EP4292681A1 - Device for retaining a boot on a gliding board and gliding board comprising such a device - Google Patents

Abstract

Device for retaining (1) a shoe (5) on a gliding board (3) comprising: - a frame (11), - a longitudinal stopping element (13) comprising an indexing means (131) and a first actuation surface (1322), the longitudinal stopping element being mounted movable in translation relative to the chassis, in a substantially vertical direction, between two configuration positions:. an active position for which the indexing means is able to cooperate with complementary indexing means (20) and. an inactive position for which the indexing means does not cooperate with the complementary indexing means - an actuation means (14) comprising a first cam (141) capable of interacting with the first actuation surface (1322) of the longitudinal stopping element so as to cause the translation of the longitudinal stopping element towards its active position. The actuating means is mounted movable only in rotation relative to the chassis.

Description

The present invention relates to a device for retaining a shoe on a sliding board as well as a sliding machine comprising a sliding board, such as a cross-country ski or touring ski equipped with said retaining device. Such a retaining device is sometimes referred to as a “stopper,” “front stopper,” or “fastener.”

For the purposes of the present invention, a sliding machine is a piece of equipment on which a person stands when using this machine for practicing a sliding sport, while being attached by at least one of their shoes. on this machine.

In the field of board sports, more particularly in the field of cross-country skiing, it is advantageous to be able to adjust the longitudinal position of the skier's boot along the ski.

In the case of classic or alternative cross-country skiing, the ski is cambered and defines, under the boot, an area which, by default, is not in contact with the snow. This area constitutes a “wax chamber”. In this area, grip wax can be added to increase the grip of the ski on the snow in order to prevent the ski from rolling back, which allows effective pushing with the foot. By modifying the longitudinal position of a boot retaining device on the ski, it is possible to adjust the contact zone between the ski and the snow depending on the weight exerted by the skier, favoring sliding or skiing. hooks. When turning, the skier has to lift one ski to bring it back towards the other ski. In this phase, the lifted ski is connected to the skier only by the front end of the boot and it is important that the ski is correctly balanced. If the ski leans forward or backward, it can contact the snow, which can slow the skier down or throw them off balance. Adjusting the length of a device for retaining a boot on the ski therefore makes it possible to adjust the balance of the ski in this raised configuration.

In the case of a skating ski, we find a similar problem of balance when the ski is lifted to be brought towards the other ski in the so-called aerial phases. In addition, when the snow is sticky, the skier may want a slight imbalance towards the rear of their skis to raise the front tip by default and thus limit the risk of planting this tip in the snow when progressing on the slopes. These adjustment possibilities for a skating ski are also obtained by adjusting the longitudinal position of the shoe retaining device on the ski.

Adjusting the longitudinal position of a binding on a cross-country ski has been described in several patent applications. This function has also been integrated into certain bindings on the market.

For example, the document EP3511057 describes a retaining device for a cross-country ski boot whose longitudinal position is adjustable relative to a mounting plate fixed to the ski. The retaining device comprises a frame and a stopping element movable relative to said frame, in a transverse direction, between an active position for which the stopping element cooperates with a rack secured to a mounting plate and a position inactive for which the stopping element no longer cooperates with the rack. The stop element can be operated manually, directly by the user's finger, but can also be switched from its inactive position to its active position by means of a cam provided on the actuating lever of the holding mechanism of the shoe. So when the lever is lowered, it pushes the stop element into its active position and locks it. The actuating lever is mounted movable in rotation relative to a jaw movable in translation relative to the chassis. By being movable transversely, the stopping element can be designed to facilitate its manipulation from an inactive position to an active position or vice versa. However, this construction requires providing a suitable location for the kinematics of the stopping element. Thus, this induces a bulky dimensioning of the binding and, consequently, the addition of mass to the front of the binding. As a result, the positioning of the pivot point between the boot and the sliding machine relative to the balance point of the ski is shifted forward, which penalizes the performance of the ski. Furthermore, this construction does not allow actuation of the stop element by actuation means of the retaining device when the shoe holding mechanism is in a shoe release configuration. The use of an actuation means to act on the stopping element allows better ergonomics for adjusting the longitudinal position of the retaining device, particularly with regard to controlling the force to be applied to actuate the stopping element.

The aim of the invention is to propose an alternative and improved device for retaining a shoe on a sliding board.

One aim is in particular to propose a mechanism for adjusting the longitudinal position of a retaining device on a more compact sliding board allowing better balance of the sliding machine.

Another aim is to propose a mechanism for adjusting the longitudinal position of a retaining device on a sliding board that is easy to handle, and in particular without tools.

Another aim is to propose a mechanism for adjusting the longitudinal position of a retaining device on a gliding board, independent of the shoe holding mechanism, and having simple and reliable kinematics.

• un châssis configuré pour coopérer avec une interface solidaire de la planche de glisse de manière à pouvoir coulisser longitudinalement par rapport à la planche de glisse,
• un élément d'arrêt longitudinal comprenant un moyen d'indexation et une première surface d'actionnement, l'élément d'arrêt longitudinal étant porté par le châssis et monté mobile en translation par rapport au châssis, selon une direction sensiblement verticale, entre deux positions de configuration :
  • une position active pour laquelle le moyen d'indexation est apte à coopérer avec un moyen d'indexation complémentaire solidaires de la planche de glisse afin d'immobiliser le dispositif de retenue par rapport à la planche de glisse dans l'une de plusieurs positions longitudinales prédéterminées, et
  • une position inactive pour laquelle le moyen d'indexation ne coopère pas avec le moyen d'indexation complémentaire
• un moyen d'actionnement comprenant une première came apte à interagir avec la première surface d'actionnement de l'élément d'arrêt longitudinal de sorte à provoquer la translation de l'élément d'arrêt longitudinal vers sa position active lorsque le moyen d'actionnement est manipulé selon une direction, le moyen d'actionnement étant porté par le châssis et monté mobile par rapport au châssis entre
  • une position d'engagement pour laquelle la première came agit sur la première surface d'actionnement pour maintenir l'élément d'arrêt longitudinal dans sa position active et
  • une position de désengagement pour laquelle la première came n'agit pas sur la première surface d'actionnement pour maintenir l'élément d'arrêt longitudinal dans sa position active,

The invention proposes a device for retaining a shoe on a sliding board, the retaining device comprising:

• a chassis configured to cooperate with an interface secured to the gliding board so as to be able to slide longitudinally relative to the gliding board,
• a longitudinal stopping element comprising indexing means and a first actuation surface, the longitudinal stopping element being carried by the chassis and mounted movable in translation relative to the chassis, in a substantially vertical direction, between two configuration positions:
  • an active position for which the indexing means is capable of cooperating with complementary indexing means secured to the gliding board in order to immobilize the retaining device relative to the gliding board in one of several longitudinal positions predetermined, and
  • an inactive position for which the indexing means does not cooperate with the complementary indexing means
• an actuation means comprising a first cam capable of interacting with the first actuation surface of the longitudinal stopping element so as to cause the translation of the longitudinal stopping element towards its active position when the means of actuation is manipulated in one direction, the actuation means being carried by the chassis and mounted movable relative to the chassis between
  • an engagement position for which the first cam acts on the first actuation surface to maintain the longitudinal stop element in its active position and
  • a disengagement position for which the first cam does not act on the first actuation surface to maintain the longitudinal stop element in its active position,

The retaining device is characterized by the fact that the actuating means is mounted movable only in rotation relative to the chassis.

