EP0829278B1 - Toe piece binding for a safety sliding board - Google Patents

Toe piece binding for a safety sliding board Download PDF

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Publication number
EP0829278B1
EP0829278B1 EP97112890A EP97112890A EP0829278B1 EP 0829278 B1 EP0829278 B1 EP 0829278B1 EP 97112890 A EP97112890 A EP 97112890A EP 97112890 A EP97112890 A EP 97112890A EP 0829278 B1 EP0829278 B1 EP 0829278B1
Authority
EP
European Patent Office
Prior art keywords
wing
spring
wings
elements
jaw
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
Application number
EP97112890A
Other languages
German (de)
French (fr)
Other versions
EP0829278A1 (en
Inventor
Alain Bejean
Jean-François Merino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Salomon SAS
Original Assignee
Salomon SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Salomon SAS filed Critical Salomon SAS
Publication of EP0829278A1 publication Critical patent/EP0829278A1/en
Application granted granted Critical
Publication of EP0829278B1 publication Critical patent/EP0829278B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C7/00—Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
    • A63C7/10—Hinged stoppage blades attachable to the skis in such manner that these blades can be moved out of the operative position
    • A63C7/1006—Ski-stoppers
    • A63C7/1013—Ski-stoppers actuated by the boot
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/0036—Footwear characterised by the shape or the use characterised by a special shape or design
    • A43B3/0094—Footwear characterised by the shape or the use characterised by a special shape or design with means to differentiate between right and left shoe
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/003—Non-swivel sole plate fixed on the ski
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08507—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws
    • A63C9/08521—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws pivoting about a vertical axis, e.g. side release
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557—Details of the release mechanism
    • A63C9/08571—Details of the release mechanism using axis and lever
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0841—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw
    • A63C9/0842—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw the jaw pivoting on the body or base about a transverse axis

