Device for retaining a shoe on a sliding board and sliding device comprising such a device

Abstract

Device for retaining a shoe on a sliding board, the retaining device comprising: a chassis, a longitudinal stop element comprising an indexing means and a first actuating surface, the stop element being mounted so as to be movable in translation relative to the chassis, in a vertical direction, between: an active position for which the indexing means is capable of cooperating with a complementary indexing means secured to the sliding board, and an inactive position for which the indexing means does not cooperate with the complementary indexing means an actuating means comprising a first cam capable of interacting with the first actuating surface so as to cause the translation of the longitudinal stop element towards its active position. The actuating means is mounted so as to be movable only in rotation relative to the chassis. Abstract figure: figure 1

Description

Title of the invention: Device for retaining a shoe on a sliding board and sliding device comprising such a device

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

[0002] For the purposes of the present invention, a sliding device is a piece of equipment on which a person stands when using this device for practicing a sliding sport, 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 the case of classic or alternative cross-country skiing, the ski is arched 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 so as to increase the grip of the ski on the snow in order to prevent the ski from moving backward, which allows for effective thrust with the foot. By modifying the longitudinal position of a boot retention device on the ski, it is possible to adjust the contact area between the ski and the snow according to the weight exerted by the skier, favoring glide or grip. When turning, the skier is required 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 tilts forward or backward, it can touch the snow, which can slow the skier down or throw them off balance. Adjusting the length of a boot retainer on the ski therefore allows the ski's balance to be adjusted in this lifted configuration.

[0005] 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 wish to have a slight imbalance towards the rear of his skis to lift the front tip by default and thus limit the risks of planting this tip in the snow when progressing on the slope. These adjustment possibilities for a skating ski are also obtained by adjusting the longitudinal position of the device for retaining a boot on the ski.

[0006] The adjustment of 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.

[0007] For example, document EP3511057 describes a device for retaining 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 stop element movable relative to said frame, in a transverse direction, between an active position for which the stop element cooperates with a rack secured to a mounting plate and an inactive position for 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 tilted from its inactive position to its active position by means of a cam provided on the actuating lever of the boot holding mechanism. Thus, when the lever is lowered, it pushes the stop element into its active position and locks it.The actuating lever is mounted so as to be movable in rotation relative to a jaw that is movable in translation relative to the frame. By being movable transversely, the stop 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 stop 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 gliding device relative to the balance point of the ski is shifted forward, which penalizes the performance of the ski. In addition, this construction does not allow the actuation of the stop element by an actuation means of the retaining device when the boot retaining mechanism is in a boot release configuration.The use of an actuating means to act on the stop element allows for better ergonomics in adjusting the longitudinal position of the retaining device, in particular with regard to controlling the force to be applied to actuate the stop element.

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

[0009] One aim is in particular to propose a mechanism for adjusting the longitudinal position of a retaining device on a sliding board that is more compact, allowing better balance of the sliding device.

[0010] Another aim is to propose a mechanism for adjusting the longitudinal position of a retaining device on a sliding board which is easy to handle, and in particular without tools.

[0011] Another aim is to propose a mechanism for adjusting the longitudinal position of a retaining device on a sliding board, independent of the shoe retaining mechanism, and having simple and reliable kinematics.

[0012] The invention provides a device for retaining a shoe on a sliding board, the retaining device comprising: - a frame configured to cooperate with an interface secured to the sliding board so as to be able to slide longitudinally relative to the sliding board, - a longitudinal stop element comprising an indexing means and a first actuating surface, the longitudinal stop 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 capable of cooperating with a complementary indexing means secured 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 actuating means comprising a first cam capable of interacting 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 actuating means is manipulated in one direction, the actuating means being carried by the chassis and mounted to move 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 disengaged 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 retaining device is characterized by the fact that the actuating means is mounted to be movable only in rotation relative to the chassis.