Thanks to the invention, the retaining device is compact, light and less bulky. The center of gravity of the binding can be brought back and thus not penalize the positioning of the pivot point between the boot and the sliding machine in relation to the balance point of the ski. The performance of the sliding machine can thus be improved. The actuation means can be ergonomic, being easy to handle, due to the fact that its kinematics are simple and direct in relation to the chassis. Its direct connection with the stopping element allows good operation of the longitudinal immobilization mechanism, with reliable movement of the stopping element, requiring little handling effort and operable without tools. Furthermore, the actuation means makes it possible to act on the stopping element independently of the shoe holding mechanism. This construction thus makes it possible to design an actuation means capable of being housed inside the actuation lever of the maintaining the shoe so as not to be exposed or accessible when the operating lever is lowered.

• Le châssis porte un mécanisme de maintien configuré pour coopérer avec un élément d'accrochage appartenant à la chaussure de sorte que la chaussure soit maintenue en position par rapport au châssis et en ce que le moyen d'actionnement est un composant distinct des composants du mécanisme de maintien. Selon un mode de réalisation, le mécanisme de maintien est conçu pour permettre la solidarisation de l'élément d'accrochage avec le dispositif de retenue tout en permettant la rotation de la chaussure autour d'un axe transversal Y1 au dispositif de retenue.
• Le mécanisme de maintien comprend un levier d'actionnement dimensionné pour recouvrir l'élément d'arrêt longitudinal et le moyen d'actionnement lorsque la chaussure est maintenue en position par rapport au châssis.
• Le moyen d'actionnement comprend une plaque de préhension et au moins une extension radiale s'étendant de la plaque vers l'axe de rotation du moyen d'actionnement, l'extension radiale portant la première came. Selon un mode de réalisation, le moyen d'actionnement comprend deux extensions radiales parallèles, espacées l'une de l'autre selon une direction transversale. Selon un mode de réalisation, le plan médian de la plaque de préhension et le plan médian du châssis sont sensiblement confondus, lorsque le dispositif de retenue est assemblé.
• L'élément d'arrêt longitudinal comprenant une deuxième surface d'actionnement et en ce que le moyen d'actionnement comprend une deuxième came apte à interagir avec la deuxième surface d'actionnement de l'élément d'arrêt longitudinal de sorte à provoquer la translation de l'élément d'arrêt longitudinal vers sa position inactive. Selon un mode de réalisation, la deuxième surface d'actionnement fait face à la première surface d'actionnement. Selon un mode de réalisation, au moins une extension radiale porte la deuxième came.
• Le moyen d'indexation est dimensionné et agencé de sorte que, lorsque l'élément d'arrêt longitudinal bascule dans sa position inactive, le moyen d'indexation s'escamote dans le châssis.
• La translation de l'élément d'arrêt longitudinal par rapport au châssis est guidée par la coopération entre un arbre pivot du moyen d'actionnement et une ouverture oblongue de l'élément d'arrêt longitudinal.
• Le déplacement de l'élément d'arrêt longitudinal est réalisé uniquement par l'action du moyen d'actionnement sans que l'élément d'arrêt longitudinal soit sollicité par un quelconque moyen élastique.
• L'élément d'arrêt longitudinal est couplé avec un moyen élastique intercalé entre l'élément d'arrêt longitudinal et le châssis ou une pièce solidaire du châssis de sorte à entrainer le déplacement de l'élément d'arrêt longitudinal de sa position active vers sa position inactive ou inversement.

According to advantageous but not obligatory aspects of the invention, such a retaining device can incorporate one or more of the following characteristics, taken in any technically admissible combination:

• The frame carries a holding mechanism configured to cooperate with a hooking element belonging to the shoe so that the shoe is held in position relative to the frame and in that the actuation means is a component distinct from the components of the mechanism maintenance. According to one embodiment, the holding mechanism is designed to allow the attachment of the attachment element to the retaining device while allowing the rotation of the shoe around a transverse axis Y1 to the retaining device.
• The holding mechanism includes an actuating lever dimensioned to cover the longitudinal stop member and the actuating means when the shoe is held in position relative to the frame.
• The actuating means comprises a gripping plate and at least one radial extension extending from the plate towards the axis of rotation of the actuating means, the radial extension carrying the first cam. According to one embodiment, the actuation means comprises two parallel radial extensions, spaced from one another in a transverse direction. According to one embodiment, the median plane of the gripping plate and the median plane of the chassis are substantially coincident, when the retaining device is assembled.
• The longitudinal stop element comprising a second actuation surface and in that the actuation means comprises a second cam capable of interacting with the second actuation surface of the longitudinal stop element so as to cause the translation of the longitudinal stop element towards its inactive position. According to one embodiment, the second actuation surface faces the first actuation surface. According to one embodiment, at least one radial extension carries the second cam.
• The indexing means is dimensioned and arranged so that, when the longitudinal stop element tilts into its inactive position, the indexing means retracts into the chassis.
• The translation of the longitudinal stopping element relative to the chassis is guided by the cooperation between a pivot shaft of the actuating means and an oblong opening of the longitudinal stopping element.
• The movement of the longitudinal stopping element is carried out solely by the action of the actuating means without the longitudinal stopping element being biased by any elastic means.
• The longitudinal stopping element is coupled with an elastic means interposed between the longitudinal stopping element and the chassis or a part integral with the chassis so as to cause the movement of the longitudinal stopping element from its active position towards its inactive position or vice versa.

The invention also relates to a sliding machine comprising a sliding board and a retaining device as defined above.