Definitions

  • the invention relates to a retaining element for the front of a shoe on a gliding board. Secondly, the invention relates to a set front elements intended to retain the two shoes of a skier on one or boards for sliding.
  • a retaining element has a body, a jaw of restraint carried by the body. Under the action of the efforts of the shoe, the jaw is movable laterally on either side from a position centered against the force of reminder of a spring housed in the body.
  • the invention relates more particularly to elements which are fitted with a vertically movable probe on which part of the shoe rests, the depression of the probe causing a variation in the force that the shoe must overcome to move the jaw.
  • the problem posed by the invention is to improve the operation of retaining elements with variable return force, in order to make them better more efficient and safer.
  • a retaining element of a boot on a ski intended to release the boot in the event of stress excessive, including a body, a holding jaw carried by the body having two wings, a spring housed in the body, a chain of connecting elements between each wing of the jaw and the spring, provided so that the spring opposes in the same way to the displacement of one or the other of the wings of the jaw towards outside, a movable support plate in a vertical direction provided for receive support from part of the shoe, an activated transmission link by the movement of the movable support plate, intended to modify the force of reminder that the spring opposes the movement of each of the wings, and characterized by the fact that the transmission link is connected to each of the chains of connecting elements by different connecting elements which are provided for the transmission link to further modify the restoring force that the spring opposes the outward movement of one of the wings that the force reminder that the spring opposes the outward movement of the other wing.
  • a shoe retaining element on a ski designed to release the shoe in the event of excessive stress, including a body, a retaining jaw carried by the body having two wings, a spring housed in the body, a chain of connecting elements between each wing of the jaw and the spring, provided so that the spring is opposed in the same way to the displacement of one or the other of the wings of the jaw towards the outside, a movable support plate in a vertical direction intended to receive the support part of the shoe, a transmission link activated by the movement of the movable support plate, and characterized in that the connection of transmission is connected to only one of the link element chains between one of the wings and the spring, and that it is intended to modify only the restoring force that the spring exerts on the outward movement of said wing, without modifying the restoring force that the spring exerts on the movement towards the outside of the other wing.
  • the restoring force that the spring opposes to the displacement of the jaw is lowered to the side where the knee is most fragile, or it is increased on the side where the knee is most resistant.
  • this restoring force increases for both direction of rotation, like EP 674 925, but it increases more side where the knee is strongest.
  • the retaining element is more efficient and safer insofar as it allows to move back momentarily, according to the variations of support of the shoe, the shoe release threshold, but where the release threshold is momentarily higher on the side where the skier's knee is more resistant.
  • Figure 1 is a general side view of a retaining assembly of a shoe comprising a front retaining element according to the present invention.
  • Figure 2 is a top view of the assembly of Figure 1.
  • Figure 3 is a top view in partial section of the retaining element before figure 1.
  • FIG. 4 is a front rear to front view of the element in FIG. 3.
  • Figure 5 is a side view of the tie rod of the front element.
  • Figure 6 shows the connection between the slide of the rear element and the plate of transmission.
  • Figures 7 to 10 are side sectional views of the front member which illustrate different phases of its operation.
  • Figure 11 shows in side view the tie rod of a retaining element according another embodiment of the invention.
  • Figure 12 is a view of the other side of the tie rod.
  • FIG. 13 illustrates a variant implementation of the invention.
  • Figures 14 and 15 relate to a variant construction of the element of restraint.
  • FIG. 16 illustrates another variant implementation of the invention.
  • Figure 1 shows the middle part of a ski on which a set of shoe retainer is assembled.
  • the set shown includes a front retainer 1, rear retainer 2, which are respectively designed to releasably retain the front and rear of a shoe.
  • the front retaining element 1 has a jaw 5 carried by a body 3.
  • the body is itself carried by a base 4 by which the retaining element is connected to skiing.
  • the jaw 5 of the element 1 comprises two independent retaining wings 6 and 7 respectively articulated around an axis 8, 9, embedded in the body 3.
  • Each wing has a return beyond its axis wing 6a, 7a, which is engaged against the bearing face of the head 11 of a tie rod 12.
  • the pulling is mobile, it is guided in a housing 13 of the body 3 which contains by elsewhere a return spring 14.
  • the spring bears forwards against a transverse wall 16 of the body 3. It is crossed by the tie rod, and its front part is in support against a plug 17 screwed to the end of the tie rod. Screwing the cap on the tie rod determines the initial pre-stress of the spring.
  • the jaw 5 also comprises a sole clamp 10 for vertical retention which is integral with the body 3.
  • the front element Towards the rear, the front element has a plate support 19 which is provided to receive support from the front of the shoe.
  • the front of the shoe requests one or more the other of the two wings in a lateral direction, against the restoring force of the spring.
  • the release of the shoe occurs when the requested wing has opened a determined angle sufficient to allow the shoe to escape.
  • the rear element 2 illustrated in the figures is also a known element which will not be described in detail. It has a retaining jaw 20 movable by relative to a body 21 against the return force of a spring. As is known, the body 20 is slidably mounted along a longitudinal slide 22, against the return force of a recoil spring which ensures the gripping of the shoe between the two retainers.
  • the element 2 In front of the jaw, the element 2 has a support plate 23 provided to receive support from the back of the shoe.
  • the support plate 23 is mounted on a forward extension of the slide 22.
  • the support plate 23 is movable in a substantially vertical direction.
  • the slide 22 is guided in a base plate 25, and it can pivot on an amplitude limited angular around its rear end which is fitted into the rim rear 26 of the base plate 25.
  • the base plate 25 is integrally connected to the ski, and it has two lateral wings for guiding the slide 22. preferably, each wing closes above each edge of the slide, this which forms two stops 28, 29 which limit the upward movement of the slide. Downward, the movement of the slide is limited by the bottom of the plate. base 25.
  • the slide is held suspended by a block of material elastically deformable 30, for example an elastomer block.
  • a block of material elastically deformable 30 for example an elastomer block.
  • Any other means suitable elastic may also be suitable, for example springs.
  • the rear support plate 23 thus mounted functions as a probe which reacts to variations in the support of the rear end of the shoe. Movement . vertical of the probe is transmitted to the front retaining element by a connection of transmission which will now be described.
  • the front part of the slide 22 is in support against the horizontal branch 31 of a rocker 32 which is pivotally mounted around an axis 33 carried by the base plate 25.
  • the rocker has a support face 34 approximately vertical, which is intended to bear against the bearing face 35 of a plate mobile transmission 36, which connects the two retaining elements.
  • the transmission plate 36 is connected on the side of the front retaining element to a sliding element 38 in the manner of a drawer in a longitudinal direction in a base plate 39 located under the base 4 of the front retaining element.
  • the base 4 and the base plate 39 are integrally connected to the ski, or else together, for example by means of the same screws, or by successive connections, that is to say that the base 4 is connected solidly with the base plate 39 which is itself solidly connected to the ski. Any suitable means of joining is suitable.
  • connection between the drawer element 38 and the transmission plate 36 is a push link, i.e. a link which allows the transmission of forces longitudinal in the longitudinal direction of sliding of the drawer 38. preferably, as illustrated, the link also allows pivoting angle of the transmission plate.
  • connection is ensured by two complementary forms nested one inside the other.
  • connection is also covered by a deformable cover 41 which is assembled on one side to the base or the base plate, and on the other to the base plate transmission.
  • the cover 41 is assembled to the base 4, and carries the backing plate 19.
  • the cover Towards the rear, the cover has a tongue with a stud engaged in the transmission plate 36.
  • the transmission plate 36 is thus movable between a high position shown in Figure 1 where its rear end is above the slide 22, and a low position where its rear end is at the level of the slide, and where the drive plate is raised relative to the ski.
  • the lifting of the support plate is done in an elastic way by means of a arm resiliently returned by a spring.
  • the arm in question is the upper arm 42 of a ski brake 43.
  • the upper arm is articulated on a support which is a forward extension of the rear base plate 25. It is recalled by a spring 45, and extends towards the bottom of each side of the ski by a braking arm provided to slow the race of the ski in case of shoe release.
  • the transmission plate carries in its rear part a shoe 47 with a shoe plate 48 provided to receive the support of the shoe at the time of the engagement of the shoe in the retaining elements.
  • the commitment of the shoe in the retaining elements causes the lowering of the plate 36, and the raising of the braking arms 46, against the force of elastic return of spring 45.
  • the spring 45 ensures both the descent of the braking arms, and the reassembly of the transmission plate.
  • the bearing face 35 of the plate transmission 36 is located at the rear of shoe 47.
  • the length of the transmission plate 36 is provided so that in position low, its bearing face 35 is located against the bearing face 34 of the rocker 32.
  • the drive plate is in two sliding mounted parts, and assembled together by a screw-nut assembly. Any other suitable means is suitable, in particular different plates of connection of different length, provided for different spacings of the elements retainers that have been determined based on different length ranges of shoe.
  • the assembly which has just been described operates in the following manner. AT engagement of the shoe, the transmission plate 36 is brought into contact with the rocker 32.
  • the shoe rests on both the shoe plate 48 and the support plate 23, but transmits most of its vertical support efforts to the support plate 23.
  • the variations of support of the shoe on the plate 23 induce movements of the slide 22, which rotates the rocker 32, which causes the displacement of the transmission plate 36 according to a longitudinal direction.
  • the transmission plate 36 carries with it the drawer element 38.
  • the drawer element 38 Under the head 11 of the tie rod 12, the drawer element 38 has a stud 50 which passes through the upper wall of the base plate 39 at a recess 51. The dimensions of the recess are provided to allow movement of the stud 50 with the movement of the drawer 38.
  • the pad 50 is provided to cooperate with a link 51 which descends from the head 11 of tie rod 12.
  • an intermediate piece 53 is interposed between the wing return 6a and the head 11 of the tie rod.
  • Intermediate piece 53 is housed in a lateral recess of the head 11.
  • the part 53 and the recess have a generally rectangular parallelepiped shape.
  • the intermediate piece is movable relative to the head 11 backwards. It is guided laterally against the lateral face of the recess of the head 11. Towards the front, the part 53 rests against a stop 54 of the head. Upwards, the intermediate piece can rise on a limited amplitude.
  • the rod extends substantially in a vertical direction on the edge of the head of the tie rod located on the side of the intermediate piece 53. It is connected by a articulation around a horizontal and transverse axis to the head 11 on the one hand, to the intermediate piece 53 on the other hand, and extends downwards, where its foot 55 is placed in front of the stud 50.
  • the link 51 and the intermediate piece 53 form the connection between the transmission link and the chain of connecting elements between wing 6 and the spring. In this case, the transmission link is not connected than to the link chain of wing 6, and has no action on the link chain of wing 7.
  • the pad 50 At rest, i.e. in the absence of forward movement of the plate transmission 36, the pad 50 is set back forward with respect to the foot 55 of the link from a distance at least equal to the maximum stroke of displacement of the tie rod when the wing 6 is opened. This is shown in the figure. 7.
  • a stop formed for example by the bottom 58 of the housing of the drawer element 38 limits the stroke of this element in a position where its stud 50 just comes into contact with the foot 55 of the link, while the wing 6 is in closed rest position. This is illustrated in Figure 8.
  • the wing return 6a causes the rearward intermediate piece and the head of the tie rod.
  • the link 51 also moves towards the rear.
  • the intermediate piece In the absence of intense support on the support plate 23, that is to say in the retracted position of the transmission plate 36, the intermediate piece is in stop against stop 54 of the head of the tie rod. It trains the head of the tie rod directly in its movement, forming with it only a block.
  • Figure 10 shows the connection between wing 7 and the tie rod.
  • the return wing 7a of wing 7 is in direct engagement with the head 11 of the tie rod 12.
  • the return force of the wing 7 is not modified.
  • the other retaining element of a pair of front elements has a reverse arrangement, that is to say in particular an intermediate part and a link located on the other side of the tie rod, so that these are the two wings internal elements which have a variable force of resistance to the opening.
  • Any suitable means of locating retaining elements or skis or any coding means is suitable for the shoes to be associated with good restraints.
  • the retaining wing located on the inside of the ski where this intense support product, has an opening resistance force which is increased by compared to the other wing, due to the depression of the plate 23 and the advancement transmission plate 36 and drawer 38.
  • This is advantageous because the skier can use their skis more, while driving, by reducing the risk of untimely triggering of the ski which it requests the inner wing.
  • the skier lowers the hardness of the elements of restraint, i.e. decreases the stress threshold beyond which the restraint releases the shoe, knowing that in the driving phases, by its rear support, it temporarily increases the hardness of the inner wings of its retainers.
  • FIGS. 11 and 12 An alternative embodiment of the invention is illustrated in FIGS. 11 and 12.
  • the head 59 of the tie rod 60 is equipped on both sides with a rod 61, 62 of the same kind as the preceding rod 51, and of one piece intermediate 63, 64 similar to intermediate piece 53.
  • the rods 61 and 62 and the intermediate parts 63, 64 are respectively independent of each other.
  • the transmission link is connected to the two chains connecting the wings to the spring, but the elements of connection, i.e. the rods and / or the intermediate parts are different so that the transmission link activates one of the links more than the other.
  • the threshold of triggering of the two wings varies, that of the inner wing varying however more than that of the outer wing.
  • FIG. 13 illustrates another variant implementation of the invention.
  • the effect of the drawer element on the link (s) is neutralized in the case where the front of the shoe tends to urge the jaw upwards.
  • This configuration corresponds for example to a fall towards the rear of the skier.
  • the figure shows a drawer element in two parts 70 and 71 joined between them by a toggle device 72.
  • the toggle joint device 72 includes two small levers joined together by a central articulation.
  • the front support plate 73 on which the front of the shoe rests is vertically movable.
  • its rear part is connected to the base of the retaining element by a kind of hinge.
  • a means of relatively flexible elastic return, for example a spring 74 recalls the plate to the top.
  • the front part of the plate rests on the knee joint.
  • the knee pad 72 is flattened.
  • the pad 77 is in the advanced position and the drawer element then has the same operation with respect to the link, or the case appropriate to the rods, as the previous drawer element.
  • Figures 14 and 15 relate to another mode of construction of the front retainer. They illustrate a retaining element 81 of the type to rotating body and jaw forming a one-piece assembly with the body. So, element 81 comprises a jaw 82 comprising two retaining wings lateral and forming with the body 83 a one-piece body.
  • the body is pivotally mounted around a vertical cylindrical pivot 84 carried by a base 85 which is provided to be secured to the ski by any suitable means, for example screws.
  • the pivot 84 carries on the front a flat 86 oriented transversely to the longitudinal direction defined by the retainer.
  • a piston 87, guided in the body, is pushed back by a spring 88 against the flat 86.
  • the body drives with it the piston 87 which, in contact with one or the other of the edges side of the flat, is forced to advance by compressing the spring 88.
  • the chains of connecting elements between each of the wings and the spring includes the jaw, the body, the pivot, and the flat situated in front of the pivot, with each of its lateral edges, against which the piston rests in the direction of pivoting of the body.
  • Each wing of the jaw is actually associated with an edge of the flat which is situated on the opposite side, that is to say on the side of the other wing with respect to a vertical and longitudinal median plane.
  • the pivot has a recess on each of the lateral edges of the flat, that is to say that the flat has a width less than the diameter of the pivot.
  • One of these recesses is limited to the rear by a rod 90 which extends along the pivot.
  • Baguette 90 is mobile, it is carried by a drawer element 91 guided in longitudinal sliding relative to the base. This element is the same type as the drawer element 38 previous, and, like the previous element, it is intended to be pushed back to the front in case of variation in the support of the skier's shoe on a feeler. In being pushed forward, the drawer element 91 moves the rod 90, and places its front face substantially in the extension of the bearing face of the flat 86.
  • the other element of a pair of elements of retained would have a reverse arrangement of the rod, that is to say that the rod 90 would be located on the other side of the longitudinal and vertical median plane of the element of restraint.
  • the pair retainers would in this case have all suitable mechanical or visual or other means to ensure that the element right retainer is associated with the skier's right shoe and the left element is associated with the left shoe.
  • FIG. 16 shows a variant of a retaining element 92 with a pivot 93 having a lateral recess on each of the lateral edges of the flat 96.
  • These recesses are limited by two movable rods, 94 and 95, one on each side flat 96, carried integrally by a drawer element.
  • One of the chopsticks, in the occurrence, the rod 94 in FIG. 16, has a more lateral edge blunt than the other so that, in the case of the advanced position of the drawer and both rods, the increase in the force that the spring opposes to the pivoting of the body is momentarily more important on one side than on the other.
  • the drawer element and the two rods are shown in the advanced position.
  • the invention is not limited to the embodiments described. It could apply to construction variants of the embodiment described. It could also apply to other constructions of elements of retainer, for example elements of the fixed-body and one-piece jaw type comprising two wings connected to each other. Other constructions are also possible.
  • the chain of connecting elements between a wing and the spring is formed by all of the elements which connect the wing to the spring, and which are activated in movement by the displacement of the wing in question.
  • the movable support plate, the connection with the drawer element could also be replaced by an electronic device.
  • a strain gauge would assess the support of the shoe on the ski.
  • a processing circuit would activate an electromagnet or other device likely to modify the triggering threshold of the retaining element at the way of what has been described.
  • the transmission link between the movable support plate and the wing could be expected to have an opposite effect, which would decrease the restoring force applied by the spring to the wing, instead of increasing it.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

The retaining element for a boot on a ski board comprises a body (3) which carries a retaining jaw with two webs (6,7). There is spring (14) housed in the body and a chain of connecting elements (6a,7a) between each web and spring such that the spring opposes outward displacement of either web. A vertically movable support plate supports part of the boot. A transmission connection activated by movement of the support plate modifies the return force the spring opposes to movement of each web. The transmission connection acts in a different way on the return force than that the spring exerts on each web. This results in the release threshold of one of the webs to be momentarily greater than that of the other web.