[0014] Thanks to the invention, the retaining device is compact, lightweight 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 device relative to the balance point of the ski. The performance of the sliding device can thus be improved. The actuation means can be ergonomic, by being easy to handle, due to its simple and direct kinematics in relation to the chassis. Its direct connection with the stop element allows for proper operation of the longitudinal immobilization mechanism, with reliable movement of the stop element, requiring little handling effort and operable without tools. Furthermore, the actuating means allows the stop element to be acted upon independently of the shoe holding mechanism. This construction thus makes it possible to design an actuating means capable of being housed inside the actuating lever of the shoe holding mechanism so as not to be exposed or accessible when the actuating lever is lowered.

[0015] According to advantageous but not mandatory aspects of the invention, such a retaining device may incorporate one or more of the following features, taken in any technically admissible combination:

[0016] - The chassis carries a holding mechanism configured to cooperate with a a fastening element belonging to the shoe so that the shoe is held in position relative to the chassis and in that the actuating means is a component separate from the components of the holding mechanism.

[0017] - The holding mechanism comprises an actuating lever sized to cover the longitudinal stop element and the actuating means when the shoe is held in position relative to the chassis.

[0018] - The actuating means comprises a gripping plate and at least a 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 actuating means comprises two parallel radial extensions, spaced from each other in a transverse direction. According to one embodiment, the median plane of the gripping plate and the median plane of the chassis are substantially merged, when the retaining device is assembled.

[0019] - The longitudinal stop element comprising a second actuating surface and in that the actuating means comprises a second cam capable of interacting 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. According to one embodiment, at least one radial extension carries the second cam.

[0020] - The indexing means is sized and arranged so that, when the element longitudinal stop switches to its inactive position, the indexing means retracts into the chassis.

[0021] The invention also relates to a sliding device comprising a sliding board and a retaining device as defined previously.

[0022] 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 implemented, and in which:

[0023] - [Fig. 1] is a perspective view from the front of part of a machine of slide equipped with a retaining device conforming to the invention, in a first configuration of use,

[0024] - [Fig.2] is an exploded view of the retaining device illustrated in [Fig.l],

[0025] - [Fig.3] is a front view of the retaining device illustrated in [Fig.l],

[0026] - [Fig.4] is a sectional view along IV-IV of [Fig.3] of the sliding device shown illustrated in [Fig.l], in the first configuration of use,

[0027] - [Fig.5] is a sectional view along IV-IV of [Fig.3] of the sliding device shown illustrated in [Fig.l], in a second configuration of use,

[0028] - [Fig.6] is a sectional view along VLVI of [Fig.3] of the sliding device shown illustrated in [Fig.l], in the first configuration of use,

[0029] - [Fig.7] is a sectional view along VLVI of [Fig.3] of the sliding device shown illustrated in [Fig.l], in the second configuration of use,

[0030] - [Fig.8] is a detail view VIII of [Fig.6],

[0031] - [Fig.9] is a sectional view along VLVI of [Fig.3] of the sliding device shown illustrated in [Fig.l], in the first configuration of use, operating lever folded down,

[0032] - [Fig. 10] is a perspective view of a longitudinal stop element of the retaining device according to the invention,

[0033] - [Fig. 11] is a perspective view of an actuating means of the device of retained according to the invention.

[0034] In the remainder of the description, use will be made of terms such as "horizontal", "vertical", "transverse", "upper", "lower", "lateral", "high", "low", "right", "left", "front", "rear", "in front", "behind". These terms must be interpreted relatively in relation to the normal position that the sliding device occupies when the user uses it on a substantially flat track.

[0035] A reference will also be used whose rear / front direction corresponds to the X axis, the transverse or right / left direction corresponds to the Y axis and the vertical or down / up direction corresponds to the Z axis.

[0036] The invention relates to a retaining device 1 for a shoe 5, also called a binding, intended to be assembled to an interface 2, or mounting plate, secured to a sliding board or ski 3. According to one embodiment, the interface 2 and the sliding board 3 form a single, single-piece part. Alternatively, as illustrated below, the interface 2 is a separate component fixed to 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 device 4.

