Device for retaining a boot on a gliding board and gliding board comprising such a device

Abstract

A retention device (1) for a shoe (5) on a ski board (3) comprising: - a frame (11), - a longitudinal stop element (13) including an indexing means (131) and a first actuating surface (1322), the longitudinal stop element being mounted to move in translation relative to the frame, in a substantially vertical direction, between two configuration positions: . an active position in which the indexing means is able to cooperate with a complementary indexing means (20) and . an inactive position in which the indexing means does not cooperate with the complementary indexing means - an actuating means (14) including a first cam (141) able to interact with the first actuating surface (1322) of the longitudinal stop element so as to cause the longitudinal stop element to move towards its active position. The actuating means is mounted to move only in rotation relative to the frame.

Description

[0001] The present invention relates to a device for retaining a shoe on a ski board, as well as to a skiing device comprising a ski board, such as cross-country or touring skis equipped with said retention device. Such a retention device is sometimes called a "toe stop," "front stop," or "binding."

[0002] For the purposes of this invention, a sliding device is equipment on which a person stands when using this device for the practice of a sliding sport, while being attached by at least one of their shoes to this device.

[0003] In the field of sliding 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.

[0004] In classic or traditional cross-country skiing, the ski is cambered, creating a zone under the boot that, by default, is not in contact with the snow. This zone acts as a "wax chamber." Grip wax can be applied to this area to increase the ski's traction on the snow, preventing it from slipping backward and allowing for efficient propulsion with the foot. By adjusting the longitudinal position of a binding on the ski, the contact area between the ski and the snow can be modified according to the skier's weight, prioritizing either glide or grip. When turning, the skier lifts one ski to bring it towards the other. During this phase, the lifted ski is connected to the skier only by the front of the boot, making it crucial that the ski is properly balanced.If the ski leans forward or backward, it can touch the snow, which can slow the skier down or cause them to lose their balance. Adjusting the length of a boot retention device on the ski therefore allows the ski's balance to be corrected in this raised position.

[0005] In the case of skating skis, a similar balance issue arises when the ski is lifted to be brought towards the other ski during the so-called aerial phases. Furthermore, when the snow is sticky, the skier may want a slight rearward imbalance of the skis to lift the front tip by default, thus reducing the risk of digging the tip into the snow while moving on the piste. These adjustment possibilities for skating skis are also achieved by adjusting the longitudinal position of the boot's retention system on the ski.

[0006] 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 some bindings on the market.

[0007] For example, document EP3511057 describes a cross-country ski boot retention device whose longitudinal position is adjustable relative to a mounting plate fixed to the ski. The retention device comprises a frame and a stop element that is movable relative to said frame, in a transverse direction, between an active position in which the stop element cooperates with a rack attached to a mounting plate and an inactive position in which the stop element no longer cooperates with the rack. The stop element can be actuated manually, directly by the user's finger, but can also be switched from its inactive to its active position by means of a cam on the actuating lever of the boot retention mechanism. Thus, when the lever is lowered, it pushes the stop element into its active position and locks it in place.The actuation lever is mounted to rotate freely relative to a jaw that moves in translation relative to the chassis. By being laterally mobile, the locking element can be designed to facilitate its movement from an inactive to an active position or vice versa. However, this design requires a suitable location for the locking element's kinematics. This results in a larger binding and, consequently, added mass at the front of the binding. As a result, the pivot point between the boot and the ski relative to the ski's balance point is shifted forward, negatively impacting ski performance. Furthermore, this design does not allow the locking element to be actuated by the same means used to actuate the binding when the boot retention mechanism is in a boot release configuration.Using an actuation means to act on the stop element allows for improved ergonomics in adjusting the longitudinal position of the retaining device, particularly with regard to controlling the force required to actuate the stop element. Document EP 2386333 B1 describes a stop for an alpine binding comprising a locking mechanism for the longitudinal position of the stop. This mechanism includes a lever interacting with a notched piece, via a cam, to bring it into an unlocked position. The stop also includes elastic means acting on the notched piece to maintain it in its lowered, locked position. The lever acts on the notched piece only to bring it into an unlocked position of the stop. The invention claims the opposite: an interaction between the cam and the stop element to bring it into an engaged (active) position.

[0008] The aim of the invention is to provide an alternative and improved device for retaining a shoe on a sliding board.

[0009] One goal is to offer a mechanism for adjusting the longitudinal position of a restraint device on a more compact board, allowing for better balance of the board.

[0010] Another goal is to offer a mechanism for adjusting the longitudinal position of a restraint device on a board that is easy to handle, and in particular requires no tools.

[0011] Another goal is to propose a mechanism for adjusting the longitudinal position of a retention device on a board, independent of the shoe retention mechanism, and featuring simple and reliable kinematics.

[0012] The invention proposes a device for retaining a shoe on a board, the retention device comprising: a chassis configured to cooperate with an interface fixed to the sliding board so as to be able to slide longitudinally relative to the sliding board, a longitudinal stopping element comprising an indexing means and a first actuating surface, the longitudinal stopping element being carried by the chassis and mounted to move 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 a complementary indexing means fixed to the sliding board in order to immobilize the retaining device relative to the sliding 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 comprising a first cam adapted to interact with the first actuating surface of the longitudinal stop element so as to cause the translation of the longitudinal stop element towards its active position when the actuation means is manipulated in a 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 actuating 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 actuating surface to maintain the longitudinal stop element in its active position.