Description

L'invention concerne un élément de retenue de l'avant d'une chaussure sur une planche de glisse. En second lieu, l'invention concerne un ensemble d'éléments avant prévus pour retenir les deux chaussures d'un skieur sur une ou des planches de glisse.The invention relates to a retaining element for the front of a shoe on a gliding board. Secondly, the invention relates to a set front elements intended to retain the two shoes of a skier on one or boards for sliding.

De façon connue, un élément de retenue présente un corps, une mâchoire de retenue portée par le corps. Sous l'action des efforts de la chaussure, la mâchoire est mobile latéralement de part et d'autre d'une position centrée contre la force de rappel d'un ressort logé dans le corps.In known manner, a retaining element has a body, a jaw of restraint carried by the body. Under the action of the efforts of the shoe, the jaw is movable laterally on either side from a position centered against the force of reminder of a spring housed in the body.

Parmi les éléments de retenue, l'invention concerne plus particulièrement les éléments qui sont équipés d'un palpeur mobile verticalement sur lequel une partie de la chaussure repose, l'enfoncement du palpeur provoquant une variation de la force que la chaussure doit vaincre pour déplacer la mâchoire.Among the retaining elements, the invention relates more particularly to elements which are fitted with a vertically movable probe on which part of the shoe rests, the depression of the probe causing a variation in the force that the shoe must overcome to move the jaw.

Ainsi, on connaít d'après la demande de brevet publiée sous le numéro DE-OS-33 07 022 un élément de retenue dont la plaque d'appui avant est mobile. Un appui de la chaussure sur la plaque produit un abaissement de la force de rappel que le ressort exerce sur la mâchoire. L'abaissement de la force de rappel a pour but de compenser l'augmentation des frottements occasionnés par un appui plus fort de la chaussure sur la plaque d'appui.Thus, we know from the patent application published under the number DE-OS-33 07 022 a retaining element with a movable front support plate. Pressing the shoe on the plate produces a lowering of the force of reminder that the spring exerts on the jaw. The lowering of the restoring force has intended to compensate for the increase in friction caused by support stronger shoe on the backing plate.

A l'inverse, on connaít d'après la demande de brevet publiée sous le numéro EP 674 925 un élément de retenue auquel est associé un palpeur mobile. L'enfoncement du palpeur, par exemple, sous l'effet d'une variation d'appui du skieur, provoque une augmentation de la force de rappel que la chaussure doit vaincre pour être libérée. L'augmentation de la force de rappel a ici pour effet de rendre plus ferme le maintien de la chaussure dans l'élément de retenue avant, notamment en sortie de virage lorsque le skieur vient sur l'arrière des skis, et qu'il exerce un effort latéral de conduite important sur l'avant de ses chaussures.Conversely, we know from the patent application published under the number EP 674 925 a retaining element with which a movable probe is associated. The depression of the probe, for example, under the effect of a variation of support of the skier, causes an increase in the restoring force that the shoe must overcome to be released. The increase in the restoring force here has the effect of make the retention of the shoe in the front retaining element more firm, especially at the end of a turn when the skier comes on the back of the skis, and he exerts a significant lateral driving force on the front of his shoes.

De tels dispositifs donnent de bons résultats dans leur domaine d'application respectif. Toutefois, ils agissent sur la mâchoire de la même façon pour les deux sens de déplacement que la mâchoire peut présenter.Such devices give good results in their field of application respective. However, they act on the jaw the same way for both direction of movement that the jaw can present.

Or l'on sait que les genoux d'un skieur peuvent endurer des efforts plus ou moins élevés avant qu'une lésion ne survienne, selon le sens dans lequel les pieds sont entraínés. On sait en effet que le genou du skieur, qui est sollicité lors d'une chute en torsion est plus fragile pour une torsion de la jambe correspondant à une rotation du pied vers l'intérieur que pour une rotation vers l'extérieur.We know that a skier's knees can endure more or less lower before an injury occurs, depending on the direction in which feet are trained. We know that the skier's knee, which is stressed during a fall in torsion is more fragile for a torsion of the corresponding leg to an inward rotation of the foot than to an outward rotation.

Dans ce domaine, la demande de brevet publiée sous le numéro EP 667 174 décrit un élément avant de retenue équipé d'une plaque d'appui oscillante pour un mouvement de roulis autour d'un axe longitudinal médian. Le basculement de la pédale ne se produit que dans une seule direction par rapport à une position de repos horizontale. Le basculement produit une diminution de la force de rappel que la chaussure doit vaincre pour être libérée par la mâchoire. Toutefois, cet effet de diminution ne se produit qu'en cas de chute où la chaussure vrille dans la mâchoire. En outre, la même diminution de l'effort de retenue est appliquée sur les deux ailes de retenue de la mâchoire.In this area, the patent application published under the number EP 667,174 describes a front retaining element equipped with an oscillating support plate for a rolling movement around a median longitudinal axis. The tilting of the pedal only occurs in one direction from a position of horizontal rest. The tilting produces a decrease in the restoring force that the shoe must win to be released by the jaw. However, this effect of decrease only occurs in a fall where the shoe twists in the jaw. In addition, the same reduction in the restraint force is applied to the two jaw retaining wings.

Le problème posé par l'invention est d'améliorer le fonctionnement des éléments de retenue à force de rappel variable, dans le but de mieux les rendre plus performants et plus sûrs.The problem posed by the invention is to improve the operation of retaining elements with variable return force, in order to make them better more efficient and safer.

Selon l'invention, ce problème est résolu par un élément de retenue d'une chaussure sur un ski prévu pour libérer la chaussure en cas de sollicitation excessive, comprenant un corps, une mâchoire de retenue portée par le corps ayant deux ailes, un ressort logé dans le corps, une chaíne d'éléments de liaison entre chaque aile de la mâchoire et le ressort, prévue pour que le ressort s'oppose de la même façon au déplacement de l'une ou l'autre des ailes de la mâchoire vers l'extérieur, une plaque d'appui mobile selon une direction verticale prévue pour recevoir l'appui d'une partie de la chaussure, une liaison de transmission activée par le mouvement de la plaque d'appui mobile, prévue pour modifier la force de rappel que le ressort oppose au mouvement de chacune des ailes, et caractérisé par le fait que la liaison de transmission est connectée à chacune des chaínes d'éléments de liaison par des éléments de connexion différents qui sont prévus pour que la liaison de transmission modifie davantage la force de rappel que le ressort oppose au mouvement vers l'extérieur de l'une des ailes que la force de rappel que le ressort oppose au mouvement vers l'extérieur de l'autre aile.According to the invention, this problem is solved by a retaining element of a boot on a ski intended to release the boot in the event of stress excessive, including a body, a holding jaw carried by the body having two wings, a spring housed in the body, a chain of connecting elements between each wing of the jaw and the spring, provided so that the spring opposes in the same way to the displacement of one or the other of the wings of the jaw towards outside, a movable support plate in a vertical direction provided for receive support from part of the shoe, an activated transmission link by the movement of the movable support plate, intended to modify the force of reminder that the spring opposes the movement of each of the wings, and characterized by the fact that the transmission link is connected to each of the chains of connecting elements by different connecting elements which are provided for the transmission link to further modify the restoring force that the spring opposes the outward movement of one of the wings that the force reminder that the spring opposes the outward movement of the other wing.

Il est également résolu par un élément de retenue d'une chaussure sur un ski prévu pour libérer la chaussure en cas de sollicitation excessive, comprenant un corps, une mâchoire de retenue portée par le corps ayant deux ailes, un ressort logé dans le corps, une chaíne d'éléments de liaison entre chaque aile de la mâchoire et le ressort, prévue pour que le ressort s'oppose de la même façon au déplacement de l'une ou l'autre des ailes de la mâchoire vers l'extérieur, une plaque d'appui mobile selon une direction verticale prévue pour recevoir l'appui d'une partie de la chaussure, une liaison de transmission activée par le mouvement de la plaque d'appui mobile, et caractérisé par le fait que la liaison de transmission est connectée à l'une seulement des chaínes d'éléments de liaison entre l'une des ailes et le ressort, et qu'elle est prévue pour modifier seulement la force de rappel que le ressort exerce sur le mouvement vers l'extérieur de ladite aile, sans modifier la force de rappel que le ressort exerce sur le mouvement vers l'extérieur de l'autre aile. It is also solved by a shoe retaining element on a ski designed to release the shoe in the event of excessive stress, including a body, a retaining jaw carried by the body having two wings, a spring housed in the body, a chain of connecting elements between each wing of the jaw and the spring, provided so that the spring is opposed in the same way to the displacement of one or the other of the wings of the jaw towards the outside, a movable support plate in a vertical direction intended to receive the support part of the shoe, a transmission link activated by the movement of the movable support plate, and characterized in that the connection of transmission is connected to only one of the link element chains between one of the wings and the spring, and that it is intended to modify only the restoring force that the spring exerts on the outward movement of said wing, without modifying the restoring force that the spring exerts on the movement towards the outside of the other wing.

Selon ce qui est souhaité, la force de rappel que le ressort oppose au déplacement de la mâchoire est abaissée du côté où le genou est le plus fragile, ou bien, elle est augmentée du côté où le genou est le plus résistant.Depending on what is desired, the restoring force that the spring opposes to the displacement of the jaw is lowered to the side where the knee is most fragile, or it is increased on the side where the knee is most resistant.

Selon une seconde solution, cette force de rappel augmente pour les deux sens de rotation, à la manière du EP 674 925, mais elle augmente davantage du côté où le genou est le plus résistant.According to a second solution, this restoring force increases for both direction of rotation, like EP 674 925, but it increases more side where the knee is strongest.