[0037] The invention relates more particularly to a sliding device intended for cross-country skiing or ski touring. Such a sliding device is equipped with a retaining device designed to secure the front of the boot to the sliding board. Thus, the retaining device does not secure the heel of the boot to the sliding board. The skier can then freely lift his heel, without lifting the ski. The sliding device may nevertheless comprise a guide edge arranged so as to limit the lateral movement of the heel when it cooperates with the guide edge, when the heel rests on the ski.

[0038] The interface 2 is fixed to 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 portion 212 and two lateral wings 213 which extend 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 an upper face 211. The assembly of the main body 21 on the ski 3 is carried out by any suitable means. This may 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 stop element 13 so as to be able to immobilize the retaining device along the sliding 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 notches 222 are subject to heavy stress because they are the ones that hold the retaining device in position, in the longitudinal direction. Therefore, it is preferable to choose a suitable material for these notches. The proposed construction 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 can be made of reinforced polymer or metal while the rest of the interface is made of 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 is transposable 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 made by one or more pins cooperating with holes. The series of notches 222 can be replaced by a series of housings, notches, hollows corresponding to the gap between two notches.The notches are not necessarily rectilinear in a transverse direction. Alternatively, the complementary indexing means 20 and the interface 2 form a single, single-piece part. For example, the notches 222 are directly made in the central part 212 of the main body 21 and not on an added insert 22.

[0039] The interface 2 is arranged between the sliding board 3 and the retaining device 1. It carries the complementary indexings 20.

[0040] 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 fastening element 51 belonging to the boot 5, a longitudinal stop element 13, an actuating means 14 of the longitudinal stop element and a return means 16 making it possible to bring the heel of the boot closer to the ski.

[0041] The chassis 11 is designed to be assembled to the interface 2. It extends along a longitudinal axis XI 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 lower face. Each edge 112 comprises an internal lateral groove 113 oriented in a longitudinal direction parallel to the longitudinal axis XI of the chassis. The two internal lateral 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 X.This cooperation also allows the maintenance of 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 sliding. longitudinal orientation of the retaining device relative to the ski. Other longitudinal guidance solutions could be considered.

[0042] 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, the shoe 5 may comply with 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 ensure the shoe is secured to the retaining device, the holding mechanism 12 comprises a fixed jaw 121, a movable jaw 122, an actuating lever 123 and connecting rods 124. The operation is similar to that of the binding described in document FR-A-2638974.

[0043] The fixed jaw 121 may be an added part, fixed to the chassis 11. It may be made of metal or with a material suitable for resisting friction and stresses between the fixed jaw and the attachment element 51 of the shoe. Alternatively, the fixed jaw 121 may be a portion of the chassis 11. In this case, the fixed jaw and the chassis form a single, single-piece part.

[0044] The movable jaw 122 is designed to move between an engagement position and a release position. When in its engagement 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 attachment element 51 as detailed below. This arrangement allows the attachment element to be secured to the retaining device while allowing the rotation of the shoe around an axis Y1 transverse to the retaining device. When in its release position, as shown in FIGS. 4 to 7, the movable jaw 122 is spaced from the fixed jaw 121 so as to create an upper passage for the attachment 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.

[0045] 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 hooking element 51 so that the latter can freely pivot about the axis Y1 of the formed cylinder. In this case, the axis Y5 of the hooking element 51 and the axis Y1 of the formed cylinder 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 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.

[0046] The actuating lever 123 is in the form of a cover pivotally mounted 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 part 117 of the chassis 11 forming a yoke by a connecting rod 124. A first end of the connecting rod is rotatably mounted on the front part of the chassis, 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.

[0047] To tilt the movable jaw from its engaged position to its released position, or vice versa, the user will act on the actuating lever 123. By lowering the actuating lever 123, it causes the movable jaw 122 to move towards its engaged position. Conversely, by lifting it, the actuating lever causes the movable jaw to move to tilt it from the engaged position to the released position. In this example, when it is completely lowered, the actuating lever 123 is designed to bear against a front upper face 116 of the chassis 11. In this configuration, the movable jaw is in its engaged position.