• La figure 1 est une vue en perspective par l'avant d'une partie d'un engin de glisse équipé d'un dispositif de retenue conformes à l'invention, dans une première configuration d'utilisation,
• La figure 2 est une vue éclatée du dispositif de retenue illustré en figure 1,
• La figure 3 est une vue de face du dispositif de retenue illustré en figure 1,
• La figure 4 est une vue en coupe selon IV-IV de la figure 3 de l'engin de glisse représenté illustré en figure 1, dans la première configuration d'utilisation,
• La figure 5 est une vue en coupe selon IV-IV de la figure 3 de l'engin de glisse représenté illustré en figure 1, dans une deuxième configuration d'utilisation,
• La figure 6 est une vue en coupe selon VI-VI de la figure 3 de l'engin de glisse représenté illustré en figure 1, dans la première configuration d'utilisation,
• La figure 7 est une vue en coupe selon VI-VI de la figure 3 de l'engin de glisse représenté illustré en figure 1, dans la deuxième configuration d'utilisation,
• La figure 8 est une vue de détail VIII de la figure 6,
• La figure 9 est une vue en coupe selon VI-VI de la figure 3 de l'engin de glisse représenté illustré en figure 1, dans la première configuration d'utilisation, levier d'actionnement rabattu,
• La figure 10 est une vue en perspective d'un élément d'arrêt longitudinal du dispositif de retenue selon l'invention,
• La figure 11 est une vue en perspective d'un moyen d'actionnement du dispositif de retenue selon l'invention.

Other characteristics and advantages of the invention will be better understood with the aid of the description which follows, with reference to the appended drawings illustrating, according to non-limiting embodiments, how the invention can be carried out, and in which :

• There figure 1 is a perspective view from the front of a part of a sliding machine equipped with a retaining device conforming to the invention, in a first configuration of use,
• There figure 2 is an exploded view of the retainer shown in figure 1 ,
• There Figure 3 is a front view of the retainer shown in figure 1 ,
• There Figure 4 is a sectional view according to IV-IV of the Figure 3 of the sliding machine represented illustrated in figure 1 , in the first configuration of use,
• There Figure 5 is a sectional view according to IV-IV of the Figure 3 of the sliding machine represented illustrated in figure 1 , in a second configuration of use,
• There Figure 6 is a sectional view according to VI-VI of the Figure 3 of the sliding machine represented illustrated in figure 1 , in the first configuration of use,
• There Figure 7 is a sectional view according to VI-VI of the Figure 3 of the sliding machine represented illustrated in figure 1 , in the second configuration of use,
• There figure 8 is a detail view VIII of the Figure 6 ,
• There Figure 9 is a sectional view according to VI-VI of the Figure 3 of the sliding machine represented illustrated in figure 1 , in the first configuration of use, actuation lever folded,
• There Figure 10 is a perspective view of a longitudinal stopping element of the retaining device according to the invention,
• There Figure 11 is a perspective view of an actuating means of the retaining device according to the invention.

In the following description, terms such as “horizontal”, “vertical”, “transverse”, “upper”, “lower”, “lateral”, “top”, “bottom”, “right” will be used. , “left”, “front”, “back”, “front”, “behind”. These terms must be interpreted relatively in relation to the normal position that the sliding machine occupies when the user uses it on a substantially flat track.

We will also use a mark whose rear/front direction corresponds to the X axis, the transverse or right/left direction corresponds to the Y axis and the vertical or bottom/top direction corresponds to the Z axis.

On the other hand, in the description, certain directions are qualified in relation to a frame of reference. In order not to limit the interpretation, use will be made of the term “significantly” in order to specify that the invention also relates to an angular variation of this direction of plus or minus 15° in relation to this qualification.

The invention relates to a retaining device 1 for a shoe 5, also called a binding, intended to be assembled at an interface 2, or mounting plate, secured to a gliding board or ski 3. According to one embodiment l The interface 2 and the sliding board 3 form a single, single piece. Alternatively, as illustrated below, the interface 2 is a separate component fixed on the upper face 32 of the sliding board 3, opposite its sliding surface 31. The sliding board 3 extends along a longitudinal axis X3 . The retaining device 1 is mounted with the possibility of sliding relative to the ski 3, along its longitudinal axis X3. The assembly composed of the retaining device 1, the interface 2 and the sliding board 3 forms a sliding machine 4.

The invention is more particularly aimed at a sliding machine intended for cross-country skiing or ski touring. Such a sliding machine is equipped with a retaining device designed to secure the front of the shoe to the sliding board. Thus, the retaining device does not secure the heel of the shoe to the gliding board. The skier can then freely lift his heel, without lifting the ski. The sliding machine may nevertheless include a guiding edge arranged so as to limit the lateral movement of the heel when it cooperates with the guiding edge, when the heel rests on the ski.

The interface 2 is fixed on the ski 3 so that the longitudinal axis X3 of the ski and the longitudinal axis X2 of the interface are parallel. In this example, the interface 2 comprises an insert 22 and a main body 21 comprising a central part 212 and two side wings 213 which extend on either side of the central part 212. The outer edge of each side wing 213 forms a side rail extending in a direction parallel to the longitudinal axis X2 of the interface. The main body 21 has an upper face 211. The assembly of the main body 21 on the ski 3 is carried out by any appropriate means. This can be by gluing or by screws. In its central part 212, the main body 21 comprises a housing 2121 intended to receive an insert 22. The insert 22, like the main body 21, is a component of the interface 2. The insert 22 comprises an upper surface 221 as well as a series of notches 222 extending from the upper surface 221. The sides of each notch are preferably inclined so that the base of the notch is thicker. The thickness E222 at the top is preferably greater than two millimeters. The height H222 of a notch is preferably greater than two millimeters. As we will see later, the series of notches 222 forms a complementary indexing means 20 intended to cooperate with an indexing means 131 of a longitudinal stopping element 13 so as to be able to immobilize the retaining device along the sliding board, in the one of several predetermined positions. When the insert 22 is assembled on the central part 212 of the main body 21, each notch 222 extends along a vertical axis Z, in the direction of the retaining device. All the notches 222 are aligned in a longitudinal direction X parallel to the longitudinal axis X2 of the mounting plate. In use, the notches 222 are heavily stressed because they are the ones which hold the retaining device in position, in the longitudinal direction. Also, it is preferable to choose a suitable material for these notches. The proposed construction consisting of adding a removable insert has several advantages. This allows, on the one hand, to change the part if the notching is damaged and, on the other hand, the use of more rigid material locally, where necessary, without penalizing the weight of the interface and therefore of the ski. For example, the insert may be reinforced polymer or metal while the rest of the interface is unfilled plastic. The insert can be removably mounted on the interface by any suitable means. This can be by clipping or using a screw. This solution can be transposed to any type of indexing of a system for adjusting the longitudinal position of a retaining device relative to a ski and is therefore not limited to the embodiment illustrated here. For example, the indexing means 131 and the complementary indexing means 20 can be produced by one or more pins cooperating with holes. The series of notches 222 can be replaced by a series of housings, notches, recesses corresponding to the gap between two notches. The notches are not necessarily rectilinear in a transverse direction.

According to one embodiment, the interface 2 comprises connection means making it possible to hold the insert 22 and the main body 21 together, in all directions, once the two parts are assembled. These connection means can be removable, to allow replacement of the insert if necessary. According to a variant, these connection means cannot be dismantled without damaging the interface.