Ainsi, l'élément de retenue est plus performant et plus sûr dans la mesure où il permet de reculer momentanément, selon les variations d'appui de la chaussure, le seuil de libération de la chaussure, mais où le seuil de libération est momentanément plus élevé au côté où le genou du skieur est plus résistant.Thus, the retaining element is more efficient and safer insofar as it allows to move back momentarily, according to the variations of support of the shoe, the shoe release threshold, but where the release threshold is momentarily higher on the side where the skier's knee is more resistant.

Le fait que les variations de l'effort de rappel soit momentané permet en outre de mieux contrôler dans quelles circonstances ces variations doivent se produire.The fact that the variations in the recall effort are momentary also allows to better control under what circumstances these variations must occur.

L'invention sera mieux comprise en se référant à la description ci-dessous et aux dessins en annexe qui en font partie intégrante.The invention will be better understood by referring to the description below and the annexed drawings which form an integral part thereof.

La figure 1 est une vue générale de côté d'un ensemble de retenue d'une chaussure comprenant un élément de retenue avant selon la présente invention.Figure 1 is a general side view of a retaining assembly of a shoe comprising a front retaining element according to the present invention.

La figure 2 est une vue de dessus de l'ensemble de la figure 1.Figure 2 is a top view of the assembly of Figure 1.

La figure 3 est une vue de dessus en coupe partielle de l'élément de retenue avant de la figure 1.Figure 3 is a top view in partial section of the retaining element before figure 1.

La figure 4 est une vue de face d'arrière en avant de l'élément de la figure 3.FIG. 4 is a front rear to front view of the element in FIG. 3.

La figure 5 est une vue vue de côté du tirant de l'élément avant.Figure 5 is a side view of the tie rod of the front element.

La figure 6 montre la liaison entre la glissière de l'élément arrière et la plaque de transmission.Figure 6 shows the connection between the slide of the rear element and the plate of transmission.

Les figures 7 à 10 sont des vues de côté en coupe de l'élément avant qui illustrent différentes phases de son fonctionnement.Figures 7 to 10 are side sectional views of the front member which illustrate different phases of its operation.

La figure 11 représente en vue de côté le tirant d'un élément de retenue selon un autre mode de réalisation de l'invention.Figure 11 shows in side view the tie rod of a retaining element according another embodiment of the invention.

La figure 12 est une vue de l'autre côté du tirant.Figure 12 is a view of the other side of the tie rod.

La figure 13 illustre une variante de mise en oeuvre de l'invention.FIG. 13 illustrates a variant implementation of the invention.

Les figures 14 et 15 sont relatives à une variante de construction de l'élément de retenue.Figures 14 and 15 relate to a variant construction of the element of restraint.

La figure 16 illustre une autre variante de mise en oeuvre de l'invention.FIG. 16 illustrates another variant implementation of the invention.

La figure 1 représente la partie médiane d'un ski sur laquelle un ensemble de retenue d'une chaussure est assemblé. L'ensemble représenté comprend un élément de retenue avant 1, un élément de retenue arrière 2, qui sont respectivement prévus pour retenir de façon libérable l'avant et l'arrière d'une chaussure. Figure 1 shows the middle part of a ski on which a set of shoe retainer is assembled. The set shown includes a front retainer 1, rear retainer 2, which are respectively designed to releasably retain the front and rear of a shoe.

L'élément de retenue avant 1 présente une mâchoire 5 portée par un corps 3. Le corps est lui-même porté par une embase 4 par laquelle l'élément de retenue est relié au ski.The front retaining element 1 has a jaw 5 carried by a body 3. The body is itself carried by a base 4 by which the retaining element is connected to skiing.

En se reportant à la figure 3, la mâchoire 5 de l'élément 1 comprend deux ailes de retenue indépendantes 6 et 7 respectivement articulées autour d'un axe 8, 9, encastré dans le corps 3. Chaque aile présente au-delà de son axe un retour d'aile 6a, 7a, qui est en prise contre la face d'appui de la tête 11 d'un tirant 12. Le tirant est mobile, il est guidé dans un logement 13 du corps 3 qui renferme par ailleurs un ressort de rappel 14. Le ressort est en appui vers l'avant contre une paroi transversale 16 du corps 3. Il est traversé par le tirant, et sa partie avant est en appui contre un bouchon 17 vissé à l'extrémité du tirant. Le vissage du bouchon sur le tirant détermine la pré-contrainte initiale du ressort. Ces différents éléments forment les chaínes d'éléments de liaison entre chacune des ailes 6 et 7 et le ressort de rappel 14.Referring to Figure 3, the jaw 5 of the element 1 comprises two independent retaining wings 6 and 7 respectively articulated around an axis 8, 9, embedded in the body 3. Each wing has a return beyond its axis wing 6a, 7a, which is engaged against the bearing face of the head 11 of a tie rod 12. The pulling is mobile, it is guided in a housing 13 of the body 3 which contains by elsewhere a return spring 14. The spring bears forwards against a transverse wall 16 of the body 3. It is crossed by the tie rod, and its front part is in support against a plug 17 screwed to the end of the tie rod. Screwing the cap on the tie rod determines the initial pre-stress of the spring. These different elements form the chains of connecting elements between each of the wings 6 and 7 and the return spring 14.

La mâchoire 5 comprend par ailleurs un serre-semelle 10 de retenue verticale qui est solidaire du corps 3. Vers l'arrière, l'élément avant présente une plaque d'appui 19 qui est prévue pour recevoir l'appui de l'avant de la chaussure.The jaw 5 also comprises a sole clamp 10 for vertical retention which is integral with the body 3. Towards the rear, the front element has a plate support 19 which is provided to receive support from the front of the shoe.

De façon connue, en fonctionnement, l'avant de la chaussure sollicite l'une ou l'autre des deux ailes selon une direction latérale, contre la force de rappel du ressort. La libération de la chaussure intervient lorsque l'aile sollicitée s'est ouverte d'un angle déterminé suffisant pour laisser échapper la chaussure.In known manner, in operation, the front of the shoe requests one or more the other of the two wings in a lateral direction, against the restoring force of the spring. The release of the shoe occurs when the requested wing has opened a determined angle sufficient to allow the shoe to escape.

L'élément arrière 2 illustré dans les figures est également un élément connu qui ne sera pas décrit en détail. Il présente une mâchoire de retenue 20 mobile par rapport à un corps 21 contre la force de rappel d'un ressort. De façon connue, le corps 20 est monté coulissant le long d'une glissière longitudinale 22, contre la force de rappel d'un ressort de recul qui assure le pincement de la chaussure entre les deux éléments de retenue.The rear element 2 illustrated in the figures is also a known element which will not be described in detail. It has a retaining jaw 20 movable by relative to a body 21 against the return force of a spring. As is known, the body 20 is slidably mounted along a longitudinal slide 22, against the return force of a recoil spring which ensures the gripping of the shoe between the two retainers.

En avant de la mâchoire, l'élément 2 présente une plaque d'appui 23 prévue pour recevoir l'appui de l'arrière de la chaussure.In front of the jaw, the element 2 has a support plate 23 provided to receive support from the back of the shoe.

Selon le mode de réalisation illustré, la plaque d'appui 23 est montée sur un prolongement vers l'avant de la glissière 22. De plus, la plaque d'appui 23 est mobile selon une direction sensiblement verticale. Pour cela, la glissière 22 est guidée dans une plaque de base 25, et elle peut pivoter sur une amplitude angulaire limitée autour de son extrémité arrière qui est emboítée dans le rebord arrière 26 de la plaque de base 25. La plaque de base 25 est liée solidairement au ski, et elle présente deux ailes latérales de guidage de la glissière 22. De préférence, chaque aile se referme au dessus de chaque bord de la glissière, ce qui forme deux butées 28, 29 qui limitent le mouvement vers le haut de la glissière. Vers le bas, le mouvement de la glissière est limité par le fond de la plaque de base 25.According to the illustrated embodiment, the support plate 23 is mounted on a forward extension of the slide 22. In addition, the support plate 23 is movable in a substantially vertical direction. For this, the slide 22 is guided in a base plate 25, and it can pivot on an amplitude limited angular around its rear end which is fitted into the rim rear 26 of the base plate 25. The base plate 25 is integrally connected to the ski, and it has two lateral wings for guiding the slide 22. preferably, each wing closes above each edge of the slide, this which forms two stops 28, 29 which limit the upward movement of the slide. Downward, the movement of the slide is limited by the bottom of the plate. base 25.

De préférence, la glissière est maintenue suspendue par un bloc de matériau élastiquement déformable 30, par exemple un bloc élastomère. Tout autre moyen élastique approprié peut aussi convenir, par exemple des ressorts.Preferably, the slide is held suspended by a block of material elastically deformable 30, for example an elastomer block. Any other means suitable elastic may also be suitable, for example springs.

La plaque d'appui arrière 23 ainsi montée fonctionne comme un palpeur qui réagit aux variations d'appui de l'extrémité arrière de la chaussure. Le mouvement . vertical du palpeur est transmis à l'élément de retenue avant par une liaison de transmission qui va maintenant être décrite.The rear support plate 23 thus mounted functions as a probe which reacts to variations in the support of the rear end of the shoe. Movement . vertical of the probe is transmitted to the front retaining element by a connection of transmission which will now be described.

En se reportant à la figure 6, la partie avant de la glissière 22 est en appui contre la branche horizontale 31 d'un basculeur 32 qui est monté pivotant autour d'un axe 33 porté par la plaque de base 25.Referring to Figure 6, the front part of the slide 22 is in support against the horizontal branch 31 of a rocker 32 which is pivotally mounted around an axis 33 carried by the base plate 25.

Vers l'avant, le basculeur présente une face d'appui 34 approximativement verticale, qui est'prévue pour porter contre la face d'appui 35 d'une plaque de transmission 36 mobile, qui relie les deux éléments de retenue.Forward, the rocker has a support face 34 approximately vertical, which is intended to bear against the bearing face 35 of a plate mobile transmission 36, which connects the two retaining elements.