[0048] 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 released position. By lowering the actuating lever by a determined angle, the movable jaw is brought to its engaged position. Then, by continuing to rotate the actuating lever until it comes to bear against a front upper face 116 of the chassis 11, the movable jaw is locked in its engaged position and can no longer move longitudinally, in the direction X, without action on the actuating lever.

[0049] The actuating lever 123 forms a cover incorporating a lower recess 1231 provided to form, with the front upper face 116 of the chassis 11 and a part 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 chassis 11. Thus, in this configuration, the actuating lever 123 makes it possible to protect the elements housed in this cavity from external weather such as snow or ice. The connecting rods 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.

[0050] According to one embodiment, the return means 16 for bringing the heel of the boot closer to the ski is an elastic buffer carried by the body of the movable jaw 122. The elastic buffer 16 is designed to come to bear against a front face of the sole when the user lifts his heel. This type of return means is illustrated in document FR-A-2638974.

[0051] According to the invention, the retaining device comprises a longitudinal stop element 13 comprising an indexing means 131 and a first actuating surface 1322. The longitudinal stop element 13 is carried by the chassis 11. It is mounted to move 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 sliding board in order to immobilize the retaining device relative to the sliding board in one of several predetermined longitudinal positions. 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.

[0052] 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 actuating surface 1322 mentioned previously.

[0053] 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 easier to position and cooperate with the notches 1311, 222, in other words, 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 comprise only one notch 1311 or more notches 1311. The notches may take other shapes or other dimensions.

[0054] The longitudinal immobilization of the retaining device relative to the sliding board is achieved thanks to the cooperation 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, these are two notches 131. The complementary indexing means 20 comprises several housings for the index(es), 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 X to allow the longitudinal adjustment of the retaining device relative to the sliding board in one of several predetermined longitudinal positions. Thus, each housing defines a predetermined longitudinal position.

[0055] In addition, to facilitate the adjustment of the longitudinal position of the retaining device, the chassis may comprise one or more markers intended to cooperate respectively with one or more graduations provided on the upper surface of the interface. Thus, the user has a visual marker making it possible to determine the exact longitudinal position of the chassis relative to the interface. Other embodiments of this visual indicator may be envisaged.

[0056] 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 extending from the first actuating surface 1322, along a median sagittal plane XZ. Thus, the central rib divides the first actuating surface 1322 into two lateral parts arranged on either side of the central rib. The central rib comprises an oblong opening 1332 passing through, in the direction of its thickness. The oblong opening 1332 thus opens respectively onto each lateral face 1331 of the central rib. The oblong opening 1332 is oriented along 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 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 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. 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 substantially forms a capital “i” (like the section of an IPN or IPE beam).

[0057] 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 element 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 sized and arranged so that, when the longitudinal stop element 13 tilts into its inactive position, the indexing means 131 retracts into the chassis, it rises so as 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 a retractable indexing means 131, the retaining device is compatible with an optimized interface, having a small thickness. This makes it possible to lighten the sliding device, to have a more flexible interface which adapts better to the camber of the ski. The performance of the sliding machine is improved.Unlike the cited prior art, this construction no longer requires a groove in the front part of the interface, for the passage of the stop element, because, here, the stop element no longer risks interfering with a part of the interface when the frame 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 frame during its assembly or disassembly with the interface. This groove is also a source of entry of water or snow at the level of the stop element, which can block its kinematics, in particular if the water freezes or the snow packs down. Furthermore, this solution makes it possible to protect the indexing means 131 during the handling of the unmounted binding when the longitudinal stop element is in its inactive position.