Alternatively, the complementary indexing means 20 and the interface 2 form a single, single piece. For example, the notches 222 are made directly in the central part 212 of the main body 21 and not on an insert 22 attached. Advantageously, the notches 222 are made of a material other than that of the main body 21. In this case, the notches 222 are provided on an insert 22 which is overmolded to the main body 21. The assembly consisting of the main body 21 and the the overmolded insert 22 then forms the interface 2. As mentioned previously, the use of two different materials between the insert and the rest of the interface makes it possible to locally reinforce the interface, where this is necessary, for example, at the level of the transmission of longitudinal forces. Furthermore, this allows, for example, to use a material suitable for bonding the interface to the ski at the level of the contact zone between the interface and the ski, for example, the main body 21 of the interface. According to one embodiment, the overmolded insert 22 is made of reinforced polymer while the rest of the interface 2, namely the main body 21, can be made of unfilled polymer.

According to an embodiment mentioned previously, the interface 2 is glued to the upper face 32 of the gliding board 3. This can be achieved by separate gluing of the constituent parts of the interface, the insert 22 on the one hand and the main body 21 on the other hand. Alternatively, this can be achieved by simultaneous bonding of the constituent parts of the interface, either with a one-piece interface, the interface then being single-material or multi-material overmolded, or with a previously assembled interface, the insert then already being integral with the main body via means of connection.

The interface 2 is arranged between the sliding board 3 and the retaining device 1. It carries the complementary indexing 20.

According to the embodiment described, the retaining device 1 is a cross-country ski binding and comprises a frame 11, a mechanism 12 for holding in position a hooking element 51 belonging to the shoe 5, a longitudinal stop 13, an actuation means 14 of the longitudinal stop element and a return means 16 making it possible to bring the heel of the boot towards the ski.

The chassis 11 is designed to be assembled at the interface 2. It extends along a longitudinal axis X1 substantially parallel to the longitudinal axis X2 of the interface when the chassis is mounted on the interface. The chassis comprises a lower face 111 intended to face the upper face 211 of the interface 2. The lower face 111 is delimited laterally by two edges 112, extending along a vertical axis Z, in the direction of the interface, from the underside. Each rim 112 comprises an internal lateral groove 113 oriented in a longitudinal direction parallel to the longitudinal axis X1 of the chassis. The two internal side grooves 113 face each other. Each internal lateral groove 113 is intended to cooperate respectively with a rail formed by one of the lateral wings 213 of the interface 2 so as to guide the chassis in translation relative to the interface, in a longitudinal direction maintaining the relative position between the chassis and the interface in a Z direction, normal to the upper face of the interface. This cooperation thus defines a slide-type connection between the chassis and the interface ensuring the longitudinal sliding of the retaining device relative to the ski. Other longitudinal guidance solutions could be considered.

Conventionally, the chassis 11 carries, in its upper part, the mechanism 12 for holding in position a hooking element 51 belonging to the shoe 5. In the illustrated embodiment, the hooking element 51 is a transverse shaft integrated in a recess in the front of the sole 52 of the shoe 5, extending in a transverse direction Y5. In practice, shoe 5 can comply with technical education demands EP-A-0 913 102 and or EP-A-0 913 103 which can be referred to for further details. To secure the shoe with the retaining device, the holding mechanism 12 comprises a fixed jaw 121, a movable jaw 122, an actuating lever 123 and links 124. The operation is similar to that of the fastening described in the document FR-A-2638974 .

The fixed jaw 121 can be an attached part, fixed on the chassis 11. It can be made of metal or with a material adapted to resist friction and stresses between the fixed jaw and the hooking element 51 of the shoe. Alternatively, the fixed jaw 121 can be a portion of the frame 11. In this case, the fixed jaw and the frame form a unitary, one-piece part.

The movable jaw 122 is configured to move between an engaged position and a released position. When it is in its engaged position, the movable jaw 122 is able to cooperate with the fixed jaw 121 so as to form an interstitial space intended to receive the hooking element 51 as detailed below. This arrangement allows the attachment of the attachment element to be joined to the retaining device while allowing the rotation of the shoe around a transverse axis Y1 to the retaining device. When it is in its release position, as shown in figures 4 to 7 , the movable jaw 122 is spaced from the fixed jaw 121 so as to create an upper passage for the hooking element 51 so that it can disengage from the interstitial space defined previously. This configuration allows the attachment element to be separated from the retaining device.

In this example, when the movable jaw 122 moves from its release position to its engagement position, the movable jaw 122 approaches the fixed jaw 121 so as to substantially form, with the fixed jaw, a cylinder at the interior which can accommodate the hooking element 51 so that it can freely pivot around the axis Y1 of the formed cylinder. In this case, the axis Y5 of the hooking element 51 and the axis Y1 of the cylinder formed are substantially aligned. Thus, the fixed jaw 121 is arranged so that the hooking element 51 is positioned between the movable jaw 122 and the fixed jaw 121 when the shoe 5 is engaged with the retaining device 1. Conversely, when the movable jaw 122 moves from its engagement position to its release position, the movable jaw 122 moves away from the fixed jaw 121 so as to generate an opening between the two jaws through which the locking element can pass hooking 51. In this example, the movable jaw 122 is positioned in front of the fixed jaw 121 on the chassis 11.

The actuating lever 123 is in the form of a cover pivotally mounted on the body of the movable jaw 122 around a transverse axis Y123. Each side edge of the actuating lever 123 is connected to a front part 117 of the chassis 11 forming a yoke by a link 124. A first end of the link is rotatably mounted on the front part of the chassis, around a transverse axis Y124, parallel to the pivot axis Y123 of the actuation lever. A second end of the link is rotatably mounted on a lateral edge of the actuation lever, around a transverse axis Y124, parallel to the pivot axis Y123 of the actuation lever 123.

To tilt the movable jaw from its engagement position to its release position, or vice versa, the user will act on the actuation lever 123. By lowering the actuation lever 123, this causes the movement of the movable jaw 122 towards its engaged position. Conversely, by lifting it, the actuating lever causes the movement of the movable jaw to tilt it from the engaged position to the release position. In this example, when it is completely lowered, the actuating lever 123 is designed to come to bear against an upper front face 116 of the chassis 11. In this configuration, the movable jaw is in its engaged position.

In this example, this control device is designed to ensure locking of the movable jaw in the engaged position. Thus, when the actuating lever is completely raised, the movable jaw is in its release position. By lowering the actuating lever by a specific angle, the movable jaw is brought to its engaged position. Then, by continuing the rotation of the actuating lever until it comes to bear against an upper front face 116 of the chassis 11, the movable jaw is locked in its engaged position and can no longer move longitudinally, according to direction X, without action on the actuation lever.