[0013] The retention device of the invention also stipulates that the actuation means is mounted to be mobile only in rotation relative to the chassis.

[0014] Thanks to this invention, the retention device is compact, lightweight, and less bulky. The binding's center of gravity can be moved rearward, thus avoiding any negative impact on the pivot point between the boot and the ski relative to the ski's balance point. This improves the ski's performance. The actuation mechanism is ergonomic and easy to operate due to its simple and direct kinematics relative to the chassis. Its direct connection to the locking element ensures reliable operation of the longitudinal locking mechanism, with a dependable locking element movement that requires minimal effort and can be operated without tools. Furthermore, the actuation mechanism allows the locking element to be acted upon independently of the boot retention mechanism.This construction makes it possible to design an actuation means suitable for fitting inside the actuation lever of the shoe retention mechanism so as not to be exposed or accessible when the actuation lever is lowered.

[0015] According to advantageous but not mandatory aspects of the invention, such a restraint device may incorporate one or more of the following features, taken in any technically permissible combination: The chassis carries a retaining mechanism configured to cooperate with a fastening element belonging to the shoe so that the shoe is held in position relative to the chassis, and the actuating means is a component separate from the components of the retaining mechanism. In one embodiment, the retaining mechanism is designed to allow the fastening element to be secured to the retaining device while allowing the shoe to rotate about a transverse axis Y1 to the retaining device. The retaining mechanism includes an actuating lever dimensioned to cover the longitudinal stop element and the actuating means when the shoe is held in position relative to the chassis. The actuating means includes 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.In one embodiment, the actuating means comprises two parallel radial extensions spaced apart in a transverse direction. In one embodiment, the median plane of the gripping plate and the median plane of the frame are substantially coincident when the retaining device is assembled. The longitudinal stop element comprises a second actuating surface, and the actuating means comprises a second cam adapted to interact with the second actuating surface of the longitudinal stop element so as to cause the longitudinal stop element to translate to its inactive position. In one embodiment, the second actuating surface faces the first actuating surface. In 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 frame. The translation of the longitudinal stop element relative to the frame is guided by the interaction between a pivot shaft of the actuating means and an oblong opening in the longitudinal stop element. The displacement of the longitudinal stop element is achieved solely by the action of the actuating means, without the longitudinal stop element being subjected to any elastic force. L'élément The longitudinal stop is coupled with an elastic means interposed between the longitudinal stop element and the chassis or a part attached to the chassis so as to cause the longitudinal stop element to move from its active position to its inactive position or vice versa.

[0016] The invention also relates to a sliding device comprising a sliding board and a restraint device as defined above.

[0017] Other features and advantages of the invention will be better understood with the aid of the following description, with reference to the accompanying drawings illustrating, in non-limiting embodiments, how the invention can be implemented, and in which: There figure 1 is a front perspective view of a portion of a sliding device equipped with a restraint system according to the invention, in a first configuration of use, The figure 2 is an exploded view of the restraint device illustrated in figure 1 , There figure 3 is a front view of the restraint device illustrated in figure 1 , There figure 4 is a cross-sectional view along IV-IV of the figure 3 of the gliding device shown illustrated in figure 1 In the first usage configuration, The figure 5 is a cross-sectional view along IV-IV of the figure 3 of the gliding device shown illustrated in figure 1 , in a second usage configuration, The figure 6 is a cross-sectional view along VI-VI of the figure 3 of the gliding device shown illustrated in figure 1 In the first usage configuration, The figure 7 is a cross-sectional view along VI-VI of the figure 3 of the gliding device shown illustrated in figure 1 In the second usage configuration, The figure 8 is a detail view VIII of the figure 6 , There figure 9 is a cross-sectional view along VI-VI of the figure 3 of the gliding device shown illustrated in figure 1 In the first operating configuration, with the actuation lever folded down, the figure 10 is a perspective view of a longitudinal stopping element of the restraint device according to the invention, The figure 11 is a perspective view of a means of actuation of the restraint device according to the invention.

[0018] In the following description, terms such as "horizontal," "vertical," "transverse," "upper," "lower," "lateral," "top," "bottom," "right," "left," "front," "back," "in front of," and "behind" will be used. These terms should be interpreted relatively in relation to the normal position the sliding device occupies when the user operates it on a substantially flat surface.

[0019] We will also use a reference frame 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 / up direction corresponds to the Z axis.

[0020] Furthermore, in the description, certain directions are qualified in relation to a reference frame. To avoid limiting the interpretation, the term "substantially" will be used to clarify that the invention also relates to an angular variation of this direction of plus or minus 15° with respect to this qualification.

[0021] The invention relates to a retention device 1 for a boot 5, also called a binding, intended to be assembled to an interface 2, or mounting plate, attached to a ski or snowboard 3. In one embodiment, the interface 2 and the ski 3 form a single, monobloc piece. Alternatively, as illustrated below, the interface 2 is a separate component fixed to the upper face 32 of the ski 3, opposite its gliding surface 31. The ski 3 extends along a longitudinal axis X3. The retention device 1 is mounted with the possibility of sliding relative to the ski 3, along its longitudinal axis X3. The assembly consisting of the retention device 1, the interface 2, and the ski 3 forms a snowboard 4.