[0058] In this example, the chassis comprises a through opening 114 in the height direction, in a Z direction, opening on one side onto the lower face 111 of the chassis and on the other side onto an upper face 116 of the chassis. The through opening 114 is intended to house the longitudinal stop element 13, and more particularly, 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 substantially to the dimensions of the peripheral edges of the plate 132 of the longitudinal stop element 13, apart from the operating clearance. The peripheral edges of the through opening 114 constitute a guide means. The peripheral edges of the plate 132 of the longitudinal stop element 13 constitute a complementary guide 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 prevent the longitudinal stop element 13 from tilting 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 capable of cooperating 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 guide means, as defined previously. Similarly, the vertical plane front surface 1333 of the longitudinal stop element 13 also constitute a complementary guide means, as defined previously.

[0059] 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 carried by the chassis 11. It comprises a first cam 141 capable of interacting with the first actuating 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 actuating means 14 is manipulated in one direction. The actuating means 13 is mounted to move relative to the chassis 11 between an engagement position for which the first cam 141 acts on the first actuating 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 actuating surface 1322 to maintain the longitudinal stop element 13 in its active position.

[0060] According to the invention, the actuating means 14 is mounted to be mobile 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 binding. The kinematics are simple and are similar to those of the actuating lever 123 of the holding mechanism 12 of the shoe, which makes it ergonomic.

[0061] 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.

[0062] 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 actuating means 14 towards its engagement position illustrated in FIGS. 4, 6, 8 and 9. Conversely, the user will press on the lower surface 1431 to tilt the actuating means 14 towards its disengagement position illustrated in FIGS. 5 and 7. Here, the gripping plate 143 is extended at one edge by two parallel extensions 144, spaced from each other, in a transverse direction Y. Thus, a central recess 1442 is created between the two radial extensions 144. The end of each extension radial 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 a transverse axis 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. 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 onto the median sagittal plane XZ of the actuating means 14 substantially coincides with 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 chassis 11, the median plane XZ143 of the gripping plate 143 and the median plane XZ11 of the chassis 11 substantially coincide.

[0063] The frame 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 so as to move the longitudinal stop element 13 relative to the frame 11 according to 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 so as to cause the translation of the longitudinal stop element 13 towards its active position. Furthermore, this arrangement is provided so that the second cam 142 of the actuating means 13 is capable of interacting 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.

[0064] 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 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. The lowering of the actuating means 14 consists of rotating the actuating means 14 around its axis of rotation Y14, in an engagement direction, to make it tilt from its disengaged position to its engaged position. Conversely, when the user lifts the actuating means 14, the second cam 142 comes into contact with the second actuating 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 actuating surface 1322 so as to no longer be in contact.

[0065] Thanks to this kinematics, the actuating means 14 acts directly, via the cams 141, 142, on the longitudinal stop element 13. This makes it possible to exert a balanced force, with good efficiency, on the actuating means 14 which makes it possible to actuate the longitudinal stop element 13, without excessive force, even if it is jammed by snow wedges, ice or the like. The operation of the longitudinal adjustment mechanism is more reliable, whether for locking or unlocking it.

[0066] Furthermore, the first cam 141 and the first actuating surface 1322 are dimensioned and arranged so 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 towards its inactive position causes the actuating means 14 to rotate in its direction of engagement. However, when it is in its engaged position, the actuating means 14 abuts against the front upper face 116 of the chassis 11. Consequently, the rotation of the actuating means 14 is blocked in this direction of rotation. The design therefore allows the longitudinal stop element 13 to be locked in its active position. The longitudinal stop element cannot therefore tilt towards its inactive position by a direct action on the longitudinal stop element. This configuration change can only be carried out via the actuation means 14.To achieve this feature, 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 engagement position, the direction N normal to the line of contact between the first cam and the first actuating surface is distant from the axis of rotation Y14 of the actuating means 14 so that a vertical force, from bottom to top, exerted on the longitudinal stop element 13 causes the actuating means 14 to rotate in its engagement direction. Here, the direction N is offset rearwardly relative to the axis of rotation Y14 of the actuating means 14.

[0067] In this example, the through opening 114 of the chassis 11 is positioned between the walls 1171 of the yoke 117.