The actuation lever 123 forms a cover integrating a lower recess 1231 designed to form with the upper front face 116 of the chassis 11 and a part of the body of the movable jaw 122, a substantially closed volume when the actuation lever 123 rests on the upper front face 116 of the chassis 11. Thus, in this configuration, the actuating lever 123 makes it possible to protect the elements housed in this cavity from external bad weather such as snow or ice. The links 124 are arranged to be housed in this cavity when the actuating lever 123 is lowered, that is to say, when the retaining device is engaged.

According to one embodiment, the return means 16 making it possible to bring the heel of the boot towards the ski is an elastic pad carried by the body of the movable jaw 122. The elastic pad 16 is designed to come to bear against a front face of the sole when the user lifts their heel. This type of reminder means is illustrated in the document FR-A-2638974 .

According to the invention, the retaining device comprises a longitudinal stopping element 13 comprising an indexing means 131 and a first actuation surface 1322. The longitudinal stopping element 13 is carried by the chassis 11. It is mounted movable in translation relative to the chassis, between two configuration positions. The first configuration position is an active position, shown in figures 4 , 6 , 8 and 9 , for which the indexing means 131 is able to cooperate with a complementary indexing means 20 secured to the gliding board in order to immobilize the retaining device relative to the gliding board in one of several longitudinal positions predetermined. The second configuration position is an inactive position, shown in figures 5 And 7 , for which the indexing means 131 does not cooperate with the complementary indexing means 20.

In this example, the longitudinal stop element 13 comprises a plate 132 having a lower surface 1321 and an upper surface 1322. The upper surface here corresponds to the first actuation surface 1322 mentioned previously.

The indexing means 131 extends from the lower surface 1321 of the plate. Here, the indexing means 131 forms two notches 1311 extending in a transverse direction Y, over the entire width of the plate. The sides of each notch 1311 are preferably inclined so that the base of the notch is thicker. This beveling associated with the beveling of the notches 222 of the insert 22 makes it possible to facilitate the installation and cooperation of the notches 1311, 222, in other words, between the indexing means 131 and the complementary indexing means 20. thickness E1311 at the top is preferably greater than two millimeters. The height H1311 of a notch is preferably greater than two millimeters. Alternatively, the indexing means 131 may comprise a single notch 1311 or more notches 1311. The notches may take other shapes or other dimensions.

The longitudinal immobilization of the retaining device relative to the gliding board is achieved thanks to the cooperation between the indexing means 131 of the longitudinal stopping element 13 and the complementary indexing means 20 of the interface 2 The indexing means 131 comprises at least one index, in this example, it is two notches 131. The complementary indexing means 20 comprises several housings for the index or indexes, in this example, the housing corresponds to the interstitial space between two successive notches 222 of the insert 22. The housings are aligned in a longitudinal direction Thus, each housing defines a predetermined longitudinal position.

In addition, to facilitate adjustment of the longitudinal position of the retaining device, the chassis may comprise one or more marks intended to cooperate respectively with one or more graduations provided on the upper surface of the interface. Thus, the user has a visual cue making it possible to determine the longitudinal position exact chassis relative to the interface. Other embodiments of this visual indicator can be considered.

In its upper part, the longitudinal stopping element 13 comprises a central rib 133, of thickness E133, between two lateral faces 1331, the central rib extending from the first actuation surface 1322, along a median sagittal plane XZ. Thus, the central rib divides the first actuation surface 1322 into two lateral parts arranged on either side of the central rib. The central rib includes an oblong opening 1332 passing through, in the direction of its thickness. The oblong opening 1332 thus opens respectively onto each side face 1331 of the central rib. The oblong opening 1332 is oriented in a vertical direction Z. The central rib also comprises a vertical flat front surface 1333 extending substantially over the entire height of the central rib. Furthermore, the central rib comprises two upper extensions 134. Each of these extensions 134 extends respectively from the upper part of a side face 1331 of the central rib. Each extension 134 then extends in a transverse direction Y, over a height H134 preferably greater than two millimeters. Each extension 134 has a lower surface 1341, facing the first actuation surface 1322. Thus, the lower surface 1341 is positioned above the first actuation surface 1322. These two lower surfaces 1341 of the extensions 134 form a second actuation surface 1341. Thus, the projection on a frontal plane YZ of the subassembly composed of the plate 132, the central rib 133 and its two extensions 134 substantially forms a capital "i" (like the section of a beam IPN or IPE).

According to the invention, the longitudinal stop element 13 is movable in translation in a substantially vertical direction Z. Thus, when the longitudinal stop element 13 is in its active position, the indexing means 131, here the notches 1311, is designed to project from the lower face 111 of the chassis 11. Conversely, when the longitudinal stop element 13 is in its inactive position, the indexing means 131, here the notches 1311, is designed to be flush with or set back from the lower face 111 of the chassis 11. In other words, the indexing means 131 is dimensioned and arranged so that, when the longitudinal stop element 13 tilts into its inactive position, the means indexing mechanism 131 retracts into the chassis, it rises to no longer protrude from the lower face 111 of the chassis 11. Thus, the chassis 11 can slide more freely along the interface 2. With an indexing means 131 retractable, the retaining device is compatible with an optimized interface, having a low thickness. This makes it possible to lighten the sliding machine, to have a more flexible interface which adapts better to the camber of the ski. The performance of the sliding machine is improved. Contrary to the prior art cited, this construction no longer requires a groove in the front part of the interface, for the passage of the stopping element, because, here, the stopping element does not is more likely to interfere with part of the interface as the chassis slides along the interface. However, due to the exposure of this groove, it can thus be damaged or dirty, which can hinder the translation of the chassis during its assembly or disassembly with the interface. This groove is also a source of water or snow entering the stopping element, which can block its kinematics, particularly if the water freezes or the snow settles. Furthermore, this solution makes it possible to protect the indexing means 131 when handling the unmounted fastener when the longitudinal stopping element is in its inactive position.

In this example, the frame comprises a through opening 114 in the height direction, in a direction Z, opening on one side onto the lower face 111 of the frame and on the other side onto an upper face 116 of the frame. The through opening 114 is intended to accommodate the longitudinal stopping element 13, and more particularly, to guide the vertical translation of the longitudinal stopping element 13, at the level of its plate 132. Consequently, the dimensions of the peripheral edges of the through opening 114 correspond substantially to the dimensions of the peripheral edges of the plate 132 of the longitudinal stopping element 13, except for operating clearance. The peripheral edges of the through opening 114 constitute a guiding means. The peripheral edges of the plate 132 of the longitudinal stop element 13 constitute a complementary guiding means. This guide means is thus able to cooperate with the complementary guide means so as to guide the translation of the longitudinal stop element 13 relative to the chassis 11. To further improve the guidance and avoid the tilting of the element d longitudinal stop 13 when it moves, the chassis 11 may comprise upper vertical extensions 115 extending upwards from the upper face 116 of the chassis 11. These upper vertical extensions 115 comprise a face or a generatrix substantially in the same plane as one of the peripheral edges of the through opening 114. These extensions 115 are able to cooperate with the peripheral edges of the plate 132 or the vertical plane front surface 1333 of the longitudinal stop element 13 so as to guide the translation of the longitudinal stop element 13 relative to the chassis 11. These extensions 115 also constitute a guiding means, as defined previously. Likewise, the vertical flat front surface 1333 of the longitudinal stop element 13 also constitutes a complementary guiding means, as defined previously.