[0022] The invention relates more particularly to a gliding device intended for cross-country skiing or ski touring. Such a gliding device is equipped with a retention system designed to secure the front of the boot to the ski. Thus, the retention system does not secure the heel of the boot to the ski. The skier can then freely lift their heel without lifting the ski. The gliding device may nevertheless include a guide edge arranged to limit the lateral movement of the heel when it engages with the guide edge while the heel is resting on the ski.

[0023] The interface 2 is fixed to the ski 3 such 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 having a central portion 212 and two lateral wings 213 extending on either side of the central portion 212. The outer edge of each lateral wing 213 forms a lateral rail extending in a direction parallel to the longitudinal axis X2 of the interface. The main body 21 has a top face 211. The main body 21 is attached to the ski 3 by any suitable means. This can be by gluing or by screws. In its central part 212, the main body 21 includes a housing 2121 for receiving an insert 22. The insert 22, like the main body 21, is a component of the interface 2. The insert 22 includes a top surface 221 and a series of notches 222 extending from the top 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 stop element 13 so as to be able to immobilize the retaining device along the slide board, in 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 along a longitudinal direction X parallel to the longitudinal axis X2 of the mounting plate.In use, the 222 notches are subjected to significant stress because they hold the retention device in position along its length. Therefore, it is best to choose a suitable material for these notches. The proposed design, which involves adding a removable insert, offers several advantages. Firstly, it allows for replacement of the part if the notches are damaged, and secondly, it enables the use of a more rigid material locally, where needed, without increasing the weight of the interface and therefore the ski. For example, the insert can be made of reinforced polymer or metal, while the rest of the interface is made of unreinforced plastic. The insert can be removably mounted on the interface using any appropriate method, such as clips or screws.This solution can be applied to any type of indexing 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 supplementary indexing means 20 can be implemented by one or more pins cooperating with holes. The series of notches 222 can be replaced by a series of slots, recesses, or indentations corresponding to the gap between two notches. The notches are not necessarily straight in a transverse direction.

[0024] In one embodiment, the interface 2 includes connecting means for securing the insert 22 and the main body 21 together in all directions once the two parts are assembled. These connecting means may be removable to allow replacement of the insert if necessary. In another variant, these connecting means are non-removable without damaging the interface.

[0025] Alternatively, the supplementary indexing means 20 and the interface 2 form a single, monolithic part. For example, the notches 222 are formed directly in the central portion 212 of the main body 21 and not on a separate insert 22. Advantageously, the notches 222 are made of a different material than the main body 21. In this case, the notches 222 are formed on an insert 22 that is overmolded to the main body 21. The assembly consisting of the main body 21 and 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 necessary, for example, at the point of transmission of longitudinal forces.Furthermore, this allows, for example, the use of a suitable material for bonding the interface to the ski at the contact area between the interface and the ski, for example, the main body 21 of the interface. In 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 unreinforced polymer.

[0026] According to an embodiment mentioned previously, the interface 2 is bonded to the upper face 32 of the sliding board 3. This can be achieved by separately bonding the constituent parts of the interface, the insert 22 on the one hand and the main body 21 on the other. Alternatively, this can be achieved by simultaneously bonding the constituent parts of the interface, either with a one-piece interface, the interface then being made of a single material or a multi-material overmolded component, or with a pre-assembled interface, the insert then being already attached to the main body via connecting means.

[0027] Interface 2 is positioned between the sliding board 3 and the retention device 1. It carries the additional indexes 20.

[0028] According to the embodiment described, the retention device 1 is a cross-country ski binding and includes a chassis 11, a mechanism 12 for holding in position a hooking element 51 belonging to the boot 5, a longitudinal stop element 13, an actuation means 14 for the longitudinal stop element and a return means 16 for bringing the heel of the boot closer to the ski.

[0029] The chassis 11 is designed to be assembled to 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 includes a lower face 111 intended to face the upper face 211 of the interface 2. The lower face 111 is laterally delimited by two flanges 112, extending along a vertical axis Z, towards the interface, from the lower face. Each flange 112 includes an internal lateral groove 113 oriented in a longitudinal direction parallel to the longitudinal axis X1 of the chassis. The two internal lateral grooves 113 face each other. Each internal lateral groove 113 is intended to cooperate with a rail formed by one of the lateral flanges 213 of the interface 2 so as to guide the chassis in translation relative to the interface, along a longitudinal direction X.This cooperation also maintains the relative position between the chassis and the interface along a Z-direction, normal to the upper face of the interface. This cooperation thus defines a sliding-type connection between the chassis and the interface, ensuring the longitudinal sliding of the retention device relative to the ski. Other longitudinal guidance solutions could be considered.

[0030] Conventionally, the frame 11 carries, in its upper part, the mechanism 12 for holding in position a fastening element 51 belonging to the shoe 5. In the illustrated embodiment, the fastening element 51 is a transverse shaft integrated into a recess in the front of the sole 52 of the shoe 5, extending in a transverse direction Y5. In practice, the shoe 5 can conform to the technical teaching of applications EP-A-0 913 102 and / or EP-A-0 913 103, to which reference may be made for further details. To secure the shoe to the retention device, the retention mechanism 12 comprises a fixed jaw 121, a movable jaw 122, an actuating lever 123, and connecting rods 124. The operation is analogous to that of the fastening described in document FR-A-2638974.