[0068] 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 also constitutes a means of guide, as defined above. Similarly, the oblong opening 1332 also constitutes a complementary guide means, as defined above. 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 stop element 13, contributes to the compactness of the retaining device.

[0069] 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 connecting rods 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 connecting rods 124 is rotatably mounted on a lateral 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 axis 15 provides several functions, the pivot axis Y14 of the actuating 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.

[0070] In this example, the chassis 11, the actuating lever 123 of the holding 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 be housed inside a recess 1231 formed inside the actuating 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 actuating means 14 when the shoe is held in position relative to the chassis. In this configuration, the actuating means 14 is in its engaged position. This construction makes it possible to protect the longitudinal stop element 13 and the actuating means 14 from the weather when the user is skiing, which improves the reliability of the longitudinal adjustment mechanism.Indeed, the risk of blocking the mechanism by snow wedges, ice or other is limited. In addition, the actuating lever 123 also protects the mechanism against the risk of involuntary manipulation of the actuating means 14. Indeed, by being inaccessible when the shoe is connected to the holding mechanism, the actuating means cannot be manipulated. There is therefore no risk that the user or an external element, a ski, a shoe, a branch or other will involuntarily activate the actuating means.

[0071] Advantageously, the actuating lever 123 and the actuating means 14 are dimensioned and arranged so that the actuating lever 123 can cooperate with the actuating means 14 so that when the user lowers the actuating lever 123, this causes the actuating means 14 to tilt towards its engagement position and that when the actuating lever 123 is in contact against the upper face 116 of the chassis 11, the actuating means 14 is in its engagement position. This solution makes practice safer because the user is then sure to have 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.

[0072] 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 inner 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 inner surface 1232 of the recess 1231.

[0073] In this example, the longitudinal stop element 13 is actuated by an actuating means 14 independent of the holding mechanism 12. This construction makes it possible to make the longitudinal adjustment mechanism more reliable because it does not depend on the state of the holding mechanism. The user can remove the skiing device without risk of losing the longitudinal adjustment of his binding.

[0074] In this example, the central rib 133 of the stop 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 retaining device. Furthermore, the central rib 133 of the stop 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.

[0075] According to one embodiment, the retaining device is directly fixed to the sliding board, without a separate interface part. In this case, the upper face of the ski incorporates the elements allowing the assembly of the retaining device on the ski.

[0076] Other embodiments of the mechanism for holding a fastening element belonging to the shoe in position can be envisaged. For example, the movable jaw can be positioned backward on the retaining device relative to the fixed jaw. The holding mechanism may not have a fixed jaw. For example, the movable jaw can be made by two movable points. transversely, arranged symmetrically with respect to the longitudinal median plane of the ski, each point being capable of cooperating with a housing provided on a lateral edge of the front of the sole of the boot. Such a construction is illustrated, for example, in the document EP-A-0199098. Similarly, other solutions for the actuating member can be considered. This could be a rotary button or a push button.

[0077] According to 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 makes it possible to maintain the longitudinal stop element in its active position. There would no longer be a need for a second cam. Indeed, as soon as the first cam no longer cooperates with the first actuating surface, the elastic means would make it possible to 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 construction allows for easy disengagement of the indexing means with the complementary indexing means, this reduces the risk of jamming. In addition, this allows for a stable disengaged configuration of the longitudinal stop element when moving the retaining device at the time of adjustment.

[0078] According to 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. There would no longer be a need for a first cam. 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 would be possible to position the elastic means). Indeed, as soon as the second cam no longer cooperates with the second actuating surface, the elastic means would make it possible to 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 thus correspond to the position of the longitudinal stop element when it reaches the stop. This construction makes it easier to engage the indexing means with the complementary indexing means. In addition, this allows for a stable engaged configuration of the stop element. longitudinal when no longer in an adjustment configuration. This secures the adjustment, if the actuating means is no longer operational, it is more certain that the longitudinal position of the retaining device is locked. Alternatively, the device comprises such an elastic means and an actuating means provided with a first cam. In this case, the cam would allow the longitudinal stop element to be locked in its active position.