According to the invention, the retaining device comprises an actuation means 14 designed and arranged to interact with the longitudinal stop element 13. The actuation means 14 is carried by the chassis 11. It comprises a first cam 141 capable of interacting with the first actuation surface 1322 of the longitudinal stop element 13 so as to cause the translation of the longitudinal stop element 13 towards its active position when the actuation means 14 is manipulated according to a direction. The actuation means 13 is mounted movable relative to the chassis 11 between an engagement position for which the first cam 141 acts on the first actuation surface 1322 to maintain the longitudinal stop element 13 in its active position and a disengagement position for which the first cam 141 does not act on the first actuation surface 1322 to maintain the longitudinal stop element 13 in its active position.

According to the invention, the actuating means 14 is mounted movable only in rotation relative to the chassis 11 around an axis of rotation Y14 substantially transverse to the chassis 11. The use of a pivoting lever is usual for this type of fixation. The kinematics are simple and are similar to those of the actuation lever 123 of the shoe holding mechanism 12, which makes it ergonomic.

According to one embodiment, the actuating means 14 comprises a gripping plate 143 and at least one radial extension 144 extending from the plate towards the axis of rotation Y14 of the actuating means 14. The radial extension 144 carries the first cam 141.

In this example, the gripping plate 143 comprises a lower surface 1431 and an upper surface 1432, provided for manipulating the actuating means 14. Thus, with his finger, the user will press on the upper surface 1432 to tilt the actuation means 14 towards its engagement position illustrated in figures 4 , 6 , 8 and 9 . Conversely, the user will press on the lower surface 1431 to tilt the actuation means 14 towards its disengagement position illustrated in figures 5 And 7 . Here, the gripping plate 143 is extended at one edge by two parallel extensions 144, spaced from one another, in a transverse direction Y. Thus, a central recess 1442 is created between the two radial extensions 144 The end of each radial extension 144 comprises a hole 1441 passing transversely, in the direction of the thickness of the extension, in a direction Y. These two through holes 1441 have substantially the same diameter and are substantially aligned on an axis transverse Y14 corresponding to the axis of rotation of the actuating means. These two through holes 1441 are intended to receive a pivot shaft 15 mounted on a front part 117 of the chassis 11 forming a yoke. The two walls 1171 of the yoke extend upwards from the upper face 116 of the chassis 11. They are arranged and spaced apart from each other so that the two radial extensions 144 can be housed between them. this. The end of each radial extension 144 also comprises, in its lower part, the first cam 141, and in its upper part, a second cam 142. The dimensioning of the through hole 1441, of the first cam 141 and of the second cam 142 is identical for the two radial extensions 144. The projection of the first 141 and second cams 142 of a radial extension 144a on the median sagittal plane the other radial extension 144b on the sagittal plane median XZ of the actuating means 14. When the actuating means 14 is assembled to the chassis 11, the median plane XZ143 of the gripping plate 143 and the median plane XZ11 of the chassis 11 are substantially coincident.

The frame 11, the longitudinal stopping element 13 and the actuating means 14 are dimensioned and arranged so that the actuating means 14 can interact with the longitudinal stopping element 13 so as to move the element longitudinal stop 13 relative to the chassis 11 in a vertical translation Y. On the one hand, this arrangement is provided so that the first cam 141 of the actuation means 14 is able to interact with the first actuation surface 1322 of the longitudinal stop element 13 so as to cause the translation of the longitudinal stop element 13 towards its active position. On the other hand, this arrangement is provided so that the second cam 142 of the actuation means 13 is able to interact with the second actuation surface 1341 of the longitudinal stopping element 13 so as to cause the translation of the longitudinal stop element 13 towards its inactive position.

Thus, when the user lowers the actuation means 14, the first cam 141 comes into contact with the first actuation surface 1322 then pushes the longitudinal stop element 13 towards its active position. During this phase, the second cam 142 moves away from the second actuation surface 1341 so as to no longer be in contact. In this configuration, the gripping plate 143 comes into contact with the upper front face 116 of the chassis 11. Lowering the actuating means 14 consists of rotating the actuating means 14 around its axis of rotation Y14, in a sense of engagement, to make it switch from its disengagement position to its engagement position. Conversely, when the user raises the actuation means 14, the second cam 142 comes into contact with the second actuation surface 1341 then pushes the longitudinal stop element 13 towards its inactive position. During this phase, the first cam 141 moves away from the first actuation surface 1322 so as to no longer be in contact.

Thanks to this kinematics, the actuating means 14 acts directly, via the cams 141, 142, on the longitudinal stopping element 13. This makes it possible to exert a balanced effort, with good efficiency, on the means of actuation 14 which makes it possible to actuate the longitudinal stopping element 13, without excessive effort, even if it is stuck by blocks of snow, ice or the like. The operation of the longitudinal adjustment mechanism is more reliable, whether locking or unlocking it.

Furthermore, the first cam 141 and the first actuation surface 1322 are dimensioned and arranged so that, when the longitudinal stop element 13 is in its active position and the actuation means 14 is in its position d engagement, an action on the longitudinal stop element 13 to tilt it towards its inactive position causes the rotation of the actuating means 14 in its direction of engagement. However, when it is in its engaged position, the actuation means 14 abuts against the upper face front 116 of the chassis 11. Consequently, the rotation of the actuating means 14 blocked in this direction of rotation. The design therefore allows locking of the longitudinal stop element 13 in its active position. The longitudinal stopping element cannot therefore switch to its inactive position by direct action on the longitudinal stopping element. This change of configuration is only possible via the actuation means 14. To obtain this characteristic, these parts are designed so that, when the longitudinal stop element 13 is in its active position and the actuation means 14 is in its engagement position, the direction N normal to the contact line between the first cam and the first actuation surface is distant from the axis of rotation Y14 of the actuation means 14 so that a vertical force , from bottom to top, exerted on the longitudinal stop element 13 causes the rotation of the actuating means 14 in its direction of engagement. Here, the direction N is offset towards the rear relative to the axis of rotation Y14 of the actuating means 14.

In this example, the through opening 114 of the frame 11 is positioned between the walls 1171 of the yoke 117.