[0031] The fixed jaw 121 can be an added part, fixed to the frame 11. It can be made of metal or a suitable material to withstand friction and stress between the fixed jaw and the shoe's fastening element 51. Alternatively, the fixed jaw 121 can be a portion of the frame 11. In this case, the fixed jaw and the frame form a single, monolithic piece.

[0032] The movable jaw 122 is designed to move between an engaged position and a released position. When in its engaged position, the movable jaw 122 is able to cooperate with the fixed jaw 121 to form an interstitial space for receiving the fastening element 51, as detailed below. This arrangement secures the fastening element to the retention device while allowing the shoe to rotate around a transverse axis Y1 to the retention device. When it is in its released position, as shown in figures 4 à 7 The movable jaw 122 is separated from the fixed jaw 121 to create an upper passage for the latching element 51, allowing it to disengage from the previously defined interstitial space. This configuration enables the latching element to be separated from the retaining device.

[0033] 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 inside which can accommodate the latching element 51 so that the latter can freely pivot about the axis Y1 of the cylinder formed. In this case, the axis Y5 of the latching element 51 and the axis Y1 of the cylinder formed are substantially aligned. Thus, the fixed jaw 121 is arranged so that the latching 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 hooking element 51 can pass. In this example, the movable jaw 122 is positioned in front of the fixed jaw 121 on the chassis 11.

[0034] The actuating lever 123 is in the form of a cap mounted pivotally on the body of the movable jaw 122 about a transverse axis Y123. Each lateral edge of the actuating lever 123 is connected to a front portion 117 of the frame 11, which forms a yoke, by a connecting rod 124. One end of the connecting rod is rotatably mounted on the front portion of the frame about a transverse axis Y124, parallel to the pivot axis Y123 of the actuating lever. A second end of the connecting rod is rotatably mounted on a lateral edge of the actuating lever about a transverse axis Y124, parallel to the pivot axis Y123 of the actuating lever 123.

[0035] To move the movable jaw from its engaged position to its released position, or vice versa, the user operates the actuating lever 123. Lowering the actuating lever 123 moves the movable jaw 122 to its engaged position. Conversely, raising the actuating lever moves the movable jaw from the engaged position to the released position. In this example, when fully lowered, the actuating lever 123 is designed to rest against the front upper face 116 of the frame 11. In this configuration, the movable jaw is in its engaged position.

[0036] In this example, the control device is designed to lock the movable jaw in the engaged position. Thus, when the actuating lever is fully raised, the movable jaw is in its released position. By lowering the actuating lever to a specific angle, the movable jaw is brought to its engaged position. Then, by continuing to rotate the actuating lever until it rests against a front upper face 116 of the frame 11, the movable jaw is locked in its engaged position and can no longer move longitudinally, in the X direction, without further action on the actuating lever.

[0037] The actuating lever 123 forms a cover incorporating a lower recess 1231 designed to form, together with the front upper face 116 of the frame 11 and a portion of the body of the movable jaw 122, a substantially closed volume when the actuating lever 123 rests on the front upper face 116 of the frame 11. Thus, in this configuration, the actuating lever 123 protects the components housed in this cavity from external weather conditions such as snow or ice. The connecting rods 124 are arranged to fit into this cavity when the actuating lever 123 is lowered, that is, when the retaining device is engaged.

[0038] According to one embodiment, the return means 16 for bringing the heel of the boot closer to the ski is an elastic pad carried by the body of the movable jaw 122. The elastic pad 16 is designed to bear against a front face of the sole when the user lifts their heel. This type of return means is illustrated in document FR-A-2638974.

[0039] According to the invention, the retaining device comprises a longitudinal stop element 13 having an indexing means 131 and a first actuating surface 1322. The longitudinal stop element 13 is supported by the frame 11. It is mounted to move in translation relative to the frame, between two configuration positions. The first configuration position is an active position, shown in the figures 4 , 6 , 8 et 9 , for which the indexing means 131 is capable of cooperating with a complementary indexing means 20 attached to the slide board in order to immobilize the retaining device relative to the slide board in one of several predetermined longitudinal positions. The second configuration position is an inactive position, shown in figures 5 And 7 , for which indexing means 131 does not cooperate with complementary indexing means 20.

[0040] 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.

[0041] The indexing means 131 extends from the lower surface 1321 of the plate. Here, the indexing means 131 forms two notches 1311 extending along a transverse direction Y, across the entire width of the plate. The flanks of each notch 1311 are preferably inclined so that the base of the notch is thicker. This chamfering, combined with the chamfering of the notches 222 of the insert 22, facilitates the positioning and interaction of the notches 1311 and 222, that is, between the indexing means 131 and the complementary indexing means 20. The 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 include a single notch 1311 or more notches 1311. The notches may take other shapes or dimensions.

[0042] The longitudinal immobilization of the retaining device relative to the slide is achieved through the interaction between the indexing means 131 of the longitudinal stop 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 consists of two notches 131. The complementary indexing means 20 comprises several slots for the index(es); in this example, the slot corresponds to the interstitial space between two successive notches 222 of the insert 22. The slots are aligned along a longitudinal direction X to allow the longitudinal adjustment of the retaining device relative to the slide to one of several predetermined longitudinal positions. Thus, each slot defines a predetermined longitudinal position.