Dans le mode de réalisation illustré, la plaque de transmission 36 est reliée du côté de l'élément de retenue avant à un élément 38 coulissant à la manière d'un tiroir selon une direction longitudinale dans une plaque de base 39 située sous l'embase 4 de l'élément de retenue avant. L'embase 4 et la plaque de base 39 sont reliées de façon solidaire au ski, ou bien ensemble, par exemple au moyen des mêmes vis, ou bien par liaisons successives, c'est-à-dire que l'embase 4 est reliée solidairement à la plaque de base 39 qui est reliée elle-même solidairement au ski. Tout moyen approprié de solidarisation convient.In the illustrated embodiment, the transmission plate 36 is connected on the side of the front retaining element to a sliding element 38 in the manner of a drawer in a longitudinal direction in a base plate 39 located under the base 4 of the front retaining element. The base 4 and the base plate 39 are integrally connected to the ski, or else together, for example by means of the same screws, or by successive connections, that is to say that the base 4 is connected solidly with the base plate 39 which is itself solidly connected to the ski. Any suitable means of joining is suitable.

La liaison entre l'élément tiroir 38 et la plaque de transmission 36 est une liaison de poussée c'est-à-dire une liaison qui permet la transmission d'efforts longitudinaux dans la direction longitudinale de coulissement du tiroir 38. De préférence, comme cela est illustré, la liaison autorise également un pivotement angulaire de la plaque de transmission.The connection between the drawer element 38 and the transmission plate 36 is a push link, i.e. a link which allows the transmission of forces longitudinal in the longitudinal direction of sliding of the drawer 38. preferably, as illustrated, the link also allows pivoting angle of the transmission plate.

Par exemple comme cela est visible dans la figure 1, la liaison est assurée par deux formes complémentaires emboítées l'une dans l'autre.For example, as can be seen in FIG. 1, the connection is ensured by two complementary forms nested one inside the other.

La liaison est par ailleurs recouverte par un capot déformable 41 qui est assemblé d'un côté à l'embase ou la plaque de base, et de l'autre à la plaque de transmission. Par exemple, le capot 41 est assemblé à l'embase 4, et porte la plaque d'appui 19. Vers l'arrière, le capot présente une languette avec un plot engagé dans la plaque de transmission 36.The connection is also covered by a deformable cover 41 which is assembled on one side to the base or the base plate, and on the other to the base plate transmission. For example, the cover 41 is assembled to the base 4, and carries the backing plate 19. Towards the rear, the cover has a tongue with a stud engaged in the transmission plate 36.

La plaque de transmission 36 est ainsi mobile entre une position haute représentée en figure 1 où son extrémité arrière est au dessus de la glissière 22, et une position basse où son extrémité arrière se trouve au niveau de la glissière, et où la plaque de transmission est surélevée par rapport au ski. The transmission plate 36 is thus movable between a high position shown in Figure 1 where its rear end is above the slide 22, and a low position where its rear end is at the level of the slide, and where the drive plate is raised relative to the ski.

Le relevage de la plaque d'appui se fait de façon élastique au moyen d'un bras rappelé élastiquement par un ressort. De préférence, comme cela est représenté, le bras en question est le bras supérieur 42 d'un frein de ski 43. Le bras supérieur est articulé sur un support qui est un prolongement vers l'avant de la plaque de base arrière 25. Il est rappelé par un ressort 45, et se prolonge vers le bas de chaque côté du ski par un bras de freinage prévu pour ralentir la course du ski en cas de libération de la chaussure.The lifting of the support plate is done in an elastic way by means of a arm resiliently returned by a spring. Preferably, as is shown, the arm in question is the upper arm 42 of a ski brake 43. The upper arm is articulated on a support which is a forward extension of the rear base plate 25. It is recalled by a spring 45, and extends towards the bottom of each side of the ski by a braking arm provided to slow the race of the ski in case of shoe release.

La plaque de transmission porte dans sa partie arrière un sabot 47 avec une plaque de chaussage 48 prévue pour recevoir l'appui de la chaussure au moment de l'engagement de la chaussure dans les éléments de retenue. L'engagement de la chaussure dans les éléments de retenue provoque l'abaissement de la plaque de transmission 36, et la remontée des bras de freinage 46, contre la force de rappel élastique du ressort 45. Lors de la libération volontaire ou accidentelle de la chaussure, le ressort 45 assure à la fois la descente des bras de freinage, et la remontée de la plaque de transmission. La face d'appui 35 de la plaque de transmission 36 se trouve à l'arrière du sabot 47.The transmission plate carries in its rear part a shoe 47 with a shoe plate 48 provided to receive the support of the shoe at the time of the engagement of the shoe in the retaining elements. The commitment of the shoe in the retaining elements causes the lowering of the plate 36, and the raising of the braking arms 46, against the force of elastic return of spring 45. Upon voluntary or accidental release of the shoe, the spring 45 ensures both the descent of the braking arms, and the reassembly of the transmission plate. The bearing face 35 of the plate transmission 36 is located at the rear of shoe 47.

La longueur de la plaque de transmission 36 est prévue pour qu'en position basse, sa face d'appui 35 se trouve contre la face d'appui 34 du basculeur 32. Pour cela, par exemple, comme cela est illustré, la plaque de transmission est en deux parties montées coulissantes, et assemblées entre elles par un ensemble vis-écrou. Tout autre moyen approprié convient, notamment différentes plaques de liaison de longueur différentes, prévues pour différents écartements des éléments de retenue qui ont été déterminés en fonction de différentes plages de longueur de chaussure.The length of the transmission plate 36 is provided so that in position low, its bearing face 35 is located against the bearing face 34 of the rocker 32. For this, for example, as shown, the drive plate is in two sliding mounted parts, and assembled together by a screw-nut assembly. Any other suitable means is suitable, in particular different plates of connection of different length, provided for different spacings of the elements retainers that have been determined based on different length ranges of shoe.

L'ensemble qui vient d'être décrit fonctionne de la façon suivante. A l'engagement de la chaussure, la plaque de transmission 36 est mise au contact du basculeur 32. La chaussure repose à la fois sur la plaque de chaussage 48 et la plaque d'appui 23, mais transmet la majeure partie de ses efforts d'appui verticaux à la plaque d'appui 23. Les variations d'appui de la chaussure sur la plaque 23 induisent des mouvements de la glissière 22, qui entraíne en rotation le basculeur 32, ce qui provoque le déplacement de la plaque de transmission 36 selon une direction longitudinale.The assembly which has just been described operates in the following manner. AT engagement of the shoe, the transmission plate 36 is brought into contact with the rocker 32. The shoe rests on both the shoe plate 48 and the support plate 23, but transmits most of its vertical support efforts to the support plate 23. The variations of support of the shoe on the plate 23 induce movements of the slide 22, which rotates the rocker 32, which causes the displacement of the transmission plate 36 according to a longitudinal direction.

La plaque de transmission 36 entraíne avec elle l'élément tiroir 38.The transmission plate 36 carries with it the drawer element 38.

Sous la tête 11 du tirant 12, l'élément tiroir 38 présente un plot 50 qui traverse la paroi supérieure de la plaque de base 39 au niveau d'un évidement 51. Les dimensions de l'évidement sont prévues pour permettre le déplacement du plot 50 avec le mouvement du tiroir 38.Under the head 11 of the tie rod 12, the drawer element 38 has a stud 50 which passes through the upper wall of the base plate 39 at a recess 51. The dimensions of the recess are provided to allow movement of the stud 50 with the movement of the drawer 38.

Le plot 50 est prévu pour coopérer avec une biellette 51 qui descend de la tête 11 du tirant 12. The pad 50 is provided to cooperate with a link 51 which descends from the head 11 of tie rod 12.

Du côté de l'aile où l'on souhaite augmenter la force de retenue de l'aile avec l'appui du skieur, l'aile 6 dans le cas des figures, une pièce intermédiaire 53 est intercalée entre le retour d'aile 6a et la tête 11 du tirant. La pièce intermédiaire 53 est logée dans un évidement latéral de la tête 11. La pièce 53 et l'évidement ont une forme globalement parallélépipédique rectangle. La pièce intermédiaire est mobile par rapport à la tête 11 vers l'arrière. Elle se guide latéralement contre la face latérale de l'évidement de la tête 11. Vers l'avant, la pièce 53 s'appuie contre une butée 54 de la tête. Vers le haut, la pièce intermédiaire peut s'élever sur une amplitude limitée.On the side of the wing where you want to increase the retaining force of the wing with the support of the skier, the wing 6 in the case of the figures, an intermediate piece 53 is interposed between the wing return 6a and the head 11 of the tie rod. Intermediate piece 53 is housed in a lateral recess of the head 11. The part 53 and the recess have a generally rectangular parallelepiped shape. The intermediate piece is movable relative to the head 11 backwards. It is guided laterally against the lateral face of the recess of the head 11. Towards the front, the part 53 rests against a stop 54 of the head. Upwards, the intermediate piece can rise on a limited amplitude.

La biellette s'étend sensiblement selon une direction verticale sur le bord de la tête du tirant situé du côté de la pièce intermédiaire 53. Elle est reliée par une articulation autour d'un axe horizontal et transversal à la tête 11 d'une part, à la pièce intermédiaire 53 d'autre part, et s'étend vers le bas, où son pied 55 est placé en avant du plot 50. La biellette 51 et la pièce intermédiaire 53 forment la connexion entre la liaison de transmission et la chaíne d'éléments de liaison entre l'aile 6 et le ressort. Dans le cas présent, la liaison de transmission n'est connectée qu'à la chaíne de liaison de l'aile 6, et n'a pas d'action sur la chaíne de liaison de l'aile 7.The rod extends substantially in a vertical direction on the edge of the head of the tie rod located on the side of the intermediate piece 53. It is connected by a articulation around a horizontal and transverse axis to the head 11 on the one hand, to the intermediate piece 53 on the other hand, and extends downwards, where its foot 55 is placed in front of the stud 50. The link 51 and the intermediate piece 53 form the connection between the transmission link and the chain of connecting elements between wing 6 and the spring. In this case, the transmission link is not connected than to the link chain of wing 6, and has no action on the link chain of wing 7.