[0079] The invention is not limited to these embodiments. It is possible to combine these embodiments.

[0080] The invention is not limited to the embodiments previously described but extends to all the embodiments covered by the appended claims. Nomenclature

[0081] 1-Retaining device

[0082] 11-Chassis

[0083] 111- Lower face

[0084] 112-Ledge

[0085] 113- Internal lateral groove

[0086] 114- Through opening

[0087] 115- Vertical extension

[0088] 116-Upper face

[0089] 117-Screed

[0090] 1171-Wall

[0091] 12-Holding mechanism

[0092] 121- Fixed jaw

[0093] 122- Movable jaw

[0094] 1221- Oblong hole

[0095] 123-Actuating lever

[0096] 1231 - Hollowing

[0097] 1232- Internal surface

[0098] 124- Connecting rod

[0099] 13- Longitudinal stop element

[0100] 131- Means of indexing

[0101] 1311-Cran

[0102] 132- Plate

[0103] 1321- Lower surface

[0104] 1322- Upper surface / First actuation surface

[0105] 133- Central rib

[0106] 1331-Side face

[0107] 1332- Oblong opening

[0108] 1333- Anterior surface

[0109] 134- Upper extension

[0110] 1341- Lower surface / Second actuation surface

[0111] 135- Upper surface

[0112] 14- Means of actuation

[0113] 141- First cam

[0114] 142- Second cam

[0115] 143- Gripping plate

[0116] 1431- Lower surface

[0117] 1432-Upper surface

[0118] 144- Radial extension

[0119] 1441- Through hole

[0120] 1442- Central recess

[0121] 15 - Pivot shaft

[0122] 16- Means of recall

[0123] 2- Interface

[0124] 20- Additional indexing means

[0125] 21- Main body

[0126] 211-Upper face

[0127] 212- Central part

[0128] 2121- Housing

[0129] 213- Side wing

[0130] 22- Insert

[0131] 221 - Upper face

[0132] 222- Cran

[0133] 3- Sliding board

[0134] 31- Sliding surface

[0135] 32- Upper surface

[0136] 4- Sliding device

[0137] 5- Shoe

[0138] 51- Hanging element

[0139] 52- Sole

Claims

1. Claims Device (1) for retaining a shoe (5) on a sliding board (3), the retaining device comprising: - a frame (11) configured to cooperate with an interface (2) secured to the sliding board so as to be able to slide longitudinally relative to the sliding board - a longitudinal stop element (13) comprising an indexing means (131) and a first actuating surface (1322), the longitudinal stop 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 capable of cooperating with a complementary indexing means (20) integral with 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 actuating means (14) comprising a first cam (141) capable of interacting 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 carried by the chassis and mounted to move 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 surface of a actuation for maintaining the longitudinal stop element in its active position, characterized in that the actuation means is mounted to be movable only in rotation relative to the chassis.

2. A retaining device (1) according to claim 1, characterized in that the chassis carries a retaining 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 actuating means is a component separate from the components of the retaining mechanism.

3. A retaining device (1) according to the preceding claim, characterized in that the retaining mechanism comprises an actuating lever (123) dimensioned to cover the longitudinal stop element and the actuating means when the shoe is held in position relative to the chassis.

4. 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 (Y 14) of the actuating means, the radial extension carrying the first cam.

5. Retaining device (1) according to the preceding claim, characterized in that it comprises two parallel radial extensions (144), spaced from each other in a transverse direction.

6. 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 chassis are substantially merged, when the retaining device is assembled.

7. 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) capable of interacting 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.

8. Retaining device (1) according to the preceding claim combined with one of claims 3 to 5, characterized in that at least one radial extension carries the second cam.

9. 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 stop element tilts into its inactive position, the indexing means retracts into the chassis.

10. Sliding device (4) comprising a sliding board and a retaining device according to one of the preceding claims.

Images