[0043] Furthermore, to facilitate adjustment of the longitudinal position of the restraint device, the frame may include one or more markers designed to cooperate with one or more graduations on the upper surface of the interface. This provides the user with a visual reference for determining the exact longitudinal position of the frame relative to the interface. Other embodiments of this visual indicator may be considered.

[0044] In its upper part, the longitudinal stop element 13 comprises a central rib 133, of thickness E133, between two lateral faces 1331. The central rib extends 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 a through oblong opening 1332, extending along its thickness. The oblong opening 1332 thus opens onto each lateral face 1331 of the central rib. The oblong opening 1332 is oriented along a vertical direction Z. The central rib also includes a vertical flat anterior surface 1333 extending substantially over the entire height of the central rib. Furthermore, the central rib includes two upper extensions 134.Each of these extensions 134 extends respectively from the upper part of a lateral face 1331 of the central rib. Each extension 134 then extends along 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 onto a frontal plane YZ of the subassembly composed of the plate 132, the central rib 133, and its two extensions 134 essentially forms a capital "i" (like the cross-section of an IPN or IPE beam).

[0045] According to the invention, the longitudinal stop element 13 is movable in translation along 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 protrude from the lower face 111 of the frame 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 recessed from the lower face 111 of the frame 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 indexing means 131 retracts into the frame, rising so as not to protrude from the lower face 111 of the frame 11. Thus, the frame 11 can slide more freely along interface 2.With a retractable indexing mechanism (131), the retention device is compatible with an optimized, low-profile interface. This allows for a lighter ski and a more flexible interface that better adapts to the ski's camber. The ski's performance is improved. Unlike the prior art cited, this design no longer requires a groove in the front part of the interface for the stop element, because the stop element is no longer at risk of interfering with any part of the interface when the frame slides along it. However, the exposed groove can become damaged or clogged, which can hinder the frame's movement during assembly or disassembly with the interface. This groove is also a source of water or snow entry at the stop element, which can block its kinematics, especially if the water freezes or the snow compacts.Furthermore, this solution makes it possible to protect the indexing means 131 during the handling of the unmounted fixing when the longitudinal stop element is in its inactive position.

[0046] In this example, the frame includes a through-opening 114 in the vertical direction, along a Z-direction, 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 designed to house the longitudinal stop element 13, and more specifically, to guide the vertical translation of the longitudinal stop element 13 at the level of its plate 132. Consequently, the dimensions of the peripheral edges of the through-opening 114 correspond approximately to the dimensions of the peripheral edges of the plate 132 of the longitudinal stop element 13, within the limits of 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 guiding means is thus able to cooperate with the complementary guiding means so as to guide the translation of the longitudinal stop element 13 relative to the frame 11. To further improve the guidance and prevent the longitudinal stop element 13 from tilting when it moves, the frame 11 may include upper vertical extensions 115 extending upwards from the upper face 116 of the frame 11. These upper vertical extensions 115 include 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 flat front surface 1333 of the longitudinal stop element 13 so as to guide the translation of the longitudinal stop element 13 relative to the frame 11. These extensions 115 also constitute a guiding means, as defined previously.Similarly, the vertical flat front surface 1333 of the longitudinal stop element 13 also constitutes a complementary guiding means, as defined previously.

[0047] According to the invention, the retaining device comprises an actuating means 14 designed and arranged to interact with the longitudinal stop element 13. The actuating means 14 is supported by the frame 11. It comprises a first cam 141 adapted to interact with the first actuating surface 1322 of the longitudinal stop element 13 so as to cause the longitudinal stop element 13 to translate into its active position when the actuating means 14 is manipulated in a given direction. The actuating means 13 is mounted to move relative to the frame 11 between an engaged position, in which the first cam 141 acts on the first actuating surface 1322 to hold the longitudinal stop element 13 in its active position, and a disengaged position, in which the first cam 141 does not act on the first actuating surface 1322 to hold the longitudinal stop element 13 in its active position.

[0048] According to the invention, the actuation means 14 is mounted to rotate only relative to the frame 11 about a rotation axis Y14 substantially transverse to the frame 11. The use of a pivoting lever is common for this type of fastening. The kinematics are simple and analogous to those of the actuation lever 123 of the shoe retention mechanism 12, making it ergonomic.

[0049] According to one embodiment, the actuation 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 actuation means 14. The radial extension 144 carries the first cam 141.

[0050] In this example, the gripping plate 143 comprises a lower surface 1431 and an upper surface 1432, designed for manipulating the actuating means 14. Thus, with their finger, the user will press on the upper surface 1432 to tilt the actuating means 14 to its engagement position illustrated in the figures 4 , 6 , 8 et 9 Conversely, the user will press on the lower surface 1431 to tilt the actuation means 14 to its disengaged position illustrated in the figures 5 And 7Here, the gripping plate 143 extends at one edge with two parallel extensions 144, spaced apart along a transverse direction Y. Thus, a central recess 1442 is created between the two radial extensions 144. The end of each radial extension 144 includes a hole 1441 passing transversely through the thickness of the extension, along a Y direction. These two through holes 1441 have substantially the same diameter and are substantially aligned on a transverse axis Y14 corresponding to the axis of rotation of the actuating means. These two through holes 1441 are designed to receive a pivot shaft 15 mounted on a front portion 117 of the frame 11 forming a yoke. The two walls 1171 of the screed extend upwards from the upper face 116 of the frame 11. They are arranged and spaced apart so that the two radial extensions 144 can fit between them.The end of each radial extension 144 also includes, in its lower part, the first cam 141, and in its upper part, a second cam 142. The dimensions of the through hole 1441, the first cam 141, and the second cam 142 are identical for both radial extensions 144. The projection of the first 141 and second cams 142 of one radial extension 144a onto the median sagittal plane XZ of the actuating means 14 is substantially identical to the projection of the first 141 and second cams 142 of the other radial extension 144b onto the median sagittal plane XZ of the actuating means 14. When the actuating means 14 is assembled to the frame 11, the median plane XZ143 of the gripping plate 143 and the median plane XZ11 of the frame 11 are substantially identical.