Au repos, c'est-à-dire en l'absence de mouvement vers l'avant de la plaque de transmission 36, le plot 50 se trouve en retrait vers l'avant par rapport au pied 55 de la biellette d'une distance au moins égale à la course maximum de déplacement du tirant en cas d'ouverture de l'aile 6. Ceci est représenté en figure 7.At rest, i.e. in the absence of forward movement of the plate transmission 36, the pad 50 is set back forward with respect to the foot 55 of the link from a distance at least equal to the maximum stroke of displacement of the tie rod when the wing 6 is opened. This is shown in the figure. 7.

D'un autre côté, en cas d'appui intense sur la plaque d'appui 23, la course de déplacement vers l'avant de la plaque de transmission 36 est suffisante pour que le plot 50 vienne au contact du pied 55 et soit susceptible d'entraver son mouvement vers l'avant. De préférence, une butée formée par exemple par le fond 58 du logement de l'élément tiroir 38 limite la course de cet élément dans une position où son plot 50 arrive juste au contact du pied 55 de la biellette, alors que l'aile 6 est en position fermée de repos. Ceci est illustré en figure 8.On the other hand, in the event of intense support on the support plate 23, the travel of forward movement of the transmission plate 36 is sufficient for the pad 50 comes into contact with foot 55 and is liable to hinder its movement forward. Preferably, a stop formed for example by the bottom 58 of the housing of the drawer element 38 limits the stroke of this element in a position where its stud 50 just comes into contact with the foot 55 of the link, while the wing 6 is in closed rest position. This is illustrated in Figure 8.

En cas d'ouverture de l'aile 6, par exemple sous l'effet d'une sollicitation latérale en torsion de la chaussure, le retour d'aile 6a entraíne vers l'arrière la pièce intermédiaire et la tête du tirant. La biellette 51 se déplace également vers l'arrière.In the case of wing 6 being opened, for example under the effect of a stress lateral in torsion of the shoe, the wing return 6a causes the rearward intermediate piece and the head of the tie rod. The link 51 also moves towards the rear.

En l'absence d'appui intense sur la plaque d'appui 23, c'est-à-dire dans la position reculée de la plaque de transmission 36, la pièce intermédiaire est en butée contre la butée 54 de la tête du tirant. Elle entraíne la tête du tirant directement dans son mouvement, ne formant avec elle qu'un bloc. In the absence of intense support on the support plate 23, that is to say in the retracted position of the transmission plate 36, the intermediate piece is in stop against stop 54 of the head of the tie rod. It trains the head of the tie rod directly in its movement, forming with it only a block.

En cas de sollicitation intense sur la plaque d'appui 23, combinée à une ouverture de l'aile 6, le pied de la biellette est bloqué par le plot 50. La biellette agit comme un levier amplificateur entre la pièce intermédiaire 53 et la tête 11 du tirant. Ceci est illustré en figure 9. Ainsi, pour atteindre l'angle d'ouverture de l'aile qui laisse échapper la chaussure, il est nécessaire de déplacer le tirant 12 sur une plus grande course qu'en l'absence de sollicitation intense sur la plaque d'appui 23.In the event of intense stress on the support plate 23, combined with a opening of the wing 6, the foot of the link is blocked by the stud 50. The link acts as an amplifier lever between the intermediate piece 53 and the head 11 of the tie rod. This is illustrated in Figure 9. Thus, to reach the opening angle of the wing which lets out the shoe, it is necessary to move the tie rod 12 on a more large stroke only in the absence of intense stress on the support plate 23.

La figure 10 montre la liaison entre l'aile 7 et le tirant. De ce côté, le retour d'aile 7a de l'aile 7 est en prise directe sur la tête 11 du tirant 12. Quelle que soit la position du plot 50, la force de rappel de l'aile 7 n'est pas modifiée.Figure 10 shows the connection between wing 7 and the tie rod. On this side, the return wing 7a of wing 7 is in direct engagement with the head 11 of the tie rod 12. Whatever the position of the pad 50, the return force of the wing 7 is not modified.

Il va de soi que l'autre élément de retenue d'une paire d'éléments avant présente une disposition inverse, c'est-à-dire en particulier une pièce intermédiaire et une biellette situées de l'autre côté du tirant, pour que ce soient les deux ailes intérieures des éléments qui présentent une force variable de résistance à l'ouverture. Tout moyen approprié de repérage de éléments de retenue ou des skis ou tout moyen détrompeur convient pour que les chaussures soient associées aux bons éléments de retenue.It goes without saying that the other retaining element of a pair of front elements has a reverse arrangement, that is to say in particular an intermediate part and a link located on the other side of the tie rod, so that these are the two wings internal elements which have a variable force of resistance to the opening. Any suitable means of locating retaining elements or skis or any coding means is suitable for the shoes to be associated with good restraints.

En résumé, en fonctionnement normal, c'est-à-dire en l'absence d'appui intense de l'arrière de la chaussure sur la plaque 23, les deux ailes de retenue nécessitent le même effort pour s'ouvrir, et, le cas échéant libérer la chaussure.In summary, in normal operation, that is to say in the absence of support intense from the back of the shoe on the plate 23, the two retaining wings require the same effort to open, and, if necessary, release the shoe.

En cas d'appui intense de l'une ou l'autre des chaussures, et notamment en sortie de virage, en phase de conduite, lorsque le skieur porte son poids sur l'arrière, l'aile de retenue située du côté intérieur du ski, où cet appui intense se produit, présente une force de résistance à l'ouverture qui est augmentée par rapport à l'autre aile, du fait de l'enfoncement de la plaque 23 et de l'avancement de la plaque de transmission 36 et du tiroir 38. Ceci est avantageux car le skieur peut solliciter davantage ses skis, en phase de conduite, en diminuant le risque de déclenchement intempestif du ski dont il sollicite l'aile intérieure.In case of intense support of one or the other of the shoes, and in particular in exit from a bend, during the driving phase, when the skier puts his weight on the rear, the retaining wing located on the inside of the ski, where this intense support product, has an opening resistance force which is increased by compared to the other wing, due to the depression of the plate 23 and the advancement transmission plate 36 and drawer 38. This is advantageous because the skier can use their skis more, while driving, by reducing the risk of untimely triggering of the ski which it requests the inner wing.

Selon une autre approche, le skieur baisse la dureté des éléments de retenue, c'est-à-dire diminue le seuil de sollicitation au-delà duquel l'élément de retenue libère la chaussure, sachant que dans les phases de conduite, par son appui arrière, il augmente momentanément la dureté des ailes intérieures de ses éléments de retenue.According to another approach, the skier lowers the hardness of the elements of restraint, i.e. decreases the stress threshold beyond which the restraint releases the shoe, knowing that in the driving phases, by its rear support, it temporarily increases the hardness of the inner wings of its retainers.

Une variante de mise en oeuvre de l'invention est illustrée en figures 11 et 12. Selon cette variante, la tête 59 du tirant 60 est équipée des deux côtés d'une biellette 61, 62 de même nature que la biellette 51 précédente, et d'une pièce intermédiaire 63, 64 semblable à la pièce intermédiaire 53. Il est à noter que les biellettes 61 et 62 et les pièces intermédiaires 63, 64 sont respectivement indépendantes l'une de l'autre. Dans le cas présent, la liaison de transmission est connectée aux deux chaínes de liaison des ailes au ressort, mais les éléments de connexion, c'est-à-dire les biellettes et/ou les pièces intermédiaires sont différents pour que la liaison de transmission active davantage l'une des liaisons que l'autre.An alternative embodiment of the invention is illustrated in FIGS. 11 and 12. According to this variant, the head 59 of the tie rod 60 is equipped on both sides with a rod 61, 62 of the same kind as the preceding rod 51, and of one piece intermediate 63, 64 similar to intermediate piece 53. It should be noted that the rods 61 and 62 and the intermediate parts 63, 64 are respectively independent of each other. In this case, the transmission link is connected to the two chains connecting the wings to the spring, but the elements of connection, i.e. the rods and / or the intermediate parts are different so that the transmission link activates one of the links more than the other.

Comme dans le cas précédent, l'appui de la chaussure sur l'arrière provoque l'avancement d'un plot qui est susceptible ici d'entraver le mouvement du pied des deux biellettes. Cependant, les biellettes amplifient de façon différente le mouvement du tirant.As in the previous case, pressing the shoe on the back causes the advancement of a stud which is likely here to impede the movement of the foot of the two links. However, the rods amplify differently the movement of the tie rod.

On a représenté dans les figures 11 et 12 le tirant 61 vu des deux côtés. Il est visible dans ces figures que les deux axes 65, 67 d'articulation de la biellette 61 à la tête 59 du tirant et la pièce intermédiaire 63 sont plus distants l'un de l'autre que les axes 66 et 68 d'articulation de la biellette 62. Dans ces conditions, la biellette 62 aura un rôle amplificateur plus faible que la biellette 61. La biellette 62 sera disposée du côté de l'aile extérieure, et la biellette 61 du côté de l'aile intérieure de l'élément de retenue.There is shown in Figures 11 and 12 the tie 61 seen from both sides. It is visible in these figures that the two axes 65, 67 of articulation of the rod 61 to the head 59 of the tie rod and the intermediate piece 63 are more distant from each other than the axes 66 and 68 of articulation of the link 62. Under these conditions, the link 62 will have a weaker amplifying role than the link 61. The link 62 will disposed on the side of the outer wing, and the rod 61 on the side of the inner wing of the retainer.

On peut obtenir le même effet par d'autres moyens, en jouant sur les bras de leviers de chacune des biellettes, par exemple en utilisant des biellettes de longueur différente.The same effect can be obtained by other means, by playing on the arms of levers of each of the links, for example by using different length.