In this example, the pivot shaft 15, assembled to the yoke 117 of the chassis 11, passes through the through holes 1441 of the radial extensions 144 of the actuating means 14 but also through the oblong opening 1332 of the central rib 133 of the longitudinal stop element 13 so that, when the longitudinal stop element 13 moves vertically, the pivot shaft 15 moves along the oblong opening 1332. Thus, the pivot shaft 15 constitutes also a guiding means, as defined previously. Likewise, the oblong opening 1332 also constitutes a complementary guiding means, as defined previously. The use of the same pivot shaft 15 for the assembly of several components of the retaining device, and more particularly of the actuating means 14 and the longitudinal stopping element 13, contributes to the compactness of the retaining device .

In this example, the pivot shaft 15, assembled to the yoke 115 of the chassis 11, passes through oblong holes 1221 provided on front extensions of the body of the movable jaw 122. These oblong holes 1221 pass through along a transverse axis Y and extend along an axis X, so as to guide the longitudinal translation of the movable jaw. On the other hand, each first end of the links 124 of the holding mechanism 12 is rotatably mounted on this pivot shaft 15 and therefore around a transverse axis Y124 positioned in the front part 117 of the chassis 11 as indicated previously. The second end of the links 124 is rotatably mounted on a side edge of the actuating lever 123 of the holding mechanism 12. This solution makes it possible to have a compact and economical construction, with a reduced number of parts. Here, the pivot shaft 15 performs several functions, the pivot axis Y14 of the actuating means 14, the guidance vertical of the longitudinal stop element 13, the longitudinal guide of the movable jaw 122, the axis of rotation Y124 of the links 124.

In this example, the frame 11, the actuating lever 123 of the holding mechanism 12, the longitudinal stop element 13 and the actuation means 14 are dimensioned and arranged so that the longitudinal stop element 13 and the actuation means 14 can be housed inside a recess 1231 provided inside the actuation lever 123 of the holding mechanism 12 when the latter is lowered to come against the upper face 116 of the chassis 11. Thus, the actuating lever 123 is dimensioned to cover the longitudinal stop element 13 and the actuation means 14 when the shoe is held in position relative to the chassis. In this configuration, the actuation means 14 is in its engaged position. This construction makes it possible to protect the longitudinal stopping element 13 and the actuating means 14 from bad weather when the user is skiing, which improves the reliability of the longitudinal adjustment mechanism. In fact, we limit the risk of blocking the mechanism by blocks of snow, ice or the like. In addition, the actuation lever 123 also protects the mechanism against the risk of involuntary manipulation of the actuation means 14. Indeed, by being inaccessible when the shoe is connected to the holding mechanism, the actuation means cannot be manipulated. There is therefore no risk that the user or an external element, a ski, a shoe, a branch or the like will involuntarily activate the actuating means.

Advantageously, the actuation lever 123 and the actuation means 14 are dimensioned and arranged so that the actuation lever 123 can cooperate with the actuation means 14 so that when the user lowers the actuation lever 123 , this causes the actuation means 14 to tilt towards its engagement position and when the actuation lever 123 is in contact against the upper face 116 of the chassis 11, the actuation means 14 is in its position of commitment. This solution makes the practice safer because the user is then sure of having a locked longitudinal position when the shoe is connected to the holding mechanism. In this example, the lowering of the actuating lever 123 is obtained by the contact between an internal face 1232 of the recess 1231 and the upper surface 1432 of the gripping plate 143.

Advantageously, the actuation lever 123 and the longitudinal stop element 13 are dimensioned and arranged so that, when the actuation lever 123 is lowered (engagement position), an internal surface 1232 of the recess 1231 is flush with an upper surface 135 of the longitudinal stop element 13 so that the movement of the longitudinal stop element 13 from its active position to its active position is blocked by the contact between the upper surface 135 of the longitudinal stop 13 and the internal surface 1232 of the recess 1231.

In this example, the longitudinal stop element 13 is actuated by an actuation means 14 independent of the holding mechanism 12. This construction makes the longitudinal adjustment mechanism more reliable due to the fact that it does not depend on the state of the holding mechanism. The user can take off the sliding machine without risk of losing the longitudinal adjustment of its binding.

In this example, the central rib 133 of the stopping element 13 is housed inside the central recess 1442 defined by the radial extensions 144 of the actuating means 14. This arrangement contributes to the compactness of the device. detention. Furthermore, the central rib 133 of the stopping element 13 is also housed between the two walls 1171 of the yoke 117 of the chassis 11, just like the radial extensions 144 of the actuating means 14. This arrangement also contributes to the compactness of the retaining device.

According to one embodiment, the retaining device is directly fixed to the gliding board, without a separate interface part. In this case, the upper face of the ski integrates the elements allowing the assembly of the retaining device on the ski.

We can consider other embodiments of the mechanism for maintaining in position a hooking element belonging to the shoe. For example, the movable jaw may be positioned rearward on the retainer relative to the fixed jaw. The holding mechanism may not have a fixed jaw. For example, the movable jaw can be made by two transversely movable points, arranged symmetrically with respect to the longitudinal median plane of the ski, each point being able to cooperate with a housing provided on a lateral edge of the front of the sole of the shoe . Such a construction is illustrated, for example, in the document EP-A-0199098 . Likewise, other actuating member solutions can be considered. It can be a rotary button or a push button.

According to the embodiments described above, the movement of the longitudinal stop element 13 is carried out solely by the action of the actuating means 14 without the longitudinal stop element 13 being biased by any elastic means.

According to one embodiment, the longitudinal stopping element 13 is coupled with an elastic means interposed between the longitudinal stopping element and the chassis or a part integral with the chassis so as to cause the movement of the blocking element. longitudinal stop from its active position to its inactive position. In this case, the actuating means makes it possible to maintain the longitudinal stop element in its active position. There would no longer be any need for a second cam. Indeed, as soon as the first cam no longer cooperates with the first actuation surface, the elastic means would make it possible to bring the longitudinal stopping element towards its inactive position. It is preferable to provide a stop for the longitudinal stopping element to limit its movement when it moves away from its active position. The inactive position would thus correspond to the position of the longitudinal stopping element when it reaches the stop. This construction makes it easier to disengage the indexing means with the complementary indexing means, this reduces the risk of blocking. Additionally, this allows for a stable disengaged configuration of the longitudinal stop member when moving the retainer during adjustment.