[0051] The chassis 11, the longitudinal stop element 13 and the actuating means 14 are dimensioned and arranged so that the actuating means 14 can interact with the longitudinal stop element 13 in order to move the longitudinal stop element 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 actuating means 14 is able to interact with the first actuating surface 1322 of the longitudinal stop element 13 in order to cause the translation of the longitudinal stop element 13 towards its active position. On the other hand, this arrangement is designed so that the second cam 142 of the actuating means 13 is able to interact with the second actuating surface 1341 of the longitudinal stop element 13 so as to cause the translation of the longitudinal stop element 13 towards its inactive position.

[0052] Thus, when the user lowers the actuating means 14, the first cam 141 comes into contact with the first actuating surface 1322 and then pushes the longitudinal stop element 13 towards its active position. During this phase, the second cam 142 moves away from the second actuating surface 1341 so as not to be in contact. In this configuration, the gripping plate 143 comes into contact with the front upper face 116 of the frame 11. Lowering the actuating means 14 consists of rotating the actuating means 14 around its axis of rotation Y14, in an engagement direction, to tilt it from its disengaged position to its engaged position. Conversely, when the user raises the actuation means 14, the second cam 142 comes into contact with the second actuation surface 1341 and 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 not to be in contact.

[0053] Thanks to this kinematic arrangement, the actuating means 14 acts directly, via the cams 141 and 142, on the longitudinal stop element 13. This allows for a balanced and efficient force to be applied to the actuating means 14, which in turn actuates the longitudinal stop element 13 without excessive effort, even if it is jammed by snow, ice, or other obstructions. The operation of the longitudinal adjustment mechanism is more reliable, both for locking and unlocking.

[0054] Furthermore, the first cam 141 and the first actuating surface 1322 are dimensioned and arranged such that, when the longitudinal stop element 13 is in its active position and the actuating means 14 is in its engaged position, an action on the longitudinal stop element 13 to tilt it to its inactive position causes the actuating means 14 to rotate in its direction of engagement. However, when in its engaged position, the actuating means 14 abuts against the front upper face 116 of the frame 11. Consequently, the rotation of the actuating means 14 is blocked in this direction. The design therefore allows the longitudinal stop element 13 to be locked in its active position. The longitudinal stop element cannot thus tilt to its inactive position by a direct action on the longitudinal stop element. This configuration change is only possible via actuation means 14.To achieve this characteristic, these parts are designed so that, when the longitudinal stop element 13 is in its active position and the actuating means 14 is in its engaged position, the direction N, normal to the line of contact between the first cam and the first actuating surface, is offset from the axis of rotation Y14 of the actuating means 14. This allows an upward vertical force applied to the longitudinal stop element 13 to rotate the actuating means 14 in its direction of engagement. Here, the direction N is offset rearward relative to the axis of rotation Y14 of the actuating means 14.

[0055] In this example, the through opening 114 of the frame 11 is positioned between the walls 1171 of the screed 117.

[0056] In this example, the pivot shaft 15, assembled to the yoke 117 of the frame 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 also constitutes a guiding means, as defined previously. Similarly, the oblong opening 1332 also constitutes a complementary guiding means, as defined previously. The use of the same pivot shaft 15 for assembling several components of the restraint device, and more specifically the actuating means 14 and the longitudinal stop element 13, contributes to the compactness of the restraint device.

[0057] In this example, the pivot shaft 15, assembled to the yoke 115 of the frame 11, passes through oblong holes 1221 formed on the front extensions of the body of the movable jaw 122. These oblong holes 1221 are through holes along a transverse axis Y and extend along an axis X, so as to guide the longitudinal translation of the movable jaw. Furthermore, each first end of the connecting rods 124 of the retaining mechanism 12 is rotatably mounted on this pivot shaft 15 and thus around a transverse axis Y124 positioned in the front part 117 of the frame 11 as previously described. The second end of the connecting rods 124 is rotatably mounted on a lateral edge of the actuating lever 123 of the retaining mechanism 12. This solution allows for 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 actuation means 14, the vertical guidance of the longitudinal stop element 13, the longitudinal guidance of the movable jaw 122, the rotation axis Y124 of the connecting rods 124.