Ainsi, en cas d'appui de la chaussure sur la plaque d'appui mobile, le seuil de déclenchement des deux ailes varie, celui de l'aile intérieure variant cependant davantage que celui de l'aile extérieure.Thus, if the boot is pressed on the movable support plate, the threshold of triggering of the two wings varies, that of the inner wing varying however more than that of the outer wing.

La figure 13 illustre une autre variante de mise en oeuvre de l'invention. Selon cette variante, l'effet de l'élément tiroir sur la ou les biellettes est neutralisé dans le cas où l'avant de la chaussure tend à solliciter la mâchoire vers le haut. Cette configuration correspond par exemple à une chute vers l'arrière du skieur.FIG. 13 illustrates another variant implementation of the invention. According to this variant, the effect of the drawer element on the link (s) is neutralized in the case where the front of the shoe tends to urge the jaw upwards. This configuration corresponds for example to a fall towards the rear of the skier.

La figure représente un élément tiroir en deux parties 70 et 71 réunies entre elles par un dispositif 72 à genouillère. Le dispositif à genouillère 72 comprend deux petits leviers réunis entre eux par une articulation centrale.The figure shows a drawer element in two parts 70 and 71 joined between them by a toggle device 72. The toggle joint device 72 includes two small levers joined together by a central articulation.

La plaque d'appui avant 73 sur laquelle l'avant de la chaussure repose est mobile verticalement. Par exemple, sa partie arrière est reliée à l'embase de l'élément de retenue par une sorte de charnière. De préférence, un moyen de rappel élastique relativement souple, par exemple un ressort 74 rappelle la plaque vers le haut.The front support plate 73 on which the front of the shoe rests is vertically movable. For example, its rear part is connected to the base of the retaining element by a kind of hinge. Preferably, a means of relatively flexible elastic return, for example a spring 74 recalls the plate to the top.

La partie avant de la plaque repose sur l'articulation de la genouillère.The front part of the plate rests on the knee joint.

Tant que l'appui de la chaussure sur la plaque est supérieure à une valeur déterminée, la genouillère 72 est aplatie. Le plot 77 est en position avancée et l'élément tiroir a alors le même fonctionnement par rapport à la biellette, ou le cas échéant aux biellettes, que l'élément tiroir précédent.As long as the support of the shoe on the plate is greater than a value determined, the knee pad 72 is flattened. The pad 77 is in the advanced position and the drawer element then has the same operation with respect to the link, or the case appropriate to the rods, as the previous drawer element.

Dans le cas d'une chute arrière, la charge de la chaussure sur la plaque d'appui 73 diminue, ce qui permet à la genouillère de se casser. Le plot 77 occupe alors une position plus reculée, et n'a aucune action sur la ou les biellettes. Le seuil de déclenchement des ailes ne peut plus varier, ou revient à sa valeur nominale s'il avait augmenté sous l'effet d'un déplacement vers l'avant de la plaque de transmission. Dès que la charge de la chaussure augmente, le plot 77 reprend sa position nominale de fonctionnement. Ainsi, l'effet de variation de la résistance à l'ouverture des ailes est neutralisé en cas de chute arrière.In the event of a rear fall, the load of the shoe on the plate support 73 decreases, allowing the toggle to break. The plot 77 occupies then a more remote position, and has no action on the link (s). The wings trigger point can no longer vary, or returns to its value nominal if it had increased due to a forward shift of the transmission plate. As soon as the load on the shoe increases, pad 77 returns to its nominal operating position. So the variation effect of the resistance to wing opening is neutralized in the event of a rear fall.

Les figures 14 et 15 sont relatives à un autre mode de construction de l'élément de retenue avant. Elles illustrent un élément de retenue 81 du type à corps tournant et mâchoire formant un ensemble monobloc avec le corps. Ainsi, l'élément 81 comprend une mâchoire 82 comprenant deux ailes de retenue latérale et formant avec le corps 83 un corps monobloc. Le corps est monté pivotant autour d'un pivot vertical cylindrique 84 porté par une embase 85 qui est prévue pour être rendue solidaire du ski par tout moyen approprié, par exemple des vis. Le pivot 84 porte sur l'avant un méplat 86 orienté transversalement par rapport à la direction longitudinale définie par l'élément de retenue. Un piston 87, guidé dans le corps, est repoussé par un ressort 88 contre le méplat 86. Lors d'un pivotement, le corps entraíne avec lui le piston 87 qui, au contact de l'un ou l'autre des bords latéraux du méplat, est forcé d'avancer en comprimant le ressort 88. Une telle construction est connue. Elle n'est pas limitative pour l'invention, et peut présenter des variantes, notamment au niveau du pivot et de la liaison de pivotement entre le pivot et le corps. Ainsi, dans le cas présent, les chaínes d'éléments de liaison entre chacune des ailes et le ressort comprennent la mâchoire, le corps, le pivot, et le méplat situé en avant du pivot, avec chacun de ses bords latéraux, contre lequel le piston s'appuie selon le sens de pivotement du corps. Chaque aile de la mâchoire est en fait associée à un bord du méplat qui est situé du côté opposé, c'est-à-dire du côté de l'autre aile par rapport à un plan vertical et longitudinal médian.Figures 14 and 15 relate to another mode of construction of the front retainer. They illustrate a retaining element 81 of the type to rotating body and jaw forming a one-piece assembly with the body. So, element 81 comprises a jaw 82 comprising two retaining wings lateral and forming with the body 83 a one-piece body. The body is pivotally mounted around a vertical cylindrical pivot 84 carried by a base 85 which is provided to be secured to the ski by any suitable means, for example screws. The pivot 84 carries on the front a flat 86 oriented transversely to the longitudinal direction defined by the retainer. A piston 87, guided in the body, is pushed back by a spring 88 against the flat 86. During pivoting, the body drives with it the piston 87 which, in contact with one or the other of the edges side of the flat, is forced to advance by compressing the spring 88. Such a construction is known. It is not limiting for the invention, and may have variants, in particular at the pivot and the pivot connection between the pivot and body. Thus, in this case, the chains of connecting elements between each of the wings and the spring includes the jaw, the body, the pivot, and the flat situated in front of the pivot, with each of its lateral edges, against which the piston rests in the direction of pivoting of the body. Each wing of the jaw is actually associated with an edge of the flat which is situated on the opposite side, that is to say on the side of the other wing with respect to a vertical and longitudinal median plane.

Comme cela est visible sur les figures, le pivot présente un évidement sur chacun des bords latéraux du méplat, c'est-à-dire que le méplat présente une largeur inférieure au diamètre du pivot. L'un de ces évidements est limité vers l'arrière par une baguette 90 qui s'étend le long du pivot. La baguette 90 est mobile, elle est portée par un élément tiroir 91 guidé en coulissement longitudinal par rapport à l'embase. Cet élément est de même type que l'élément tiroir 38 précédent, et, comme l'élément précédent, il est prévu pour être repoussé vers l'avant en cas de variation de l'appui de la chaussure du skieur sur un palpeur. En étant repoussé vers l'avant, l'élément tiroir 91 déplace la baguette 90, et place sa face avant sensiblement dans le prolongement de la face d'appui du méplat 86. Ceci revient à dire qu'en cas de déplacement vers l'avant de l'élément tiroir 91, le méplat se trouve prolongé latéralement de façon momentanée et d'un côté seulement. Au cas où le piston décrit ce côté du méplat pendant ce temps là, il se déplacera sur une amplitude plus grande, provoquant une plus grande compression du ressort, c'est-à-dire que le ressort opposera une résistance au pivotement du corps qui sera plus grande que celle qu'il oppose pour un pivotement du corps dans l'autre sens.As can be seen in the figures, the pivot has a recess on each of the lateral edges of the flat, that is to say that the flat has a width less than the diameter of the pivot. One of these recesses is limited to the rear by a rod 90 which extends along the pivot. Baguette 90 is mobile, it is carried by a drawer element 91 guided in longitudinal sliding relative to the base. This element is the same type as the drawer element 38 previous, and, like the previous element, it is intended to be pushed back to the front in case of variation in the support of the skier's shoe on a feeler. In being pushed forward, the drawer element 91 moves the rod 90, and places its front face substantially in the extension of the bearing face of the flat 86. This amounts to saying that in the event of the drawer element 91 moving forwards, the flat is momentarily extended laterally and on one side only. If the piston describes this side of the flat during this time, it will shift to a larger amplitude, causing greater compression of the spring, i.e. the spring will resist pivoting of the body which will be greater than that which it opposes for a body pivot in the other direction.

Comme dans le cas précédent, l'autre élément d'une paire d'éléments de retenue aurait une disposition inverse de la baguette, c'est-à-dire que la baguette 90 serait située de l'autre côté du plan longitudinal et vertical médian de l'élément de retenue. Les éléments de retenue de la paire présenteraient dans ce cas tous moyens appropriés mécaniques ou visuels ou autres pour assurer que l'élément de retenue droit est associé à la chaussure droite du skieur et l'élément gauche est associé à la chaussure gauche.As in the previous case, the other element of a pair of elements of retained would have a reverse arrangement of the rod, that is to say that the rod 90 would be located on the other side of the longitudinal and vertical median plane of the element of restraint. The pair retainers would in this case have all suitable mechanical or visual or other means to ensure that the element right retainer is associated with the skier's right shoe and the left element is associated with the left shoe.

