82 is controlled by a rotary cam 83 with two positions which is located in front of the element 82.
- FIG. 12 shows the cam in a first locking position of the element 82. In this position, the element 82 cannot move, and the rocker 43 is supported on the front stop 57 during the movements of the plate transmission 31.
- the element 82 is released for a longitudinal translational movement.
- the rocker 43 then rests on the fixed front stop 56.
- the element 82 and the movable stop 57 accompany the movements of the rocker 43, under the return action exerted by a small spring 85.
- a ball device 86 cooperates with notches of the cam to mark with a hard point the two positions of the cam 83.
- the pivoting of the cam is controlled by a button 80 movable transversely, and returned to the central position by a pin spring 89.
- FIG. 14 shows diagrammatically at 80a and 80b the positions that the button 80 can take on either side of its position of stable equilibrium.
- the button 80 carries a vertical pin 90 whose lower end circulates in the opening 91 of an ear 92 in an arc of a circle, which is integral with the cam 83.
- FIG. 14 shows diagrammatically at 90a, 90b, the two extreme positions of the pin 90, corresponding respectively to the positions 80a, 80b, of the button.
- the dimensions of the opening 91 are determined so that the movement of the button 80, on one side or the other from its centered position, causes the pin 90 to tilt the cam 83 from one position to the other .
- the button 80 After its movement, the button 80 is returned to the centered position by the spring 89.
- the pin 90 has an action on the cam 83 only if the cam 83 is not already in the position towards which the movement of the button 80 drives it. Otherwise, the movement 80 is done "in a vacuum", that is to say that it has no effect on the cam.
- FIG. 16 illustrates a second embodiment of the invention, according to which the transmission plate 131 and the transmission member 130 constitute one and the same element.
- the transmission member 130 is also secured to the ski under the rear fastening element 4, at its base 10.
- the transmission plate 131 and the transmission member 130 then behave like a stiffener of the static type.
- the front base 125 is similar to the base 25 previously described.
- the springs 35 and 36 could be replaced by any other compressible element having elastic return and / or damping properties.
- This element could in particular be a hydraulic shock absorber, or a block of material of the viscoelastic type.
- the compressible element could be arranged in the form of interchangeable energy cartridges of different stiffness.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93913198A EP0684861A1 (fr) | 1992-07-17 | 1993-06-29 | Dispositif interface destine a modifier la repartition naturelle de pression d'un ski sur sa surface de glisse |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR929209008A FR2693659B1 (fr) | 1992-07-17 | 1992-07-17 | Dispositif interface destiné à modifier à la répartition naturelle de pression d'un ski sur sa surface de glisse. |
FR92/09008 | 1992-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994002220A1 true WO1994002220A1 (fr) | 1994-02-03 |
Family
ID=9432113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1993/000649 WO1994002220A1 (fr) | 1992-07-17 | 1993-06-29 | Dispositif interface destine a modifier la repartition naturelle de pression d'un ski sur sa surface de glisse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0684861A1 (fr) |
FR (1) | FR2693659B1 (fr) |
WO (1) | WO1994002220A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2721526B1 (fr) * | 1994-06-22 | 1996-08-23 | Rossignol Sa | Planche de glisse pourvue d'une plaque de surélévation des fixations de la chaussure. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2654636A1 (en) * | 1989-11-22 | 1991-05-24 | Salomon Sa | Multipurpose device for mounting a boot on a ski |
DE9017486U1 (de) * | 1990-12-27 | 1992-01-30 | Marker Deutschland GmbH, 8116 Eschenlohe | Tragplatte für eine Sicherheitsskibindung |
-
1992
- 1992-07-17 FR FR929209008A patent/FR2693659B1/fr not_active Expired - Fee Related
-
1993
- 1993-06-29 EP EP93913198A patent/EP0684861A1/fr not_active Ceased
- 1993-06-29 WO PCT/FR1993/000649 patent/WO1994002220A1/fr not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2654636A1 (en) * | 1989-11-22 | 1991-05-24 | Salomon Sa | Multipurpose device for mounting a boot on a ski |
DE9017486U1 (de) * | 1990-12-27 | 1992-01-30 | Marker Deutschland GmbH, 8116 Eschenlohe | Tragplatte für eine Sicherheitsskibindung |
Also Published As
Publication number | Publication date |
---|---|
EP0684861A1 (fr) | 1995-12-06 |
FR2693659A1 (fr) | 1994-01-21 |
FR2693659B1 (fr) | 1994-09-16 |
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