[0058] In this example, the frame 11, the actuating lever 123 of the retaining mechanism 12, the longitudinal stop element 13, and the actuating means 14 are dimensioned and arranged so that the longitudinal stop element 13 and the actuating means 14 can fit inside a recess 1231 formed within the actuating lever 123 of the retaining mechanism 12 when the latter is lowered against the upper face 116 of the frame 11. Thus, the actuating lever 123 is dimensioned to cover the longitudinal stop element 13 and the actuating means 14 when the shoe is held in position relative to the frame. In this configuration, the actuating means 14 is in its engaged position. This construction protects the longitudinal stop element 13 and the actuation means 14 from the weather when the user is skiing, thus improving the reliability of the longitudinal adjustment mechanism.Indeed, this limits the risk of the mechanism being blocked by snow, ice, or other debris. Furthermore, the actuating lever 123 also protects the mechanism against the risk of unintentional manipulation of the actuating means 14. Because it is inaccessible when the boot is connected to the retention mechanism, the actuating means cannot be manipulated. Therefore, there is no risk of the user or an external object, such as a ski, boot, branch, or anything else, unintentionally activating the actuating means.

[0059] Advantageously, the actuating lever 123 and the actuating means 14 are sized and arranged so that the actuating lever 123 can cooperate with the actuating means 14, such that when the user lowers the actuating lever 123, this causes the actuating means 14 to pivot to its engaged position, and when the actuating lever 123 is in contact with the upper face 116 of the frame 11, the actuating means 14 is in its engaged position. This solution ensures safe operation because the user is then assured of a locked longitudinal position when the shoe is connected to the retention mechanism. In this example, the lowering of the actuating lever 123 is achieved by contact between an inner face 1232 of the recess 1231 and the upper surface 1432 of the gripping plate 143.

[0060] Advantageously, the actuating lever 123 and the longitudinal stop element 13 are dimensioned and arranged so that, when the actuating 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 element 13 and the internal surface 1232 of the recess 1231.

[0061] In this example, the longitudinal stop element 13 is actuated by an actuation means 14 that is independent of the retaining mechanism 12. This design improves the reliability of the longitudinal adjustment mechanism because it is not dependent on the condition of the retaining mechanism. The user can remove their skis or snowboard without risk of losing the longitudinal adjustment of their binding.

[0062] In this example, the central rib 133 of the stop element 13 is housed within the central recess 1442 defined by the radial extensions 144 of the actuating means 14. This arrangement contributes to the compactness of the restraint device. Furthermore, the central rib 133 of the stop element 13 is also housed between the two walls 1171 of the bracket 117 of the frame 11, as are the radial extensions 144 of the actuating means 14. This arrangement also contributes to the compactness of the restraint device.

[0063] In one embodiment, the retention device is directly attached to the ski, without a separate interface piece. In this case, the upper surface of the ski incorporates the elements enabling the retention device to be mounted on the ski.

[0064] Other embodiments of the mechanism for holding a binding element in position on the boot can be considered. For example, the movable jaw can be positioned rearward on the retention device relative to the fixed jaw. The retention mechanism may not have a fixed jaw. For example, the movable jaw can be made of two transversely movable points, arranged symmetrically with respect to the longitudinal median plane of the ski, each point being able to engage with a recess provided on a lateral edge of the front of the boot sole. Such a construction is illustrated, for example, in document EP-A-0199098. Similarly, other solutions for the actuation element can be considered. This could be a rotary knob or a push button.

[0065] According to the embodiments described above, the movement of the longitudinal stop element 13 is achieved solely by the action of the actuation means 14 without the longitudinal stop element 13 being stressed by any elastic means.

[0066] In one embodiment, the longitudinal stop element 13 is coupled with an elastic means interposed between the longitudinal stop element and the chassis or a part integral with the chassis, so as to cause the longitudinal stop element to move from its active position to its inactive position. In this case, the actuating means maintains the longitudinal stop element in its active position. A second cam would no longer be necessary. Indeed, as soon as the first cam no longer cooperates with the first actuating surface, the elastic means would bring the longitudinal stop element to its inactive position. It is preferable to provide a stop for the longitudinal stop 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 stop element when it reaches the stop.This design facilitates the disengagement of the indexing mechanism from the complementary indexing mechanism, thus reducing the risk of jamming. Furthermore, it ensures a stable configuration with the longitudinal stop element disengaged during the movement of the retaining device during adjustment.

[0067] In one embodiment, the longitudinal stop element 13 is coupled with an elastic means interposed between the longitudinal stop element and the chassis or a part integral with the chassis, so as to cause the longitudinal stop element to move 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. A first cam would no longer be required. The construction would be similar to that described previously, except that the actuating means would not have a first cam, and the first actuating surface could serve as a support for the elastic means (other alternative solutions could be considered for positioning the elastic means). Indeed, as soon as the second cam no longer cooperates with the second actuating surface, the elastic means would bring the longitudinal stop element to its active position.It is preferable to provide a stop for the longitudinal stop element to limit its movement when it moves away from its inactive position. The active position would then correspond to the position of the longitudinal stop element when it reaches the stop. This design facilitates the engagement of the indexing means with the complementary indexing means. Furthermore, it ensures a stable, engaged configuration of the longitudinal stop element when no longer in an adjustment configuration. This secures the adjustment; if the actuating means becomes inoperative, it is more certain that the longitudinal position of the retaining device is locked. Alternatively, the device includes such an elastic means and an actuating means equipped with a first cam. In this case, the cam would lock the longitudinal stop element in its active position.

[0068] The invention is not limited to these embodiments. It is possible to combine these embodiments.