According to one embodiment, the longitudinal stopping element 13 is coupled with an elastic means interposed between the longitudinal stopping element and the chassis or a part integral with the chassis so as to cause the movement of the blocking element. longitudinal stop from its inactive position to its active position. In this case, the actuating means serves to disengage the longitudinal stop element from its active position. There would no longer be any need for a first cam. The construction would be similar to that described previously with the difference that the actuation means would not have a first cam and the first actuation surface could serve as a support for the elastic means (other alternative solutions could be envisaged for positioning the elastic means). Indeed, as soon as the second cam no longer cooperates with the second actuation surface, the elastic means would make it possible to bring the longitudinal stopping element towards its active position. It is preferable to provide a stop for the longitudinal stopping element to limit its movement when it moves away from its inactive position. The active position would thus correspond to the position of the longitudinal stopping element when it reaches the stop. This construction makes it easier to engage the indexing means with the complementary indexing means. In addition, this makes it possible to have a stable engaged configuration of the longitudinal stop element when one is no longer in an adjustment configuration. This secures the adjustment, if the actuating means is no longer operational, we are more certain that the longitudinal position of the retaining device is locked. Alternatively, the device comprises such an elastic means and an actuation means provided with a first cam. In this case, the cam would lock the longitudinal stop element in its active position.

The invention is not limited to these embodiments. It is possible to combine these embodiments.

The invention is not limited to the embodiments previously described but extends to all the embodiments covered by the appended claims.

Nomenclature

1. 1- Restraint device
   • 11- Chassis
     • 111- Underside
     • 112- Ledge
     • 113- Internal side groove
     • 114- Through opening
     • 115- Vertical extension
     • 116- Upper face
     • 117- Screed
       1171- Wall
   • 12- Holding mechanism
     • 121- Fixed jaw
     • 122- Movable jaw
       1221- Oblong hole
     • 123- Actuation lever
       • 1231- Recess
       • 1232- Internal surface
     • 124- Connecting rod
   • 13- Longitudinal stop element
     • 131- Means of indexing
       1311- Notch
     • 132- Plate
       • 1321- Lower surface
       • 1322- Upper surface / First actuation surface
     • 133- Central rib
       • 1331- Side face
       • 1332- Oblong opening
       • 1333- Anterior surface
     • 134- Upper extension
       1341- Lower surface / Second actuation surface
     • 135- Upper surface
   • 14- Means of actuation
     • 141- First cam
     • 142- Second cam
     • 143- Grip plate
       • 1431- Lower surface
       • 1432- Upper surface
     • 144- Radial extension
       • 1441- Through hole
       • 1442- Central recess
   • 15- Pivot shaft
   • 16- Means of reminder
2. 2- Interface
   • 20- Complementary indexing means
   • 21- Main body
     • 211- Upper side
     • 212- Central part
       2121- Housing
     • 213- Side wing
   • 22- Insert
     • 221- Upper side
     • 222- Notch
3. 3- Sliding board
   • 31- Sliding surface
   • 32- Upper surface
4. 4- Sliding machine
5. 5- Shoe
   • 51- Hooking element
   • 52- Sole

Claims (15)

Retaining device (1) for a shoe (5) on a sliding board (3), the retaining device comprising: - a chassis (11) configured to cooperate with an interface (2) secured to the gliding board so as to be able to slide longitudinally relative to the gliding board, - a longitudinal stopping element (13) comprising indexing means (131) and a first actuation surface (1322), the longitudinal stopping element being carried by the chassis and mounted movable in translation relative to the chassis, in a substantially vertical direction, between two configuration positions: . an active position for which the indexing means is able to cooperate with complementary indexing means (20) secured to the gliding board in order to immobilize the retaining device relative to the gliding board in one of several predetermined longitudinal positions, and . an inactive position for which the indexing means does not cooperate with the complementary indexing means - an actuation means (14) comprising a first cam (141) capable of interacting with the first actuation surface (1322) of the longitudinal stopping element so as to cause the translation of the stopping element longitudinal towards its active position when the actuating means is manipulated in one direction, the actuating means being carried by the chassis and mounted movable relative to the chassis between . an engagement position for which the first cam acts on the first actuation surface to maintain the longitudinal stop element in its active position and . a disengagement position for which the first cam does not act on the first actuation surface to maintain the longitudinal stop element in its active position, characterized in that
the actuating means is mounted movable only in rotation relative to the chassis. Retaining device (1) according to claim 1, characterized in that the frame carries a holding mechanism (12) configured to cooperate with a hooking element belonging to the shoe so that the shoe is held in position relative to the chassis and in that the actuation means is a separate component from the components of the holding mechanism. Retaining device (1) according to the preceding claim, characterized in that the holding mechanism (12) is designed to allow the attachment of the attachment element to the retaining device while allowing the rotation of the shoe around 'a transverse axis (Y1) to the retaining device. Retaining device (1) according to one of the two preceding claims, characterized in that the holding mechanism comprises an actuating lever (123) dimensioned to cover the longitudinal stopping element and the actuating means when the shoe is held in position relative to the frame. Retaining device (1) according to one of the preceding claims, characterized in that the actuation means comprises a gripping plate (143) and at least one radial extension (144) extending from the plate towards the axis rotation (Y14) of the actuating means, the radial extension carrying the first cam. Retaining device (1) according to the preceding claim, characterized in that it comprises two parallel radial extensions (144), spaced from one another in a transverse direction. Retaining device (1) according to one of the two preceding claims, characterized in that the median plane (XZ143) of the gripping plate and the median plane (XZ11) of the frame are substantially coincident, when the retaining device is assembled . Retaining device (1) according to one of the preceding claims, characterized in that the longitudinal stopping element (13) comprises a second actuating surface (1341) and in that the actuating means (14) comprises a second cam (142) capable of interacting with the second actuation surface of the longitudinal stop element so as to cause the translation of the longitudinal stop element towards its inactive position. Retaining device (1) according to the preceding claim, characterized in that the second actuation surface (1341) faces the first actuation surface (1322). Retaining device (1) according to one of the two preceding claims combined with one of claims 5 to 7, characterized in that the at least one radial extension (144) carries the second cam. Retaining device (1) according to one of the preceding claims characterized in that the indexing means (131) is dimensioned and arranged so that, when the longitudinal stopping element tilts into its inactive position, the means of The indexing retracts into the chassis. Retaining device (1) according to one of the preceding claims characterized in that the translation of the longitudinal stopping element (13) relative to the chassis (11) is guided by the cooperation between a pivot shaft (15) of the actuating means (14) and an oblong opening (1332) of the longitudinal stopping element (13). Retaining device (1) according to one of the preceding claims characterized in that the movement of the longitudinal stopping element (13) is carried out solely by the action of the actuating means (14) without the element longitudinal stop (13) is urged by any elastic means. Retaining device (1) according to one of claims 1 to 13 characterized in that the longitudinal stopping element (13) is coupled with an elastic means interposed between the longitudinal stopping element and the chassis or a part secured to the chassis so as to cause the movement of the longitudinal stopping element from its active position to its inactive position or vice versa. Sliding machine (4) comprising a sliding board and a retaining device according to one of the preceding claims.

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