Sur le même principe que ce qui a été décrit relativement aux figures 11 et 12, la figure 16 montre en variante un élément de retenue 92 avec un pivot 93 présentant un évidement latéral sur chacun des bords latéraux du méplat 96. Ces évidements sont limités par deux baguettes mobiles, 94 et 95, une de chaque côté du méplat 96, portées solidairement par un élément tiroir. L'une des baguettes, en l'occurrence, la baguette 94 dans la figure 16, présente un bord latéral plus émoussé que l'autre de façon que, en cas de position avancée du tiroir et des deux baguettes, l'augmentation de la force que le ressort oppose au pivotement du corps soit momentanément plus importante d'un côté que de l'autre. Dans la figure 15, l'élément tiroir et les deux baguettes sont représentés en position avancée.On the same principle as what has been described in relation to FIGS. 11 and 12, FIG. 16 shows a variant of a retaining element 92 with a pivot 93 having a lateral recess on each of the lateral edges of the flat 96. These recesses are limited by two movable rods, 94 and 95, one on each side flat 96, carried integrally by a drawer element. One of the chopsticks, in the occurrence, the rod 94 in FIG. 16, has a more lateral edge blunt than the other so that, in the case of the advanced position of the drawer and both rods, the increase in the force that the spring opposes to the pivoting of the body is momentarily more important on one side than on the other. In Figure 15, the drawer element and the two rods are shown in the advanced position.

Naturellement l'invention n'est pas limitée aux modes de réalisation décrits. Elle pourrait s'appliquer à des variantes de construction du mode de réalisation décrit. Elle pourrait également s'appliquer à d'autres constructions d'éléments de retenue, par exemple des éléments du type à corps fixe et mâchoire monobloc comprenant deux ailes reliées entre elles. D'autres constructions sont aussi possibles. Pour un élément de retenue de construction différente, la chaíne d'éléments de liaison entre une aile et le ressort est formée par l'ensemble des éléments qui relient l'aile au ressort, et qui sont activés en mouvement par le déplacement de l'aile en question.Naturally, the invention is not limited to the embodiments described. It could apply to construction variants of the embodiment described. It could also apply to other constructions of elements of retainer, for example elements of the fixed-body and one-piece jaw type comprising two wings connected to each other. Other constructions are also possible. For a retaining element of different construction, the chain of connecting elements between a wing and the spring is formed by all of the elements which connect the wing to the spring, and which are activated in movement by the displacement of the wing in question.

La plaque d'appui mobile, la liaison avec l'élément tiroir pourraient aussi être remplacées par un dispositif électronique. Par exemple, une jauge de contrainte évaluerait l'appui de la chaussure sur le ski. Au cas où un seuil déterminé serait dépassé, un circuit de traitement activerait un électro-aimant ou un autre dispositif susceptible de modifier le seuil de déclenchement de l'élément de retenue à la façon de ce qui a été décrit.The movable support plate, the connection with the drawer element could also be replaced by an electronic device. For example, a strain gauge would assess the support of the shoe on the ski. In case a determined threshold is exceeded, a processing circuit would activate an electromagnet or other device likely to modify the triggering threshold of the retaining element at the way of what has been described.

De plus, selon ce qui a été décrit, c'est la plaque d'appui arrière qui pilote le fonctionnement du dispositif. Ceci n'est pas limitatif, et on pourrait aussi piloter le dispositif de la même façon selon les variations d'appui de la plaque d'appui avant. In addition, according to what has been described, it is the rear support plate which controls the operation of the device. This is not limiting, and we could also pilot the device in the same way depending on the support variations of the front support plate.

Enfin, la liaison de transmission entre la plaque d'appui mobile et l'aile pourrait être prévue pour avoir un effet inverse, qui diminuerait la force de rappel appliquée par le ressort à l'aile, au lieu de l'augmenter.Finally, the transmission link between the movable support plate and the wing could be expected to have an opposite effect, which would decrease the restoring force applied by the spring to the wing, instead of increasing it.

Toutes ces variantes peuvent aussi être combinées entre elles.All these variants can also be combined with one another.

Claims (11)

  1. Element for retaining a boot on a glide board provided to release the boot in case of excessive stress, having a body (3), a retention jaw (5) borne by the body with two wings (6, 7), a spring (14) housed in the body (3), a series of connection elements (5a, 7a, 59, 60, 17) between each wing of the jaw and the spring provided so that the spring resists the outward displacement of either one of the wings of the jaw in the same way,
       a support plate (23) mobile along a vertical direction provided to receive support from one portion of the boot,
       a transmission link (36, 38, 50) activated by the motion of the mobile support plate, provided to modify the return force that the spring exerts against the movement of each of the wings,
       characterized in that the transmission link is connected to each of the series of link elements by various connection elements (61, 62, 63, 64) that are provided so that the transmission link modifies the return force exerted by the spring against the outward movement of one of the wings more than the return force exerted by the spring against the outward movement of the other wing.
  2. Element according to claim 1, where each of the wings is independently journalled about an axis borne by the body, where the series of connection elements has a wing return (6a, 7a) for each wing, a tie rod (59) with a head (60), characterized in that the connection elements of the transmission link have two independent intermediate elements (63, 64) that are inserted between the wing returns and the head (59) of the tie rod, and two connection rods (61, 62) mounted like levers between the head of the tie rod and each of the intermediate elements, each having a foot that extends downwardly.
  3. Element according to claim 2, characterized in that the connection rods (61, 62) are connected to the intermediate elements (63, 64) and to the head (59) of the tie rod by journal axes whose spacing is different.
  4. Retaining element according to claim 1, where each of the wings is borne by a body pivotably mounted about a pivot (93) that is fixedly connected to a base, and has a flat surface (96), where the series of connection elements for each wing has the body, the pivot (93) and the flat surface (96) with its lateral edge opposite the wing, characterized in that the elements for connecting the transmission link have two slender mobile rods (94, 95) housed in recesses located on each lateral edge of the pivot, one (94) of the slender rods itself having a lateral edge that is more blunted than the other slender rod.
  5. Element for retaining a boot on a glide plate provided to release the boot in case of excessive stress, having a body (3, 83), a retention jaw (5, 82) borne by the body having two wings (6, 7), a spring (14, 88) housed in the body (3, 83), a series of connection elements (6a, 7a, 11, 12, 17, 83, 84, 86) between each wing of the jaw and the spring, provided so that the spring resists the outward displacement of either one of the wings of the jaw in the same way,
       a support plate (23) mobile along a vertical direction provided to receive support from one portion of the boot,
       a transmission link (36, 38, 50) activated by the motion of the mobile support plate,
       characterized in that the transmission link (36, 38, 50) is connected by connection elements (51, 53, 90) to only one of the series of link elements between one of the wings (6) and the spring (14), and in that it is provided to only modify the return force exerted by the spring against the outward movement of said wing, without modifying the return force exerted by the spring against the outward movement of the other wing.
  6. Element according to claim 5, where each of the wings is independently journalled about an axis borne by the body, where the series of connection elements has a wing return (6a, 7a) for each wing, a tie rod (12) with a head (11), characterized in that the connection elements of the transmission link have an intermediate element (53) that is inserted between the wing return (6a) of one of the wings (6) and the head (11) of the tie rod, and a connection rod (51) mounted like a lever between the head of the tie rod and the intermediate element, and having a foot (55) that extends downwardly.
  7. Element according to claim 3 or 6, characterized in that the transmission link has a stud (50) mounted on a drawer element (38) that is slidably mobile and provided to hinder the movement of the foot (55) of the connection rod (51) or rods (61, 62) which is communicated by the movement of the head (11, 59) of the tie rod.
  8. Element according to claim 7, characterized in that the transmission link has a transmission plate (36) one of whose ends is in support against the vertical arm of a journalled tilting element (32).
  9. Element according to claim 7, characterized in that the sliding drawer element is made up of two parts (70, 71) that are connected to each other by a knuckle device (72), that the front support plate (73) associated to the retention element is mobile along a vertical direction, and that it rests on the central journal of the knuckle device (72).
  10. Element according to claim 5, where each of the wings is borne by a body (83) pivotably mounted about a pivot (84) that is fixedly connected to a base, and having a flat surface (86), where the series of connection elements for each wing has the body, the pivot (84) and the flat surface (86) with its lateral edge opposite the wing, characterized in that a slender mobile rod (90), fixedly connected to a drawer element (91), is housed in a recess located along a lateral edge of the flat surface (86).
  11. Assembly of front retention elements formed by a pair of elements, each of which is provided to retain the right and left boots of a skier, characterized in it has two front retention elements according to any of claims 1-10, with the connection elements being connected in a reverse manner to the series of connection elements between the wings and the springs.
EP97112890A 1996-09-13 1997-07-26 Toe piece binding for a safety sliding board Expired - Lifetime EP0829278B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9611357 1996-09-13
FR9611357A FR2753390B1 (en) 1996-09-13 1996-09-13 RETAINING ELEMENT OF THE FRONT OF A SHOE ON A SNOWBOARD AND FRONT ELEMENT ASSEMBLY

Publications (2)

Publication Number Publication Date
EP0829278A1 EP0829278A1 (en) 1998-03-18
EP0829278B1 true EP0829278B1 (en) 2003-04-02

Family

ID=9495839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97112890A Expired - Lifetime EP0829278B1 (en) 1996-09-13 1997-07-26 Toe piece binding for a safety sliding board

Country Status (4)

Country Link
EP (1) EP0829278B1 (en)
AT (1) ATE235936T1 (en)
DE (1) DE69720354T2 (en)
FR (1) FR2753390B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1503849A (en) * 1966-10-14 1967-12-01 Salomon & Fils F Unsymmetrical release device for ski bindings
FR2717705B1 (en) * 1994-03-24 1996-06-07 Frederic Paradis Front stop for alpine ski safety binding.
FR2718048B1 (en) * 1994-03-30 1996-05-31 Salomon Sa Element and assembly for retaining a shoe on a gliding board.
FR2727030B1 (en) * 1994-11-21 1997-01-24 Salomon Sa ASSEMBLY OF SHOE RETAINING ELEMENTS ON SLIDING BOARDS

Also Published As

Publication number Publication date
EP0829278A1 (en) 1998-03-18
DE69720354D1 (en) 2003-05-08
FR2753390A1 (en) 1998-03-20
ATE235936T1 (en) 2003-04-15
DE69720354T2 (en) 2004-02-12
FR2753390B1 (en) 1998-12-11

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