[0069] The invention is not limited to the embodiments described above but extends to all embodiments covered by the attached claims. Nomenclature

[0070] 1- Retaining device 11- Chassis 111- Lower face 112- Rim 113- Internal lateral groove 114- Through opening 115- Vertical extension 116- Upper face 117- Clevis 1171- Wall 12- Holding mechanism 121- Fixed jaw 122- Movable jaw 1221- Oblong hole 123- Actuating lever 1231- Recess 1232- Internal surface 124- Connecting rod 13- Longitudinal stop element 131- Indexing means 1311- Notch 132- Plate 1321- Lower surface 1322- Upper surface / First actuating surface 133- Central rib 1331- Lateral face 1332- Oblong opening 1333- Front surface 134- Upper extension 1341- Lower surface / Second actuation surface 135- Upper surface 14- Actuation means 141- First cam 142- Second cam 143- Gripping plate 1431- Lower surface 1432- Upper surface 144- Radial extension 1441- Through hole 1442- Central recess 15- Pivot shaft 16- Return means 2- Interface 20- MeansAdditional indexing 21- Main body 211- Upper face 212- Central part 2121- Housing 213- Side wing 22- Insert 221- Upper face 222- Notch 3- Sliding board 31- Sliding surface 32- Upper surface 4- Sliding device 5- Shoe 51- Attachment element 52- Sole

Claims

1. Device (1) for retaining a boot (5) on a gliding board (3), the retaining device comprising: - a chassis (11) configured to cooperate with an interface (2) as one with the gliding board so as to be able to slide longitudinally with respect to the gliding board, - a longitudinal stop element (13) comprising an indexing means (131) and a first actuating surface (1322), the longitudinal stop element being borne by the chassis and mounted so as to be able to move in translation with respect to the chassis, in a substantially vertical direction, between two configuration positions: • an active position in which the indexing means is able to cooperate with a complementary indexing means (20) as one with the gliding board in order to immobilize the retaining device with respect to the gliding board in one of a plurality of predetermined longitudinal positions, and • an inactive position in which the indexing means does not cooperate with the complementary indexing means - an actuating means (14) comprising a first cam (141) that is able to interact with the first actuating surface (1322) of the longitudinal stop element so as to cause the translation of the longitudinal stop element towards its active position when the actuating means is manipulated in one direction, the actuating means being borne by the chassis and mounted so as to be able to move with respect to the chassis between • an engagement position in which the first cam acts on the first actuating surface to hold the longitudinal stop element in its active position and • a disengagement position in which the first cam does not act on the first actuating surface to hold the longitudinal stop element in its active position, wherein the actuating means is mounted so as to be able to move only in rotation with respect to the chassis.

2. Retaining device (1) according to Claim 1, characterized in that the chassis bears a holding mechanism (12) configured to cooperate with an attachment element belonging to the boot such that the boot is held in position with respect to the chassis and in that the actuating means is a component that is distinct from the components of the holding mechanism.

3. Retaining device (1) according to the preceding claim, characterized in that the holding mechanism (12) is designed to allow the attachment element to be secured to the retaining device while at the same time allowing the boot to rotate about an axis (Y1) transverse to the retaining device.

4. Retaining device (1) according to either of the two preceding claims, characterized in that the holding mechanism comprises an actuating lever (123) dimensioned to cover the longitudinal stop element and the actuating means when the boot is held in position with respect to the chassis.

5. Retaining device (1) according to one of the preceding claims, characterized in that the actuating means 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, the radial extension bearing the first cam.

6. Retaining device (1) according to the preceding claim, characterized in that it comprises two parallel radial extensions (144), which are spaced apart from one another in a transverse direction.

7. Retaining device (1) according to either of the two preceding claims, characterized in that the median plane (XZ143) of the gripping plate and the median plane (XZ11) of the chassis are substantially coincident, when the retaining device is assembled.

8. Retaining device (1) according to one of the preceding claims, characterized in that the longitudinal stop element (13) comprises a second actuating surface (1341) and in that the actuating means (14) comprises a second cam (142) that is able to interact with the second actuating surface of the longitudinal stop element so as to cause the translation of the longitudinal stop element towards its inactive position.

9. Retaining device (1) according to the preceding claim, characterized in that the second actuating surface (1341) faces the first actuating surface (1322).

10. Retaining device (1) according to either of the two preceding claims combined with one of Claims 5 to 7, characterized in that the at least one radial extension (144) bears the second cam.

11. Retaining device (1) according to one of the preceding claims, characterized in that the indexing means (131) is dimensioned and arranged such that, when the longitudinal stop element tilts into its inactive position, the indexing means retracts into the chassis.

12. Retaining device (1) according to one of the preceding claims, characterized in that the translation of the longitudinal stop element (13) with respect 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 stop element (13).

13. Retaining device (1) according to one of the preceding claims, characterized in that the displacement of the longitudinal stop element (13) is realized solely by the action of the actuating means (14) without the longitudinal stop element (13) being urged by any elastic means.

14. Retaining device (1) according to one of Claims 1 to 13, characterized in that the longitudinal stop element (13) is coupled to an elastic means interposed between the longitudinal stop element and the chassis or a piece as one with the chassis so as to drive the displacement of the longitudinal stop element from its active position towards its inactive position or vice versa.

15. Gliding contraption (4) comprising a gliding board and a retaining device according to one of the preceding claims.

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